Loudspeaker

Abstract

The utility model belongs to the technical field of loudspeakers, and discloses a loudspeaker, which comprises a bearing frame, a voice diaphragm and a voice coil. The bearing frame is provided with a containing cavity and an installation opening, the containing cavity is communicated with the outside through the installation opening, one end, provided with the installation opening, of the bearing frame is provided with a first heat dissipation layer, the voice diaphragm covers the installation opening and is provided with a second heat dissipation layer, the second heat dissipation layer abuts against the first heat dissipation layer, and the voice coil is connected to the second heat dissipation layer and extends into the containing cavity. The voice coil and the inner wall of the accommodating cavity are arranged at an interval. Through the arrangement, the loudspeaker can improve the heat dissipation effect and the heat dissipation efficiency of the loudspeaker.

Description

Technical Field

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

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals. For heat sinks, heat dissipation is an important parameter for evaluating loudspeaker performance.

[0003] Currently, most loudspeakers use exposed magnets or heat sinks for heat dissipation. This means that the magnets or heat sinks are used to circulate air with the outside air to dissipate heat from the loudspeaker. However, this method only dissipates heat from the exposed parts of the loudspeaker and cannot guarantee that the internal components of the loudspeaker can dissipate heat in time, resulting in generally poor heat dissipation effect and efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a loudspeaker that can improve its heat dissipation effect and efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A loudspeaker comprising:

[0007] The support frame is provided with a receiving cavity and an installation port. The receiving cavity is connected to the outside through the installation port. The end of the support frame with the installation port is provided with a first heat dissipation layer.

[0008] A diaphragm is provided to cover the mounting opening and a second heat dissipation layer is provided, the second heat dissipation layer abutting against the first heat dissipation layer;

[0009] A voice coil is connected to the second heat dissipation layer and extends into the accommodating cavity, with the voice coil spaced apart from the inner wall of the accommodating cavity.

[0010] Optionally, the loudspeaker further includes a magnetic circuit assembly connected to the support frame, and the voice coil is disposed in the magnetic gap formed by the magnetic circuit assembly.

[0011] Optionally, the magnetic circuit assembly includes a yoke plate and a main magnetic component. The yoke plate is connected to the support frame and forms a heat dissipation hole between it and the support frame. The accommodating cavity is connected to the outside through the heat dissipation hole, and the main magnetic component is connected to the yoke plate.

[0012] Optionally, multiple main magnetic components are provided, and heat dissipation channels are provided between the main magnetic components, which are connected to the heat dissipation holes.

[0013] Optionally, the magnetic circuit assembly further includes a secondary magnet connected to the yoke plate, and the voice coil is disposed between the primary magnet and the secondary magnet.

[0014] Optionally, multiple auxiliary magnetic components are provided, multiple heat dissipation ports are provided on the support frame, the accommodating cavity is connected to the outside through the heat dissipation ports, and multiple auxiliary magnetic components are correspondingly installed in the multiple heat dissipation ports.

[0015] Optionally, the magnetic circuit assembly further includes a magnetic guide plate disposed on the main magnetic component and / or the auxiliary magnetic component.

[0016] Optionally, the yoke plate is provided with a third heat dissipation layer.

[0017] Optionally, the second heat dissipation layer is provided and arranged in a ring;

[0018] Alternatively, multiple second heat dissipation layers may be provided, with the multiple second heat dissipation layers arranged sequentially at intervals along the circumference of the voice coil.

[0019] Optionally, the diaphragm has a pleated portion, and the pleated portion has a second heat dissipation layer.

[0020] The beneficial effects of this utility model are:

[0021] This utility model provides a loudspeaker, comprising a support frame, a diaphragm, and a voice coil. The support frame has a receiving cavity and a mounting port. The receiving cavity is connected to the outside through the mounting port, which not only facilitates loudspeaker assembly but also provides space for heat dissipation of the components inside the receiving cavity. A first heat dissipation layer is provided at the end of the support frame with the mounting port. The diaphragm covers the mounting port, allowing the heat generated by the diaphragm's vibration to be transferred to the outside through the first heat dissipation layer, thereby improving heat dissipation effect and efficiency. The diaphragm has a second heat dissipation layer, which abuts against the first heat dissipation layer, further improving heat dissipation efficiency. The voice coil is connected to the second heat dissipation layer, ensuring that the heat generated by the voice coil during operation can be quickly dissipated through the second heat dissipation layer. By extending the voice coil into the receiving cavity and spaced apart from the inner wall of the receiving cavity, sufficient heat dissipation space is ensured between the voice coil and the support frame, while avoiding direct contact between the voice coil and the inner wall of the receiving cavity, thus improving the stability and durability of the loudspeaker. Through the above configuration, the loudspeaker of this application can improve its heat dissipation effect and efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the loudspeaker provided in an embodiment of the present invention;

