Vibration exciter and electronic device

Abstract

The utility model belongs to exciter technical field discloses a kind of vibration exciter and electronic equipment, and vibration exciter includes shell, magnetic circuit system, magnetically conductive component and coil. Shell includes first shell body, second shell body and the first cantilever structure connected between first shell body and second shell body, and first cantilever structure can be elastically deformed magnetic circuit system is located in shell, and is connected with shell;Magnetic conductive component is located in shell, and magnetically conductive component includes integrally formed first magnetic conductive sheet and second cantilever structure, first magnetic conductive sheet is connected to magnetic circuit system, second cantilever structure can be elastically deformed, and first magnetic conductive sheet is connected to shell by second cantilever structure;Coil is located in shell, and is connected with second shell body, and magnetic circuit system can vibrate relative to coil. The utility model provides vibration exciter and electronic equipment with stronger anti-falling, anti-collision ability, and higher reliability.

Description

Technical Field

[0001] This utility model relates to the field of exciter technology, and in particular to a vibration exciter and electronic device. Background Technology

[0002] Electronic devices such as mobile phones, tablets, and handheld multimedia entertainment devices often use exciters to achieve system feedback, such as vibration feedback in mobile phones and game consoles.

[0003] In existing technologies, electronic devices typically generate sound by vibrating a screen or casing to avoid openings in the structure. The vibration source for this screen or casing is the exciter. The exciter includes a casing and a magnetic circuit system, a magnetic conductive plate, and a coil, all housed within the casing. The coil, when energized, generates a magnetic field. The magnetic circuit system converts electrical energy into mechanical energy using electromagnetic induction. The magnetic circuit system and the magnetic conductive plate are connected to the casing. When an electronic device with the exciter installed falls, the casing directly transmits the impact force to the magnetic circuit system and the magnetic conductive plate, causing damage to these components and resulting in a weak impact resistance for the exciter.

[0004] Therefore, there is an urgent need for a vibration exciter and electronic device with strong drop resistance. Utility Model Content

[0005] The purpose of this invention is to provide a vibration exciter and electronic device to solve the problem of weak impact resistance in the prior art.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] Vibration exciter, including:

[0008] The outer shell includes a first shell, a second shell, and a first cantilever structure connecting the first shell and the second shell, wherein the first cantilever structure is capable of elastic deformation;

[0009] A magnetic circuit system is disposed within the outer casing and connected to the first casing;

[0010] A magnetic conductive assembly is disposed within the housing, and the magnetic conductive assembly includes an integrally formed first magnetic conductive sheet and a second cantilever structure. The first magnetic conductive sheet is connected to the magnetic circuit system, the second cantilever structure is capable of elastic deformation, and the first magnetic conductive sheet is connected to the housing through the second cantilever structure.

[0011] A coil is disposed within the housing and connected to the second housing, and the magnetic circuit system is capable of vibrating relative to the coil.

[0012] In one embodiment, the second cantilever structure includes a first annular portion and a plurality of first connectors, the plurality of first connectors being spaced apart circumferentially along the first magnetic sheet, one end of the first connector being connected to the first magnetic sheet, the other end of the first connector being connected to the first annular portion, the first connector being capable of elastic deformation, and the first annular portion being connected to the outer shell.

[0013] In one embodiment, the second cantilever structure includes a plurality of first connectors, which are spaced apart circumferentially along the first magnetic sheet. One end of each first connector is connected to the first magnetic sheet, and the other end of each first connector is connected to the outer shell. The first connectors are capable of elastic deformation.

[0014] In one embodiment, the first connector includes at least two first connecting portions that are connected end to end, and the two connected first connecting portions are arranged at an obtuse angle.

[0015] In one embodiment, the first housing and the first cantilever structure are an integral structure; the second cantilever structure is connected to at least one of the second housing, the first cantilever structure and the second housing.

[0016] In one embodiment, the first cantilever structure includes a second annular portion and a plurality of second connecting members, the plurality of second connecting members being spaced apart circumferentially along the first housing, one end of each second connecting member being connected to the first housing, the other end of each second connecting member being connected to the second annular portion, and the second connecting member being capable of elastic deformation, the second annular portion being connected to the second housing; or,

[0017] The first cantilever structure includes a plurality of second connectors, which are spaced apart circumferentially along the first housing. One end of each second connector is connected to the first housing, and the other end of each second connector is connected to the second housing. The second connectors are capable of elastic deformation.

