CN116233705A

CN116233705A - Speaker module and electronic equipment

Info

Publication number: CN116233705A
Application number: CN202310336975.0A
Authority: CN
Inventors: 岳德刚; 闫鑫; 孙伟
Original assignee: Guangdong Hongqin Communication Technology Co Ltd
Current assignee: Guangdong Hongqin Communication Technology Co Ltd
Priority date: 2023-03-30
Filing date: 2023-03-30
Publication date: 2023-06-06

Abstract

The embodiment of the invention relates to the technical field of electroacoustic products, and discloses a loudspeaker module and electronic equipment. The speaker module of the present invention includes: the upper cover and the lower cover jointly enclose a containing cavity; a supporting plate is arranged in the accommodating cavity and divides the accommodating cavity into a first cavity and a second cavity; the accommodating cavity is internally provided with a first vibrating diaphragm positioned in the first cavity and a second vibrating diaphragm positioned in the second cavity, the accommodating cavity is internally provided with an armature, the armature penetrates through the supporting plate and is fixed on the supporting plate, the armature is provided with a magnetic piece and a coil, the coil magnetizes the armature in an electrified state, and the magnetized armature reciprocates under the action of magnetic force of the magnetic piece; the armature is fixed with a first connecting rod and a second connecting rod, the first connecting rod is positioned in the first cavity, and the first connecting rod drives the first vibrating diaphragm to vibrate along with the reciprocating motion of the armature; the second connecting rod is positioned in the second cavity, and the second connecting rod drives the second vibrating diaphragm to vibrate along with the reciprocating motion of the armature, so that the integration of the loudspeaker sounding unit is realized.

Description

Speaker module and electronic equipment

Technical Field

The embodiment of the invention relates to the technical field of electroacoustic products, in particular to a loudspeaker module and electronic equipment.

Background

Along with the increasing demand of users for sound effects of high-tone full-frequency bands, the loudspeakers are required to have higher high-frequency ductility and lower low-frequency lower potential, but conventional single balanced armature loudspeakers are limited by small volumes, cannot consider full-frequency bands and cannot meet the demands of users for sound effects, so that a plurality of sound generating units are generally required to be overlapped to form a loudspeaker module in sound generating equipment to widen the coverage range of the frequency bands.

The inventor finds that when a plurality of sound generating units are stacked to form the speaker module, only two independent sound generating units are simply stacked, and deep integration cannot be achieved, that is, the existing speaker module comprising the plurality of sound generating units cannot guarantee miniaturization of the volume.

Disclosure of Invention

The embodiment of the invention aims to provide a loudspeaker module and electronic equipment, which realize the integration of a loudspeaker sounding unit and reduce the volume of the loudspeaker module.

To solve the above technical problems, an embodiment of the present invention provides a speaker module, including: the upper cover and the lower cover jointly enclose a containing cavity; a supporting plate is arranged in the accommodating cavity and divides the accommodating cavity into a first cavity and a second cavity; the accommodating cavity is internally provided with a first vibrating diaphragm and a second vibrating diaphragm, the first vibrating diaphragm is positioned in the first cavity, the second vibrating diaphragm is positioned in the second cavity, and the first vibrating diaphragm and the second vibrating diaphragm are respectively fixed on two sides of the supporting plate; an armature is arranged in the accommodating cavity, penetrates through the supporting plate and is fixed on the supporting plate, a magnetic piece and a coil are arranged on the armature, the coil magnetizes the armature in an electrified state, and the magnetized armature reciprocates under the action of magnetic force of the magnetic piece; the armature is fixed with a first connecting rod and a second connecting rod, the first connecting rod is positioned in the first cavity, and the first connecting rod drives the first vibrating diaphragm to vibrate along with the reciprocating motion of the armature; the second connecting rod is positioned in the second cavity, and the second connecting rod drives the second vibrating diaphragm to vibrate along with the reciprocating motion of the armature.

The embodiment of the invention also provides electronic equipment, which comprises: the loudspeaker comprises a shell and the loudspeaker module arranged in the shell.

