Vibration assembly and loudspeaker

Abstract

The embodiment of the invention discloses a vibration assembly and a loudspeaker. The vibration assembly comprises a yoke structure, a diaphragm, a main magnet and a voice coil. The yoke structure comprises a plurality of nested first magnetic conductive layers and is provided with a plurality of first through holes, the diaphragm is arranged at the top end of the yoke structure, the main magnet is arranged at the bottom of a cavity formed by the diaphragm and the yoke structure and forms an annular magnetic gap with the yoke structure, and the voice coil is arranged in the magnetic gap and is connected with the diaphragm. The yoke structure is formed by nesting the plurality of first magnetic conductive layers, the plurality of first through holes are formed, the multi-layer yoke structure is used for replacing the supporting and magnetic conductive effects of the original yoke, and the multi-hole arrangement is used for replacing the design that the original single vent hole is matched with the metal screen cloth, so that the heat dissipation effect is improved, the complex structure is omitted, and the working efficiency of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of audio equipment, and in particular to a vibration component and a loudspeaker. Background Art

[0002] In the vibration components of existing speakers, special vents are often opened on the yoke to adjust the internal pressure in order to achieve a better sound effect. In order to prevent water and dust from affecting internal sensitive components and to adjust and improve acoustic performance, nylon mesh is usually used to cover the vents to isolate the inner cavity from the outside. However, since the nylon mesh is soft, acoustic resonance is prone to occur when the area of ​​use is too large. Therefore, for vents with larger areas, metal mesh is used instead of nylon mesh to be applied to the vents. With the widespread use of speakers, the installation space of the vibration component has gradually shrunk, and the single ventilation design is difficult to achieve an improvement in the heat dissipation effect. At the same time, the operation of opening additional vents and applying mesh also makes the installation process more cumbersome. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a vibration component and a speaker to improve the heat dissipation effect, eliminate complex structures, and enhance product work efficiency.

[0004] In a first aspect, an embodiment of the present invention provides a vibration component, including:

[0005] A yoke structure, comprising a plurality of stacked first magnetic conductive layers, each of the first magnetic conductive layers comprising a bowl-shaped portion and a connecting portion, the connecting portion being arranged at the top of the bowl-shaped portion and extending laterally outward to form an annular edge, a plurality of first through holes being opened on the yoke structure, each of the first through holes penetrating the bowl-shaped portions of the plurality of first magnetic conductive layers;

[0006] A diaphragm is arranged at the top of the yoke structure, the edge of the diaphragm is connected to the connecting portion, and forms a cavity with the yoke structure;

[0007] A main magnet is disposed at the bottom of the cavity, and an annular magnetic gap is formed between the side of the main magnet and the yoke structure;

[0008] The voice coil is arranged in the annular magnetic gap, and the top end of the voice coil is connected to the diaphragm.

[0009] Optionally, the sizes of the plurality of first magnetic conductive layers increase sequentially from the inside to the outside, and the plurality of first through holes are arranged in a matrix form on the bowl-shaped portion.

[0010] Optionally, the yoke structure further includes a second magnetic conductive layer, which is a bowl-shaped structure and is overlapped and bonded to the outside of the bowl-shaped portion of the outermost first magnetic conductive layer, and the second magnetic conductive layer is provided with a plurality of second through holes corresponding to the plurality of first through holes.

[0011] Optionally, an avoidance groove is provided on the yoke structure, and the avoidance groove passes through the connecting parts of the plurality of first magnetic conductive layers and connects the outside of the yoke structure with the cavity.

[0012] Optionally, wires are connected to both sides of the voice coil, and the wires extend through the avoidance groove.

[0013] Optionally, the vibration assembly further includes a circuit board assembly, which is disposed at the outer bottom of the yoke structure and is electrically connected to the wire.

[0014] Optionally, the vibration assembly further includes a support structure, which is disposed on the outside of the yoke structure, with the top of the support structure extending into the avoidance groove and the bottom connected to the circuit board assembly, and a channel for accommodating the wire is opened inside the support structure.

[0015] Optionally, the main magnet includes a central magnet and a magnetic conductive sheet, and the magnetic conductive sheet is arranged on the top of the central magnet.

[0016] Optionally, the vibration component further includes an adhesive layer, and the diaphragm and the connecting portion are connected via the adhesive layer.

