CN218570455U

CN218570455U - Double-unit loudspeaker

Info

Publication number: CN218570455U
Application number: CN202222303128.8U
Authority: CN
Inventors: 温增丰; 薛辉; 陈艳芳
Original assignee: Transound Electronics Co Ltd
Current assignee: Transound Electronics Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-03-03
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a double-unit loudspeaker, which comprises a shell, a diaphragm group, a FPC (flexible printed circuit) board, a voice coil, a washer, a magnet, a U-shaped cup, a first backing ring, a diaphragm and a second backing ring; the shell is provided with a front side opening, the first backing ring and the second backing ring are sequentially arranged in the shell from front to back, the first backing ring is abutted against the inner bottom of the shell, and the vibrating reed is arranged between the first backing ring and the second backing ring; the U cup is arranged in the second gasket ring and is abutted against the front side of the vibrating piece; the magnet is arranged in the U-shaped cup, and the washer is stacked on the front side of the magnet; the vibrating diaphragm group is arranged in the shell and is abutted against the front side of the second backing ring; the voice coil is arranged on the diaphragm group and extends to a position between the magnet and the U cup, and the FPC circuit board is positioned between the diaphragm group and the voice coil; borrow this, it has bone conduction and air conduction function concurrently, has compensatied the not enough problem of bass that bone conduction appears at the transmission sound in-process, has increased the power of speaker, reduces full frequency distortion, and tone quality is better.

Description

Double-unit loudspeaker

Technical Field

The utility model belongs to the technical field of the generating device technique and specifically relates to indicate a twin unit speaker.

Background

A speaker is a transducer for converting an electrical signal into a sound signal, and commonly used sound conduction methods include air conduction and bone conduction. Air conduction is to generate sound through vibration of a vibrating diaphragm and then to transmit the sound to the ears of a user in an air transmission mode, and bone conduction is to transmit sound waves by utilizing the skull, a bone labyrinth, inner ear lymph, a spiral organ and an auditory center of a human body. The conventional bone conduction speaker only uses a bone conduction transmission mode when a user is in a noisy environment or in severe sports such as morning running, and is limited by the bone conduction mode, so that the problem of insufficient bass can occur. The existing air conduction loudspeaker usually comprises a support, a U cup and a vibrating diaphragm which are arranged on the support, a magnet and a washer are arranged in the U cup, a magnetic gap is formed, a voice coil is arranged on the vibrating diaphragm, the voice coil can extend to the magnetic gap, a circuit board is electrically connected with the voice coil through a wire to enable the voice coil to vibrate the vibrating diaphragm to make sound, and due to the fact that the circuit board and the wire are electrically connected with the voice coil, the power of the loudspeaker is small, the full-frequency distortion is large, and the tone quality is poor.

Therefore, a new technology needs to be developed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a two unit speaker, and it has bone conduction and air conduction function concurrently, has compensatied the not enough problem of bass that bone conduction appears at the transmission sound in-process, has increased the power of speaker, reduces full frequency distortion, and tone quality is better.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a double-unit loudspeaker comprises a shell, a diaphragm group, an FPC (flexible printed circuit) circuit board, a voice coil, a washer, a magnet, a U-shaped cup, a first backing ring, a diaphragm and a second backing ring; the shell is provided with a front side opening, the first backing ring and the second backing ring are sequentially arranged in the shell from front to back, the first backing ring is abutted against the inner bottom of the shell, and the vibrating reed is arranged between the first backing ring and the second backing ring; the U cup is arranged in the second gasket ring and is abutted against the front side of the vibrating piece; the magnet is arranged in the U-shaped cup, and the washer is stacked on the front side of the magnet; the vibrating diaphragm group is arranged in the shell and is abutted against the front side of the second backing ring; the voice coil is installed on the diaphragm group and extends to a position between the magnet and the U cup, and the FPC circuit board is located between the diaphragm group and the voice coil.

As a preferred scheme, still include the protecting cover, the protecting cover covers in the front side opening part of shell, the periphery of the rear side of protecting cover is subject to the front side of diaphragm group, the all lateral walls of protecting cover are subject to the inside wall of shell, the protecting cover has the first fretwork portion that link up both sides around the protecting cover.

