CN218336372U - Noise reduction loudspeaker structure and earphone - Google Patents

Abstract

The application provides a loudspeaker structure and earphone of making an uproar falls. The noise reduction horn structure comprises a horn component and a micro-electric sound transmission component; the loudspeaker assembly comprises a loudspeaker diaphragm, a front cavity, a loudspeaker piece, a packaging cup and a rear cavity, a packaging space is formed between the loudspeaker diaphragm and the packaging cup, the front cavity and the loudspeaker piece are both arranged in the packaging space, the packaging cup comprises a cup body and an amplitude limiting ring which are mutually connected, the amplitude limiting ring is positioned in the packaging space, the amplitude limiting ring is arranged close to the loudspeaker piece, and the rear cavity is connected with the cup body; the micro-electric sound transmission component is arranged in the packaging space, is electrically connected with the horn piece and is further connected with the front cavity. The amplitude limiting ring is arranged on one side, close to the horn piece, of the cup body, and limits the amplitude of the horn piece when the horn piece outputs a reverse noise reduction signal, so that the too large amplitude of the horn piece is avoided, the amplitude of the horn piece is effectively reduced, the vibration balance of the horn piece is realized, and the noise reduction path stability is effectively improved.

Description

Noise reduction loudspeaker structure and earphone

Technical Field

The utility model relates to an earphone technical field especially relates to a loudspeaker structure and earphone of making an uproar falls.

Background

With the technological innovation of the electroacoustic industry, earphones gradually become new electronic products, and the technical content is higher and higher, so that some related electronic technologies are promoted to be applied to earphones, wherein feedback noise reduction and feedforward noise reduction are included. Manufacturers introduce anti-noise reduction technology or feedforward noise reduction into earphones in order to cater for electric sound development, wherein feedback noise reduction is realized by internally arranging a feedback MIC (microphone), collecting noise around ears and inside auditory canals so as to transmit the noise into an algorithm chip, and sending opposite signals through a loudspeaker to offset the noise.

However, the noise reduction path of the conventional speaker and feedback MIC coupling cavity is unstable, which easily results in poor user experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide a effectively improve the loudspeaker structure and the earphone of making an uproar route stability.

The purpose of the utility model is realized through the following technical scheme:

a noise reducing horn structure comprising: a horn assembly and a micro-electro-acoustic assembly; the loudspeaker assembly comprises a loudspeaker diaphragm, a front cavity, a loudspeaker piece, a packaging cup and a rear cavity, a packaging space is formed between the loudspeaker diaphragm and the packaging cup, the front cavity and the loudspeaker piece are arranged in the packaging space, the front cavity is used for outputting reverse noise reduction sound signals to the loudspeaker piece, the packaging cup comprises a cup body and an amplitude limiting ring which are connected with each other, the amplitude limiting ring is located in the packaging space and is arranged close to the loudspeaker piece, the rear cavity is connected with the cup body, and the rear cavity is used for collecting the reverse noise reduction sound signals played by the loudspeaker piece; little biography sound subassembly set up in the encapsulation space, little biography sound subassembly with loudspeaker spare electricity is connected, little biography sound subassembly still with preceding cavity connection, little biography sound subassembly is used for making an uproar to sound signal's sampling and feedback.

In one embodiment, the packaging cup is provided with a first through hole, the first through hole is communicated with the packaging space, and the first through hole is used for providing balanced air pressure for the loudspeaker diaphragm.

In one embodiment, the middle of the limiting ring is aligned with the first through hole.

In one embodiment, the package cup is provided with a second through hole, the second through hole is communicated with the package space, and the opening direction of the second through hole is the same as that of the first through hole.

