A loudspeaker and electronic device
Patent Information
- Application Number
- CN202522328407.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-10-31
AI Technical Summary
[0003]然而，相关技术中，磁路组件能够作用于振膜上的驱动力小，导致扬声器的声学性能较差
[0007]本申请的有益效果为：通过设置第一音圈和第二音圈这两个音圈，两个音圈的绕线长度之和可以更长，而在磁路组件产生磁场的强度不变的基础上，音圈的绕线长度越大，对应的电力换能系数就越大，使得磁路组件能够作用于振膜上的驱动力就越大，从而使得振膜低频振动时更加稳定，失真更轻微，进而使得扬声器能够具有更好的低频响应；并且将第一音圈设置在振膜上，可以增加振膜的刚性，使得振膜的各个部分的振动可以更加同步，减小振膜在高频振动时的分割振动，进而使得扬声器能够具有更好的高频响应，进而使得扬声器可以在全频段均具有良好的声学性能。此外，通过将第一音圈和第二音圈均设置于振膜靠近磁路组件的一侧，使得第一音圈和第二音圈可以与磁路组件的距离更近，使得磁路组件产生的磁场可以更好的作用于第一音圈和第二音圈，可以进一步增大磁路组件能够作用于振膜上的驱动力；此外，第一音圈和第二音圈相连接，安装音圈组件时，可以将第一音圈通过胶水形成的粘接层粘连于振膜上，即可实现音圈组件的整体安装，音圈组件仅需要一次导胶水工艺即可实现与振膜的连接，安装工序更少，工艺更简单，可以降低扬声器的生产成本，并且批量生产扬声器时更易保证扬声器的一致性。
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Figure CN224875155U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of acoustic devices, and more particularly to a loudspeaker and an open-back headphone. Background Technology
[0002] A loudspeaker typically consists of a diaphragm, a voice coil, and a magnetic circuit assembly. The voice coil is connected to the diaphragm, and when energized, it generates a magnetic field. The voice coil moves under the influence of the magnetic field of the magnetic circuit assembly, which in turn causes the diaphragm to vibrate and produce sound. With the rapid development of loudspeakers, people have increasingly higher requirements for their acoustic performance.
[0003] However, in related technologies, the magnetic circuit components can exert a small driving force on the diaphragm, resulting in poor acoustic performance of the loudspeaker. Utility Model Content
[0004] This application provides a loudspeaker and electronic device, wherein the magnetic circuit assembly can exert a large driving force on the diaphragm, thereby improving the acoustic performance of the loudspeaker.
[0005] In a first aspect, this application provides a loudspeaker, comprising: Sink stand; A magnetic circuit assembly is disposed on the basin frame, the magnetic circuit assembly having a magnetic gap; A diaphragm is located on the side of the magnetic circuit assembly having the magnetic gap; and, A voice coil assembly is located on the side of the diaphragm near the magnetic circuit assembly. The voice coil assembly includes a first voice coil and a second voice coil. The first voice coil is connected to the diaphragm. The second voice coil is located on the side of the first voice coil near the magnetic circuit assembly. The second voice coil is set at an angle to the first voice coil. The second voice coil is connected to the first voice coil, and at least a portion of the second voice coil is inserted into the magnetic gap.
[0006] Secondly, this application also provides an electronic device, including a device body and a speaker, wherein the speaker is connected to the device body.
