Linear vibration motor and electronic device
Patent Information
- Application Number
- CN202521174315.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-06-09
AI Technical Summary
相关技术中，线性马达的振感模式单一，带来的振动感知不够丰富
[0031]本公开的线性振动马达，两个动子的轴向相互垂直，定子能够驱动其中一个动子沿第二方向往复运动产生振动，驱动另一个动子沿第三方向往复运动产生振动，从而实现两个动子沿两个不同的方向双向振动，两个动子运动方式互不干扰，能够带来更加丰富的振感体验。
Smart Images
Figure CN224818013U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of vibration motor technology, and more particularly to a linear vibration motor and electronic device. Background Technology
[0002] With the development of electronic technology, portable consumer electronics products are becoming increasingly popular, such as mobile phones, handheld game consoles, navigation devices, and handheld multimedia entertainment devices. These electronic products generally use vibration motors for system feedback, such as call alerts, message alerts, navigation prompts on mobile phones, and vibration feedback on game consoles. Among related technologies, linear motors have a single vibration mode, resulting in insufficient vibration perception. Utility Model Content
[0003] This disclosure provides a linear vibration motor and electronic device to solve at least some of the related technical problems.
[0004] In a first aspect, embodiments of this disclosure provide a linear vibration motor, comprising:
[0005] case;
[0006] Two moving parts are spaced apart within the housing along a first direction, and the axes of the two moving parts are perpendicular to each other; the axis of one moving part is along a second direction, and the axis of the other moving part is along a third direction, both of which are perpendicular to the first direction;
[0007] The stator is fixedly disposed within the housing and located between the two movers; the stator is used to drive one of the movers to reciprocate along the second direction and to drive the other mover to reciprocate along the third direction.
[0008] In some possible implementations, the stator includes:
[0009] The core is fixedly disposed within the housing and located between the two moving parts;
[0010] Two first magnets are respectively disposed at both ends of the core along the second direction;
[0011] Two second magnets are respectively disposed at both ends of the core along the third direction;
[0012] Two first magnets are used to drive one of the movers to reciprocate along the second direction, and two second magnets are used to drive the other mover to reciprocate along the third direction.
[0013] In some possible implementations, the first magnet is a magnet, the first magnet includes a first magnetic pole and a second magnetic pole, and the first magnetic poles of the two first magnets are arranged facing each other; and / or
[0014] The second magnet is a magnet, and the second magnet includes a third magnetic pole and a fourth magnetic pole, with the third magnetic poles of two second magnets arranged facing each other; and / or
[0015] Both the first magnet and the second magnet are magnets. The first magnet includes a first magnetic pole and a second magnetic pole, and the first magnetic poles of the two first magnets are arranged facing each other. The second magnet includes a third magnetic pole and a fourth magnetic pole, and the third magnetic poles of the two second magnets are arranged facing each other. The first magnetic pole and the third magnetic pole are the same, and the second magnetic pole and the fourth magnetic pole are the same.
[0016] In some possible implementations, the core has first receiving slots at both ends along the second direction, and the two first magnets are respectively embedded in the two first receiving slots; and / or
[0017] The core has second receiving slots at both ends along the third direction, and the two second magnets are respectively embedded in the two second receiving slots.
[0018] In some possible implementations, the line connecting the center points of the two first magnets lies in a first plane perpendicular to the first direction; and / or
[0019] The line connecting the center points of the two second magnets lies in a second plane perpendicular to the first direction; and / or
[0020] The line connecting the center points of the two first magnets lies in a first plane perpendicular to the first direction; the line connecting the center points of the two second magnets lies in a second plane perpendicular to the first direction; the first plane may coincide with or not coincide with the second plane.
[0021] In some possible implementations, the mover includes a support and a coil, the coil being wound around the outer periphery of the support about its axial direction; the axes of the supports of the two movers are perpendicular to each other; the axis of the support of one mover is along a second direction, and the axis of the support of the other mover is along a third direction.
[0022] In some possible implementations, the mover further includes two mass blocks, respectively disposed at both ends of the support along the axial direction; in a direction perpendicular to the axial direction of the support, the length of the mass blocks is greater than the length of the support, and the coil is located between the two mass blocks.
