A vibration device, bone conduction earphone, wearable device and smart hardware device

Abstract

This invention discloses a vibration device, bone conduction headphones, wearable devices, and smart hardware devices, belonging to the field of vibration technology. The vibration device includes: a housing; an electromagnetic drive component including a coil connected to the housing; and an oscillator including a magnetic component movably disposed within the coil and an elastic component connecting the magnetic component and the housing. The magnetic component includes at least two magnet portions and a non-magnetic portion located between two adjacent magnet portions. In this invention, the magnetic component is integrally magnetized using magnetic material. Compared to the original structure requiring multiple connected magnets, it has fewer parts, is easier to install, and achieves higher dimensional accuracy, thereby improving the assembly accuracy with the coil and reducing the risk of contact or collision between the magnetic component and the coil during vibration, resulting in higher reliability.

Description

Technical Field

[0001] This invention relates to the field of vibration technology, and more particularly to a vibration device, bone conduction headphones, wearable devices, and smart hardware devices. Background Technology

[0002] Vibration devices, such as bone conduction sound-generating devices for vibration and linear vibration motors for providing vibration feedback, typically include a housing and an oscillator, coil, and spring, all housed within the housing. The coil drives the oscillator to vibrate, and the spring connects the oscillator and the housing to drive the oscillator to reset.

[0003] Currently, vibration devices have the following drawbacks: First, in order to improve the magnetic force of the oscillator, the oscillator is designed to include multiple magnets, with adjacent magnets separated by a magnetic conductor. This structure increases the number of parts, making assembly more difficult and resulting in poor assembly precision. The oscillator is also prone to contacting the coil during vibration, affecting the reliability of the vibration device. Second, existing vibration devices typically only have a spring at one end of the oscillator, which makes the vibration device less stable during vibration. It is prone to swaying left and right in the length direction, resulting in rolling vibration. This causes the vibration system to exhibit nonlinear vibration, and the oscillator touching other parts causes noise. For bone conduction sound devices, this can easily lead to increased sound distortion.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a vibration device, bone conduction headphones, wearable devices, and smart hardware devices, which are easier to assemble and whose assembly accuracy is more easily guaranteed.

[0006] To achieve the above-mentioned objectives, in a first aspect, the present invention provides a vibration device, comprising:

[0007] case;

[0008] An electromagnetic drive unit, including a coil connected to the housing; and

[0009] The oscillator includes a magnetic component movably disposed within the housing and an elastic component connecting the magnetic component and the housing, wherein the coil is wrapped around the outside of the magnetic component;

[0010] The magnetic component includes at least two magnetic portions and a non-magnetic portion located between two adjacent magnetic portions.

[0011] Furthermore, the coil is disposed corresponding to the non-magnetic portion, and the thickness of the coil is the same as the thickness of the non-magnetic portion; or,

[0012] The thickness of the coil is greater than the thickness of the non-magnetic part, and both ends of the coil extend to the outer periphery of the two magnet parts adjacent to the non-magnetic part.

[0013] Furthermore, the magnetic poles of the magnet portion and the non-magnetic portion are arranged along the axis of the magnetic element, and the polarities of adjacent magnetic poles of two adjacent magnet portions are the same.

[0014] Furthermore, the gap between the magnetic component and the coil is 0.05 to 0.6 mm.

[0015] Furthermore, the thickness of the non-magnetic portion is 0.3 mm or more.

[0016] Furthermore, there are two elastic elements, which are respectively connected to both ends of the magnetic element.

[0017] Furthermore, the elastic member includes a first mounting portion, a second mounting portion surrounding the outer periphery of the first mounting portion, and an arm portion connecting the first mounting portion and the second mounting portion, wherein the first mounting portion is connected to the magnetic member, and the second mounting portion is connected to the housing.

