A loudspeaker unit and an electronic device

Abstract

The present application discloses a loudspeaker unit and an electronic device. The loudspeaker unit includes: a first sound generating unit, including a magnetic circuit system and a first vibration system, the magnetic circuit system includes a first magnet, the first magnet is disposed on the connecting portion and forms a magnetic gap with the center post, the vibration system includes a first diaphragm and a first coil, one end of the first coil is connected to the first diaphragm, and the other end of the first coil is located in the magnetic gap; and a second sound generating unit, including a second coil and a second vibration system, the second coil is located in the accommodating cavity, the second vibration system includes a second diaphragm and a second magnet, the second diaphragm is disposed at the open end of the center post, the second magnet is disposed in the middle of the second diaphragm, and the second magnet is disposed opposite to the end of the second coil.

Description

Technical Field

[0001] The present application relates to the technical field of speakers, and more specifically, to a speaker unit and an electronic device. Background Art

[0002] In the prior art, a single moving coil speaker needs to process high, medium, and low frequencies simultaneously. Therefore, it cannot fully analyze complex and rich audio signals, and the sound quality will be significantly degraded. To make up for the single nature of the single moving coil speaker in processing audio information, using a dual moving coil can coordinate the processing of audio signals of different frequencies, and the resolution is stronger than that of a single moving coil.

[0003] The process requirements of a dual moving coil speaker are relatively high. Generally, magnetic gaps for the coil to vibrate are formed on both sides of the speaker frame, which will significantly increase the diameter of the speaker. And when the coil vibrates in the magnetic gap, the requirement for the vibration balance of the coil is relatively high to prevent phenomena such as polarization or roll vibration. In the prior art, to prevent the occurrence of this phenomenon, usually the way of increasing the magnetic gap is adopted to avoid the generation of this phenomenon, which will further increase the diameter of the speaker. The structure of the traditional dual moving coil speaker makes the cost of producing the dual moving coil speaker significantly increase, and the too large diameter also does not conform to the trend of product miniaturization, which will reduce the sound effect of the speaker.

[0004] Therefore, there is an urgent need to provide a new technical solution to solve the above technical problems. Summary of the Invention

[0005] An object of the present application is to provide a new technical solution for a speaker unit.

[0006] According to the first aspect of the present application, there is provided a speaker unit. The speaker unit includes:

[0007] A speaker frame, the speaker frame includes a central column and a connecting portion, an accommodating cavity with one end open is arranged inside the central column, the connecting portion is arranged around the central column, and the connecting portion is connected to the open end of the central column;

[0008] A first sound generating unit, including a magnetic circuit system and a first vibration system, the magnetic circuit system includes a first magnet, the first magnet is arranged on the connecting portion and forms a magnetic gap with the central column, the vibration system includes a first diaphragm and a first coil, one end of the first coil is connected to the first diaphragm, and the other end of the first coil is located in the magnetic gap; and

[0009] The second sound generating unit includes a second coil and a second vibration system. The second coil is located in the accommodation cavity. The second vibration system includes a second diaphragm and a second magnet. The second diaphragm is disposed at the open end of the central column, and the second magnet is disposed in the middle of the second diaphragm. The second magnet is disposed opposite to the end of the second coil.

[0010] Optionally, it further includes a housing. The chassis, the first sound generating unit, and the second sound generating unit are located in the housing. The housing includes a fixing portion and an extending portion. The extending portion protrudes from one end of the fixing portion to form a stepped structure. The first magnet is disposed inside the fixing portion, and the first diaphragm is connected to the bottom of the extending portion.

[0011] Optionally, the housing further includes a front cover. The front cover is disposed at the bottom end of the fixing portion. Sound outlet holes are provided on the front cover, and the central column is opposite to the sound outlet holes.

[0012] Optionally, a support column extends from the bottom of the central column into the accommodation cavity, and the second coil is wound around the support column.

