Linear vibration electric motor and electronic device

Abstract

The embodiments of the present application relate to the technical field of vibration electric motors. Disclosed are a linear vibration electric motor (100) and an electronic device (200). In the linear vibration electric motor (100) of the present application, in a receiving space (11) defined by a housing (10), a supporting frame (21) of a vibrator (20) is provided with a driven member (22), and a driving member (30) is provided opposite the driven member (22) and configured to drive the driven member (22) to move the supporting frame (21) along a straight line. A plurality of accommodating grooves (211) are formed on the supporting frame (21), at least one supporting component (40) is provided in each accommodating groove (211), part of the supporting component (40) is located outside the accommodating groove (211), the supporting component (40) is pressed against the housing (10) by the supporting frame (21), and the supporting component (40) is configured to support the supporting frame (21). When the driving member (30) drives the supporting frame (21) to move relative to the housing (10), the supporting component (40) rolls relative to the housing (10) and the supporting frame (21), so that the supporting frame (21) can stably move, and the accommodating grooves (211) are located inside the receiving space (11) and will not be deformed due to impact. The electronic device (200) of the present application comprises the linear vibration electric motor (100) and a device body (210) provided with the linear vibration electric motor (100).

Description

Linear vibration motors and electronic equipment

[0001] This application refers to Japanese Patent Application No. 2024-032229, filed on March 4, 2023, entitled “LINEAR VIBRATION MOTOR AND ELECTRONIC APPLICATION,” which is incorporated herein by reference in its entirety. Technical Field

[0002] The embodiments of the present application relate to the technical field of vibration motors, and in particular to a linear vibration motor and an electronic device. Background Art

[0003] With the development of electronic technology, portable electronic devices such as smartphones and handheld game consoles are becoming increasingly popular. Most electronic devices use linear vibration motors as feedback devices, such as smartphones for incoming call notifications, message notifications, and navigation prompts, and game consoles for vibration feedback. Technical issues

[0004] Existing linear vibration motors typically use leaf springs as support components for the vibrator. Elastic leaf springs are excellent devices for fixing and supporting the vibrator. However, leaf springs have poor impact and vibration resistance. When subjected to a drop impact or reciprocating motion / vibration caused by repeated vibrations of the motor, the leaf springs are prone to deformation and damage. This causes linear vibration motors that use leaf springs as support components to perform poorly in drop tests and life tests, and are also prone to problems in actual applications. To address the problems with leaf springs, the thickness of the leaf springs is usually changed, or the material of the leaf springs is changed to produce leaf springs with better vibration and impact resistance. However, determining the appropriate leaf spring thickness and manufacturing material is very difficult, and when the leaf spring has sufficient elasticity to resist impact and vibration, its strength will be reduced, resulting in a reduction in the leaf spring's support effect and its controllability. In addition, when assembling a linear vibration motor, the leaf springs are prone to bending, damage, or even breaking.

[0005] Therefore, there is an urgent need in the art for a linear vibration motor that can solve the above technical problems. Technical Solutions

[0006] An embodiment of the present application provides a linear vibration motor, comprising a housing having a receiving space; a vibrator comprising a support frame and a follower fixed to the support frame, the support frame being arranged in the receiving space, the support frame being provided with a plurality of receiving grooves; a driving member being arranged opposite to the follower, the driving member being arranged in the receiving space, the driving member being used to drive the follower to drive the support frame to move along a straight line; a plurality of supporting components, at least one supporting component being provided in each of the receiving grooves, and the supporting component being partially located outside the receiving groove, the supporting component being pressed against the housing by the supporting frame; when the driving member drives the support frame to move relative to the housing, the supporting component rolls relative to the housing and the support frame.

