Rotary motor assembly and electronic device

Abstract

The application provides a turntable motor assembly and electronic equipment, the turntable motor assembly comprises a limiting piece and two horizontally arranged turntable motors, each turntable motor comprises a stator and an eccentric rotor, the stator comprises a coil assembly, the eccentric rotor comprises a rotating shaft and an eccentric wheel, and the coil assembly is arranged at the top and / or bottom of the eccentric wheel; the eccentric wheel comprises a magnetic assembly rotatably arranged on the rotating shaft, and the limiting piece is used for abutting against the two eccentric wheels to limit the rotation angle of each eccentric wheel. The turntable motor assembly can generate a shock feeling through the improvement of the eccentric wheel structure, is beneficial to the increase of the motor rotating speed and the reduction of energy consumption, and can generate asymmetric vibration in the working process through the arrangement of the two horizontally arranged turntable motors.

Description

Technical Field

[0001] This invention relates to the field of turntable motor assembly technology, and more particularly to a turntable motor assembly and electronic device. Background Technology

[0002] Vibratory motors are widely used in various industries. They are devices that convert electrical energy into mechanical energy. Most existing vibratory motors are linear motors. When they reciprocate near the equilibrium position, the vibrations they produce are symmetrically distributed and cannot produce asymmetrical vibrations (anisotropic vibrations).

[0003] Therefore, it is necessary to provide a new turntable motor assembly and electronic equipment to solve or at least alleviate the above-mentioned technical defects. Summary of the Invention

[0004] The main objective of this invention is to provide a turntable motor assembly and electronic device, which aims to solve the technical problem that motors in the prior art cannot provide anisotropic vibration.

[0005] To achieve the above objectives, according to one aspect of the present invention, a turntable motor assembly is provided, comprising a limiting member and two horizontally arranged turntable motors, each turntable motor comprising a stator and an eccentric mover, the stator comprising a coil assembly, the eccentric mover comprising a rotating shaft and an eccentric wheel, the coil assembly being disposed at the top and / or bottom of the eccentric wheel; the eccentric wheel comprising a magnetic assembly rotatably mounted on the rotating shaft, the limiting member being used to abut against the two eccentric wheels to limit the rotation angle of each eccentric wheel.

[0006] In one embodiment, the eccentric wheel's rotation and reverse rotation angles are both within the range of 0° to 90°; the two turntable motors rotate in opposite directions, and both turntable motors collide with the limiting member simultaneously.

[0007] In one embodiment, the limiting member includes a first limiting surface and two second limiting surfaces, and each eccentric wheel includes a first abutting surface and a second abutting surface, wherein the first abutting surface is used to abut against the first limiting surface, and the second abutting surface is used to abut against the second limiting surface.

[0008] In one embodiment, the limiting member further includes two guide surfaces. The two second limiting surfaces are respectively connected to the first limiting surface through the two guide surfaces. With the perpendicular bisector of the line connecting the centers of the two rotating shafts as the line of symmetry, the two second limiting surfaces are mirror images of the line of symmetry, and the two guide surfaces are mirror images of the line of symmetry. Both second limiting surfaces are perpendicular to the first limiting surface.

[0009] In one embodiment, the eccentric wheel is a semi-circular wheel or a U-shaped wheel.

[0010] In one embodiment, the magnetic assembly includes a magnetic element and a mass element connected to the magnetic element, the mass element being rotatably connected to the rotating shaft.

[0011] In one embodiment, the mass component is a mass ring surrounding the magnetic component, and the mass ring is rotatably connected to the rotating shaft.

[0012] In one embodiment, the magnetic component includes a magnetic element that is rotatably connected to the rotating shaft.

[0013] In one embodiment, the surface of the limiting member is provided with a buffer.

[0014] According to another aspect of the present invention, the present invention also provides an electronic device comprising a housing and a turntable motor assembly as described above disposed within the housing.

