CN116600238A

CN116600238A - Speaker subassembly and electronic equipment

Info

Publication number: CN116600238A
Application number: CN202310888285.6A
Authority: CN
Inventors: 刘金华
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2023-08-15

Abstract

The application discloses a loudspeaker assembly and electronic equipment, wherein the loudspeaker assembly comprises a shell, and a first sound outlet and a second sound outlet are arranged on the shell; the first loudspeaker is arranged in the shell and comprises a first vibrating diaphragm capable of vibrating along a first direction, a first sound cavity is formed between the first vibrating diaphragm and the shell, and the first sound cavity is communicated with the first sound outlet; the second loudspeaker is arranged in the shell and comprises a second vibrating diaphragm capable of vibrating along the first direction, a second sound cavity is formed between the second vibrating diaphragm and the shell, and the second sound cavity is communicated with the second sound outlet; the first loudspeaker and the second loudspeaker are arranged side by side along a second direction, and the second direction is perpendicular to the first direction. Thereby realizing the problem of avoiding the loudspeaker from leaking sound in the thinner electronic equipment.

Description

Speaker subassembly and electronic equipment

Technical Field

The present application relates to the field of terminal technologies, and in particular, to a speaker assembly and an electronic device.

Background

The loudspeaker is used as a common electroacoustic transducer and widely applied to various electronic devices (such as mobile phones, computers and other terminals).

Mobile terminals, however, are portable electronic devices, and are often designed with a full screen due to consumer demands of users. The opening (i.e. the sound outlet) that results in the speaker is typically placed at the top of the center frame above the screen. When a user holds the mobile terminal to make a call, the sound outlet is not attached to the ear side of the user, but transmits sound waves upwards, and the sound outlet is far away from the auricle. Therefore, when the playing volume of the speaker is large, the conversation content can leak to the nearby crowd and be heard by others, so that the conversation privacy protection is poor.

In some embodiments, the sound wave which can be offset can be emitted by using the double-sided sounding loudspeaker assembly, so that the leakage sound generated by the sound outlet at the top of the middle frame can be reduced, and the volume of the sound outlet at the top of the screen can be increased.

However, the above-mentioned double-sided sounding speaker assembly is formed by stacking two speakers with opposite diaphragms along the thickness direction of the electronic device, so that the speaker assembly has a large thickness and cannot be applied to thinner electronic devices.

Therefore, how to reduce the sound leakage phenomenon in a thinner electronic device becomes a problem to be solved.

Disclosure of Invention

The application provides a loudspeaker assembly and electronic equipment, which can solve the problem that the loudspeaker cannot be prevented from leaking in thinner electronic equipment in the prior art.

To solve the above technical problem, in a first aspect, an embodiment of the present application provides a speaker assembly, including: the shell is provided with a first sound outlet and a second sound outlet; the first loudspeaker is arranged in the shell and comprises a first vibrating diaphragm capable of vibrating along a first direction, a first sound cavity is formed between the first vibrating diaphragm and the shell, and the first sound cavity is communicated with a first sound outlet; the second loudspeaker is arranged in the shell and comprises a second vibrating diaphragm capable of vibrating along the first direction, a second sound cavity is formed between the second vibrating diaphragm and the shell, and the second sound cavity is communicated with a second sound outlet; the first loudspeaker and the second loudspeaker are arranged side by side along a second direction, and the second direction is perpendicular to the first direction.

It will be appreciated that the first direction (i.e., X-direction hereinafter) is the thickness direction of the electronic device housing the speaker assembly, and the second direction (i.e., Z-direction hereinafter) is the width direction of the electronic device housing the speaker assembly, and that the first speaker and the second speaker in the speaker assembly may be disposed side by side along the width direction of the electronic device, rather than stacked back-to-back along the thickness direction, so that the speaker assembly may be applied to thinner electronic devices. And, first speaker and second speaker set up in the casing, form first sound chamber and the second sound chamber that sets up side by side along width direction, through the air in vibration first sound chamber and the second sound chamber, easily construct dipole sound field. This makes thinner electronic devices also possible to construct dipole sound fields, reduce far-field sound volume, and achieve leakage prevention.

In a possible implementation of the first aspect, the housing includes a first housing wall located at one end of the housing along a first direction; the first vibrating diaphragm is positioned on one side of the first loudspeaker facing the first shell wall along the first direction, and the second vibrating diaphragm is positioned on one side of the second loudspeaker facing the first shell wall.

I.e. the diaphragms of the first loudspeaker and the second loudspeaker are both directed towards the first housing wall and in a first direction towards one end of the housing.

In a possible implementation of the first aspect, the first diaphragm and the second diaphragm are aligned along the second direction.

I.e. the first diaphragm and the second diaphragm are aligned in a second direction, i.e. the Z-direction hereinafter.

In a possible implementation of the first aspect, the housing includes a first housing, and the first housing wall is located on the first housing; the loudspeaker assembly also comprises a supporting plate arranged in the shell, and the first shell is covered on the supporting plate along the first direction and forms a cavity together with the supporting plate; the speaker assembly further includes a partition plate disposed in the cavity, the partition plate dividing the cavity into a first cavity and a second cavity along a second direction, and dividing the support plate into a first portion and a second portion, the first portion and the second portion corresponding to the first cavity and the second cavity, respectively; the first vibrating diaphragm is arranged on the surface of the first part of the supporting plate, which faces the first shell wall, and a first sound cavity is formed between the first vibrating diaphragm and the first shell wall; the second vibrating diaphragm is arranged on the surface of the second part of the supporting plate, which faces the first shell wall, and a second sound cavity is formed between the second vibrating diaphragm and the first shell wall.

I.e. a cavity enclosed by the first housing and the support plate, is divided into a first cavity and a second cavity in the Z-direction by a dividing plate in the cavity, and the dividing plate is also divided into a first part and a second part. Lay first vibrating diaphragm in the first part of backup pad, the second vibrating diaphragm is laid in the second part of backup pad for first vibrating diaphragm and first shell wall encapsulation are first sound chamber, and first sound chamber corresponds with first cavity. And the second vibrating diaphragm and the first shell wall are packaged into a second sound cavity, and the second sound cavity corresponds to the second cavity. The first vibrating diaphragm can drive air in the first sound cavity to emit sound waves, and the second vibrating diaphragm can drive air in the second sound cavity to emit sound waves, so that a dipole sound field is conveniently constructed.

