Vibration device

Abstract

The present invention provides a vibration device, comprising: a housing having a mounting cavity formed therein; a vibrator assembly suspended in the mounting cavity, the vibrator assembly comprising a magnetic circuit system; a stator assembly provided in the mounting cavity and connected to the housing, the stator assembly comprising a support, a first coil wound on the support, and a second coil assembled on the support, the axial direction of the first coil being a first direction, the axial direction of the second coil being a second direction, the first direction being perpendicular to the second direction, the first coil and the second coil being respectively energized to drive the vibrator assembly to vibrate in the first direction and the second direction, the support comprising a coil frame and two fixing portions provided at two ends of the coil frame, the first coil being wound around the coil frame and located between the two fixing portions, and the fixing portions being provided with fixing slots for accommodating part of the second coil; and an elastic assembly used for elastically connecting the housing and the vibrator assembly. The present invention can solve the problem that vibration directions cannot be well distinguished in existing vibration devices.

Description

Vibration device Technical Field

[0001] [Revised according to Article 91, 26.09.2025] This invention relates to the field of vibration sound generation technology, and more specifically, to a vibration device. Background Technology

[0002] Currently, vibration devices are increasingly used in electronic devices such as mobile phones, tablets, and laptops. As the application scenarios for vibration devices expand, various performance requirements are being placed on them. As vibration excitation devices, the ability to achieve multiple vibration modes within an effective space and provide a richer user experience is inevitably the trend in the development of vibration devices.

[0003] Existing dual-frequency bidirectional vibration devices can not clearly distinguish the vibration direction when vibration is excited in one direction, as vibration in the other direction is also excited. Summary of the Invention

[0004] In view of the above problems, the purpose of the present invention is to provide a vibration device to solve the problem that existing vibration devices cannot distinguish the vibration direction well.

[0005] This invention provides a vibration device, comprising:

[0006] A housing, the interior of which is formed a mounting cavity;

[0007] An oscillator assembly suspended in the mounting cavity, the oscillator assembly including a magnetic circuit system;

[0008] A stator assembly is disposed in the mounting cavity and connected to the housing assembly and located in the magnetic field of the magnetic circuit system. The stator assembly includes a bracket, a first coil wound on the bracket, and a second coil mounted on the bracket. The first coil has an axial direction in a first direction, and the second coil has an axial direction in a second direction. The first direction is perpendicular to the second direction. The first coil and the second coil are respectively energized to drive the oscillator assembly to vibrate along the first direction and the second direction, respectively. The bracket includes a coil frame and two fixing parts disposed at both ends of the coil frame. The first coil is wound on the coil frame and located between the two fixing parts. The fixing parts have fixing grooves for accommodating a portion of the second coil.

[0009] An elastic component is provided for elastically connecting the housing and the oscillator assembly.

[0010] Furthermore, in a preferred embodiment, the fixing part includes a fixing block, a fixing plate, and a fixing component, wherein,

[0011] Both the fixing block and the fixing plate are connected to the coil frame. The fixing plate and the fixing block are stacked along the second direction. The fixing member is connected to the fixing block and is spaced apart from the fixing plate to form the fixing groove.

[0012] Furthermore, in a preferred embodiment, the length of the fixing block along a third direction perpendicular to both the first and second directions is greater than the length of the fixing plate along that third direction; and / or,

[0013] The thickness of the fixing block along the first direction is greater than the thickness of the fixing part along the first direction; and / or,

[0014] The fastener is connected to the side of the fixing block away from the coil frame, and the height of the fixing block along the second direction is less than the height of the fastener along the second direction.

[0015] Furthermore, in a preferred embodiment, the fastener is connected to the side of the fixing block away from the coil frame, and the fixing block and the fastener are flush with the end face of the housing.

[0016] Furthermore, a preferred embodiment is that the bracket is an integral structure made of magnetically conductive material.