[0015] In the above solution, the turntable motor assembly includes a limiting member and two horizontally arranged turntable motors. Each turntable motor includes a stator and an eccentric mover. The stator includes a coil assembly, and the eccentric mover includes a rotating shaft and an eccentric wheel. The coil assembly is located at the top and / or bottom of the eccentric wheel. The eccentric wheel includes a magnetic component rotatably mounted on the rotating shaft. The limiting member abuts against the two eccentric wheels to limit the rotation angle of each eccentric wheel. This invention, by setting two horizontally oriented turntable motors, each including an eccentric mover and an eccentric wheel, with the center of mass of the eccentric wheel not located at the center of the rotating shaft, results in an asymmetrical distribution of acceleration generated by the two eccentric wheels during rotation and when they stop upon encountering the limiting member. The effect is that the turntable motor assembly generates asymmetrical vibration during operation. Furthermore, because the eccentric mover is an eccentric structure, it inherently vibrates during rotation. Compared to existing technologies that require adding an eccentric block to the rotating shaft, this invention can generate vibration through improvements to the eccentric wheel structure, which is beneficial for increasing motor speed and reducing energy consumption. At the same time, by setting two horizontally placed turntable motors, asymmetrical vibration can be generated during operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the turntable motor assembly according to an embodiment of the present invention;

[0018] Figure 2This is a schematic diagram of the turntable motor assembly (hidden coil assembly) according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the turntable motor according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the limiting member according to an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the rotation of the turntable motor assembly according to an embodiment of the present invention;

[0022] Figure 6 for Figure 5 A schematic diagram of the resultant force acting on the turntable motor assembly under the specified conditions;

[0023] Figure 7 This is a schematic diagram of the braking of the turntable motor assembly according to an embodiment of the present invention;

[0024] Figure 8 for Figure 7 A schematic diagram of the resultant force acting on the turntable motor assembly under the specified conditions;

[0025] Figure 9 This is a schematic diagram of the turntable motor assembly rotating in reverse according to an embodiment of the present invention;

[0026] Figure 10 for Figure 9 A schematic diagram of the resultant force acting on the turntable motor assembly under the specified conditions;

[0027] Figure 11 This is a schematic diagram of the reverse braking of the turntable motor assembly according to an embodiment of the present invention;

[0028] Figure 12 for Figure 11 A schematic diagram of the resultant force acting on the turntable motor assembly under the specified conditions;

[0029] Figure 13 The waveforms of the input voltage signal and acceleration signal when the turntable motor assembly rotates according to an embodiment of the present invention are shown.

[0030] Label Explanation:

[0031] 100. Turntable motor assembly; 10. Turntable motor; 1. Eccentric mover; 11. Eccentric wheel; 111. Magnetic assembly; 1111. Magnetic component; 1112. Mass component; 12. Rotating shaft; 13. First contact surface; 14. Second contact surface; 2. Stator; 21. Coil; 3. Housing; 4. Limiting component; 41. First limiting surface; 42. Second limiting surface; 43. Guide surface.

[0032] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0036] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0037] Reference Figures 1-4 According to one aspect of the present invention, a turntable motor assembly 100 is provided, including a limiting member 4 and two horizontally arranged turntable motors 10. Each turntable motor 10 includes a stator 2 and an eccentric mover 1. The stator 2 includes a coil assembly, and the eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11. The coil assembly is disposed at the top and / or bottom of the eccentric wheel 11. The eccentric wheel 11 includes a magnetic assembly 111 rotatably mounted on the rotating shaft 12. The limiting member 4 is used to abut against the two eccentric wheels 11 to limit the rotation angle of each eccentric wheel 11.

