CN212163695U

CN212163695U - Loudspeaker and detection system thereof

Info

Publication number: CN212163695U
Application number: CN202021114657.8U
Authority: CN
Inventors: 张韬; 闫鑫; 赵洪强
Original assignee: KING TONE INNOVATION
Current assignee: KING TONE INNOVATION
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-12-15
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a speaker and detecting system thereof, the speaker includes vibration mechanism, magnetic circuit mechanism, microphone subassembly and is used for the basin frame of fixed vibration mechanism and magnetic circuit mechanism, and vibration mechanism includes voice coil loudspeaker voice coil and vibrating diaphragm, and magnetic circuit mechanism sets up in one side of vibration mechanism, and the microphone subassembly includes the microphone, and the microphone is connected between vibration mechanism and magnetic circuit mechanism, from this, realizes the integration of microphone and speaker body structure, improves the wholeness of speaker structure.

Description

Loudspeaker and detection system thereof

Technical Field

The utility model relates to an electronic equipment field, concretely relates to speaker and detecting system thereof.

Background

A speaker is an indispensable component of portable electronic devices such as mobile phones and radios as a common electroacoustic transducer. When the loudspeaker is actually used, whether the loudspeaker is in a normal working state or not is detected through the microphone, and the audio signal output by the loudspeaker is subjected to nonlinear control and protection through the detection circuit in the loudspeaker, so that the loudspeaker can adjust the output frequency response in time under the condition of distortion of the output sound signal, and good listening experience is brought to a user.

However, in the existing speaker detection circuit, the microphone is usually disposed separately from the speaker or mounted at the sound outlet of the earphone, and such a mounting manner can collect the frequency response of the sound signal output from the inside of the speaker or the earphone core, but the accuracy is low, and the overall structure of the speaker is complex and poor, and the structure needs to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above, an object of the present invention is to provide a speaker and a detection system thereof, so as to improve the structural integrity of the speaker and the accuracy of detecting the frequency response of the sound signal output by the speaker.

In a first aspect, an embodiment of the present invention provides a speaker, including:

the vibration mechanism comprises a voice coil and a vibrating diaphragm;

the magnetic circuit mechanism is arranged on one side of the vibration mechanism and used for providing a magnetic field for the voice coil so as to drive the vibrating diaphragm to vibrate to generate sound when the voice coil passes through current;

the microphone assembly comprises a microphone, the microphone is connected between the vibration mechanism and the magnetic circuit mechanism and is used for collecting the sound generated by the vibrating diaphragm; and

a tub holder configured to fix the vibration mechanism and the magnetic circuit mechanism.

Further, the magnetic circuit mechanism includes:

a magnet; and

the magnetic bowl is connected to one side of the magnet and used for accommodating and fixing the magnet;

the magnetic bowl is provided with a first mounting hole, the magnet is provided with a second mounting hole corresponding to the first mounting hole, and the microphone is arranged in a space formed by the first mounting hole and the second mounting hole.

Further, the magnetic circuit mechanism further includes:

and the top plate is connected to one side of the magnet opposite to the magnetic bowl.

Further, the vibration mechanism further includes:

and the voice coil framework is used for connecting the voice coil and the vibrating diaphragm.

Further, the microphone assembly further includes:

a support for fixing the microphone; and

the flexible circuit board is electrically connected with the microphone through the supporting piece.

Further, the speaker further includes:

the circuit board is connected to one side of the basin stand; the circuit board is a welding plate, a flexible circuit board or a printed circuit board.

Further, one side of basin frame is provided with the holding tank, the holding tank is used for fixing the circuit board.

Further, the speaker further includes:

the screen cloth is connected to one side, adjacent to the circuit board, of the basin frame;

wherein, a plurality of through-holes have been seted up to one side of basin frame, the screen cloth cover the through-hole and with basin frame fixed connection.

Further, the speaker further includes:

the screen cloth and the circuit board are arranged on the same side of the basin frame;

the shape of the mesh is matched with that of one side of the basin frame, and the mesh is in a notch shape at the position corresponding to the accommodating groove;

a plurality of through holes are formed in one side of the basin frame, and the mesh covers the through holes and is fixedly connected with the basin frame.

In a second aspect, an embodiment of the present invention provides a speaker detecting system, the detecting system includes:

a speaker as described above;

the detection unit is connected with the loudspeaker and the microphone and used for detecting working parameters of the loudspeaker and outputting a detection signal;

the signal processor is connected with the detection unit, receives the detection signal and outputs an adjustment signal according to the detection signal; and

and the output unit is connected with the signal processor and the loudspeaker, receives the adjusting signal and outputs the adjusting signal to the loudspeaker.