In a possible implementation manner of the first aspect, the first diaphragm and the second diaphragm are configured as a single unit, and/or the support plate is configured as a single unit.

That is, the first diaphragm and the second diaphragm may be an integral diaphragm, and the first portion and the second portion in the support plate may be connected to form an integral structure, for example, the first portion and the second portion may be connected to form an integral structure through the connection portion. In some embodiments, the integral type vibrating diaphragm membrane can lay in the backup pad of integral type, forms the first vibrating diaphragm that can vibrate alone and can vibrate alone the second vibrating diaphragm, has effectively simplified the encapsulation step of speaker subassembly, has promoted the yield of encapsulation production line.

In a possible implementation manner of the first aspect, a surface of the first diaphragm is provided with a first reinforcing member; and/or the surface of the second vibrating diaphragm is provided with a second reinforcing piece.

I.e. the surface of the first diaphragm and the surface of the second diaphragm may be provided with stiffening members. The first reinforcement piece can be arranged in the central area of the surface of the first vibrating diaphragm, and the second reinforcement piece can be arranged in the central area of the surface of the second vibrating diaphragm, so that noise generated by the first vibrating diaphragm and the second vibrating diaphragm during high-frequency vibration is effectively reduced.

In a possible implementation of the first aspect, the housing includes a first side wall and a second side wall disposed opposite to each other along a third direction, and the third direction is perpendicular to the first direction and the second direction; the first sound outlet and the second sound outlet are arranged on the first side wall at intervals along the second direction.

Namely along the Y direction, the shell comprises a first side wall and a second side wall which are oppositely arranged, and a first sound outlet and a second sound outlet are arranged on the first side wall at intervals along the Z direction. In some embodiments, the first sound outlet and the second sound outlet are separately arranged, so that the first sound outlet and the second sound outlet can respectively emit sound waves, and a dipole sound field is conveniently constructed.

In one possible implementation manner of the first aspect, the first portion of the support plate includes a first hollow structure, and the first diaphragm covers the first hollow structure along the first direction; the second part of the support plate comprises a second hollow structure, and the second vibrating diaphragm covers the second hollow structure along the first direction; the first loudspeaker comprises a first voice coil, wherein the first voice coil is movably arranged in the first hollow structure and is used for driving the first vibrating diaphragm to vibrate along a first direction; the second loudspeaker comprises a second voice coil, and the second voice coil is movably arranged in the second hollow structure and used for driving the second vibrating diaphragm to vibrate along the first direction.

That is, a first hollowed-out structure in a first portion of the support plate may be used to limit the first voice coil to reciprocate in the X-direction, and a second hollowed-out structure in a second portion of the support plate may be used to limit the second voice coil to reciprocate in the X-direction. The first vibrating diaphragm covers the first hollow structure along the X direction and is connected with the first voice coil; the second vibrating diaphragm covers the second hollow structure along the X direction and is connected with the second voice coil. The first voice coil can drive the first vibrating diaphragm to reciprocate along the X direction, and the second voice coil can drive the second vibrating diaphragm to reciprocate along the X direction.

In a possible implementation of the first aspect, the first voice coil is powered by a first conductive member and the second voice coil is powered by a second conductive member, wherein the first conductive member comprises at least two first contacts and the second conductive member comprises at least two second contacts.

Namely, the first voice coil can input different electric signals through a plurality of contacts, the second voice coil can input different electric signals through a plurality of contacts, and then the first voice coil can drive the first vibrating diaphragm to vibrate the air of the first sound cavity to emit sound waves with a specified phase, and the second voice coil can drive the second vibrating diaphragm to vibrate the air of the second sound cavity to emit sound waves with a specified phase. For example, when the phase difference of two sound waves is 0 degrees, the speaker assembly can increase the volume, and the speaker assembly is suitable for a scene of playing the electronic device by a user; when the phase difference of two sound waves is 180 degrees, the loudspeaker assembly can realize dipole sound field and far-field noise elimination, and is suitable for a scene of privacy protection when a user uses the communication of the electronic equipment.

In a possible implementation manner of the first aspect, the first speaker further includes a first magnetic steel set, where the first magnetic steel set is configured to provide a magnetic field for the first voice coil, and the first magnetic steel set is located on a side of the first voice coil facing away from the first diaphragm along the first direction; the second loudspeaker further comprises a second magnetic steel group, wherein the second magnetic steel group is used for providing a magnetic field for the second voice coil, and the second magnetic steel group is positioned on one side, back to the second vibrating diaphragm, of the second voice coil along the first direction.

That is, the first magnetic steel group and the second magnetic steel group can respectively provide corresponding magnetic field force for the first voice coil and the second voice coil.

In a possible implementation manner of the first aspect, the first magnetic steel set and the second magnetic steel set are disposed on the same magnetic conductive plate side by side along the second direction.

Namely, the first magnetic steel group and the second magnetic steel group can construct magnetic field force through the same magnetic conduction plate, and corresponding magnetic field force is provided for the first voice coil and the second voice coil.

In one possible implementation manner of the first aspect, at least one magnetic steel in the first magnetic steel group and at least one magnetic steel in the second magnetic steel group are integrated magnetic steel.

At least one of the first magnetic steel group and the second magnetic steel group shares magnetic steel, so that the number of parts is reduced, and the loudspeaker assembly is conveniently packaged.

In a second aspect, an embodiment of the present application further provides an electronic device, where the electronic device includes a housing and a speaker assembly in any one of the possible implementations of the first aspect, and the speaker assembly is disposed in the housing.

In a possible implementation of the second aspect, the first direction is parallel to a thickness direction of the electronic device.

Drawings

In order to more clearly illustrate the technical solution of the present application, the following description will briefly explain the drawings used in the description of the embodiments.