[0018] In one embodiment, the magnetic conductive assembly further includes a second magnetic conductive sheet, which is disposed in the same layer as the first magnetic conductive sheet and spaced apart, and the coil passes through the space between the first magnetic conductive sheet and the second magnetic conductive sheet;

[0019] The magnetic circuit system includes a main magnet and a secondary magnet disposed in the same layer as the main magnet. Both the main magnet and the secondary magnet are connected to the first housing, and a magnetic gap is formed between the main magnet and the secondary magnet. At least a portion of the coil extends into the magnetic gap.

[0020] The first magnetic sheet is connected to the auxiliary magnet, and the second magnetic sheet is connected to the main magnet.

[0021] In one embodiment, multiple auxiliary magnets are arranged at circumferential intervals along the main magnet, the first magnetic conductive sheet is annular, and the multiple auxiliary magnets are all connected to the first magnetic conductive sheet.

[0022] In one embodiment, the vibration exciter further includes a buffer layer; the buffer layer is provided between the magnetic conductive assembly and the housing.

[0023] An electronic device, including the vibration exciter as described above, further including a device body, wherein the housing of the vibration exciter is connected to the device body.

[0024] The vibration exciter and electronic device provided by this utility model have at least the following beneficial effects:

[0025] The magnetic conductive assembly includes an integrally formed first magnetic conductive sheet and a second cantilever structure. Compared to a separate structure, the integral first magnetic conductive sheet and second cantilever structure have higher overall structural strength. The first magnetic conductive sheet can be elastically connected to the outer shell through the second cantilever structure. When the vibration exciter collides, the impact force on the outer shell is transmitted to the first magnetic conductive sheet through the second cantilever structure. The energy absorption of the second cantilever structure reduces the force transmitted to the first magnetic conductive sheet, thereby reducing the force transmitted from the first magnetic conductive sheet to the magnetic circuit system, thus reducing the probability of damage to the first magnetic conductive sheet and the magnetic circuit system. After the impact force on the outer shell is directly transmitted to the magnetic circuit system, the magnetic circuit system transmits the force to the first magnetic conductive sheet, and the first magnetic conductive sheet then transmits the force to the second cantilever structure. The energy absorption of the second cantilever structure also reduces the impact force on the magnetic circuit system and the first magnetic conductive sheet, further reducing the risk of damage to the first magnetic conductive sheet and the magnetic circuit system. Therefore, the vibration exciter has high drop and impact resistance, meeting the requirements of drop tests. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0027] Figure 1 This is a first structural schematic diagram of the vibration exciter provided in this embodiment of the utility model;

[0028] Figure 2 This is a schematic diagram of the second structure of the vibration exciter provided in this embodiment of the present invention;

[0029] Figure 3 This is an exploded view of the vibration exciter provided in an embodiment of the present invention;

[0030] Figure 4 This is a first cross-sectional view of the vibration exciter provided in this embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the first magnetic conductive sheet and the first cantilever structure provided in this embodiment of the utility model;

[0032] Figure 6 This is a schematic diagram of the first housing and the second cantilever structure provided in an embodiment of the present utility model;

[0033] Figure 7 This is a second cross-sectional view of the vibration exciter provided in this embodiment of the present invention.

[0034] In the picture:

[0035] 100, Outer shell; 110, First housing; 120, First cantilever structure; 121, Second annular portion; 122, Second connector; 1221, Second connecting portion; 130, Second housing; 200, Magnetic circuit system; 210, Main magnet; 220, Secondary magnet; 300, Magnetic conductive assembly; 310, First magnetic conductive sheet; 320, Second cantilever structure; 321, First annular portion; 322, First connector; 3221, First connecting portion; 330, Second magnetic conductive sheet; 340, Through hole; 400, Coil; 500, Buffer layer; X, First direction. Detailed Implementation

[0036] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0040] In the description of this embodiment, 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," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0041] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0042] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0043] This embodiment provides a vibration exciter with strong resistance to drops and collisions, and high reliability.