[0018] Furthermore, the magnetic component is connected to the first mounting portion, and the outer peripheral surface of the magnetic component does not extend beyond the outer peripheral surface of the first mounting portion; or,

[0019] A spacer plate is connected between the magnetic component and the first mounting part, and the outer peripheral surface of the spacer plate does not extend beyond the outer peripheral surface of the first mounting part.

[0020] Furthermore, the vibration device also includes a first cover and a second cover connected to both ends of the housing, and both the first cover and the second cover have clearance cavities that allow the arm and the first mounting portion to pass through during the movement of the vibrator.

[0021] Furthermore, the coil is disposed inside the cavity of the housing or connected to the outside of the housing.

[0022] In a second aspect, the present invention also provides a bone conduction headphone, comprising the vibration device as described in any of the preceding claims.

[0023] Thirdly, the present invention also proposes a wearable device including the vibration device as described in any of the preceding claims.

[0024] Fourthly, the present invention also proposes an intelligent hardware device, including the vibration device as described in any of the preceding claims.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In this invention, the magnetic component is integrally magnetized using magnetic material. Compared to the original structure that requires multiple magnets to be connected, it has fewer parts, is easier to install, and can achieve higher dimensional accuracy. This improves the assembly accuracy with the coil, reduces the risk of contact and collision between the magnetic component and the coil during vibration, and increases reliability.

[0027] 2. Due to the high dimensional accuracy of the magnetic components, the gap between them and the coil can be set smaller, thereby increasing the driving force of the coil on the magnetic components and making the vibration device more sensitive.

[0028] 3. In this invention, elastic elements are provided at both ends of the magnetic component, which makes the force on both ends of the magnetic component more symmetrical, and the vibration device can perform linear vibration more stably, making it less prone to rolling vibration. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of one embodiment of the vibration device in this invention, in which the coil is located inside the housing.

[0030] Figure 2 yes Figure 1 An exploded view of the vibration device shown.

[0031] Figure 3 This is a schematic diagram of one embodiment of the vibration device in this invention, in which the coil is located outside the housing.

[0032] Figure 4 This is a schematic diagram of a magnetic component connected to a coil in this invention. The magnetic component in the diagram has a non-magnetic area.

[0033] Figure 5 This is a schematic diagram of a magnetic component connected to a coil in this invention. The magnetic component has two non-magnetic regions.

[0034] Figure 6 This is a schematic diagram of one embodiment of the magnetic component of the present invention, in which the magnetic part and the non-magnetic part of the magnetic component are not symmetrical with respect to the first symmetry plane.

[0035] Figure 7 This is a schematic diagram of one magnetization method for the magnetic component in this invention.

[0036] Figure 8 yes Figure 7 A schematic diagram of a magnetic component obtained by the magnetization method described above.

[0037] Figure 9 This is a schematic diagram of the elastic element in this invention.

[0038] Figure 10 This is a schematic diagram of one embodiment of the vibration device in this invention.

[0039] Figure 11 yes Figure 10 An exploded view of the vibration device shown. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0041] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] A vibration device corresponding to a preferred embodiment of the present invention includes a housing 1, an electromagnetic drive member connected to the housing 1, and an oscillator that vibrates under the drive of the electromagnetic drive member. The type of vibration device is not limited; for example, it may be... Figure 1 , Figure 2 , Figure 10 and Figure 11 The bone conduction sound generating device shown can also be Figure 3 The vibration motor shown.

[0044] The shell 1 includes a ring-shaped body 10. The shape of the body 10 is not limited; for example, its cross-sectional shape can be annular, rectangular, or racetrack-shaped. Figure 2The diagram shows the body 10 in a racetrack shape. An inner cavity 12 is formed within the body 10, and the oscillator is installed within the inner cavity 12. The electromagnetic drive includes a coil 20, which can be installed inside or outside the inner cavity 12. The oscillator includes a magnetic element 30 passing through the coil 20 and at least one elastic element connecting the magnetic element 30 and the body 10 of the housing 1. Current is passed through the coil 20 to drive the oscillator to vibrate. Specifically, after the coil 20 is energized, it generates an electromagnetic field. By controlling parameters such as the direction and magnitude of the current within the coil 20, the polarity and strength of the electromagnetic field can be changed, thereby driving the magnetic element 30 to vibrate. The elastic element can drive the magnetic element 30 to reset, thus causing the magnetic element 30 to reciprocate under the drive of the coil 20. The electromagnetic drive may also include a control circuit board electrically connected to the coil 20 to control the current within the coil 20.