[0023] In some possible implementations, the two moving parts include a first moving part and a second moving part, the first moving part having an axial direction along the second direction, and the second moving part having an axial direction along the third direction; the linear vibration motor further includes:
[0024] Two first elastic elements are respectively connected to both ends of the first moving part along the second direction; one end of the first elastic element is connected to the mass block of the first moving part, and the other end is connected to the housing; the first moving part is suspended inside the housing by the two first elastic elements; and / or
[0025] Two second elastic elements are respectively connected to the two ends of the second mover along the third direction; one end of the second elastic element is connected to the mass block of the second mover, and the other end is connected to the housing, and the second mover is suspended in the housing by the two second elastic elements.
[0026] In some possible implementations, the two moving parts include a first moving part and a second moving part, the first moving part having an axial direction along the second direction, and the second moving part having an axial direction along the third direction; the linear vibration motor further includes:
[0027] Two first elastic elements are respectively connected to both ends of the first moving element along the second direction; one end of the first elastic element is connected to the first moving element, and the other end is connected to the housing; the first moving element is suspended inside the housing by the two first elastic elements; and / or
[0028] Two second elastic elements are respectively connected to the two ends of the second mover along the third direction; one end of the second elastic element is connected to the second mover, and the other end is connected to the housing, and the second mover is suspended in the housing by the two second elastic elements.
[0029] In a second aspect, embodiments of this disclosure provide an electronic device including the linear vibration motor described in the first aspect.
[0030] The technical solutions provided by the embodiments of this disclosure can achieve at least the following beneficial technical effects:
[0031] The linear vibration motor disclosed herein has two movers whose axes are perpendicular to each other. The stator can drive one mover to reciprocate along a second direction to generate vibration, and drive the other mover to reciprocate along a third direction to generate vibration, thereby realizing bidirectional vibration of the two movers in two different directions. The movement modes of the two movers do not interfere with each other, which can bring a richer vibration experience.
[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the structure of a linear vibration device in an exemplary embodiment of this disclosure.
[0035] Figure 2 yes Figure 1 Top view after removing the shell.
[0036] Figure 3 yes Figure 2 The front view.
[0037] Figure 4 yes Figure 3 A schematic diagram with the casing added.
[0038] Figure 5 yes Figure 2 The right view.
[0039] Figure 6 yes Figure 5 A schematic diagram with the casing added. Detailed Implementation
[0040] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0041] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movements between components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.
[0042] The linear vibration motor and electronic device of this disclosure will now be described in detail with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementations can be combined with each other.
[0043] This disclosure provides an electronic device including a linear vibration motor. The electronic device can be a consumer electronics product such as a mobile phone, tablet computer, handheld game console, navigation device, or handheld multimedia entertainment device. The linear vibration motor is used to transmit system feedback to the user, such as call notifications, message notifications, navigation prompts on a mobile phone, and vibration feedback from a game console. The linear vibration motor has a fast response speed and strong vibration, and its vibration direction, frequency, and waveform are all adjustable, thus enabling the achievement of relatively complex and customized vibration effects.
[0044] See Figures 1 to 6 As shown, a linear vibration motor may include a housing 10, a stator 20, and two rotors 30. Figures 3 to 6 As shown, two movers 30 are spaced apart within the housing 10 along a first direction Z, and the axial directions of the two movers 30 (as shown by the dotted lines in the figure) are perpendicular to each other. One mover 30 has its axial direction along a second direction X, and the other mover 30 has its axial direction along a third direction Y. Both the second direction X and the third direction Y are perpendicular to the first direction Z. A stator 20 is fixedly disposed within the housing 10 and located between the two movers 30. The stator 20 is used to drive one mover to reciprocate along the second direction X to generate vibration, and to drive the other mover to reciprocate along the third direction Y to generate vibration.
[0045] In this embodiment, the two movers 30 include a first mover 31 and a second mover 32. The axial direction of the first mover 31 (as shown by the dashed line in the figure) is along the second direction X, and the axial direction of the second mover 32 (as shown by the dashed line in the figure) is along the third direction Y. The stator 20 is located between the first mover 31 and the second mover 32, and is used to drive the first mover 31 to reciprocate along the second direction X to generate vibration, and to drive the second mover 32 to reciprocate along the third direction Y to generate vibration.
[0046] Through the above technical solution, the axes of the two movers 30 of the linear vibration motor are perpendicular to each other. The stator 20 can drive one of the movers 30 to reciprocate along the second direction X to generate vibration, and drive the other mover 30 to reciprocate along the third direction Y to generate vibration, thereby realizing bidirectional vibration of the two movers 30 in two different directions, and the movement modes of the two movers 30 do not interfere with each other, which can bring a richer vibration experience.
