A new type of loudspeaker

Abstract

This invention discloses a novel loudspeaker, comprising a frame, a diaphragm, a magnetic circuit assembly, and a support. A centering support is provided on the frame, and the diaphragm is mounted on the frame. A first voice coil is located at the bottom of the diaphragm. The magnetic circuit assembly is connected to the centering support and includes a yoke, a side magnet, a first center magnet, and a second center magnet. The side magnet and the first center magnet are mounted on the top of the yoke, and the second center magnet is mounted on the bottom of the yoke. The support is mounted on the bottom of the frame and has a second voice coil. Viewed from above, the second center magnet is located within the second voice coil. The magnetic circuit assembly drives the first voice coil to vibrate, and the second voice coil drives the magnetic circuit assembly to vibrate. This novel loudspeaker avoids distortion caused by the first voice coil jumping out of the magnetic gap due to excessive amplitude, while simultaneously increasing the loudspeaker's volume.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic converter technology, and in particular to a novel loudspeaker. Background Technology

[0002] Currently, mobile devices such as smartphones and tablets enrich people's lives, and electroacoustic transducers play an indispensable role as audio devices. At the same time, consumers' demands for sound loudness are increasing, and designers are correspondingly raising the performance requirements for loudspeakers and other electroacoustic transducers. The voice coil, as the core of a loudspeaker, is located within a magnetic field. When the loudspeaker is energized, an audio current flows through the voice coil (coil), generating a magnetic field that varies with the audio current. This magnetic field interacts with the magnetic field of the permanent magnet, causing the voice coil to vibrate axially. In existing loudspeaker technology, to ensure overall thinness, the magnet is usually designed to be relatively thin, resulting in a smaller magnetic field range. Because the amplitude of the voice coil is larger at low frequencies, it is easy for the voice coil to jump out of the magnetic gap, causing nonlinear distortion in the loudspeaker. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a novel loudspeaker that does not distort at low frequencies and large amplitudes.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a novel loudspeaker, comprising:

[0005] The basin stand is provided with a centering support plate;

[0006] A diaphragm is mounted on the frame, and a first voice coil is provided at the bottom of the diaphragm;

[0007] A magnetic circuit assembly is connected to the centering support plate. The magnetic circuit assembly includes a yoke, a side magnet, a first center magnet, and a second center magnet. The side magnet and the first center magnet are installed on the top of the yoke, and the second center magnet is installed on the bottom of the yoke.

[0008] A bracket is installed at the bottom of the basket frame, and a second voice coil is provided on the bracket. Viewed from above, the second voice coil has a second center magnet located inside the second voice coil.

[0009] The magnetic circuit assembly is used to drive the first voice coil to vibrate, and the second voice coil is used to drive the magnetic circuit assembly to vibrate.

[0010] The beneficial effects of the present invention are as follows: The novel loudspeaker provided by the present invention movably mounts the magnetic circuit assembly in the frame through a centering support, and applies an Ampere force to the magnetic circuit assembly through the second voice coil, causing the magnetic circuit assembly to vibrate. The phase of the vibration generated is the same as that of the first voice coil, thereby avoiding the first voice coil jumping out of the magnetic gap due to excessive amplitude, which would cause the loudspeaker to distort. At the same time, since the vibration phase of the first voice coil and the magnetic circuit assembly is the same, the amplitude of the first voice coil will increase due to the action of the magnetic circuit assembly, thereby increasing the loudness of the loudspeaker and improving the acoustic performance of the loudspeaker. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the novel loudspeaker in Embodiment 1 of the present invention;

[0012] Figure 2 This is a cross-sectional view of the novel loudspeaker in Embodiment 1 of the present invention;

[0013] Figure 3 This is a schematic diagram of the internal structure of the novel loudspeaker in Embodiment 1 of the present invention;

[0014] Figure 4 This is a schematic diagram of the magnetic circuit assembly of the novel loudspeaker in Embodiment 1 of the present invention.

[0015] Label Explanation:

[0016] 1. Sink frame; 11. Centering support; 111. Elastic part; 112. Solder pad;

[0017] 2. Diaphragm; 21. First voice coil; 22. Center mount;

[0018] 3. Magnetic circuit assembly; 31. Yoke; 311. First connecting part; 32. Side magnet; 33. First center magnet; 34. Second center magnet; 35. Side washer; 351. Second connecting part; 36. Center washer;

[0019] 4. Support; 41. First support; 42. Second support;