[0007] The beneficial effects of this application are as follows: By setting two voice coils, a first voice coil and a second voice coil, the sum of the winding lengths of the two voice coils can be longer. With the magnetic field strength generated by the magnetic circuit assembly remaining constant, the larger the winding length of the voice coil, the greater the corresponding electrical transduction coefficient. This results in a greater driving force that the magnetic circuit assembly can exert on the diaphragm, making the diaphragm more stable during low-frequency vibration and reducing distortion, thereby enabling the speaker to have a better low-frequency response. Furthermore, placing the first voice coil on the diaphragm increases the rigidity of the diaphragm, allowing the vibration of different parts of the diaphragm to be more synchronized and reducing the segmentation vibration of the diaphragm during high-frequency vibration. This, in turn, enables the speaker to have a better high-frequency response and thus allows the speaker to have good acoustic performance across the entire frequency range. Furthermore, by placing both the first and second voice coils on the side of the diaphragm closer to the magnetic circuit assembly, the first and second voice coils can be closer to the magnetic circuit assembly, allowing the magnetic field generated by the magnetic circuit assembly to better act on the first and second voice coils, further increasing the driving force that the magnetic circuit assembly can exert on the diaphragm. In addition, the first and second voice coils are connected, and when installing the voice coil assembly, the first voice coil can be bonded to the diaphragm using an adhesive layer formed by glue, thus achieving the overall installation of the voice coil assembly. The voice coil assembly only requires one glue application process to connect to the diaphragm, reducing installation steps and simplifying the process. This can reduce the production cost of the loudspeaker and make it easier to ensure the consistency of loudspeakers during mass production. Attached Figure Description
[0008] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0009] Figure 1 This is a schematic diagram of the speaker structure in one embodiment of this application; Figure 2 This is an exploded view of the speaker components in one embodiment of this application; Figure 3 This is a partial structural diagram of a speaker in one embodiment of this application; Figure 4 This is a partial structural diagram of the loudspeaker when the second voice coil is located at the first maximum displacement in another embodiment of this application; Figure 5 For this application Figure 4 A partial structural diagram of the loudspeaker when the second voice coil is located at the second maximum displacement in the embodiment; Figure 6 For this application Figure 4A schematic diagram of the magnetic field distribution of the first magnet and the second magnet in the embodiment; Figure 7 This is a partial structural diagram of the speaker in another embodiment of this application; Figure 8 For this application Figure 7 A schematic diagram of the magnetic field distribution of the first magnet and the second magnet in the embodiment; Figure 9 This is a partial structural diagram of the speaker in another embodiment of this application; Figure 10 This is a partial structural diagram of the speaker in another embodiment of this application; Figure 11 For this application Figure 10 A schematic diagram of the magnetic field distribution of the first magnet and the second magnet in the embodiment; Figure 12 This is a schematic diagram of the voice coil assembly in one embodiment of this application; Figure 13 This is a schematic diagram of the voice coil assembly in another embodiment of this application.
[0010] Figure label: 10. Magnetic circuit assembly; 11. Magnetic gap; 13. First magnet; 14. Second magnet; 15. First magnetic conductor; 151. First magnetic surface; 16. Second magnetic conductor; 161. Second magnetic surface; 20. Diaphragm; 21. Dome; 30. Voice coil assembly; 31. First voice coil; 32. Second voice coil; 321. First end face; 322. Second end face; 33. Connector frame; 34. Wire; 40. Adhesive layer; 50. Frame; 51. Substrate; 52. Edge guard. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0012] This application provides a loudspeaker and electronic device to solve the problem in the related art that the driving force that the magnetic circuit assembly can exert on the diaphragm is small, resulting in poor acoustic performance of the loudspeaker.
[0013] Firstly, this application provides a loudspeaker, such as Figures 1 to 3 As shown, the loudspeaker includes a frame 50, a magnetic circuit assembly 10, a diaphragm 20, and a voice coil assembly 30.
[0014] The magnetic circuit assembly 10 is mounted on a frame 50, which provides support for the magnetic circuit assembly 10. The magnetic circuit assembly 10 has a magnetic gap 11. The diaphragm 20 is located on the side of the magnetic circuit assembly 10 with the magnetic gap 11. The voice coil assembly 30 is located on the side of the diaphragm 20 near the magnetic circuit assembly 10. The voice coil assembly 30 includes a first voice coil 31 and a second voice coil 32. The first voice coil 31 is connected to the diaphragm 20, and the second voice coil 32 is located on the side of the first voice coil 31 near the magnetic circuit assembly 10. The second voice coil 32 is set at an angle to the first voice coil 31 and is connected to the first voice coil 31. At least a portion of the second voice coil 32 is inserted into the magnetic gap 11. It should be noted that the magnetic gap 11 provides space for the second voice coil 32 to move. When the first voice coil 31 and the second voice coil 32 are energized, a magnetic field is generated, allowing the first voice coil 31 and the second voice coil 32 to move synchronously under the influence of the magnetic field of the magnetic circuit assembly 10, thereby driving the diaphragm 20 to vibrate and produce sound.