Compared with the prior art, the embodiment of the invention utilizes the supporting plate to divide the accommodating cavity of the common surrounding area of the upper cover and the lower cover into the first cavity and the second cavity, and each cavity is provided with the corresponding vibrating diaphragm and the connecting rod for driving the vibrating diaphragm to vibrate. The same driving piece is commonly used to connecting rod that two cavitys correspond respectively, namely through running through an armature of backup pad, and two connecting rods motions in two cavitys of magnetism spare and coil drive that set up on the armature, can magnetize the armature under the coil is in the circular telegram state, the armature after the magnetization is in the magnetic force effect with magnetism spare down reciprocating motion, drive the head rod and the second connecting rod motion at armature both ends, and then drive the first vibrating diaphragm and the second vibrating diaphragm vibration that are in first cavity and second cavity respectively, send high frequency band sound and low frequency band sound respectively. Through the mode of the public part sound production driving piece of high frequency channel sound production unit and low frequency channel sound production unit, realized the degree of depth integration of speaker module, furthest reduced speaker module's volume.

In addition, the number of coils is two, and one coil is located in the first cavity, and the other coil is located in the second cavity. The double coils on the left side and the right side of the supporting plate are simultaneously electrified, so that more energy is provided for driving the armature to move, and the sensitivity is improved.

In addition, the volumes of the first cavity and the second cavity are different, and when the number of the coils is one, the coils are positioned in one cavity with larger volume in the first cavity and the second cavity. The cavity volume is bigger, is favorable to the setting of coil more, improves the utilization ratio in space.

In addition, the supporting plate is also provided with a through hole, and the through hole is communicated with the first cavity and the second cavity. Through the through hole, the audio filtering is realized, and the audio quality is improved.

In addition, the number of the through holes is one or a plurality, and in the case that the number of the through holes is a plurality, the through holes are arranged on the supporting plate, and the through holes are distributed on the upper side and the lower side of the armature.

In addition, the through holes can be filled with damping materials to adjust the frequency response.

In addition, the magnetic piece is: the first magnet pair is arranged in the first cavity and the second magnet pair is arranged in the second cavity, and the first magnet pair and the second magnet pair are respectively arranged on two sides of the armature far away from the supporting plate.

In addition, the volumes of the first cavity and the second cavity are different, the thickness of the part of the armature in the first cavity is different from that of the part of the armature in the second cavity, and the thickness of the part of the armature in the larger one of the first cavity and the second cavity is thicker. Through the thickness of control armature and through the volume that changes backup pad position in order to control first cavity and second cavity, the sound production frequency channel of dynamic regulation and control sound production unit realizes full frequency band coverage.

In addition, the upper cover is fixedly provided with an acoustic pipe which is communicated with the first cavity and the outside of the accommodating cavity, and the acoustic pipe is also communicated with the second cavity and the outside of the accommodating cavity; the volumes of the first cavity and the second cavity are different, and the sound outlet pipe is arranged at a position close to one cavity with smaller volume in the first cavity and the second cavity so as to improve the quality of high-frequency sound.

In addition, the sound outlet pipe and the upper cover are mutually independent, and the sound outlet pipe and the upper cover are fixed in an assembling mode; or the sound outlet pipe and the upper cover are integrally formed.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 is a schematic diagram of an exploded structure of a speaker module according to an embodiment of the present invention;

fig. 2 is a front view of a speaker module according to an embodiment of the present invention;

fig. 3 is a left side view illustrating a structure of a speaker module according to an embodiment of the present invention;

fig. 4 is an exploded view of another speaker module according to an embodiment of the present invention;

fig. 5 is a front view showing the structure of another speaker module according to an embodiment of the present invention;

fig. 6 is a left side view illustrating a structure of another speaker module according to an embodiment of the present invention;

fig. 7 is a schematic perspective view of an armature structure according to an embodiment of the invention;

fig. 8 is a schematic perspective view of another armature structure according to an embodiment of the invention;

fig. 9 is a schematic diagram of an armature state with a coil not energized in accordance with an embodiment of the invention;

fig. 10 is a schematic diagram of an armature condition with a coil energized in accordance with an embodiment of the invention;

fig. 11 is a schematic diagram of an armature state with another coil not energized in accordance with an embodiment of the invention;

fig. 12 is a schematic diagram of an armature condition with another coil energized in accordance with an embodiment of the invention;

FIG. 13 is a schematic view of an integrally formed sound tube and cover structure in accordance with an embodiment of the present invention;

fig. 14 is a schematic view of another integrally formed sound tube and cover structure according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present invention, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments.

The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present invention, and the embodiments can be mutually combined and referred to without contradiction.

