CN116055966A - Speakers and Electronics - Google Patents

Abstract

The application provides a speaker and electronic equipment, the speaker includes: the shell comprises a front cavity and a rear cavity, and an acoustic outlet communicated with the front cavity; the sounding unit is arranged in the shell and is correspondingly arranged with the front cavity; the resonance structure is arranged in the front cavity and comprises a sound guiding port and a plurality of sound guiding channels communicated with the sound guiding port, and the sound guiding port is communicated with the front cavity.

Description

Speakers and Electronics

technical field

The present application belongs to the technical field of electronic equipment, and in particular relates to a loudspeaker and an electronic equipment.

Background technique

In related technologies, mobile phones generally use speaker modules that emit side sound, that is, the vibration direction of the speaker diaphragm is perpendicular to the direction of the sound outlet, which requires the introduction of a side sound channel to form a front cavity.

However, although the existence of the front cavity expands the effective bandwidth, at the same time, a formant is generated in the 4kHz to 6kHz frequency band of the frequency response curve, and human dental sounds and consonants also exist in this frequency band. The sound is obvious, resulting in poor audio playback effect.

Contents of the invention

The present application aims to provide a loudspeaker and electronic equipment, which can solve the technical problem of poor audio playback effect of the loudspeaker in the related art.

In order to solve the above-mentioned technical problems, the application is implemented as follows:

In a first aspect, the present application provides a loudspeaker, including:

a housing, the housing includes a front cavity and a rear cavity, and a sound outlet communicating with the front cavity;

The sounding unit is arranged in the casing, and the sounding unit is set correspondingly to the front cavity;

The resonance structure is arranged in the front cavity. The resonance structure includes a sound guide port and a plurality of sound guide channels connected with the sound guide port, and the sound guide port is connected with the front cavity.

In a second aspect, the present application provides an electronic device, including:

The speaker as provided in the first aspect.

In the embodiment of the present application, the loudspeaker includes a casing, a sounding unit and a resonant structure, the sounding unit and the resonant structure are all arranged in the casing, the casing includes a front cavity and a rear cavity, and the casing is provided with a front cavity and a The connected sound outlet, the sound unit corresponds to the front chamber, and then the structure causes the air in the front chamber to vibrate, generate sound waves, and pass through the sound outlet, thereby realizing sound generation.

Moreover, a resonant structure is also provided in the front cavity of the housing, the resonant structure includes a sound guide port and a plurality of sound guide channels, and the sound guide port is connected to a plurality of sound guide channels, which can be directly connected or indirectly connected, Moreover, the sound guide port is also connected with the front cavity, and the sound waves in the front cavity can enter multiple sound guide channels through the sound guide port, so that the sound wave of the target frequency can be absorbed by the reflection of the sound wave in the multiple sound guide channels , reduce the high-frequency peak in the frequency response curve, and improve the effect of speaker audio playback.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 shows a cross-sectional view of a speaker provided by an embodiment of the present application;

FIG. 2 shows a cross-sectional view of a resonant structure in a speaker provided by an embodiment of the present application;

Fig. 3 shows a schematic diagram of a resonant structure in a loudspeaker provided by an embodiment of the present application;

FIG. 4 shows a cross-sectional view of a speaker provided by an embodiment of the present application;

Fig. 5 shows a schematic diagram of a resonant structure in a loudspeaker provided by an embodiment of the present application.

Figure 1 to Figure 5 reference signs:

100 speaker, 110 shell, 112 front cavity, 114 rear cavity, 116 sound outlet, 120 sound unit, 130 resonance structure, 132 sound guide port, 134 sound guide channel, 136 resonance film, 138 enclosure plate, 140 cover plate, 142 partitions.

Detailed ways

Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, are only for explaining the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The features of the terms "first" and "second" in the description and claims of the present application may explicitly or implicitly include one or more of these features. In the description of the present application, unless otherwise specified, "plurality" means two or more. In addition, "and/or" in the specification and claims means at least one of the connected objects, and the character "/" generally means that the related objects are an "or" relationship.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "inner", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed, or operate in a particular orientation, and thus should not be construed as limiting the application.