[0017] Furthermore, in a preferred embodiment, the magnetic circuit system includes two sets of magnet assemblies spaced apart along a third direction perpendicular to the first and second directions, and a magnetic guide plate fixed to the magnet assemblies; wherein,

[0018] The stator assembly is located between the two sets of magnet assemblies and is spaced apart from each other, and the magnetic guide plate is located on the side of the magnet assembly away from the stator assembly;

[0019] The magnet assembly includes at least two side magnets and a central magnet sandwiched between the side magnets. The magnetic guide plate is U-shaped to enclose and secure each magnet assembly, or...

[0020] The magnetic guide plate is plate-shaped and is fixed to the side of the magnet assembly away from the stator assembly.

[0021] Furthermore, in a preferred embodiment, the magnetization directions of the central magnets of the two sets of magnet assemblies are opposite and parallel to the third direction, the magnetization directions of the opposite side magnets of the two magnet assemblies along the third direction are the same, the magnetization directions of the two side magnets of each set of magnet assemblies are opposite and parallel to the first direction, and the polarity of the end face of the central magnet of each set of magnet assemblies facing the stator assembly is the same as the polarity of the end face of the side magnets facing the central magnet.

[0022] Furthermore, in a preferred embodiment, the oscillator assembly further includes a mass block for accommodating the magnetic circuit system, and the mass block is connected to the housing via the elastic component.

[0023] Furthermore, in a preferred embodiment, foam is sandwiched between the mass block and the elastic component along the first direction.

[0024] Furthermore, in a preferred embodiment, the mass block is provided with stops between its two sides and the housing along the first direction.

[0025] As can be seen from the above technical solution, the vibration device provided by the present invention adopts a different support structure from the traditional one. The first coil is wound on the coil frame, and the second coil is directly assembled on the support, thereby overcoming the difficulty of winding the second coil and making the coil assembly process easier to achieve. In addition, the magnetic circuit system can be driven separately in different directions. The axis of the first coil is the first direction, and the axis of the second coil is the second direction. The first direction and the second direction are perpendicular to each other and form separate circuits. The first coil and the second coil are energized to drive the oscillator assembly to vibrate along the first direction and the second direction respectively, thereby making the vibration direction clearer.

[0026] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0027] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings. In the drawings:

[0028] Figure 1 is a schematic diagram of the exploded structure of the vibration device according to an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the magnetic circuit and electrical circuit of the vibration device according to an embodiment of the present invention;

[0030] Figure 3 is a cross-sectional view of the vibration device according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the bracket according to an embodiment of the present invention;

[0032] Figure 5 is a schematic diagram of the bracket and coil assembly according to an embodiment of the present invention.

[0033] The reference numerals in the accompanying drawings include: 1. upper shell, 2. stop block, 3. spring piece, 4. magnetic plate, 5. side magnet, 6. center magnet, 7. mass block, 8. foam, 9. bracket, 10. first coil, 11. second coil, 12. FPC, 13. lower shell, 91. coil frame, 92. first fixing block, 93. second fixing block, 94. first fixing component, 95. second fixing component, 96. first fixing plate, 97. second fixing plate, 98. fixing groove.

[0034] In all the accompanying drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed Implementation

[0035] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0036] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] In response to the aforementioned problem that existing vibration devices cannot effectively distinguish the direction of vibration, this invention proposes a vibration device.

[0038] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] To illustrate the structure of the vibration device provided by the present invention, Figures 1 to 5 illustrate the structure of the vibration device from different angles. Specifically, Figure 1 shows the exploded structure of the vibration device according to an embodiment of the present invention; Figure 2 shows the magnetic circuit and electrical circuit diagram of the vibration device according to an embodiment of the present invention; Figure 3 shows the cross-sectional structure of the vibration device according to an embodiment of the present invention; Figure 4 shows the support according to an embodiment of the present invention; and Figure 5 shows the support and coil assembly according to an embodiment of the present invention.