[0013] Optionally, a first through hole is formed inside the support column;

[0014] One end of the first through hole communicates with the accommodation cavity, and the other end penetrates out from the bottom of the central column.

[0015] Optionally, a plurality of second through holes are formed on the connecting portion, and the plurality of second through holes are distributed along the circumferential direction of the connecting portion;

[0016] Under the condition that the first diaphragm vibrates, the vibrating air flow is transmitted to the sound outlet holes through the second through holes.

[0017] Optionally, it further includes a support ring. The support ring is disposed inside the fixing portion and on the top of the first magnet, and the first diaphragm is connected to the support ring.

[0018] Optionally, a sound leakage hole is provided on the extending portion, and the sound leakage hole is located in the middle of the extending portion.

[0019] Optionally, a second gap is formed between the outer wall of the support column and the inner wall of the central column. The radial dimension of the second gap is larger than the radial dimension of the magnetic gap, and the radial dimension of the second coil is larger than the radial dimension of the first coil.

[0020] According to the second aspect of the present application, an electronic device is provided. The electronic device includes: the above-mentioned loudspeaker unit.

[0021] In the embodiments of the present disclosure, by separately providing a first sound - generating unit and a second sound - generating unit, where the first sound - generating unit serves as a full - frequency unit and the second sound - generating unit serves as a high - frequency unit, it is possible to enable the loudspeaker unit to analyze signals of different frequencies, thereby improving the sound - generating effect of the loudspeaker unit.

[0022] In addition, in this embodiment, by fixedly arranging the second coil in the accommodation cavity of the central column, directly fixing the second diaphragm at the open end of the central column, and providing a second magnet in the middle of the second diaphragm, when the second coil is energized, the second magnet can directly drive the second diaphragm to vibrate effectively, without separately providing a magnetic gap to drive the second diaphragm to vibrate with the second coil. This avoids the problem that a separately provided magnetic gap increases the diameter of the loudspeaker, and at the same time, it can also reduce the requirements for the vibration balance of the second sound - generating unit, effectively improving the sound - generating effect. The second magnet can also serve as the dome of the second diaphragm, thereby reducing the splitting vibration of the second diaphragm, adjusting the acoustic performance, and enhancing the ductility and smoothness of high - frequency sound generation.

[0023] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present invention and, together with the description, are used to explain the principles of the present invention.

[0025] Figure 1 is a schematic diagram of a loudspeaker unit according to an embodiment of the present disclosure.

[0026] Figure 2 is an exploded view of a loudspeaker unit according to an embodiment of the present disclosure.

[0027] Figure 3 is a perspective view of a loudspeaker unit according to an embodiment of the present disclosure.

[0028] DESCRIPTION OF REFERENCE NUMERALS:

[0029] 1, chassis; 11, central column; 112, support column; 1121, first through - hole; 21, connecting part; 211, second through - hole; 3, first magnet; 4, first diaphragm; 5, first coil; 6, second magnet; 7, second diaphragm; 8, second coil; 9, housing; 91, fixing part; 92, extending part; 921, sound - leakage hole; 93, front cover; 931, sound - output hole; 10, support ring; 12, second gap; 13, washer; 14, magnetic gap. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way a limitation on the present application or its application or use.

[0032] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0033] In all examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0035] According to an embodiment of the present disclosure, as Figures 1 - 3 shown, a loudspeaker unit is provided. The loudspeaker unit includes: a chassis 1, a first sound generating unit, and a second sound generating unit.

[0036] The chassis 1 includes a central column 11 and a connecting portion 21. An accommodation cavity with one end open is provided inside the central column 11. The connecting portion 21 is disposed around the central column 11, and the connecting portion 21 is connected to the open end of the central column 11;

[0037] The first sound generating unit includes a magnetic circuit system and a first vibration system. The magnetic circuit system includes a first magnet 3. The first magnet 3 is disposed on the connecting portion 21 and forms a magnetic gap 14 with the central column 11. The vibration system includes a first diaphragm 4 and a first coil 5. One end of the first coil 5 is connected to the first diaphragm 4, and the other end of the first coil 5 is located in the magnetic gap 14; and

[0038] The second sound generating unit includes a second coil 8 and a second vibration system. The second coil 8 is located in the accommodation cavity. The second vibration system includes a second diaphragm 7 and a second magnet 6. The second diaphragm 7 is disposed at the open end of the central column 11. The second magnet 6 is disposed in the middle of the second diaphragm 7, and the second magnet 6 is disposed opposite to the end of the second coil 8.