An embodiment of the present invention relates to a speaker module, as shown in fig. 1 to 6, including: an upper cover 11 and a lower cover 12, the upper cover 11 and the lower cover 12 enclosing a containing cavity together; a supporting plate 2 is arranged in the accommodating cavity, the bottom and the side edges of the supporting plate are fixed on the lower cover, the upper end of the supporting plate is connected to the upper cover and the vibrating diaphragm, and the supporting plate 2 divides the accommodating cavity into a first cavity and a second cavity; the accommodating cavity is internally provided with a first vibrating diaphragm 31 and a second vibrating diaphragm 32, the first vibrating diaphragm 31 is positioned in the first cavity, the second vibrating diaphragm 32 is positioned in the second cavity, and the first vibrating diaphragm 31 and the second vibrating diaphragm 32 are respectively fixed on two sides of the supporting plate 2; an armature 4 is also arranged in the accommodating cavity, the armature 4 penetrates through the supporting plate 2 and is fixed on the supporting plate 2, a magnetic piece 5 and a coil 6 are arranged on the armature 4, the coil 6 magnetizes the armature 4 in an electrified state, and the magnetized armature 4 reciprocates under the action of magnetic force with the magnetic piece 5; a first connecting rod 71 and a second connecting rod 72 are fixed on the armature 4, the first connecting rod 71 is positioned in the first cavity, and the first connecting rod 71 drives the first vibrating diaphragm 31 to vibrate along with the reciprocating motion of the armature 4; the second connecting rod 72 is located in the second cavity, and the second connecting rod 72 moves along with the reciprocation of the armature 4 to vibrate the second diaphragm 32.

In order to enable the loudspeaker module to provide sounds in different frequency bands, the sounding frequency band of the sounding unit can be changed by adjusting the volume of the first cavity and the second cavity or adjusting the thickness of the armature, and the sounding frequency band of the sounding unit can be reduced by enlarging the volume of the cavity, and the sounding frequency band of the sounding unit can be reduced by increasing the thickness of the part of the armature in the cavity of the sounding unit; conversely, the volume of the cavity is reduced to improve the sounding frequency band of the sounding unit, and the thickness of the armature belonging to the cavity of the sounding unit is reduced to improve the sounding frequency band of the sounding unit. In the embodiment of the invention, the volume of the cavity and the thickness of the armature are adjusted, so that the loudspeaker module can take full frequency band into consideration.

In addition, as shown in fig. 1, the number of coils 6 in the speaker module may be two, wherein one coil is located in the first cavity and the other coil is located in the second cavity. The two coils can be symmetrically arranged based on the supporting plate to uniformly provide driving force for armatures in the high-frequency sounding unit and the low-frequency sounding unit, and the positions of the coils can be adjusted according to different driving forces required by the high-frequency sounding unit and the low-frequency sounding unit during vibration. When the loudspeaker module works, the double coils on the left side and the right side of the supporting plate are simultaneously electrified, so that more energy is provided for driving the armature to move, and the sensitivity is improved.

In addition, as shown in fig. 4, the number of coils 6 in the speaker module may be one, and in the case where the number of coils 6 is one and the volumes of the first cavity and the second cavity are different, the coils are located in one cavity with a larger volume of the first cavity and the second cavity. As shown in fig. 4, the volume of the cavity on the right side of the support plate 2 is obviously larger than that of the cavity on the left side of the support plate 2, the coil 6 is arranged in the cavity on the right side of the support plate 2, the cavity is larger, the arrangement of the coil is facilitated, and the space utilization rate is improved. If the volumes of the first cavity and the second cavity are the same, and the number of coils is one, one cavity can be selected arbitrarily for setting the coils, or the specific setting positions of the coils are determined according to the requirements of sounding frequency bands.

In addition, as shown in fig. 7 to 8, a through hole is further formed in the support plate, and the through hole communicates with the first cavity and the second cavity. Through the through hole, the audio filtering is realized, the low-frequency lower potential capacity of the loudspeaker is regulated, and the audio quality is improved. The number of through holes is one or more, and in the case that the number of through holes is plural, the through holes are distributed on the support plate and are located on the upper side and the lower side of the armature, as shown in fig. 8, the number of through holes is two, and one through hole is provided on the upper side and the lower side of the armature, in addition, the two through holes may be symmetrically provided with respect to the armature. The number, the positions and the sizes of the through holes are not particularly limited in the embodiment of the invention, and the number, the positions and the sizes of the through holes can be dynamically adjusted in order to improve the filtering effect of sound.