[0020] 5. Second voice coil. Detailed Implementation

[0021] To explain in detail the technical content, objectives, and effects of the present invention, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0022] Please refer to Figures 1 to 4A novel loudspeaker includes a frame 1, a diaphragm 2, a magnetic circuit assembly 3, and a support 4. The frame 1 has a centering support 11. The diaphragm 2 is mounted on the frame 1, and a first voice coil 21 is located at the bottom of the diaphragm 2. The magnetic circuit assembly 3 is connected to the centering support 11. The magnetic circuit assembly 3 includes a yoke 31, a side magnet 32, a first center magnet 33, and a second center magnet 34. The side magnet 32 ​​and the first center magnet 33 are mounted on the top of the yoke 31, and the second center magnet 34 is mounted on the bottom of the yoke 31. The support 4 is mounted on the bottom of the frame 1, and a second voice coil 5 is mounted on the support 4. Viewed from above, the second center magnet 34 is located within the second voice coil 5. The magnetic circuit assembly 3 drives the first voice coil 21 to vibrate, and the second voice coil 5 drives the magnetic circuit assembly 3 to vibrate.

[0023] As can be seen from the above description, the beneficial effects of the present invention are as follows: The novel loudspeaker provided by the present invention has a magnetic circuit assembly movably mounted in the frame through a centering support, and applies an Ampere force to the magnetic circuit assembly through a second voice coil, causing the magnetic circuit assembly to vibrate, and the phase of the vibration generated is the same as that of the first voice coil. This avoids the first voice coil jumping out of the magnetic gap due to excessive amplitude, which would cause the loudspeaker to distort. At the same time, since the vibration phase of the first voice coil and the magnetic circuit assembly is the same, the amplitude of the first voice coil will increase due to the action of the magnetic circuit assembly, thereby increasing the loudness of the loudspeaker and improving the acoustic performance of the loudspeaker.

[0024] Furthermore, the support 4 is made of metal.

[0025] As can be seen from the above description, metal supports have higher structural strength.

[0026] Furthermore, the bracket 4 includes a first bracket 41 and a second bracket 42, the first bracket 41 and the second bracket 42 are not in contact, the second voice coil 5 is electrically connected to the first bracket 41 and the second bracket 42 respectively, and the second voice coil 5 is connected in parallel with the first voice coil 21.

[0027] As can be seen from the above description, the bracket is used to fix the second voice coil and also to enable the second voice coil to conduct.

[0028] Furthermore, the centering support 11 includes an elastic part 111 and a pad 112 connected together, the magnetic circuit assembly 3 is connected to the elastic part 111, and the first voice coil 21 is electrically connected to the pad 112.

[0029] As described above, the elastic part is used to support the magnetic circuit assembly, and the pad is used to conduct the first voice coil, so that the first voice coil is connected to the external power source.

[0030] Furthermore, the magnetic circuit assembly 3 also includes a side washer 35, which is mounted on the top of the side magnet 32, and the elastic part 111 is connected to the side washer 35.

[0031] Furthermore, the edge washer 35 is rectangular in shape, and the centering support 11 is not electrically connected to the edge washer 35.

[0032] As can be seen from the above description, compared with setting a separate edge washer for each edge magnet, the overall rectangular frame edge washer has higher structural strength, and the non-conductive connection between the centering support and the edge washer avoids short circuit of the first voice coil.

[0033] Furthermore, the centering support 11 is L-shaped, and the centering support 11 is connected to the adjacent two sides of the side washer 35.

[0034] As can be seen from the above description, the centering support plate, together with the adjacent two sides of the washer, can make the vibration of the magnetic circuit assembly more stable.

[0035] Furthermore, the yoke 31 is connected to the edge washer 35.

[0036] As can be seen from the above description, the connection between the yoke and the edge washer can increase the overall structural strength of the magnetic circuit assembly.

[0037] Furthermore, the yoke 31 is provided with a first connecting part 311, and the side washer 35 is provided with a second connecting part 351, wherein the first connecting part 311 is connected to the second connecting part 351.

[0038] As can be seen from the above description, the first connecting part and the second connecting part facilitate the connection between the yoke and the edge washer, and at the same time help to improve the connection strength of the face contact and avoid the connection from breaking due to long-term vibration.

[0039] Furthermore, a central washer 36 is provided on the second central magnet 34.

[0040] As can be seen from the above description, the central washer is used to conduct magnetism, making the magnetic field generated by the second central magnet more uniform.

[0041] Example 1

[0042] Please refer to Figures 1 to 4 Embodiment 1 of the present invention is: a novel speaker, which is applied to electronic devices such as mobile phones, speakers, smartwatches, tablet computers, and laptops.