In the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.

A speaker 100 and an electronic device according to an embodiment of the present application are described below with reference to FIGS. 1 to 5 .

As shown in Figures 1 and 4, the present application provides a speaker 100, including: a housing 110, the housing 110 includes a front chamber 112 and a rear chamber 114, and a sound outlet 116 communicating with the front chamber 112; The unit 120 is set in the housing 110, and the sound unit 120 is set correspondingly to the front cavity 112; the resonance structure 130 is set in the front cavity 112, and the resonance structure 130 includes a sound guide port 132 and a sound guide port 132. A plurality of sound guiding channels 134 , the sound guiding port 132 communicates with the front chamber 112 .

In the embodiment of the present application, the loudspeaker 100 includes a housing 110, a sounding unit 120 and a resonant structure 130, both the sounding unit 120 and the resonant structure 130 are arranged in the housing 110, and the housing 110 includes a front cavity 112 and a rear cavity 114, Moreover, the shell 110 is provided with a sound outlet 116 communicating with the front chamber 112, and the sound unit 120 corresponds to the front chamber 112, and then the structure causes the air in the front chamber 112 to vibrate to generate sound waves, which are transmitted by the sound outlet. 116 to go out, thereby realize sounding.

In a dissipative system, frictional power and elastic deformation energy are linearly related. In order to increase dissipation, the usual method is to increase energy density, which can be achieved by using the sound guiding channel 134 in the resonant structure 130 .

The resonance structure 130 includes a sound guide port 132 and a plurality of sound guide channels 134. The sound guide port 132 is connected to the sound guide channels 134, which can be directly connected or indirectly connected, and the sound guide port 132 is also connected to the front chamber 112. The sound wave in the front cavity 112 can then enter the multiple sound guide channels 134 through the sound guide port 132, so that the sound wave of the target frequency can be absorbed by the reflection of the sound wave in the multiple sound guide channels 134, and the frequency response curve can be reduced. High-frequency peaks to enhance the effect of speaker audio playback.

Wherein, the sound generating unit 120 includes a diaphragm, and the vibration of the diaphragm makes the air in the front cavity 112 vibrate to form sound waves, which are transmitted to the outside of the speaker 100 through the sound outlet 116 .

And, the target frequency band can be the frequency band from 4kHz to 6kHz. The resonant structure 130 used in this application can absorb the sound wave energy of the formant in the frequency band from 4kHz to 6kHz in a small space occupation, and reduce the energy of the tooth sound in the playback audio. Improve the audio playback effect and enhance the user's sense of hearing.

As shown in FIG. 4 and FIG. 5 , as a possible implementation manner, the resonant structure 130 further includes: a resonant film 136 disposed at the sound guide port 132 .

Specifically, a resonant film 136 is provided at the sound guide port 132 of the resonant structure, and the resonance between the resonant film 136 and the incident sound wave is used to achieve impedance matching and improve the sound absorption efficiency of the entire resonant structure 130 .

Wherein, the resonant frequency of the resonant membrane 136 and the frequency band suppression that requires the characteristics of sound absorption make the sound wave of the target frequency band resonantly couple with the resonant membrane 136 . Due to the small size of the sound guide port 132, it may cause a sudden change in the propagation section of the sound wave at the sound guide port 132, which affects impedance matching. Resonance is used to achieve impedance matching and improve the sound absorption efficiency of the resonant structure 130 .

Moreover, the resonant film 136 covers the sound guide port 132 , the material of the resonant film 136 can be metal or rubber, and the fixing method can use glue to fix the resonant film 136 on the inner wall of the sound guide port 132 .

As shown in FIGS. 1 and 4 , as a possible implementation, the sound outlet 116 is located on the side wall of the front chamber 112 , and the resonance structure 130 is located on the side of the sound outlet 116 away from the rear chamber 114 .