[0015] Understandably, in this application, by setting two voice coils, the first voice coil 31 and the second voice coil 32, the sum of the winding lengths of the two voice coils can be longer. While maintaining the same magnetic field strength generated by the magnetic circuit assembly 10, the longer the winding length of the voice coils, the greater the corresponding electrical transduction coefficient BL. This results in a greater driving force exerted by the magnetic circuit assembly 10 on the diaphragm 20, making the diaphragm 20 more stable during low-frequency vibration, with less distortion, and thus enabling the speaker to have a better low-frequency response. Furthermore, placing the first voice coil 31 on the diaphragm 20 increases the rigidity of the diaphragm 20, allowing the vibrations of different parts of the diaphragm 20 to be more synchronized, reducing the segmented vibration of the diaphragm 20 during high-frequency vibration, and thus enabling the speaker to have a better high-frequency response, thereby allowing the speaker to have good acoustic performance across the entire frequency range.
[0016] It should also be noted that by placing both the first voice coil 31 and the second voice coil 32 on the side of the diaphragm 20 close to the magnetic circuit assembly 10, the first voice coil 31 and the second voice coil 32 can be closer to the magnetic circuit assembly 10, allowing the magnetic field generated by the magnetic circuit assembly 10 to better act on the first voice coil 31 and the second voice coil 32. This can further improve the power transduction coefficient BL and increase the driving force that the magnetic circuit assembly 10 can exert on the diaphragm 20. In addition, the first voice coil 31 and the second voice coil 32 are connected. When installing the voice coil assembly 30, the first voice coil 31 can be bonded to the diaphragm 20 through the adhesive layer 40 formed by glue, thus achieving the overall installation of the voice coil assembly 30. The voice coil assembly 30 only requires one glue application process to achieve the connection with the diaphragm 20, with fewer installation steps and a simpler process. This can reduce the production cost of the loudspeaker and make it easier to ensure the consistency of the loudspeakers during mass production.
[0017] In some embodiments, the first voice coil 31 is a planar voice coil, and the second voice coil 32 is arranged perpendicularly to the first voice coil 31, so that the overall shape of the voice coil assembly 30 can be "L" or "T" shaped. It is understood that setting the first voice coil 31 as a planar voice coil is beneficial for increasing the connection area between the planar voice coil and the diaphragm 20, thereby increasing the rigidity of more areas of the diaphragm 20, further increasing the overall rigidity of the diaphragm 20. Furthermore, the planar voice coil experiences more uniform force, making the diaphragm 20 more stable during high-frequency vibration, thus enabling the speaker to have a better high-frequency response. The vertically arranged second voice coil 32 has a higher conversion efficiency in the magnetic field generated by the magnetic circuit assembly 10, which can further improve the electrical transduction coefficient BL, thereby enabling the speaker to have a better low-frequency response, and ultimately enabling the speaker to have better acoustic performance across the entire frequency range.
[0018] The planar voice coil can be connected to the dome 21 of the diaphragm 20, and the planar voice coil and the dome 21 are arranged parallel to each other. The dome 21 is the main vibrating part of the diaphragm 20. The planar voice coil can increase the rigidity of the dome 21, making the dome 21 more stable when vibrating at high frequencies.
[0019] In other embodiments, both the first voice coil 31 and the second voice coil 32 can be cylindrical voice coils. It is understood that a cylindrical voice coil is a ring-shaped structure with a hollow center, which reduces the weight of the first voice coil 31 and the second voice coil 32, thereby reducing the vibration resistance experienced by the diaphragm 20 during vibration and improving the acoustic performance of the loudspeaker.