[0038] The coil assembly of the turntable motor 10 is located at the top and / or bottom of the eccentric wheel 11. The coil assembly can be located at the top of the eccentric wheel 11, the bottom of the eccentric wheel 11, or both the top and bottom of the eccentric wheel 11. First, the magnetic component 111 of the eccentric wheel 11 is magnetized; specifically, the magnetization direction can be perpendicular to the plane of the paper. Then, the coil assembly is energized. According to Ampere's law, the coil 21 on the coil assembly will experience torque. Since the coil 21 is stationary, it will simultaneously exert a reaction torque force on the magnetic component 111, thereby driving the eccentric wheel 11 to rotate. The center of rotation of the eccentric wheel 11 is the axis of the rotating shaft 12. However, the mass distribution of the eccentric wheel 11 is not uniform; therefore, the center of mass of the eccentric wheel 11 and its center of rotation are not at the same point, which can generate vibration during rotation. This embodiment uses two horizontally positioned turntable motors 10. Each turntable motor 10 includes an eccentric mover 1 and an eccentric wheel 11. The center of mass of the eccentric wheel 11 is not located at the center of the rotating shaft 12. The acceleration generated by the two eccentric wheels 11 during rotation and when they stop upon encountering the limiting member 4 is asymmetrically distributed. This results in asymmetrical vibration of the turntable motor assembly 100 during operation. Furthermore, because the eccentric mover 1 has an eccentric structure, it inherently generates vibration during rotation. Compared to the prior art which requires adding an extra eccentric block to the rotating shaft 12, this embodiment generates vibration simply by improving the structure of the eccentric wheel 11. This is beneficial for increasing motor speed and reducing energy consumption. Additionally, by using two horizontally placed turntable motors 10, asymmetrical vibration can be generated during operation.

[0039] Furthermore, it should be noted that the rotary motor 10 used in this application, compared to other motors, does not have an iron core in its structure, and therefore does not have cogging torque. Specifically, cogging torque causes vibration and noise in the motor. If the cogging torque is too large, the motor may even stop rotating at a position where the cogging torque is too high. The presence of cogging torque also causes speed fluctuations in the motor, preventing smooth operation and affecting its performance. In variable speed drives, when the torque pulsation frequency coincides with the mechanical resonance frequency of the stator or rotor, the vibration and noise generated by the cogging torque will be amplified. The presence of cogging torque also affects the low-speed performance of the motor in the speed control system and the high-precision positioning in the position control system. Therefore, this embodiment uses a rotary motor 10 to make the rotary motor assembly 100 run more smoothly and with less noise.

[0040] In one embodiment, the eccentric wheel 11 rotates within a range of 0° to 90° in both directions. The two turntable motors 10 rotate in opposite directions, and both turntable motors 10 collide with the limiting member 4 simultaneously. Here, the maximum rotation angle of the eccentric wheel 11 is 90°. After rotating 90° and colliding with the limiting member 4, it can rotate 90° in the opposite direction to collide with the limiting member 4 again. The two turntable motors 10 have identical structures, equal rotational speeds and torques, but opposite rotational directions. Opposite rotational directions mean that one turntable motor 10 rotates clockwise while the other rotates counterclockwise; both turntable motors 10 will not rotate clockwise or counterclockwise simultaneously. (Refer to...) Figure 8 and Figure 12 Furthermore, the collisions between the two turntable motors 10 and the corresponding limiting members 4 occur at the same time, and the collision force is generated simultaneously. During the collision, the centrifugal force disappears, leaving only the component in the y direction.