Specifically, the sound outlet 116 is set on the side wall of the front cavity 112 and is not facing the sound unit 120 , so that high-frequency sound waves can form a formant in the front cavity 112 to expand the effective frequency band and improve the sound effect of the speaker 100 .

And, the resonant structure 130 is arranged on the side of the sound outlet 116 away from the rear cavity 114, since the transmission of the sound wave is in the front cavity 112 through the sound outlet 116 to the outside, therefore, the resonant structure 130 is arranged on the sound outlet 116 The side away from the rear cavity 114 can make it easier for sound waves to enter the sound guide channel 134 through the sound guide port 132 , and improve the absorption effect of the resonant structure 130 on sound waves of the target frequency band.

And, such an arrangement makes the resonant structure 130 far away from the rear cavity 114 , reducing the possibility of mutual influence between the resonant structure 130 and the rear cavity 114 .

As a possible implementation manner, multiple sound guide channels 134 are distributed along the direction from the sound outlet to the front cavity.

Specifically, a plurality of sound guide channels 134 are distributed along the direction from the sound outlet to the front cavity, so that the thickness of the entire resonant structure 130 is thinner, thereby reducing the overall thickness of the speaker 100 and reducing the volume of the speaker 100, and such The resonance structure 130 can increase the thickness of the casing 110 and increase the structural strength of the speaker 100 .

As shown in FIG. 1 and FIG. 4 , as a possible implementation manner, the sound guide port 132 is disposed on the side of the resonance structure 130 facing the rear cavity 114 .

Specifically, the sound guide port 132 is arranged on the side of the resonant structure 130 facing the rear cavity 114, that is, the sound guide port 132 faces the sound unit 120, so that sound waves can enter the sound guide channel 134 through the sound guide port 132 to enhance resonance. The absorption effect of the structure 130 on sound waves.

And, such an arrangement makes the resonant structure 130 far away from the rear cavity 114 , reducing the possibility of mutual influence between the resonant structure 130 and the rear cavity 114 .

As a possible implementation manner, a plurality of sound guiding channels 134 are sequentially connected to form a bent shape.

Specifically, a plurality of sound guiding channels 134 are connected sequentially, and the sound guiding channel 134 at the end is connected to the sound outlet 116, and the whole of the plurality of sound guiding channels 134 is bent, and the same space is occupied. , the curved sound guide channel 134 has a longer propagation distance, thereby increasing the number of reflections of sound waves, improving the absorption efficiency of sound waves of the target frequency, and not only viscous attenuation will occur at the sound guide port 132, but also in the bent shape The bend of the sound guide channel 134, that is, the connection of adjacent sound guide channels 134, can also produce viscous attenuation, reduce the equivalent sound velocity, reduce the resonance frequency, and improve the absorption performance of the sound wave of the target frequency. It is beneficial to reduce the high-frequency peak in the frequency response curve and improve the audio playback effect of the loudspeaker 100 .

Specifically, under the same space occupation, the curved sound-guiding channel 134 should have a longer sound-guiding channel 134 than structures such as Helmholtz cavity. Therefore, in order to achieve the same sound absorption effect, The bent sound guide channel 134 has a smaller volume and occupies less space, which is beneficial to the miniaturization of the speaker 100 and thinner and lighter electronic equipment. Among them, based on the use of the bent sound-guiding channel 134, the minimum thickness H of the resonant structure 130 is only 1/200th of the wavelength of the target resonant frequency. While improving the efficiency, the thickness of the structure is effectively reduced.

As a possible implementation manner, the extension directions of the plurality of sound guiding channels 134 are the same.

Specifically, the plurality of sound guiding channels 134 extend in the same direction, thereby reducing the space occupied by the sound guiding channels 134 , making the resonant structure miniaturized, and reducing the volume of the speaker 100 .

Wherein, a plurality of sound guide channels 134 are distributed side by side, and adjacent sound guide channels 134 are provided with openings at positions close to the ends, so that adjacent sound guide channels 134 are connected, and the same sound guide channel 134 and two The position where the adjacent sound guiding channels 134 on the side are connected is located at both ends thereof, so that the plurality of sound guiding channels 134 form a bent shape.