[0047] In some possible implementations, the stator 20 includes a core 21, two first magnets 22, and two second magnets 23. The core 21 is fixedly disposed within the housing 10 and located between the two movers 30, i.e., between the first movers 31 and the second movers 32. The two first magnets 22 are respectively disposed at both ends of the core 21 along a second direction X. The two second magnets 23 are respectively disposed at both ends of the core 21 along a third direction Y. The two first magnets 22 are used to drive one of the movers 30 to reciprocate along the second direction X, and the two second magnets 23 are used to drive the other mover 30 to reciprocate along the third direction Y.
[0048] Understandably, the two first magnets 22 are used to drive the first mover 31 to reciprocate along the second direction X, and the two second magnets 23 are used to drive the second mover 32 to reciprocate along the third direction Y, thereby realizing the bidirectional vibration of the first mover 31 and the second mover 32 in two different directions.
[0049] In some possible implementations, the first magnet 22 is a magnet, and the first magnet 22 includes a first magnetic pole and a second magnetic pole. The first magnetic poles of the two first magnets 22 are arranged facing each other, so that the forces exerted by the two first magnets 22 on the first mover 31 are in opposite directions, thereby driving the first mover 31 to reciprocate along the second direction X. In this embodiment, the first magnetic pole is the N pole and the second magnetic pole is the S pole.
[0050] The second magnet 23 is a magnet, and it includes a third magnetic pole and a fourth magnetic pole. The third magnetic poles of the two second magnets 23 are arranged facing each other. This causes the two second magnets 23 to exert forces on the second mover 32 in opposite directions, thereby driving the second mover 32 to reciprocate along the third direction Y. In this embodiment, the third magnetic pole is the N pole and the fourth magnetic pole is the S pole.
[0051] In some possible implementations, both the first magnet 22 and the second magnet 23 are magnets. The first magnet 22 includes a first magnetic pole and a second magnetic pole, with the first magnetic poles of the two first magnets 22 facing each other. The second magnet 23 includes a third magnetic pole and a fourth magnetic pole, with the third magnetic poles of the two second magnets 23 facing each other. The first and third magnetic poles are identical, and the second and fourth magnetic poles are identical. This causes the forces exerted by the two first magnets 22 on the first mover 31 to be in opposite directions, driving the first mover 31 to reciprocate along the second direction X. The forces exerted by the two second magnets 23 on the second mover 32 are in opposite directions, driving the second mover 32 to reciprocate along the third direction Y. Having identical first and third magnetic poles, and identical second and fourth magnetic poles, reduces interference from the first magnet 22 on the second mover 32 and from the second magnet 23 on the first mover 31. In this embodiment, the first and third magnetic poles are N poles, and the second and fourth magnetic poles are S poles.
[0052] In some possible implementations, the core 21 has first receiving grooves at both ends along the second direction X, and two first magnets 22 are respectively embedded in the two first receiving grooves, thereby limiting and fixing the position of the first magnets 22. The core 21 has second receiving grooves at both ends along the third direction Y, and two second magnets 23 are respectively embedded in the two second receiving grooves, thereby limiting and fixing the position of the second magnets 23.
[0053] Furthermore, the first magnet 22 is embedded in the first receiving groove, and its surface does not protrude from the surface of the core 21 or is flush with the surface of the core 21. The second magnet 23 is embedded in the second receiving groove, and its surface does not protrude from the surface of the core 21 or is flush with the surface of the core 21. In this way, neither the first magnet 22 nor the second magnet 23 occupies space in the thickness direction of the stator 20, which can reduce the overall thickness of the stator 20.
[0054] In some possible implementations, the line connecting the center points of the two first magnets 22 lies in a first plane perpendicular to the first direction Z. Thus, with the two first magnets 22 located in the same plane, the forces exerted by both on the first mover 31 are also in the same plane, making the movement of the first mover 31 more balanced.
[0055] The line connecting the center points of the two second magnets 23 lies in a second plane perpendicular to the first direction Z. Thus, the two second magnets 23 are located in the same plane, ensuring that the forces they exert on the second mover 32 are also in the same plane, making the motion of the second mover 32 more balanced.
[0056] In some other possible embodiments, the line connecting the center points of the two first magnets 22 lies in a first plane perpendicular to the first direction Z. Having the two first magnets 22 in the same plane ensures that their forces on the first mover 31 are also in the same plane, resulting in more balanced motion of the first mover 31. Similarly, the line connecting the center points of the two second magnets 23 lies in a second plane perpendicular to the first direction Z. Having the two second magnets 23 in the same plane also ensures that their forces on the second mover 32 are also in the same plane, resulting in more balanced motion of the second mover 32. The first plane coincides with the second plane, meaning that both the two first magnets 22 and the two second magnets 23 lie in the same plane, allowing for a more compact structure of the stator 20.
