WO2020019909A1

WO2020019909A1 - Loudspeaker unit, loudspeaker assembly and electronic device

Info

Publication number: WO2020019909A1
Application number: PCT/CN2019/092071
Authority: WO
Inventors: 欧阳灵; 严笔祥; 唐春树
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-07-27
Filing date: 2019-06-20
Publication date: 2020-01-30

Abstract

Provided is a loudspeaker unit, comprising a first vibrating diaphragm, a second vibrating diaphragm, a magnetic circuit assembly, a first coil and a second coil, wherein the magnetic circuit assembly is located between the first vibrating diaphragm and the second vibrating diaphragm, and the magnetic circuit assembly forms a first gap towards the first vibrating diaphragm and a second gap towards the second vibrating diaphragm; and the first coil is arranged inside the first gap and is fixed to the first vibrating diaphragm at one end, and the second coil is arranged inside the second gap and is fixed to the second vibrating diaphragm at one end. Further provided are a loudspeaker assembly and an electronic device. The present application can use the double-diaphragm loudspeaker unit to increase loudness.

Description

Speaker unit, speaker assembly and electronic equipment

Technical field

The present application relates to a speaker unit of an electronic device, and in particular, to a speaker unit, a speaker assembly, and an electronic device.

Background technique

At present, the speaker unit has only one diaphragm, which is limited by the material of the micro-speaker diaphragm. When the diaphragm displacement exceeds a certain amount, the distortion is large and noise may be generated. Certain limitations.

Summary of the Invention

The present application provides a speaker unit, a speaker assembly, and an electronic device, which can improve the loudness of the speaker.

The present application provides a speaker unit, which includes a first diaphragm, a second diaphragm, a magnetic circuit component, a first coil, and a second coil. The magnetic circuit component is located on the first diaphragm and the second oscillator. Between the membranes, the magnetic circuit assembly forms a first gap toward the first diaphragm and a second gap toward the second diaphragm, and the first coil is disposed in the first gap with one end fixed. On the first diaphragm, the second coil is disposed in the second gap and one end is fixed on the second diaphragm.

The present application provides a speaker assembly including a speaker unit and a power amplifier. The speaker unit includes a first diaphragm, a second diaphragm, a magnetic circuit assembly, a first coil, and a second coil. A component is located between the first diaphragm and the second diaphragm, and the magnetic circuit component forms a first gap toward the first diaphragm and a second gap toward the second diaphragm, the A first coil is disposed in the first gap and one end is fixed on the first diaphragm, the second coil is disposed in the second gap and one end is fixed on the second diaphragm, the The first coil and the second coil are both connected to the power amplifier.

The present application also provides an electronic device including a speaker assembly. The speaker assembly includes a speaker unit and a power amplifier. The speaker unit includes a first diaphragm, a second diaphragm, a magnetic circuit component, a first coil, and a second coil. The magnetic circuit component is located in the Between the first diaphragm and the second diaphragm, the magnetic circuit assembly forms a first gap toward the first diaphragm and a second gap toward the second diaphragm, and the first coil is disposed Within the first gap and one end is fixed on the first diaphragm, the second coil is disposed in the second gap and one end is fixed on the second diaphragm, the first coil and The second coils are all connected to the power amplifier.

A speaker unit, a speaker assembly, and an electronic device of the present application. The electronic device includes a speaker assembly. The speaker assembly includes a speaker unit and a power amplifier. The speaker unit includes a first diaphragm, a second diaphragm, A first coil and a second coil, the first coil and the second coil are respectively fixed on the first diaphragm and the second diaphragm, and the first coil and the second coil are both connected with The power amplifier is connected, and the power amplifier drives the first diaphragm and the second diaphragm to vibrate at the same time, which can increase the loudness.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings used in the embodiments are briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application. Technical personnel can obtain other drawings based on these drawings without paying any creative work.

FIG. 1 is a schematic diagram of a module of an electronic device according to an embodiment of the present application.

FIG. 2 is a schematic structural diagram of a speaker unit according to an embodiment of the present application.

FIG. 3 is a schematic diagram of a connection between a speaker unit and a power amplifier in an embodiment of the present application.

