Driving motor, camera module and electronic equipment

Abstract

The utility model discloses a driving motor, a camera module and electronic equipment. The driving motor comprises a shell, a carrier, a guide body, a rolling ball assembly and a driving assembly. The shell comprises an outer cover, a base and first guide parts, the outer cover and the base are connected to form an accommodating space, and the first guide parts are respectively arranged at at least one diagonal position of the outer cover or the base; the carrier is arranged in the accommodating space, at least one opposite angle of the carrier is respectively provided with a second guide part, and each second guide part and the corresponding first guide part form a group of guide structures; the at least one group of guide structures is configured to accommodate a guide body, and the guide body penetrates through the second guide part and / or the first guide part in a sliding manner; the at least one group of guide structures is configured to accommodate the rolling ball assembly, and the rolling ball assembly is arranged between the second guide part and the first guide part; the driving assembly drives the carrier to move along the guiding body and the rolling ball assembly. According to the driving motor, fine positioning is carried out through the guiding body, auxiliary positioning is carried out through the rolling ball assembly, and the inclination value of the carrier during moving is reduced.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to a driving motor, a camera module and an electronic device. Background Art

[0002] At present, the side of the carrier of the shrapnel motor and the full ball motor has a space margin to prevent the carrier from shaking left and right and causing scratches. However, when the shrapnel motor and the full ball motor are performing autofocus, the carrier and the lens group will tilt left and right when moving, and the tilt value is large, thus affecting the focusing effect. Utility Model Content

[0003] In view of the above, it is necessary to propose a driving motor, a camera module and an electronic device to reduce the tilt value when the carrier moves and improve the focusing effect.

[0004] The present application provides a driving motor, comprising:

[0005] The housing comprises an outer cover, a base and a first guide portion, wherein the outer cover is connected to the base to form an accommodating space, and the first guide portion is respectively disposed at at least one pair of corners of the outer cover or the base;

[0006] A carrier is arranged in the accommodating space, and second guide parts are respectively arranged at at least one pair of corners of the carrier, the second guide parts are arranged one by one with the first guide parts, and each second guide part and the corresponding first guide part form a group of guide structures;

[0007] A guide body, wherein at least one set of the guide structures is configured to accommodate the guide body, the guide body is slidably arranged in the second guide portion corresponding to the guide structure and the guide body is arranged parallel to the first guide portion;

[0008] A rolling ball assembly, wherein at least one group of the guide structures is configured to accommodate the rolling ball assembly, the rolling ball assembly is disposed between the second guide portion and the first guide portion in the corresponding guide structure, and the rolling ball assembly is disposed parallel to the guide body;

[0009] The driving assembly includes a driving module, wherein the driving module includes a first driving assembly and a second driving assembly, wherein the first driving assembly is arranged on the carrier, and the second driving assembly is arranged on the base or the outer cover and is arranged opposite to the first driving assembly, and the first driving assembly and the second driving assembly are used to generate a force to drive the carrier to move along the guide body and the roller assembly.

[0010] The above-mentioned driving motor drives the carrier to move along the guide body and the ball assembly through the force generated between the first driving component and the second driving component, and the moving direction of the carrier is precisely positioned by the guide body, and the moving direction of the carrier is auxiliary positioned by the ball assembly, thereby reducing the friction of the carrier when moving. When moving, the carrier is restricted by the guide body and will not tilt at a large angle, thereby reducing the tilt value of the carrier when moving.

[0011] In one embodiment, in the guide structure configured to accommodate the guide body, the second guide portion is configured to include an upper plate and a lower plate that are relatively arranged, the upper plate is provided with an upper through hole, the lower plate is provided with a lower through hole, the guide body is slidably passed through the upper through hole and the lower through hole, the diameter of the upper through hole is larger than the diameter of the lower through hole, or the diameter of the upper through hole is smaller than the diameter of the lower through hole.

[0012] The above-mentioned drive motor, by setting the second guide part including the above-mentioned upper plate and lower plate, only the upper plate and the lower plate on the second guide part are in contact with the guide body, and there is no other structure between the upper plate and the lower plate of the second guide part that is in contact with the guide body, thereby reducing the contact area between the second guide part and the guide body, thereby reducing the friction between the second guide part and the guide body, which is conducive to ensuring the smooth sliding of the carrier, and reducing the weight of the second guide part, thereby reducing the load of the drive component and ensuring the stable use of the drive motor. In addition, by limiting the diameter of the upper perforation to be larger or smaller than the diameter of the lower perforation, there is substantially no gap between the guide body and the upper plate or lower plate with a smaller diameter, thereby ensuring the accuracy of the carrier when moving along the guide body and reducing the tilt value of the carrier when moving; there is a gap between the guide body and the upper plate or lower plate with a larger diameter, so that the guide body can be smoothly inserted into the second guide part, thereby reducing the difficulty of assembly.