[0045] In a preferred embodiment, such as Figure 1 As shown, the coil 20 is disposed inside the housing 1, and the magnetic component 30 passes through the coil 20. Its shape is adapted to the inner hole shape of the coil 20 and is coaxially arranged with the coil 20, allowing it to move along the axis of the coil 20. In this embodiment, the housing 1 also includes a fixing member 11 connected to the body 10. The fixing member 11 protrudes from the body 10 into the inner cavity 12, and the coil 20 is mounted on the fixing member 11. The mounting methods between the two include, but are not limited to, bonding, welding, and bolting.

[0046] The shape of the fixing member 11 is not limited. In this embodiment, its shape is consistent with that of the body 10, and it is also ring-shaped (specifically, racetrack-shaped). Preferably, the fixing member 11 is a complete ring to increase its contact area with the electromagnetic drive component, making the support of the fixing member 11 for the electromagnetic drive component more stable. In other embodiments, the fixing member 11 can also be a discontinuous ring with several notches, etc. The fixing member 11 can be integrally formed with the body 10, or it can be an independent component connected to the body 10.

[0047] Furthermore, in order to make the position of the coil 20 on the fixing member 11 more accurate, a positioning groove 110 is also provided on the fixing member 11. The shape of the positioning groove 110 is adapted to the shape of the coil 20 so that the coil 20 can be accurately positioned in the positioning groove 110, thereby improving the installation accuracy of the coil 20 in the inner cavity 12.

[0048] In another preferred embodiment, such as Figure 3As shown, the coil 20 can also be disposed outside the housing 1. In this embodiment, an annular groove 15 is provided on the outer surface of the housing 1, and the coil 20 is disposed in the annular groove 15 and limited by the annular groove 15. When there are multiple coils 20, there can also be multiple annular grooves 15, and two adjacent annular grooves 15 can be separated by an annular boss 16. In this embodiment, the magnetic component 30 and the coil 20 are separated by the wall portion 17 of the housing 1, and the dimensional accuracy of the housing 1 is higher. Therefore, the assembly accuracy between the magnetic component 30 and the wall portion 17 is easier to control.

[0049] like Figure 4 As shown, in this invention, the magnetic component 30 is integrally magnetized from a magnetic material, such as ferrite, neodymium iron boron, AlNiCo, and Samarium Cobalt. The magnetic component 30 includes at least two magnetic portions 300 and a non-magnetic portion 301 located between adjacent magnetic portions 300. It is understood that the magnetic portions 300 and the non-magnetic portions 301 are part of the magnetic component 30, not separate components. Each magnetic portion 300 includes two magnetic poles, an N pole and a S pole, and the polarities of the two adjacent magnetic poles of two adjacent magnetic portions 300 are the same. This allows the magnetic field lines to be concentrated approximately perpendicularly through the coil 20, generating a greater driving force after the coil 20 is energized, thus improving the driving force and sensitivity of the vibration device. Multiple magnetic portions 300 are arranged along the axis of the magnetic component 30, and the non-magnetic portions 301 separate adjacent magnetic portions 300. That is, the magnetic poles of the magnetic portions 300 and the non-magnetic portions 301 are arranged along the axis of the magnetic component 30.