[0020] In some embodiments, the central axis of the first voice coil 31 and the central axis of the second voice coil 32 coincide, that is, the first voice coil 31 and the second voice coil 32 are coaxially arranged. This can prevent the asynchronous movement of the first voice coil 31 and the second voice coil 32 during vibration from causing split vibration, thereby improving the acoustic performance of the loudspeaker.
[0021] In some embodiments, the orthographic projection of the first voice coil 31 onto the diaphragm 20 overlaps the orthographic projection of the magnetic gap 11 onto the diaphragm 20, making the first voice coil 31 closer to the region where the magnetic gap 11 is located. The region where the magnetic gap 11 is located is a region with a relatively dense magnetic field distribution, thereby enabling the first voice coil 31 to generate stronger magnetic coupling with the magnetic circuit assembly 10. This is beneficial to increasing the driving force of the magnetic circuit assembly 10 on the diaphragm 20, thereby enabling the speaker to have a better low-frequency response.
[0022] In some embodiments, the first voice coil 31 can be integrally formed with the second voice coil 32, and the first voice coil 31 and the second voice coil 32 can be connected by a wire 34 (e.g., Figure 12The first voice coil 31 and the second voice coil 32 are wound together, allowing them to be formed in a single winding process. This reduces the number of steps in the voice coil assembly 30 and makes it easier to ensure the consistency and synchronization of movement between the first voice coil 31 and the second voice coil 32. It also reduces the risk of separation between the first voice coil 31 and the second voice coil 32. The conductor 34 can be an enameled wire of copper-aluminum alloy or its conductive wire.
[0023] like Figure 4 As shown, in some other embodiments, the voice coil assembly 30 further includes a connecting frame 33. The first voice coil 31 can be set separately from the second voice coil 32, and the second voice coil 32 is connected to the first voice coil 31 through the connecting frame 33. This allows the position of the second voice coil 32 to be adjusted so that most of the second voice coil 32 is always in the area where the magnetic gap 11 is located during the vibration of the diaphragm 20, thereby ensuring that the second voice coil 32 always has a large magnetic driving force.
[0024] The connecting frame 33 can be a ring-shaped frame to facilitate the formation of the ring-shaped second voice coil 32. The first voice coil 31 and the second voice coil 32 can be connected in series or in parallel. The first voice coil 31 can be printed on the diaphragm 20 by means of printed circuits, which can reduce the thickness of the first voice coil 31, improve the bonding strength between the first voice coil 31 and the diaphragm 20, and prevent the first voice coil 31 from detaching from the diaphragm 20. Of course, the first voice coil 31 can also be formed by winding wire 34 or other methods. The second voice coil 32 can be printed on the connecting frame 33 by means of printed circuits. Of course, the second voice coil 32 can also be formed on the connecting frame 33 by winding wire 34 or other methods.
[0025] In some embodiments, the second voice coil 32 is located on the outer side of the connecting frame 33, that is, the second voice coil 32 is located on the side of the connecting frame 33 away from the central axis of the connecting frame 33. It is understood that compared to forming the second voice coil 32 on the inner side or bottom of the connecting frame 30, which requires first forming the second voice coil 32 by winding it on other support frames and then installing the second voice coil 32 on the connecting frame 33, the formation process of the voice coil assembly 30 is more complex and difficult. In this embodiment, the second voice coil 32 is formed on the outer side of the connecting frame 33, so that when forming the voice coil assembly 30, the connecting frame 33 can be directly used as a support frame to wind and form the second voice coil 32, making the formation process of the voice coil assembly 30 simpler and easier.
[0026] See also Figures 3 to 10As shown, in some embodiments of this application, the magnetic circuit assembly 10 includes a first magnet 13; a frame 50 is disposed opposite to the diaphragm 20, and the frame 50 is used to provide support for the first magnet 13; the first magnet 13 is connected to the side of the frame 50 near the diaphragm 20. It is understood that the first magnet 13 can be a permanent magnet or a magnetic steel, and the first magnet 13 can generate a magnetic field that can act on the first voice coil 31 and the second voice coil 32, thereby driving the diaphragm 20 to vibrate when the first voice coil 31 and the second voice coil 32 are energized.