[0007] An embodiment of the present application further provides an electronic device, comprising a device body and the above-mentioned linear vibration motor, wherein the linear vibration motor is disposed in the device body. Beneficial effects

[0008] The beneficial effects of the present application are as follows: within the receiving space enclosed by the housing, a follower is provided on the support frame of the vibrator, and a driver is disposed opposite the follower, configured to drive the follower to cause the support frame to move along a straight line. The support frame is provided with a plurality of receiving slots, each of which is provided with at least one supporting member, with a portion of the supporting member located outside the slot. The supporting member is pressed against the housing by the support frame, and the supporting member is configured to support the support frame. When the driver drives the support frame to move relative to the housing, the supporting member rolls relative to the housing and the support frame, enabling the support frame to move stably. The receiving slots are located within the receiving space and will not deform due to impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0010] FIG1 is a schematic diagram of the three-dimensional structure of a linear vibration motor according to an embodiment of the present application;

[0011] FIG2 is a front view of a linear vibration motor according to an embodiment of the present application;

[0012] FIG3 is a side view of a linear vibration motor according to an embodiment of the present application;

[0013] FIG4 is a schematic diagram of the assembly of internal components of a linear vibration motor according to an embodiment of the present application;

[0014] FIG5 is an exploded schematic diagram of the structure of a linear vibration motor according to an embodiment of the present application;

[0015] FIG6 is an enlarged schematic diagram of the S1 region in FIG5 ;

[0016] FIG7 is a schematic cross-sectional view of FIG2 along line AA';

[0017] FIG8 is a partial enlarged schematic diagram of FIG7;

[0018] FIG9 is a schematic cross-sectional view of FIG2 along line BB';

[0019] FIG10 is a cross-sectional schematic diagram of a linear vibration motor according to an embodiment of the present application, in which the second magnetic member is configured as a magnetic steel;

[0020] FIG11 is a schematic diagram of another configuration of a linear vibration motor according to an embodiment of the present application;

[0021] FIG12 is a schematic diagram of another configuration of a linear vibration motor according to an embodiment of the present application;

[0022] FIG13 is a schematic diagram of a configuration of a linear vibration motor according to an embodiment of the present application;

[0023] FIG14 is a schematic diagram of another configuration of a linear vibration motor according to an embodiment of the present application;

[0024] FIG15 is a schematic diagram of a three-dimensional structure of an electronic device according to an embodiment of the present application;

[0025] FIG16 is a schematic diagram of the three-dimensional structure of another electronic device according to an embodiment of the present application;

[0026] FIG17 is a schematic diagram of the three-dimensional structure of another electronic device according to an embodiment of the present application. Modes for Carrying Out the Invention

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in each embodiment of the present application to help readers better understand the present application. However, even without these technical details and various variations and modifications based on the following embodiments, the technical solutions claimed in the present application can still be implemented.

[0028] The purpose of the embodiments of the present application is to provide a linear vibration motor that can simplify and improve the reliability of the linear vibration motor and enable it to have good impact resistance and vibration resistance.

[0029] An embodiment of the present application provides a linear vibration motor. Within a housing enclosed by a casing, a vibrator support frame is provided with a follower. A driver is disposed opposite the follower and is configured to drive the follower to cause the support frame to move along a straight line. The support frame is provided with a plurality of receiving slots, each of which is provided with at least one supporting component, with a portion of the supporting component positioned outside the slot. The supporting component is held against the casing by the support frame and serves to support the support frame. When the driver drives the support frame to move relative to the casing, the supporting component rolls relative to the casing and the support frame, enabling stable movement of the support frame. The receiving slots are located within the housing space and are therefore protected from deformation due to impact.

[0030] Referring to Figures 1 to 9, a linear vibration motor 100 according to one embodiment of the present application includes a housing 10, a vibrator 20, a driver 30, and a plurality of support members 40. The housing 10 defines a receiving space 11. The vibrator 20 includes a support frame 21 and a driven member 22 secured to the support frame 21, with the support frame 21 positioned within the receiving space 11. The driver 30 is disposed opposite the driven member 22 and is also positioned within the receiving space 11. The driver 30 is configured to drive the driven member 22 to move the support frame along a straight line L. The support frame 21 defines a plurality of receiving slots 211, each of which contains at least one support member 40, with a portion of the support member 40 positioned outside the slot 211. The support member 40 is held against the housing 10 by the support frame 21. When the driver 30 drives the support frame 21 to move, the support member 40 rolls relative to the support frame 21.