[0013] In one embodiment, the guide body is slidably provided in the second guide portion corresponding to the guide structure and is arranged parallel to the first guide portion, and the two ends of the guide body are respectively connected to the outer cover and the base, or the guide body is slidably provided in the second guide portion corresponding to the guide structure and is connected to the first guide portion.

[0014] The above-mentioned driving motor limits the specific setting method of the guide body, and the guide body is fixed on the shell. The structure of the guide body is stable, ensuring that the guide body is not easy to shake when the carrier moves along the guide body, improving the stability of the carrier during movement, thereby ensuring the accuracy of the carrier during movement.

[0015] In one embodiment, the shell further includes a stop portion, wherein in the guide structure configured to accommodate the roller ball assembly, the first guide portion is connected to the stop portion and encloses a stop space, and the roller ball assembly is at least partially located in the stop space.

[0016] The above-mentioned driving motor is provided with the above-mentioned stop part, which is connected to the corresponding first guide part and encloses a stop space. On the first hand, the stop part can prevent the ball assembly from being deflected and disengaged. On the second hand, the stop part can be used to contain lubricating oil to improve the smoothness of the movement of the ball assembly.

[0017] In one of the embodiments, the carrier is further provided with a first limit member and a second limit member on opposite sides along an extension direction parallel to the guide body, respectively. The first limit member is used to abut against the outer cover when the carrier moves toward the outer cover, and the second limit member is used to abut against the base when the carrier moves toward the base.

[0018] The above-mentioned driving motor is provided with the above-mentioned first limit member. When the carrier moves toward the outer cover, the first limit member contacts the outer cover to reduce the impact force between the carrier and the outer cover. By providing the above-mentioned second limit member, when the carrier moves toward the base, the second limit member contacts the base to reduce the impact force between the carrier and the base, thereby ensuring the stable use of the driving motor.

[0019] In one of the embodiments, the rolling ball assembly includes a plurality of rolling balls abutting against each other in sequence along the extension direction of the guide body, wherein the diameter of the rolling ball located in the middle is smaller than the diameter of the rolling balls located on both sides.

[0020] The above-mentioned driving motor, by setting the specific structure of the above-mentioned ball assembly, since the diameter of the ball in the middle is smaller than the diameter of the balls on both sides, on the first hand, the interior of the ball assembly can accommodate more lubricating oil, so that the rolling friction between the multiple balls is smoother, and on the second hand, since only the balls on both sides have rolling friction with the second guide part and the first guide part, the friction between the ball assembly as a whole and the second guide part and the first guide part is reduced, thereby reducing the friction when the carrier moves, ensuring the smooth movement of the carrier.

[0021] In one embodiment, the number of the driving modules is four, and the driving modules are arranged on the four sides of the carrier, wherein the first driving component includes a magnet unit, the second driving component includes a coil and a circuit board, the magnet unit is arranged on the carrier, the coil is connected to the circuit board and is arranged on the outer cover or the base, and the coil is located on the side of the circuit board facing the magnet unit and is arranged opposite to the magnet unit.

[0022] The driving motor, by setting the specific structure of the driving assembly, enables the driving assembly to achieve the effect of driving the carrier to move along the guide body and the ball assembly.

[0023] In one of the embodiments, the circuit boards of two adjacent driving modules are electrically connected via an electrical connector, and one of the circuit boards is also electrically connected to a pin, and the pin is used to electrically connect to external components.

[0024] The driving motor mentioned above realizes the electrical connection between the driving assembly and the external components by limiting the electrical connection between the circuit boards through the electrical connectors and the electrical connection with the external components through the pins.

[0025] An embodiment of the present application also provides a camera module, comprising a driving motor and a lens group as described in any of the above technical solutions, wherein the lens group is arranged in the carrier of the driving motor, and the driving motor is used to drive the lens group to move along the optical axis direction of the lens group.

[0026] In the above-mentioned camera module, the carrier of the driving motor moves along the guide body and the ball assembly when it moves. The guide body of the driving motor accurately positions the moving direction of the carrier, and the ball assembly of the driving motor assists in positioning the moving direction of the carrier, thereby reducing the friction of the carrier when it moves. When the carrier moves, it is restricted by the guide body and will not tilt at a large angle, thereby reducing the tilt value of the carrier when it moves, which is beneficial to improving the focusing effect of the camera module.

[0027] An embodiment of the present application also provides an electronic device, comprising the camera module as described in the above technical solution.

[0028] In the camera module of the above-mentioned electronic device, the carrier of the driving motor moves along the guide body and the roller assembly when moving, the guide body of the driving motor accurately positions the moving direction of the carrier, and the roller assembly of the driving motor assists in positioning the moving direction of the carrier, thereby reducing the friction of the carrier when moving. When moving, the carrier is restricted by the guide body and will not tilt at a large angle, thereby reducing the tilt value of the carrier when moving, which is beneficial to improving the focusing effect of the camera module, thereby improving the shooting effect of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the drive motor provided in an embodiment of the present application.