[0027] like Figure 3 and Figure 4 As shown, in some embodiments, the magnetic circuit assembly 10 may further include a second magnet 14. The second magnet 14 is connected to the side of the frame 50 near the diaphragm 20 and is arranged around the outer periphery of the first magnet 13, forming a magnetic gap 11 between the second magnet 14 and the first magnet 13. It is understood that the second magnet 14 can be a permanent magnet or a magnetic steel. The second magnet 14 can generate a magnetic field that can act on the first voice coil 31 and the second voice coil 32, thereby driving the diaphragm 20 to vibrate when the first voice coil 31 and the second voice coil 32 are energized. At the same time, by providing magnetic driving force to the first voice coil 31 and the second voice coil 32 through the first magnet 13 and the second magnet 14, a greater driving force can be provided to the first voice coil 31 and the second voice coil 32, thereby enabling the speaker to have a better low-frequency response.
[0028] The magnetization direction of the second magnet 14 is opposite to that of the first magnet 13. For example, when the end of the first magnet 13 closest to the diaphragm 20 is the N pole, the end of the first magnet 13 furthest from the diaphragm 20 is the S pole, and the end of the second magnet 14 closest to the diaphragm 20 is the S pole, and the end of the second magnet 14 furthest from the diaphragm 20 is the N pole; when the end of the first magnet 13 closest to the diaphragm 20 is the S pole, the end of the first magnet 13 furthest from the diaphragm 20 is the N pole, and the end of the second magnet 14 furthest from the diaphragm 20 is the N pole; in this way, a magnetic circuit can be formed between the first magnet 13 and the second magnet 14.
[0029] In some embodiments, when the magnetic circuit assembly 10 may further include a second magnet 14, the magnetic circuit assembly 10 may also include a first magnetic guide 15 and a second magnetic guide 16. The first magnetic guide 15 is disposed on the side of the first magnet 13 near the diaphragm 20, and the first magnetic guide 15 is used to guide the magnetic field generated by the first magnet 13 to the magnetic gap 11. The second magnetic guide 16 is disposed on the side of the second magnet 14 near the diaphragm 20 and is disposed opposite to the first magnetic guide 15. The second magnetic guide 16 is used to guide the magnetic field generated by the second magnet 14 to the magnetic gap 11.
[0030] Understandably, both the first magnetic conductor 15 and the second magnetic conductor 16 can function as magnetic conductors in the magnetic field circuit, causing the magnetic fields generated by the first magnet 13 and the second magnet 14 to concentrate in the region where the magnetic gap 11 is located. This enhances the magnetic field strength in the region where the magnetic gap 11 is located, thereby providing greater driving force for the first voice coil 31 and the second voice coil 32, and ultimately enabling the speaker to have a better low-frequency response. The first magnetic conductor 15 and the second magnetic conductor 16 can be washer components made of low-carbon steel.
[0031] Taking the end face of the second voice coil 32 near the diaphragm 20 as the first end face 321, the end face of the second voice coil 32 away from the diaphragm 20 as the second end face 322, the side of the first magnetic conductor 15 near the first magnet 13 as the first magnetic surface 151, and the side of the second magnetic conductor 16 near the second magnet 14 as the second magnetic surface 161 as an example: like Figures 4 to 6 As shown, in some embodiments, when the magnetic circuit assembly 10 further includes a second magnet 14, a first magnetic conductor 15, and a second magnetic conductor 16, and the first voice coil 31 and the second voice coil 32 are separately disposed, and the second voice coil 32 is connected to the first voice coil 31 through a connecting frame 33, when the diaphragm 20 vibrates towards the magnetic circuit assembly 10 to the first maximum displacement (e.g. Figure 4 The distance between the first end face 321 and the frame 50 in the axial direction of the second magnet 14 is less than the distance between the first magnetically conductive surface 151 and the second magnetically conductive surface 161 and the frame 50 in the axial direction of the second magnet 14; when the diaphragm 20 vibrates away from the magnetic circuit assembly 10 to the second maximum displacement (e.g. Figure 5 The distance between the second end face 322 and the basin frame 50 in the axial direction of the second magnet 14 is less than the distance between the first magnetic surface 151 and the second magnetic surface 161 and the basin frame 50 in the axial direction of the second magnet 14.