[0031] With this arrangement, when the driver 30 drives the follower 22 to move, causing the support frame 21 to follow the follower 22, the support member 40 maintains support for the support frame 21 while also allowing the support frame 21 to reciprocate relative to itself along the aforementioned straight line L, enabling the linear vibration motor 100 to vibrate reciprocally. Furthermore, because the accommodating groove 211 is located within the receiving space 11 of the housing 10, it is not deformed by impacts such as a drop, thus preventing the normal movement of the support member 40 from being affected. This ensures that the linear vibration motor 100 exhibits excellent shock and vibration resistance.

[0032] In this embodiment, the housing 10 includes a front housing 12 and a base plate 13. The front housing 12 has a groove structure, and the base plate 13 is disposed within the groove structure to form a receiving space 11 together with the groove structure. For example, the front housing 12 has a square groove structure, and the base plate 13 has a square plate-like structure. The base plate 13 is disposed within the opening of the square groove, thereby forming the aforementioned receiving space 11. The front housing 12 and the base plate 13 can be fixed by welding or bonding to form an integrated structure, thereby achieving excellent waterproof and dustproof properties. Furthermore, the front housing 12 and the base plate 13 are preferably constructed of a strong material to prevent deformation of the housing 10 due to impacts such as drops.

[0033] Referring again to Figures 4, 5, and 7, in this embodiment, the linear vibration motor 100 further includes a second magnetic member 50 disposed on the front housing 12 or the substrate 13. The driving member 30 is a coil disposed on the front housing 12 or the substrate 13. The driven member 22 is a first magnetic member, and the second magnetic member 50 is disposed opposite the first magnetic member. The second magnetic member 50 is configured to cooperate with the first magnetic member to maintain the support frame 21 in its initial position when the coil is de-energized. When the coil is energized, the first magnetic member is driven to move the support frame 21 along the straight line L.

[0034] Furthermore, the second magnetic member 50 is further configured to cause the support frame 21 to move toward the housing 10 (which may be the front housing 12 or the base plate 13), thereby enabling the support frame 21 to press the support component 40 against the housing 10. Specifically, the second magnetic member 50 disposed on the housing 10 attracts the first magnetic member disposed on the support frame 21, causing the support frame 21 to move toward the front housing 12, thereby allowing the front housing 12 and the support frame 21 to jointly clamp and secure the ball bearing.

[0035] The following example illustrates that the second magnetic component 50 is disposed on the front shell 12 and the coil is disposed on the substrate 13. Specifically, the magnetic field of the second magnetic component 50 interacts with the magnetic field of the first magnetic component (e.g., a magnet). Since the second magnetic component 50 is fixed to the front shell 12 and cannot move, the first magnetic component will be subjected to the force and move. In this embodiment, the second magnetic component 50 is configured to attract the first magnetic component, and the second magnetic component is disposed at the center of the front shell 12. In this way, in the initial state (when the coil is not energized), the second magnetic component 50 can attract the first magnetic component and keep it in its initial position. When the coil is energized, the coil generates a magnetic field, and the magnetic field generated by the coil interacts with the magnetic field of the first magnetic component. Because the coil is fixed to the substrate 13 and does not move, when the force exerted by the magnetic field generated by the coil on the first magnetic member is greater than the force exerted by the magnetic field of the second magnetic member on the first magnetic member, the first magnetic member will be affected by the force and move, thereby deviating from the initial position, thereby driving the support frame 21 to move. By controlling the magnitude and direction of the current passing through the coil, the direction of the force exerted on the first magnetic member can be controlled, thereby causing the support frame 21 to move in the desired direction. When the support frame 21 continuously moves back and forth, the vibration of the linear vibration motor 100 is achieved. It should be noted that when the coil drives the support frame 21 to move, the force exerted by the second magnetic member 50 on the first magnetic member is always present. This force will cause the support frame 21 to have a tendency to return to its initial position when it moves away from its initial position, that is, the second magnetic member 50 can act as a magnetic spring. When the coil is de-energized, the magnetic field generated by the coil disappears immediately. Therefore, the first magnetic member is no longer affected by the magnetic field generated by the coil. At this time, the first magnetic member is moved to its initial position by the force of the magnetic field of the second magnetic member 50.