In one embodiment, the horn piece comprises a copper ring, a horn voice coil, a horn bracket, a washer and a magnet which are arranged in sequence, the copper ring is connected with the micro-electro-acoustic assembly through the front cavity, the horn voice coil is connected with the inner wall of the packaging space, the loudspeaker voice coil is still with little electricity transaudient subassembly is connected, the loudspeaker voice coil seted up with the third through-hole of first through-hole intercommunication, the loudspeaker support with preceding cavity sets up relatively, the china department is located the encapsulation cup with between the loudspeaker voice coil, magnet set up in on the loudspeaker voice coil.

In one embodiment, the micro electro-acoustic assembly includes a micro electrical sensor and a feedback noise reduction circuit cover electrically connected to each other, the speaker voice coil is provided with a fourth through hole, the feedback noise reduction circuit cover is disposed in the fourth through hole in a penetrating manner, and the front cavity and the copper ring are accommodated in the feedback noise reduction circuit cover.

In one embodiment, the limiter ring is provided with a clamping groove, and at least part of the rear cavity is clamped in the clamping groove.

In one embodiment, the package cup defines a limiting groove communicating with the engaging groove, and the speaker assembly further includes a limiting plate disposed in the limiting groove and abutting against the rear cavity.

In one embodiment, the horn assembly further comprises a noise reduction output circuit board, and the noise reduction output circuit board is connected with the rear cavity.

An earphone comprises the noise reduction horn structure of any one of the above embodiments.

Compared with the prior art, the utility model discloses at least, following advantage has:

the amplitude limiting ring is arranged on one side, close to the horn piece, of the cup body, when the horn piece outputs a reverse noise reduction signal, the amplitude limiting ring limits the amplitude of the horn piece, the amplitude of the horn piece is avoided to be too large, the amplitude of the horn piece is effectively reduced, the vibration of the horn piece is balanced, and the noise reduction path stability is effectively improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a noise reduction horn configuration in an embodiment;

FIG. 2 is an exploded view of the noise reduction horn of FIG. 1;

fig. 3 is an enlarged schematic view of the noise reduction horn structure shown in fig. 1 at A1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model relates to a loudspeaker structure of making an uproar falls. In one embodiment, the noise reduction horn structure comprises a horn assembly and a micro electro-acoustic assembly. The loudspeaker assembly comprises a loudspeaker diaphragm, a front cavity, a loudspeaker piece, a packaging cup and a rear cavity. The loudspeaker diaphragm with be formed with the encapsulation space between the encapsulation cup, preceding cavity with loudspeaker spare all set up in the encapsulation space, preceding cavity is used for to loudspeaker spare output is reversed and is fallen the noise sound signal. The packaging cup comprises a cup body and a limiting ring which are connected with each other. The limiting ring is located in the packaging space, and the limiting ring is close to the horn piece. The rear cavity is connected with the cup body and used for collecting reverse noise reduction sound signals played by the horn piece. Little biography sound subassembly set up in the encapsulation space, little biography sound subassembly with loudspeaker spare electricity is connected, little biography sound subassembly still with preceding cavity connection, little biography sound subassembly is used for making an uproar to sound signal's sampling and feedback. The amplitude limiting ring is arranged on one side, close to the horn piece, of the cup body, and limits the amplitude of the horn piece when the horn piece outputs a reverse noise reduction signal, so that the too large amplitude of the horn piece is avoided, the amplitude of the horn piece is effectively reduced, the vibration balance of the horn piece is realized, and the noise reduction path stability is effectively improved.

Please refer to fig. 1, which is a schematic structural diagram of a noise reduction speaker structure according to an embodiment of the present invention.

