Vibration devices and electronic equipment

Abstract

This disclosure provides a vibrator and electronic equipment. The vibrator includes a first motor group and a second motor group, each of which includes two turntable motors, and the four turntable motors are arranged horizontally, with each turntable motor including a stator, an eccentric movable element, and a position limiting member, the stator including a coil assembly, the eccentric movable element including a rotating shaft and an eccentric wheel, the coil assembly being positioned at the top and / or bottom of the eccentric wheel, the eccentric wheel including a magnetic assembly rotatably mounted on the rotating shaft, and the position limiting member being used to limit the rotation angle of the eccentric wheel. In the vibrator, four horizontal turntable motors are provided, which are divided into two motor groups, each motor group including two turntable motors, the first motor group and the second motor group are controlled individually, and asymmetric rotation, i.e., anisotropic rotation, can be generated.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vibration devices, and particularly to vibration devices and electronic devices.

Background Art

[0002] Vibration motors are widely used in various fields. A vibration motor is a device that converts electrical energy into mechanical energy. Many conventional vibration motors employ a linear motor mover, and the rotation generated during reciprocating motion near the equilibrium position is symmetric rotation, and asymmetric rotation (anisotropic rotation) cannot occur.

[0003] Therefore, there is a need to provide a new vibration device and an electronic device to solve or at least reduce the above technical defects.

Summary of the Invention

[0004] The main object of the present disclosure is to provide a vibration device and an electronic device that aim to solve the technical problem that a motor in the prior art cannot provide anisotropic rotation.

[0005] To achieve the above object, according to one aspect of the present disclosure, the present disclosure provides a vibration device including a first motor group and a second motor group. The first motor group and the second motor group each include two turntable motors, and the four turntable motors are arranged horizontally. Each turntable motor includes a stator including a coil assembly, an eccentric mover including a rotating shaft and an eccentric wheel, the coil assembly being disposed at the top and / or bottom of the eccentric wheel, and the eccentric wheel including a magnetic assembly rotatably attached to the rotating shaft, and a position limiting member that abuts against the eccentric wheel to limit the rotation angle of the eccentric wheel.

[0006] In one embodiment, the eccentric wheel is a semi-circular wheel.

[0007] In one embodiment, the magnetic assembly includes a magnetic member and a mass member connected to the magnetic member, the mass member being rotatably connected to the rotation axis.

[0008] In one embodiment, the mass member is a mass ring arranged on the outer circumference of the magnetic member, and the mass ring is rotatably connected to the rotation shaft.

[0009] In one embodiment, the position limiting member is an arc portion, the center of curvature of the position limiting member, the center of curvature of the eccentric wheel, and the center of the rotation axis are concentric, and the difference between the central angle of the eccentric wheel and the central angle of the position limiting member is 90°.

[0010] In one embodiment, in the first motor group, the two position limiting members are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes, and in the second motor group, the two position limiting members are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes.

[0011] In one embodiment, the rotational and reverse rotational angles of the eccentric wheel are both 0° to 90°, the first motor group has the same rotational direction for the two turntable motors, and the two turntable motors simultaneously collide with their respective two position limiting members, and the second motor group has the same rotational direction for the two turntable motors, and the two turntable motors simultaneously collide with their respective two position limiting members.

[0012] In one embodiment, the two turntable motors of the first motor group are a first motor and a second motor, respectively, and the two turntable motors of the second motor group are a third motor and a fourth motor, the first motor and the third motor are arranged adjacent to each other, the second motor and the fourth motor are arranged adjacent to each other, and the position limiting members of the first motor group and the second motor group are arranged symmetrically with respect to the perpendicular bisector of the line connecting the center of the rotation axis of the first motor and the center of the rotation axis of the third motor as the line of symmetry.

[0013] In one embodiment, a cushioning member is provided on the surface of the position limiting member.

[0014] In another aspect of the present disclosure, the present disclosure further provides a housing and electronic equipment including the aforementioned vibrating device provided within the housing.