[0041] Reference Figure 4 , Figure 7 and Figure 11 In one embodiment, the limiting member 4 includes a first limiting surface 41 and two second limiting surfaces 42. Each eccentric wheel 11 includes a first abutting surface 13 and a second abutting surface 14. The first abutting surface 13 abuts against the first limiting surface 41, and the second abutting surface 14 abuts against the second limiting surface 42. This refers to the case where there is only one limiting member 4. There is one first limiting surface 41, and two second limiting surfaces 42 and two guide surfaces 43. The first limiting surface 41 can simultaneously abut against both first abutting surfaces 13, limiting the rotation angle of the eccentric wheel 11. The two second limiting surfaces 42 abut against the second abutting surfaces 14 of the two eccentric wheels 11 respectively, limiting the rotation angle of the eccentric wheel 11. That is, the first limiting surface 41 and the second limiting surface 42 can respectively limit the rotation angle of the eccentric wheel 11 in the rotation and in the opposite direction. The center of the rotating shaft 12 is also the rotation center of the eccentric wheel 11. Connecting the centers of the two rotating shafts 12 forms a line segment, which is the line connecting the centers of the rotating shafts 12. (Refer to...) Figure 1 The perpendicular bisector of this line segment is the line of symmetry. Figure 1 The dashed line H represents the line of symmetry. The two second limiting surfaces 42 are set in mirror image with respect to the line of symmetry, and the two guide surfaces 43 are also set in mirror image with respect to the line of symmetry. This design adopts the same structure, which can ensure that the two eccentric wheels 11 collide with the limiting component 4 at the same time. It can also ensure that when the two eccentric wheels 11 are rotating and collide with the limiting component 4 at the same time, the centrifugal force disappears during the collision, leaving only the component in the y direction.

[0042] Reference Figures 1-4In one embodiment, the limiting member 4 further includes two guide surfaces 43, and two second limiting surfaces 42 are respectively connected to the first limiting surface 41 through the two guide surfaces 43; both second limiting surfaces 42 are perpendicular to the first limiting surface 41. Taking the perpendicular bisector of the line connecting the centers of the two rotating shafts 12 as the line of symmetry, the two second limiting surfaces 42 are mirror images of the line of symmetry, and the two guide surfaces 43 are mirror images of the line of symmetry. The eccentric wheel 11 can be a semi-circular wheel with a central angle of 180°. The second limiting surfaces 42 are perpendicular to the first limiting surface 41 at 90°, thus limiting the rotational and reverse rotation angles of the eccentric wheel 11 to 0°–90°, enabling asymmetric vibration.

[0043] In one embodiment, there are two limiting members 4, each corresponding to one of the two eccentric wheels 11. Each limiting member 4 abuts against its corresponding eccentric wheel 11 to limit the rotation angle of the eccentric wheel 11. Alternatively, there can be two limiting members 4, each corresponding to one eccentric wheel 11 to limit the rotation angle of the corresponding eccentric wheel 11. The eccentric wheels 11 collide or abut against their respective limiting members 4. With this design, compared to involving only one limiting member 4, the movements of the two eccentric wheels 11 do not affect each other. When both eccentric wheels 11 collide with a limiting member 4 simultaneously, the vibration generated by one eccentric wheel 11 will not affect the other eccentric wheel 11.

[0044] In one embodiment, each limiting member 4 includes a first limiting surface 41, a second limiting surface 42, and a guide surface 43 connecting the first limiting surface 41 and the second limiting surface 42. Each eccentric wheel 11 includes a first abutting surface 13 and abutting surface 14. The first abutting surface 13 is used to abut against the first limiting surface 41, and the second abutting surface 14 is used to abut against the second limiting surface 42. The first limiting surface 41 and the second limiting surface 42 are arranged perpendicularly. With the perpendicular bisector of the line connecting the centers of the two rotating shafts 12 as the line of symmetry, the two limiting members 4 are arranged in a mirror image with respect to the line of symmetry. This refers to the case where there are two limiting members 4. Each limiting member 4 includes a first limiting surface 41, a second limiting surface 42, and a guide surface 43. The first limiting surface 41 and the second limiting surface 42 of one limiting member 4 can abut against the first contact surface 13 and the second contact surface 14 of one eccentric wheel 11, respectively, to limit the rotation angle of one eccentric wheel 11. The first limiting surface 41 and the second limiting surface 42 of the other limiting member 4 can abut against the first contact surface 13 and the second contact surface 14 of another eccentric wheel 11, respectively, to limit the rotation angle of the other eccentric wheel 11 and its reverse rotation. The center of the rotating shaft 12 is also the rotation center of the eccentric wheel 11. Connecting the centers of the two rotating shafts 12 forms a line segment, which is the line connecting the centers of the rotating shafts 12. The perpendicular bisector of this line segment is taken as the line of symmetry. The two limiting members 4 are set in a mirror image with respect to the line of symmetry. This design can ensure that the two eccentric wheels 11 collide with the limiting members 4 at the same time. It is also to ensure that when the two eccentric wheels 11 collide with the limiting members 4 at the same time, the centrifugal force disappears during the collision, leaving only the component in the y direction.