[0017] In a second aspect, an embodiment of the present invention provides a speaker including a vibration component.

[0018] An embodiment of the present invention provides a vibration component and a speaker, wherein the vibration component includes a yoke structure, a diaphragm, a main magnet and a voice coil. The yoke structure includes a plurality of stacked first magnetic conductive layers, and is provided with a plurality of first through holes, and the diaphragm is arranged at the top of the yoke structure. The main magnet is arranged at the bottom of the cavity formed by the diaphragm and the yoke structure, and forms an annular magnetic gap with the yoke structure. The voice coil is arranged in the magnetic gap and connected to the diaphragm. A plurality of first magnetic conductive layers are stacked to form a yoke structure, and a plurality of first through holes are provided. The support and magnetic conductive function of the original yoke are replaced by a multi-layer yoke structure, and the original single vent hole and metal mesh design are replaced by a porous setting, thereby improving the heat dissipation effect of the vibration component, eliminating the complex structure, and improving the work efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0020] Figure 1 is a top perspective view of a vibration assembly according to an embodiment of the present invention;

[0021] Figure 2 is a bottom perspective view of a vibration assembly according to an embodiment of the present invention;

[0022] Figure 3 is an exploded view of a vibration assembly according to an embodiment of the present invention;

[0023] Figure 4 is a cross-sectional view of a vibration assembly according to an embodiment of the present invention;

[0024] Figure 5 It is a partial enlarged view of the yoke structure of one embodiment of the present invention;

[0025] Figure 6 is a top perspective view of a vibration assembly without a diaphragm according to an embodiment of the present invention;

[0026] Figure 7 It is a top perspective view of a vibration assembly of one embodiment of the present invention with the diaphragm and the adhesive layer removed;

[0027] Figure 8 This is a three-dimensional diagram of a vibration component of an embodiment of the present invention after removing the diaphragm, adhesive layer and support structure.

[0028] Description of reference numerals:

[0029] 1-yoke structure; 11-first magnetic conductive layer; 111-bowl-shaped portion; 112-connecting portion; 12-first through hole; 13-avoidance groove; 14-second magnetic conductive layer; 15-second through hole; 2-diaphragm; 3-main magnet; 31-center magnet; 32-magnetic conductive sheet; 4-voice coil; 5-adhesive layer; 6-conducting wire; 7-circuit board assembly; 8-bracket structure; 81-channel. DETAILED DESCRIPTION

[0030] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0031] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0032] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] For ease of explanation, spatially relative terms such as "inside", "outside", "below", "below", "lower", "above", "upper", etc. are used herein to describe the relationship of one element or feature illustrated in the figures to another element or feature. It will be understood that spatially relative terms may be intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figure is turned over, an element described as being "below" or "below" other elements or features will then be positioned as being "above" the other elements or features. Thus, the example term "below" can include both the orientations of above and below. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0034] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0035] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0036] A loudspeaker is an electroacoustic transducer, which usually includes a vibration component mainly composed of a magnet, a coil and a diaphragm. The coil is connected to the diaphragm and is set within the magnetic field of the magnet. After the alternating current is passed through the coil, the moving charges are acted upon by the Lorentz force in the magnetic field, and the coil vibrates under the periodic Ampere force on the macroscopic coil, which further drives the diaphragm to vibrate. The vibration of the diaphragm compresses and vibrates the air, forming sound waves of the same frequency to emit sound, thus realizing the conversion of electrical signals into sound.

[0037] Reference Figure 1 , Figure 2-Figure 4The vibration assembly of the embodiment of the present invention includes a yoke structure 1, a diaphragm 2, a main magnet 3 and a voice coil 4. The yoke structure 1 is used to support the entire vibration assembly and allow ventilation inside and outside the vibration assembly to achieve heat dissipation and pressure regulation. At the same time, the yoke structure 1 cooperates with the main magnet 3 to form a closed magnetic circuit and shield the interference of the external magnetic field on the internal magnetic field. The diaphragm 2 is arranged at the top of the yoke structure 1, and its edge is connected to the yoke structure 1 and cooperates to form a cavity. The lower end of the diaphragm 2 is connected to the voice coil 4, and vibrates with the voice coil 4 to make a sound. The main magnet 3 is arranged at the bottom of the cavity, and an annular magnetic gap is formed between its side and the yoke structure 1. The voice coil 4 is arranged in the annular magnetic gap, and wires 6 are connected on both sides of it for passing current into the voice coil 4. After the power is turned on, the voice coil 4 vibrates in the magnetic gap, driving the diaphragm 2 to vibrate and make a sound.