[0023] Figure 2 This is an isometric view of the loudspeaker provided in an embodiment of this utility model;

[0024] Figure 3 This is a cross-sectional view of the loudspeaker provided in an embodiment of the present invention;

[0025] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0026] Figure 5 This is a first exploded view of the loudspeaker provided in this embodiment of the present invention;

[0027] Figure 6 This is a second exploded view of the loudspeaker provided in this embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the diaphragm being connected to the support frame according to an embodiment of the present invention;

[0029] Figure 8 This is a schematic diagram of the diaphragm provided in an embodiment of the present invention.

[0030] In the picture:

[0031] 1. Support frame; 11. Receiving cavity; 12. Mounting port; 13. First heat dissipation layer; 14. Heat dissipation port; 2. Diaphragm; 21. Second heat dissipation layer; 22. Pleated part; 3. Voice coil; 4. Magnetic circuit assembly; 41. Yoke plate; 411. Heat dissipation hole; 412. Third heat dissipation layer; 42. Main magnetic component; 421. Heat dissipation passage; 43. Secondary magnetic component; 44. Magnetic guide plate. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0033] 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.

[0034] In this invention, 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.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0036] like Figures 1-8 As shown, this embodiment provides a loudspeaker, which includes a support frame 1, a diaphragm 2, and a voice coil 3. The support frame 1 has a receiving cavity 11 and a mounting port 12. The receiving cavity 11 is connected to the outside through the mounting port 12. The end of the support frame 1 with the mounting port 12 is provided with a first heat dissipation layer 13. The diaphragm 2 is covered by the mounting port 12 and is provided with a second heat dissipation layer 21. The second heat dissipation layer 21 abuts against the first heat dissipation layer 13. The voice coil 3 is connected to the second heat dissipation layer 21 and extends into the receiving cavity 11. The voice coil 3 is spaced apart from the inner wall of the receiving cavity 11.

[0037] In this embodiment, the support frame 1 is provided with a receiving cavity 11 and a mounting port 12. The receiving cavity 11 is connected to the outside through the mounting port 12, which not only facilitates the assembly of the speaker but also provides space for heat dissipation of the components inside the receiving cavity 11. A first heat dissipation layer 13 is provided at the end of the support frame 1 with the mounting port 12. A diaphragm 2 covers the mounting port 12, allowing the diaphragm 2 to transfer the heat generated by its own vibration to the outside through the first heat dissipation layer 13, thereby improving heat dissipation effect and efficiency. The diaphragm 2 is provided with a second heat dissipation layer 21, which abuts against the first heat dissipation layer 13, further improving heat dissipation efficiency. The voice coil 3 is connected to the second heat dissipation layer 21, ensuring that the heat generated by the voice coil 3 during operation can be quickly dissipated through the second heat dissipation layer 21. The voice coil 3 extends into the receiving cavity 11 and is spaced apart from the inner wall of the receiving cavity 11, ensuring sufficient heat dissipation space between the voice coil 3 and the support frame 1, while avoiding direct contact between the voice coil 3 and the inner wall of the receiving cavity 11, thus improving the stability and durability of the speaker. With the above settings, the speaker in this embodiment can improve its heat dissipation effect and efficiency.

[0038] The specific structure of the loudspeaker is described below:

[0039] Specifically, such as Figure 5 and Figure 6 As shown, the support frame 1 includes a bracket and a support plate. The bracket has a through-hole accommodating cavity 11 to facilitate assembly and connection with other components. The support plate is arranged around the inner wall of the accommodating cavity 11 and has multiple limiting protrusions. The voice coil 3 is disposed between the multiple limiting protrusions to facilitate the assembly of the voice coil 3.

[0040] Specifically, such as Figures 1-8 As shown, the diaphragm 2 in this embodiment has a plate-like overall structure to improve the utilization of structural space. In other embodiments, the diaphragm 2 is dome-shaped; that is, as long as the above-mentioned functions can be achieved, the specific structure of the diaphragm 2 is not limited in detail here.