FIG. 4 is a schematic diagram of a connection between a speaker unit and a power amplifier in another embodiment of the present application.

detailed description

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are merely Examples of this application are part, but not all. Based on the embodiments in this application, all other embodiments obtained by a person of ordinary skill in the art without creative efforts should fall within the protection scope of this application.

The terms "first", "second", "third" and the like in the description and claims of the present application and the above-mentioned drawings are used to distinguish different objects and are not used to describe a specific order. The term "including" and any variations of them are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device containing a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to these processes, methods, products or equipment.

Please refer to FIG. 1, which is a schematic diagram of a module of an electronic device according to an embodiment of the present application. The electronic device 100 may be, but is not limited to, a mobile phone, a tablet computer, an electronic reader, a wearable electronic device, and the like. The electronic device 100 includes a speaker assembly 10. Those skilled in the art should understand that FIG. 1 is only an example of the electronic device 100, and does not constitute a limitation on the electronic device 100. The electronic device 100 may include more or Fewer components, or some components combined, or different components, for example, the electronic device 100 may further include an input-output device, a network access device, a data bus, and the like.

The speaker assembly 10 includes a speaker unit 1. Please refer to FIG. 2 together. FIG. 2 is a schematic structural diagram of a speaker unit according to an embodiment of the present application. The speaker unit 1 includes a first diaphragm 11, a second diaphragm 12, a magnetic circuit assembly 13, a first coil 14 and a second coil 15. The magnetic circuit assembly 13 is located between the first diaphragm 11 and the second diaphragm 12. The magnetic circuit assembly 13 forms a first gap 131 toward the first diaphragm 11 and a second gap 133 toward the second diaphragm 12. The first coil 14 is disposed in the first gap 131 and one end is fixed to the first diaphragm 11, and the second coil 15 is disposed in the second gap and one end is fixed to the second振膜 12 上.

In the present application, the speaker unit 1 includes a first diaphragm 11 and a second diaphragm 12. The first coil 11 and the second coil 12 can vibrate at the same time, thereby improving loudness. Compared with a single diaphragm speaker unit, the dual diaphragm speaker unit 1 of the present application has a larger space in terms of increasing loudness.

Specifically, the first coil 14 may be fixed to the first diaphragm 11 by gluing or other suitable methods, and the second coil 15 may be fixed to the second diaphragm by gluing or other suitable methods.振膜 12 上.

Specifically, the magnetic circuit assembly 13 includes a magnetic disk 135, a first magnet 137, and at least one second magnet 139. The conductive disk 135 is located between the first diaphragm 11 and the second diaphragm 12. The magnetic disk 135 includes a ring-shaped portion 1351 having a U-shaped cross section, and a ring-shaped flange portion 1353 extending vertically from the open end of the ring-shaped portion 1351 to the outside. A first receiving portion 1355 is formed inside the annular portion 1351. The first receiving portion 1355 faces the first diaphragm 11. A second receiving portion 1357 is formed between the flange portion 1353 and an outer wall of the annular portion 1351. The second receiving portion 1357 faces the second diaphragm 12. The first magnet 137 is received in the first receiving portion 1355 to form the first gap 131 in a ring shape. The at least one second magnet 139 is received in the second receiving portion 1357 to form the second gap 133 in a ring shape.

Specifically, the first magnet 137 is disposed on a bottom wall in the first receiving portion 1355. A first magnetic field (not shown) is formed between the first magnet 137 and an inner wall of the annular portion 1351. When the first coil 14 is disposed in the first gap 131, the first coil 14 is in the first magnetic field. When an alternating current is passed through the first coil 14, the first coil 14 receives the amperage of the first magnetic field and vibrates in the first magnetic field along the vertical direction, thereby driving the first coil. The diaphragm 11 vibrates.

Specifically, the at least one second magnet 139 is disposed on a side of the flange portion 1353 near the second diaphragm 12. A second magnetic field is formed between the at least one second magnet 139 and an outer wall of the annular portion 1351 and the flange portion 1353. When the second coil 15 is disposed in the second gap 133, the second coil 15 is in the second magnetic field. After an alternating current is passed in the second coil 15, the second coil 15 receives the amperage of the second magnetic field and vibrates in the second magnetic field in the vertical direction, thereby driving the second vibration. The film 12 vibrates.