[0015] In the above solution, the vibration device includes a first motor group and a second motor group, each of which includes two turntable motors, with the four turntable motors arranged horizontally, each turntable motor including a stator, an eccentric movable element, and a position limiting member, the stator including a coil assembly, the eccentric movable element including a rotating shaft and an eccentric wheel, the coil assembly being positioned at the top and / or bottom of the eccentric wheel, the eccentric wheel including a magnetic assembly rotatably mounted on the rotating shaft, and the position limiting member being used to contact the eccentric wheel and limit the rotation angle of the eccentric wheel. The coil assembly of the turntable motor is provided at the top and / or bottom of the eccentric wheel. First, the magnetic assembly of the eccentric wheel is magnetized. Specifically, the magnetization direction may be perpendicular to the plane of the paper. Next, the coil assembly is energized. According to Ampère's law, the coil in the coil assembly receives torque, and since the coil is fixed, the coil also exerts a reaction force on the magnetic assembly, causing the eccentric wheel to rotate. The rotation center of the eccentric wheel is the axis of the rotation shaft, and because the mass distribution of the eccentric wheel is not uniform, the mass center and rotation center of the eccentric wheel are not the same point, resulting in vibration during rotation. In this invention, four horizontal turntable motors are provided, which are divided into two motor groups, each motor group containing two turntable motors. Since the turntable motors are equipped with eccentric movable elements that include eccentric wheels, the mass center of the eccentric movable element is not located at the center of the rotation shaft. The first motor group and the second motor group are controlled individually, allowing for asymmetrical rotation, i.e., anisotropic rotation. Thus, because the eccentric movable element has an eccentric structure, it generates vibration during rotation. Compared to conventional technology, which requires the addition of a separate eccentric block to the rotation shaft, this invention can generate vibration by improving the structure of the eccentric wheel, which is advantageous for increasing the rotational speed of the motor and reducing energy consumption.

[0016] To more clearly illustrate embodiments of this disclosure or technical solutions in the prior art, the following drawings are briefly presented as necessary for describing embodiments or the prior art. Clearly, the drawings described below represent only a few embodiments of this disclosure, and those skilled in the art can obtain other drawings based on the structures shown in these drawings without any creative effort. [Brief explanation of the drawing]

[0017] [Figure 1] Figure 1 is a schematic diagram showing the structure of a vibration device according to an embodiment of the present disclosure. [Figure 2] Figure 2 is a schematic diagram showing the structure of a turntable motor according to an embodiment of the present disclosure. [Figure 3] Figure 3 is a schematic diagram showing the initial structure of a vibration device according to an embodiment of the present disclosure (the coil assembly is hidden). [Figure 4] Figure 4 is a schematic diagram showing the rotation of the first motor group of the vibration device according to the embodiment of this disclosure until braking occurs. [Figure 5] Figure 5 is a schematic diagram of the resultant force acting on the vibrating device in the state shown in Figure 4. [Figure 6] Figure 6 is a schematic diagram showing the first motor group of the vibration device according to the embodiment of this disclosure rotating in reverse until braking occurs. [Figure 7] Figure 7 is a schematic diagram of the resultant force acting on the vibrating device in the state shown in Figure 6. [Figure 8] Figure 8 is a schematic diagram showing the second motor group of the vibration device according to the embodiment of this disclosure rotating until it brakes. [Figure 9] Figure 9 is a schematic diagram of the resultant force acting on the vibrating device in the state shown in Figure 8. [Figure 10] Figure 10 is a schematic diagram showing the second motor group of the vibration device according to the embodiment of this disclosure rotating in reverse until braking occurs. [Figure 11] Figure 11 is a schematic diagram of the resultant force acting on the vibrating device in the state shown in Figure 10. [Figure 12] Figure 12 is a schematic diagram showing the structure of a position limiting member according to an embodiment of the present disclosure.

Embodiments for Carrying out the Invention

[0018] The realization of the object, functional features, and advantages of the present disclosure will be further described in conjunction with the embodiments while referring to the accompanying drawings.

[0019] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts are included within the protection scope of the present disclosure.

[0020] Note that all direction indications (e.g., up, down,...) in the embodiments of the present disclosure are only used to explain the relative positional relationship and movement status between components in a specific posture (as shown in the figure). When the specific posture changes, the direction indications change accordingly.