[0038] Reference Figure 3-Figure 4 The yoke structure 1 includes a plurality of first magnetic conductive layers 11 stacked together. Since the thickness of each first magnetic conductive layer 11 is relatively thin, in order to improve the structural strength and magnetic field strength, it is necessary to stack multiple first magnetic conductive layers 11. According to the use scenario and installation space of the vibration component, the single-layer thickness and the number of stacked layers of the first magnetic conductive layer 11 can be adjusted to achieve the best product effect. Each first magnetic conductive layer 11 includes a bowl-shaped portion 111 and a connecting portion 112, and the connecting portion 112 is arranged at the top of the bowl-shaped portion 111 and extends laterally outward to form an annular edge. Among them, the bowl-shaped portion 111 is used to form a cavity and accommodate the internal structure of the vibration component, and the connecting portion 112 is used to contact and connect the yoke structure 1 with other structures. The first magnetic conductive layer 11 is made of soft magnetic materials, such as ferrite, silicon steel sheets and other materials. According to actual conditions, when forming the stacking of multiple first magnetic conductive layers 11, multiple layers of soft magnetic materials are stacked and stamped at one time to form a yoke structure 1 having a bowl-shaped portion 111 and a connecting portion 112. Since the overlapping structure is formed by stamping multiple layers of material at one time, the sizes of the multiple first magnetic conductive layers 11 increase from the inside to the outside, and the first magnetic conductive layer 11 of each layer fits tightly with the first magnetic conductive layer 11 adjacent to it without sliding. In other words, when the diaphragm 2 is connected to the connecting portion 112 of the topmost first magnetic conductive layer 11, the multiple first magnetic conductive layers 11 outside it will not fall off layer by layer due to loss of connection, but will be tightly fixed together. The multiple first magnetic conductive layers 11 are overlapped to form a yoke structure 1, which can replace the supporting and magnetic conductive functions of the yoke in the prior art. While meeting the required rigidity requirements and magnetic field strength requirements, the yoke structure 1 enables the vibration component to adapt to more usage scenarios, and can be flexibly adjusted according to different usage scenarios, such as changing the number of overlapping layers and thickness, to improve product adaptability.

[0039] Figure 4 is a cross-sectional view of a vibration component of an embodiment of the present invention, Figure 5 yes Figure 4 A partial enlarged view of the middle yoke iron structure A. Figure 3-Figure 5 , a plurality of first through holes 12 are provided on the yoke structure 1, and the plurality of first through holes 12 are arranged in a matrix form on the bowl-shaped portion 111, and each first through hole 12 passes through the bowl-shaped portion 111 of the plurality of first magnetic conductive layers 11. For each layer of the first magnetic conductive layer 11, a plurality of holes arranged in a matrix form are provided on its side. According to the actual situation, the holes can be opened before a single stamping, or after the stamping is completed. When the process of opening the holes before a single stamping is adopted, since the materials of different layers will be deformed during the stamping process, there will be deviations in the holes on each layer of the first magnetic conductive layer 11 after stamping. The through hole finally formed by superimposing the holes of multiple layers of the first magnetic conductive layer 11 is the first through hole 12, and at this time, the area of ​​the first through hole 12 is smaller than the area of ​​the hole opened before stamping. When the process of opening holes after stamping is adopted, since the shape of the yoke structure 1 has been formed, the holes on each layer of the first magnetic conductive layer 11 are connected, and the holes at the same position of each layer of the first magnetic conductive layer 11 together constitute a first through hole 12. At this time, the area of ​​the first through hole 12 is equal to the hole area of ​​the hole after stamping. The method of directly opening holes on the yoke structure 1 avoids the problem of single vent opening occupying the yoke space and reducing its local rigidity and magnetic field strength in the prior art, and can also achieve better heat dissipation effect, effectively eliminating the complex structure of opening a single vent and applying nylon mesh or metal mesh, and improving the work efficiency of the product. At the same time, the design of multi-layer superposition of the first magnetic conductive layer 11 of the yoke structure 1 can achieve the required magnetic field strength, so the opening of the first through hole 12 basically does not have a significant impact on the magnetic field strength of the yoke structure 1.