FIG. 1 illustrates a block diagram of an electronic device, according to some embodiments of the application;

fig. 2A illustrates an X-view of a speaker assembly according to some embodiments of the application;

fig. 2B illustrates a cross-sectional view of a speaker assembly according to some embodiments of the application;

fig. 2C illustrates an exploded view of a speaker assembly, according to some embodiments of the application;

fig. 3 shows a specific structural schematic diagram of a housing 11 according to an embodiment of the present application;

FIG. 4A is a cross-sectional view showing the structure of a reinforcing member and a diaphragm according to an embodiment of the present application;

fig. 4B shows a structural cross-sectional view of a support plate and voice coil in accordance with an embodiment of the present application;

fig. 5 shows a schematic structural view of another speaker assembly according to an embodiment of the present application;

fig. 6A illustrates a schematic package structure of an electronic device 100 according to some embodiments of the application;

fig. 6B illustrates a schematic diagram of a speaker assembly 01 packaged into an electronic device 100 according to some embodiments of the application;

FIG. 7A illustrates a schematic diagram of an external scene of an electronic device, according to some embodiments of the application;

FIG. 7B illustrates a sound leakage prevention scenario diagram of an electronic device according to some embodiments of the present application;

FIG. 8A illustrates a cross-sectional view of an electronic device with a speaker assembly in some embodiments;

fig. 8B shows a housing of another speaker assembly;

FIG. 8C shows a schematic view of the structure of an acoustic port of an electronic device;

fig. 9 shows a schematic diagram of a wearable device with a speaker in other embodiments;

fig. 10 shows a schematic cross-sectional view of an electronic device with a speaker assembly in yet other embodiments.

Reference numerals illustrate:

100-an electronic device;

01-a speaker assembly;

102-a middle frame;

103-screen;

104-a sound outputting area;

105-a sound emitting area;

01-speaker assembly, T-1-first speaker, T-2-second speaker;

11-a shell, 11 a-a first side wall, 11 b-a second side wall, 111-a first sound outlet, 112-a second sound outlet, 113-a partition plate, 114-a first shell wall, Q-a cavity, Q1-a first sound cavity and Q2-a second sound cavity;

12-a vibrating part, 121-a first reinforcing member, 122-a second reinforcing member, 123-a first diaphragm, 124-a second diaphragm;

13-supporting part, 131-supporting plate, 1311-first part, 1311 a-first hollow structure, 1312-second part, 1312 a-second hollow structure, 1313-connecting part, 132-voice coil, 1321-first voice coil, 1322-second voice coil;

14-electromagnetic modules, 141-conductive members, 1411-first conductive members, 1412-second conductive members, 142-magnetic steel, 1421-first magnetic steel groups, 1422-second magnetic steel groups, 1423-common magnetic steel and 143-magnetic conductive plates;

02-speaker assembly, T-3-third speaker, T-4-fourth speaker;

200-a housing;

201-a third diaphragm;

202-a support plate, 2021-a first portion, 2022-a second portion;

203-a fourth diaphragm;

800-an electronic device;

801-a speaker assembly, 801 a-a sound producing unit, 801 b-a sound producing unit, 804-an acoustic cavity, 805-an acoustic cavity, 811 a-a third housing, 811 b-a fourth housing, 812-a sound outlet, 804 '-a sound outlet, 805' -a sound outlet;

802-middle frame, 803-screen;

900-wearable equipment, 901-a first side wall, 902-a second side wall, 903-an acoustic hole, 904-an auxiliary acoustic hole, 905-an acoustic hole, 906-an extraction hole, 907-a speaker unit, 908-a housing;

1000-an electronic device;

s-11-speaker monomer, S-111-first vibrating diaphragm, S-11 a-first back cavity;

s-13-speaker monomer, S-131-second vibrating diaphragm, S-13 a-second back cavity;

s-15-magnetic circuit system, S-151-inner magnet, S-153-middle magnet, S-155-outer magnet, S-157-magnetic conductive plate, S-15 a-first magnetic gap, S-15 b-second magnetic gap;

S-17-a first frame body, S-19-a second frame body and S-191-a supporting table;

s-30-fixed shell, S-31-dilatation chamber.

Description of the embodiments

The technical scheme of the application will be described in further detail with reference to the accompanying drawings.

It will be appreciated that the electronic devices provided in the embodiments of the present application may include, but are not limited to, mobile phones, folding screen mobile phones, tablet computers, desktop computers, laptops, handheld computers, netbooks, and electronic devices such as augmented reality (augmented reality, AR)/Virtual Reality (VR) devices, smart televisions, smart watches, and the like, which are not limited herein.

Hereinafter, the electronic device 100 is described as an example.

Fig. 1 illustrates an exemplary block diagram of an electronic device 100 provided by some embodiments. In each of the drawings, the X direction (as a first direction) is a thickness direction of the electronic device 100 and each component (e.g., speaker assembly) in the electronic device 100, the Y direction (as a second direction) is a length direction of the electronic device 100 and each component in the electronic device 100, and the Z direction (as a third direction) is a width direction of the electronic device 100 and each component in the electronic device 100. Wherein, X direction, Y direction and Z direction are mutually perpendicular two by two.

Referring to fig. 1, an electronic device 100 may include a middle frame 102 and a screen 103. The middle frame 102 is used to carry electronics within the electronic device 100. The center 102 and the screen 103 together form a housing of the electronic device 100, and the speaker assembly 01 is disposed in the housing of the electronic device 100. In the present embodiment, the thickness direction of the speaker assembly 01 and the thickness direction of the electronic apparatus 100 are parallel to each other. In other embodiments, the thickness direction of the speaker assembly 01 may also intersect the thickness direction of the electronic device 100 (e.g., the two may form an angle of about 10 °).

As described above, in order to reduce the sound leakage phenomenon of the sound outlet of the center in a thinner electronic device, the present application proposes an electronic device including a speaker assembly of which two speakers are arranged side by side in the width direction of the electronic device. Since the two speakers are arranged side by side in the width direction, not back to back in the thickness direction, the thickness of the speaker assembly can be reduced. When the speaker assembly is applied to an electronic device, the thickness of the electronic device can be reduced.