The first diaphragm 11 and the second diaphragm 12 can thus vibrate at the same time, so that the loudness can be increased.

More specifically, in an embodiment, the at least one second magnet 139 includes one of the second magnets 139, and the second magnet 139 has a ring shape. The second magnet 139 surrounds the outer wall of the annular portion 1351 to form the second gap 133.

Further, in another embodiment, the at least one second magnet 139 includes at least two second magnets 139. The at least two second magnets 139 are in a circular arc shape. The at least two second magnets 139 surround the outer wall of the annular portion 1351 at intervals to form the second gap 133. In addition, the at least two second magnets 139 are on the same circumferential line with the center of the annular portion 1351 as a center.

More specifically, in an embodiment, the at least two second magnets 139 are symmetrically disposed on the same circumferential line centered on the center of the ring-shaped portion 1351.

Further, the speaker unit 1 further includes a bracket 16. The bracket 16 has a circular shape, and the bracket 16 is arranged around the magnetic circuit assembly 13, the first coil 14 and the second coil 15, and the first diaphragm 11 is overlapped and arranged at On the top end of the bracket 16, the second diaphragm 12 is overlapped and disposed on the bottom end of the bracket 16.

Further, the bracket 16 is provided with a ring-shaped sound hole 161 around its peripheral wall. The sound emitting hole 161 faces the second magnet 139 at a substantially middle position. The sound output hole 161 is used for deriving the sound generated by the vibration of the first diaphragm 11 and the second diaphragm 12.

Specifically, the upper surface of the flange portion 1353 of the guide disk 135 is substantially flush with the top of the first magnet 137, and the bottom of the annular portion 1351 of the guide disk 135 and the bottom of the second magnet 139 The top of the bracket 16 is substantially flush with the top surface of the flange portion 1353 of the guide disk 135 and the top of the first magnet 137. Therefore, the first diaphragm 11 and the guide disk 135 A gap exists between the upper surface of the flange portion 1353 and the top of the first magnet 137, and the gap forms a sound path A. The bottom end of the bracket 16 is lower than the bottom of the annular portion 1351 of the guide disk 135 and the bottom of the second magnet 139. Therefore, the second diaphragm 12 and the annular portion of the guide disk 135 A gap exists between the bottom of 1351 and the bottom of the second magnet 139, and the gap forms a sound path B. There is also a gap between the outer wall of the second magnet 139 and the inner wall of the bracket 16, and the gap forms a sound path C. The three sound-emitting paths A, B, and C are connected to each other, and are finally connected to the sound-emitting hole 161. Therefore, the sound generated by the vibration of the first diaphragm 11 and the second diaphragm 12 passes through the above. The sound emitting paths A, B, and C and the sound emitting hole 161 described above produce sound.

Further, please refer to FIG. 1 and FIG. 3 together. FIG. 3 is a schematic diagram of a connection between a speaker unit and an amplifier in an embodiment of the present application. The speaker assembly 10 further includes a power amplifier 2. The first coil 14 and the second coil 15 are both connected to the power amplifier 2. The power amplifier 2 drives the first coil 14 and the second coil 15 to vibrate simultaneously.

The dual-diaphragm speaker unit 1 of the present application only needs one power amplifier 2 to drive, so that one power amplifier 2 can be omitted. In the prior art, loudness is generally increased through a stereo or dual-speaker solution, that is, two loudspeakers with power or loudness and two power amplifiers are used to drive. In comparison, the dual-diaphragm speaker assembly 10 of the present application uses a power amplifier 2 to promote smaller space requirements and lower production costs.

Specifically, please refer to FIG. 3 together. FIG. 3 is a schematic diagram of a connection between a speaker unit and a power amplifier in an embodiment of the present application. In an embodiment, the positive electrode A1 of the first coil 14 and the positive electrode A2 of the second coil 15 are connected, and the negative electrode C1 of the first coil 14 and the negative electrode C2 of the second coil 15 are connected. , Respectively connected to the positive and negative poles of the power amplifier 2 to form the same phase vibration, so that the loudness can be greatly increased.