[0050] The magnetic component 30 includes at least one non-magnetic portion 301 and two magnetic portions 300. Of course, its number is not limited to this; for example, such as... Figure 5 As shown, it can have two non-magnetic portions 301 and three magnetic portions 300, and the same applies to cases with more non-magnetic portions 301. In the case of multiple non-magnetic portions 301, the thickness of the multiple non-magnetic portions 301 can be the same or different. As a preferred embodiment, the thickness of the non-magnetic portion 301 is 0.3 mm or more, and its maximum value is less than the minimum thickness of any single magnetic portion 300. If the thickness of the non-magnetic portion 301 is too small, the boundary between the magnetic portion 300 and the non-magnetic portion 301 will be unclear, affecting the performance of the magnetic component 30; if it is too large, the magnetic portion 300 will become correspondingly smaller, affecting the magnetic flux and the B value.

[0051] The cross-sectional shape of the magnetic component 30 is not limited; for example, its cross-sectional shape can be triangular, circular, rectangular, etc. The magnetic portion 300 and the non-magnetic portion 301 formed on the magnetic component 30 can be symmetrical or asymmetrical with respect to the geometric symmetry plane 302 of the magnetic component 30. Figure 6 This illustrates a case of asymmetry.

[0052] The magnetic component 30 can be formed using the following magnetization method. For ease of description, the magnetic component 30 that needs to be magnetized is referred to as the component to be magnetized 30a. After being magnetized, the component to be magnetized 30a becomes the magnetic component 30. The magnetic component 30 that needs to be magnetized can be, for example, a non-magnetic blank or a magnetic component 30 that needs to be remagnetized after its magnetism has weakened. Figure 7 As shown, the component to be magnetized 30a (the object shown by the dotted line in the figure) is inserted into the magnetic sleeve 6 and the polyurethane sleeve 60. The position of the polyurethane sleeve 60 corresponds to the position that needs to be magnetized, i.e., the magnet part 300. The magnetic sleeve 6 is placed at the position that does not need to be magnetized, i.e., it is fitted onto the position corresponding to the non-magnetic part 301. The polyurethane sleeve 60 can extend beyond the end of the component to be magnetized 30a, and a magnetic block 63 can be provided at the end of the polyurethane sleeve 60 to seal it, thereby enhancing the magnetization effect. Then, the component to be magnetized 30a is placed between several coils. In the figure, two sets of coils are shown respectively set at corresponding positions of two polyurethane sleeves 60, namely the first coil group 61 and the second coil group 62. The first coil group 61 and the second coil group 62 each include one or more magnetizing coils. The current direction of the magnetizing coils in each coil group is the same. The polarity of the magnetized part 300 can be changed by changing the current direction. For example, when the current directions of the first coil group 61 and the second coil group 62 are opposite, the first coil group 61 and the second coil group 62 generate magnetic fields with opposite magnetic field lines. The magnetic fields generated by the magnetizing coils are opposite in direction, and the polarities of the two adjacent magnetized parts 31 formed by their magnetization are also opposite. The magnetic sleeve 6 is made of a high magnetic permeability material such as silicon steel sheet, which can lead out and guide the magnetic field lines of the electromagnetic field generated by the coil group, thereby forming a region that shields the magnetic field inside. The polyurethane sleeve 60 allows the magnetic field lines to pass through. Therefore, the part to be magnetized 30a is only magnetized at the position corresponding to the polyurethane sleeve 60, forming the magnetized part 300, while the position corresponding to the magnetic sleeve 6 is not magnetized, forming the non-magnetic part 301. Finally, the part to be magnetized 30a forms as shown in the figure. Figure 8 As shown in the magnetic component 30, it is obvious that the polarity of the magnet part 300 can be changed by changing the direction of the current in the coil.