As a preferred scheme, the FPC circuit board is of an annular structure, the FPC circuit board includes an outer ring portion, an inner ring portion and a plurality of connecting arms, both ends of each connecting arm are connected to the outer ring portion and the inner ring portion respectively, a second hollow portion is formed between adjacent connecting arms, the front side surface of the outer ring portion is limited to the periphery of the rear side surface of the diaphragm group, the rear side surface of the outer ring portion is limited to the front side surface of the second backing ring, the front side surface of the inner ring portion is limited to the middle of the rear side surface of the diaphragm group, and the rear side surface of the inner ring portion is limited to the front side surface of the voice coil.

As a preferable scheme, the FPC board has a connection terminal; one end of the connecting end is connected to the peripheral side wall of the outer ring part, and the other end of the connecting end extends out of the shell.

As a preferable scheme, the vibrating reed is of a circular structure, the vibrating reed is provided with a middle main body part and a plurality of third hollowed-out parts penetrating through the front side and the rear side of the vibrating reed, and the plurality of third hollowed-out parts are arranged around the periphery of the middle main body part in an annular structure.

Preferably, the bottom of the U-cup is limited to the front side of the middle body portion.

As a preferred scheme, the number of the magnets is two, the two magnets are sequentially stacked in the U cup, and the washer is stacked on the front side surface of the magnet located on the front side.

The utility model discloses compare with prior art and have obvious advantage and beneficial effect particularly, can know by above-mentioned technical scheme, it mainly is through the diaphragm group, the FPC circuit board, the voice coil loudspeaker voice coil, china department, magnet, the U cup, first backing ring, the trembler, the combination design of second backing ring, make it increase the air conduction structure, thereby bone conduction and air conduction function have concurrently been had, the design of two unit biography sound has been realized, the problem that the bass that appears at the transmission sound in-process of bone conduction is not enough has been remedied, and, through in the diaphragm group, set up the FPC circuit board between the voice coil loudspeaker voice coil, make the voice coil loudspeaker voice coil connect, wherein, the circuit board is similar to multimedia loudspeaker's bullet wave, can realize accurate location voice coil loudspeaker voice coil centrality and straightness, make FPC and trembler vibration, reduce the full frequency distortion of speaker, the power of speaker has been increased, and FPC possesses the circuit, make it not only the shell fragment again the output circuit of speaker, so the speaker lead wire can make the inner weld again, the voice coil wire that the traditional coil loudspeaker wire is played the location glue, the efficiency is reduced traditional technology, the efficiency is improved, the efficiency of the full frequency of the production is also reduced, the efficiency of the best frequency of the FPC production is also reduced, the quality is improved, the quality of the production is improved, the quality is improved, so that the quality is more good.

To illustrate the structural features and technical means of the present invention more clearly and for a specific purpose and function, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

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

fig. 2 is a perspective view of another angle overall structure of the embodiment of the present invention;

fig. 3 is an exploded view of an embodiment of the invention;

fig. 4 is another exploded view of an embodiment of the present invention;

fig. 5 is a cross-sectional view of an embodiment of the invention.

The attached drawings indicate the following:

10. shell 20 and diaphragm group

30. FPC board 31, outer ring portion

32. Inner ring portion 33, connecting arm

34. Second hollow portion 35, connecting end

40. Voice coil 50, washer

60. Magnet 70, U cup

80. First backing ring 90 and vibrating piece

91. Middle body 92, third hollow

100. Second grommet 101, protective cover

1011. A first hollow-out portion.

Detailed Description

Fig. 1 to 5 show specific structures of embodiments of the present invention.