[0040] As shown in Figures 1 to 5, the vibration device provided by the present invention includes: a housing with an installation cavity formed inside; an oscillator assembly suspended in the installation cavity, the oscillator assembly including a magnetic circuit system; a stator assembly disposed in the installation cavity and connected to the housing, and situated in the magnetic field of the magnetic circuit system, wherein the stator assembly includes a support 9, a first coil 10 wound on the support 9, and a second coil 11 assembled on the support 9, wherein the axial direction of the first coil 10 is a first direction, the axial direction of the second coil 11 is a second direction, the first direction is perpendicular to the second direction, and the first coil 10 and the second coil 11 are respectively energized to drive the oscillator assembly to vibrate along the first direction and the second direction respectively; the support 9 includes a coil frame 91 and two fixing portions disposed at both ends of the coil frame 91, the first coil 10 is wound on the coil frame 91 and located between the two fixing portions, the fixing portions having fixing grooves for accommodating a portion of the second coil; and an elastic component for connecting the housing and the oscillator assembly.

[0041] In an embodiment of the present invention, the first coil 10 is directly wound around the coil frame 91 of the support 9. Due to the special structure of the support 9, the second coil 11, which has been pre-made, is assembled in the vertical direction. That is, the first coil 10 is wound around the support 9, and the second coil 11 is pre-made and then assembled onto the support 9. This special support structure design makes the first coil 10 and the second coil 11 separate circuits, and the magnetic circuit system generates separate drives in different directions. The vibration component includes a magnetic circuit system, which is connected to the mass block 7. The mass block 7 is connected to the housing component through an elastic component. The two coils are separate circuits, and the magnetic circuit system can be driven separately in different directions. When the first coil 10 is energized, the magnetic circuit system excites a first directional frequency and generates a first directional driving force. When the second coil 11 is energized, the magnetic circuit system excites a second directional frequency and generates a second directional driving force.

[0042] In the embodiments shown in Figures 4 and 5, the support 9 includes a coil frame 91 and two fixing parts disposed at both ends of the coil frame 91. Each fixing part includes a fixing block, a fixing plate, and a fixing member. Both the fixing block and the fixing plate are connected to the coil frame 91. The fixing plate and the fixing block are stacked along the second direction. The fixing member is connected to the fixing block and spaced apart from the fixing plate to form the fixing groove 98, which is used to fix and accommodate the second coil 11.

[0043] The fixing blocks include a first fixing block 92 and a second fixing block 93, and the fixing plates include a first fixing plate 96 and a second fixing plate 97. The fixing plates are located at the lower ends of the coil frame 91. The fixing members include a first fixing member 94 and a second fixing member 95. The fixing blocks include a first fixing block 92 and a second fixing block 93, that is, the first fixing member 94 is located on one side of the first fixing block 92, and the second fixing member 95 is located on one side of the second fixing block 93. Since the first coil 10 is wound on the coil frame 91, the fixing blocks are used to limit the first coil 10 on the coil frame 91. That is, the first fixing block 92 and the second fixing block 93 are located on both sides of the coil frame 91 to limit the winding range of the first coil 10 and limit the first coil 10 on the coil frame 91.

[0044] The fixing members in the bracket 9 serve to provide support and conduct magnetism, and the fixing members (first fixing member 94 and second fixing member 95) are connected to the housing. More specifically, the fixing members (first fixing member 94 and second fixing member 95) are connected to the fixing blocks (first fixing block 92 and second fixing block 93) on the side away from the coil frame 91, and the fixing blocks and fixing members are flush with the end face of the housing.

[0045] Wherein, the length of the fixing block (first fixing block 92 and second fixing block 93) along a third direction perpendicular to the first direction and the second direction is greater than the length of the fixing plate (first fixing plate 96 and second fixing plate 97) along the third direction; and / or, the thickness of the fixing block (first fixing block 92 and second fixing block 93) along the first direction is greater than the thickness of the fixing part along the first direction; and / or, the fixing member (first fixing member 94 and second fixing member 95) is connected to the side of the fixing block (first fixing block 92 and second fixing block 93) away from the coil frame 91, and the height of the fixing block (first fixing block 92 and second fixing block 93) along the second direction is less than the height of the fixing member (first fixing member 94 and second fixing member 95) along the second direction.