[0044] For example, such as Figures 1 to 7As shown, the vibration exciter includes a housing 100 and a magnetic circuit system 200, a magnetic conductive component 300, and a coil 400, all disposed within the housing 100. The housing 100 has an inner cavity (not shown in the figure), within which the magnetic circuit system 200, the magnetic conductive component 300, and the coil 400 are all disposed. The housing 100 in this embodiment can be made of metal or non-metal, and this embodiment does not limit this. The shape of the housing 100 in this embodiment can be determined according to actual application. For example, the housing 100 can be square, cylindrical, frustum-shaped, etc. The accompanying drawings of this embodiment provide a square housing 100. For ease of understanding, in this embodiment, the thickness direction of the housing 100 is referred to as the first direction X, and the length and width directions of the housing 100 are perpendicular to the first direction X.

[0045] Exemplarily, the outer casing 100 includes a first casing 110, a first cantilever structure 120, and a second casing 130. The first cantilever structure 120 connects the first casing 110 and the second casing 130. In this embodiment, the first cantilever structure 120 is capable of elastic deformation, and the first casing 110 is connected to the second casing 130 via the first cantilever structure 120. Thus, if either the first casing 110 or the second casing 130 is subjected to an impact force, the impact force can be transmitted to the first cantilever structure 120, where it is buffered and attracted, thereby reducing the impact force transmitted from the first casing 110 and the second casing 130 to the magnetic circuit system 200 and the first magnetic conductive sheet 310, further reducing the impact force on the magnetic circuit system 200 and the first magnetic conductive sheet 310.

[0046] In some alternative embodiments, the magnetic circuit system 200 is connected to the first housing 110 such that when the magnetic circuit system 200 vibrates, it can drive the first housing 110 to vibrate, thereby generating vibration feedback in the electronic device.

[0047] like Figure 3As shown, the magnetic conductive assembly 300 includes an integrally formed first magnetic conductive sheet 310 and a second cantilever structure 320. That is, the first magnetic conductive sheet 310 and the second cantilever structure 320 are a single unit made of the same material. The first magnetic conductive sheet 310 is connected to the magnetic circuit system 200. The second cantilever structure 320 is elastically deformable, and the first magnetic conductive sheet 310 is connected to the outer shell 100 via the second cantilever structure 320. By setting the second cantilever structure 320, the first magnetic conductive sheet 310 can be elastically connected to the outer shell 100. When the vibration exciter collides, the impact force on the outer shell 100 is transmitted to the magnetic circuit system 200 and the first magnetic conductive sheet 310, and the second cantilever structure 320 buffers and absorbs the energy, thereby reducing the impact force on the magnetic circuit system 200 and the first magnetic conductive sheet 310. This reduces the risk of damage to the magnetic circuit system 200 and the first magnetic conductive sheet 310, making the vibration exciter more resistant to drop tests, roller tests, and other strength tests. Optionally, the first magnetic sheet 310 and the second cantilever structure 320 can be made of low-carbon steel SPCC, cold-rolled steel SPCG or other magnetic materials.

[0048] In this embodiment, the coil 400 is connected to the second housing 130. The magnetic circuit system 200 can vibrate relative to the coil 400; for example, the magnetic circuit system 200 can vibrate relative to the coil 400 along a first direction X. It should be noted that when the coil 400 is energized, it generates an induced magnetic field. Under the influence of the induced magnetic field, the magnetic circuit system 200 can vibrate relative to the coil 400. When the magnetic circuit system 200 vibrates, it can drive the first housing 110 of the outer casing 100 to vibrate. The first housing 110 of the outer casing 100 is connected to the device body of the electronic device, thereby driving the device body to vibrate and realizing vibration feedback of the electronic device.

[0049] The vibration exciter provided in this embodiment includes a magnetic conductive assembly 300 comprising an integrally formed first magnetic conductive sheet 310 and a second cantilever structure 320. Compared to a split structure, the integral structure of the first magnetic conductive sheet 310 and the second cantilever structure 320 has higher overall structural strength. The first magnetic conductive sheet 310 can be elastically connected to the outer shell 100 through the second cantilever structure 320. When the vibration exciter collides, the impact force on the outer shell 100 is transmitted to the first magnetic conductive sheet 310 through the second cantilever structure 320. The energy absorption of the second cantilever structure 320 reduces the force transmitted to the first magnetic conductive sheet 310, thereby reducing the force transmitted from the first magnetic conductive sheet 310 to the magnetic circuit system 200. This reduces the probability of damage to the first magnetic conductive sheet 310 and the magnetic circuit system 200. Therefore, the vibration exciter has high drop resistance and impact resistance, meeting the drop test requirements.