Specifically, please refer to FIG. 4 together. FIG. 4 is a schematic diagram of a connection between a speaker unit and a power amplifier in another embodiment of the present application. In another embodiment, the positive electrode A1 of the first coil 14 is connected to the negative electrode C2 of the second coil 15, and the negative electrode C1 of the first coil 14 is connected to the positive electrode A2 of the second coil 15. After that, they are respectively connected to the positive and negative poles of the power amplifier 2 to form anti-phase vibration, which can improve the radiation directivity.

A speaker unit, a speaker assembly, and an electronic device of the present application. The speaker assembly includes a speaker unit and a power amplifier. The speaker unit includes a second diaphragm, a first coil, and a second coil. The first coil and The second coil is fixed on the first diaphragm and the second diaphragm, respectively, the first diaphragm and the second diaphragm are electrically connected to the work, and the power amplifier pushes the first diaphragm The diaphragm and the second diaphragm vibrate at the same time, which can increase the loudness of the speaker. Compared with the stereo or dual speaker solution, it saves space requirements and the cost of an amplifier.

The above is the implementation of the embodiment of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the embodiment of the present application, several improvements and retouching can be made. These improvements and retouching also It is regarded as the protection scope of this application.

Claims

A speaker unit, characterized in that the speaker unit includes a first diaphragm, a second diaphragm, a magnetic circuit component, a first coil, and a second coil, and the magnetic circuit component is located on the first diaphragm. And the second diaphragm, the magnetic circuit component forms a first gap toward the first diaphragm and a second gap toward the second diaphragm, and the first coil is disposed at the first diaphragm Within one gap and one end is fixed on the first diaphragm, the second coil is disposed in the second gap and one end is fixed on the second diaphragm.
The speaker unit according to claim 1, wherein the magnetic circuit assembly includes a magnetic guide disk, a first magnet, and at least one second magnet, and the magnetic guide disk is located on the first diaphragm and the second magnet. Between the diaphragms, the magnetic disk includes a ring-shaped portion having a U-shaped cross-section and a flange portion extending perpendicularly from the open end of the ring-shaped portion to the outside, and a first accommodation is formed inside the ring-shaped portion. The first receiving portion faces the first diaphragm, a second receiving portion is formed between the flange portion and an outer wall of the annular portion, and the second receiving portion faces the second diaphragm The first magnet is received in the first receiving portion to form the first gap, and the at least one second magnet is received in the second receiving portion to form the second gap.
The speaker unit according to claim 2, wherein the at least one second magnet includes one of the second magnets, the second magnet is annular, and surrounds an outer wall of the ring portion. The second gap is formed.
The speaker unit according to claim 2, wherein the at least one second magnet comprises two of the second magnets, the two of the second magnets are in a circular arc shape, and the two of the second magnets are spaced apart An outer wall of the annular portion is grounded to form the second gap, and the two second magnets are on the same circumferential line centered on the center of the annular portion.
The speaker unit according to claim 4, wherein the two second magnets are symmetrically arranged on the same circumferential line centered on the center of the ring portion.
The speaker unit according to claim 1, wherein the diaphragm further comprises a support, and the support is disposed around the magnetic circuit assembly, the first coil, and the second coil, and the A first diaphragm is overlapped on the top end of the bracket, and a second diaphragm is overlapped on the bottom end of the bracket.
The speaker unit according to claim 6, wherein the bracket is provided with a ring-shaped sound emitting hole around a peripheral wall thereof.
A speaker assembly, characterized in that the speaker assembly includes a speaker unit and a power amplifier, and the speaker unit includes a first diaphragm, a second diaphragm, a magnetic circuit assembly, a first coil, and a second coil. A magnetic circuit component is located between the first diaphragm and the second diaphragm, and the magnetic circuit component forms a first gap toward the first diaphragm and a second gap toward the second diaphragm, The first coil is disposed in the first gap and one end is fixed on the first diaphragm, the second coil is disposed in the second gap and one end is fixed on the second diaphragm, The first coil and the second coil are both connected to the power amplifier.