[0030] Figure 2 yes Figure 1 Exploded schematic diagram of the drive motor shown.

[0031] Figure 3 yes Figure 1 An exploded schematic diagram of another perspective of the drive motor shown.

[0032] Figure 4 yes Figure 1 An exploded schematic diagram of another perspective of the drive motor shown.

[0033] Figure 5 It is a schematic diagram of another exploded view of a driving motor provided in an embodiment of the present application.

[0034] Figure 6 It is a structural schematic diagram of the camera module provided in an embodiment of the present application.

[0035] Figure 7 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0036] Main component symbols

[0037] Electronic equipment 1

[0038] Camera module 1000

[0039] Drive motor 100, 300

[0040] Housing 10

[0041] Outer cover 11

[0042] The first light hole 111

[0043] Mounting holes 112

[0044] Contact part 113

[0045] Base 12

[0046] The second light hole 121

[0047] First guide portions 122, 122a, 122b, 122c, 122d

[0048] Insert 123

[0049] Stopper 124

[0050] Stop space 125

[0051] Embedding groove 126

[0052] Limit rod 127

[0053] Accommodation space 20

[0054] Carrier 30

[0055] The third light hole 31

[0056] Second guide parts 32, 32a, 32b, 32c, 32d

[0057] Upper board 321

[0058] Upper perforation 3211

[0059] Lower plate 322

[0060] Bottom perforation 3221

[0061] Groove 323

[0062] The first stopper 33

[0063] The second stopper 34

[0064] Guiding structure 40

[0065] Guide body 50, 55

[0066] Roller ball assembly 60

[0067] Rolling Ball 61

[0068] Drive assembly 70

[0069] Driver module 71

[0070] First drive assembly 70a

[0071] Magnet unit 711

[0072] Second drive assembly 70b

[0073] Coil 712

[0074] Circuit board 713

[0075] Electrical connector 714

[0076] Pin 715

[0077] Magnetic plate 716

[0078] Induction parts 80

[0079] Induction magnet 85

[0080] Electrical connector 90

[0081] Lens group 200

[0082] Optical axis 2 DETAILED DESCRIPTION

[0083] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0084] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, 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 therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0085] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between 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.

[0086] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0087] See also Figure 1 The embodiment of the present application provides a driving motor 100, and the driving motor 100 is applied to a camera module 1000 (see Figure 6 ), the driving motor 100 is used to drive the lens group 200 in the camera module 1000 (see Figure 6 ) moves along the optical axis 2 direction of the lens group 200 so that the camera module 1000 can achieve automatic focusing and improve the focusing effect of the camera module 1000.

[0088] Please refer to Figures 2 to 4 ,in Figures 2 to 4 The exploded schematic diagrams of the driving motor 100 are shown from various angles. The driving motor 100 includes a housing 10 , a carrier 30 , a guide body 50 , a ball assembly 60 and a driving assembly 70 .

[0089] The shell 10 includes an outer cover 11, a base 12 and a first guide portion 122. In the present embodiment, the outer cover 11 is roughly formed by connecting a planar plate and an annular plate connected to the planar plate. The outer cover 11 is connected to the base 12 to form an accommodating space 20, wherein a first light-through hole 111 communicating with the accommodating space 20 is opened on the outer cover 11, and a second light-through hole 121 communicating with the accommodating space 20 is opened on the base 12. The first light-through hole 111 and the second light-through hole 121 are coaxially arranged along the direction of the optical axis 2. At least one diagonal portion of the outer cover 11 or the base 12 is provided with a first guide portion 122, wherein the diagonal portion can be understood as two diagonally opposite corners of the outer cover 11 or the base 12. In this embodiment, two diagonal portions of the base 12 are provided with first guide portions 122, that is, the four corners of the base 12 are provided with first guide portions 122 located in the accommodating space 20 and extending toward the outer cover 11, wherein each first guide portion 122 is roughly three-section bent. It can be understood that in other embodiments, the first guide portion 122 can be provided only at one diagonal portion of the base 12, or the first guide portion 122 can be provided at one or two diagonal portions of the outer cover 11, and the embodiments of the present application will not be repeated here.

[0090] The carrier 30 is disposed in the accommodating space 20 and in the space enclosed by the four first guide portions 122 of the base 12. The carrier 30 is provided with a third light hole 31. The first light hole 111, the third light hole 31 and the second light hole 121 are coaxially arranged along the optical axis 2. The carrier 30 is provided with a second guide portion 32 at at least one diagonal portion. In this embodiment, the carrier 30 is provided with a second guide portion 32 at two diagonal portions, that is, the four corners of the carrier 30 are provided with a second guide portion 32. The four second guide portions 32 are arranged opposite to the four first guide portions 122 one by one. Each second guide portion 32 forms a group of guide structures 40 with the corresponding first guide portion 122. At least one group of guide structures 40 is configured to accommodate the guide body 50, and at least one group of guide structures 40 is configured to accommodate the ball assembly 60.