In addition, as shown in fig. 7 to 8, the thickness of the armature in the different cavities may be the same or different, and if the thickness of the part of the armature in the first cavity is different from the thickness of the part of the armature in the second cavity, and the volumes of the first cavity and the second cavity are different, the thickness of the part of the armature in the larger one of the first cavity and the second cavity is thicker. The sounding frequency band of the sounding unit is dynamically regulated and controlled by controlling the thickness of the armature, so that full-band coverage is realized. When the thickness of the armatures is different, the thickness of the part of the armatures in the same cavity is consistent, and only the thickness of the two parts of the armatures respectively in different cavities is different. In practical application, the stiffness and the resonance point of the driving part of the loudspeaker module can be changed by adjusting the thickness of the armature and the position of the supporting plate in the accommodating cavity, so that the purpose of changing the frequency response of the loudspeaker module is achieved, and the effect of dynamically regulating and controlling the frequency response of the loudspeaker module is realized.

In addition, the magnetic part in the embodiment of the invention is as follows: the first magnet pair is arranged in the first cavity and the second magnet pair is arranged in the second cavity, the first magnet pair and the second magnet pair are respectively arranged on two sides of the armature far away from the supporting plate, and when the loudspeaker module does not work and the coil is not electrified, the armature is positioned in the middle position of the magnet pair to keep a balanced state. When the coil is electrified with an alternating current sound signal, the armature is magnetized, and the armature and the magnet pair are attracted and repelled mutually under the magnetic action to reciprocate so as to drive the connecting rod and the vibrating diaphragm to move, the vibrating diaphragm extrudes air to radiate sound waves, and the sound is emitted by the sound emitting tube.

Under the condition that the loudspeaker module is provided with two coils, the two coils are loaded with sound signals in the same direction, so as to ensure that armatures on the left side and the right side of the support plate 2 simultaneously upwards or downwards squeeze air, and magnetizing directions of the two magnet pairs are opposite. Fig. 9 to 10 show the calculation results of finite element simulation of the armature movement condition in the case, the armature state is shown in fig. 9 and is balanced before the coil is electrified, the armature state is shown in fig. 10 at a certain moment after the coil is electrified, and the armature moves to drive the vibrating diaphragm to deflect.

Under the condition that the loudspeaker module is provided with a coil and the volumes of the first cavity and the second cavity are different, in order to ensure that the armatures of the left side and the right side of the support plate 2 simultaneously upwards or downwards squeeze air, the magnetizing directions of the two magnet pairs need to be opposite. Fig. 11 to 12 show the calculation results of finite element simulation of the armature movement condition in the case, the armature state is shown in fig. 11 and is balanced before the coil is electrified, the armature state is shown in fig. 12 at a certain moment after the coil is electrified, and the armature moves to drive the vibrating diaphragm to deflect. Under the condition that the volumes of the first cavity and the second cavity are different, the sizes of the first vibrating diaphragm and the second vibrating diaphragm are also different, the vibrating diaphragm with larger size is arranged in the cavity with larger volume, and the vibrating diaphragm with smaller size is arranged in the cavity with smaller volume. One side of the cavity with larger volume is used as a bass unit, one side of the cavity with smaller volume is used as a treble unit, and sounds with different frequency bands generated by the two cavities are naturally fused at the sound outlet pipe and are transmitted to the outside of the loudspeaker module.

In addition, as shown in fig. 1 and fig. 4, the speaker module further includes a first magnetic conductive ring 91 disposed in the first cavity and a second magnetic conductive ring 92 disposed in the second cavity, where the first magnetic conductive ring 91 surrounds the first magnet pair, and the second magnetic conductive ring 92 surrounds the second magnet pair, so that the magnetic conductive ring can play a good role in suppressing high-frequency noise and playing an anti-interference role.

In addition, the upper cover 11 is fixedly provided with an acoustic pipe 8, the acoustic pipe 8 is communicated with the first cavity and the outside of the accommodating cavity, and the acoustic pipe 8 is also communicated with the second cavity and the outside of the accommodating cavity; the volumes of the first cavity and the second cavity are different, and the sound outlet pipe 8 is arranged close to one cavity with smaller volume in the first cavity and the second cavity, so that the quality of high-frequency sound is improved.