The noise reducing horn structure 10 of one embodiment includes a horn assembly 100. Referring to fig. 2, the noise reduction horn structure 10 further includes a micro electro acoustic transducer 200. The horn assembly 100 includes a horn diaphragm 110, a front cavity 120, a horn 130, a packaging cup 140, and a rear cavity 150. A packaging space is formed between the speaker diaphragm 110 and the packaging cup 140, the front cavity 120 and the speaker 130 are both disposed in the packaging space, and the front cavity 120 is configured to output a reverse noise reduction sound signal to the speaker 130. The encapsulation cup 140 includes an interconnected cup body 142 and a limiter ring 144. The limiter ring 144 is located in the packaging space, and the limiter ring 144 is disposed near the speaker 130. The rear cavity 150 is connected to the cup body 142, and the rear cavity 150 is used for collecting a reverse noise reduction sound signal played by the horn 130. Little acoustic subassembly 200 set up in the encapsulation space, little acoustic subassembly 200 with loudspeaker piece 130 electricity is connected, little acoustic subassembly 200 still with preceding cavity 120 is connected, little acoustic subassembly 200 is used for making an uproar falls in sampling and the feedback of sound signal.

In this embodiment, the limiter ring 144 is disposed on one side of the cup 142 close to the trumpet 130, and when the trumpet 130 outputs a reverse noise reduction signal, the limiter ring 144 limits the amplitude of the trumpet 130, so as to avoid the too large amplitude of the trumpet 130, and effectively reduce the amplitude of the trumpet 130, so that the vibration of the trumpet 130 is balanced, and the stability of the noise reduction path is effectively improved.

In one embodiment, referring to fig. 2, the package cup 140 is formed with a first through hole 104, the first through hole 104 is communicated with the package space, and the first through hole 104 is used for providing balanced air pressure to the speaker diaphragm 110. In this embodiment, the first through hole 104 communicates the package space with the external environment, so that the speaker diaphragm 110 is located in the package space, and one side of the speaker diaphragm 110 is also in contact with the external air, so that two side surfaces of the speaker diaphragm 110 are in contact with the external air, and the air pressures on two sides of the speaker diaphragm 110 are balanced, thereby effectively reducing the probability of irregular change of the speaker diaphragm 110, particularly reducing the probability of deformation of the suction film of the speaker diaphragm 110, and effectively improving the noise reduction path stability of the noise reduction speaker structure.

Further, referring to fig. 2, the middle portion of the amplitude limiting ring 144 is aligned with the first through hole 104, and the amplitude limiting ring 144 has an annular structure, that is, the middle portion of the amplitude limiting ring 144 has a hollow structure. The middle of the limiting ring 144 is aligned with the first through hole 104, so that the middle of the limiting ring 144 is also communicated with the outside, and external air pressure is conveniently guided to the horn diaphragm 110 through the first through hole 104.

Still further, referring to fig. 2, the package cup 140 is provided with a second through hole 106, the second through hole 106 is communicated with the package space, and the opening direction of the second through hole 106 is the same as the opening direction of the first through hole 104. In this embodiment, the second through hole 106 is used as an auxiliary through hole for the packaging cup 140, on one hand, the gas introduced into the packaging space by the packaging cup 140 is increased, and the gas pressure on the side of the horn diaphragm 110 close to the packaging cup 140 is ensured; on the other hand, the second through hole 106 is disposed such that the packaging cup 140 has a hollow structure, thereby reducing the overall weight of the packaging cup 140.

In another embodiment, referring to fig. 2, the horn 130 includes a copper ring 132, a horn voice coil 134, a horn support 136, a washer (not shown) and a magnet 131, which are sequentially disposed, the copper ring 132 is connected to the micro electro-acoustic component 200 through the front cavity 120, the horn voice coil 134 is connected to an inner wall of the package space, the horn voice coil 134 is further connected to the micro electro-acoustic component 200, the horn voice coil 134 is provided with a third through hole communicated with the first through hole 104, the horn support 136 is disposed opposite to the front cavity 120, the washer is located between the package cup 140 and the horn voice coil 134, and the magnet 131 is disposed on the horn voice coil 134. In this embodiment, the front cavity 120 receives the reverse noise reduction sound signal output by the micro electro-acoustic assembly 200, and the vibration of the copper ring 132 facilitates the speaker coil 134 to output the reverse noise reduction sound signal to the rear cavity 150. The third through hole formed in the horn voice coil 134 is communicated with the first through hole 104, and the horn voice coil 134 is clamped in the packaging space, so that external air can be guided to the horn diaphragm 110 through the third through hole, and air pressure balance of the horn diaphragm 110 is ensured. The washer may be a spring washer, and the magnet 131 and the copper ring 132 generate a vibration magnetic field.