[0045] In one embodiment, the eccentric wheel 11 is a semi-circular wheel or a U-shaped wheel. The shape of the eccentric wheel 11 can be varied; it can be a semi-circular wheel or a U-shaped wheel, and those skilled in the art can set it according to actual needs. Those skilled in the art will understand that when the maximum rotation angle of the eccentric wheel 11 needs to be 90°, it needs to be specifically set according to the shape of the limiting member 4.

[0046] Reference Figure 3In one embodiment, the magnetic component 111 includes a magnetic element 1111 and a mass element 1112 connected to the magnetic element 1111. The mass element 1112 is rotatably connected to the rotating shaft 12. The magnetic element 1111 is subjected to an Ampere force, generating torque that causes the eccentric wheel 11 to rotate. The magnetic element 1111 can be a permanent magnet, and the mass element 1112 is generally made of a high-density material, such as lead or tungsten alloy. The density of the mass element 1112 is much greater than that of the permanent magnet, and its mass is often set to be larger than that of the permanent magnet to increase the vibration. The connection method between the magnetic element 1111 and the mass element 1112 can be varied, as long as it ensures that the center of mass of the eccentric wheel 11 does not coincide with the center of the rotating shaft 12. The mass component 1112 can be embedded within the magnetic component 1111, or the mass component 1112 and the magnetic component 1111 can be alternately arranged around the outer periphery of the rotating shaft 12, or the mass component 1112 can be arranged on the outer periphery of the magnetic component 1111. The number of mass components 1112 can also be multiple, and these mass components 1112 can be distributed at intervals. This embodiment increases the vibration of the turntable motor 10 by setting the mass component 1112.

[0047] Reference Figure 3 In one embodiment, the mass component 1112 is a mass ring surrounding the magnetic component 1111, and the mass ring is rotatably connected to the rotating shaft 12. Designing the mass component 1112 as a ring surrounding the magnetic component 1111 not only securely fixes the magnetic component 1111 and protects it from breakage due to impact, but also, because the mass component 1112 has a relatively large mass, its eccentric placement on the periphery has a more pronounced effect, resulting in a stronger vibration. Specifically, the magnetic component 1111 can be semi-circular, and the mass ring is a semi-circular ring surrounding the magnetic component 1111.

[0048] In one embodiment, the magnetic assembly 111 includes a magnetic element 1111, which is rotatably connected to the rotating shaft 12. Alternatively, the mass element 1112 can be omitted, and the magnetic element 1111 can be directly rotatably mounted on the rotating shaft 12. The magnetic element 1111 experiences an Ampere force, generating torque that causes the eccentric wheel 11 to rotate. In this case, the center of mass of the magnetic element 1111 does not coincide with the center of the rotating shaft 12, thus producing the same eccentric effect. In this case, the magnetic element 1111 can be a semi-circle.

[0049] In one embodiment, a buffer element, which is a rubber layer or a foam layer, is provided on the surface of the limiting member 4. The buffer element is disposed on the contact surface of the limiting member 4 for abutting against the eccentric wheel 11. The limiting member 4 can be made of metal material to improve strength and provide support, while the buffer element is used to reduce noise and buffer impact force to prevent damage. Specifically, the buffer element can be made of foam or rubber material.