The utility model discloses technical scheme realizes the integration of microphone and speaker body structure through connecting the microphone between vibration mechanism and magnetic circuit mechanism, improves the wholeness of speaker structure, reduces the sound propagation distance between microphone and the speaker, improves the degree of accuracy that speaker output sound signal's frequency response detected.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of a speaker detection system according to an embodiment of the present invention;

fig. 2 is a signal comparison diagram of the loudspeaker distortion condition according to the embodiment of the present invention;

fig. 3 is a first schematic view of the overall structure of a loudspeaker according to a first embodiment of the present invention;

fig. 4 is a schematic diagram of an overall structure of a speaker according to the first embodiment of the present invention;

fig. 5 is an exploded view of the overall structure of a loudspeaker according to the first embodiment of the present invention;

fig. 6 is a cross-sectional view of the overall structure of a loudspeaker according to the first embodiment of the present invention;

fig. 7 is a schematic structural view of a magnetic bowl according to a first embodiment of the present invention;

fig. 8 is a schematic view of a basin stand structure according to a first embodiment of the present invention;

fig. 9 is a schematic view of the overall structure of a speaker according to a second embodiment of the present invention;

fig. 10 is a second schematic view of the overall structure of the speaker according to the second embodiment of the present invention;

fig. 11 is an exploded view of the overall structure of a speaker according to a second embodiment of the present invention;

fig. 12 is a sectional view of the overall structure of a speaker according to a second embodiment of the present invention;

fig. 13 is a schematic view of a bottom structure of a basin stand according to a second embodiment of the present invention.

In the figure, 100, a speaker; 200. a detection unit; 210. a voltage detection unit; 220. a current detection unit; 221. sampling a resistor; 230. a frequency response detection unit; 300. a signal processor; 400. an output unit; 410. an output module; 420. a variable gain amplifier; 430. a power amplifier; 1. a vibration mechanism; 11. vibrating diaphragm; 111. a dome; 112. folding the ring; 1121. a connecting portion; 12. a voice coil; 13. a voice coil former; 14. a front cover; 2. a magnetic circuit mechanism; 21. a magnetic bowl; 211. a first mounting hole; 212. a flat plate portion; 2121. an installation part; 213. a blocking portion; 2131. a support portion; 22. a magnet; 221. a second mounting hole; 23. a topsheet; 231. a third mounting hole; 3. a basin stand; 31. a fixed part; 32. connecting holes; 33. accommodating grooves; 34. a clamping block; 35. a through hole; 36. mounting grooves; 4. a microphone assembly; 41. a microphone; 42. a support member; 43. a flexible circuit board; 5. a circuit board; 51. an electrode; 6. a connecting member; 61. air holes are formed; 7. and (4) screen cloth.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in detail. It will be apparent to those skilled in the art that the present invention may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Meanwhile, it should be understood that, in the following description, a "circuit" refers to a conductive loop constituted by at least one element or sub-circuit through electrical or electromagnetic connection. When an element or circuit is referred to as being "connected to" another element or element/circuit is referred to as being "connected between" two nodes, it may be directly coupled or connected to the other element or intervening elements may be present, and the connection between the elements may be physical, logical, or a combination thereof. In contrast, when an element is referred to as being "directly coupled" or "directly connected" to another element, it is intended that there are no intervening elements present.

Unless the context clearly requires otherwise, throughout the description, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The detection circuit in the loudspeaker is used for carrying out nonlinear control and protection on the audio signal output by the loudspeaker, so that the loudspeaker can timely adjust the output frequency response under the condition of distorted output sound signals, and good listening experience is brought to a user.