[0039] It should be noted that the working principle of the speaker is that the energized coil vibrates under the action of the Ampere force in the magnetic field formed by the permanent magnet, and the vibration of the coil drives the diaphragm to vibrate. Its energy conversion method is electrical energy - mechanical energy - sound energy. The conductive coil moves within the magnetic field, the vibrating coil drives the diaphragm to vibrate, and the diaphragm drives the air to produce sound.

[0040] In this embodiment, the chassis 1 includes a central column 11 and a connecting portion 21. An accommodating cavity with one end open is provided inside the central column 11. The connecting portion 21 is arranged around the central column 11, and the connecting portion 21 is connected to the open end of the central column 11. The chassis 1 is used to fix the first magnet 3 and has the function of concentrating magnetic lines of force. For example, the material of the chassis 1 is stainless steel. The chassis 1 is integrally formed by stamping.

[0041] The magnetic circuit system includes a first magnet 3. The first magnet 3 is arranged on the connecting portion 21 and forms a magnetic gap 14 with the central column 11. The vibration system includes a first diaphragm 4 and a first coil 5. One end of the first coil 5 is connected to the first diaphragm 4, and the other end of the first coil 5 is located within the magnetic gap 14.

[0042] For example, the first magnet 3 is an annular magnet. The first magnet 3 is a ferrite magnet, a neodymium iron boron magnet, etc. The first sound generating unit serves as a full-frequency unit and is used to process mid-low frequency signals. When the first coil 5 is energized, the first coil 5 vibrates under the action of the Ampere force in the magnetic field formed by the first magnet 3, and the first coil 5 drives the first diaphragm 4 to vibrate, thereby generating sound. For example, the first diaphragm 4 is a folded-ring diaphragm or a planar diaphragm.

[0043] The second coil 8 is located within the accommodating cavity. The second vibration system includes a second diaphragm 7 and a second magnet 6. The second diaphragm 7 is arranged at the open end of the central column 11. The second magnet 6 is arranged in the middle of the second diaphragm 7, and the second magnet 6 is arranged opposite to the end of the second coil 8.

[0044] The second sound generating unit serves as a high-frequency unit and is used to process high-frequency signals. When the second coil 8 is energized, the second magnet 6 fixed on the second diaphragm 7 drives the second diaphragm 7 to vibrate under the action of the Ampere force.

[0045] The second diaphragm 7 is arranged at the open end of the central column 11. The second magnet 6 is arranged in the middle of the second diaphragm 7, and the second magnet 6 is arranged opposite to the end of the second coil 8. For example, the second diaphragm 7 is a folded-ring diaphragm. The folded-ring diaphragm includes a central portion, a folded-ring portion arranged around the central portion, and an edge portion arranged around the folded-ring portion. The second magnet 6 is bonded to the central portion with glue. This enables the second sound generating unit to process the high-frequency signal well and emit a sound with high quality.

[0046] In addition, the second magnet 6 is fixed to the second diaphragm 7. The second magnet 6 is a ferrite magnet, a neodymium iron boron magnet, etc. The second magnet 6 has a block or sheet structure and has high structural strength, so it can be used as a dome, thereby reducing the splitting vibration of the second diaphragm 7, adjusting the acoustic performance, and improving the ductility and smoothness of high-frequency sound emission. In order to reduce the mass of the vibration system and improve the sound emission effect, it is required that the second magnet 6 has high rigidity and low weight.

[0047] Optionally, the second magnet 6 can also be a magnetic coating or a thin and light magnet sheet.