[0046] The bracket 9 is an integral structure made of magnetically conductive material. The magnetically conductive bracket is beneficial for guiding magnetic lines of force.

[0047] The special structure of the bracket 9 allows the first coil 10 to be directly wound on the coil skeleton 91 of the bracket 9, and the second coil 11, which has been prepared in advance, to be assembled in the vertical direction, thus overcoming the difficulty of winding the second coil 11 in traditional bracket assemblies.

[0048] Furthermore, in embodiments of the present invention, the stator assembly also includes an FPC (Flexible Printed Circuit), which connects the external circuitry to the coils.

[0049] [Correction 26.09.2025 according to Rule 91] In the embodiment shown in Figure 2, the direction of the solid arrow represents the direction of the magnetic circuit, and the direction of the dashed arrow represents the direction of the current. The magnetic circuit system can be driven separately in different directions. When the first coil is energized, the magnetic circuit system excites the X-direction (first direction) frequency to generate the X-direction driving force; when the second coil is energized, the magnetic circuit system excites the Z-direction (second direction) frequency to generate the Z-direction driving force.

[0050] In an embodiment of the present invention, the magnetic circuit system includes two sets of magnet assemblies spaced apart along a third direction perpendicular to the first direction and the second direction, and a magnetic guide plate 4 fixed to the magnet assemblies. The stator assembly is located between the two sets of magnet assemblies and spaced apart from each other. The magnetic guide plate is located on the side of the magnet assembly away from the stator assembly. The magnet assembly includes at least two side magnets 5 and a center magnet 6 sandwiched between the side magnets 5. The magnetic guide plate 4 is U-shaped, and each U-shaped magnetic guide plate wraps and fixes each set of magnet assemblies; or the magnetic guide plate 4 is plate-shaped and fixed to the side of the magnet assembly away from the stator assembly.

[0051] In this configuration, the central magnets of the two sets of magnet assemblies are magnetized in opposite directions and parallel to the third direction. The side magnets of the two magnet assemblies are magnetized in the same direction along the third direction. The two side magnets of each set of magnet assemblies are magnetized in opposite directions and parallel to the first direction. The polarity of the end face of the central magnet of each set of magnet assemblies facing the stator assembly is the same as the polarity of the end face of the side magnets facing the central magnet.

[0052] The oscillator assembly further includes a mass block 7, which houses the magnetic circuit system and is connected to the elastic component. Along the first direction, a foam 10 is sandwiched between the mass block 7 and the elastic component, providing damping. Furthermore, baffles 2 are provided on both sides of the mass block 7 along the first direction between it and the housing, reinforcing the force between the mass block 7 and the housing.

[0053] In the implementation of the present invention, the elastic component includes two spring pieces 3, which are located on both sides of the magnetic plate 4 along the vibration direction of the oscillator assembly. One end of the spring piece 3 is fixed to the mass block 7, and the other end is fixed to the housing.

[0054] The spring piece 3 includes a spring arm and bent portions at both ends of the spring arm. The spring arm is flat, and the bent portions at both ends are fixing portions. One bent portion of the spring piece 3 is connected to the upper shell 1, and the other bent portion of the spring piece 3 is connected to the mass block 7. The spring piece 12 can also be a spring, and the present invention does not limit this.

[0055] In an embodiment of the present invention, the housing includes an upper shell 1 and a lower shell 13, and the stator assembly and the oscillator assembly are housed in the mounting cavity formed by the upper shell 1 and the lower shell 13; wherein the support assembly and the elastic assembly are both connected to the upper shell 1.

[0056] As can be seen from the above embodiments, the vibration device provided by the present invention adopts a different support 9 than the traditional one. The first coil 10 is wound on the coil frame 91, and the second coil 11 is directly assembled on the support 9, thereby overcoming the difficulty of winding the second coil 11 and making the coil assembly process easier to realize. In addition, the magnetic circuit system can be driven separately in different directions. The axis of the first coil is the first direction, and the axis of the second coil is the second direction. The first direction and the second direction are perpendicular to each other and form separate circuits. The first coil and the second coil are energized to drive the oscillator assembly to vibrate along the first direction and the second direction respectively, thereby making the vibration direction clearer.