[0091] In the guide structure 40 configured to accommodate the guide body 50, the guide body 50 is slidably inserted into the corresponding second guide portion 32 and is arranged parallel to the first guide portion 122. The two ends of the guide body 50 are respectively connected to the outer cover 11 and the base 12. The extension direction of the guide body 50 is parallel to the direction of the optical axis 2.

[0092] In the guide structure 40 configured to accommodate the ball assembly 60, the ball assembly 60 is disposed between the corresponding second guide portion 32 and the corresponding first guide portion 122, and the two ends of the ball assembly 60 are respectively in contact with the outer cover 11 and the base 12, and the ball assembly 60 is disposed parallel to the guide body 50. It can be understood that the guide body 50 and the ball assembly 60 are respectively located in different guide structures 40.

[0093] The driving assembly 70 is disposed between the base 12 and the carrier 30, or between the outer cover 11 and the carrier 30, and is used to drive the carrier 30 to move along the guide body 50. Specifically, the driving assembly 70 includes a driving module 71, and the driving module 71 includes a first driving assembly 70a and a second driving assembly 70b. The first driving assembly 70a is disposed on the carrier 30, and the second driving assembly 70b is disposed on the base 12 or the outer cover 11 and is disposed opposite to the first driving assembly 70a. The first driving assembly 70a and the second driving assembly 70b are used to generate a force to drive the carrier 30 to move along the guide body 50 and the ball assembly 60. In this embodiment, the second driving assembly 70b is disposed on the base 12.

[0094] When the driving motor 100 is applied to the camera module 1000, the lens group 200 of the camera module 1000 is set in the third light hole 31 of the carrier 30, and the first driving component 70a and the second driving component 70b of the driving component 70 generate a force to drive the carrier 30 to move along the guide body 50 and the rolling ball assembly 60, so that the lens group 200 performs automatic focusing, and then the camera module 1000 achieves automatic focusing. In the driving motor 100, when the carrier 30 moves, it moves along the guide body 50 and the rolling ball assembly 60, and the moving direction of the carrier 30 is precisely positioned by the guide body 50, and the moving direction of the carrier 30 is auxiliary positioned by the rolling ball assembly 60, so as to reduce the friction when the carrier 30 moves. When the carrier 30 moves, it is restricted by the guide body 50 and will not tilt at a large angle, thereby reducing the tilt value of the carrier 30 when it moves, and improving the focusing effect of the camera module 1000.

[0095] In this embodiment, for ease of understanding and explanation, the four first guide portions 122 are defined as first guide portions 122a, 122b, 122c, and 122d, respectively, and the four second guide portions 32 are defined as second guide portions 32a, 32b, 32c, and 32d, respectively. Among the four groups of guide structures 40, one group of guide structures 40 is configured to accommodate the guide body 50, two groups of adjacent guide structures 40 are configured to accommodate the ball assembly 60, and the last group of guide structures 40 is configured to accommodate the sensor 80 (described in detail below). In this way, by limiting four groups of guide structures 40: one group of guide structures 40 is configured to accommodate the guide body 50, two groups of guide structures 40 are configured to accommodate the ball assembly 60, and one group of guide structures 40 is configured to accommodate the sensing component 80, the utilization rate of the four corners of the carrier 30 and the base 12 is improved, the weight of the carrier 30 is balanced, the center deviation is reduced, and the balance of the carrier 30 during movement is ensured; by setting a guide body 50 and two groups of ball assemblies 60, the guide body 50 and the two groups of ball assemblies 60 form a planar three-point support to ensure the stable movement of the carrier 30.

[0096] It can be understood that in other embodiments, among the four groups of guide structures 40, two groups of guide structures 40 can be configured to accommodate the guide body 50, one group of guide structures 40 can be configured to accommodate the ball assembly 60, and the last group of guide structures 40 can accommodate the sensing member 80. Alternatively, among the four groups of guide structures 40, two groups of guide structures 40 can be configured to accommodate the guide body 50, and two groups of guide structures 40 can be configured to accommodate the ball assembly 60. Alternatively, among the four groups of guide structures 40, three groups of guide structures 40 can be configured to accommodate the guide body 50, and one group of guide structures 40 can be configured to accommodate the ball assembly 60. Alternatively, among the four groups of guide structures 40, one group of guide structures 40 can be configured to accommodate the guide body 50, and three groups of guide structures 40 can be configured to accommodate the ball assembly 60.