Furthermore, two loudspeakers arranged side by side can also construct a dipole sound field, and the phenomenon of sound leakage is reduced in thinner electronic equipment.

An exemplary structure of the speaker assembly 01 provided in the embodiment of the present application is described below with reference to fig. 2A, 2B, and 2C.

Fig. 2A illustrates an X-view of a speaker assembly 01, according to some embodiments of the application. Fig. 2B shows a cross-sectional view of the speaker assembly 01 (section B-B of fig. 2A). Fig. 2C shows an exploded view of the speaker assembly 01.

Referring to fig. 2B, the speaker assembly 01 includes a housing 11, a first speaker T-1 provided in the housing 11, and a second speaker T-2 provided in the housing 11. Wherein the first speaker T-1 and the second speaker T-2 may be disposed side by side in the Z direction in the housing 11, thereby reducing the thickness of the speaker assembly 01 (the dimension of the speaker assembly 01 in the X direction) so that the speaker assembly 01 may be disposed in a thinner electronic device.

Specifically, referring to fig. 2B, in the X direction, a first speaker T-1 is provided in the housing 11, the first speaker T-1 includes a first diaphragm 123 capable of vibrating in the X direction, a first sound chamber Q1 is formed between the first diaphragm 123 and the housing 11, and the first sound chamber Q1 communicates with a first sound outlet 111 (not shown) on the housing 11 to transmit sound waves emitted from the first speaker T-1 to the outside of the speaker assembly 01.

In the X direction, a second speaker T-2 is provided in the housing 11, the second speaker T-2 includes a second diaphragm 124 capable of vibrating in the X direction, a second sound chamber Q2 is formed between the second diaphragm 124 and the housing 11, and the second sound chamber Q2 communicates with a second sound outlet 112 (not shown) on the housing 11 to transmit sound waves emitted from the second speaker T-2 to the outside of the speaker assembly 01.

In some embodiments, the housing 11 may include a first housing wall 114, where the first housing wall 114 is located at one end of the housing 11 along the X-direction. Along the X-direction, the first diaphragm 123 is located on a side of the first speaker T-1 facing the first housing wall 114, and the second diaphragm 124 is located on a side of the second speaker T-2 facing the first housing wall 114.

In some embodiments, the first diaphragm 123 and the second diaphragm 124 may be aligned along the Z direction, so that the first diaphragm 123 corresponds to the first acoustic cavity Q1, and the second diaphragm 124 corresponds to the second acoustic cavity Q2, so as to construct a dipole speaker.

In some embodiments, the housing 11 includes a first wall 114 and a divider 113. The housing 11 comprises a first housing on which the first housing wall 114 is located.

With continued reference to fig. 2B, the speaker assembly 01 further includes a support plate 131 disposed in the housing 11, and the first housing covers the support plate 131 along the X-direction and encloses a cavity Q with the support plate 131. And, the speaker assembly 01 further includes a partition plate 113 provided in the chamber.

Fig. 3 shows a specific structural schematic diagram of the housing 11 according to an embodiment of the present application.

Referring to fig. 3, the partition plate 113 partitions the cavity Q into first and second cavities along the Z direction, and partitions the support plate 131 into first and second portions 1311 and 1312, the first and second portions 1311 and 1312 corresponding to the first and second cavities, respectively.

Specifically, the housing 11 may further include a first side wall 11a and a second side wall 11b disposed opposite in the Z direction. A first sound outlet 111 and a second sound outlet 112 (not shown) are provided on the first side wall 11a at intervals in the Z direction. Therefore, when the speaker assembly 01 is disposed in the electronic device 100, the first and second sound outlets 111 and 112 may face the top wall of the electronic device 100, so as to facilitate the arrangement of the sound outlet channels inside the electronic device 100.

A partition plate 113 that connects the first side wall 11a and the second side wall 11b is provided in the housing 11, and partitions the cavity Q in the housing 11 into a first cavity and a second cavity in the Y direction.

Referring to fig. 2B and 2C, the partition plate 113 partitions the support plate 131 into a first portion 1311 and a second portion 1312. The first diaphragm 123 is disposed on a surface of the first portion 1311 of the support plate 131 facing the first housing wall 114, and a first acoustic cavity Q1 is formed between the first diaphragm 123 and the first housing wall 114. And the second diaphragm 124 is disposed on a surface of the second portion 1312 facing the first housing wall, and the second acoustic cavity Q2 is formed between the second diaphragm and the first housing wall. It will be appreciated that the first acoustic cavity Q1 may correspond to the first cavity above and the second acoustic cavity Q2 may correspond to the second cavity above.

In some embodiments, the first wall 114 and the partition 113 in the housing 11 may be integrally formed as a structural member, so that the first wall 114 and the partition 113 are seamless, and the first sound cavity Q1 and the second sound cavity Q2 are prevented from communicating. The two diaphragms can vibrate air in different sound cavities respectively, sound waves with different phases can be obtained, so that sound waves with accurate phases can be obtained to construct a dipole sound field, the sound waves are offset in a far field, and conversation privacy is protected. In addition, the position of the partition plate 113 in the integrally formed shell 11 can be accurately determined by a die, and the shell 11 is only required to be adhered to the vibrating diaphragm along the X direction when the loudspeaker assembly 01 is packaged, so that the packaging difficulty of the loudspeaker assembly 01 is reduced.

In some embodiments of the present application, the first diaphragm 123 and the second diaphragm 124 may be integrally formed as a film, and then the integrally formed film is adhered and laid on the support plate 131 along the X direction. Two diaphragm areas which can be vibrated are constructed through single pasting, and the first diaphragm 123 and the second diaphragm 124 are formed, so that the diaphragm packaging difficulty is effectively reduced.

It will be appreciated that the integrally formed membranes described above may be constructed from multiple composite laminates of different materials, thicknesses or similar sandwiches, in addition to the unified materials. The mechanical conductivity and the thermal balance are adjusted by different materials, thicknesses and the like to achieve uniform energy distribution and reduce distortion.