[0043] The novel loudspeaker includes a frame 1, a diaphragm 2, a magnetic circuit assembly 3, and a support 4. The frame 1 has a centering support 11. The diaphragm 2 includes an inner fixing part, a surround part, and an outer fixing part connected sequentially from the inside out. The diaphragm 2 is mounted on the frame 1 via the outer fixing part. A first voice coil 21 is located at the bottom of the diaphragm 2 and is fixed to the inner fixing part. The magnetic circuit assembly 3 is connected to the centering support 11. The magnetic circuit assembly 3 includes a yoke 31, side magnets 32, a first center magnet 33, and a second center magnet 34. Multiple side magnets 32 are present. The side magnets 32 and the first center magnet 33 are mounted on top of the yoke 31. The first center magnet 33 is positioned between at least two opposing side magnets 32, forming a magnetic circuit gap between the first center magnet 33 and the side magnets 32. At least a portion of the first voice coil 21 is located within the magnetic circuit gap. The second center magnet 34... The bracket 4 is installed at the bottom of the yoke 31 and the support 4 is installed at the bottom of the frame 1. The support 4 is provided with a second voice coil 5. The second voice coil 5 is viewed from above. The second center magnet 34 is located inside the second voice coil 5. The magnetic circuit assembly 3 is used to drive the first voice coil 21 to vibrate. The second voice coil 5 is used to drive the magnetic circuit assembly 3 to vibrate. In this embodiment, the centering support 11 is installed on the frame 1 by injection molding. The inner fixing part is provided with a window in the middle. The window is a rounded rectangle. The inner fixing part is provided with a center sticker 22. The center sticker 22 covers the window and closes the window. Optionally, the center sticker 22 is connected to the inner fixing part by adhesive, injection molding or hot pressing. The second center magnet 34 is partially located inside the second voice coil 5. The side of the frame 1 is provided with a clearance groove for avoiding the side magnet 32, which helps to reduce the overall width of the speaker and make the structure of the new speaker more compact.

[0044] When the novel loudspeaker is powered on, the first voice coil 21 is energized and begins to vibrate under the action of the magnetic circuit gap formed by the first center magnet 33 and the side magnet 32. At the same time, the second voice coil 5 is also supplied with the same current as the electrical signal of the first voice coil 21, so that an alternating magnetic field is formed around the second voice coil 5. Since the magnetic circuit assembly 3 is mounted on the centering support 11, the second center magnet 34 located in the alternating magnetic field will be subjected to the Ampere force applied by the second voice coil 5 and begin to vibrate, driving the entire magnetic circuit assembly 3 to vibrate. Moreover, the vibration phase of the magnetic circuit assembly 3 is the same as the vibration phase of the first voice coil 21, thereby avoiding the first voice coil 21 from jumping out of the magnetic gap due to excessive amplitude, which would cause the loudspeaker to distort. Specifically, the vibration phase of the magnetic circuit assembly 3 can be adjusted to be the same as the vibration phase of the first voice coil 21 by adjusting the magnetic pole direction of the first center magnet 33 and the second center magnet 34 and adjusting the coil winding direction of the first voice coil 21 and the second voice coil 5.

[0045] Optionally, the support 4 is made of metal. In this embodiment, the support 4 includes a first support 41 and a second support 42. The first support 41 and the second support 42 are not in contact. The first support 41 and the second support 42 are respectively glued to both sides of the bottom of the basket frame 1. The second voice coil 5 is electrically connected to the first support 41 and the second support 42 respectively. The second voice coil 5 is connected in parallel with the first voice coil 21. In other embodiments, the second voice coil 5 and the first voice coil 21 may also be connected in series or controlled separately not to be connected to each other.

[0046] Please refer to Figure 3 The centering support 11 includes an elastic part 111 and a pad 112 connected together. The magnetic circuit assembly 3 is connected to the elastic part 111. The first voice coil 21 is electrically connected to the pad 112. In this embodiment, the elastic part 111 is an elastic sheet. The elastic part 111 is wavy. The elastic part 111 and the pad 112 are integrally formed. There are two centering supports 11. The pad 112 of one centering support 11 is electrically connected to the first bracket 41, and the pad 112 of the other centering support 11 is electrically connected to the second bracket 42. Obviously, in addition to installing and fixing the second voice coil 5, the bracket 4 is also used to realize the parallel connection between the second voice coil 5 and the first voice coil 21. Optionally, the first bracket 41 and the second bracket 42 are respectively welded to the pad 112 of the corresponding centering support 11.

[0047] The magnetic circuit assembly 3 also includes a side washer 35, which is mounted on the top of the side magnet 32. The elastic part 111 is connected to the side washer 35. In other embodiments, the elastic part 111 may also be connected to the yoke 31 or the side magnet 32.

[0048] Optionally, the edge washer 35 is rectangular. In this embodiment, the centering support 11 is not electrically connected to the edge washer 35, and the middle part of the elastic part 111 is connected to the side of the edge washer 35. In other embodiments, the number of edge washer 35 can also be set to multiple, and the number of edge washer 35 is the same as the number of edge magnets 32. Each edge magnet 32 ​​has one edge washer 35 installed on its top.