[0050] After the impact force received by the outer shell 100 is directly transmitted to the magnetic circuit system 200, the magnetic circuit system 200 transmits the force to the first magnetic conductive sheet 310, and the first magnetic conductive sheet 310 then transmits the force to the second cantilever structure 320. The second cantilever structure 320 buffers and absorbs energy, which can also reduce the impact force received by the magnetic circuit system 200 and the first magnetic conductive sheet 310, and reduce the risk of damage to the first magnetic conductive sheet 310 and the magnetic circuit system 200.

[0051] Furthermore, the integrated design of the first magnetic sheet 310 and the second cantilever structure 320 can reduce other parts and simplify the assembly process, thereby reducing material costs, improving the yield of the vibration exciter, and greatly reducing the overall cost of the vibration exciter.

[0052] Optionally, the second cantilever structure 320 can have various specific structures. This embodiment provides the following two types of second cantilever structures 320.

[0053] In one possible implementation of the second cantilever structure 320, such as Figure 5 As shown, the second cantilever structure 320 includes a first annular portion 321 and a plurality of first connectors 322. The plurality of first connectors 322 are spaced apart circumferentially along the first magnetic sheet 310. One end of each first connector 322 is connected to the first magnetic sheet 310, and the other end of each first connector 322 is connected to the first annular portion 321. Furthermore, the first connectors 322 are capable of elastic deformation. The first annular portion 321 is connected to the outer casing 100. For example, the first annular portion 321 is connected to the second housing 130 and / or the first cantilever structure 120.

[0054] It should be noted that the first connector 322 can elastically deform in the first direction X and also in a direction perpendicular to the first direction X, so as to buffer forces from different directions and have a high buffering capacity. In this embodiment, multiple first connectors 322 are all arranged in the same layer as the first magnetic sheet 310, and the first annular portion 321 is also arranged in the same layer as the first magnetic sheet 310. That is, the top surface (or bottom surface) of multiple first connectors 322, the top surface (or bottom surface) of the first magnetic sheet 310, and the top surface (or bottom surface) of the first annular portion 321 are coplanar, so that while ensuring the buffering performance, the magnetic component 300 occupies less space in the first direction X, which is conducive to the thinning of the vibration exciter.

[0055] For example, such as Figure 5 As shown, a through hole 340 is formed between two adjacent first connectors 322 in the circumferential direction of the first magnetic sheet 310, the first magnetic sheet 310, and the first annular portion 321. The through hole 340 provides movement space for the first connectors 322 to ensure the buffering performance and suction performance of the second cantilever structure 320.

[0056] The specific structure of the first connector 322 can be varied; this embodiment provides one type of first connector 322. For example... Figure 5 As shown, the first connector 322 includes at least two first connecting portions 3221 connected end-to-end, with the two connected first connecting portions 3221 arranged at an obtuse angle. Thus, by providing multiple first connecting portions 3221, the length of the first connector 322 can be relatively long, resulting in a larger deformation range in the first direction X, further improving the buffering performance of the second cantilever structure 320, thereby enhancing the impact resistance of the vibration exciter. Furthermore, the obtuse angle arrangement of the two connected first connecting portions 3221 ensures that the dimension of the first connector 322 in the direction perpendicular to the first direction X is not excessive, allowing for a smaller length and width of the vibration exciter, which is beneficial for miniaturization.

[0057] To further increase the number of first connectors 322 between the first magnetic sheet 310 and the first annular portion 321, for example, such as Figure 5 As shown, the connection position between the first connector 322 and the first magnetic sheet 310 is the first connection position, and the connection position between the first connector 322 and the first annular portion 321 is the second connection position. The first connection position and the second connection position are staggered in a direction perpendicular to the first direction X. That is, the first connection position and the second connection position corresponding to one first connector 322 are not opposite each other in the length or width direction of the outer casing 100. In this way, while ensuring that the length of the first connector 322 is relatively long, multiple first connectors 322 can be fitted together, so that multiple first connectors 322 can be provided in a small space, and the arrangement of multiple first connectors 322 can be relatively regular.