Example one

Fig. 1 is a schematic structural diagram of a speaker detection system according to an embodiment of the present invention. As shown in fig. 1, the speaker detection system of the present embodiment includes a speaker 100, a detection unit 200, a signal processor 300, and an output unit 400. A microphone 41 is disposed within the speaker 100, and the microphone 41 is used to collect sound signals (including the frequency response output by the speaker) played by the speaker 100. The detection unit 200, the signal processor 300, and the output unit 400 constitute a detection circuit of the speaker detection system of the present embodiment. The detecting unit 200 is connected to the speaker 100 and the microphone 41, and is configured to detect an operating parameter of the speaker 100 and output a detection signal. The signal processor 300 is connected to the detection unit 200, receives the detection signal, and outputs an adjustment signal according to the detection signal. The output unit 400 includes an output module 410, a variable gain amplifier 420, and a power amplifier 430. The output module 410 is connected to the signal processor 300 and the speaker 100, receives the adjustment signal, and outputs an output signal according to the adjustment signal. The variable gain amplifier 420 and the power amplifier 430 amplify the output signal and play the output sound signal in the form of a sound signal by the speaker 100. Thus, the microphone 41 is disposed inside the main structure of the speaker 100, thereby improving the structural integrity of the speaker. By reducing the physical distance between the microphone 41 and the loudspeaker 100 and reducing the sound propagation distance between the microphone 41 and the loudspeaker 100, the loss of sound signals is reduced when the detection unit 200 collects the working parameters of the loudspeaker 100, and the output signals of the loudspeaker 100 are timely adjusted by the signal processor 400 and the output unit 400 under the condition that the sound signals output by the loudspeaker 100 are distorted, so that the accuracy of the sound signals output by the loudspeaker 100 is improved, the performance of the loudspeaker 100 is further improved, and the loudspeaker 100 is more convenient to use.

Fig. 2 is a signal comparison diagram under the condition of loudspeaker distortion according to the embodiment of the present invention. As shown in fig. 2, taking the time domain response of the speaker when the input signal is a standard sine wave as an example for explanation, when there is distortion in the sound signal output by the speaker, there is a difference between the sound signal output by the speaker (i.e., the sound signal collected by the microphone) and the input signal, and the amplitude difference at the peak and the trough in the time domain response curve is particularly obvious. The amplitude difference value between the output signal and the input signal of the loudspeaker is acquired, when the amplitude difference value reaches a preset condition, the amplitude of the input signal of the loudspeaker is improved through the signal processor, so that the sensitivity of the output signal of the loudspeaker at the wave crest and the wave trough is improved, a time domain oscillogram which is closer to or consistent with the amplitude of the input signal is achieved, and the accuracy of the output signal of the loudspeaker is improved.

In an alternative implementation, as shown in fig. 1, in order to comprehensively detect the operating parameters of the speaker 100, the detecting unit 200 includes a voltage detecting unit 210, a current detecting unit 220, and a frequency response detecting unit 230. The voltage detection unit 210 is connected to the speaker 100 for detecting a voltage across the speaker 100. The current detection unit 220 is connected in parallel between the output unit 400 and the speaker 100 through a sampling resistor 221, and is used for detecting the magnitude of the current passing through the speaker 100. The frequency response detection unit 230 is connected to the microphone 41 for detecting the frequency response of the sound signal played by the loudspeaker 100. Therefore, the signal processor 300 collects the voltage, the passing current and the frequency response data at the two ends of the loudspeaker 100 according to the voltage detection unit 210, the current detection unit 220 and the frequency response unit 230, adjusts the output signal of the loudspeaker 100 in real time, improves the accuracy of the sound signal output by the loudspeaker 100, improves the use performance of the loudspeaker 100, and facilitates the use of the earphone.

In an alternative implementation, the signal processor 300 may be a single chip, a control chip, a digital signal processor, or other components with signal processing functions. The voltage detecting unit 210, the current detecting unit 220, and the frequency response detecting unit 230 may be sensors, detecting circuits, or chips.

Preferably, the detection circuit of the present embodiment may be electrically connected to the speaker and the microphone through a pad, a flexible wiring board, or a printed circuit board. The detection circuit may be disposed on a flexible printed circuit board or a printed circuit board, and connected to electrodes or terminals on the speaker and the microphone through leads on the flexible printed circuit board or the printed circuit board, so as to detect the operating parameters of the speaker 100.

Fig. 3-6 are schematic diagrams of the overall structure of the speaker according to the first embodiment of the present invention. As shown in fig. 3 to 6, the speaker 100 includes a vibration mechanism 1, a magnetic circuit mechanism 2, a microphone assembly 4, and a frame 3. The vibration mechanism 1 is arranged at the middle upper part of the basin frame 3. The magnetic circuit mechanism 2 is arranged at the middle lower part of the basin frame 3 and is used for providing a magnetic field for the vibration mechanism 1, so that the vibration mechanism 1 vibrates to generate sound in a power-on state. The microphone assembly 4 is disposed in the magnetic circuit mechanism 2 and is used for collecting the sound signal output by the speaker 100 when the speaker 100 is in operation. Thus, the structural integrity of the speaker 100 is improved by integrating the microphone 41 with the structure of the speaker 100 body. Meanwhile, the voltage across the speaker 100, the passing current and the frequency response of the output sound signal are detected in real time by connecting the speaker 100, the microphone 41 and the detection circuit, and the sound signal output by the speaker 100 is timely adjusted according to the detected working parameters (i.e., the voltage across the speaker 100, the passing current and the frequency response of the output sound signal), so that the accuracy of the sound signal output by the speaker 100 is improved, and the use performance of the speaker 100 is improved.