[0048] For example, the first diaphragm 4 and the second diaphragm 7 are arranged back to back, and their vibrations do not interfere with each other. By setting the sound generating structure, the sound wave radiation directions of the first sound generating unit and the second sound generating unit are the same to meet the listening needs of users.

[0049] In the embodiment of the present disclosure, by separately setting the first sound generating unit and the second sound generating unit, wherein the first sound generating unit is used as a full-frequency unit and the second sound generating unit is used as a high-frequency unit, the loudspeaker unit can analyze different frequency signals, and thus the sound emission effect of the loudspeaker unit can be improved.

[0050] In addition, in this embodiment, by fixedly arranging the second coil in the accommodation cavity of the central column, directly fixing the second diaphragm to the open end of the central column, and arranging a second magnet in the middle of the second diaphragm, when the second coil is energized, the second magnet can directly drive the second diaphragm to vibrate effectively, without separately arranging a magnetic gap to drive the second diaphragm to vibrate by the second coil, avoiding the problem that the separately arranged magnetic gap increases the diameter of the loudspeaker, and at the same time, the requirement for the vibration balance of the second sound generating unit can be reduced, effectively improving the sound emission effect. The second magnet can also be used as the dome of the second diaphragm, thereby reducing the splitting vibration of the second diaphragm, adjusting the acoustic performance, and improving the ductility and smoothness of high-frequency sound emission.

[0051] In one example, as Figures 1 - 3 shown, the loudspeaker unit further includes a housing 9, a chassis 1, a first sound generating unit and a second sound generating unit are located inside the housing 9, the housing 9 includes a fixing portion 91 and an extending portion 92, the extending portion 92 protrudes from one end of the fixing portion 91 to form a stepped structure, the first magnet 3 is arranged inside the fixing portion 91, and the first diaphragm 4 is connected to the bottom of the extending portion 92.

[0052] For example, the loudspeaker unit further includes a housing 9. The housing 9 is used to house and fix the chassis 1, the first sound generating unit and the second sound generating unit.

[0053] In this embodiment, the fixing portion 91 and the extending portion 92 form a stepped structure, increasing the space inside the housing 9 for the first sound generating unit and the second sound generating unit, so as to increase the vibrating sound generating area of the first vibration system and the second vibration system, thereby improving the sound generating effect of the speaker unit. For example, the loudness range of the speaker sound is improved.

[0054] In one example, as Figure 1 、 Figure 3 shown, the housing 9 further includes a front cover 93, the front cover 93 is disposed at the bottom end of the fixing portion 91, and a sound outlet hole 931 is provided on the front cover 93, and the central column 11 is opposite to the sound outlet hole 931.

[0055] For example, the housing 9 further includes a front cover 93, and the front cover 93 cooperates with the fixing portion 91 and the extending portion 92 to form a protective housing 9. The front cover 93 is provided with a sound outlet hole for the sound to be emitted. The central column 11 is opposite to the sound outlet hole 931, so that under the condition that the first sound generating unit and the second sound generating unit generate sound, the first diaphragm 4 and the second vibration can uniformly drive the air to generate sound, and the sound can be concentratedly emitted from the sound outlet hole, which is beneficial to improving the sound generating effect of the speaker unit.

[0056] In one example, as Figure 1 、 Figure 3 shown, a support column 112 is formed by extending the bottom of the central column 11 into the accommodation cavity, and the second coil 8 is wound around the support column 112.

[0057] In this embodiment, the second coil 8 is wound around the support column 112, so that the second coil 8 can be stably and effectively fixed in the accommodation cavity of the central column 11, and the support column 112 provides an effective installation position for the second coil 8, improving the effectiveness of the speaker unit in generating sound.

[0058] In one example, as Figure 1 、 Figure 3 shown, a first through hole 1121 is formed inside the support column 112;

[0059] One end of the first through hole 1121 communicates with the accommodation cavity, and the other end passes through the bottom of the central column 11.