[0058] In another possible embodiment of the second cantilever structure 320, the second cantilever structure 320 may omit the first annular portion 321. Specifically, the second cantilever structure 320 includes a plurality of first connectors 322. The plurality of first connectors 322 are spaced apart circumferentially along the first magnetic sheet 310. One end of each first connector 322 is connected to the first magnetic sheet 310, and the other end of each first connector 322 is connected to the outer casing 100. Furthermore, the first connectors 322 are capable of elastic deformation. Thus, the elastic deformation of the first connectors 322 enables the second cantilever structure 320 to achieve both buffering and suction performance. It should be noted that the specific structure of the first connectors 322 can vary. For example, the first connector 322 may include at least two first connecting portions 3221 connected end-to-end, with the two connected first connecting portions 3221 arranged at an obtuse angle, allowing the first connector 322 to be relatively long. In this embodiment, the other end of the first connector 322 is connected to the second housing 130 and / or the first cantilever structure 120 of the housing 100.

[0059] In one possible implementation, such as Figure 3 As shown, the first housing 110 and the first cantilever structure 120 are an integral structure, that is, the first housing 110 and the first cantilever structure 120 are integrally formed, which allows the number of components included in the outer shell 100 to be smaller, making it easier to assemble the outer shell 100. In addition, the integral first housing 110 and the first cantilever structure 120 can also have a high degree of integrity.

[0060] In some alternative embodiments, the second cantilever structure 320 is connected to at least one of the second housing 130, the first cantilever structure 120, and the second housing 130. For example, as... Figure 4 As shown, the first annular portion 321 of the second cantilever structure 320 is sandwiched between the second housing 130 and the first cantilever structure 120 to have a higher connection strength and improve the overall integrity of the housing 100.

[0061] It should be noted that the second housing 130 can be made of non-ferromagnetic stainless steel, copper, or other non-magnetic alloys. The first housing 110 and the first cantilever structure 120 can both be made of stainless steel such as SUS304 or SUS430F. The first housing 110 and the first cantilever structure 120 may or may not be magnetic.

[0062] Similar to the second cantilever structure 320, the first cantilever structure 120 can also be implemented in various ways.

[0063] In one embodiment of the first cantilever structure 120, the first cantilever structure 120 includes a second annular portion 121 and a plurality of second connecting members 122. The plurality of second connecting members 122 are arranged circumferentially spaced along the first housing 110. One end of the second connecting member 122 is connected to the first housing 110, and the other end of the second connecting member 122 is connected to the second annular portion 121. The second connecting member 122 is capable of elastic deformation. The second annular portion 121 is connected to the second housing 130.

[0064] It should be noted that the second connector 122 can undergo elastic deformation in the first direction X, and can also undergo elastic deformation in a direction perpendicular to the first direction X, so as to buffer forces from different directions and have a high buffering capacity.

[0065] The second connector 122 can have various specific structures; this embodiment provides one type of second connector 122. For example... Figure 6 As shown, the second connector 122 includes at least two second connecting portions 1221 connected end-to-end, with the two connected second connecting portions 1221 arranged at an obtuse angle. Thus, by providing multiple second connecting portions 1221, the length of the second connector 122 can be relatively long, resulting in a larger deformation range in the first direction X, further improving the buffering performance of the first cantilever structure 120, thereby enhancing the impact resistance of the housing 100 and the vibration exciter. Furthermore, the obtuse angle arrangement of the two connected second connecting portions 1221 ensures that the dimension of the second connector 122 in the direction perpendicular to the first direction X is not excessive, allowing for a smaller length and width of the housing 100, which is beneficial for the miniaturization of the vibration exciter.

[0066] To further increase the number of second connectors 122 between the first magnetic sheet 310 and the first annular portion 321, for example, such as Figure 6 As shown, the connection position between the second connector 122 and the first housing 110 is the third connection position, and the connection position between the second connector 122 and the second annular portion 121 is the fourth connection position. The third and fourth connection positions are staggered in a direction perpendicular to the first direction X. That is, the third and fourth connection positions corresponding to one second connector 122 are not opposite each other in the length or width direction of the housing 100. In this way, while ensuring that the length of the second connector 122 is relatively long, multiple second connectors 122 can be fitted together, so that multiple second connectors 122 can be provided in a small space, and the arrangement of multiple second connectors 122 can be relatively regular.