[0050] In one embodiment, the turntable motor assembly 100 further includes a housing 3, within which the turntable motor 10 is disposed. The housing 3 has mounting holes for mounting the limiting member 4. The housing 3 may include an upper housing and a lower housing. The upper housing has an upper through hole for mounting the limiting member 4, and the lower housing has a lower through hole for mounting the limiting member 4. The upper and lower through holes are directly opposite each other, and the limiting member 4 can be mounted on the upper and lower through holes by snap-fit. The coil assembly may consist only of a coil 21 fixed to the housing 3, or it may include a coil frame and a coil 21 wound on the coil frame, with the coil frame mounted on the housing 3 to provide support for the winding of the coil 21.

[0051] To clearly describe the implementation of the present invention, the technical solution and beneficial effects of the present invention are now explained in conjunction with the accompanying drawings:

[0052] In one specific embodiment, the turntable motor assembly 100 includes two horizontally arranged turntable motors 10. Each turntable motor 10 includes a limiting member 4 and two horizontally arranged turntable motors 10. Each turntable motor 10 includes a stator 2 and an eccentric mover 1. The stator 2 includes a coil assembly, which includes a coil 21. The eccentric mover 1 includes a rotating shaft 12 and an eccentric wheel 11. The coil assembly is disposed at the top and / or bottom of the eccentric wheel 11. The eccentric wheel 11 includes a magnetic assembly 111 rotatably mounted on the rotating shaft 12. The magnetic assembly 111 includes a magnetic element 1111 and a mass element 1112 disposed around the magnetic element 1111. The mass element 1112 is a mass ring surrounding the magnetic element 1111. The limiting member 4 is used to abut against the two eccentric wheels 11 to limit the rotation angle of each eccentric wheel 11.

[0053] Reference Figures 5-12 Where F1 represents centrifugal force, F2 represents braking force, and F_net represents the resultant force on the turntable motor assembly 100. Figure 6 and Figure 10 The thick arrow in the middle indicates the torque force exerted by the eccentric mover 1 on the housing of the turntable motor assembly 100. It should be noted that the mass component 1112 generally has a large mass; therefore, its center of mass is assumed to be on the mass component 1112, and the point of force application is selected on the mass component 1112 when analyzing the force. Specifically:

[0054] Reference Figure 5 and Figure 6 , Figure 5 The left-hand turntable motor 10 rotates counterclockwise, and the right-hand turntable motor 10 rotates clockwise. Figure 6 This diagram illustrates the resultant force acting on the turntable motor assembly 100 during rotation. After rotation begins, the x-components of the torque and centrifugal force of the two eccentric movers 1 are equal in magnitude and opposite in direction, canceling each other out, leaving only the y-component of the centrifugal force.

[0055] Reference Figure 7 and Figure 8 , Figure 7 This indicates that after the eccentric wheel 1111 rotates 90°, it brakes and collides with the limiting component 45. Figure 8 This diagram illustrates the resultant force acting on the turntable motor assembly 100 when a collision occurs. Upon collision, the centrifugal force disappears, generating braking forces in the -y direction.

[0056] Reference Figure 9 and Figure 10 , Figure 9 This diagram illustrates the eccentric wheel 1111 rotating in the opposite direction after braking. The left turntable motor 10 rotates clockwise, while the right turntable motor 10 rotates counter-clockwise. Figure 10 This diagram illustrates the resultant force acting on the counter-rotating turntable motor assembly 100. At this point, the x-components of the torques and centrifugal forces of the two eccentric movers 1 cancel each other out, leaving the y-component.

[0057] Reference Figure 11 and Figure 12 , Figure 11 This indicates that after the eccentric wheel 1111 brakes, it rotates 90° in the opposite direction and returns to its initial position, during which it brakes and collides with the limiting member 45. Figure 12 This diagram illustrates the resultant force acting on the turntable motor assembly 100 when braking occurs during reverse rotation. At this point, the centrifugal force disappears upon collision, and the braking forces of the two turntable motors 10 cancel each other out.