[0097] In the present embodiment, in the guide structure 40 configured to accommodate the guide body 50, the second guide portion 32a is configured to include an upper plate 321 and a lower plate 322 arranged relatively to each other, the upper plate 321 is provided with an upper through hole 3211, and the lower plate 322 is provided with a lower through hole 3221, the upper through hole 3211 and the lower through hole 3221 are arranged vertically opposite to each other, the guide body 50 is slidably penetrated through the upper through hole 3211 and the lower through hole 3221, and the guide body 50 is roughly in the shape of a cylindrical rod. In the present embodiment, the diameter of the upper through hole 3211 is smaller than the diameter of the lower through hole 3221. Thus, by providing the upper plate 321 and the lower plate 322, only the upper plate 321 and the lower plate 322 on the second guide portion 32a are in contact with the guide body 50, and no other structure in contact with the guide body 50 exists between the upper plate 321 and the lower plate 322 of the second guide portion 32a, thereby reducing the contact area between the second guide portion 32a and the guide body 50, thereby reducing the friction between the second guide portion 32a and the guide body 50, which is beneficial to ensure the smooth sliding of the carrier 30, and reducing the weight of the second guide portion 32a, thereby reducing the weight of the carrier 30, reducing the load of the driving assembly 70, and ensuring the stable use of the driving motor 100. In addition, by limiting the diameter of the upper through hole 3211 to be smaller than the diameter of the lower through hole 3221, the upper plate 321 is used to ensure the accuracy of the second guide portion 32a when moving along the guide body 50, and reduce the tilt value of the carrier 30 when moving; the lower plate 322 is used to allow the guide body 50 to be smoothly inserted into the second guide portion 32a, thereby reducing the difficulty of assembly. The clearance between the guide body 50 and the lower through hole 3221 of the lower plate 322 is, for example, 0.02 mm.

[0098] It can be understood that in other embodiments, the diameter of the upper through hole 3211 can also be larger than the diameter of the lower through hole 3221, and the embodiments of the present application will not be described in detail here.

[0099] In this embodiment, the base 12 further has an inserting tube 123, wherein the first guiding portion 122a of the guiding structure 40 configured to accommodate the guide body 50 is disposed adjacent to the inserting tube 123, and the end of the guide body 50 is inserted into the inserting tube 123. Specifically, the outer cover 11 is provided with a mounting hole 112 disposed opposite to the inserting tube 123, and the mounting hole 112 is used to accommodate the other end of the guide body 50. Thus, by providing the above-mentioned inserting tube 123, the connection between the base 12 and the guide body 50 is realized, the connection between the guide body 50 and the base 12 is stable, and the structural stability of the driving motor 100 is improved; by providing the above-mentioned mounting hole 112, when assembling the driving motor 100, the guide body 50 can be inserted from the outer cover 11, so as to reduce the difficulty of assembling the driving motor 100.

[0100] In this embodiment, the base 12 further has a stopper 124, and the number of the stopper 124 is equal to that of the ball assembly 60, wherein in the guide structure 40 configured to accommodate the ball assembly 60, the first guide parts 122b and 122c thereof are connected with the corresponding stopper 124 and enclosed to form a stopper space 125, and the ball assembly 60 is at least partially located in the stopper space 125. Thus, by providing the above-mentioned stopper 124, the stopper 124 is connected with the corresponding first guide part 122b and 122c and enclosed to form the stopper space 125. On the one hand, the stopper 124 can prevent the ball assembly 60 from being deflected and disengaged, and on the other hand, the stopper 124 can be used to contain lubricating oil to improve the smoothness of the ball assembly 60 during movement.

[0101] Furthermore, the ball assembly 60 includes a plurality of balls 61 that are sequentially abutted along the extension direction of the guide body 50, wherein the diameter of the ball 61 located in the middle is smaller than the diameter of the balls 61 located on both sides. In this embodiment, in the guide structure 40 configured to accommodate the ball assembly 60, the second guide portions 32b and 32c are substantially 90° corner structures, and each group of ball assemblies 60 includes five balls 61, and the diameters of the three middle balls 61 are equal and smaller than the diameters of the balls 61 on both sides. Thus, by setting the specific structure of the ball assembly 60, since the diameter of the ball 61 in the middle is smaller than the diameter of the balls 61 on both sides, firstly, the inside of the ball assembly 60 can accommodate more lubricating oil, so that the rolling friction between the multiple balls 61 is smoother, and secondly, since only the balls 61 on both sides have rolling friction with the second guide parts 32b, 32c and the first guide parts 122b, 122c, the friction between the ball assembly 60 as a whole and the second guide parts 32b, 32c and the first guide parts 122b, 122c is reduced, thereby reducing the friction when the carrier 30 moves, ensuring the smooth movement of the carrier 30. It can be understood that when the lubricating oil is poured into the stopper space 125, the ball 61 on the lower side will lubricate the ball 61 on the upper side with the lubricating oil while rolling, and in this cycle, the multiple balls 61 can be lubricated by the lubricating oil, reducing the rolling friction between the multiple balls 61.