In some embodiments, the support plate 131 and the integrally formed membrane may be adhered by using glue, or the integrally formed membrane may be fixedly connected with the partition plate 113 by using high temperature. So that the integrally formed diaphragm may be divided into two parts capable of vibrating respectively by the partition plate 113, resulting in the first diaphragm 123 and the second diaphragm 124.

In some embodiments, the surface of the first diaphragm 123 may be provided with a first reinforcing member 121, and the surface of the second diaphragm 124 may be provided with a second reinforcing member 122.

Fig. 4A is a cross-sectional view of a reinforcing member and a diaphragm according to an embodiment of the present application.

Referring to fig. 4A, the first diaphragm 123 and the second diaphragm 124 are aligned in the Z direction, which makes the first diaphragm 123 and the second diaphragm 124 axially symmetrically disposed with respect to the separation plate 113, so that the first diaphragm 123 and the second diaphragm 124 emit sound waves of opposite phases, and a dipole sound field is conveniently realized.

The first reinforcing member 121 can reinforce the central area of the first diaphragm 123 along the X direction, so that the peripheral bulge of the first diaphragm 123 is a diaphragm area capable of vibrating substantially, and the noise generated by the excessively large vibrating area of the first diaphragm 123 during high-frequency vibration is avoided.

Similarly, the second reinforcing member 122 can reinforce the central region of the second diaphragm 124 along the X direction, so that the peripheral bulge of the second diaphragm 124 is a diaphragm region capable of vibrating substantially, and the noise generated by the excessively large vibrating area of the second diaphragm 124 during high-frequency vibration is avoided.

In some embodiments, the first and second reinforcements 121, 122 may be composed of metal, for example, may be composed of aluminum.

In the other embodiment, the first reinforcing member 121 and the second reinforcing member 122 may be constituted by metal layers and rigid layers laminated along the X direction, for example, a rigid layer constituted by an aluminum layer and a foam body is laminated as a reinforcing member along the X direction, and the rigid layer constituted by a foam body is fixed to the diaphragm.

In some embodiments, the first reinforcement member 121 may be adhered to the surface of the first diaphragm 123 near the first shell wall 114 through a glue layer, and the second reinforcement member 122 may be adhered to the surface of the second diaphragm 124 near the first shell wall 114 through a glue layer.

With continued reference to fig. 2C, the first portion 1311 of the support plate 131 to which the first diaphragm 123 and the second diaphragm 124 are attached includes a first hollowed structure 1311a, and the first diaphragm covers the first hollowed structure 1311a along the X direction. The second portion 1312 of the support plate 131 includes a second hollow structure 1312a, and the second diaphragm 124 covers the second hollow structure 1312a along the X direction. The first speaker T-1 includes a first voice coil 1321, where the first voice coil 1321 is movably disposed in the first hollow structure 1311a, and is used for driving the first diaphragm 123 to reciprocate along the X direction. The second speaker T-2 includes a second voice coil 1322, where the second voice coil 1322 is movably disposed in the second hollow structure 1312a, and is used for driving the second diaphragm 124 to reciprocate along the X direction.

The support plate, the first voice coil, and the second voice coil are further described below with reference to fig. 4B.

In some embodiments, referring to fig. 4B, the first voice coil 1321 is movably disposed in the first hollow structure 1311a of the first portion 1311, and the second voice coil 1322 is movably disposed in the second hollow structure 1312a of the second portion 1312. The first voice coil 1321 may be attached to the first diaphragm 123 in the direction away from X, and the second voice coil 1322 may be attached to the second diaphragm 124 in the direction away from X.

It can be appreciated that the first portion 1311 and the second portion 1312 respectively correspond to the first acoustic cavity Q1 and the second acoustic cavity Q2, the first voice coil 1321 in the first hollow structure 1311a can vibrate the air in the first acoustic cavity Q1 by vibrating the first diaphragm 123, and the second voice coil 1322 in the second hollow structure 1312a can vibrate the air in the second acoustic cavity Q2 by vibrating the second diaphragm 124.

To drive the first voice coil 1321 and the second voice coil 1322, the first speaker T-1 may include a first conductive member 1411, a first magnetic steel group 1421, and the second speaker T-2 may include a second conductive member 1412 and a second magnetic steel group 1422.

Referring to fig. 2C, in the direction away from X, the first conductive member 1411 is connected to the first voice coil 1321, and the second conductive member 1412 is connected to the second voice coil 1322. The first conductive member 1411 is used to input an electrical signal to the first voice coil 1321, and the second conductive member 1412 is used to input an electrical signal to the second voice coil 1322.

Along the X direction, the first magnetic steel set 1421 may be located on a side of the first voice coil 1321 facing away from the first diaphragm 123, and the second magnetic steel set 1422 may be located on a side of the second voice coil 1322 facing away from the second diaphragm 124. The first set of magnetic steels 1421 is configured to provide a magnetic field to the first voice coil 1321, and the second set of magnetic steels 1422 is configured to provide a magnetic field to the second voice coil 1322.

In some embodiments, the first magnetic steel set 1421 and the second magnetic steel set 1422 are symmetrically disposed along the Z direction with the connection portion 1313 in the support plate 131 as a symmetry axis, and the first magnetic steel set 1421 and the second magnetic steel set 1422 are commonly connected to the same magnetic conductive plate 143 along the X direction, so as to commonly provide symmetrical magnetic field force for the first voice coil 1321 and the second voice coil 1322.

Furthermore, in the on state, the first voice coil 1321 and the second voice coil 1322 are acted by the magnetic force generated by the first magnetic steel set 1421 and the second magnetic steel set 1422 which are axially symmetrically arranged, and the single voice coil generates lorentz force in the direction perpendicular to the plane of the single diaphragm and performs the cutting magnetic induction line motion along the direction, so as to push the diaphragm to perform the reciprocating motion along the direction of the voice coil. That is, when different voice coils are supplied with currents of different flow directions, the two voice coils may drive the first diaphragm 123 and the second diaphragm 124, respectively, to generate asynchronous reciprocating motions in the X direction. This causes the first diaphragm 123 of the first speaker T-1 and the second diaphragm 124 of the second speaker T-2 to vibrate the air in the corresponding sound cavity asynchronously, so that sound waves with opposite phases can be emitted, far-field silencing is achieved, and protection of call privacy is achieved in thinner electronic devices.