As shown in Figures 1 to 5, as a possible implementation, the resonant structure 130 includes: a surrounding plate 138 disposed on the housing 110; a cover plate 140 disposed on the surrounding plate 138, and the sound guide port 132 is disposed The cover plate 140 and the partition plate 142 are arranged between the surrounding plate 138 and the housing 110 and are located inside the surrounding plate 138 to form a bent sound guiding channel 134 .

Specifically, the resonant structure 130 includes a surrounding plate 138, a cover plate 140 and a partition 142. The surrounding plate 138 is arranged on the housing 110, and the cover plate 140 is covered on the surrounding plate 138, so that the housing 110, the surrounding plate 138 and the cover The board 140 encloses a space, and a partition 142 is arranged in the space, so as to divide the space into bent sound-guiding channels 134, that is, to divide a larger space into bent-shaped sound-guiding channels 134 , the above method can reduce the manufacturing difficulty of the resonant structure 130 .

Wherein, the setting of the partition plate 142 can improve the structural strength, increase the robustness of the system, and reduce the possibility of structural failure.

Moreover, the separator 142 is made of hard material, such as plastic or metal.

The enclosure 138 and the partition 142 can be an integrated structure. For example, the enclosure 138 and the partition 142 are first produced by integrated injection molding or 3D printing technology, and then the cover 140 with the sound guide port 132 is bonded to the On the enclosure 138 and the cover 140.

As shown in FIG. 2 , FIG. 3 and FIG. 5 , the sound guide port 132 is located at a corner of the cover plate 140 , and the sound guide port 132 is located at one end of the sound guide channel 134 .

Specifically, the sound guide port 132 is disposed at a corner of the cover plate 140 , that is, the sound guide port 132 is located at a corner of the cover plate 140 , thereby increasing the effective length of the sound guide channel 134 and improving the absorption efficiency of sound waves in the target frequency band.

Specifically, the sound wave in the front cavity 112 enters the multiple sound-guiding channels 134 in the bent-shaped folded space through the sound-guiding opening 132 at the corner of the cover plate 140. The viscous loss of the sound wave also occurs at the corner, and most of the viscous loss of the Helmholtz resonant cavity occurs near the sound guide port 132 . Therefore, under the same volume, the bent sound guide channel 134 has a larger viscous loss than the Helmholtz cavity structure, which means that at the same frequency point, the bent sound guide channel 134 has a larger viscous loss than the Helmholtz cavity structure. The resonant structure 130 in the related art requires less space. By matching the resonant frequency of the bent sound-guiding channel 134 with the high-frequency formant in the frequency response curve of the speaker 100 module, the intensity of the formant is reduced, and the reproduction frequency is reduced. The sound wave energy of the sibilant part in the music improves the playback effect of the speaker 100 and effectively improves the space utilization rate of the electronic equipment.

The sound waves generated by the vibration of the diaphragm of the sound unit 120 pass through the front cavity 112 and reach the sound guide channel 134, and use the resonant sound absorption of multiple bent sound guide channels 134 to reduce the high frequency peak in the frequency response curve and reduce the tooth sound in the audio Part of the energy improves the user experience of using electronic devices to play audio.

Compared with the Helmholtz resonant cavity, the bent multiple sound-guiding channels 134 in the loudspeaker 100 provided by the present application use a smaller volume to reduce the high-frequency resonance peak, without adding additional thickness, and improve the audio frequency of the electronic device At the same time, because of the existence of the partition 142, the structural strength is enhanced, the robustness of the system is improved, and the risk of structural failure is reduced.

As shown in FIG. 2 and FIG. 5 , as a possible implementation manner, one end of the partition 142 is connected to the enclosure 138 , and the other end is spaced apart from the enclosure 138 .

Specifically, one end of the partition 142 is connected to the enclosure 138, and the other end is spaced from the enclosure 138, that is, the sound guide channel 134 on both sides of the partition 142 forms at least a "U" shape, and the sound guide channel 134 forms a fold The structure of the space can further increase the length of the sound guiding channel 134 and improve the absorption efficiency of the target sound wave.