[0040] In some embodiments, reference Figure 3 The yoke structure 1 also includes a second magnetic conductive layer 14. The second magnetic conductive layer 14 is a bowl-shaped structure, which is overlapped and attached to the outside of the bowl-shaped portion 111 of the outermost first magnetic conductive layer 11. The top of the opening of the bowl-shaped structure of the second magnetic conductive layer 14 is not provided with an extended connection structure, but is in contact with the bottom surface of the connection portion 112 of the outermost first magnetic conductive layer 11. The second magnetic conductive layer 14 is provided with second through holes 15 corresponding to the plurality of first through holes 12. The first through holes 12 and the second through holes 15 are connected to realize the function of connecting the outside of the vibration component with the cavity. The structure inside the cavity can dissipate heat through the first through holes 12 and the second through holes 15, and adjust the air pressure, thereby improving the heat dissipation effect, eliminating complex structures, and improving the work efficiency of the product.

[0041] In some embodiments, a avoidance groove 13 is provided on the yoke structure 1. Figure 3-Figure 5 and Figure 7As shown. The avoidance groove 13 is used to allow the wire 6 and other components that need to pass through the yoke structure 1 to pass through the connection parts 112 of the multiple first magnetic conductive layers 11. According to actual conditions, since the multiple connection parts 112 extend laterally, overlap and fit, and have a certain thickness, the avoidance groove 13 can form an opening with a certain height. The avoidance groove 13 connects the outside of the yoke structure 1 with the cavity, and the wires 6 arranged on both sides of the voice coil 4 extend out through the avoidance groove 13, making the vibration component structure more compact, reducing space occupancy, and being able to better adapt to installation requirements in various situations.

[0042] In some embodiments, reference Figure 4 The main magnet 3 includes a central magnet 31 and a magnetic guide sheet 32. The magnetic guide sheet 32 ​​is arranged at the top of the central magnet 31 to help concentrate and guide the magnetic field and improve the performance of the vibration component. The main magnet 3 cooperates with the yoke structure 1 to form a closed magnetic circuit and shield external magnetic field interference, ensuring the concentration of the magnetic field in the vibration component, so that the vibration component can vibrate stably and meet the installation requirements in various situations.

[0043] In some embodiments, the vibration assembly further includes a circuit board assembly 7 and a support structure 8, such as Figure 1 , Figure 5 As shown. The circuit board assembly 7 is arranged at the bottom of the outer side of the yoke structure 1 and is electrically connected to the wire 6, and is used to provide an electrical signal to the voice coil 4, causing it to vibrate and drive the diaphragm 2 to vibrate, thereby driving the vibration assembly to work. The bracket structure 8 is arranged on the outer side of the yoke structure 1, and is used to provide external support for the yoke structure 1. According to actual conditions, the bracket structure 8 can select a longitudinal support structure or other support structure, and multiple structures can be set, which are symmetrically installed on the outside of the yoke structure 1 or installed in a circumferential direction. The top of the bracket structure 8 extends into the avoidance groove 13, and the bottom is connected to the circuit board assembly 7. A channel 81 for accommodating the wire 6 is opened inside the bracket structure 8, so that the routing of the wire 6 outside the yoke structure 1 is protected.

[0044] In some embodiments, reference Figure 6-Figure 8 The vibration assembly also includes an adhesive layer 5, which is arranged between the edge of the diaphragm 2 and the connecting portion 112, and is used to connect the diaphragm 2 and the connecting portion 112. According to actual conditions, the adhesive layer 5 can be set as a closed annular structure. For a portion of the connecting portion 112 with an avoidance groove 13, the upper end surface of the adhesive layer 5 is connected to the diaphragm 2, and the lower end surface is in contact with the top surface of the support structure 8, and a portion of the wire 6 can be accommodated to pass through, so that the wire 6, the support structure 8, the yoke structure 1 and the edge of the diaphragm 2 can be fixed, thereby increasing the structural strength and ensuring the stability of the vibration assembly.

[0045] Reference Figure 1The speaker of the embodiment of the present invention includes the vibration component described above. According to the actual situation and product requirements, other structures can be added to the outside of the vibration component to form a complete speaker and improve the sound quality through conventional processes. For example, an external box is added to provide better protection and support for the vibration component and improve the sound output characteristics; an external operation panel is connected to facilitate user operation and adjustment of the sound effect; damping materials are coated to reduce reflections and standing waves during the sound generation process and improve the sound quality.