[0057] In some other possible embodiments, the line connecting the center points of the two first magnets 22 lies in a first plane perpendicular to the first direction Z. Having the two first magnets 22 in the same plane ensures that their forces on the first mover 31 are also in the same plane, making the motion of the first mover 31 more balanced. Similarly, the line connecting the center points of the two second magnets 23 lies in a second plane perpendicular to the first direction Z. Having the two second magnets 23 in the same plane also ensures that their forces on the second mover 32 are also in the same plane, making the motion of the second mover 32 more balanced. In some cases, the first and second planes do not coincide, and the two first magnets 22 and two second magnets 23 lie in different planes. The two first magnets 22 can be located closer to the first mover 31, increasing their force on the first mover 31. The two second magnets 23 can be located closer to the second mover 32, increasing their force on the second mover 32, thereby improving the vibration effect of both the first and second movers 31.
[0058] In some possible embodiments, the mover 30 includes a support 33 and a coil 34, the coil 34 being wound around the outer periphery of the support 33 about its axial direction. The axial directions of the supports 33 of the two movers 30 (as shown by the dashed lines in the figure) are perpendicular to each other. The axial direction of the support 33 of one mover 30 (as shown by the dashed lines in the figure) is along a second direction X, and the axial direction of the support 33 of the other mover (as shown by the dashed lines in the figure) is along a third direction Y.
[0059] Thus, when a changing current is passed through the coils of the two movers, they are subjected to Lorentz forces in the magnetic fields of the first and second magnets of the stator, respectively. The magnetic fields generate induced electromotive forces. The first mover 31 is driven by the Ampere force in the X direction and vibrates relative to the housing 10 in the X direction; the second mover 32 is driven by the Ampere force in the Y direction and vibrates relative to the housing 10 in the Y direction. This achieves the reciprocating motion of the two movers in fixed directions along their respective axes to generate vibration. Furthermore, the two movers move independently and do not interfere with each other.
[0060] In some possible implementations, the mover 30 may further include two mass blocks 35, respectively disposed at both ends of the support 33 along the axial direction. In a direction perpendicular to the axial direction of the support 33, the length of the mass blocks 35 is greater than the length of the support 33, and the coil 34 is located between the two mass blocks 35. It is understood that the two mass blocks 35 of the first mover 31 are disposed at both ends of its support 33 along the second direction X. The two mass blocks 35 of the second mover 32 are disposed at both ends of its support 33 along the third direction Y. The mass blocks 35 can increase the weight of the mover 30, making the mover 30 more balanced during movement.
[0061] In some possible implementations, the two movers 30 include a first mover 31 and a second mover 32, with the axial direction of the first mover 31 along a second direction X and the axial direction of the second mover 32 along a third direction Y. The linear vibration motor may also include two first elastic elements 36 and two second elastic elements 37.
[0062] Two first elastic elements 36 are respectively connected to the two ends of the first mover 31 along the second direction X. One end of the first elastic element 36 is connected to the first mover 31, and the other end is connected to the housing 10. The first mover 31 is suspended inside the housing 10 by the two first elastic elements 36. During the reciprocating motion of the first mover 31, the first elastic elements 36 can generate a reverse elastic restoring force on the first mover 31, enhancing the continuity of the reciprocating motion of the first mover 31. Optionally, the first elastic element 36 can be a spring or a sheet spring. In this embodiment, one end of the first elastic element 36 is connected to the mass block 35 of the first mover 31, and the other end is connected to the housing 10. The mass block 35 has high structural strength, and the connection between the first elastic element 36 and the mass block 35 can be more secure.
[0063] Two second elastic elements 37 are respectively connected to the two ends of the second mover 32 along the third direction Y. One end of the second elastic element 37 is connected to the second mover 32, and the other end is connected to the housing 10. The second mover 32 is suspended inside the housing 10 by the two second elastic elements 37. During the reciprocating motion of the second mover 32, the second elastic elements 37 can generate a reverse elastic restoring force on the second mover 32, enhancing the continuity of the reciprocating motion of the second mover 32. Optionally, the second elastic element 37 can be a spring or a sheet spring. In this embodiment, one end of the second elastic element 37 is connected to the mass block 35 of the second mover 32, and the other end is connected to the housing 10. The mass block 35 has high structural strength, and the connection between the second elastic element 37 and the mass block 35 can be more secure.