[0032] It should be noted that, in this embodiment, the first maximum displacement refers to the position where the second voice coil 32 is closest to the magnetic circuit assembly 10 in the movement trajectory of the diaphragm 20. At this point, the diaphragm 20 cannot continue to vibrate towards the magnetic circuit assembly 10. Compared to the distances between the first magnetically conductive surface 151 and the second magnetically conductive surface 161 and the frame 50, the distance between the first end face 321 and the frame 50 is closer. Figure 4 Taking the shown perspective as an example, at this time, the first end face 321 is lower than the first magnetically conductive surface 151 and the second magnetically conductive surface 161. The second maximum displacement point refers to the position where the second voice coil 32 is furthest from the magnetic circuit assembly 10 in the movement trajectory of the diaphragm 20. At this point, the diaphragm 20 cannot continue to vibrate in the direction away from the magnetic circuit assembly 10. Compared with the distances between the first magnetically conductive surface 151 and the second magnetically conductive surface 161 and the frame 50, the distance between the second end face 322 and the frame 50 is closer. Figure 5Taking the shown perspective as an example, the second end face 322 is lower than the first magnetic surface 151 and the second magnetic surface 161.
[0033] It is understandable that, such as Figure 6 As shown, under the magnetic guidance of the first magnetically conductive element 15 and the second magnetically conductive element 16, the magnetic field distribution is usually most dense in the region between the first magnetically conductive element 15 and the second magnetically conductive element 16 (hereinafter referred to as the magnetic concentration region), resulting in the maximum magnetic field strength in the magnetic concentration region. Taking the magnetic concentration region as the starting point, the magnetic field strength gradually weakens in the direction away from or close to the diaphragm 20. When the diaphragm 20 vibrates to the first maximum displacement, the diaphragm 20 moves away from the magnetic circuit assembly 10 ( Figure 4 When the diaphragm 20 moves towards the magnetic concentration area (in the upward direction), the second voice coil 32 moves closer to the magnetic concentration area, and the magnetic driving force on the second voice coil 32 gradually increases. At the same time, the first voice coil 31 moves away from the magnetic concentration area, causing the magnetic driving force on the first voice coil 31 to gradually decrease. Thus, the overall force on the voice coil assembly 30 formed by the first voice coil 31 and the second voice coil 32 remains basically unchanged or changes very little. Similarly, when the diaphragm 20 vibrates to the second maximum displacement, the diaphragm 20 moves towards the magnetic circuit assembly 10 (in the upward direction). Figure 5 When the second voice coil 32 moves away from the magnetic concentration area (in the downward direction), the magnetic driving force on the second voice coil 32 gradually decreases, while the first voice coil 31 moves closer to the magnetic concentration area, causing the magnetic driving force on the first voice coil 31 to gradually increase. As a result, the overall force on the voice coil assembly 30 formed by the first voice coil 31 and the second voice coil 32 remains basically unchanged or changes very little. This makes the magnetic driving force on the diaphragm 20 more uniform and consistent throughout the entire vibration process, resulting in a more stable vibration of the diaphragm 20 and a more linear vibration. This can reduce the distortion of the loudspeaker and further improve the acoustic performance of the loudspeaker.
[0034] like Figure 7 and Figure 8 As shown, in some embodiments, when the magnetic circuit assembly 10 further includes a second magnet 14, a first magnetic conductor 15, and a second magnetic conductor 16, the outer diameter of the first magnetic conductor 15 is smaller than the outer diameter of the first magnet 13, and the inner diameter of the second magnetic conductor 16 is larger than the inner diameter of the second magnet 14.