[0102] Furthermore, abutment portions 113 are provided on one side of the outer cover 11 facing the base 12. There are two abutment portions 113, which are provided one-to-one corresponding to the two groups of ball assemblies 60. The ends of the ball assemblies 60 abut against the abutment portions 113. The abutment portions 113 can be formed by stamping the outer cover 11. Thus, by providing the abutment portions 113, the ball assemblies 60 and the outer cover 11 are abutted against each other.

[0103] In this embodiment, the driving motor 100 further includes a sensing member 80, which is configured to accommodate the guiding structure 40 of the sensing member 80, and the sensing member 80 is arranged on the side of the corresponding first guiding portion 122d facing the corresponding second guiding portion 32d. Specifically, the driving motor 100 further includes an induction magnet 85, which is configured to accommodate the guiding structure 40 of the sensing member 80, and the second guiding portion 32d thereof is provided with a groove 323, and the induction magnet 85 is embedded in the groove 323 and arranged opposite to the sensing member 80. In this way, by setting the above-mentioned sensing member 80 and the induction magnet 85, the sensing member 80 can sense the induction magnet 85 on the corresponding second guiding portion 32d on the carrier 30, firstly, it is ensured that the driving motor 100 can be accurately assembled and the assembly failure is reduced, and secondly, the moving stroke, moving position, etc. of the carrier 30 are sensed, and the function of the driving motor 100 is increased. Exemplarily, the induction magnet 85 can be an object with uneven scales, and the sensing member 80 can be a micro distance sensor. It can be understood that the induction member 80 and the induction magnet 85 can also be other components that cooperate to achieve the induction function.

[0104] In this embodiment, four first stoppers 33 and four second stoppers 34 are respectively provided on opposite sides of the carrier 30 along the extension direction parallel to the guide body 50. The four first stoppers 33 are respectively connected to the four second guide portions 32, and the four second stoppers 34 are evenly distributed around the third light-through hole 31. Thus, by providing the above-mentioned first stoppers 33, when the carrier 30 moves toward the outer cover 11, the first stoppers 33 contact the outer cover 11 to reduce the impact force between the carrier 30 and the outer cover 11; by providing the above-mentioned second stoppers 34, when the carrier 30 moves toward the base 12, the second stoppers 34 contact the base 12 to reduce the impact force between the carrier 30 and the base 12, thereby ensuring the stable use of the drive motor 100.

[0105] It can be understood that in other embodiments, the number of first limit members 33 can be more or less, such as one, two, three, five, etc., and the number of second limit members 34 can be more or less, such as one, two, three, five, etc.

[0106] In this embodiment, the number of the driving modules 71 can be four, and the driving modules 71 are arranged on the four sides of the carrier 30. Specifically, the first driving component 70a includes a magnet unit 711, and the second driving component 70b includes a coil 712 and a circuit board 713. The magnet unit 711 includes two magnets with opposite magnetic poles. The magnet unit 711 is arranged on the corresponding side of the carrier 30. The coil 712 and the circuit board 713 are connected together and are both arranged on the base 12. Specifically, the circuit board 713 is arranged between two corresponding adjacent first guide portions 122 on the base 12. The coil 712 is arranged on the side of the circuit board 713 facing the corresponding magnet unit 711 and is arranged opposite to the corresponding magnet unit 711. The circuit board 713 is used to supply power to the coil 712 so that the coil 712 generates a magnetic field. Among them, the circuit boards 713 of two adjacent driving modules 71 are connected in series through an electrical connector 714, and one of the circuit boards 713 is also electrically connected to a pin 715, and the pin 715 is used to be electrically connected to external components. Thus, by setting the above-mentioned magnet unit 711, coil 712 and circuit board 713, the circuit board 713 provides positive voltage and negative voltage to the coil 712, so that the coil 712 generates positive magnetic field and negative magnetic field, and the force generated between the first driving component 70a and the second driving component 70b is magnetic force, which includes attractive force and repulsive force, thereby driving the magnet unit 711 to move upward and downward, so that the carrier 30 moves upward and downward along the guide body 50 and the ball assembly 60, and then the driving component 70 achieves the effect of driving the carrier 30 to move along the guide body 50. It can be understood that the induction member 80 is provided with an electrical connector 90 corresponding to the electrical connection, and the electrical connector 90 is connected to the four circuit boards 713 through the electrical connector 714 and is electrically connected to the external components through the pin 715. By setting four groups of driving modules 71, the movement of the carrier 30 can be balanced and the center deviation can be reduced.

[0107] It can be understood that in other embodiments, the driving modules 71 can also be arranged in pairs, for example, the number of the driving modules 71 is two, and they are respectively arranged on two opposite sides of the carrier 30 .