[0064] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. A linear vibration motor, characterized in that, include: case; Two moving parts are spaced apart within the housing along a first direction, and the axes of the two moving parts are perpendicular to each other; the axis of one moving part is along a second direction, and the axis of the other moving part is along a third direction, both of which are perpendicular to the first direction; The stator is fixedly disposed within the housing and located between the two movers; the stator is used to drive one of the movers to reciprocate along the second direction and to drive the other mover to reciprocate along the third direction.
2. The linear vibration motor according to claim 1, characterized in that, The stator includes: The core is fixedly disposed within the housing and located between the two moving parts; Two first magnets are respectively disposed at both ends of the core along the second direction; Two second magnets are respectively disposed at both ends of the core along the third direction; Two first magnets are used to drive one of the movers to reciprocate along the second direction, and two second magnets are used to drive the other mover to reciprocate along the third direction.
3. The linear vibration motor according to claim 2, characterized in that, The first magnet is a magnet, and the first magnet includes a first magnetic pole and a second magnetic pole, with the first magnetic poles of the two first magnets arranged facing each other; and / or The second magnet is a magnet, and the second magnet includes a third magnetic pole and a fourth magnetic pole, with the third magnetic poles of the two second magnets facing each other; and / or Both the first magnet and the second magnet are magnets. The first magnet includes a first magnetic pole and a second magnetic pole, and the first magnetic poles of the two first magnets are arranged facing each other. The second magnet includes a third magnetic pole and a fourth magnetic pole, and the third magnetic poles of the two second magnets are arranged facing each other; the first magnetic pole and the third magnetic pole are the same, and the second magnetic pole and the fourth magnetic pole are the same.
4. The linear vibration motor according to claim 2, characterized in that, The core has first receiving slots at both ends along the second direction, and the two first magnets are respectively embedded in the two first receiving slots; and / or The core has second receiving slots at both ends along the third direction, and the two second magnets are respectively embedded in the two second receiving slots.
5. The linear vibration motor according to claim 2, characterized in that, The line connecting the center points of the two first magnets lies in a first plane perpendicular to the first direction; or The line connecting the center points of the two second magnets lies in a second plane perpendicular to the first direction; or The line connecting the center points of the two first magnets lies in a first plane perpendicular to the first direction; The line connecting the center points of the two second magnets lies in a second plane perpendicular to the first direction; the first plane may or may not coincide with the second plane.
6. The linear vibration motor according to claim 1, characterized in that, The mover includes a support and a coil, the coil being wound around the outer periphery of the support along its axial direction; the axes of the supports of the two movers are perpendicular to each other; the axis of the support of one mover is along a second direction, and the axis of the support of the other mover is along a third direction.
7. The linear vibration motor according to claim 6, characterized in that, The mover also includes two mass blocks, which are respectively disposed at both ends of the bracket along the axial direction; in the direction perpendicular to the axial direction of the bracket, the length of the mass block is greater than the length of the bracket, and the coil is located between the two mass blocks.
8. The linear vibration motor according to claim 7, characterized in that, The two moving parts include a first moving part and a second moving part, wherein the axial direction of the first moving part is along the second direction, and the axial direction of the second moving part is along the third direction; the linear vibration motor further includes: Two first elastic elements are respectively connected to both ends of the first moving part along the second direction; one end of the first elastic element is connected to the mass block of the first moving part, and the other end is connected to the housing; the first moving part is suspended inside the housing by the two first elastic elements; and / or Two second elastic elements are respectively connected to the two ends of the second mover along the third direction; one end of the second elastic element is connected to the mass block of the second mover, and the other end is connected to the housing, and the second mover is suspended in the housing by the two second elastic elements.
9. The linear vibration motor according to claim 1, characterized in that, The two moving parts include a first moving part and a second moving part, wherein the axial direction of the first moving part is along the second direction, and the axial direction of the second moving part is along the third direction; the linear vibration motor further includes: Two first elastic elements are respectively connected to both ends of the first moving element along the second direction; one end of the first elastic element is connected to the first moving element, and the other end is connected to the housing; the first moving element is suspended inside the housing by the two first elastic elements; and / or Two second elastic elements are respectively connected to the two ends of the second mover along the third direction; one end of the second elastic element is connected to the second mover, and the other end is connected to the housing, and the second mover is suspended in the housing by the two second elastic elements.
10. An electronic device, characterized in that, The linear vibration motor included in any one of claims 1-9.