CN215818594U

CN215818594U - Double voice coil moving coil unit

Info

Publication number: CN215818594U
Application number: CN202121779613.1U
Authority: CN
Inventors: 何越
Original assignee: Shenzhen Yuanze Electronics Co ltd
Current assignee: Shenzhen Yuanze Electronics Co ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-11
Anticipated expiration: 2031-07-30

Abstract

The utility model belongs to the technical field of moving coil units, and particularly relates to a double-voice-coil moving coil unit which comprises a shell, a vibrating diaphragm, a first voice coil, a second voice coil, an inner magnet, a first annular magnet, a second annular magnet and a frequency divider, wherein the vibrating diaphragm is arranged on the shell; the first annular magnet is arranged around the inner magnet, a first magnetic gap is formed between the inner ring of the first annular magnet and the outer ring of the inner magnet, the second annular magnet is arranged around the first annular magnet, and a second magnetic gap is formed between the inner ring of the second annular magnet and the outer ring of the first annular magnet; first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil drive the vibrating diaphragm vibration and make sound, strengthen the sound effect of each frequency, improve tone quality, effectively improve the magnetic field utilization ratio, improve the integrated level, can make the magnetic circuit accomplish thinner under the performance that improves the moving coil unit, help the moving coil unit to frivolous development, satisfy the frivolous requirement of product.

Description

Double voice coil moving coil unit

Technical Field

The utility model belongs to the technical field of moving coil units, and particularly relates to a double-voice-coil moving coil unit.

Background

The earphone is a pair of conversion units which receive the electric signals sent by the media player or receiver and convert the electric signals into audible sound waves by using a loudspeaker close to the ear. The earphone is generally separable from the media player, and has the advantages that the earphone can listen to the sound independently without influencing other people; can also isolate the sound of the surrounding environment, and is very helpful for people who use in a noisy environment such as a recording studio, a bar, a trip, sports, and the like. The earphone is originally used for telephone and radio, but with the prevalence of portable electronic devices, the earphone is often used for mobile phones, walkmans, radios, portable electronic games, digital audio players, and the like. Present consumer requires more and more high to the tone quality of earphone, the speaker in the earphone on the market can not satisfy consumer's requirement gradually, in order to improve tone quality, multi-frequency loudspeaker has been released on the market at present, divide in the narrow and small space of earphone and arrange each frequency channel loudspeaker, though make the sound phase dislocation obviously show, nevertheless can't realize sound phase accurate positioning and high-fidelity reduction, how the order of each frequency channel loudspeaker is very obvious to the directional influence of sound, and a plurality of loudspeaker are difficult to integrate to the finite space of earphone with the gross thickness as thin as possible, lead to the earphone size to be bigger than normal, therefore, in order to improve consumer's use experience, this application provides the better dual voice coil moving coil unit of tone quality effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a double-voice-coil moving coil unit, and aims to solve the technical problems that a multi-frequency earphone in the prior art is large in size and poor in tone quality effect.

In order to achieve the above object, an embodiment of the present invention provides a dual voice coil moving coil unit, which includes a housing, a diaphragm, a first voice coil, a second voice coil, an inner magnet, a first annular magnet, a second annular magnet, and a frequency divider; the inner magnet is connected to the shell, the first annular magnet is arranged around the inner magnet, a first magnetic gap is formed between the inner ring of the first annular magnet and the outer ring of the inner magnet, the second annular magnet is arranged around the first annular magnet, and a second magnetic gap is formed between the inner ring of the second annular magnet and the outer ring of the first annular magnet; the vibrating diaphragm connect in on the casing, the one end of first voice coil loudspeaker voice coil connect in on the vibrating diaphragm, the other end of first voice coil loudspeaker voice coil stretches into in the first magnetic gap, the one end of second voice coil loudspeaker voice coil connect in on the vibrating diaphragm, the other end of second voice coil loudspeaker voice coil stretches into in the second magnetic gap, first voice coil loudspeaker voice coil with the second voice coil loudspeaker voice coil all with the frequency divider electricity is connected.

Optionally, the dual voice coil moving coil unit further includes a circuit board, the circuit board and the frequency divider are electrically connected to input an audio signal into the frequency divider, and the frequency divider converts the input audio signal into signals of different frequencies, and sends the signals to the first voice coil and the second voice coil, respectively.

Optionally, the circuit board is fixedly connected to the outer bottom surface of the housing.