Further, referring to fig. 2, the micro electro-acoustic assembly 200 includes a micro sensor 210 and a feedback noise reduction circuit cover 220 electrically connected to each other, the speaker coil 134 is provided with a fourth through hole 108, the feedback noise reduction circuit cover 220 is disposed in the fourth through hole 108 in a penetrating manner, and the front cavity 120 and the copper ring 132 are accommodated in the feedback noise reduction circuit cover 220. In this embodiment, the micro-electrical sensor 210 is configured to collect a sound signal generated by the vibration of the horn diaphragm 110, specifically, the micro-electrical sensor 210 is a MEMS sensor, and the processing chip on the feedback noise reduction circuit cover 220 performs feedback noise reduction processing on the sound signal, so as to output a reverse noise reduction sound signal, so that the horn 130 outputs a signal for canceling noise. The feedback noise reduction circuit cover 220 is disposed in the fourth through hole 108, so that the feedback noise reduction circuit cover 220 can mount the front cavity 120 and the copper ring 132 on the speaker coil 134. In another embodiment, the feedback noise reduction circuit cover 220 is opened with a fifth through hole communicated with the first through hole 104, so as to guide the external air to the horn diaphragm 110. Moreover, in other embodiments, the front cavity 120 defines a sixth through hole in communication with the fifth through hole, and the sixth through hole is in communication with the middle portion of the copper ring 132.

In one embodiment, referring to fig. 3, the limiter ring 144 is provided with a clamping groove 101, and at least a portion of the rear cavity 150 is clamped in the clamping groove 101. In this embodiment, joint groove 101 is located on the amplitude limiting ring 144, amplitude limiting ring 144 set up stably in on the encapsulation cup 140, will back cavity 150 card is established in the joint groove 101, make back cavity 150 with amplitude limiting ring 144 is stably connected, thereby makes back cavity 150 set up stably in on the encapsulation cup 140, improved effectively back cavity 150's installation stability has further improved the route stability of making an uproar falls of making an uproar horn structure falls.

Further, referring to fig. 3, the packaging cup 140 is provided with a limiting groove 103 communicated with the clamping groove 101, the horn assembly 100 further includes a limiting plate 160, and the limiting plate 160 penetrates through the limiting groove 103 and abuts against the rear cavity 150. In this embodiment, the limiting groove 103 is communicated with the clamping groove 101, the limiting plate 160 is disposed in the limiting groove 103, the limiting plate 160 is clamped in the limiting groove 103, and meanwhile, the rear cavity 150 is abutted against the clamping groove 101, so that the connection between the rear cavity 150 and the packaging cup 140 is more stable.

In one embodiment, referring to fig. 3, the horn assembly 100 further includes a noise reduction output circuit board 170, and the noise reduction output circuit board 170 is connected to the rear cavity 150. In this embodiment, the noise reduction output circuit board 170 is configured to be connected to an audio output controller, so as to output the audio signal output by the rear cavity 150 after the reverse noise reduction processing. Wherein the rear cavity 150 may be a feedback noise reduction microphone.