[0036] Optionally, the second magnetic part 50 can be a magnetic yoke, a magnetic steel, or a magnetic fluid encapsulated by a sealing component and fixed on the front shell 12 or the substrate 13, as long as the second magnetic part 50 can act as a magnetic spring when the coil is energized and drives the support frame 21 to move, or keep the first magnetic part in its initial position when the coil is de-energized.

[0037] Referring to FIG. 10 , it should be noted that when both the first magnetic member and the second magnetic member 50 are made of magnetic steel, it is necessary to arrange their different magnetic poles in opposite directions. For example, the north pole of the first magnetic member is opposite the south pole of the second magnetic member 50, and the south pole of the first magnetic member is opposite the north pole of the second magnetic member 50. In this way, the facing surfaces of the first and second magnetic members 50 can attract each other.

[0038] It is understood that by adjusting the dimensions (e.g., length, width, and height) of the second magnetic member 50, different forces acting on the first magnetic member by the second magnetic member 50 can be obtained. Thus, simply by adjusting the second magnetic member 50, a spring constant with minimal negative impact on the linear vibration motor 100 can be obtained within the receiving space 11. Alternatively, by combining multiple second magnetic members 50, different forces acting on the first magnetic member by the second magnetic member 50 can be obtained. Compared to the prior art using leaf springs, the spring constant can be changed simply by changing the combination of the second magnetic members 50.

[0039] It is understandable that the positions of the coil and the second magnetic member 50 can be interchanged, that is, the coil is arranged on the front housing 12, and the second magnetic member 50 is arranged on the substrate 13. Alternatively, as shown in FIG11 , the coil and the second magnetic member 50 can also be arranged on the same side, for example, the coil and the second magnetic member 50 are arranged on the front housing 12, or the coil and the second magnetic member 50 are arranged on the substrate 13. In this case, either the coil or the second magnetic member 50 can be directly arranged on the front housing 12 or the substrate 13, while the other can be arranged on the side of the former away from the front housing 12 or the substrate 13.

[0040] Referring to Figures 9 to 11 , in this embodiment, a receiving groove 211 is provided on the side of the support frame 21 facing the front housing 12. Specifically, the opening of the receiving groove 211 faces or substantially faces the front housing 12, and the receiving groove 211 extends along a straight line L. The inner walls of the receiving groove 211 and the inner walls of the front housing 12 clamp and secure the supporting member 40, which is a ball bearing. With this arrangement, during operation of the linear vibration motor 100, as the support frame 21 reciprocates, the ball bearings roll within the receiving groove 211, enabling the support frame 21 to move smoothly. In other words, as long as the ball bearings can roll normally, their specific position relative to the receiving groove 211 or the front housing 12 will not affect the normal operation of the linear vibration motor 100. Therefore, the linear vibration motor 100 provided in this application is not easily affected by assembly accuracy.

[0041] It can be understood that when the second magnetic member 50 is provided on the front shell 12, during a drop test or an unexpected drop impact, the attraction between the first magnetic member and the second magnetic member 50 can also slow down the possible collision between the support frame 21 and the substrate 13, thereby preventing the support frame 21 and / or the substrate 13 from being worn and generating dust due to friction when the support frame 21 and the substrate 13 collide.

[0042] In other feasible embodiments, the support member 40 is a roller. This description will be made using an example where the support member 40 is disposed on the side of the support frame 21 facing the front housing 12. The roller's axle is fixed to the support frame 21, and its axial direction is parallel to the base plate 13. The roller can rotate about the axle's axis. When the support frame 21 moves, the roller rolls on the front housing 12.

[0043] In this embodiment, there are at least three receiving grooves 211, and the position of at least one receiving groove 211 is not in the same straight line as the positions of the other receiving grooves 211. For example, there are exactly three receiving grooves 211, and the positions of the three receiving grooves 211 are in the same plane and form a triangle, so that the support frame 21 will not flip relative to the front housing 12.