Optionally, washers are disposed on the inner magnet, the first annular magnet and the second annular magnet.

Optionally, a first vent hole is formed in the washer, and second vent holes matched with the first vent hole are formed in the inner magnet, the first annular magnet and the second annular magnet.

Optionally, the outer edge of the vibrating diaphragm is connected with a fixing ring, the fixing ring is connected with the shell, the top of the washer is arranged on a positioning convex edge matched with the fixing ring, and the positioning convex edge is abutted to the inner ring of the fixing ring.

Optionally, the inner magnet, the first annular magnet and the second annular magnet are coaxially arranged.

Optionally, the casing includes a copper sleeve and a face cover, a containing cavity is arranged in the copper sleeve, a sound outlet is arranged at the upper end of the copper sleeve, an opening is arranged at the lower end of the copper sleeve, the face cover is connected to the lower end of the copper sleeve and covers the opening, a T-iron is connected to the inner side of the face cover, and a positioning convex edge used for fixing the inner magnet, the first annular magnet and the second annular magnet is arranged on the T-iron.

Optionally, the diaphragm has an inner ring and an outer ring, the inner ring of the diaphragm is connected to one end of the first voice coil, and the outer ring of the diaphragm is connected to one end of the second voice coil.

Optionally, an annular vibration portion is arranged between the inner ring of the diaphragm and the outer ring of the diaphragm, the annular vibration portion arches in a direction away from the inner magnet, and a plurality of strip-shaped grooves are formed in the annular vibration portion.

One or more technical solutions in the dual voice coil moving coil unit provided by the embodiment of the present invention at least have one of the following technical effects: set up first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil set up respectively in the magnetic field of difference, the frequency divider carries first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil respectively with different audio signal, first voice coil loudspeaker voice coil and second voice coil loudspeaker voice coil drive vibrating diaphragm vibration sound, the sound effect of each frequency of reinforcing, improve tone quality, effectively improve the magnetic field utilization ratio, improve the integration level, can make the magnetic circuit accomplish thinner under the performance that improves the movable coil unit, help the movable coil unit to frivolousization development, satisfy the frivolousization requirement of product.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a dual voice coil moving coil unit according to an embodiment of the present invention.

Fig. 2 is an exploded view of a dual voice coil moving coil unit according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a diaphragm according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10-shell 11-copper sleeve 12-surface cover

13-T iron 20-diaphragm 21-annular vibration part

22-strip groove 30-first voice coil 40-second voice coil

50-inner magnet 60-first ring magnet 70-second ring magnet

80-washer 90-fixing ring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-3 are exemplary and intended to be used to illustrate embodiments of the utility model, and should not be construed as limiting the utility model.

In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. Specific meanings of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific situations.

In an embodiment of the present invention, as shown in fig. 1 to 3, a dual voice coil moving coil unit is provided, which includes a housing 10, a diaphragm 20, a first voice coil 30, a second voice coil 40, an inner magnet 50, a first ring magnet 60, a second ring magnet 70, and a frequency divider; the inner magnet 50 is connected to the housing 10, the first annular magnet 60 is arranged around the inner magnet 50, a first magnetic gap is arranged between an inner ring of the first annular magnet 60 and an outer ring of the inner magnet 50, the second annular magnet 70 is arranged around the first annular magnet 60, and a second magnetic gap is arranged between an inner ring of the second annular magnet 70 and an outer ring of the first annular magnet 60; the vibrating diaphragm 20 is connected to the casing 10, one end of the first voice coil 30 is connected to the vibrating diaphragm 20, the other end of the first voice coil 30 extends into the first magnetic gap, one end of the second voice coil 40 is connected to the vibrating diaphragm 20, the other end of the second voice coil 40 extends into the second magnetic gap, and the first voice coil 30 and the second voice coil 40 are both electrically connected to the frequency divider.

In the embodiment of the present invention, the first voice coil 30 and the second voice coil 40 are disposed in different magnetic fields, the frequency divider transmits different audio signals to the first voice coil 30 and the second voice coil 40, the first voice coil 30 and the second voice coil 40 drive the diaphragm 20 to vibrate to generate sound, so as to enhance the sound effect of each frequency, improve the sound quality, effectively improve the magnetic field utilization rate, improve the integration level, and make the magnetic circuit thinner while improving the performance of the moving coil unit, thereby facilitating the development of the moving coil unit to be thinner and lighter, and meeting the requirement of product to be thinner and lighter.