[0060] For example, a first through hole 1121 is formed inside the support column 112. Under the condition that the second sound generating unit generates sound, the first through hole 1121 can reduce the vibration resistance of the second diaphragm 7 and adjust the acoustic performance. The first through hole 1121 communicates with the accommodation cavity with a certain space, playing a role in expanding the capacity.

[0061] In one example, as Figure 1 、 Figure 3As shown, a plurality of second through-holes 211 are formed on the connecting portion 21, and the plurality of second through-holes 211 are distributed along the circumferential direction of the connecting portion 21;

[0062] Under the condition that the first diaphragm 4 vibrates, the vibrating air flow is transmitted to the sound outlet hole 931 through the second through-holes 211.

[0063] For example, a plurality of second through-holes 211 are formed on the connecting portion 21 of the speaker frame 1. The second through-holes 211 can, under the condition that the first diaphragm 4 vibrates, enable the vibrating air flow to be transmitted to the sound outlet hole 931 through the second through-holes 211 and be emitted through the sound outlet hole 931. The arrangement of the second through-holes 211 ensures the effective sound emission of the first sound generating unit.

[0064] In one example, as Figure 1 、 Figure 3 shown, the speaker unit further includes a support ring 10, the support ring 10 is arranged inside the fixing portion 91 and located on the top of the first magnet 3, and the first diaphragm 4 is connected to the support ring 10.

[0065] For example, the support ring 10 is arranged inside the fixing portion 91 and located on the top of the first magnet 3, and the first diaphragm 4 is connected to the support ring 10. The support ring 10 provides an effective and stable mounting position for the first diaphragm 4, and thus can enable the first diaphragm 4 to vibrate effectively and stably, improving the sound emission effect of the speaker unit.

[0066] In one example, as Figure 1 shown, a washer 13 is further arranged between the first magnet 3 and the support ring 10. The washer 13 can correct the magnetic lines of force emitted by the first magnet 3.

[0067] In one example, as Figures 1 - 3 shown, a sound leakage hole 921 is arranged on the extension portion 92, and the sound leakage hole 921 is located in the middle of the extension portion 92.

[0068] For example, a sound leakage hole 921 is arranged on the extension portion 92, and the sound leakage hole 921 can reduce the vibration resistance of the first diaphragm 4, adjust the acoustic performance, and play a role in volume expansion.

[0069] The sound leakage hole 921 is arranged in the middle of the extension portion 92, so that the vibration resistance of the first diaphragm 4 can be reduced evenly, enabling the first diaphragm 4 to vibrate effectively and stably, and improving the sound emission effect of the speaker unit.

[0070] In one example, as Figure 1 shown, a second gap 12 is formed between the outer wall of the support column 112 and the inner wall of the central column 11. The radial dimension of the second gap 12 is larger than the radial dimension of the magnetic gap 14, and the radial dimension of the second coil 8 is larger than the radial dimension of the first coil 5.

[0071] For example, the radial dimension of the second gap 12 is greater than that of the magnetic gap 14, and the radial dimension of the second coil 8 is greater than that of the first coil 5.

[0072] This can expand the vibration space of the second coil 8 in the second sound generating unit on the premise of ensuring the effective vibration of the first coil 5 in the first sound generating unit. At the same time, the radial dimension of the second coil 8 is also greater than that of the first coil 5, so that the second coil 8 can provide a greater driving force to drive the second diaphragm 7 to vibrate effectively.

[0073] According to another embodiment of the present disclosure, an electronic device is provided. The electronic device includes the above-mentioned speaker unit.

[0074] For example, the electronic device can be a mobile phone, a computer, a tablet, a smart bracelet, etc., which is not limited here, and those skilled in the art can select according to actual needs.

[0075] In the embodiments of the present disclosure, by separately arranging the first sound generating unit and the second sound generating unit, where the first sound generating unit is used as a full-frequency unit and the second sound generating unit is used as a high-frequency unit, this can enable the speaker unit to analyze different frequency signals, and thus improve the sound generation effect of the speaker unit.