In addition, in the above embodiment, the sound outlet tube 8 and the upper cover 11 are used as separate components, and the speaker module is obtained by assembling, and the sound outlet tube 8 and the upper cover 11 may be integrally formed as shown in fig. 13 and 14, so as to reduce the operation steps required for assembling. The position of the sound outlet tube 8 in the upper cover 11 can be adjusted according to the change of the volumes of the first cavity and the second cavity.

The embodiment of the invention also relates to electronic equipment, which comprises: the loudspeaker comprises a shell and the loudspeaker module arranged in the shell. The electronic device further includes: a device sound outlet; the equipment sound outlet is arranged close to the sound outlet pipe of the loudspeaker module, or the sound outlet Guan Yanshen of the loudspeaker module is connected to the shell of the electronic equipment, and the sound outlet pipe of the loudspeaker module is used as the sound outlet of the equipment.

In addition, electronic devices include, but are not limited to, full-band sound emitting devices such as headphones, speakers, and the like.

The speaker module in this embodiment is consistent with implementation details in the foregoing speaker module embodiment, and related technical details mentioned in the speaker module embodiment are still valid in this embodiment, so that repetition is reduced, and details are not repeated here.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of carrying out the invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. A speaker module, comprising: the upper cover and the lower cover jointly enclose a containing cavity; a supporting plate is arranged in the accommodating cavity and divides the accommodating cavity into a first cavity and a second cavity;

the accommodating cavity is internally provided with a first vibrating diaphragm and a second vibrating diaphragm, the first vibrating diaphragm is positioned in the first cavity, the second vibrating diaphragm is positioned in the second cavity, and the first vibrating diaphragm and the second vibrating diaphragm are respectively fixed on two sides of the supporting plate;

an armature is further arranged in the accommodating cavity, penetrates through the supporting plate and is fixed on the supporting plate, a magnetic piece and a coil are arranged on the armature, the coil magnetizes the armature in an electrified state, and the magnetized armature reciprocates under the action of magnetic force of the magnetic piece;

a first connecting rod and a second connecting rod are fixed on the armature, the first connecting rod is positioned in the first cavity, and the first connecting rod drives the first vibrating diaphragm to vibrate along with the reciprocating motion of the armature; the second connecting rod is positioned in the second cavity, and the second connecting rod drives the second vibrating diaphragm to vibrate along with the reciprocating motion of the armature.

2. The speaker module of claim 1, wherein the number of coils is two, one coil being in the first cavity and the other coil being in the second cavity.

3. The speaker module of claim 1, wherein the first and second cavities differ in volume, and wherein the coil is in a larger one of the first and second cavities if the number of coils is one.

4. The speaker module of claim 1, wherein the support plate is further provided with a through hole, and the through hole communicates with the first cavity and the second cavity.

5. The speaker module as claimed in claim 4, wherein the number of the through holes is one or more, and in the case that the number of the through holes is plural, the through holes are distributed on both upper and lower sides of the armature.

6. The speaker module of claim 1, wherein the magnetic element is: the first magnet pair is arranged in the first cavity, the second magnet pair is arranged in the second cavity, and the first magnet pair and the second magnet pair are respectively arranged on two sides of the armature far away from the supporting plate.

7. The speaker module of claim 1, wherein the first and second cavities differ in volume and the thickness of the portion of the armature in the first cavity differs from the thickness of the portion of the armature in the second cavity, the thickness of the portion of the armature in the larger of the first and second cavities being thicker.

8. The loudspeaker module of claim 1, wherein an acoustic pipe is fixedly arranged on the upper cover, the acoustic pipe is communicated with the first cavity and the outside of the accommodating cavity, and the acoustic pipe is also communicated with the second cavity and the outside of the accommodating cavity;

the volumes of the first cavity and the second cavity are different, and the sound outlet tube is arranged at a position close to one of the first cavity and the second cavity, which is smaller in volume.

9. The speaker module as recited in claim 5, wherein the sound outlet tube and the upper cover are independent of each other, and the sound outlet tube and the upper cover are fixed by assembling;

or, the sound outlet pipe and the upper cover are integrally formed.

10. An electronic device, comprising: a housing and a speaker module according to any one of claims 1 to 9 disposed within the housing.