In another embodiment of the present invention, the dual voice coil moving coil unit of the dual voice coil moving coil unit further includes a circuit board, the circuit board and the frequency divider are electrically connected for inputting an audio signal into the frequency divider, the frequency divider converts the input audio signal into signals of different frequencies, and the signals are respectively transmitted to the first voice coil 30 and the second voice coil 40; the sounding method of the double-voice-coil moving coil unit comprises the following steps: s100: switching on the power supply, and starting the circuit board and the frequency divider to work; s200: the frequency divider delivers audio signals to the first voice coil 30 and the second voice coil 40, respectively, which are in different magnetic fields; s300: when an audio signal flows through the first voice coil 30, the first voice coil 30 drives the diaphragm 20 to work under the action of a magnetic field force, and when an electrical signal flows through the second voice coil 40, the second voice coil 40 drives the diaphragm 20 to work under the action of a magnetic field force.

Specifically, the audio signal includes a high frequency signal and a middle and low frequency signal, the frequency division module transmits the high frequency signal to the first voice coil 30, and the frequency division module transmits the middle and low frequency signal to the second voice coil 40.

Specifically, the frequency dividing module transmits a first audio signal with more high frequencies, less middle frequencies, and a second audio signal with more high frequencies, less middle frequencies, and less middle frequencies, to the first voice coil 30, and the second audio signal to the second voice coil 40.

In another embodiment of the present invention, the circuit board of the dual voice coil moving coil unit is fixedly connected to the outer bottom surface of the casing 10, specifically, the casing 10 is provided with a through hole, and a lead extends into the casing 10 through the through hole to electrically connect the circuit board and the frequency divider, so that the circuit board and the frequency divider are electrically connected.

In another embodiment of the present invention, washers 80 are disposed on the inner magnet 50, the first ring magnet 60 and the second ring magnet 70 of the dual voice coil moving coil unit, so that a uniform magnetic field is generated in the first magnetic gap and the second magnetic gap, thereby improving sensitivity, reducing distortion and improving sound quality.

In another embodiment of the present invention, a first ventilation hole is provided on the washer 80 of the dual voice coil moving coil unit, and second ventilation holes matched with the first ventilation hole are provided on the inner magnet 50, the first annular magnet 60 and the second annular magnet 70; the first vent hole and the second vent hole are communicated to form a vent channel, so that the air pressure in the shell 10 is consistent with the external air pressure, the problem of sound distortion caused by compression of the space inside the shell 10 is solved, and the tone quality effect of the double-voice-coil moving coil unit is improved.

In another embodiment of the present invention, a fixing ring 90 is connected to an outer edge of the diaphragm 20 of the dual voice coil moving coil unit, the fixing ring 90 is connected to the housing 10, a positioning protruding edge adapted to the fixing ring 90 is disposed at a top of the washer 80, the positioning protruding edge abuts against an inner ring of the fixing ring 90, and the positioning protruding edge is disposed to facilitate positioning of the fixing ring 90, so as to improve assembly efficiency and improve stability of the fixing ring 90.

In another embodiment of the present invention, the inner magnet 50, the first ring magnet 60, and the second ring magnet 70 of the dual voice coil moving coil unit are coaxially disposed, so that gaps at various places between the first ring magnet 60 and the inner magnet 50 are kept uniform, and gaps at various places between the second ring magnet and the first ring magnet 60 are kept uniform, thereby reducing distortion effect of the dual voice coil moving coil unit and improving sound quality.

In another embodiment of the present invention, the casing 10 of the dual voice coil moving coil unit includes a copper sleeve 11 and a surface cover 12, wherein a receiving cavity is formed in the copper sleeve 11, a sound outlet hole is formed in an upper end of the copper sleeve 11, an opening is formed in a lower end of the copper sleeve 11, the surface cover 12 is connected to a lower end of the copper sleeve 11 and covers the opening, a T-shaped iron 13 is connected to an inner side of the surface cover 12, and a mounting ledge for fixing the inner magnet 50, the first annular magnet 60 and the second annular magnet 70 is formed on the T-shaped iron 13.

In another embodiment of the present invention, the diaphragm 20 of the dual voice coil moving coil unit has an inner ring and an outer ring, the inner ring of the diaphragm 20 is connected to one end of the first voice coil 30, and the outer ring of the diaphragm 20 is connected to one end of the second voice coil 40; the interval sets up in first voice coil loudspeaker voice coil 30 and the second voice coil loudspeaker voice coil 40 for the first voice coil loudspeaker voice coil 30 that produces the medium-low frequency drives vibrating diaphragm 20 vibration through the inner circle of vibrating diaphragm 20, and the second voice coil loudspeaker voice coil 40 that is used for producing the high-frequency drives vibrating diaphragm 20 vibration through the outer lane of vibrating diaphragm 20, separates the vibration of different frequencies, improves tone quality effect.

