CN114095840A - Double voice coil moving coil unit - Google Patents

Abstract

The invention belongs to the technical field of moving coil units, and particularly relates to a double-voice-coil moving coil unit which comprises a shell, an outer ring vibrating diaphragm, an inner ring 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 outer ring vibrating diaphragm is arranged on the shell; the outer ring vibrating diaphragm is connected to the shell, the inner ring vibrating diaphragm is arranged in the middle of the outer ring vibrating diaphragm, an S-shaped elastic sheet is arranged between the inner ring vibrating diaphragm and the outer ring vibrating diaphragm, one end of a first voice coil is connected to the inner ring vibrating diaphragm, the other end of the first voice coil extends into the first magnetic gap, one end of a second voice coil is connected to the outer ring vibrating diaphragm, the other end of the second voice coil extends into the second magnetic gap, and the first voice coil and the second voice coil are both electrically connected with the frequency divider; the outer ring vibrating diaphragm and the inner ring vibrating diaphragm are separated and arranged so as to reduce mutual interference between the outer ring vibrating diaphragm and the inner ring vibrating diaphragm in the vibrating process, the S-shaped elastic sheet is arranged between the outer ring vibrating diaphragm and the inner ring vibrating diaphragm, and the supporting function is realized while the vibration is filtered.

Description

Double voice coil moving coil unit

Technical Field

The invention 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.

Disclosure of Invention

The invention 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, an outer ring diaphragm, an inner ring 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 outer lane vibrating diaphragm connect in on the casing, the inner circle vibrating diaphragm is located the middle part of outer lane vibrating diaphragm, the inner circle vibrating diaphragm with be equipped with the S-shaped shell fragment between the outer lane vibrating diaphragm, the one end of first voice coil loudspeaker voice coil connect in on the inner circle 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 outer lane 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 outward flange of outer lane vibrating diaphragm is connected with solid fixed ring, gu fixed ring with the casing is connected, the top of magnificent department locate with gu the protruding edge of location of fixed ring looks adaptation, the protruding edge of location with gu the inner circle butt of fixed ring.

Optionally, the inner magnet, the first annular magnet and the second annular magnet are coaxially arranged; the outer ring vibrating diaphragm and the inner ring vibrating diaphragm 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 number of the S-shaped elastic pieces is multiple, and each S-shaped elastic piece is uniformly distributed around the inner ring diaphragm in a circumferential manner.

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

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: the frequency divider respectively transmits different audio signals to the first voice coil and the second voice coil, the first voice coil and the second voice coil respectively drive the inner ring vibrating diaphragm and the outer ring vibrating diaphragm to vibrate and make sound, the sound effect of each frequency is enhanced, the tone quality is improved, the utilization rate of the magnetic field is effectively improved, the integration level is improved, the magnetic circuit can be thinner while the performance of the moving coil unit is improved, the moving coil unit is favorably developed to be thinner, and the requirement of the product on the product thinning is met; first voice coil loudspeaker voice coil vibration drives inner circle vibrating diaphragm vibration sound production, and second voice coil loudspeaker voice coil vibration drives outer lane vibrating diaphragm vibration sound production, separates outer lane vibrating diaphragm and inner circle vibrating diaphragm and sets up to outer lane vibrating diaphragm and inner circle vibrating diaphragm are disturbed each other in the reduction vibration process, set up S-shaped shell fragment between outer lane vibrating diaphragm and inner circle vibrating diaphragm, realize the support function when filtering the vibration.

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-outer ring vibrating diaphragm 21-inner ring vibrating diaphragm

22-S-shaped spring plate 30-first voice coil 40-second voice coil

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

80-washer.

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 invention, and should not be construed as limiting the invention.

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, an outer ring diaphragm 20, an inner ring diaphragm 21, a first voice coil 30, a second voice coil 40, an inner magnet 50, a first annular magnet 60, a second annular magnet 70, and a frequency divider; the inner magnet 50 is connected to the housing 10, the first annular magnet 60 is disposed around the inner magnet 50, a first magnetic gap is provided 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 disposed around the first annular magnet 60, and a second magnetic gap is provided between an inner ring of the second annular magnet 70 and an outer ring of the first annular magnet 60; outer lane vibrating diaphragm 20 connects on casing 10, the middle part of outer lane vibrating diaphragm 20 is located to inner circle vibrating diaphragm 21, be equipped with S-shaped shell fragment 22 between inner circle vibrating diaphragm 21 and the outer lane vibrating diaphragm 20, the one end of first voice coil loudspeaker voice coil 30 is connected on inner circle vibrating diaphragm 21, the other end of first voice coil loudspeaker voice coil 30 stretches into in the first magnetic gap, the one end of second voice coil loudspeaker voice coil 40 is connected on outer lane vibrating diaphragm 20, the other end of second voice coil loudspeaker voice coil 40 stretches into in the second magnetic gap, first voice coil loudspeaker voice coil 30 and second voice coil loudspeaker voice coil 40 all are connected with the frequency divider electricity.

In the embodiment of the present invention, the first voice coil 30 and the second voice coil 40 are arranged, the first voice coil 30 and the second voice coil 40 are respectively arranged in different magnetic fields, the frequency divider respectively 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 respectively drive the inner ring diaphragm 21 and the outer ring diaphragm 20 to vibrate and make a sound, so as to enhance the sound effect of each frequency, improve the sound quality, effectively improve the utilization rate of the magnetic field, 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 meeting the requirement of the product to be thinner and thinner; first voice coil loudspeaker voice coil 30 vibrates and drives inner circle vibrating diaphragm 21 vibration sound production, and the vibration of second voice coil loudspeaker voice coil 40 drives outer lane vibrating diaphragm 20 vibration sound production, separates outer lane vibrating diaphragm 20 and inner circle vibrating diaphragm 21 and sets up to reduce vibration in-process outer lane vibrating diaphragm 20 and inner circle vibrating diaphragm 21 and disturb each other, set up S-shaped shell fragment 22 between outer lane vibrating diaphragm 20 and inner circle vibrating diaphragm 21, realize support function when filtering the vibration.