[0049] The centering support plate 11 is L-shaped and is connected to the adjacent two sides of the side washer 35. In this embodiment, each centering support plate 11 includes two interleaved pads 112 and two elastic parts 111. The suspended ends of the two pads 112 and the elastic parts 111 are fixedly installed on the basin frame 1. The two elastic parts 111 are perpendicular to each other. The two centering support plates 11 are respectively installed on two opposite corners of the basin frame 1. The two centering support plates 11 are centrally symmetrically arranged. The four elastic parts 111 of the two centering support plates 11 are respectively connected to the four sides of the side washer 35.

[0050] Please refer to Figure 4 Optionally, the yoke 31 is connected to the edge washer 35. In this embodiment, the yoke 31 is provided with a first connecting part 311, which is an upwardly bent edge. There are multiple first connecting parts 311. The edge washer 35 is provided with a second connecting part 351, which is a downwardly bent edge. The number of second connecting parts 351 is the same as that of the first connecting parts 311. The second connecting parts 351 and the first connecting parts 311 are arranged in a one-to-one correspondence. The first connecting parts 311 and the second connecting parts 351 are connected by adhesive. Specifically, there are four first connecting parts 311 and four second connecting parts 351. The four first connecting parts 311 are respectively arranged at the four corners of the yoke 31, and the four second connecting parts 351 are respectively arranged at the four corners of the edge washer 35. In other embodiments, the first connecting parts 311 and the second connecting parts 351 can also be connected by welding or other methods.

[0051] Please refer to Figure 2 The second central magnet 34 is provided with a central washer 36. In this embodiment, both the first central magnet 33 and the second central magnet 34 are provided with a central washer 36.

[0052] In summary, the novel loudspeaker provided by this invention movably mounts the magnetic circuit assembly within the frame via a centering support. An Ampere force is applied to the magnetic circuit assembly via a second voice coil, causing it to vibrate. The resulting vibration phase is the same as that of the first voice coil, thus preventing the first voice coil from jumping out of the magnetic gap due to excessive amplitude, which would cause speaker distortion. Simultaneously, because the first voice coil and the magnetic circuit assembly vibrate in the same phase, the magnetic circuit assembly's effect increases the amplitude of the first voice coil, thereby increasing the loudness of the loudspeaker and improving its acoustic performance. The support bracket not only fixes the second voice coil but also provides an electrical connection between the first and second voice coils. The centering support not only supports the magnetic circuit assembly but also conducts electricity to the first voice coil, connecting it to an external power source. The connection between the yoke and the washer increases the overall structural strength of the magnetic circuit assembly. The first and second connecting parts facilitate the connection between the yoke and the washer, while also improving the strength of the face contact and preventing breakage due to long-term vibration.

[0053] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent modifications made based on the content of the present invention specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A novel loudspeaker, characterized in that, include: A basin frame, wherein a centering support is provided on the basin frame, the centering support comprising a connected elastic portion and a solder pad; A diaphragm is mounted on the frame, and a first voice coil is provided at the bottom of the diaphragm, the first voice coil being electrically connected to the pad; A magnetic circuit assembly is movably disposed in the basin frame and connected to the elastic part. The magnetic circuit assembly includes a yoke, a side magnet, a first central magnet, and a second central magnet. The side magnet and the first central magnet are installed on the top of the yoke, and the second central magnet is installed on the bottom of the yoke. The bracket is made of metal and is installed at the bottom of the basket. The bracket has a second voice coil. The bracket includes a first bracket and a second bracket. The first bracket and the second bracket are not in contact. The second voice coil is electrically connected to the first bracket and the second bracket respectively. The second voice coil is connected in parallel with the first voice coil. Viewed from above, the second center magnet is located inside the second voice coil. The magnetic circuit assembly is used to drive the first voice coil to vibrate, and the second voice coil drives the magnetic circuit assembly to vibrate by applying an Ampere force to the magnetic circuit assembly. The first voice coil and the magnetic circuit assembly vibrate in phase.

2. The novel loudspeaker according to claim 1, characterized in that, The magnetic circuit assembly also includes a side washer, which is mounted on top of the side magnet, and the elastic part is connected to the side washer.

3. A novel loudspeaker according to claim 2, characterized in that, The edge washer is rectangular in shape, and the centering support is not electrically connected to the edge washer.

4. A novel loudspeaker according to claim 3, characterized in that, The centering support is L-shaped and is connected to both adjacent sides of the side washer.

5. A novel loudspeaker according to claim 2, characterized in that, The yoke is connected to the edge washer.

6. A novel loudspeaker according to claim 5, characterized in that, The yoke is provided with a first connecting part, and the side vane is provided with a second connecting part, and the first connecting part is connected to the second connecting part.

7. A novel loudspeaker according to claim 1, characterized in that, The second central magnet is equipped with a central washer.

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