[0044] In this embodiment, the support frame 21 is in a square ring shape, and has four receiving grooves 211, located at the four corners of the support frame 21, and a ball is disposed in each of at least three receiving grooves 211. In other feasible embodiments, the number of receiving grooves 211 may be more than four.

[0045] In this embodiment, the inner wall of the front shell 12 includes a front wall 121 opposite to the support frame 21, and a side wall 122 surrounding the front wall 121 and connected to the front wall 121. The inner wall of the accommodating groove 211 includes an inclined wall 2111 arranged at an angle to the front wall 121. The ball is located between the front wall 121, the side wall 122 and the inclined wall 2111. Referring to Figure 8, taking the ball located at the top in Figure 7 as an example, under the attraction of the first magnetic member and the second magnetic member 50, the inclined wall 2111 applies a force F1 inclined to the upper left to the ball, while the front wall 121 applies a horizontal force F2 to the right to the ball, and the side wall 122 applies a vertical downward force F3 to the ball. When the support frame 21 is in a stationary state, the effects of these forces are balanced and the position of the ball is maintained. Under the action of these forces, when the support frame 21 is driven to move, the balls can only roll along the straight line L. Since the support frame 21 is supported by the balls, the support frame 21 can only move in the direction of the straight line L. For the balls located at the bottom, the corresponding inclined wall 2111 of the receiving groove 211 exerts a force inclined downward to the left, while the corresponding side wall 122 exerts a vertical upward force.

[0046] Optionally, the angle between the inclined wall 2111 and the front wall 121 is 30° to 60°. In a specific embodiment, the angle between the inclined wall 2111 and the front wall 121 is 45°.

[0047] 6 again, in this embodiment, the receiving groove 211 further includes a bottom wall 2112 and an upper wall 2113, both connected to the inclined wall 2111. The bottom wall 2112 is perpendicular to the front wall 121, and the upper wall 2113 is parallel to the front wall 121. In some cases, both the bottom wall 2112 and the upper wall 2113 can limit the position of the ball, ensuring that the ball is in the correct position.

[0048] Referring again to Figures 4 to 6, in this embodiment, the support frame 21 is provided with an anti-collision portion 212 on a side facing away from the accommodating groove 211. In a direction perpendicular to the substrate 13, the width of the gap between the anti-collision portion 212 and the substrate 13 is less than the height of the support component 40. The anti-collision portion 212 is used to prevent the support frame 21 from colliding with the substrate 13. In a drop test or an unexpected falling impact, the anti-collision portion 212 will abut against the substrate 13 before the support frame 21 contacts the coil or the substrate 13, thereby avoiding damage to the support frame 21 or preventing the first magnetic member from detaching from the support frame 21 due to the impact.

[0049] The gap between the anti-collision portion 212 and the base plate 13 is smaller than the diameter of the ball. Even when the anti-collision portion 212 is in full contact with the base plate 13, the gap between the support frame 21 and the front housing 12 is also smaller than the diameter of the ball, thereby preventing the ball from escaping the accommodating groove 211. In this way, the impact of the drop is mitigated, or after the drop impact ends, the support frame 21 will inevitably return to its original position under the action of the first and second magnetic members 50, and the ball can be moved back to the inclined wall 2111.

[0050] It should be noted that when the first magnetic member is disposed on the support frame 21 and the coil and the anti-collision portion 212 are both located on the same side of the support frame 21, the height of the anti-collision portion 212 should be greater than the height of the coil in a direction perpendicular to the substrate 13. This ensures that the support frame 21 or the first magnetic member will not contact the coil when the anti-collision portion 212 contacts the substrate 13 due to a drop impact. If the coil and the anti-collision portion 212 are disposed on opposite sides of the support frame 21 (i.e., not on the same side), the support frame 21 can be provided with a relief groove 213 to avoid the coil. When the support frame 21 is securely holding the ball bearing, the distance between the bottom of the relief groove 213 and the housing 10 should be greater than the height of the coil.