Referring to fig. 3-6, the vibration mechanism 1 includes a diaphragm 11 and a voice coil 12, the diaphragm 11 is fixedly connected to the frame 3, and the voice coil 12 is disposed inside the frame 3 and connected to the diaphragm 11. Therefore, the assembly of the vibration mechanism 1 is realized, the structure is compact, the number of components is small, and the assembly mode is simple.

The diaphragm 11 plays an important role in the sound-emitting performance of the speaker 100. The diaphragm 11 is shaped to cooperate with the voice coil 12 and other structure of the loudspeaker 100. The diaphragm 11 in this embodiment is a flat diaphragm 11. The diaphragm 11 has a rectangular profile including a dome 111 and a corrugated rim 112. The dome 111 is a rectangular structure arranged inside the diaphragm 11, the voice coil 12 is a hollow rectangular structure and is connected to the bottom of the dome 111, and the corrugated rim 112 is connected to the periphery of the dome 111. Thus, by arranging the diaphragm 11 in a regular shape, the production, manufacture and installation of the diaphragm 11 is facilitated.

In an optional implementation manner, the material of the diaphragm 11 may be paper, wood, plastic, metal, or biomass diaphragm 11. The width, number, bending direction, bending angle and bending depth of the folding ring 112 can be selected according to actual needs. Therefore, the effect of vibration of the diaphragm 11 is improved through the corrugated rim 112 with different structures, so that the sound definition of the loudspeaker 100 output under the action of signals with different frequencies is improved, and the use performance of the loudspeaker 100 is improved.

Preferably, the diaphragm 11 in this embodiment is made of a plastic diaphragm, and the plastic diaphragm is made of a polymer compound, and has high plasticity, easy processing, and low cost. By adopting the plastic diaphragm, the loudspeaker 100 can be conveniently produced and manufactured, and the production cost is low, so that the loudspeaker 100 can be conveniently produced on a large scale.

In an alternative implementation, the vibration mechanism 1 further comprises a front cover 14. The front cover 14 is located at one side of the diaphragm 11, and has a hollow rectangular shape. The outer edge of the folding ring 112 extends outward to form a connection portion 1121, the periphery of the front cover 14 is fixed on the connection portion 1121, and the folding ring 112 is exposed through the hollow structure of the front cover 14. During operation of the loudspeaker 100, the front cover 14 reflects and diffracts sound waves generated by vibration of the diaphragm 11 and structurally adjusts the frequency response of the loudspeaker 100.

As shown in fig. 5 and 6, the magnetic circuit mechanism 2 includes a magnet 22, a top plate 23 fixed to both ends of the magnet 22, and a magnetic bowl 21 for accommodating the magnet 22 and the top plate 23, the magnet 22 is a rectangular block structure, and the magnetic bowl 21 is connected in the frame 3. The top plate 23 is connected to the top of the magnet 22 and has a magnetic permeability. The magnet 22, the top plate 23, and the magnetic bowl 21 form a magnetic circuit in which the voice coil 13 is disposed. When the voice coil 13 is energized with current, the voice coil 13 is stressed in the magnetic field and vibrates up and down, thereby driving the diaphragm 11 to vibrate and transmitting sound waves.

Preferably, the cross-sectional area of the top plate 23 of the present embodiment is the same as that of the magnet, the top plate 23 has a rectangular structure, the bottom of the top plate 23 is attached to the top of the magnet 22, and the top of the top plate 23 is flush with the top of the basin stand 3. Therefore, the top sheet 23 is convenient to select and mount, the vibration amplitude of the diaphragm 11 is increased through the top sheet 23, and the service performance of the loudspeaker 100 is improved.

Fig. 7 is a schematic diagram of a magnetic bowl structure according to an embodiment of the present invention. As shown in fig. 7, the magnetic bowl 21 includes a flat plate portion 212 and a plurality of stoppers 213 connected to the side of the flat plate portion 212, the area formed between the stoppers 213 is configured as a support portion 2131, and the magnetic bowl 21 is placed in the support portion 2131 to fix the magnet in the magnetic bowl 21.

Preferably, the flat plate portion 212 is configured as a rectangular mechanism that mates with the magnet structure. The shape of the barrier 213 is configured to be an elongated shape perpendicular to the plane of the flat plate portion 212, the number of the barriers 213 is four, and four barriers 213 are respectively located on four sides of the flat plate portion 212. Thereby, the arrangement of the magnetic bowl 21 is facilitated.