[0076] In addition, in this embodiment, the second coil is fixedly arranged in the accommodating cavity of the central column, the second diaphragm is directly fixed at the open end of the central column, and a second magnet is arranged in the middle of the second diaphragm. In this way, when the second coil is energized, the second magnet can directly drive the second diaphragm to vibrate effectively, without separately arranging a magnetic gap to drive the second diaphragm to vibrate by the second coil, avoiding the problem that the separately arranged magnetic gap increases the diameter of the speaker, and at the same time, the requirement for the vibration balance of the second sound generating unit can also be reduced, effectively improving the sound generation effect. The second magnet can also serve as the dome of the second diaphragm, thereby reducing the splitting vibration of the second diaphragm, adjusting the acoustic performance, and enhancing the ductility and smoothness of high-frequency sound generation.

[0077] In the above embodiments, the differences between the embodiments are mainly described. As long as the different optimization features between the embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, it will not be elaborated here.

[0078] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A loudspeaker unit, characterized in that, Comprising: A basin frame, the basin frame includes a central column and a connecting portion, an accommodating cavity with one end open is arranged inside the central column, the connecting portion is arranged around the central column, and the connecting portion is connected to the open end of the central column; A first sound generating unit, including a magnetic circuit system and a first vibration system, the magnetic circuit system includes a first magnet, the first magnet is arranged on the connecting portion and forms a magnetic gap with the central column, the vibration system includes a first diaphragm and a first coil, one end of the first coil is connected to the first diaphragm, and the other end of the first coil is located in the magnetic gap; And A second sound generating unit, including a second coil and a second vibration system, the second coil is located in the accommodating cavity, the second vibration system includes a second diaphragm and a second magnet, the second diaphragm is arranged at the open end of the central column, the second magnet is arranged in the middle of the second diaphragm, and the second magnet is arranged opposite to the end of the second coil; The radial dimension of the second coil is larger than the radial dimension of the first coil.

2. The loudspeaker unit according to claim 1, characterized in that, It further includes a housing, the basin frame, the first sound generating unit and the second sound generating unit are located inside the housing, the housing includes a fixing portion and an extending portion, the extending portion protrudes from one end of the fixing portion to form a stepped structure, the first magnet is arranged inside the fixing portion, and the first diaphragm is connected to the bottom of the extending portion.

3. The loudspeaker unit according to claim 2, wherein, The housing further includes a front cover, the front cover is arranged at the bottom end of the fixing portion, and a sound outlet hole is arranged on the front cover, and the central column is opposite to the sound outlet hole.

4. The loudspeaker unit according to claim 3, wherein A support column is formed by extending the bottom of the central column into the accommodating cavity, and the second coil is wound around the support column.

5. The loudspeaker unit according to claim 4, characterized in that, A first through hole is formed inside the support column; One end of the first through hole communicates with the accommodating cavity, and the other end passes through the bottom of the central column.

6. The loudspeaker unit according to claim 3, characterized in that, A plurality of second through holes are formed on the connecting portion, and the plurality of second through holes are distributed along the circumferential direction of the connecting portion; Under the condition that the first diaphragm vibrates, the vibrating air flow is transmitted to the sound outlet hole through the second through holes.

7. The loudspeaker unit according to claim 2, wherein It further includes a support ring, the support ring is arranged inside the fixing portion and is located on the top of the first magnet, and the first diaphragm is connected to the support ring.

8. The loudspeaker unit according to claim 2, wherein A sound leakage hole is arranged on the extending portion, and the sound leakage hole is located in the middle of the extending portion.

9. The loudspeaker unit according to claim 4, wherein A second gap is formed between the outer wall of the support column and the inner wall of the central column, and the radial dimension of the second gap is larger than the radial dimension of the magnetic gap.

10. An electronic device, characterized in that, Including the loudspeaker unit according to any one of claims 1-9.

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