[0021] Also, the descriptions such as "first", "second", etc. in the present disclosure are for the purpose of explanation only, and should not be understood as indicating or implying their relative importance or implicitly indicating the number of technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features.

[0022] Furthermore, the technical solutions between the embodiments of the present disclosure can be combined with each other, but it is necessary to assume that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be realized, such a combination of technical solutions does not exist and should be regarded as outside the protection scope required by the present disclosure.

[0023] Referring to Figures 1 to 3, according to one aspect of the present disclosure, the present disclosure provides a vibrator 100. The vibrator 100 includes a first motor group 110 and a second motor group 120, each of which includes two turntable motors 10, with four turntable motors 10 arranged horizontally, each turntable motor 10 including a stator 2, an eccentric movable element 1 and a position limiting member 4, the stator 2 including a coil assembly, the eccentric movable element 1 including a rotating shaft 12 and an eccentric wheel 11, the coil assembly including a magnetic assembly 111 positioned at the top and / or bottom of the eccentric wheel 11 and the eccentric wheel 11 rotatably mounted on the rotating shaft 12, and the position limiting member 4 is used to contact the eccentric wheel 11 and limit the rotation angle of the eccentric wheel 11.

[0024] The coil assembly of the turntable motor 10 is positioned at the top and / or bottom of the eccentric wheel 11. The coil assembly may be positioned at the top of the eccentric wheel 11, at the bottom of the eccentric wheel 11, or at both the top and bottom of the eccentric wheel 11. First, the magnetic assembly 111 of the eccentric wheel 11 is magnetized. Specifically, the magnetization direction may be perpendicular to the plane of the paper. Next, current is supplied to the coil assembly. According to Ampère's law, the energized coil 21 in the coil assembly receives torque, and since the coil 21 is fixed, the coil 21 also exerts a reaction force on the magnetic assembly 111, causing the eccentric wheel 11 to rotate. The rotation center of the eccentric wheel 11 is the axis of the rotation shaft 12, and since the mass distribution of the eccentric wheel 11 is not uniform, the mass center and the rotation center of the eccentric wheel 11 are not the same point, which generates a vibration sensation during rotation. In this embodiment, four horizontal turntable motors 10 are provided, which are divided into two motor groups. Each motor group contains two turntable motors 10, and each turntable motor 10 is equipped with an eccentric movable element 1 including an eccentric wheel 11. Therefore, the center of mass of the eccentric movable element 1 is not located at the center of the rotation axis 12. The first motor group 110 and the second motor group 120 are controlled individually, and asymmetrical rotation, i.e., anisotropic rotation, can be generated. Thus, because the eccentric movable element 1 has an eccentric structure, it generates vibration during rotation. Compared with conventional technology, which requires the addition of an eccentric block to the rotation axis 12, this embodiment can generate vibration by improving the structure of the eccentric wheel 11, which is advantageous for increasing the rotational speed of the motor and reducing energy consumption.

[0025] Furthermore, the turntable motor 10 used in this invention does not have an iron core in its structure compared to other motors, and therefore does not generate cogging torque. Specifically, cogging torque causes motor vibration and noise. Also, if the cogging torque is too large, the motor may stop rotating at a position where the cogging torque is too large. When cogging torque is present, the motor speed fluctuates, the motor does not operate smoothly, and the motor performance is affected. In a variable speed drive, if the torque ripple frequency matches the mechanical resonance frequency of the stator or rotor, the vibration and noise generated by cogging torque are amplified. The presence of cogging torque also affects the low-speed performance of the motor in a speed control system and the high-precision positioning in a position control system. Therefore, in this embodiment, by employing the turntable motor 10, the operation of the vibration device 100 becomes smoother and noise is reduced.

[0026] Referring to Figure 2, in one embodiment, the eccentric wheel 11 is a semicircular wheel. The shape of the eccentric wheel 11 can vary; it may be semicircular or U-shaped. Those skilled in the art can set it according to their actual needs. Those skilled in the art will understand that if the maximum rotation angle of the eccentric wheel 11 needs to be 90°, it needs to be set specifically according to the shape of the position limiting member 4.