As shown in fig. 5, the flat plate portion 212 is provided with a first mounting hole 211, the magnet is provided with a second mounting hole 221 at a position corresponding to the first mounting hole 211, the top plate 23 is provided with a third mounting hole 231, and the third mounting hole 231 is arranged in the same manner as the first mounting hole 211 and the second mounting hole 221. The area formed by the first mounting hole 211, the second mounting hole 221 and the third mounting hole 231 is used for fixing the microphone assembly 4, so that the microphone assembly 4 is arranged inside the magnetic circuit mechanism 2, the integration of the microphone assembly 4 and the structure of the loudspeaker 100 body is realized, and the structural integrity of the loudspeaker 100 is enhanced.

Specifically, the first mounting hole 211, the second mounting hole 22, and the third mounting hole 231 have a through hole structure, and the cross section of the through hole structure may be rectangular, square, circular, or other shapes that can accommodate the microphone assembly 4. The size of the through hole is adapted to the size of the microphone 41. Therefore, the microphone 41 is integrated into the main body structure of the speaker 100 without changing the original microphone structure, thereby enhancing the integrity of the speaker 100. Meanwhile, since the position of the microphone 41 is opposite to the center of the diaphragm 11, the distance between the microphone 41 and the diaphragm 11 is reduced, so that the microphone 41 can rapidly and accurately acquire the sound signal output by the loudspeaker 100, and the accuracy of detecting the output frequency response of the loudspeaker 100 is improved. Furthermore, the position of the microphone 41 can be adjusted in the space formed by the first mounting hole 211, the second mounting hole 221 and the third mounting hole 231 as required, which further facilitates the arrangement of the microphone 41 and the collection of the output sound signal of the speaker 100.

Fig. 8 is a schematic view of a structure of the basin stand according to the embodiment of the present invention. As shown in fig. 8, the frame 3 is a hollow rectangular structure for fixing the magnetic bowl 21. Circuit boards 5 are arranged on both sides of the frame 3. An installation groove 36 is formed at one side of the bottom of the basin stand 3 adjacent to the side where the circuit board 5 is located, and an installation part 2121 is protrudingly arranged at one side of the flat plate part 212 opposite to the installation groove 36. During the use, installation department 2121 connects in mounting groove 36, realizes fixing of magnetism bowl 21 and basin frame 3, and then realizes the equipment of speaker 100 overall structure, and the mounting means is simple, and it is more convenient to operate.

Preferably, the circuit board 5 in the present embodiment is configured as an elastic pad. The detection circuit is arranged on the flexible circuit board or the printed circuit board. When the detection circuit is used, the flexible circuit board or the printed circuit board where the detection circuit is located is electrically connected with the elastic bonding pad, a detection circuit system of the loudspeaker 100 is established, the working parameters of the loudspeaker 100 are detected in real time, the output signal of the loudspeaker 100 is timely adjusted through the detected feedback working parameter data, and the accuracy of the loudspeaker 100 for outputting the sound signal and the use performance of the loudspeaker 100 are improved.

Referring to fig. 5 and 6, the microphone assembly 4 includes a microphone 41, a support member 42, and a flexible wiring board 43, which are arranged in this order from top to bottom. The microphone 41 is fixed on top of the support member 42, and the support member 42 passes through the first mounting hole 211, the second mounting hole 221, and the third mounting hole 231 in sequence and is connected with the magnetic bowl 21, the magnet, and the top plate 23. The flexible wiring board 43 includes a first end and a second end. The first end is electrically connected to the microphone 41 through the support member 42. The second end is connected to the frequency response detecting unit 230, and the microphone 41 and the detecting circuit are connected through the frequency response detecting unit 230. When the microphone assembly 4 is installed, the microphone assembly 4 sequentially passes through the first installation hole 211, the second installation hole 221 and the third installation hole 231, two sides of the microphone 41 are attached to the magnet and the top plate 23, and two sides of the support member 42 are attached to the magnetic bowl 21 and the magnet. Thus, the microphone 41 and the speaker 100 body are integrated, and the integrity of the speaker 100 is improved.