[0067] In another possible embodiment of the first cantilever structure 120, the first cantilever structure 120 may not include the second annular portion 121, but may include a plurality of second connectors 122. The plurality of second connectors 122 are arranged circumferentially around the first housing 110. One end of the second connector 122 is connected to the first housing 110, and the other end of the second connector 122 is connected to the second housing 130. The second connector 122 is capable of elastic deformation.

[0068] In some optional embodiments, the first cantilever structure 120 and the second cantilever structure 320 are arranged opposite each other in the first direction X, so that the vibration exciter is configured as a double-layer cantilever structure. In this way, the rotational stiffness of the vibration exciter can be increased, thereby suppressing the swaying problem of the vibration exciter, and further reducing the magnetic gap of the magnetic circuit system 200, improving the reliability and vibration performance of the vibration exciter.

[0069] In this embodiment, when the outer casing 100 includes a first casing 110 and a second casing 130, such as Figure 4 As shown, one surface of the magnetic circuit system 200 in the first direction X is connected to the first housing 110, and the other surface of the magnetic circuit system 200 in the first direction X is connected to the first magnetic sheet 310. The first magnetic sheet 310 and the second housing 130 are spaced apart.

[0070] To increase the magnetic induction intensity of the vibration exciter, in one possible implementation, such as Figure 3 As shown, the magnetically conductive assembly 300 further includes a second magnetically conductive sheet 330. The second magnetically conductive sheet 330 is disposed on the same layer as the first magnetically conductive sheet 310 and spaced apart. For example, the first magnetically conductive sheet 310 may be annular, and the second magnetically conductive sheet 330 is disposed at the center of the first magnetically conductive sheet 310, with a gap between them. Figure 4 As shown, the coil 400 is arranged through the gap between the first magnetic sheet 310 and the second magnetic sheet 330 to facilitate interaction with the magnetic circuit system 200.

[0071] In this embodiment, the component that cooperates with the magnetic conductive component 300 is, for example... Figure 3 As shown, the magnetic circuit system 200 includes a main magnet 210 and a secondary magnet 220 disposed on the same layer as the main magnet 210 and spaced apart from it. That is, a magnetic gap is formed between the main magnet 210 and the secondary magnet 220. Both the main magnet 210 and the secondary magnet 220 are connected to the first housing 110. A first magnetic conductive sheet 310 is connected to the secondary magnet 220, and a second magnetic conductive sheet 330 is connected to the main magnet 210. Furthermore, as... Figure 4 As shown, at least a portion of the coil 400 extends into the magnetic gap to better interact with the main magnet 210 and the auxiliary magnet 220, thereby ensuring the magnetic induction intensity.

[0072] It should be noted that, as Figure 4As shown, there is a gap between the coil 400 and the first magnetic sheet 310 and the second magnetic sheet 330, and there is a gap between the coil 400 and the main magnet 210 and the auxiliary magnet 220, so as to reduce the risk of the first magnetic sheet 310, the second magnetic sheet 330, the main magnet 210 and the auxiliary magnet 220 colliding with the coil 400 when the vibration exciter is impacted in a direction perpendicular to the first direction X, thus having high reliability.

[0073] In some alternative embodiments, please continue to refer to Figure 3 Multiple auxiliary magnets 220 are arranged at intervals along the circumference of the main magnet 210, and the first magnetic conductive sheet 310 is ring-shaped, with each auxiliary magnet 220 connected to the first magnetic conductive sheet 310. By providing multiple auxiliary magnets 220, the number of magnetic components in the vibration exciter can be increased, further enhancing the magnetic induction intensity.

[0074] To further improve the impact resistance of the vibration exciter, such as Figure 3 and Figure 4 As shown, the vibration exciter also includes a buffer layer 500, which has the function of energy absorption and buffering.