In another embodiment of the present invention, an annular vibration portion 21 is disposed between an inner ring of the diaphragm 20 and an outer ring of the diaphragm 20 of the dual voice coil moving coil unit, the annular vibration portion 21 is arched in a direction away from the inner magnet 50, a plurality of strip-shaped grooves 22 are disposed on the annular vibration portion 21, and the strip-shaped grooves 22 are circumferentially distributed along an axis of the annular vibration portion 21, so as to increase toughness of the annular vibration portion 21, improve a vibration effect of the annular vibration portion 21, and improve sound quality.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A kind of double voice coil moving coil unit, characterized by: the voice coil loudspeaker comprises a shell, a vibrating diaphragm, a first voice coil, a second voice coil, an inner magnet, a first annular magnet, a second annular magnet and a frequency divider; the inner magnet is connected to the shell, the first annular magnet is arranged around the inner magnet, a first magnetic gap is formed between the inner ring of the first annular magnet and the outer ring of the inner magnet, the second annular magnet is arranged around the first annular magnet, and a second magnetic gap is formed between the inner ring of the second annular magnet and the outer ring of the first annular magnet; the vibrating diaphragm connect in on the casing, the one end of first voice coil loudspeaker voice coil connect in on the vibrating diaphragm, the other end of first voice coil loudspeaker voice coil stretches into in the first magnetic gap, the one end of second voice coil loudspeaker voice coil connect in on the vibrating diaphragm, the other end of second voice coil loudspeaker voice coil stretches into in the second magnetic gap, first voice coil loudspeaker voice coil with the second voice coil loudspeaker voice coil all with the frequency divider electricity is connected.

2. The dual voice coil moving coil unit of claim 1, wherein: the double-voice-coil moving coil unit further comprises a circuit board, the circuit board is electrically connected with the frequency divider and used for inputting audio signals into the frequency divider, and the frequency divider converts the input audio signals into signals with different frequencies and respectively sends the signals to the first voice coil and the second voice coil.

3. The dual voice coil moving coil unit of claim 2, wherein: the circuit board is fixedly connected to the outer bottom surface of the shell.

4. The dual voice coil moving coil unit of claim 1, wherein: and washers are arranged on the inner magnet, the first annular magnet and the second annular magnet.

5. The dual voice coil moving coil unit of claim 4, wherein: the washer is provided with a first vent hole, and the inner magnet, the first annular magnet and the second annular magnet are respectively provided with a second vent hole matched with the first vent hole.

6. The dual voice coil moving coil unit of claim 4, wherein: the outward flange of vibrating diaphragm is connected with solid fixed ring, gu fixed ring with the casing is connected, the top of china department locate with gu the protruding edge of the location of fixed ring looks adaptation, the protruding edge of location with gu the inner circle butt of fixed ring.

7. The dual voice coil moving coil unit of claim 1, wherein: the inner magnet, the first annular magnet and the second annular magnet are coaxially arranged.

8. The dual voice coil moving coil unit of claim 1, wherein: the shell comprises a copper sleeve and a face cover, a containing cavity is arranged in the copper sleeve, a sound outlet hole is formed in the upper end of the copper sleeve, an opening is formed in the lower end of the copper sleeve, the face cover is connected to the lower end of the copper sleeve and covers the opening, the inner side of the face cover is connected with a T iron, and a positioning convex edge used for fixing the inner magnet, the first annular magnet and the second annular magnet is arranged on the T iron.

9. The dual voice coil moving coil unit according to any one of claims 1 to 8, wherein: the vibrating diaphragm is provided with an inner ring and an outer ring, the inner ring of the vibrating diaphragm is connected with one end of the first voice coil, and the outer ring of the vibrating diaphragm is connected with one end of the second voice coil.

10. The dual voice coil moving coil unit of claim 9, wherein: an annular vibration part is arranged between the inner ring of the vibrating diaphragm and the outer ring of the vibrating diaphragm, the annular vibration part arches towards the direction far away from the inner magnet, and a plurality of strip-shaped grooves are formed in the annular vibration part.