The utility model discloses technical scheme is through fixing microphone 41 in the space that first mounting hole 211, second mounting hole 221 and third mounting hole 231 formed for microphone 41 is connected between vibration mechanism 1 and magnetic circuit mechanism 2, has realized the integration of microphone 41 with speaker 100 body mechanism, and then reduces speaker 100's whole volume, simplifies speaker 100's mounting process. Meanwhile, the loudspeaker 100 is connected with the voltage detection unit 210 and the current detection unit 220 through the circuit board 5, and the microphone 41 is connected with the frequency response detection unit 230 through the flexible circuit board 43, so that the detection circuit can detect the voltage at two ends of the loudspeaker 100, the passing current and the output frequency response in real time, and the signal processor 300 timely adjusts the working state of the loudspeaker 100 according to the detected working parameters, thereby adjusting the accuracy of the loudspeaker 100 outputting sound signals and improving the service performance of the loudspeaker 100.

Example two

The power amplifier detection system of the embodiment comprises a loudspeaker and a detection circuit. The detection circuit is the same as that in the first embodiment, and is not described herein again.

Fig. 9-12 are schematic diagrams of the overall structure of the speaker according to the second embodiment of the present invention. As shown in fig. 9 to 12, a speaker 100 according to an embodiment of the present invention includes a vibration mechanism 1, a magnetic circuit mechanism 2, a frame 3, and a microphone assembly 4. The magnetic circuit mechanism 2 is disposed on one side of the vibration mechanism 1 and is used for providing a magnetic field for the vibration mechanism 1, so that the vibration mechanism 1 vibrates in an electrified state to generate sound. The microphone assembly 4 includes a microphone 41. A microphone 41 is connected between the vibration mechanism 1 and the magnetic circuit mechanism 2 for picking up the sound generated by the vibration mechanism 1. The frame 3 is configured to fix the vibration mechanism 1 and the magnetic circuit mechanism 2. Thus, the microphone 41 is connected between the vibration mechanism 1 and the magnetic circuit mechanism 2, so that the microphone 41 and the main body structure of the speaker 100 are integrated, and the structural integrity of the speaker 100 is improved.

As shown in fig. 11, the tub 3 in the present embodiment has a tub-like structure in which a plurality of step-like fixing portions 31 are formed inward at the top edge of the tub-like structure. The vibration mechanism 1 is disposed at the middle upper portion of the frame 3 and connected to the fixing portion 31. The magnetic circuit mechanism 2 is arranged at the middle lower part of the basin frame 3 and is fixedly connected with the inside of the basin frame 3.

Referring to fig. 9 to 12, the vibration mechanism 1 of the speaker 100 of the present embodiment includes a diaphragm 11, a voice coil 12, and a voice coil bobbin 13. Wherein,

voice coil

13 and 11 bottom fixed connection of vibrating diaphragm, voice coil 12 pass through voice coil 13 skeleton and are connected with vibrating diaphragm 11, realize vibrating mechanism 1's equipment from this, compact structure, the subassembly is small in quantity, and the equipment mode is simple.

In an alternative implementation manner, the diaphragm 11 of this embodiment may be a flat diaphragm, and the diaphragm 11 is arranged in the same manner as the diaphragm 11 of the first embodiment.

In another alternative implementation, as shown in fig. 9, 11 and 12, the diaphragm 11 in this embodiment is shaped as a circular structure as a whole, and includes a dome 111 and a corrugated rim 112, the dome 111 is located at the center of the circular structure, and the bottom of the dome 111 has a circular cross section. The edge 112 is bent upward from the periphery of the bottom of the dome 111 until it is connected to the outer edge of the diaphragm 11. Thus, the design and manufacture of the diaphragm 11 are facilitated while the sound-producing performance of the speaker 100 is satisfied.

As shown in fig. 11 and 12, the voice coil 12 and the voice coil bobbin 13 are annular, and the top of the voice coil bobbin 13 is connected to the bottom of the dome 111. The voice coil 12 is disposed outside the voice coil bobbin 13 and is fixedly connected to the voice coil bobbin 13.

In an alternative implementation, the inner side of the voice coil 12 may be connected to the voice coil bobbin 13 entirely or partially. Therefore, when the voice coil 12 and the voice coil framework 13 are connected, the contact area between the voice coil 12 and the voice coil framework 13 is adjusted according to actual needs, so that the connection mode between the voice coil 12 and the voice coil framework 13 is more flexible.

It should be noted that the voice coil 12 of the present embodiment may be connected to the diaphragm 11 through the voice coil bobbin 13, or may be connected to the diaphragm 11 through the bottom of the dome 111.