[0053] Obviously, since the magnetic component 30 is a single magnetized part, it has higher dimensional accuracy compared to using multiple connected magnets. This further improves the assembly accuracy of the magnetic component 30 within the coil 20, making it less likely for the magnetic component 30 to contact or collide with the coil 20 during vibration, ensuring reliable and stable operation, and avoiding magnetic circuit loss due to assembly errors. Moreover, when multiple magnets are connected, they need to be connected so that the like poles of two magnets are close together. Due to the presence of repulsive forces, the connection is very difficult, further reducing the dimensional accuracy after connection. However, using magnetization to manufacture the magnetic component 30 is more convenient to process, reducing component and labor costs during assembly and improving production efficiency.

[0054] Furthermore, the transition between the magnet portions 300 and the non-magnetic portions 301 on the magnetic component 30 is very smooth, resulting in a relatively complete sinusoidal distribution of the surface magnetic field of the magnetic component 30.

[0055] As mentioned above, the magnetic component 30, manufactured by magnetization, has better dimensional accuracy. Therefore, the gap between it and the inner wall of the coil 20 can be smaller. For example, the gap between the inner wall of the coil 20 and the outer wall of the magnetic component 30 is set to 0.05–0.6 mm. Generally, the smaller the gap between the coil 20 and the magnetic component 30, the greater the driving force of the coil 20 on the magnetic component 30, and the greater the sensitivity of the vibration device. However, the smaller the gap, the easier it is for the magnetic component 30 to collide with the coil 20 during movement. Therefore, more preferably, the gap is set to 0.15–0.3 mm to ensure a low risk of collision between the magnetic component 30 and the coil 20 while ensuring sufficient driving force from the coil 20 on the magnetic component 30.

[0056] like Figure 4 As shown, the position of coil 20 corresponds to that of non-magnetic portion 301, that is, coil 20 is arranged around the outer periphery of non-magnetic portion 301. The number of coils 20 is not limited to one; specifically, its number may be the same as or less than the number of non-magnetic portions 301, such as... Figure 5 As shown, Figure 5 The magnetic component 30 shown includes three magnetic portions 300 and two non-magnetic portions 301. Correspondingly, there are also two coils 20, which are disposed on the outer periphery of the two non-magnetic portions 301.

[0057] The thickness H of the coil 20 can be the same as or greater than the thickness D of the non-magnetic portion 301. Preferably, the thickness H of the coil 20 is greater than the thickness D of the non-magnetic portion 301. In this way, the magnetic lines of force emanating from the non-magnetic portion 301 can pass through the coil 20, thereby generating the maximum possible Lorentz force for driving, making the response of the magnetic component 30 more sensitive. Preferably, the coil 20 is symmetrically arranged on the non-magnetic portion 301, and the area B of the two magnetic portions 300 it covers is the same, so as to improve the symmetry.

[0058] like Figure 1 and Figure 3 As shown, in this embodiment, there are two elastic elements, namely a first elastic element 4 and a second elastic element 40, which are respectively disposed at both ends of the magnetic element 30. As a preferred embodiment, as... Figure 9As shown, the elastic element is sheet-shaped to save space. The elastic element includes a first mounting portion 400 located in the center, a second mounting portion 401 surrounding the outer periphery of the first mounting portion 400, and a plurality of arm portions 402 connecting the first mounting portion 400 and the second mounting portion 401. The first mounting portion 400 is used to connect to the end of the magnetic element 30, for example, by adhesive bonding; the second mounting portion 401 is used to connect to the housing 1, also for example, by adhesive bonding; the arm portions 402 are used to elastically deform when the magnetic element 30 vibrates, thereby causing the first mounting portion 400 to move together with the magnetic element 30, and the arm portions 402 simultaneously provide a spring force to drive the magnetic element 30 back to its original position.

[0059] Because the magnetic component 30 has elastic elements at both ends, the force at both ends is more balanced during vibration, making the vibration of the vibrating device more stable. It can reliably vibrate linearly along the axial direction without rolling vibration, resulting in better stability and greater restoring force.

[0060] It is understandable that the dimensions of the first elastic member 4 and the second elastic member 40 may be the same or different. For example, they may have different thicknesses, and the areas of the first mounting portion 400 and the second mounting portion 401 of the two elastic members may also be different.