[0046] The embodiments of the present application provide a vibration component and a loudspeaker, wherein the vibration component includes a yoke structure, a diaphragm, a main magnet, and a voice coil. The yoke structure includes a plurality of stacked first magnetic conductive layers, and is provided with a plurality of first through holes. The diaphragm is arranged at the top of the yoke structure, the main magnet is arranged at the bottom of the cavity formed by the diaphragm and the yoke structure, and forms an annular magnetic gap with the yoke structure, and the voice coil is arranged in the magnetic gap and connected to the diaphragm. The yoke structure is formed by stacking a plurality of first magnetic conductive layers, and a plurality of first through holes are provided. The support and magnetic conductive function of the original yoke are replaced by a multi-layer yoke structure, and the original single vent hole combined with the metal mesh design is replaced by a multi-porous setting, thereby improving the heat dissipation effect, eliminating the complex structure, and improving the work efficiency of the product.

[0047] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vibration component, characterized in that: The vibration assembly comprises: A yoke structure (1) comprises a plurality of stacked first magnetic conductive layers (11), each of the first magnetic conductive layers (11) comprising a bowl-shaped portion (111) and a connecting portion (112), the connecting portion (112) being arranged at the top of the bowl-shaped portion (111) and extending laterally outward to form an annular edge, the yoke structure (1) being provided with a plurality of first through holes (12), each of the first through holes (12) penetrating the bowl-shaped portions (111) of the plurality of first magnetic conductive layers (11); A diaphragm (2) is arranged at the top end of the yoke structure (1), the edge of the diaphragm (2) is connected to the connecting portion (112), and forms a cavity with the yoke structure (1); A main magnet (3) is arranged at the bottom of the cavity, and an annular magnetic gap is formed between the side surface of the main magnet (3) and the yoke structure (1); A voice coil (4) is arranged in the annular magnetic gap, and the top end of the voice coil (4) is connected to the diaphragm (2).

2. The vibration assembly according to claim 1, characterized in that The sizes of the plurality of first magnetic conductive layers (11) increase sequentially from the inside to the outside, and the plurality of first through holes (12) are arranged in a matrix form on the bowl-shaped portion (111).

3. The vibration assembly according to claim 1, characterized in that The yoke structure (1) further comprises a second magnetic conductive layer (14), the second magnetic conductive layer (14) being a bowl-shaped structure, being arranged in a stacked manner on the outside of the bowl-shaped portion (111) of the outermost first magnetic conductive layer (11), and the second magnetic conductive layer (14) being provided with a plurality of second through holes (15) corresponding to the plurality of first through holes (12).

4. The vibration assembly according to claim 1, characterized in that The yoke structure (1) is provided with an avoidance groove (13), the avoidance groove (13) penetrates the connection parts (112) of the plurality of first magnetic conductive layers (11) and connects the outside of the yoke structure (1) with the cavity.

5. The vibration assembly according to claim 4, characterized in that: Wires (6) are connected to both sides of the voice coil (4), and the wires (6) extend through the avoidance groove (13).

6. The vibration assembly according to claim 5, characterized in that The vibration component also includes a circuit board component (7), which is arranged at the outer bottom of the yoke structure (1) and is electrically connected to the wire (6).

7. The vibration assembly according to claim 6, characterized in that The vibration component also includes a support structure (8), the support structure (8) is arranged on the outside of the yoke structure (1), the top of the support structure (8) extends into the avoidance groove (13), the bottom is connected to the circuit board assembly (7), and a channel (81) for accommodating the wire (6) is opened inside the support structure (8).

8. The vibration assembly according to claim 1, characterized in that The main magnet (3) comprises a central magnet (31) and a magnetic conductive sheet (32), wherein the magnetic conductive sheet (32) is arranged on the top of the central magnet (31).

9. The vibration assembly according to claim 1, characterized in that The vibration component further comprises an adhesive layer (5), and the diaphragm (2) and the connecting portion (112) are connected via the adhesive layer (5).

10. A loudspeaker, characterized in that: The speaker comprises a vibration assembly as claimed in any one of claims 1-9.

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