[0027] Referring to Figure 2, in one embodiment, the magnetic assembly 111 includes a magnetic member 1111 and a mass member 1112 connected to the magnetic member 1111, the mass member 1112 being rotatably connected to the rotation axis 12. The magnetic member 1111 receives an ampere force and generates torque that rotates the eccentric wheel 11. The magnetic member 1111 may be a permanent magnet, and the mass member 1112 is generally made from a relatively high-density material such as lead or tungsten alloy. The density of the mass member 1112 is much greater than that of the permanent magnet. When setting the size, it is necessary to set the mass of the mass member 1112 to be greater than the mass of the permanent magnet. Installing the mass member 1112 can enhance the vibration sensation. The method of connecting the magnetic member 1111 and the mass member 1112 can take various forms. It is sufficient to ensure that the center of mass of the eccentric wheel 11 does not coincide with the center of rotation axis 12. For example, the mass member 1112 may be fitted onto the magnetic member 1111, or the mass member 1112 and magnetic member 1111 may be arranged alternately around the outer circumference of the rotating shaft 12, or the mass member 1112 may be arranged around the outer circumference of the magnetic member 1111. There may also be multiple mass members 1112, and the multiple mass members 1112 may be arranged with intervals between them. In this embodiment, by providing the mass member 1112, the vibration sensation of the turntable motor 10 can be increased.

[0028] Referring to Figure 2, in one embodiment, the mass member 1112 is a mass ring positioned on the outer circumference of the magnetic member 1111, and the mass ring is rotatably connected to the rotation shaft 12. The mass member 1112 is designed to be positioned in a ring shape on the outer circumference of the magnetic member 1111, which not only firmly fixes the magnetic member 1111 and protects it from damage due to collision, but also, because the mass of the mass member 1112 is large, positioning it on the outer circumference makes the eccentric effect more pronounced, resulting in a stronger sense of vibration. Specifically, the magnetic member 1111 may be semicircular, and the mass ring is a semicircular ring positioned on the outer circumference of the magnetic member 1111.

[0029] In one embodiment, the magnetic assembly 111 includes a magnetic member 1111 that is rotatably connected to the rotating shaft 12. Of course, a mass member 1112 is not required, and the magnetic member 1111 may be directly and rotatably mounted to the rotating shaft 12. The magnetic member 1111 receives an ampere force and generates a torque that rotates the eccentric wheel 11. At this time, since the center of mass of the magnetic member 1111 does not coincide with the center of the rotating shaft 12, an eccentric effect is obtained. In this case, the magnetic member 1111 may be semicircular.

[0030] In one embodiment, the rotational and counter-rotational angular ranges of the eccentric wheel 11 are both 0° to 90°, the position limiting member 4 is an arc portion 43, the center of curvature of the position limiting member 4, the center of curvature of the eccentric wheel 11, and the center of the rotation axis 12 are concentrically arranged, and the difference between the central angle of the eccentric wheel 11 and the central angle of the position limiting member 4 is 90°. The design difference is 90°, that is, the central angle of the eccentric wheel 11 - the central angle of the position limiting member 4 = 90°, and the maximum rotational angle of the eccentric wheel 11 limited by the position limiting member 4 is 90°. Specifically, the position limiting member 4 is actually a 1 / 4 arc portion 43, and the corresponding central angle is 90°. The eccentric wheel 11 may also be a semicircular wheel, and the corresponding central angle is 180°. Since the position limiting member 4 and the eccentric wheel 11 are concentrically positioned, the difference in their central angles is 90°, which limits the rotational and counter-rotational angle ranges of the eccentric wheel 11 to 0° to 90°.

[0031] Referring to Figure 12, in one embodiment, the position limiting member 4 includes a first position limiting surface 41 and a second position limiting surface 42, and the eccentric wheel 11 includes a first contact surface and a second contact surface. The first position limiting surface 41 contacts the first contact surface, and the second position limiting surface 42 contacts the second contact surface. The first position limiting surface 41 and the second position limiting surface 42 are arranged perpendicularly. There are four eccentric wheels 11 and four position limiting members 4, and each position limiting member 4 is provided corresponding to one eccentric wheel 11, and each position limiting member 4 is used to limit the rotation angle of the corresponding eccentric wheel 11. Each position limiting member 4 includes one first position limiting surface 41, one second position limiting surface 42, and one guide surface. The first position limiting surface 41 and the second position limiting surface 42 of the position limiting member 4 contact the first contact surface and the second contact surface of the corresponding eccentric wheel 11, respectively, thereby limiting the rotation angle of the eccentric wheel 11.