[0035] It can be understood that, for example Figure 8As shown, by setting the diameter distance between the first magnetic conductor 15 and the second magnetic conductor 16, the distance between the first magnetic conductor 15 and the second magnetic conductor 16 can be greater than the distance between the first magnet 13 and the second magnet 14. This reduces the magnetic field distribution between the first magnetic conductor 15 and the second magnetic conductor 16, making the magnetic field distribution in the area where the magnetic gap 11 is located more uniform. Consequently, during the vibration of the diaphragm 20, the overall force on the voice coil assembly 30 is more uniform, resulting in a more uniform and consistent magnetic driving force on the diaphragm 20 throughout the vibration process. This makes the vibration of the diaphragm 20 more stable and closer to linear motion, thereby reducing speaker distortion and further improving the acoustic performance of the speaker.
[0036] like Figure 9 As shown, in some embodiments, the magnetic circuit assembly 10 may also include only the frame 50 and the first magnet 13, without the second magnet 14. In this case, the frame 50 includes a base 51 and a baffle portion 52. The base 51 is disposed opposite to the diaphragm 20, the baffle portion 52 is connected to the base 51, the first magnet 13 is connected to the side of the base 51 near the diaphragm 20, the baffle portion 52 is disposed around the outer periphery of the first magnet 13, and a magnetic gap 11 is formed between the baffle portion 52 and the first magnet 13.
[0037] It is understood that the frame 50 is made of non-magnetic material. In this embodiment, the magnetic circuit assembly 10 includes only one magnet, the first magnet 13. Compared with two magnets, one magnet is lighter and can effectively reduce the overall weight of the speaker. In addition, the baffle 52 can block and reflect the magnetic field to a certain extent, making the magnetic field generated by the first magnet 13 more concentrated in the area where the magnetic gap 11 is located, which can increase the magnetic driving force applied by the first magnet 13 to the first voice coil 31 and the second voice coil 32.
[0038] It should also be noted that, in this embodiment, the magnetic circuit assembly 10 may include a first magnetic conductor 15 (such as...). Figure 9 (or does not have the first magnetic conductive element 15. When the magnetic circuit assembly 10 includes the first magnetic conductive element 15, the first magnetic conductive element 15 is disposed on the side of the first magnet 13 near the diaphragm 20, and is used to guide the magnetic field generated by the first magnet 13 to the magnetic gap 11.)
[0039] like Figure 10 and Figure 11As shown, in some embodiments, when the magnetic circuit assembly 10 includes a first magnet 13 and a second magnet 14, the magnetic circuit assembly 10 may also lack a first magnetic guide 15 and a second magnetic guide 16 to eliminate the magnetic guiding effect of the first magnetic guide 15 and the second magnetic guide 16. This makes the entire magnetic field distribution of the first magnet 13 and the second magnet 14 more uniform, thereby making the force on the first voice coil 31 and the second voice coil 32 more uniform. Consequently, the vibration of the diaphragm 20 becomes more stable and closer to linear motion, thus reducing speaker distortion. Furthermore, it ensures that the first voice coil 31 and the second voice coil 32 are always in a sufficiently strong magnetic field during the vibration of the diaphragm 20, which can further improve the electric transduction coefficient BL, thereby enabling the speaker to have better acoustic performance.
[0040] like Figure 12 and Figure 13 As shown, in some embodiments, when the first voice coil 31 is wound with wire 34, the first voice coil 31 can be a structure with one or more layers (that is, two or more layers of wire 34); when the second voice coil 32 is wound with wire 34, the second voice coil 32 can be a structure with one or more layers (that is, two or more layers of wire 34).
[0041] by Figure 12 For example, the first voice coil 31 can be a two-layer wire 34 structure, and the second voice coil 32 can be a ten-layer wire 34 structure; Figure 13 For example, the first voice coil 31 can be a two-layer conductor 34 structure, and the second voice coil 32 can be a six-layer conductor 34 structure. Of course, in other embodiments, the first voice coil 31 and the second voice coil 32 can also be other layers of conductor 34 structures.
[0042] Secondly, based on the aforementioned speaker, this application also provides an electronic device, including a device body and a speaker as described in any of the above embodiments, wherein the speaker is connected to the device body.
[0043] It should also be noted that the loudspeaker may also include a frame, with the diaphragm 20 connected to the frame, the magnetic circuit assembly 10 and the voice coil assembly 30 all located in the frame and connected to the device body through the frame; of course, the loudspeaker may also exclude the frame and connect the diaphragm 20 directly to the device body.