[0058] Because it is an eccentric mover 1, the vibration generated during rotation and braking is asymmetric. See [reference needed] for details. Figure 13 , Figure 13 The A-curve represents the electrical signal input to the motor. Figure 13 The B-curve represents the acceleration signal collected by the accelerometer from the turntable motor assembly 100. The horizontal axis represents time, the left vertical axis represents the input voltage, and the right vertical axis represents the acceleration magnitude. It can be seen that the absolute values ​​of the electrical signals input to the motor are basically the same, but the acceleration values ​​of the turntable motor assembly 100 are different, and the waveform of the acceleration signal exhibits an asymmetrical distribution. Therefore, it can be said that the turntable motor assembly 100 produces asymmetrical vibration.

[0059] According to another aspect of the present invention, the present invention also provides an electronic device, the electronic device including a housing and a turntable motor assembly 100 as described above disposed within the housing. Since the electronic device includes all the technical solutions of all embodiments of the turntable motor assembly 100 described above, it possesses all the beneficial effects brought by all the above technical solutions, which will not be elaborated upon here. The above electronic device may be a mobile phone or a game controller, etc.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit the patent scope of this invention. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that, under the technical concept of this invention, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; or they can be directly / indirectly applied to other related technical fields. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A turntable motor assembly, characterized in that, The device includes a limiting member and two horizontally arranged turntable motors. Each turntable motor includes a stator and an eccentric mover. The stator includes a coil assembly, and the eccentric mover includes a rotating shaft and an eccentric wheel. The coil assembly is disposed at the top and / or bottom of the eccentric wheel. The eccentric wheel includes a magnetic assembly rotatably mounted on the rotating shaft. The limiting member is used to abut against the two eccentric wheels to limit the rotation angle of each eccentric wheel. The eccentric wheel rotates and rotates in the opposite direction within an angle range of 0° to 90°; the two turntable motors rotate in opposite directions, and both turntable motors collide with the limiting member simultaneously.

2. The turntable motor assembly according to claim 1, characterized in that, The limiting member includes a first limiting surface and two second limiting surfaces. Each eccentric wheel includes a first abutting surface and a second abutting surface. The first abutting surface is used to abut against the first limiting surface, and the second abutting surface is used to abut against the second limiting surface.

3. The turntable motor assembly according to claim 2, characterized in that, The limiting component also includes two guide surfaces, and the two second limiting surfaces are respectively connected to the first limiting surface through the two guide surfaces; with the perpendicular bisector of the line connecting the centers of the two rotating shafts as the line of symmetry, the two second limiting surfaces are mirror images of the line of symmetry, the two guide surfaces are mirror images of the line of symmetry, and both second limiting surfaces are perpendicular to the first limiting surface.

4. The turntable motor assembly according to any one of claims 1 to 3, characterized in that, The eccentric wheel is a semi-circular wheel or a U-shaped wheel.

5. The turntable motor assembly according to any one of claims 1 to 3, characterized in that, The magnetic assembly includes a magnetic component and a mass component connected to the magnetic component, the mass component being rotatably connected to the rotating shaft.

6. The turntable motor assembly according to claim 5, characterized in that, The mass component is a mass ring surrounding the magnetic component, and the mass ring is rotatably connected to the rotating shaft.

7. The turntable motor assembly according to any one of claims 1 to 3, characterized in that, The magnetic assembly includes a magnetic element, which is rotatably connected to the rotating shaft.

8. The turntable motor assembly according to any one of claims 1 to 3, characterized in that, The surface of the limiting member is provided with a buffer.

9. An electronic device, characterized in that, The electronic device includes a housing and a turntable motor assembly as described in any one of claims 1 to 8 disposed within the housing.

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