[0032] In one embodiment, the centers of the four rotation axes 12 are located at the four vertices of a square. The four turntable motors 10 are each located at the four vertices of the square, that is, the turntable motors 10 are distributed in a 2x2 arrangement. This symmetrical design allows for the effective cancellation of unwanted force components when the turntable motors 10 of the first motor group 110 and the second motor group 120 rotate.

[0033] In one embodiment, the rotational and reverse rotational angles of the eccentric wheel are both 0° to 90°, in the first motor group 110 the two turntable motors 10 rotate in the same direction and the two turntable motors 10 collide simultaneously with their respective two corresponding position limiting members 4, and in the second motor group 120 the two turntable motors 10 rotate in the same direction and the two turntable motors 10 collide simultaneously with their respective two corresponding position limiting members 4. The rotational angle range of the eccentric wheel 11 is 0° to 90°, and it collides with the position limiting member 4 every 90° rotation, and then rotates in the reverse direction. In one specific embodiment, in the first motor group 110 the two position limiting members 4 are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes 12, and in the second motor group 120 the two position limiting members 4 are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes 12 of the two turntable motors 10 of the second motor group 120. Having the same direction of rotation means that the two turntable motors 10 rotate simultaneously clockwise or counterclockwise. As shown in Figures 3 to 11, by driving different groups of motors to perform operations in different directions of rotation, the vibration device 100 has at least the following four operating states. Here, F1 represents the braking force generated by the first motor 101, F2 represents the braking force generated by the second motor 102, F3 represents the braking force generated by the third motor 103, and F4 represents the braking force generated by the fourth motor 104.

[0034] In state 1, that is, the counterclockwise rotation state, the first motor group 110 transitions from the state shown in Figure 3 to the state shown in Figure 4. The state shown in Figure 3 is considered the initial state of the vibration device 100. Referring to Figure 3, the two motors on the left side of Figure 3 are the first motor group 110, and the two motors on the right side are the second motor group 120. The first motor group 110 and the second motor group 120 can be controlled individually. Assuming the position in Figure 3 is the initial position, the two turntable motors 10 of the first motor group 110 are controlled to rotate simultaneously counterclockwise. Referring to Figure 5, during the rotation process, the y-direction components generated by the turntable motors 10 cancel each other out, leaving only the x-direction component, thus providing a counterclockwise rotational sensation and moving to the position in Figure 4. When the turntable motor 10 collides with the position limiting member 4, the centrifugal force is eliminated, leaving only the braking forces F1 and F2, and the counterclockwise rotation sensation continues.

[0035] In state 2, that is, the state without rotation, the first motor group 110 transitions from the state shown in Figure 4 to the state shown in Figure 6. When the two turntable motors 10 of the first motor group 110 collide with the position limiting member 4, the two turntable motors 10 of the first motor group 110 are driven to rotate in opposite directions, i.e., clockwise. At this time, referring to Figure 7, during the rotation process, the x-direction components generated by the two turntable motors 10 cancel each other out, and the y-direction components cancel each other out, so there is no sense of rotation or translation, and it moves to the position in Figure 6. When the turntable motors 10 collide with the position limiting member 4, the centrifugal force disappears, and the braking forces F1 and F2 are equal in magnitude and opposite in direction, so they cancel each other out, and there is no sense of rotation or translation.