For example, the first diaphragm 123 may be caused to vibrate the first acoustic cavity Q1 to generate a sound wave of a first phase, and the second diaphragm 124 may be caused to vibrate the second acoustic cavity Q2 to generate a sound wave of a second phase, and the phase difference between the first phase and the second phase may be 180 degrees or 0 degrees.

It can be understood that when the phase difference is 180 degrees, the far-end sound waves cancel, so that the leakage phenomenon is effectively reduced. When the phase difference is 0 degree, the output volume can be enhanced, which is beneficial to the external playback source. For example, when a user uses the electronic device 100 for play-out, a loud volume may be generated.

In some embodiments, the first conductive member 1411 includes at least 2 contacts for inputting different electrical signals to the first voice coil 1321; the second conductive member 1412 includes at least 2 contacts for inputting different electrical signals to the second voice coil 1322. Further, the first voice coil 1321 and the second voice coil 1322 can be independently controlled to reciprocate along the X direction, and the air in the first sound cavity Q1 and the air in the second sound cavity Q2 can be respectively vibrated to emit sound waves with the same phase or different phases.

It will be appreciated that the plurality of contacts in the first conductive member 1411 and the second conductive member 1412 may form pins (pin pins) at designated locations of the housing 11 for accessing an external power source or ground after packaging the entire speaker assembly 01.

With continued reference to fig. 2C, in some embodiments, at least one magnetic steel in the first magnetic steel set 1421 and at least one magnetic steel in the second magnetic steel set 1422 in the electromagnetic module 14 are in an integrated structure, such as a common magnetic steel 1423, so as to reduce the number of parts and reduce the packaging difficulty of the speaker assembly 01.

In some embodiments, the plurality of magnetic steels in the first set of magnetic steels 1421 and/or the second set of magnetic steels 1422 may be composed of neodymium iron boron or ferrite.

The following describes in detail a speaker assembly 02 according to an embodiment of the present application with reference to fig. 5, taking a speaker assembly with two diaphragms located on opposite sides of the speaker assembly as an example.

Fig. 5 illustrates a schematic diagram of another speaker assembly, according to some embodiments of the application.

Referring to fig. 5, the speaker assembly 02 includes a housing 200 (not shown), a third speaker T-3 and a fourth speaker T-4 provided in the housing 200. The housing 200 may refer to the housing 11 shown in fig. 3, and further description of the housing 200 is omitted herein.

While the third speaker T-3 and the fourth speaker T-4 may be disposed side by side in the Z-direction in the housing 200 so that the speaker assembly 02 may be disposed in a thinner electronic device.

The third diaphragm 201 of the third speaker T-3 and the fourth diaphragm 203 of the fourth speaker T-4 are aligned in the Z direction. The support plates 202 of the third speaker T-3 and the fourth speaker T-4 are located on the same plane. Wherein the support plate 202 comprises a first portion 2021 and a second portion 2022 aligned along the Z-direction, and the third diaphragm 201 of the third speaker T-3 is disposed on the first portion 2021 along the X-direction, and the fourth diaphragm 203 of the fourth speaker T-4 is disposed on the second portion 2022 along the back to the X-direction. This allows both to emit dipole sound fields in thinner electronic devices as well. For example, when the third diaphragm 201 of the third speaker T-3 and the fourth diaphragm 203 of the fourth speaker T-4 are driven with the same electric signal, sound waves of opposite phases and the same amplitude can be emitted, and the far-end cancellation can be achieved. And when the third diaphragm 201 of the third speaker T-3 and the fourth diaphragm 203 of the fourth speaker T-4 are driven by opposite electric signals, sound waves with the same phase can be emitted, so as to realize the enhancement of the sound output.

It will be appreciated that either speaker assembly 01 or speaker assembly 02 may be packaged into a thinner electronic device 100.

The following describes a speaker assembly 01 as an example, and a scenario in which the speaker assembly is packaged into the electronic device 100 will be described in detail with reference to fig. 6A and 6B.

Fig. 6A illustrates a schematic package structure of an electronic device 100 according to some embodiments of the application. Fig. 6B illustrates a schematic structure of a speaker assembly 01 packaged into an electronic device 100 according to some embodiments of the application.

Referring to fig. 6A, the electronic device 100 includes a screen 103 and a middle frame 102. At the top of the screen 103 there is included a visible or invisible sound emitting area 107.

Referring to fig. 6B, the electronic device 100 includes a sound emitting region 1 located at the top of the side of the middle frame 102

06, the sound outlet region 106 may be a sound outlet. Further, the speaker 01 may be packaged between the screen 103 and the rear cover of the electronic device 100.

When the speaker 01 emits sound, two sounds having opposite phases are emitted from the first diaphragm 123 and the second diaphragm 124 (not shown in the drawing) respectively and transferred to the outside of the speaker assembly 01. For example, the sound emitted from the first diaphragm 123 is emitted from the first sound outlet 111 (not shown) to the sound outlet region 106 at the top of the side of the middle frame 102 through a first closed channel (not shown), and the sound emitted from the second diaphragm 124 is emitted from the sound outlet region 107 at the top of the screen to the outside of the electronic device 100 through a second closed channel that is not in communication with the first closed channel.

Furthermore, because the loudspeaker 01 is provided with the double movable voice coils matched with the double vibrating diaphragms, far-field noise elimination can be realized when the phases of the emitted sound are opposite, the call volume is reduced and leaked to other people, and the call privacy is protected. When the emitted sounds are identical, the loudness can be increased, the playing requirements of the user are met, and the use experience of the user is further improved.