[0041] More specifically, the diaphragm 2 has a pleated portion 22, and the pleated portion 22 has a second heat dissipation layer 21. The pleated portion 22 includes folds and patterns, thereby increasing the contact area between the diaphragm 2 and the air, thus improving the heat dissipation efficiency.

[0042] Specifically, such as Figure 4 , Figure 6 and Figure 7 As shown, a second heat dissipation layer 21 is provided and arranged in a ring shape, thereby increasing the contact area between the second heat dissipation layer 21 and the first heat dissipation layer 13. This not only provides a more uniform heat dissipation effect but also effectively conducts the heat generated by the diaphragm 2 to the support frame 1, and further dissipates heat through air convection. Figures 5-8As shown, or, multiple second heat dissipation layers 21 are provided, and the multiple second heat dissipation layers 21 are arranged sequentially at intervals along the circumference of the voice coil 3. By having the second heat dissipation layers 21 and the first heat dissipation layer 13 abut against each other, not only can the heat dissipation area be controlled more precisely and the heat dissipation efficiency be improved, but the accumulation of heat inside the second heat dissipation layer 21 can also be reduced, thus improving the uniformity of heat dissipation. It should be noted that those skilled in the art can adjust the arrangement of the second heat dissipation layers 21 according to the specific shape and size of the voice coil 3, so as to adapt to the heat dissipation requirements of different speakers, which will not be described in detail here.

[0043] Specifically, such as Figures 1-6 As shown, the loudspeaker also includes a magnetic circuit assembly 4, which is connected to the support frame 1. The voice coil 3 is disposed in the magnetic gap formed by the magnetic circuit assembly, ensuring that the voice coil 3 can vibrate stably under the magnetic force of the magnetic circuit assembly 4.

[0044] More specifically, the magnetic circuit assembly 4 includes a yoke plate 41, which is connected to the support frame 1 and forms a heat dissipation hole 411 between the yoke plate 41 and the support frame 1. The accommodating cavity 11 is connected to the outside through the heat dissipation hole 411, so that the components inside the accommodating cavity 11 can dissipate heat in a timely manner through the heat dissipation hole 411, thereby further improving the heat dissipation effect of the speaker. Multiple heat dissipation holes 411 are provided to improve the heat dissipation efficiency of the speaker.

[0045] More specifically, in this embodiment, the yoke plate 41 is a cross-shaped plate, meaning the overall structure of the yoke plate 41 is cross-shaped. The yoke plate 41 has multiple connecting protrusions arranged sequentially along its circumference. The end of the support frame 1 away from the mounting opening 12 has a connecting recess that engages with the connecting protrusions. This engagement between the connecting protrusions and the connecting recess improves the connection strength and stability between the yoke plate 41 and the support frame 1. In other embodiments, the connecting recess is located on the yoke plate 41, and the connecting protrusion is located on the support frame 1. In short, as long as the above functions are achieved, the specific positions of the components are not limited.

[0046] Specifically, the magnetic circuit assembly 4 also includes a main magnetic component 42, which is connected to the yoke plate 41. Specifically, there are multiple main magnetic components 42, and a heat dissipation passage 421 is provided between the main magnetic components 42, which is connected to the heat dissipation hole 411. This allows the heat generated by the speaker to be dissipated to the outside more quickly through the heat dissipation hole 411 and the heat dissipation passage 421, thereby further improving the heat dissipation capacity of the speaker.

[0047] More specifically, in this embodiment, there are four main magnetic components 42, all of which are triangular prisms. The heat dissipation path 421 formed between the four main magnetic components 42 is in the shape of an "X". The "X" shaped heat dissipation path 421 can make more effective use of space, increase the heat dissipation area, and help the heat to be evenly distributed and quickly dissipated.

[0048] Specifically, the magnetic circuit assembly 4 also includes a secondary magnet 43, which is connected to the yoke plate. The voice coil 3 is positioned between the primary magnet 42 and the secondary magnet 43, ensuring that the voice coil 3 can vibrate stably under the magnetic force of the primary magnet 42 and the secondary magnet 43. Moreover, by setting the primary magnet 42 and the secondary magnet 43, the distribution of magnetic field lines is optimized, thereby improving the magnetic energy conversion efficiency.