[0036] In state 3, that is, the clockwise rotation state, the second motor group 120 transitions from the state shown in Figure 6 to the state shown in Figure 8. The two motors on the left side of Figure 6 are the first motor group 110, and the two motors on the right side are the second motor group 120. The first motor group 110 and the second motor group 120 can be controlled individually. Assuming the position of the second motor group 120 on the right side of Figure 6 is the initial position, the two turntable motors 10 of the second motor group 120 are controlled to rotate simultaneously clockwise. Referring to Figure 9, during the rotation process, the y-direction components generated by the two turntable motors 10 cancel each other out, leaving only the x-direction component, resulting in a clockwise rotation sensation, and the turntable moves to the position shown in Figure 8. When the turntable motors 10 collide with the position limiting member 4, the centrifugal force disappears, and only the braking forces F3 and F4 remain, and the clockwise rotation sensation continues.

[0037] In state 4, that is, the state without rotation, the first motor group 110 transitions from the state shown in Figure 8 to the state shown in Figure 10. When the two turntable motors 10 of the second motor group 120 collide with the position limiting member 4, the two turntable motors 10 of the second motor group 120 are driven to rotate in opposite directions, i.e., counterclockwise. Referring to Figure 11, at this time, during the rotation process, the x-direction component force generated by the two turntable motors 10 cancels out each other, and the y-direction component force also cancels out each other, so there is no sense of rotation or translation. When the turntable motors 10 collide with the position limiting member 4, the centrifugal force disappears, the braking forces F3 and F4 are equal in magnitude and opposite in direction, cancel each other out, and there is no sense of rotation or translation.

[0038] In other words, if only the two turntable motors 10 of the left-side first motor group 110 are driven counterclockwise, a counterclockwise rotation sensation is obtained. If the two turntable motors 10 of the left-side first motor group 110 are driven in opposite directions, there is no sensation of rotation or translation. If only the two turntable motors 10 of the right-side second motor group 120 are driven clockwise, a clockwise rotation sensation is obtained. If the two turntable motors 10 of the right-side second motor group 120 are driven in opposite directions, there is no sensation of rotation or translation. Since the turntable motors 10 are equipped with an eccentric movable element 1 including an eccentric wheel 11, the center of mass of the eccentric movable element 1 is not located at the center of the rotation axis 12. The first motor group 110 and the second motor group 120 are controlled respectively, and asymmetric rotation, i.e., anisotropic rotation, can be generated.

[0039] Referring to Figure 1, in one embodiment, the two turntable motors 10 of the first motor group 110 are the first motor 101 and the second motor 102, respectively, and the two turntable motors 10 of the second motor group 120 are the third motor 103 and the fourth motor 104, respectively. The first motor 101 and the third motor 103 are arranged adjacent to each other, and the second motor 102 and the fourth motor 104 are also arranged adjacent to each other. The position limiting members 4 of the first motor group 110 and the second motor group 120 are arranged symmetrically with respect to the perpendicular bisector of the line connecting the center of the rotation axis 12 of the first motor 101 and the center of the rotation axis 12 of the third motor 103 as the line of symmetry. With this design, asymmetric vibration can be generated by controlling the first motor 101 and the third motor 103 to be driven simultaneously in opposite directions, or by controlling the second motor 102 and the fourth motor 104 to be driven simultaneously in opposite directions.

[0040] In one embodiment, a cushioning member is provided on the surface of the position limiting member 4, and this cushioning member is a rubber layer or a foam layer. The cushioning member is provided on the contact surface of the position limiting member 4 for contacting the eccentric wheel 11. The position limiting member 4 is made of a metal material to improve strength and support capacity, and the cushioning member is used to reduce noise, cushion impact forces, and prevent damage. Specifically, the cushioning member may be made of foam or rubber material.

[0041] In one embodiment, the vibrator 100 further includes a shell 3, and the turntable motor 10 is provided inside the shell 3, and the shell 3 has mounting holes for attaching a position limiting member 4. The shell 3 may include an upper shell and a lower shell, the upper shell having an upper through hole for attaching the position limiting member 4, and the lower shell having a lower through hole for attaching the position limiting member 4. The upper and lower through holes are arranged opposite each other, and the position limiting member 4 may be attached to the upper and lower through holes by an engagement mechanism. The coil assembly may include only a coil 21 fixed to the shell 3, or it may include a coil frame and a coil 21 wound around the coil frame, the coil frame being attached to the shell 3 to support the winding of the coil 21.