Referring to fig. 11 and 12, the magnetic circuit mechanism 2 includes a magnetic bowl 21 and a magnet 22 placed on top of the magnetic bowl 21, and the magnet 22 and the magnetic bowl 21 are configured in a disk shape. The magnetic bowl 21 is placed in the frame 3 and used for accommodating and fixing the magnet 22, a gap is formed between the outer side of the magnetic bowl 21 and the inner side of the frame 3, and the width of the gap is used for accommodating the voice coil framework 13 and the voice coil 12. The bottom of the basin stand 3 is provided with a connecting hole 32, the magnetic bowl 21 is placed in the connecting hole 32, the outer side of the magnetic bowl 21 is fixedly connected with the inner wall of the connecting hole 32, and the top of the magnetic bowl 21 is flush with the top edge of the connecting hole 32. The magnetic bowl 21 is provided with a first mounting hole 211, the magnet 22 is provided with a second mounting hole 221 corresponding to the first mounting hole 211, and the microphone 41 is disposed in a space formed by the first mounting hole 211 and the second mounting hole 221. The arrangement of the first mounting hole 211 and the second mounting hole 221 is the same as that of the first embodiment, and is not described herein again. When current flows through the voice coil 12, under the action of the magnetic field, the voice coil 12 moves and drives the voice coil bobbin 13 and the diaphragm 11 to vibrate, so that the speaker 100 can sound. Meanwhile, the microphone 41 collects the sound signal output from the speaker 100 and serves as an input signal of the frequency response detection unit 230 (i.e., an output signal of the speaker 100 detected by the frequency response detection unit 230).

Referring to fig. 11 and 12, the magnetic circuit mechanism 2 further includes a top plate 23. The top plate 23 is connected to the top of the magnet 22, and has a magnetic conductive function to increase the vibration amplitude of the diaphragm 11 and improve the usability of the speaker 100. The top plate 23 is formed with a third mounting hole 231, and the third mounting hole 231 is positioned to correspond to the first mounting hole 211 and the second mounting hole 221. When being installed, the microphone assembly 4 sequentially passes through the first installation hole 211, the second installation hole 221 and the third installation hole 231, and is fixedly connected with the magnetic circuit mechanism 2. Thus, the third mounting hole 231 enlarges the mounting space of the microphone unit 4, and the microphone unit 4 can be mounted more easily.

Preferably, the cross-sectional area of the top plate 23 of this embodiment is the same as the magnet, facilitating the selection and installation of the top plate 23.

Referring to fig. 11 and 12, the microphone assembly 4 of the present embodiment includes a microphone 41, a support member 42, and a flexible wiring board 43. The microphone 41 is fixed on top of the support member 42, and the support member 42 passes through the first mounting hole 211, the second mounting hole 221, and the third mounting hole 231 in sequence and is connected with the magnetic bowl 21, the magnet, and the top plate 23. The flexible wiring board 43 includes a first end and a second end, and the first end is electrically connected to the microphone 41 through the support member 42. The second end is connected to the frequency response detecting unit 230, and the microphone 41 and the detecting circuit are connected through the frequency response detecting unit 230.

Fig. 13 is a schematic view of a bottom structure of a basin stand according to a second embodiment of the present invention. Referring to fig. 10 and 13, the bottom of the frame 3 is provided with a receiving groove 33, and the circuit board 5 is fixed in the receiving groove 33. The circuit board 5 is provided with an electrode 51, and the electrode 51 is used for connecting the loudspeaker 100 with the voltage detection unit 210 and the current detection unit 220 in the detection circuit.

In an alternative implementation, the circuit board 5 may be a pad, a flexible printed circuit board or other component with a conductive function. The holding groove 33 can be set in a way of protruding the bottom surface of the frame 3 (i.e. the groove bottom of the holding groove 33 is flush with the bottom plane of the frame 3), and can also be set in a way of directly slotting at the bottom of the frame 3 (i.e. the notch of the holding groove 33 is flush with the bottom surface of the frame 3).

Preferably, the circuit board 5 in this embodiment is configured as a pad, and the receiving groove 33 is configured to protrude from the bottom surface of the frame 3. Specifically, two clamping blocks 34 are convexly arranged at the bottom of the basin stand 3, an area between the clamping blocks 34 is formed into a receiving groove 33, the groove bottom of the receiving groove 33 is flush with the bottom plane of the basin stand 3, and the circuit board 5 is fixed in the receiving groove 33.

In an optional implementation manner, as shown in fig. 11 and 12, the embodiment of the present invention further includes a mesh 7 and a connecting member 6, the mesh 7 is connected to one side of the basin frame 3 adjacent to the circuit board 5 through the connecting member 6, and the basin frame 3 has a plurality of through holes 35 opened to one side connected to the mesh 7, the connecting member 6 has a position corresponding to the through holes 35 opened with the vent 61, and the mesh 7 covers the vent 61 and is fixedly connected to the basin frame 3.