[0049] More specifically, in this embodiment, both the main magnetic component 42 and the auxiliary magnetic component 43 are magnetic blocks. The main magnetic component 42 and the auxiliary magnetic component 43 are generally made of high-performance rare earth magnet materials, such as neodymium iron boron magnets. The main magnetic component 42 is used to provide a strong magnetic field, while the auxiliary magnetic component 43 is used to assist the main magnetic component 42 to enhance the magnetic field strength, so that the voice coil 3 vibrates more stably in the magnetic field.

[0050] More specifically, there are four auxiliary magnetic components 43, all of which are cuboids. The four auxiliary magnetic components 43 are spaced apart on the yoke plate 41, surrounding the main magnetic component 42. This helps to enhance the magnetic field strength of the main magnetic component 42 and make the magnetic field distribution more uniform. In other embodiments, there can be six or eight main magnetic components 42 and auxiliary magnetic components 43, all of which are cylindrical in shape. That is, as long as the above-mentioned functions can be achieved, the specific number and structural shape of the above-mentioned components are not limited here.

[0051] Specifically, multiple auxiliary magnets 43 are provided to assist the main magnet 42 and optimize the distribution of magnetic field lines. The support frame 1 is provided with multiple heat dissipation vents 14, and the accommodating cavity 11 is connected to the outside through the heat dissipation vents 14, so that the heat inside the accommodating cavity 11 can be dissipated to the outside more quickly through the heat dissipation vents 14. The multiple auxiliary magnets 43 are correspondingly installed in the multiple heat dissipation vents 14, which not only facilitates the assembly of the auxiliary magnets 43 with the support frame 1 and reduces the difficulty of operation, but also helps to improve the heat dissipation efficiency of the speaker.

[0052] It should be noted that by setting multiple main magnetic components 42 and auxiliary magnetic components 43, not only is the contact area between the magnetic circuit assembly 4 and the air increased, which is beneficial to improving the heat dissipation effect, but the air flow inside the accommodating cavity 11 is also facilitated, thereby increasing the thermal convection coefficient and enabling the magnetic circuit assembly 4 to absorb heat and dissipate it to the outside more quickly.

[0053] Specifically, the magnetic circuit assembly 4 also includes a magnetic guide plate 44, which is disposed on the main magnetic component 42 and / or the auxiliary magnetic component 43, thereby enhancing the performance of the magnetic circuit assembly 4. Furthermore, the shape of the magnetic guide plate 44 conforms to that of the main magnetic component 42 and / or the auxiliary magnetic component 43, facilitating assembly and connection between the magnetic guide plate 44 and the main magnetic component 42 and / or the auxiliary magnetic component 43, ensuring a uniform distribution of the magnetic field. The magnetic guide plate 44 is generally made of a material with high magnetic permeability, such as alloys of iron, nickel, or cobalt, and is disposed on the main magnetic component 42 and / or the auxiliary magnetic component 43 by means of bonding or screwing. No specific limitations are placed on the specific material and connection method of the magnetic guide plate 44, as long as the aforementioned functions are achieved.

[0054] Specifically, such as Figure 6 As shown, a third heat dissipation layer 412 is provided on the yoke plate 41, which can increase the heat exchange area between the yoke plate 41 and the external environment, thereby improving the heat dissipation efficiency.

[0055] It should be noted that, as Figures 1-8 As shown, in this embodiment, the voice coil 3 is a heat source. The voice coil 3 can diffuse heat into the accommodating cavity 11 in the form of thermal radiation, and then dissipate heat through the heat dissipation path 421, heat dissipation hole 411 and heat dissipation port 14.

[0056] Specifically, in this embodiment, the first heat dissipation layer 13, the second heat dissipation layer 21, and the third heat dissipation layer 412 are all processed using a spray coating process to form a thin heat dissipation layer with a thickness of 1µm to 100µm and high thermal conductivity and high emissivity. This not only ensures the heat dissipation effect but also helps save space and control costs. The first heat dissipation layer 13, the second heat dissipation layer 21, and the third heat dissipation layer 412 can also be applied to the corresponding components using methods such as adhesive application; this is not a limitation here. Furthermore, the specific thickness of the heat dissipation layer should be appropriate. Too little thickness will result in poor heat dissipation, while too much thickness will cause the diaphragm 2 to break due to excessive stress during vibration. Therefore, the thickness of the heat dissipation layer needs to be adjusted according to the different dimensions of the diaphragm 2; the specific thickness of the diaphragm 2 will not be discussed in detail here.