A double-unit loudspeaker comprises a protecting cover 101, a shell 10, a vibrating diaphragm group 20, an FPC (flexible printed circuit) 30, a voice coil 40, a washer 50, a magnet 60, a U-shaped cup 70, a first cushion ring 80, a vibrating diaphragm 90 and a second cushion ring 100; the front side of the housing 10 is open, the first pad ring 80 and the second pad ring 100 are sequentially installed in the housing 10 from front to back, the first pad ring 80 abuts against the inner bottom of the housing 10, and the vibrating reed 90 is installed between the first pad ring 80 and the second pad ring 100; the U-cup 70 is mounted in the second backing ring 100 and abuts against the front side of the vibrating piece 90; the magnet 60 is arranged in the U-shaped cup 70, and the washer 50 is overlapped on the front side of the magnet 60; in this embodiment, two magnets 60 are provided, the two magnets 60 are sequentially stacked in the U-cup 70, and the washer 50 is stacked on the front side surface of the front magnet 60. The diaphragm set 20 is installed in the housing 10 and abuts against the front side of the second backing ring 100; the voice coil 40 is mounted on the diaphragm assembly 20 and extends between the magnet 60 and the U-cup 70, and the FPC board 30 is located between the diaphragm assembly 20 and the voice coil 40. Protecting cover 101 covers in the front side opening part of shell 10, the periphery of the rear side of protecting cover 101 is limited by the front side of diaphragm group 20, protecting cover 101's all lateral walls are limited by the inside wall of shell 10, protecting cover 101 has the first fretwork portion 1011 that link up both sides around protecting cover 101. Here, through the combined design of the diaphragm group 20, the FPC circuit board 30, the voice coil 40, the washer 50, the magnet 60, the U-cup 70, the first backing ring 80, the diaphragm 90, and the second backing ring 100, the air conduction structure is added, thereby having both bone conduction and air conduction functions, realizing a dual-unit sound conduction design, and making up for the problem of insufficient bass in the sound transmission process of bone conduction, and by arranging the FPC circuit board 30 between the diaphragm group 20 and the voice coil 40, the voice coil 40 can be connected by the FPC circuit board 30, wherein the FPC circuit board 30 is similar to the elastic wave of a multimedia speaker, and can realize accurate positioning of the center degree and the verticality of the voice coil 40, so that the FPC elastic sheet vibrates in parallel with the diaphragm 90, thereby reducing the full frequency distortion of the speaker, increasing the power of the speaker, and the FPC circuit board 30 has a circuit, thereby not only being an elastic sheet but also bearing the output circuit of the speaker, the coil lead of the speaker can be made into an inner weld, thereby reducing the wire-positioning glue of the voice coil 40 of the conventional process, reducing the wire-arranging the full frequency distortion of the speaker, increasing the wire radian of the wire-cutting glue of the speaker, and improving the yield of the conventional speaker, and further improving the production efficiency of the product.

As shown in fig. 3 and 4, in the present embodiment, the FPC board 30 is in an annular structure, the FPC board 30 includes an outer ring portion 31, an inner ring portion 32 and a plurality of connecting arms 33, two ends of each connecting arm 33 are respectively connected to the outer ring portion 31 and the inner ring portion 32, a second hollow portion 34 is formed between adjacent connecting arms 33, a front side surface of the outer ring portion 31 is limited by a periphery of a rear side surface of the diaphragm set 20, a rear side surface of the outer ring portion 31 is limited by a front side surface of the second backing ring 100, a front side surface of the inner ring portion 32 is limited by a middle portion of a rear side surface of the diaphragm set 20, and a rear side surface of the inner ring portion 32 is limited by a front side surface of the voice coil 40. Thus, by designing the FPC board 30 into the structure of the outer ring portion 31, the inner ring portion 32 and the connecting arm 33 and having the second hollow portion 34, the whole FPC board 30 can be made more portable, and the FPC board 30 having the annular structure can provide a sufficient space for abduction, so that the sound guiding of the speaker is not affected.

As shown in fig. 1, 2, 3 and 4, in the present embodiment, the FPC board 30 has a connection terminal 35; one end of the connecting end 35 is connected to the peripheral side wall of the outer ring portion 31, and the other end extends to the outside of the housing 10. Thus, by disposing the connection terminals 35 and extending the connection terminals 35 to the outside of the housing 10, the FPC board 30 can be smoothly connected to the external circuit structure.

As shown in fig. 3 and 4, in the present embodiment, the vibrating plate 90 has a circular structure, the vibrating plate 90 has a middle main portion 91 and a plurality of third hollow portions 92 penetrating front and rear sides of the vibrating plate 90, and the plurality of third hollow portions 92 are arranged around the periphery of the middle main portion 91 in a ring structure. The bottom of the U-cup 70 is limited to the front side of the middle body portion 91. In this way, the vibrating piece 90 is made more lightweight as a whole by providing the third hollow portion 92 in the vibrating piece 90.

