CN214481253U

CN214481253U - Double-moving-coil micro loudspeaker

Info

Publication number: CN214481253U
Application number: CN202120559079.7U
Authority: CN
Inventors: 周桂媚
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-10-22
Anticipated expiration: 2031-03-18

Abstract

The utility model discloses a double acting circle micro loudspeaker includes two units in the double acting circle micro loudspeaker, two units are bass unit and high pitch unit respectively, and the bass unit provides the bass part, and the high pitch part of high pitch part and high pitch unit superposes, and the high pitch unit passes through frequency division circuit, and the attenuation does not need partial bass, provides the high pitch part. The high pitch unit is coaxial distribution to in the bass unit, bass unit and high pitch unit share respective magnetic circuit device each other, and the magnetic circuit of bass unit has used the two magnetic steel systems that bass unit magnet steel and high pitch unit magnet steel are constituteed. This double acting circle micro loudspeaker through the magnetic circuit device between two units of reasonable sharing, reduces the volume after two unit piles for double acting circle micro loudspeaker is more slim, and high pitch vibrating diaphragm location step and the cooperation of avoiding the assembly to interfere the step, make the equipment convenient accuracy more, and production is convenient, manufacturing cost is lower, has very strong practicality, is fit for promoting.

Description

Double-moving-coil micro loudspeaker

Technical Field

The utility model relates to a miniature speaker technical field specifically is a miniature speaker of double acting circle.

Background

Listening to music may be a part of modern life, portable music player devices such as walkmans and mobile phones promote the development of portable wired and wireless earphones used in cooperation with the player devices, also drive the industry chain of micro-speakers applied to wired and wireless earphones, and the ability of people to restore music to earphones is continuously improved. Along with the popularization and application of AIOT, the market share of Bluetooth earphones and Bluetooth noise reduction earphones rises continuously, the functions are increased and updated continuously, people demand that the Bluetooth earphones and the Bluetooth noise reduction earphones are small and exquisite and attractive in shape, have good wearing comfort and are good in music reproduction effect. Because of the requirement of industrial design, a certain type of earphone needs to reproduce bass and treble with good effect, and has a small size, under the condition of common materials and processes, the three are difficult to balance, and corresponding limitations exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a double acting circle micro loudspeaker through the magnetic circuit device between two units of reasonable sharing, reduces the volume after two unit piles for double acting circle micro loudspeaker is more slim, and high pitch vibrating diaphragm location step with avoid the cooperation that the step was interfered in the assembly, makes the equipment convenient accuracy more, and convenient production, manufacturing cost are lower, structural design is reasonable, has very strong practicality, is fit for promoting.

In order to achieve the above object, the utility model provides a following technical scheme: a double-moving-coil micro loudspeaker comprises a bass unit and a treble unit, wherein a shell is assembled outside the bass unit, bass unit air holes are formed in the bottom of the shell, a bass unit tuning net is arranged above the bass unit air holes, the inner side of the shell is provided with a bass vibrating diaphragm in a step shape, a bass unit coil is arranged in the center of the bass vibrating diaphragm, a bass unit pole piece is arranged below the bass vibrating diaphragm, a magnetic conduction plate shared by the bass unit and the treble unit is arranged below the bass unit pole piece through bass unit magnetic steel, and a bass sound hole for enabling the bass unit to radiate sound outwards is formed in the upper surface of the magnetic conduction plate;

the center of the magnetic conduction plate is provided with a positioning assembly step for providing coaxial treble units and a step avoiding assembly interference, a high-pitch unit coil and a wiring board for connecting the low-pitch unit coil with a signal source are arranged above the magnetic conduction plate, the wiring board is provided with a treble unit frequency division capacitor, the magnetic conduction plate is provided with a treble vibrating diaphragm through the positioning assembly step, the center of the treble vibrating diaphragm is provided with the high-pitch unit coil, and the end face of the high-pitch vibrating diaphragm is provided with a protective cover;

the bottom center of magnetic conduction board is equipped with high pitch unit magnet steel, and the below of high pitch unit magnet steel is equipped with high pitch unit T shape iron, and the below of high pitch unit T shape iron is equipped with high pitch unit bleeder vent, and the surface of high pitch unit bleeder vent is equipped with high pitch unit tone net.

Furthermore, the upper part of the bass unit pole piece is provided with a bass unit pole piece notch which avoids the outlet fixing glue of the bass unit coil.

Further, the high pitch unit is coaxially arranged inside the low pitch unit.

Further, the shell corresponds high pitch vibrating diaphragm and bass vibrating diaphragm with the protecting cover and is sealed protection setting, is equipped with coil lead wire breach on the shell.