In one embodiment, the present application further provides an earphone including the noise reduction speaker structure according to any one of the above embodiments. In this embodiment, the noise reduction horn structure includes a horn assembly and a micro electro-acoustic assembly. The loudspeaker assembly comprises a loudspeaker diaphragm, a front cavity, a loudspeaker piece, a packaging cup and a rear cavity. The loudspeaker diaphragm with be formed with the encapsulation space between the encapsulation cup, preceding cavity with loudspeaker spare all set up in the encapsulation space, preceding cavity is used for to loudspeaker spare output is reversed and is fallen the noise sound signal. The encapsulation cup comprises a cup body and an amplitude limiting ring which are connected with each other. The limiting ring is located in the packaging space, and the limiting ring is close to the horn piece. The rear cavity is connected with the cup body and used for collecting reverse noise reduction sound signals played by the horn piece. Little biography sound subassembly set up in the encapsulation space, little biography sound subassembly with loudspeaker spare electricity is connected, little biography sound subassembly still with preceding cavity connection, little biography sound subassembly is used for making an uproar to sound signal's sampling and feedback. The amplitude limiting ring is arranged on one side, close to the horn piece, of the cup body, and limits the amplitude of the horn piece when the horn piece outputs a reverse noise reduction signal, so that the too large amplitude of the horn piece is avoided, the amplitude of the horn piece is effectively reduced, the vibration balance of the horn piece is realized, and the noise reduction path stability is effectively improved.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A noise-reducing horn structure, comprising:

the loudspeaker assembly comprises a loudspeaker diaphragm, a front cavity, a loudspeaker piece, a packaging cup and a rear cavity, a packaging space is formed between the loudspeaker diaphragm and the packaging cup, the front cavity and the loudspeaker piece are arranged in the packaging space, the front cavity is used for outputting reverse noise reduction sound signals to the loudspeaker piece, the packaging cup comprises a cup body and an amplitude limiting ring which are connected with each other, the amplitude limiting ring is located in the packaging space and is close to the loudspeaker piece, the rear cavity is connected with the cup body, and the rear cavity is used for collecting the reverse noise reduction sound signals played by the loudspeaker piece;

little biography sound subassembly, little biography sound subassembly set up in the encapsulation space, little biography sound subassembly with loudspeaker spare electricity is connected, little biography sound subassembly still with preceding cavity coupling, little biography sound subassembly is used for making an uproar to sound signal's sampling and feedback.

2. The noise reduction horn structure of claim 1, wherein the encapsulation cup defines a first through hole, the first through hole is communicated with the encapsulation space, and the first through hole is used for providing balanced air pressure for the horn diaphragm.

3. The noise reducing horn structure of claim 2, wherein the middle portion of the limiter ring is aligned with the first through hole.

4. The noise reduction horn structure of claim 2, wherein the encapsulation cup is provided with a second through hole, the second through hole is communicated with the encapsulation space, and the opening direction of the second through hole is the same as the opening direction of the first through hole.

5. The noise reduction horn structure of claim 2, wherein the horn member comprises a copper ring, a horn voice coil, a horn support, a washer and a magnet, the copper ring is connected with the micro-electricity sound transmission assembly through the front cavity, the horn voice coil is connected with the inner wall of the packaging space, the horn voice coil is further connected with the micro-electricity sound transmission assembly, the horn voice coil is provided with a third through hole communicated with the first through hole, the horn support and the front cavity are arranged oppositely, the washer is located between the packaging cup and the horn voice coil, and the magnet is arranged on the horn voice coil.

6. The noise reduction horn structure of claim 5, wherein the micro electro acoustic assembly comprises a micro electro sensor and a feedback noise reduction circuit cover electrically connected to each other, the horn voice coil is provided with a fourth through hole, the feedback noise reduction circuit cover is disposed in the fourth through hole, and the feedback noise reduction circuit cover accommodates the front cavity and the copper ring.

7. The noise reduction horn structure of claim 1, wherein the amplitude limiting ring is provided with a clamping groove, and at least a part of the rear cavity is clamped in the clamping groove.

8. The noise reduction horn structure of claim 7, wherein the encapsulation cup defines a limiting groove communicating with the clamping groove, and the horn assembly further comprises a limiting plate, the limiting plate is disposed in the limiting groove and abuts against the rear cavity.

9. The noise reducing horn structure of claim 1, wherein the horn assembly further comprises a noise reducing output circuit board, the noise reducing output circuit board being connected to the rear cavity.

10. A headset comprising a noise reducing horn structure as claimed in any one of claims 1 to 9.

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