[0057] The vibration device according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the vibration device proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. A vibration device, characterized by, The vibration device comprises: a housing, an installation cavity is formed in the interior of the housing; a vibrator assembly, the vibrator assembly is suspended in the installation cavity, and the vibrator assembly comprises a magnetic circuit system; a stator assembly, the stator assembly is arranged in the installation cavity and connected with the housing and located in the magnetic field of the magnetic circuit system, wherein the stator assembly comprises a support, a first coil wound on the support, and a second coil assembled on the support, the axial direction of the first coil is a first direction, the axial direction of the second coil is a second direction, the first direction is perpendicular to the second direction, the first coil and the second coil are respectively energized to drive the vibrator assembly to vibrate along the first direction and the second direction respectively; the support comprises a coil skeleton and two fixed parts arranged at both ends of the coil skeleton, the first coil is wound on the coil skeleton and located between the two fixed parts, the fixed part has a fixed groove for accommodating part of the second coil; an elastic assembly, the elastic assembly is used for elastically connecting the housing and the vibrator assembly.

2. The vibration device according to claim 1, wherein the fixed part comprises a fixed block, a fixed plate and a fixed piece, wherein the fixed block and the fixed plate are connected with the coil skeleton, the fixed plate is stacked with the fixed block along the second direction, and the fixed piece is connected with the fixed block and arranged in a spaced manner with the fixed plate to form the fixed groove.

3. The vibration device according to claim 2, wherein a length of the fixed block along a third direction perpendicular to the first direction and the second direction is greater than a length of the fixed plate along the third direction; and / or a thickness of the fixed block along the first direction is greater than a thickness of the fixed part along the first direction; and / or the fixed piece is connected with the fixed block on a side away from the coil skeleton, and a height of the fixed block along the second direction is less than a height of the fixed piece along the second direction.

4. The vibration device according to claim 2, wherein the fixed piece is connected with the fixed block on a side away from the coil skeleton, and the fixed block and the fixed piece connected with the end face of the housing are flush.

5. The vibration device according to claim 1, wherein the support is an integral structure made of a magnetic conductive material.

6. The vibration device according to claim 2, wherein the magnetic circuit system comprises two groups of magnet assemblies arranged in a spaced manner along a third direction perpendicular to the first direction and the second direction, and a magnetic conductive plate fixed to the magnet assemblies; wherein the stator assembly is located between the two groups of magnet assemblies and arranged in a spaced manner, and the magnetic conductive plate is located on a side of the magnet assemblies away from the stator assembly; the magnet assembly comprises at least two side magnets and a center magnet clamped between the side magnets, and the magnetic conductive plate is in a U-shaped form to wrap and fix each group of magnet assemblies, or the magnetic conductive plate is in a plate form, and the magnetic conductive plate is fixed to the side of the magnet assembly away from the stator assembly.

7. The vibration device according to claim 6, wherein The magnetizing directions of the center magnets of the two magnet assemblies are opposite and parallel to the third direction, the magnetizing directions of the opposite side magnets of the two magnet assemblies are the same along the third direction, the magnetizing directions of the two side magnets of each magnet assembly are opposite and parallel to the first direction, and the polarities of the center magnets of each magnet assembly toward the end faces of the stator assembly are the same as the polarities of the side magnets toward the center magnets.

8. The vibration device of claim 6, wherein, The vibrator assembly further comprises a mass block for accommodating the magnetic circuit system, and the mass block is connected to the shell through the elastic assembly.

9. The vibration device of claim 8, wherein, Along the first direction, the mass block and the elastic assembly are clamped with foam.

10. The vibration device of claim 8, wherein, The two sides of the mass block along the first direction are provided with stoppers between the mass block and the shell.

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