[0051] In order to improve the impact resistance of the anti-collision portion 212 , the anti-collision portion 212 may be made of a material with a certain elasticity, such as rubber or other materials. The anti-collision portion 212 may also be integrally provided with the support frame 21 .

[0052] During the operation of the linear vibration motor 100 , the attraction between the first magnetic member and the second magnetic member 50 can also maintain a certain gap width between the anti-collision portion 212 and the substrate 13 , thereby enabling the linear vibration motor 100 to continuously and stably output.

[0053] Referring to Figures 12 and 13, in other embodiments, the receiving groove 211 is provided on the side of the support frame 21 facing the substrate 13 and extends along the straight line L. The inner wall of the receiving groove 211 and the substrate 13 clamp and fix the ball. At this time, since it is necessary to make the support frame 21 and the substrate 13 clamp and fix the ball together, the second magnetic member 50 can be provided on the substrate 13. In a specific embodiment, the second magnetic member 50 is provided at the exact center of the substrate 13. At this time, the ball is located between the substrate 13, the side wall 122 and the inclined wall 2111. At this time, the substrate 13 applies a horizontal force to the left to the ball, the side wall 122 applies a vertical downward force to the ball, and the inclined wall 2111 applies an inclined force to the right and upward to the ball. When the effects of these forces reach a balance, the position of the ball is maintained.

[0054] It is understandable that when the opening of the receiving groove 211 faces the substrate 13 , the anti-collision portion 212 is disposed on the side of the supporting frame 21 facing the front housing 12 .

[0055] Referring again to FIG. 5 , in this embodiment, the linear vibration motor 100 further includes a circuit board 60 , which is electrically connected to the coil for supplying power to the coil. When the coil is fixed to the front housing 12 , the circuit board 60 can also be fixed to the front housing 12 . When the coil is fixed to the substrate 13 , the circuit board 60 can also be fixed to the substrate 13 .

[0056] Furthermore, in order to be able to connect to the circuit board 60 from the outside of the housing 10, the connection terminals of the circuit board 60 can be exposed on the outside of the housing 10. In this way, it can be electrically connected to the controller of the electronic device using a probe with a spring, or using solder connection, or ACF (Anisotropic Conductive Film) bonding.

[0057] Referring to Figures 13 and 14 , a linear vibration motor 100 according to one embodiment of the present application is substantially similar to the linear vibration motor 100 of the aforementioned embodiment, with the primary difference being that a second magnetic member 50 is positioned on the support frame 21, the driving member 30 is a first magnetic member, and the driven member 22 is a coil. When the coil is de-energized, the second magnetic member 50 is attracted by the first magnetic member, maintaining the support frame 21 in its initial position. When the coil is energized, the magnetic field generated by the coil interacts with the first magnetic member. Since the first magnetic member is fixed in position, the coil drives the support frame 21 to move along a straight line L and away from its initial position.

[0058] In this case, the second magnetic member 50 can be located between the driven member 22 and the driving member 30, or on the side of the driven member 22 away from the driving member 30. Preferably, the second magnetic member is located on the side of the driven member 22 away from the driving member 30, so that a certain gap can be maintained between the vibrator 20 and the driving member 30 to avoid contact between the vibrator 20 and the driving member 30 during impact.

[0059] Since the first magnetic part is fixed on the outer shell 10, the height of the anti-collision part 212 should be greater than the height of the first magnetic part, or, when the support frame 21 tightly presses the ball, the distance between the bottom of the avoidance groove 213 on the support frame 21 and the outer shell 10 should be greater than the height of the first magnetic part.

[0060] In this case, since the coil will continuously move when the linear vibration motor 100 is working, the circuit board 60 is at least partially configured to be flexible so as to be deformed in accordance with the movement of the coil.

[0061] According to the above embodiments, it can be found that either the first magnetic member or the coil can be disposed on the support frame 21, while the other can be disposed on the housing 10. The specific arrangement is not limited. The same is true for the first magnetic member and the second magnetic member 50: one can be disposed on the support frame 21 and the other can be disposed on the housing 10. The magnetic member disposed on the housing 10 needs to be disposed opposite the opening of the receiving groove 211. This ensures that the housing 10 and the support frame 21 can clamp the ball.