Referring to fig. 7A, when a user needs to put the electronic device out, the first diaphragm 123 and the second diaphragm 124 can be made to emit in-phase sound waves, so as to effectively improve the put volume of the electronic device 100, and meet the put use requirement of the user.

Referring to fig. 7B, when a user speaks using the earpiece, the first diaphragm 123 and the second diaphragm 124 may be caused to emit opposite-phase sound waves. It will be appreciated that, according to the dipole principle, the first diaphragm 123 and the second diaphragm 124 can be ensured to have a low loudness to meet the hearing requirements of the wearer by having the human ear in an effective listening area (e.g., the human ear can be near the listening area 107 at the top of the screen). When sound is transmitted to a far distance, two equal-amplitude and opposite-phase sound waves cancel each other in a far field to form a silencing area, so that far-field silencing is realized, and far-field privacy of the electronic equipment 100 is effectively improved.

It will be appreciated that the first closed channel and the second closed channel may be not communicated with each other, and the specific structure of the first closed channel and the second closed channel is not particularly limited herein.

Fig. 8A illustrates a cross-sectional view of an electronic device with a speaker assembly in some embodiments.

Referring to fig. 8A, a middle box 802 and a screen 803 may be included in an electronic device 800. The middle frame 802 is used to carry electronics within the electronic device 800. The center 802 and the screen 803 together form a housing of the electronic device 800, and the speaker assembly 801 is disposed in the housing of the electronic device 800.

When the speaker assembly 801 emits sound waves in opposite phase, such sound waves may cancel out at a distance such that the user only hears a clear sound when proximate to the top of the screen 803, while the sound output at the top of the side of the center 802 is reduced in far volume, reducing the leakage.

The speaker assembly 801 includes a sound emitting unit 801a and a sound emitting unit 801b disposed opposite to each other in the X direction, wherein a diaphragm of the sound emitting unit 801a faces away from the screen 803 and a diaphragm of the sound emitting unit 801b faces toward the screen 803. The speaker assembly 801 constructs two acoustic cavities within the electronic device 800, wherein the sound unit 801a and the housing of the electronic device 800 construct an acoustic cavity 804, and the acoustic cavity 804 has an opening (sound outlet) on the middle frame 802. And sound emitting unit 801b and a housing (e.g., screen) of electronic device 800 create a closed acoustic cavity 805. This makes it possible for sound emitting unit 801a to emit sound waves in the Y direction from the opening of center frame 802 through acoustic chamber 804, and sound emitting unit 801b to emit sound waves in the X direction through sealed acoustic chamber 805, providing sound waves to the user.

However, in this embodiment, since the speaker assembly 801 needs to dispose two sound emitting units opposite to each other in the X direction, the thickness is thick. In addition, the speaker assembly 801 needs to construct two non-intercommunicating acoustic cavities, such as the acoustic cavity 804 and the acoustic cavity 805, along the X-direction, so that the required thickness of the electronic device is larger, which is difficult to apply to thinner electronic devices.

Fig. 8B illustrates a housing of another speaker assembly in some embodiments.

Referring to fig. 8B, the speaker assembly 801 may also be a dipole speaker assembly composed of four speakers, and two speakers may be disposed back-to-back. The housing of the speaker assembly 801 may be two housings stacked in the thickness direction of the electronic apparatus 800, for example, a housing 811a and a housing 811b stacked in the thickness direction of the electronic apparatus 800 may have four sound outlet holes 812.

Fig. 8C shows a schematic view of the sound outlet structure of the electronic device 800.

In conjunction with fig. 8B, in cooperation with four sound outlets 812 on the speaker assembly 801, two sound outlets 804 'corresponding to the acoustic cavity 804 may be provided on the middle frame, and two sound outlets 805' corresponding to the acoustic cavity 805 may be provided on top of the screen 803.

However, the dipole speaker assembly is not suitable for thinner electronic devices, and hole sites are added, so that the full screen design is difficult to realize.

Fig. 9 shows a schematic diagram of a wearable device with a speaker in other embodiments.

Referring to fig. 9, a speaker monomer 907 is disposed in the wearable device 900 and is disposed between the first side wall 901 and the second side wall 902 of the wearable device, a housing 908 of the wearable device 900 is a casing of the speaker monomer 907, and an acoustic hole 903, an auxiliary acoustic hole 904, an acoustic hole 905 and an extraction hole 906 are disposed on the housing 908. The speaker unit 907 divides the inner cavity of the wearable device 900 into a front sound cavity and a rear sound cavity (not shown in the figure). Wherein, the shell 908 is provided with a sound discharging hole 905 for communicating the rear sound cavity with the outside and a sound outlet 903 for communicating the front sound cavity with the outside. Wherein the sound outlet 903 is provided in the first side wall 901 of the front sound cavity.

In this embodiment, the auxiliary sound hole 904 and the sound outlet 903 are provided to form a dipole structure with the sound outlet 905, respectively, and the auxiliary sound hole 904 is adjacent to the sound outlet 905, and the double dipole structure is formed by using the auxiliary sound hole 904 and the sound outlet 903 to have the same phase as the sound outlet 905. And further, the sound wave offset in the far field frequency response is realized, and the problem of far field sound leakage is improved.

However, in this embodiment, precise placement of specific locations of the plurality of hole sites is required to achieve a double dipole structure. The housing in this embodiment is more difficult to manufacture than the speaker assemblies 01 and 02 according to the embodiments of the present application.

Fig. 10 shows a schematic cross-sectional view of an electronic device with a speaker assembly in further embodiments.

Referring to fig. 10, two speaker units are disposed in a fixed housing S-30 of an electronic device 1000, a speaker unit S-11 and a speaker unit S-13 are stacked in a thickness direction of the electronic device, and the speaker unit S-13 is disposed opposite to the speaker unit S-11, and a vibration system of the speaker unit S-11 and the speaker unit S-13 are disposed at opposite sides of a common magnetic circuit system S-15. The speaker unit S-13 is disposed on a support stand S-191 of the second frame S-19. Along the thickness direction of the electronic device, the first frame S-17 is arranged on the speaker unit S-11, and is matched with the second frame S-19 to accommodate the speaker unit S-11 and the speaker unit S-13 in the fixed shell S-30. And, along the width direction of the electronic equipment, the fixed shell S-30 comprises a capacity expansion cavity S-31.