Furthermore, bass unit and treble unit share respective magnetic circuit device each other, bass unit's magnetic circuit adopts the two magnetic steel systems that bass unit magnet steel and treble unit magnet steel constitute.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the bass unit who is responsible for the bass and the high pitch unit who is responsible for the high pitch between casing and protecting cover, the bass unit, be equipped with the bass unit magnet steel on the magnetic conduction board of high pitch unit sharing, high pitch unit magnet steel, polarity interconnection through two magnet steels, provide the magnetic circuit for the bass unit, the pole piece of high pitch unit is regarded as again to the magnetic conduction board simultaneously, T shape iron with the high pitch unit, provide the magnetic circuit for the high pitch unit, the coaxial assembly step of center of magnetic conduction board is the positioning assembly of high pitch vibrating diaphragm, it interferes the step and is used for placing the outlet direction of high pitch unit coil fixed glue and coil to avoid the assembly, share part magnetic circuit device between two units, be equipped with less high pitch unit in great bass unit, reduce the structural space that two units pile up, make the miniature speaker of double acting circle more slim.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional structure of the present invention;

fig. 3 is a schematic diagram of the explosion structure of fig. 1 according to the present invention.

In the figure: 1. a bass unit; 2. a high pitch unit; 3. a housing; 4. bass unit air vents; 5. a bass unit tuning net; 6. a bass vibrating diaphragm; 7. a bass unit coil; 8. a bass unit pole piece; 9. bass unit magnetic steel; 10. a magnetic conductive plate; 11. a bass sound outlet hole; 12. positioning and assembling steps; 13. avoiding assembling interference steps; 14. a high-pitch vibrating diaphragm; 15. a high pitch unit coil; 16. a wiring board; 17. a high pitch unit frequency division capacitor; 18. a protective cover; 19. a high pitch unit magnetic steel; 20. a high pitch unit T-shaped iron; 21. air holes of the high pitch unit; 22. a high pitch unit tuning net; 23. a bass unit pole piece notch; 24. a coil lead notch; 25. the high pitch unit goes out the sound hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a dual moving coil micro speaker includes a bass unit 1 and a treble unit 2, a housing 3 is assembled outside the bass unit 1, a bass unit vent 4 is arranged at the bottom of the housing 3, a bass unit tuning net 5 is arranged above the bass unit vent 4, a bass diaphragm 6 is arranged inside the housing 3 in a step shape, a bass unit coil 7 is arranged at the center of the bass diaphragm 6, a bass unit pole piece 8 is arranged below the bass diaphragm 6, a magnetic conductive plate 10 shared by the bass unit 1 and the treble unit 2 is arranged below the bass unit pole piece 8 through a bass unit magnetic steel 9, and a bass sound outlet hole 11 for outward sound radiation of the bass unit 1 is arranged above the magnetic conductive plate 10;

the center of the magnetic conduction plate 10 is provided with a positioning assembly step 12 for mounting the coaxial high pitch unit 2 and an interference avoiding assembly step 13, the magnetic conduction plate 10 is provided with a high pitch vibrating diaphragm 14 through the positioning assembly step 12, the center of the high pitch vibrating diaphragm 14 is provided with a high pitch unit coil 15, a wiring board 16 for connecting the high pitch unit coil 15 and the low pitch unit coil 7 with a signal source is arranged above the magnetic conduction plate 10, the wiring board 16 is provided with a high pitch unit frequency division capacitor 17, the end face of the high pitch vibrating diaphragm 14 is provided with a protective cover 18, and the protective cover is provided with a high pitch unit sound outlet 25;

the bottom center of magnetic conduction board 10 is equipped with treble unit magnet steel 19, and treble unit magnet steel 19's below is equipped with treble unit T shape iron 20, and treble unit T shape iron 20's below is equipped with treble unit bleeder vent 21, and treble unit bleeder vent 21's surface is equipped with treble unit tonal modification net 22.

Specifically, the upper portion of bass unit pole piece 8 is provided with a bass unit pole piece notch 23 which avoids the bass unit coil outgoing line fixing glue.

Specifically, the treble unit 2 is coaxially disposed inside the bass unit 1.

Specifically, the housing 3 and the protecting cover 18 are sealed and protected by corresponding to the high-pitch diaphragm 14 and the low-pitch diaphragm 6, and the housing 3 is provided with a coil lead notch 24.

Specifically, bass unit 1 and treble unit 2 share respective magnetic circuit devices, and the magnetic circuit of bass unit 1 adopts a double-magnetic-steel system composed of bass unit magnetic steel 9 and treble unit magnetic steel 19.