[0108] Furthermore, each driving module 71 also includes a magnetic conductive plate 716, which is arranged on the side of the circuit board 713 away from the magnet unit 711, and the two ends of the magnetic conductive plate 716 are respectively connected to its corresponding two adjacent first guide parts 122. Specifically, the two ends of the magnetic conductive plate 716 are respectively embedded in the corresponding first guide parts 122. In this way, by setting the above-mentioned magnetic conductive plate 716, on the first hand, the magnetic conductive plate 716 makes the magnetic field generated by the coil 712 more concentrated, thereby improving the strength and effectiveness of the magnetic field, which is beneficial to driving the magnet unit 711 to move, thereby improving the driving power of the driving component 70, and making the driving component 70 have a large stroke and a large thrust effect; on the second hand, the magnetic conductive plate 716 effectively separates the coil 712 to prevent the magnetic field generated by the coil 712 from affecting other components, thereby ensuring the normal use of the driving motor 100; on the third hand, the magnetic conductive plate 716 and the magnet unit 711 have an attractive magnetic force to ensure that the forces on all sides of the carrier 30 are balanced, and can also ensure that the contact between the carrier 30 and the ball assembly 60 is closer.

[0109] In this embodiment, the surface of the base 12 facing the outer cover 11 is further provided with an embedding groove 126, and the embedding groove 126 is used to embed the electrical connector 714 to limit the electrical connector 714. In this way, by providing the above-mentioned embedding groove 126, the electrical connector 714 and the circuit board 713 are limited to prevent the circuit board 713 from shifting, and at the same time, the electrical connector 714 is located on the inner side of the four first guide parts 122, so that the structure of the drive motor 100 is compact, and the electrical connector 714 is not easily damaged, thereby improving the stability of the drive motor 100.

[0110] See also Figure 5, the embodiment of the present application provides another driving motor 300. The driving motor 300 provided in this embodiment is roughly similar in structure to the driving motor 100 provided in the above embodiment, except that, in this embodiment, in the guide structure 40 configured to accommodate the guide body 55, the upper through hole 3211 of the upper plate 321 of the second guide portion 32a and the lower through hole 3221 of the lower plate 322 are both roughly open structures, and the guide body 55 is roughly rectangular rod-shaped, and the guide body 55 is connected to the side of the first guide portion 122a facing the second guide portion 32a, and the upper through hole 3211 of the upper plate 321 and the lower through hole 3221 of the lower plate 322 of the second guide portion 32a are sleeved on the rectangular rod-shaped guide body 55. In this way, by setting the upper through hole 3211 of the upper plate 321 and the lower through hole 3221 of the lower plate 322 as an open structure, the second guide portion 32a is slidably connected to the guide body 55. In addition, the guide body 55 is fixedly connected to the side of the corresponding first guide portion 122a facing the corresponding second guide portion 32a. The structure of the guide body 55 is stable, ensuring that the guide body 55 is not prone to shaking when the carrier 30 moves along the guide body 55, thereby improving the stability of the carrier 30 when moving, thereby ensuring the accuracy of the carrier 30 when moving.

[0111] Furthermore, in this embodiment, the surface of the base 12 facing the outer cover 11 is further provided with a limiting rod 127, the number of which is equal to and one-to-one corresponding to the number of the first guide portions 122, each limiting rod 127 is provided adjacent to the corresponding first guide portion 122, and the limiting rod 127 is used to be inserted into the electrical connector 714 to limit the electrical connector 714. In this way, by providing the above-mentioned limiting rod 127, the electrical connector 714 and the circuit board 713 are limited to prevent the circuit board 713 from shifting, and at the same time, the electrical connector 714 is located inside the four first guide portions 122, so that the structure of the drive motor 300 is compact, and the electrical connector 714 is not easily damaged, thereby improving the stability of the drive motor 300.

[0112] See also Figure 6 The embodiment of the present application provides a camera module 1000, and the camera module 1000 includes the driving motor 100, 300 and the lens group 200 described in any of the above embodiments. The present embodiment is described by taking the driving motor 100 as an example. Specifically, the lens group 200 is arranged in the third light hole 31 of the carrier 30, and the driving motor 100 is used to drive the lens group 200 to move along the optical axis 2 of the lens group 200. It should be noted that the lens group 200 may include one, two or more lenses, and the multiple lenses may be arranged at intervals or connected. The lens group 200 is bonded to the third light hole 31 of the carrier 30 by glue.

[0113] The above-mentioned camera module 1000 and lens group 200 move along the guide body 50 and the ball assembly 60 with the carrier 30. The moving direction of the carrier 30 is precisely positioned by the guide body 50 of the driving motor 100, and the moving direction of the carrier 30 is auxiliary positioned by the ball assembly 60 of the driving motor 100, so as to reduce the friction of the carrier 30 when it moves. When moving, the carrier 30 is restricted by the guide body 50 and will not tilt at a large angle, thereby reducing the tilt value of the carrier 30 when it moves, which is beneficial to improving the focusing effect of the camera module 1000.