The magnetic circuit system S-15 comprises an inner magnet S-151, a middle magnet S-153, an outer magnet S-155 and magnetic conduction plates S-157 arranged on two sides of the inner magnet S-151, the middle magnet S-153 and the outer magnet S-155. Wherein, a first magnetic gap S-15a corresponding to the speaker unit S-11 is formed between the middle magnet S-153 and the inner magnet S-151, and a second magnetic gap S-15b corresponding to the speaker unit S-13 is formed between the middle magnet S-153 and the outer magnet S-155.

The loudspeaker unit S-11 comprises a first vibrating diaphragm S-111, and a first rear cavity S-11a is formed between the first vibrating diaphragm S-111 and the magnetic circuit system S-15. The loudspeaker unit S-13 comprises a second vibrating diaphragm S-131, and a second rear cavity S-13a is formed between the second vibrating diaphragm S-131 and the magnetic circuit system S-15. The first rear chamber S-11a and the second rear chamber S-13a are disposed apart from each other.

In this embodiment, the speaker unit S-11 and the speaker unit S-13 share the magnetic circuit system, but the two speaker units are still stacked in the thickness direction of the electronic device, which is difficult to apply to a thinner electronic device.

It should be noted that in the examples and descriptions of this patent, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

While the application has been shown and described with reference to certain embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the application.

Claims

1. A speaker assembly, comprising:

the shell is provided with a first sound outlet and a second sound outlet;

the first loudspeaker is arranged in the shell and comprises a first vibrating diaphragm capable of vibrating along a first direction, a first sound cavity is formed between the first vibrating diaphragm and the shell, and the first sound cavity is communicated with the first sound outlet;

the second loudspeaker is arranged in the shell and comprises a second vibrating diaphragm capable of vibrating along the first direction, a second sound cavity is formed between the second vibrating diaphragm and the shell, and the second sound cavity is communicated with the second sound outlet;

the first loudspeaker and the second loudspeaker are arranged side by side along a second direction, and the second direction is perpendicular to the first direction.

2. The speaker assembly as recited in claim 1, wherein the housing includes a first housing wall located at one end of the housing in a first direction;

Along the first direction, the first vibrating diaphragm is located on one side of the first loudspeaker facing the first shell wall, and the second vibrating diaphragm is located on one side of the second loudspeaker facing the first shell wall.

3. The speaker assembly as recited in claim 2, wherein the first diaphragm and the second diaphragm are aligned along the second direction.

4. A loudspeaker assembly according to claim 3, wherein the housing comprises a first housing, the first housing wall being located on the first housing;

the loudspeaker assembly further comprises a support plate arranged in the shell, and the first shell is covered on the support plate along the first direction and forms a cavity together with the support plate;

the loudspeaker assembly further comprises a separation plate arranged in the cavity, the separation plate separates the cavity into a first cavity and a second cavity along the second direction and separates the supporting plate into a first part and a second part, and the first part and the second part respectively correspond to the first cavity and the second cavity;

the first vibrating diaphragm is arranged on the surface of the first part of the supporting plate, which faces the first shell wall, and the first sound cavity is formed between the first vibrating diaphragm and the first shell wall;

The second vibrating diaphragm is arranged on the surface, facing the first shell wall, of the second part of the supporting plate, and a second sound cavity is formed between the second vibrating diaphragm and the first shell wall.

5. The speaker assembly as recited in claim 4, wherein the first diaphragm and the second diaphragm are of unitary construction and/or the support plate is of unitary construction.

6. The loudspeaker assembly of claim 1, wherein a surface of the first diaphragm is provided with a first stiffening member; and/or the surface of the second vibrating diaphragm is provided with a second reinforcing piece.

7. The speaker assembly as recited in claim 1, wherein the housing includes first and second sidewalls disposed opposite one another along a third direction, the third direction being perpendicular to the first and second directions;

the first sound outlet and the second sound outlet are arranged on the first side wall at intervals along the second direction.

8. The speaker assembly as recited in claim 4, wherein the first portion of the support plate includes a first hollowed-out structure, the first diaphragm covering the first hollowed-out structure along the first direction;

The second part of the supporting plate comprises a second hollow structure, and the second vibrating diaphragm covers the second hollow structure along the first direction;

the first loudspeaker comprises a first voice coil, and the first voice coil is movably arranged in the first hollow structure and is used for driving the first vibrating diaphragm to vibrate along the first direction;

the second loudspeaker comprises a second voice coil, and the second voice coil is movably arranged in the second hollow structure and used for driving the second vibrating diaphragm to vibrate along the first direction.

9. The speaker assembly as recited in claim 8, wherein the first voice coil is powered by a first conductive member and the second voice coil is powered by a second conductive member, wherein the first conductive member comprises at least two first contacts and the second conductive member comprises at least two second contacts.

10. The loudspeaker assembly of claim 8, wherein the first loudspeaker further comprises a first set of magnetic steels for providing a magnetic field to the first voice coil, the first set of magnetic steels being located on a side of the first voice coil facing away from the first diaphragm in the first direction;

The second loudspeaker further comprises a second magnetic steel group, the second magnetic steel group is used for providing a magnetic field for the second voice coil, and the second magnetic steel group is located on one side, back to the second vibrating diaphragm, of the second voice coil along the first direction.

11. The loudspeaker assembly of claim 10, wherein the first set of magnetic steels and the second set of magnetic steels are disposed side-by-side on the same magnetically permeable plate along the second direction.

12. The loudspeaker assembly of claim 11, wherein at least one of the first set of magnetic steels and at least one of the second set of magnetic steels are unitary magnetic steels.

13. An electronic device comprising a housing and the speaker assembly of any one of claims 1 to 12, the speaker assembly being disposed in the housing.

14. The electronic device of claim 13, wherein the first direction is parallel to a thickness direction of the electronic device.