In another alternative implementation, the mesh 7 and the connectors 6 are arranged on the same side of the frame 3 as the circuit board 5. The bottom of the basin frame 3 and the adjacent part of the accommodating groove 33 are evenly provided with a plurality of through holes 35, the mesh cloth 7 and the connecting piece 6 are of a circular ring-shaped structure with a notch, and the position of the notch shape is used for arranging the accommodating groove 33. The mesh cloth 7 covers the through hole 35 and is fixedly connected with the basin frame 3 through the connecting piece 6.

Preferably, with reference to fig. 11 and 12, the mesh cloth 7 and the connecting members 6 in the present embodiment are disposed on the same side of the frame 3 as the circuit board 5. The mesh cloth 7 adopts a braided fabric with a ventilation function, and the connecting piece 6 can adopt connecting glue or glue, so that the mesh cloth 7 is fixedly connected with the basin stand 3. When the sound-producing device is used, the air quantity entering the loudspeaker 100 is adjusted through the mesh cloth 7, and then the sound-producing performance of the loudspeaker 100 is adjusted.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A loudspeaker, characterized in that the loudspeaker comprises:

the vibration mechanism (1) comprises a voice coil (12) and a vibrating diaphragm (11);

the magnetic circuit mechanism (2) is arranged on one side of the vibration mechanism (1) and is used for providing a magnetic field for the voice coil (12) so that the voice coil (12) drives the vibrating diaphragm (11) to vibrate to generate sound when current passes through the voice coil;

the microphone assembly (4) comprises a microphone (41), and the microphone (41) is connected between the vibration mechanism (1) and the magnetic circuit mechanism (2) and is used for collecting the sound generated by the diaphragm (11); and

a tub frame (3) configured to fix the vibration mechanism (1) and the magnetic circuit mechanism (2).

2. A loudspeaker according to claim 1, wherein the magnetic circuit mechanism (2) comprises:

a magnet (22); and

a magnetic bowl (21) connected to one side of the magnet (22) for receiving and fixing the magnet (22);

the magnetic bowl (21) is provided with a first mounting hole (211), the magnet (22) is provided with a second mounting hole (221) corresponding to the first mounting hole (211), and the microphone (41) is arranged in a space formed by the first mounting hole (211) and the second mounting hole (221).

3. A loudspeaker according to claim 2, wherein the magnetic circuit mechanism (2) further comprises:

and the top plate (23) is connected to the magnet (22) on the side opposite to the magnetic bowl (21).

4. A loudspeaker according to claim 1, wherein the vibration mechanism (1) further comprises:

and the voice coil framework (13) is used for connecting the voice coil (12) and the diaphragm (11).

5. A loudspeaker according to claim 1, wherein the microphone assembly (4) further comprises:

a support (42) for fixing the microphone (41); and

a flexible wiring board (43) electrically connected to the microphone (41) through the support member (42).

6. The speaker of claim 1, further comprising:

the circuit board (5) is connected to one side of the basin frame (3); the circuit board (5) is a bonding pad, a flexible circuit board or a printed circuit board.

7. A loudspeaker according to claim 6, wherein one side of the frame (3) is provided with a receiving slot (33), the receiving slot (33) being for fixing the circuit board (5).

8. The speaker of claim 6, further comprising:

the screen cloth (7) is connected to one side, adjacent to the circuit board (5), of the basin frame (3);

wherein, a plurality of through-holes (35) have been seted up to one side of basin frame (3), screen cloth (7) cover through-hole (35) and with basin frame (3) fixed connection.

9. The speaker of claim 7, further comprising:

the screen cloth (7) and the circuit board (5) are arranged on the same side of the basin frame (3);

the shape of the mesh cloth (7) is matched with the shape of one side of the basin frame (3), and the mesh cloth is in a notch shape at the position corresponding to the accommodating groove (33);

a plurality of through holes (35) have been seted up to one side of basin frame (3), screen cloth (7) cover through hole (35) and with basin frame (3) fixed connection.

10. A loudspeaker detection system, the detection system comprising:

a loudspeaker according to any one of claims 1-9;

the detection unit (200) is connected with the loudspeaker and the microphone (41) and is used for detecting the working parameters of the loudspeaker and outputting a detection signal;

the signal processor (300) is connected with the detection unit (200), receives the detection signal and outputs an adjustment signal according to the detection signal; and

and an output unit (400) connected to the signal processor (300) and the speaker, receiving the adjustment signal and outputting the adjustment signal to the speaker.