[0062] During a drop test or unexpected drop impact, the conventional leaf spring structure, unable to absorb the impact, causes the vibrator 20 to vibrate violently relative to the housing 10. This vibration can significantly damage the components of the vibrator 20 itself and other components fixed to the housing 10. Furthermore, the leaf spring structure is also susceptible to damage due to stress concentration and other conditions. In this application, the conventional leaf spring structure is omitted. The magnetic spring design is achieved through the attraction between the first and second magnetic members 50. This avoids reduced reliability and spring breakage caused by metal fatigue. Furthermore, the spring constant of the magnetic spring can be varied by adjusting the length, width, and height of the second magnetic member 50, achieving a variety of variations, thereby reducing design difficulty and reducing the constraints on the design of the linear vibration motor 100. Furthermore, the attraction between the first and second magnetic members 50 prevents the vibrator 20 from always in contact with the housing 10. Even during drop tests and unexpected drop impacts, this attraction can reduce vibration of the vibrator 20. The sliding support provided by the balls on the support frame 21 can also reduce the negative impact of the impact, thereby improving the shock and vibration resistance of the linear vibration motor 100.

[0063] Furthermore, with a traditional leaf spring structure, the assembly accuracy of the linear vibration motor, the posture or state of the handheld electronic device, and the state during a drop impact can all cause the vibrator to contact (or collide) with the housing (or stator). In the present application, however, the vibrator 20 is supported by a ball bearing sliding mechanism and is continuously secured by the attractive force of the first and second magnetic members 50, maintaining a certain clearance between the vibrator 20 and the housing 10 (or stator). Furthermore, the support frame 21 is provided with an anti-collision portion 212 on the side facing away from the ball bearing. Even in the event of an accidental drop, the anti-collision portion 212 will first contact the housing 10, preventing contact between the vibrator 20 and the housing 10 (or stator).

[0064] 15 to 17 , an embodiment of the present application provides an electronic device 200 comprising a device body 210 and any of the aforementioned linear vibration motors 100, wherein the linear vibration motors 100 are disposed within the device body 210. Furthermore, the number and specific locations of the linear vibration motors 100 disposed within the device body 210 can be selected and set based on actual needs.

[0065] In this embodiment, the electronic device 200 can be a portable electronic device such as a mobile phone or a tablet computer, or it can be an electronic device used in a car navigation system, a car dashboard, etc. that uses a linear vibration motor as a feedback device, or it can be multiple electronic devices used for tactile feedback including wearable devices.

[0066] It should also be noted that those skilled in the art will appreciate that, in the various embodiments of this application, many technical details are provided to help readers better understand this application. However, even without these technical details and the various variations and modifications based on the above embodiments, the technical solutions claimed in this application can be implemented. The division of the above embodiments is for convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with each other and referenced to each other without contradiction.

Claims

1. A linear vibration motor (100), comprising: The housing (10) has a receiving space (11); A vibrator (20) comprises a support frame (21) and a driven member (22) fixed to the support frame (21), wherein the support frame (21) is arranged in the receiving space (11), and the support frame (21) is provided with a plurality of receiving grooves (211); A driving member (30) is arranged opposite to the driven member (22), the driving member (30) is arranged in the receiving space (11), and the driving member (30) is used to drive the driven member (22) to drive the support frame (21) to move along a straight line; A plurality of supporting components (40), at least one supporting component (40) is provided in each accommodating groove (211), and a portion of the supporting component (40) is located outside the accommodating groove (211), and the supporting component (40) is pressed against the housing (10) by the supporting frame (21); when the driving member (30) drives the supporting frame (21) to move relative to the housing (10), the supporting component (40) rolls relative to the housing (10) and the supporting frame (21).