[0044] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A loudspeaker, characterized in that, include: Sink stand; A magnetic circuit assembly is disposed on the basin frame, the magnetic circuit assembly having a magnetic gap; A diaphragm is located on the side of the magnetic circuit assembly having the magnetic gap; as well as, A voice coil assembly is located on the side of the diaphragm near the magnetic circuit assembly. The voice coil assembly includes a first voice coil and a second voice coil. The first voice coil is connected to the diaphragm. The second voice coil is located on the side of the first voice coil near the magnetic circuit assembly. The second voice coil is set at an angle to the first voice coil. The second voice coil is connected to the first voice coil, and at least a portion of the second voice coil is inserted into the magnetic gap.
2. The loudspeaker according to claim 1, characterized in that, The first voice coil is a planar voice coil, and the second voice coil is arranged perpendicular to the first voice coil; or, both the first and second voice coils are cylindrical voice coils.
3. The loudspeaker according to claim 1, characterized in that, The first voice coil and the second voice coil are integrally formed.
4. The loudspeaker according to claim 1, characterized in that, The voice coil assembly further includes a connecting bracket, wherein the first voice coil and the second voice coil are separately disposed, and the second voice coil is connected to the first voice coil through the connecting bracket.
5. The loudspeaker according to claim 4, characterized in that, The second voice coil is located on the outside of the connecting frame.
6. The loudspeaker according to claim 1, characterized in that, The basin frame includes a base and a retaining edge, the base being disposed opposite to the diaphragm, and the retaining edge being connected to the base. The magnetic circuit assembly includes: A first magnet is connected to the side of the substrate near the diaphragm. A retaining edge is disposed around the outer periphery of the first magnet, and a magnetic gap is formed between the retaining edge and the first magnet.
7. The loudspeaker according to claim 1, characterized in that, The frame is disposed opposite to the diaphragm, and the magnetic circuit assembly includes: A first magnet is connected to the side of the frame near the diaphragm; and, A second magnet is connected to the side of the frame near the diaphragm and is arranged around the outer periphery of the first magnet, forming the magnetic gap between the second magnet and the first magnet.
8. The loudspeaker according to claim 7, characterized in that, The magnetic circuit assembly also includes: A first magnetic conductive element is disposed on the side of the first magnet near the diaphragm, and the first magnetic conductive element is used to guide the magnetic field generated by the first magnet to the magnetic gap; and, The second magnetic guide is disposed on the side of the second magnet near the diaphragm and is disposed opposite to the first magnetic guide. The second magnetic guide is used to guide the magnetic field generated by the second magnet to the magnetic gap.
9. The loudspeaker according to claim 8, characterized in that, The voice coil assembly further includes a connecting frame, wherein the first voice coil and the second voice coil are separately disposed, and the second voice coil is connected to the first voice coil through the connecting frame; the end face of the second voice coil near the diaphragm is the first end face, and the end face of the second voice coil away from the diaphragm is the second end face; the side of the first magnetic conductor near the first magnet is the first magnetic surface, and the side of the second magnetic conductor near the second magnet is the second magnetic surface; Wherein, when the diaphragm vibrates toward the magnetic circuit assembly to the first maximum displacement, the distance between the first end face and the frame in the axial direction of the second magnet is less than the distance between the first magnetic surface and the second magnetic surface and the frame in the axial direction of the second magnet; When the diaphragm vibrates away from the magnetic circuit assembly to the second maximum displacement, the distance between the second end face and the frame in the axial direction of the second magnet is less than the distance between the first magnetic surface and the distance between the second magnetic surface and the frame in the axial direction of the second magnet.
10. The loudspeaker according to claim 8, characterized in that, The outer diameter of the first magnetic conductive element is smaller than the outer diameter of the first magnet, and the inner diameter of the second magnetic conductive element is larger than the inner diameter of the second magnet.
11. An electronic device, characterized in that, It includes a device body and a speaker as claimed in any one of claims 1 to 10, the speaker being connected to the device body.