[0057] More specifically, the heat from the voice coil 3 is sequentially transferred to the diaphragm 2 and the support frame 1 through the heat dissipation thin layer, and then dissipated through convection with the external air via the first heat dissipation layer 13 on the support frame 1. To ensure good heat dissipation effect, the material used in the heat dissipation thin layer needs to have high thermal conductivity and emissivity, while its Young's modulus needs to be low. It is understood that the heat dissipation thin layer in this embodiment includes silver nanowires, carbon black, and resin adhesive. Since the silver nanowires have high thermal conductivity, the heat dissipation thin layer can reduce the operating temperature of the speaker, thereby improving the stability and service life of the speaker. Carbon black has a black appearance and high emissivity, which can increase the heat absorption and radiation capacity of the heat dissipation thin layer, thereby further improving the heat dissipation efficiency. The resin adhesive has good adhesion and durability, which can firmly bond the silver nanowires and carbon black together, thereby forming a stable and durable heat dissipation thin layer. In other embodiments, the first heat dissipation layer 13, the second heat dissipation layer 21 and the third heat dissipation layer 412 include, but are not limited to, one or more of thermally conductive silicone, thermally conductive graphite sheet, aluminum alloy or copper alloy, as long as they can achieve the above-mentioned functions. The specific materials of the above-mentioned heat dissipation thin layers are not limited in this way.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A loudspeaker, characterized in that, include: The support frame (1) is provided with a receiving cavity (11) and an installation port (12). The receiving cavity (11) is connected to the outside through the installation port (12). The end of the support frame (1) with the installation port (12) is provided with a first heat dissipation layer (13). A diaphragm (2) is provided on the mounting port (12) and a second heat dissipation layer (21) is provided, the second heat dissipation layer (21) abutting against the first heat dissipation layer (13); The voice coil (3) is connected to the second heat dissipation layer (21) and extends into the accommodating cavity (11). The voice coil (3) is spaced apart from the inner wall of the accommodating cavity (11).

2. The loudspeaker according to claim 1, characterized in that, The loudspeaker also includes a magnetic circuit assembly (4), which is connected to the support frame (1), and the voice coil (3) is disposed in the magnetic gap formed by the magnetic circuit assembly (4).

3. The loudspeaker according to claim 2, characterized in that, The magnetic circuit assembly (4) includes a yoke plate (41) and a main magnetic component (42). The yoke plate (41) is connected to the support frame (1) and forms a heat dissipation hole (411) between it and the support frame (1). The accommodating cavity (11) is connected to the outside through the heat dissipation hole (411). The main magnetic component (42) is connected to the yoke plate (41).

4. The loudspeaker according to claim 3, characterized in that, The main magnetic component (42) is provided in multiple ways, and a heat dissipation passage (421) is provided between the main magnetic components (42) to connect with the heat dissipation hole (411).

5. The loudspeaker according to any one of claims 3-4, characterized in that, The magnetic circuit assembly (4) further includes a secondary magnet (43), which is connected to the yoke plate (41), and the voice coil (3) is disposed between the main magnet (42) and the secondary magnet (43).

6. The loudspeaker according to claim 5, characterized in that, The auxiliary magnetic component (43) is provided in multiple ways, the support frame (1) is provided with multiple heat dissipation ports (14), the accommodating cavity (11) is connected to the outside through the heat dissipation ports (14), and the multiple auxiliary magnetic components (43) are correspondingly installed in the multiple heat dissipation ports (14).

7. The loudspeaker according to claim 5, characterized in that, The magnetic circuit assembly (4) further includes a magnetic guide plate (44), which is disposed on the main magnetic component (42) and / or the auxiliary magnetic component (43).

8. The loudspeaker according to claim 3, characterized in that, The yoke plate (41) is provided with a third heat dissipation layer (412).

9. The loudspeaker according to claim 1, characterized in that, The second heat dissipation layer (21) is provided and arranged in a ring shape; Alternatively, multiple second heat dissipation layers (21) may be provided, and multiple second heat dissipation layers (21) may be arranged sequentially at intervals along the circumference of the voice coil (3).

10. The loudspeaker according to claim 1, characterized in that, The diaphragm (2) is provided with a pleated portion (22), and the pleated portion (22) is provided with the second heat dissipation layer (21).

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