2. The linear vibration motor (100) according to claim 1, wherein: It also includes a second magnetic member (50) provided on the housing (10), the driving member (30) is a coil, and the coil is provided on the housing (10); the driven member (22) is a first magnetic member, the second magnetic member (50) is arranged opposite to the first magnetic member, and the second magnetic member (50) is used to cooperate with the first magnetic member to keep the support frame (21) in the initial position when the coil is powered off, and to drive the first magnetic member to drive the support frame (21) to move along the straight line when the coil is powered on; Alternatively, the invention further comprises a second magnetic member (50) provided on the support frame (21), the driving member (30) is a first magnetic member, and the first magnetic member is provided on the housing (10); the driven member (22) is a coil, the second magnetic member (50) is arranged opposite to the first magnetic member, and the second magnetic member (50) is used to cooperate with the first magnetic member to keep the support frame (21) in the initial position when the coil is de-energized, and the coil is driven when energized to drive the support frame (21) to move along the straight line.

3. The linear vibration motor (100) according to claim 2, wherein: The housing (10) comprises a front shell (12) and a base plate (13); the front shell (12) is a groove structure; the base plate (13) is covered on the groove structure to enclose the receiving space (11) together with the groove structure; the receiving groove (211) is provided on a side of the support frame (21) facing the front shell (12) and extends along the straight line; the inner wall of the receiving groove (211) and the inner wall of the front shell (12) clamp and fix the supporting component (40); the supporting component (40) is a ball.

4. The linear vibration motor (100) according to claim 3, wherein: The inner wall of the front shell (12) comprises a front wall (121) opposite to the support frame (21), and a side wall (122) surrounding the front wall (121) and connected to the front wall (121); the inner wall of the accommodating groove (211) comprises an inclined wall (2111) arranged at an angle to the front wall (121); and the ball is located between the front wall (121), the side wall (122) and the inclined wall (2111).

5. The linear vibration motor (100) according to claim 4, wherein: The included angle between the inclined wall (2111) and the front wall (121) is 30° to 60°.

6. The linear vibration motor (100) according to any one of claims 3 to 5, wherein: The support frame (21) is provided with an anti-collision portion (212) on a side facing away from the accommodating groove (211); in a direction perpendicular to the substrate (13), the width of a gap between the anti-collision portion (212) and the substrate (13) is smaller than the height of the support component (40); the anti-collision portion (212) is used to prevent the support frame (21) from colliding with the substrate (13).

7. The linear vibration motor (100) according to claim 2, wherein: The housing (10) comprises a front housing (12) and a base plate (13); the front housing (12) is a groove structure; the base plate (13) is covered on the groove structure to enclose the receiving space (11) together with the groove structure; the receiving groove (211) is provided on a side of the support frame (21) facing the base plate (13) and extends along the straight line; the inner wall of the receiving groove (211) and the base plate (13) clamp and fix the supporting component (14); the supporting component (40) is a ball.

8. The linear vibration motor (100) according to claim 7, wherein: The front housing (12) comprises a side wall (122) arranged around the base plate (13) and connected to the base plate (13); the inner wall of the accommodating groove (211) comprises an inclined wall (2111) arranged at an angle to the base plate (13); and the ball bearing is located between the base plate (13), the side wall (122) and the inclined wall (2111).

9. The linear vibration motor (100) according to claim 8, wherein: The included angle between the inclined wall (2111) and the base plate (13) is 30° to 60°.

10. The linear vibration motor (100) according to any one of claims 7 to 9, wherein: The support frame (21) is provided with an anti-collision portion (212) on a side facing away from the accommodating groove (211); in a direction perpendicular to the base plate (13), the width of a gap between the anti-collision portion (212) and the base plate (13) is smaller than the height of the support component (14); the anti-collision portion (212) is used to prevent the support frame (21) from colliding with the front housing (12).

11. The linear vibration motor (100) according to claim 2, wherein: The second magnetic part (50) is a magnetic yoke.

12. The linear vibration motor (100) according to claim 2, wherein: The second magnetic member (50) is a magnetic steel, and the magnetic pole orientation of the second magnetic member (50) is set to be opposite to the magnetic pole orientation of the first magnetic member.

13. An electronic device (200), comprising a device body (210) and the linear vibration motor (100) according to claim 1, wherein the linear vibration motor (100) is arranged on the device body (210).

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