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 the audio signal into the frequency divider, the frequency divider converts the input audio signal into signals of different frequencies and sends the signals to the first voice coil 30 and the second voice coil 40, respectively; 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; s0: the frequency divider delivers the audio signal 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 inner ring diaphragm 21 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 outer ring diaphragm 20 to work under the action of the magnetic field force.

Specifically, the audio signal includes a high frequency signal and a mid-low frequency signal, the crossover module feeds the high frequency signal into the first voice coil 30, and the crossover module feeds the mid-low frequency signal into 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.

Specifically, the S-shaped spring 22 is provided with a wire connected to a main power supply, and the wire is electrically connected to the first voice coil 30.

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, and specifically, the casing 10 is provided with a wire port, and a wire extends into the casing 10 through the wire port 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, the inner magnet 50, the first ring magnet 60 and the second ring magnet 70 of the dual voice coil moving coil unit are all provided with washers 80, 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, the washer 80 of the dual voice coil moving coil unit is provided with a first ventilation hole, and the inner magnet 50, the first annular magnet 60 and the second annular magnet 70 are provided with a second ventilation hole matched with the first ventilation hole; 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, the outer edge of the outer ring diaphragm 20 of the dual voice coil moving coil unit is connected to a fixing ring, the fixing ring is connected to the housing 10, the top of the washer 80 is disposed on a positioning convex edge adapted to the fixing ring, the positioning convex edge abuts against the inner ring of the fixing ring, and the positioning convex edge is disposed to facilitate positioning of the fixing ring, so as to improve the assembly efficiency and improve the stability of the fixing ring.

In another embodiment of the present invention, the inner magnet 50, the first annular magnet 60 and the second annular magnet 70 of the dual voice coil moving coil unit are coaxially arranged, so that gaps at various places between the first annular magnet 60 and the inner magnet 50 are kept consistent, and gaps at various places between the second annular magnet and the first annular magnet 60 are kept consistent, thereby reducing distortion effect of the dual voice coil moving coil unit and improving sound quality; the outer ring vibrating diaphragm 20 and the inner ring vibrating diaphragm 21 are coaxially arranged, so that accurate sound phase positioning and high-fidelity restoration are realized.

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 the copper sleeve 11 has a receiving cavity therein, the upper end of the copper sleeve 11 has a sound outlet, the lower end of the copper sleeve 11 has an opening, the surface cover 12 is connected to the lower end of the copper sleeve 11 and covers the opening, the inner side of the surface cover 12 is connected with a T-iron 13, and the T-iron 13 has a mounting flange for fixing the inner magnet 50, the first ring magnet 60 and the second ring magnet 70.

In another embodiment of the present invention, a plurality of S-shaped spring pieces 22 of the dual voice coil moving coil unit are provided, and each S-shaped spring piece 22 is uniformly and circumferentially distributed around the inner ring vibrating diaphragm 21, so as to improve the stability of the inner ring vibrating diaphragm 21; when the inner ring vibrating diaphragm 21 vibrates, the S-shaped elastic sheet 22 filters the vibration of the inner ring vibrating diaphragm 21, the interference to the outer ring vibrating diaphragm 20 is reduced, when the outer ring vibrating diaphragm 20 vibrates, the S-shaped elastic sheet 22 filters the vibration of the outer ring vibrating diaphragm 20, the interference to the inner ring vibrating diaphragm 21 is reduced, the vibration with different frequencies is separated, and the tone quality effect is improved.

In another embodiment of the present invention, the outer ring diaphragm 20 of the dual voice coil moving coil unit is provided with an annular vibrating portion, the annular vibrating portion arches in a direction away from the inner magnet 50, the annular vibrating portion is provided with a plurality of strip-shaped grooves, and each strip-shaped groove is circumferentially distributed along an axis of the annular vibrating portion, so as to increase toughness of the annular vibrating portion, improve a vibration effect of the annular vibrating portion, 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 invention, 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 (10)

1. A kind of double voice coil moving coil unit, characterized by: the voice coil loudspeaker comprises a shell, an outer ring vibrating diaphragm, an inner ring 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 outer lane vibrating diaphragm connect in on the casing, the inner circle vibrating diaphragm is located the middle part of outer lane vibrating diaphragm, the inner circle vibrating diaphragm with be equipped with the S-shaped shell fragment between the outer lane vibrating diaphragm, the one end of first voice coil loudspeaker voice coil connect in on the inner circle 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 outer lane 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 outer lane 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 in location of fixed ring looks adaptation, the protruding edge in location with gu fixed ring's inner circle butt.

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; the outer ring vibrating diaphragm and the inner ring vibrating diaphragm 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 S-shaped elastic pieces are arranged in a plurality, and are uniformly distributed circumferentially around the inner ring vibrating diaphragm.

10. The dual voice coil moving coil unit of claim 9, wherein: the outer lane vibrating diaphragm is equipped with annular vibration portion, annular vibration portion toward keeping away from the direction hunch-up of interior magnet, be equipped with a plurality of bar grooves on the annular vibration portion.

Images