In summary, the following steps: the high pitch unit 2 and the low pitch unit 1 share respective magnetic loop devices mutually, the low pitch unit magnetic loop applies a double magnetic steel system, and consists of a low pitch unit pole piece 8, a low pitch unit magnetic steel 9, a high pitch unit T-shaped iron 20 and a magnetic conductive plate 10, the high pitch unit magnetic loop consists of the magnetic conductive plate 10, a high pitch unit magnetic steel 19 and a high pitch unit T-shaped iron 20, the center of the magnetic conductive plate 10 is provided with a positioning assembly step 12 for providing a coaxial high pitch unit and an assembly interference avoiding step 13 for placing a high pitch unit coil fixing rubber block and the coil outgoing direction, and the upper surface of the magnetic conductive plate 10 is provided with a low pitch sound outlet hole 11 for sound radiation of the low pitch unit 1 outwards;

the sound output of the bass unit 1 is converged by a bass unit air hole 4 of a magnetic conduction plate 10 to a treble unit 2 to radiate sound outwards through a treble unit air hole 21 of a protective cover 18, the sound output of a diaphragm of the bass unit 1 is opposite to the positive motion, so that the bass unit coil and the signal wiring terminal polarity need to be connected in a reverse mode, or the bass unit magnetic steel 9 polarity needs to be played in a reverse mode, so that the bass unit coil cuts a magnetic force line in a magnetic loop to move and signal the bass diaphragm 6, the bass unit 1 magnetic loop is a double-magnetic steel structure using a bass unit magnetic steel 9 and a treble unit magnetic steel 19, and the magnetic poles of the bass unit magnetic steel 9 and the treble unit magnetic steel 19 need to be placed in a reverse mode;

treble coil carries out positive and negative with the wiring end and is connected, need synthesize bass unit magnet steel 9 and treble unit magnet steel 19's magnetic pole and place the direction, and treble unit 2's frequency division electric capacity's reverse phase effect, make treble unit coil cut the magnetic line of force in the magnetic circuit, produce the effect and carry out outside sound radiation to treble vibrating diaphragm 14, treble unit bleeder vent 21 through setting up protecting cover 18 on treble unit 2.

Claims

1. A double moving coil micro loudspeaker, comprising a bass unit (1) and a treble unit (2), characterized in that: the external assembly of bass unit (1) is provided with a shell (3), the bottom of shell (3) is provided with bass unit air vents (4), bass unit tuning nets (5) are arranged above the bass unit air vents (4), the inner side of shell (3) is provided with a bass vibration diaphragm (6) in a step shape, the center of the bass vibration diaphragm (6) is provided with a bass unit coil (7), a bass unit pole piece (8) is arranged below the bass vibration diaphragm (6), a magnetic conduction plate (10) shared by bass unit (1) and treble unit (2) is arranged below the bass unit pole piece (8) through bass unit magnetic steel (9), and a bass sound outlet hole (11) for carrying out sound radiation outwards by bass unit (1) is arranged above the magnetic conduction plate (10);

the center of the magnetic conduction plate (10) is provided with a positioning assembly step (12) for mounting the coaxial high-pitch unit (2) and an interference step (13) avoiding assembly, a high-pitch vibration diaphragm (14) is arranged on the magnetic conduction plate (10) through the positioning assembly step (12), a high-pitch unit coil (15) is arranged in the center of the high-pitch vibration diaphragm (14), a wiring board (16) for connecting the high-pitch unit coil (15) and the low-pitch unit coil (7) with a signal source is arranged above the magnetic conduction plate (10), a high-pitch unit frequency division capacitor (17) is arranged on the wiring board (16), and a protective cover (18) is arranged on the end face of the high-pitch vibration diaphragm (14);

the bottom center of magnetic conduction board (10) is equipped with treble unit magnet steel (19), and the below of treble unit magnet steel (19) is equipped with treble unit T shape iron (20), and the below of treble unit T shape iron (20) is equipped with treble unit bleeder vent (21), and the surface of treble unit bleeder vent (21) is equipped with treble unit tonal modification net (22).

2. A dual coil micro-speaker as claimed in claim 1, wherein: the upper portion of bass unit pole piece (8) is equipped with bass unit pole piece breach (23) of keeping away bass unit coil fixed glue of being qualified for the next round of competitions.

3. A dual coil micro-speaker as claimed in claim 1, wherein: the high pitch unit (2) is coaxially arranged inside the low pitch unit (1).

4. A dual coil micro-speaker as claimed in claim 1, wherein: casing (3) and protecting cover (18) correspond high pitch vibrating diaphragm (14) and low pitch vibrating diaphragm (6) and are sealed protection setting, are equipped with coil lead wire breach (24) on casing (3).

5. A dual coil micro-speaker as claimed in claim 1, wherein: bass unit (1) and treble unit (2) share respective magnetic circuit device each other, the magnetic circuit of bass unit (1) adopts the two magnetic steel systems that bass unit magnet steel (9) and treble unit magnet steel (19) are constituteed.