To sum up, the utility model discloses a design focus lies in, it mainly is through the diaphragm group, the FPC circuit board, the voice coil loudspeaker voice coil, china department, magnet, the U cup, first backing ring, the trembler, the combination design of second backing ring, make it increase the air conduction structure, thereby bone conduction and air conduction function have concurrently, the design of two unit biography sound has been realized, the problem that the bass that bone conduction appears in the transmission sound in-process is not enough has been compensatied, and, through set up the FPC circuit board between the diaphragm group, the voice coil loudspeaker voice coil, make the voice coil loudspeaker voice coil can adopt the FPC circuit board to connect, wherein, the FPC circuit board is similar to the bullet wave of multimedia loudspeaker, can realize accurate location voice coil loudspeaker voice coil central degree and straightness that hangs down, make FPC shell fragment and trembler parallel vibration, reduce speaker system distortion, the power of loudspeaker has been increased, and the FPC circuit board possesses the circuit, make it be the shell fragment and undertaken the output circuit of speaker, the speaker coil lead wire can make the inner weld again, the voice coil wire line positioning who has reduced traditional handicraft and glue radian, the whole frequency of drawing is glued, the fine product has also been reduced to traditional technology location simultaneously, the fine product of traditional technology that has not causing, the full frequency of drawing, the yield has been addd, the quality has been increased, the production is improved, the production efficiency, so, the quality is better.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. A dual-unit speaker, characterized by: the vibration isolator comprises a shell, a vibration diaphragm group, an FPC (flexible printed circuit) board, a voice coil, a washer, a magnet, a U-shaped cup, a first backing ring, a vibration diaphragm and a second backing ring; the shell is provided with a front side opening, the first backing ring and the second backing ring are sequentially arranged in the shell from front to back, the first backing ring is abutted against the inner bottom of the shell, and the vibrating reed is arranged between the first backing ring and the second backing ring; the U cup is arranged in the second gasket ring and is abutted against the front side of the vibrating piece; the magnet is arranged in the U-shaped cup, and the washer is stacked on the front side of the magnet; the vibrating diaphragm group is arranged in the shell and is abutted against the front side of the second backing ring; the voice coil is installed on the diaphragm group and extends to a position between the magnet and the U cup, and the FPC circuit board is located between the diaphragm group and the voice coil.

2. The dual-unit speaker of claim 1, wherein: still include the protecting cover, the protecting cover covers in the front side opening part of shell, the periphery of the rear side of protecting cover is subject to the front side of diaphragm group, the week lateral wall of protecting cover is subject to the inside wall of shell, the protecting cover has the first fretwork portion that link up both sides around the protecting cover.

3. The dual-unit speaker of claim 1, wherein: the FPC circuit board is the loop configuration, the FPC circuit board includes outer loop portion, interior ring portion and a plurality of linking arm, the both ends of linking arm are connected respectively in outer loop portion, interior ring portion, are formed with second fretwork portion between the adjacent linking arm, the leading flank of outer loop portion is subject to the periphery of the trailing flank of diaphragm group, the trailing flank of outer loop portion is subject to the leading flank of second backing ring, the leading flank of interior ring portion is subject to the middle part of the trailing flank of diaphragm group, the trailing flank of interior ring portion is subject to the leading flank of voice coil loudspeaker voice coil.

4. The dual-unit speaker of claim 3, wherein: the FPC circuit board is provided with a connecting end; one end of the connecting end is connected to the peripheral side wall of the outer ring portion, and the other end of the connecting end extends to the outside of the shell.

5. The dual-unit speaker of claim 1, wherein: the vibrating piece is of a circular structure and is provided with a middle main body portion and a plurality of third hollowed-out portions penetrating through the front side and the rear side of the vibrating piece, and the third hollowed-out portions are arranged around the periphery of the middle main body portion in an annular structure.

6. The dual-unit speaker of claim 5, wherein: the bottom of the U-shaped cup is limited by the front side surface of the middle main body part.

7. The dual-unit speaker of claim 1, wherein: the U-shaped cup is characterized in that the number of the magnets is two, the two magnets are sequentially stacked in the U-shaped cup, and the washer is stacked on the front side face of the magnet located on the front side.