[0061] In a preferred embodiment, reference Figure 1 The end face of the magnetic component 30 is directly connected to the first mounting portion 400. The area of ​​the magnetic component 30 is less than or equal to the area of ​​the first mounting portion 400, so that its outer peripheral surface does not exceed the outer peripheral surface of the first mounting portion 400. In this way, the magnetic component 30 does not have a portion that contacts the arm portion 402, allowing the arm portion 402 to undergo more smooth and sufficient elastic deformation, thereby improving the low-frequency sound quality of the vibration device. Preferably, the outer contour shape of the magnetic component 30 and the first mounting portion 400 are exactly the same, and the two are arranged coaxially. In another preferred embodiment, refer to... Figure 10 and Figure 11 A spacer plate 5 is provided between the magnetic component 30 and the first mounting portion 400. The outer peripheral surface of the spacer plate 5 does not extend beyond the outer peripheral surface of the first mounting portion 400. In this way, the elastic deformation of the arm portion 402 is not affected. Moreover, the spacer plate 5 reduces the size restriction on the magnetic component 30, and the outer peripheral surface of the magnetic component 30 can extend beyond the outer peripheral surface of the first mounting portion 400 without affecting the elastic deformation of the arm portion 402.

[0062] Obviously, the magnetic component 30 may not have a spacer 5, may have a spacer 5 at only one end, or may have a spacer 5 at both ends. When a spacer 5 is provided at both ends, the two spacers 5 may have the same or different dimensions.

[0063] like Figure 1 , Figure 3 and Figure 10 As shown, the vibration device also includes a first cover 13 and a second cover 14 connected to both ends of the main body 10. The first cover 13 and the second cover 14 respectively seal the two open ends of the main body 10 to prevent dust and other foreign objects from entering the interior of the housing 1, thereby protecting the internal electromagnetic drive components and oscillators. Both the first cover 13 and the second cover 14 have clearance cavities 130 at positions corresponding to the arm 402 and the first mounting portion 400, to allow clearance during the movement of the arm 402 and the first mounting portion 400.

[0064] The first cover 13 and the second cover 14 are not necessary and can be set as appropriate. For example, the first cover 13 and the second cover 14 can be omitted, or only one cover can be set at one end of the housing 1, or covers can be set at both ends of the housing 1.

[0065] The present invention also proposes a bone conduction headphone, which includes the vibration device described above, and is capable of generating sound through vibration via the vibration device described above.

[0066] The present invention also proposes a wearable device, which includes the vibration device described above. The wearable device may be, for example, a bone conduction headphone, bone conduction glasses, or VR glasses. The device vibrates to produce sound or generates vibration feedback, thereby improving the user experience and comfort.

[0067] The present invention also proposes a smart hardware device, which includes the vibration device described above. The smart hardware device may be, for example, a gaming peripheral, a smart fitness device, a smart TV, etc., which emits sound through the vibration device described above so that the user can hear the sound, or generates vibration feedback through the vibration device described above to improve the user experience and comfort.

[0068] The vibration device of the present invention has at least the following advantages:

[0069] 1. In this invention, the magnetic component is integrally magnetized using magnetic material. Compared to the original structure that requires multiple magnets to be connected, it has fewer parts, is easier to install, and can achieve higher dimensional accuracy. This improves the assembly accuracy with the coil, reduces the risk of contact and collision between the magnetic component and the coil during vibration, and increases reliability.

[0070] 2. Due to the high dimensional accuracy of the magnetic components, the gap between them and the coil can be set smaller, thereby increasing the driving force of the coil on the magnetic components and making the vibration device more sensitive.

[0071] 3. In this invention, elastic elements are provided at both ends of the magnetic component, which makes the force on both ends of the magnetic component more symmetrical, and the vibration device can perform linear vibration more stably, making it less prone to rolling vibration.