The sound wave can generate viscous attenuation at the space between the partition plate 142 and the surrounding plate 138, so as to improve the sound absorption efficiency of the target frequency sound wave.

As shown in Figures 1 to 5, the number of partitions 142 is at least two, and at least two partitions 142 are spaced between the surrounding board 138 and the housing 110 to form a bent sound guide. Channel 134.

Specifically, the number of partitions 142 is at least two, and the at least two partitions 142 are arranged at intervals, so as to improve the utilization rate of the space and improve the absorption efficiency of the target sound wave.

Wherein, the number of partitions 142 may be two, three, four or five, etc., and the partitions 142 may be straight or curved.

As shown in FIG. 2 , FIG. 3 and FIG. 5 , the adjacent partitions 142 are respectively connected to the opposite side walls of the enclosure 138 .

Specifically, the adjacent partitions 142 are respectively connected to the opposite side walls of the surrounding board 138, that is, the adjacent partitions 142 are arranged in the surrounding board 138 in an offset manner, thereby further improving the sound guide channel 134. The length of the resonant structure 130 further improves the absorption efficiency of the sound wave in the characteristic frequency band.

Of course, in other embodiments of the present application, other sound guide channels 134 with curved paths, such as a labyrinth space configuration, may also be configured according to actual conditions.

The present application provides an electronic device, including: the speaker 100 provided in the embodiment of the first aspect.

The electronic device provided in the present application includes the speaker 100 provided in the embodiment of the first aspect, therefore, has all the beneficial effects of the speaker 100 provided in the embodiment of the first aspect, and will not be stated here one by one.

Specifically, while improving the loudspeaker 100's loudspeaker effect, the speaker 100 also minimizes the use of space in the electronic device, effectively improving the space utilization rate, and providing more possibilities for the design of other structures or sensors.

As a possible implementation manner, the electronic device includes a mobile phone, a tablet computer, a notebook computer, a wearable device, a display, an audio system, and the like.

In the description of this specification, the description referring to the term "one embodiment" or "specific embodiment" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one implementation of the application. example or examples. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims (10)

1. A loudspeaker, comprising:

the shell comprises a front cavity and a rear cavity, and an acoustic outlet communicated with the front cavity;

the sound generating unit is arranged in the shell and is correspondingly arranged with the front cavity;

the resonance structure is arranged in the front cavity and comprises a sound guide port and a plurality of sound guide channels communicated with the sound guide port, and the sound guide port is communicated with the front cavity.

2. The loudspeaker of claim 1, wherein the resonating structure further comprises:

and the co-vibrating diaphragm is arranged at the sound guide opening.

3. A loudspeaker according to claim 1, wherein,

the sound outlet is positioned on the side wall of the front cavity, and the resonance structure is positioned on one side of the sound outlet, which is away from the rear cavity.

4. A loudspeaker according to claim 3, wherein,

the plurality of sound guide channels are distributed along the direction from the sound outlet to the front cavity.

5. A loudspeaker according to claim 1, wherein,

the sound guide port is arranged on one side of the resonance structure, which faces the rear cavity.

6. A loudspeaker according to any one of claims 1 to 5,

the plurality of sound guide channels are sequentially communicated to form a bending shape.

7. A loudspeaker according to any one of claims 1 to 5,

the extending directions of the plurality of sound guide channels are the same.

8. The loudspeaker of any one of claims 1 to 5, wherein the resonant structure comprises:

the coaming is arranged on the shell;

the cover plate is covered on the coaming, and the sound guide opening is formed in the cover plate;

the baffle is arranged between the coaming and the shell and is positioned in the coaming so as to form the bending-shaped sound guide channel.

9. A loudspeaker according to claim 8, wherein,

one end of the partition board is connected with the coaming, and the other end of the partition board is spaced from the coaming.

10. An electronic device, comprising:

a loudspeaker according to any one of claims 1 to 9.

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