[0042] In another aspect of this disclosure, the disclosure further provides a housing and an electronic device including the aforementioned vibrator 100 provided within the housing. The electronic device has all of the technical solutions of all of the above embodiments of the vibrator 100 and therefore has all of the beneficial effects brought about by all of the above technical solutions, which will not be described one by one here. The electronic device may be a mobile phone or a joystick, etc.

[0043] Finally, the above embodiments are used solely to illustrate the technical solutions of the present application and are not intended to limit the scope of the patent of this disclosure. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art will understand that, based on the technical idea of ​​the present disclosure, the technical solutions described in each embodiment are still modifiable, or some or all of the technical features can be replaced with equivalents, or applied directly or indirectly to other related technical fields, and that such modifications or substitutions do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of each embodiment of the present application, and that all of these should be included within the scope of the claims and specification of the present application. In particular, the various technical features described in each embodiment can be combined in any way, provided that there is no structural inconsistency. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions included in the claims. [Explanation of Symbols]

[0044] 100, Vibration device, 110, First motor group, 120, Second motor group, 10, Turntable motor, 101, First motor, 102, Second motor, 103, Third motor, 104, Fourth motor, 1, Eccentric movable element, 11, Eccentric wheel, 111, Magnetic assembly, 1111, Magnetic member, 1112, Mass block, 12, Rotating shaft, 2, Stator, 21, Coil, 3, Shell, 4, Position limiting member, 41, First position limiting surface, 42, Second position limiting surface, 43, Arc portion.

Claims

1. A vibration device comprising a first motor group and a second motor group, each of which comprises two turntable motors, and four of the turntable motors arranged horizontally, each of which is a turntable motor. Stator including coil assembly, An eccentric movable element comprising a rotating shaft and an eccentric wheel, wherein the coil assembly is positioned at the top and / or bottom of the eccentric wheel, and the eccentric wheel is rotatably mounted on the rotating shaft, and the eccentric movable element comprises a magnetic assembly, A vibration device characterized by including a position limiting member that contacts the eccentric wheel in order to limit the rotation angle of the eccentric wheel.

2. The vibration device according to claim 1, characterized in that the eccentric ring is a semicircular ring.

3. The vibration device according to claim 1, wherein the magnetic assembly includes a magnetic member and a mass member connected to the magnetic member, and the mass member is rotatably connected to the rotation shaft.

4. The vibration device according to claim 3, characterized in that the mass member is a mass ring arranged on the outer circumference of the magnetic member, and the mass ring is rotatably connected to the rotation shaft.

5. The vibration device according to claim 1, characterized in that the position limiting member is an arc portion, the center of curvature of the position limiting member, the center of curvature of the eccentric wheel, and the center of the rotation axis are concentrically arranged, and the difference between the central angle of the eccentric wheel and the central angle of the position limiting member is 90°.

6. The vibration device according to claim 1, characterized in that, in the first motor group, the two position limiting members are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes, and in the second motor group, the two position limiting members are center-symmetric with respect to the midpoint of the line connecting the centers of the two rotation axes.

7. The vibration device according to any one of claims 1 to 6, characterized in that the rotational and reverse rotational angle ranges of the eccentric wheel are both 0° to 90°, in the first motor group the rotational direction of the two turntable motors is the same and the two turntable motors collide simultaneously with the two corresponding position limiting members, and in the second motor group the rotational direction of the two turntable motors is the same and the two turntable motors collide simultaneously with the two corresponding position limiting members.

8. The vibration device according to any one of claims 1 to 6, characterized in that the two turntable motors of the first motor group are a first motor and a second motor, the two turntable motors of the second motor group are a third motor and a fourth motor, the first motor and the third motor are arranged adjacent to each other, the second motor and the fourth motor are arranged adjacent to each other, and the position limiting member of the first motor group and the position limiting member of the second motor group are arranged symmetrically with respect to the perpendicular bisector of the line connecting the center of the rotation axis of the first motor and the center of the rotation axis of the third motor as the line of symmetry.

9. The vibration device according to any one of claims 1 to 6, characterized in that a cushioning member is provided on the surface of the position limiting member.

10. An electronic device comprising a housing and a vibration device according to any one of claims 1 to 9 provided within the housing.

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