[0072] The above is only one specific embodiment of the present invention, and any improvements made based on the concept of the present invention shall be considered within the scope of protection of the present invention.

Claims

1. A vibration device, characterized in that, include: Shell (1); The electromagnetic drive includes a coil (20) connected to the housing (1). as well as The oscillator includes a magnetic element (30) movably disposed within the housing (1) and an elastic element connecting the magnetic element (30) and the housing (1), with the coil (20) surrounding the outside of the magnetic element (30); The magnetic component (30) includes at least two magnetic portions (300) and a non-magnetic portion (301) located between two adjacent magnetic portions (300). The magnetic poles of the magnetic portions (300) and the non-magnetic portion (301) are arranged along the axis of the magnetic component (30), and the polarities of two adjacent magnetic poles of two adjacent magnetic portions (300) are the same. The magnet part (300) and the non-magnetic part (301) are part of the magnetic component (30) rather than separate components; The magnetic component (30) is integrally magnetized from magnetic material. During magnetization, the component to be magnetized is inserted into the magnetic sleeve (6) and the polyurethane sleeve (60). The position of the polyurethane sleeve (60) corresponds to the magnet part (300), and the magnetic sleeve (6) is fitted on the position corresponding to the non-magnetic part (301). Only the position of the component to be magnetized corresponding to the polyurethane sleeve (60) is magnetized to form the magnet part (300), while the position corresponding to the magnetic sleeve (6) is not magnetized to form the non-magnetic part (301). Finally, the component to be magnetized forms the magnetic component (30).

2. The vibration device as described in claim 1, characterized in that, The coil (20) is disposed corresponding to the non-magnetic part (301), and the thickness of the coil (20) is the same as the thickness of the non-magnetic part (301); or, The thickness of the coil (20) is greater than the thickness of the non-magnetic part (301), and both ends of the coil (20) extend to the outer periphery of the two magnet parts (300) adjacent to the non-magnetic part (301).

3. The vibration device as described in claim 1, characterized in that, The gap between the magnetic component (30) and the coil (20) is 0.05~0.6mm.

4. The vibration device as described in claim 1, characterized in that, The thickness of the non-magnetic part (301) is 0.3 mm or more.

5. The vibration device according to any one of claims 1 to 4, characterized in that, The number of elastic elements is two, and the two elastic elements are respectively connected to the two ends of the magnetic element (30).

6. The vibration device as described in claim 5, characterized in that, The elastic member includes a first mounting portion (400), a second mounting portion (401) surrounding the outer periphery of the first mounting portion (400), and an arm portion (402) connecting the first mounting portion (400) and the second mounting portion (401), wherein the first mounting portion (400) is connected to the magnetic member (30), and the second mounting portion (401) is connected to the housing (1).

7. The vibration device as described in claim 6, characterized in that, The magnetic component (30) is connected to the first mounting portion (400), and the outer peripheral surface of the magnetic component (30) does not extend beyond the outer peripheral surface of the first mounting portion (400); or, A spacer plate (5) is connected between the magnetic component (30) and the first mounting part (400), and the outer peripheral surface of the spacer plate (5) does not extend beyond the outer peripheral surface of the first mounting part (400).

8. The vibration device as described in claim 6, characterized in that, It also includes a first cover (13) and a second cover (14) connected to both ends of the housing (1). Both the first cover (13) and the second cover (14) have a clearance cavity (130) to avoid the arm (402) and the first mounting part (400) during the movement of the vibrator.

9. The vibration device according to any one of claims 1 to 4, characterized in that, The coil (20) is located inside the cavity (12) of the housing (1) or connected to the outside of the housing (1).

10. A bone conduction headphone, characterized in that, Includes the vibration device as described in any one of claims 1 to 9.

11. A wearable device, characterized in that, Includes the vibration device as described in any one of claims 1 to 9.

12. A smart hardware device, characterized in that, Includes the vibration device as described in any one of claims 1 to 9.

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