[0075] Exemplarily, a buffer layer 500 is provided between the magnetic conductive assembly 300 and the housing 100 to buffer the impact force transmitted from the housing 100 to the magnetic conductive assembly 300, preventing the vibration exciter from directly impacting the housing 100 during a drop, reducing the risk of damage to the magnetic conductive assembly 300, and also preventing dents in the housing 100 that would affect the appearance of the vibration exciter. The buffer layer 500 can be made of an elastic material. Exemplarily, the buffer layer 500 can include one or more layers. For example, the buffer layer 500 includes a buffer material layer and an anti-stick layer, wherein the buffer material layer can be made of PSA (pressure-sensitive double-sided adhesive), and the anti-stick layer can be made of PET (thermoplastic polyester). The buffer material layer mainly serves a buffering function, and the anti-stick layer is used to prevent the buffer layer 500 from sticking.

[0076] In one possible implementation, a buffer layer 500 is provided between the first magnetic sheet 310 and / or the second magnetic sheet 330 and the second housing 130 of the outer casing 100 to improve the buffering and energy absorption effect of the first magnetic sheet 310 and the second magnetic sheet 330. It is understood that a buffer layer 500 may or may not be provided between the second cantilever structure 320 and the second housing 130; this embodiment does not limit this. When a buffer layer 500 is provided between the second cantilever structure 320 and the second housing 130, the buffer layer 500 is located between the first annular portion 321 of the second cantilever structure 320 and the second housing 130 to avoid the buffer layer 500 affecting the elastic deformation of the first connecting member 322 and to ensure the buffering performance of the second cantilever structure 320.

[0077] The positional relationship between the buffer layer 500, the magnetic conductive component 300, and the housing 100 can include the following three cases.

[0078] In one embodiment, such as Figure 4 As shown, the buffer layer 500 is connected to the inner wall of the housing 100 and is spaced apart from the magnetic conductive assembly 300. Thus, the buffer layer 500 serves both to cushion the magnetic conductive assembly 300 from impacting the housing 100 and to provide some space for the magnetic conductive assembly 300 to move in the first direction X. Furthermore, since the buffer layer 500 is not located on the magnetic conductive assembly 300, the weight of the magnetic conductive assembly 300 is not excessive, ensuring the low-frequency response of the vibration exciter.

[0079] In another embodiment, the buffer layer 500 is connected to the magnetically conductive assembly 300 and spaced apart from the housing 100.

[0080] In another embodiment, such as Figure 7 As shown, the buffer layer 500 is elastic, and the buffer layer 500 is in contact with the inner wall of the outer shell 100 and the magnetic conductive assembly 300. By providing an elastic buffer layer 500, the buffer layer 500 will not interfere with the movement of the magnetic conductive assembly 300 in the first direction X, thus ensuring the generation and transmission of vibration.

[0081] When the vibration exciter provided in this embodiment is used, taking the connection between the first housing 110 and the device body of the electronic device as an example, the coil 400 generates an alternating magnetic field after being energized. Under the action of the magnetic field, the magnetic circuit system 200 and the magnetic conductive component 300 vibrate relative to the coil 400, and drive the first housing 110 to vibrate. The first housing 110 drives the device body of the electronic device to vibrate, so as to realize vibration feedback.

[0082] The vibration exciter provided in this embodiment integrates the second cantilever structure 320 with the first magnetic sheet 310, and the first cantilever structure 120 with the first housing 110. Both the first housing 110 and the first cantilever structure 120 can be metal structures. Compared to a separate structure, the overall structural strength is stronger and more resistant to drop tests, roller tests, and other strength tests. The integrated cantilever structure reduces other components, simplifies the assembly process of the vibration exciter, thus reducing material costs, improving product yield, and significantly reducing the overall product cost. In this embodiment, a buffer layer 500 is attached to the inner side of the second housing 130, greatly improving safety against drop impacts. It should also be emphasized that this embodiment uses an integrated double-layer cantilever structure to increase the rotational rigidity of the vibration exciter, thereby suppressing the swaying problem of the vibration exciter, reducing the magnetic gap, and improving the reliability and vibration performance of the vibration exciter.

[0083] This embodiment also provides an electronic device, including the vibration exciter as described above. The electronic device further includes a device body, and the housing 100 of the vibration exciter is connected to the device body. Exemplarily, the second housing 130 or the first housing 110 of the housing 100 is connected to the device body. The electronic device provided in this embodiment has high drop resistance, extending the service life of the electronic device.