The loudspeaker assembly according to claim 8, wherein the magnetic circuit assembly comprises a magnetic disk, a first magnet, and at least one second magnet, and the magnetic disk is located on the first diaphragm and the second vibration. Between the membranes, the guide disk includes a ring-shaped portion having a U-shaped cross-section and a flange portion extending vertically outward from an open end of the ring-shaped portion, and a first receiving portion is formed inside the ring-shaped portion. The first receiving portion faces the first diaphragm, a second receiving portion is formed between the flange portion and an outer wall of the annular portion, and the second receiving portion faces the second diaphragm, The first magnet is received in the first receiving portion to form the first gap, and the at least one second magnet is received in the second receiving portion to form the second gap.
The speaker assembly according to claim 9, wherein the at least one second magnet comprises one of the second magnets, the second magnet has a ring shape and surrounds an outer wall of the ring portion to form The second gap.
The speaker assembly according to claim 9, wherein the at least one second magnet comprises two of the second magnets, the two of the second magnets are in a circular arc shape, and the two of the second magnets are spaced apart. The second gap is formed around the outer wall of the annular portion, and the two second magnets are on the same circumferential line centered on the center of the annular portion.
The speaker assembly according to claim 11, wherein the two second magnets are symmetrically arranged on the same circumferential line centered on the center of the ring portion.
The speaker assembly according to claim 8, wherein the diaphragm further comprises a support, and the support is disposed around the magnetic circuit assembly, the first coil, and the second coil, and the first A diaphragm is overlapped on the top end of the bracket, and a second diaphragm is overlapped on the bottom end of the bracket.
The loudspeaker assembly according to claim 13, wherein the bracket is provided with a ring-shaped sound emitting hole around its peripheral wall.
The speaker assembly according to claim 8, wherein a positive electrode of the first coil and a positive electrode of the second coil are connected, and a negative electrode of the first coil and a negative electrode of the second coil are connected Is connected to the positive and negative poles of the power amplifier.
The speaker assembly according to claim 8, wherein the positive electrode of the first coil and the negative electrode of the second coil are connected, and the negative electrode of the first coil and the positive electrode of the second coil are connected Is connected to the positive and negative poles of the power amplifier.
An electronic device, characterized in that the electronic device includes a speaker assembly, the speaker assembly includes a speaker unit and a power amplifier, and the speaker unit includes a first diaphragm, a second diaphragm, a magnetic circuit component, a first A coil and a second coil, the magnetic circuit component is located between the first diaphragm and the second diaphragm, and the magnetic circuit component forms a first gap toward the first diaphragm and toward the first diaphragm A second gap of two diaphragms, the first coil is disposed in the first gap and one end is fixed on the first diaphragm, the second coil is disposed in the second gap and one end is fixed on On the second diaphragm, the first coil and the second coil are both connected to the power amplifier.
The electronic device according to claim 17, wherein the magnetic circuit assembly includes a magnetic guide disk, a first magnet, and at least one second magnet, and the magnetic guide disk is located on the first diaphragm and the second oscillator. Between the membranes, the guide disk includes a ring-shaped portion having a U-shaped cross-section and a flange portion extending vertically outward from an open end of the ring-shaped portion, and a first receiving portion is formed inside the ring-shaped portion. The first receiving portion faces the first diaphragm, a second receiving portion is formed between the flange portion and an outer wall of the annular portion, and the second receiving portion faces the second diaphragm, The first magnet is received in the first receiving portion to form the first gap, and the at least one second magnet is received in the second receiving portion to form the second gap.
The electronic device according to claim 17, wherein a positive electrode of the first coil and a positive electrode of the second coil are connected, and a negative electrode of the first coil and a negative electrode of the second coil are connected Is connected to the positive and negative poles of the power amplifier.
The electronic device according to claim 17, wherein a positive electrode of the first coil and a negative electrode of the second coil are connected, and a negative electrode of the first coil and a positive electrode of the second coil are connected Is connected to the positive and negative poles of the power amplifier.