[0114] See also Figure 7 , the embodiment of the present application provides an electronic device 1, and the electronic device 1 includes the camera module 1000 described in the above embodiment. In this embodiment, the electronic device 1 can be a mobile phone. It can be understood that in other embodiments, the electronic device 1 can also be a tablet computer, a laptop computer, a robot vacuum cleaner smart watch, a wearable device or other device with a camera, which is not specifically limited in the embodiment of the present application.

[0115] In the above-mentioned electronic device 1, in its camera module 1000, the lens group 200 moves along the guide body 50 and the ball assembly 60 with the carrier 30, the guide body 50 of the driving motor 100 precisely positions the moving direction of the carrier 30, and the ball assembly 60 of the driving motor 100 assists in positioning the moving direction of the carrier 30, thereby reducing the friction of the carrier 30 when it moves. When the carrier 30 moves, it is restricted by the guide body 50 and will not tilt at a large angle, thereby reducing the tilt value of the carrier 30 when it moves, which is beneficial to improving the focusing effect of the camera module 1000, thereby improving the shooting effect of the electronic device 1.

[0116] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A driving motor, characterized in that: include: The housing comprises an outer cover, a base and a first guide portion, wherein the outer cover is connected to the base to form an accommodating space, and the first guide portion is respectively disposed at at least one pair of corners of the outer cover or the base; A carrier is arranged in the accommodating space, and second guide parts are respectively arranged at at least one pair of corners of the carrier, the second guide parts are arranged one by one with the first guide parts, and each second guide part and the corresponding first guide part form a group of guide structures; A guide body, wherein at least one set of the guide structures is configured to accommodate the guide body, the guide body is slidably arranged in the second guide portion corresponding to the guide structure and the guide body is arranged parallel to the first guide portion; A rolling ball assembly, wherein at least one group of the guide structures is configured to accommodate the rolling ball assembly, the rolling ball assembly is disposed between the second guide portion and the first guide portion in the corresponding guide structure, and the rolling ball assembly is disposed parallel to the guide body; The driving assembly includes a driving module, wherein the driving module includes a first driving assembly and a second driving assembly, wherein the first driving assembly is arranged on the carrier, and the second driving assembly is arranged on the base or the outer cover and is arranged opposite to the first driving assembly, and the first driving assembly and the second driving assembly are used to generate a force to drive the carrier to move along the guide body and the roller assembly.

2. The drive motor according to claim 1, characterized in that: In the guide structure configured to accommodate the guide body, the second guide part is configured to include an upper plate and a lower plate arranged relatively to each other, the upper plate is provided with an upper through hole, the lower plate is provided with a lower through hole, the guide body is slidably passed through the upper through hole and the lower through hole, the diameter of the upper through hole is larger than the diameter of the lower through hole, or the diameter of the upper through hole is smaller than the diameter of the lower through hole.

3. The driving motor according to claim 1, characterized in that: The guide body is slidably provided in the second guide portion corresponding to the guide structure and is arranged parallel to the first guide portion, and the two ends of the guide body are respectively connected to the outer cover and the base, or the guide body is slidably provided in the second guide portion corresponding to the guide structure and is connected to the first guide portion.

4. The driving motor according to claim 1, characterized in that: The housing further comprises a stop portion, wherein in the guide structure configured to accommodate the rolling ball assembly, the first guide portion is connected to the stop portion and encloses a stop space, and the rolling ball assembly is at least partially located in the stop space.

5. The driving motor according to claim 1, characterized in that: The carrier is also provided with a first limit member and a second limit member on opposite sides along an extension direction parallel to the guide body, respectively. The first limit member is used to abut against the outer cover when the carrier moves toward the outer cover, and the second limit member is used to abut against the base when the carrier moves toward the base.

6. The driving motor according to claim 1, characterized in that: The rolling ball assembly includes a plurality of rolling balls abutting against each other in sequence along the extending direction of the guide body, wherein the diameter of the rolling ball located in the middle is smaller than the diameter of the rolling balls located at both sides.

7. The driving motor according to claim 1, characterized in that: There are four driving modules, and the driving modules are arranged on four sides of the carrier, wherein the first driving component includes a magnet unit, and the second driving component includes a coil and a circuit board, the magnet unit is arranged on the carrier, the coil is connected to the circuit board and is arranged on the outer cover or the base, and the coil is located on the side of the circuit board facing the magnet unit and is arranged opposite to the magnet unit.

8. The driving motor according to claim 7, characterized in that: The circuit boards of two adjacent driving modules are electrically connected via an electrical connector, and one of the circuit boards is also electrically connected to a pin, and the pin is used to be electrically connected to external components.

9. A camera module, characterized in that: It comprises the driving motor and lens group as described in any one of claims 1 to 8, wherein the lens group is arranged in the carrier of the driving motor, and the driving motor is used to drive the lens group to move along the optical axis direction of the lens group.

10. An electronic device, characterized in that: Comprising the camera module as claimed in claim 9.

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