[0084] For example, the electronic device can be a smart device such as a mobile phone, tablet computer, or handheld multimedia entertainment device, and this embodiment does not limit it.

[0085] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A vibration exciter, characterized in that, include: The outer shell (100) includes a first shell (110), a second shell (130) and a first cantilever structure (120) connected between the first shell (110) and the second shell (130), wherein the first cantilever structure (120) is capable of elastic deformation; A magnetic circuit system (200) is disposed within the housing (100) and connected to the first housing (110); A magnetic conductive assembly (300) is disposed within the housing (100), and the magnetic conductive assembly (300) includes an integrally formed first magnetic conductive sheet (310) and a second cantilever structure (320). The first magnetic conductive sheet (310) is connected to the magnetic circuit system (200), the second cantilever structure (320) is capable of elastic deformation, and the first magnetic conductive sheet (310) is connected to the housing (100) through the second cantilever structure (320). A coil (400) is disposed inside the housing (100) and connected to the second housing (130), and the magnetic circuit system (200) is capable of vibrating relative to the coil (400).

2. The vibration exciter according to claim 1, characterized in that, The second cantilever structure (320) includes a first annular portion (321) and a plurality of first connectors (322). The plurality of first connectors (322) are arranged at intervals along the circumference of the first magnetic sheet (310). One end of the first connector (322) is connected to the first magnetic sheet (310), and the other end of the first connector (322) is connected to the first annular portion (321). The first connector (322) can undergo elastic deformation. The first annular portion (321) is connected to the outer shell (100).

3. The vibration exciter according to claim 1, characterized in that, The second cantilever structure (320) includes a plurality of first connectors (322), which are spaced apart circumferentially along the first magnetic sheet (310). One end of each first connector (322) is connected to the first magnetic sheet (310), and the other end is connected to the outer shell (100). The first connector (322) is capable of elastic deformation.

4. The vibration exciter according to claim 2 or 3, characterized in that, The first connector (322) includes at least two first connecting parts (3221) that are connected end to end, and the two first connecting parts (3221) that are connected are arranged at an obtuse angle.

5. The vibration exciter according to claim 1, characterized in that, The first housing (110) and the first cantilever structure (120) are an integral structure; the second cantilever structure (320) is connected to at least one of the second housing (130), the first cantilever structure (120) and the second housing (130).

6. The vibration exciter according to claim 5, characterized in that, The first cantilever structure (120) includes a second annular portion (121) and a plurality of second connectors (122). The plurality of second connectors (122) are arranged circumferentially around the first housing (110). One end of the second connector (122) is connected to the first housing (110), and the other end of the second connector (122) is connected to the second annular portion (121). The second connector (122) can undergo elastic deformation. The second annular portion (121) is connected to the second housing (130).

7. The vibration exciter according to claim 1, characterized in that, The magnetic conductive assembly (300) further includes a second magnetic conductive sheet (330), which is on the same layer as the first magnetic conductive sheet (310) and spaced apart. The coil (400) passes through the space between the first magnetic conductive sheet (310) and the second magnetic conductive sheet (330). The magnetic circuit system (200) includes a main magnet (210) and a secondary magnet (220) disposed in the same layer as the main magnet (210). The main magnet (210) and the secondary magnet (220) are both connected to the first housing (110), and a magnetic gap is formed between the main magnet (210) and the secondary magnet (220). At least a portion of the coil (400) extends into the magnetic gap. The first magnetic sheet (310) is connected to the auxiliary magnet (220), and the second magnetic sheet (330) is connected to the main magnet (210).

8. The vibration exciter according to claim 7, characterized in that, Multiple auxiliary magnets (220) are arranged at intervals along the circumference of the main magnet (210). The first magnetic conductive sheet (310) is ring-shaped, and the multiple auxiliary magnets (220) are all connected to the first magnetic conductive sheet (310).

9. The vibration exciter according to claim 1, characterized in that, The vibration exciter further includes a buffer layer (500); the buffer layer (500) is provided between the magnetic conductive assembly (300) and the housing (100).

10. An electronic device, characterized in that, The electronic device includes a vibration exciter as described in any one of claims 1-9, and further includes a device body to which the housing (100) of the vibration exciter is connected.

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