CN220307379U

CN220307379U - Novel flat-panel loudspeaker

Info

Publication number: CN220307379U
Application number: CN202321843043.7U
Authority: CN
Inventors: 胡小兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2024-01-05
Anticipated expiration: 2033-07-13

Abstract

The utility model discloses a novel flat-panel loudspeaker, which comprises a first circuit board, a second circuit board, an upper clamping plate, a first insulating gasket, a diaphragm, a second insulating gasket, a lower clamping plate, a first fan-shaped array magnetic circuit group and a second fan-shaped array magnetic circuit group, wherein concentric circle circuits and insulating layers are arranged on two surfaces of the diaphragm, and electric conductors are arranged on the surfaces of the insulating layers. The utility model has reasonable structural design, adopts the sector array magnetic circuit group, and compared with the annular magnet, the sector array magnetic circuit group has smaller material area, lower cost and less leftover materials during preparation, reduces material loss, adopts a concentric circuit formed by combining at least two groups of conductive coils in a concentric circle mode, has uniform gap between two adjacent groups of conductive coils, and improves sound quality effect.

Description

Novel flat-panel loudspeaker

Technical Field

The utility model relates to the technical field of loudspeakers, in particular to a novel flat-panel loudspeaker.

Background

With the rapid development of technology, the popularity of audio equipment is higher and higher, and in many recreation ways, high-quality music enjoyment is slowly popularized to the public, and loudspeakers for playing audio are widely applied to the current intelligent mobile equipment, so that the requirements of people on the loudspeakers are not only limited to playing video and audio, but also have higher requirements on the tone quality and reliability of sound played by the loudspeakers. Traditional speakers generally adopt a single-layer voice coil design, and too many voice coil wires can lead to a small space range, which results in unbalanced diaphragms, thereby leading to insufficient high sound quality.

To improve the above problems, flat speakers with double-layer circular wound voice coil diaphragms are also commercially available, but such flat speakers still have the following disadvantages: 1. the ring-shaped magnet is adopted, so that the consumption is high, the cost is high, the scraps are much during preparation, and the material loss is high; 2. the spiral line is adopted on the membrane, and after the two adjacent groups of coils reversely rotate, gaps among the groups are uneven.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide the novel flat loudspeaker which has the advantages of less magnetic material consumption, low cost, uniform gaps between the conductive coils and good sound quality effect.

In order to achieve the above object, the utility model provides a novel flat speaker, which comprises a first circuit board, a second circuit board, an upper clamping plate, a first insulating gasket, a diaphragm, a second insulating gasket, a lower clamping plate, a first fan-shaped array magnetic circuit set and a second fan-shaped array magnetic circuit set, wherein the first circuit board, the second circuit board, the upper clamping plate, the first insulating gasket, the diaphragm, the second insulating gasket and the lower clamping plate are sequentially assembled together in a laminated manner, a welding spot is arranged on the surface of the first circuit board, the first fan-shaped array magnetic circuit set is positioned in an inner cavity of the upper clamping plate, the second fan-shaped array magnetic circuit set is positioned in an inner cavity of the lower clamping plate, the diaphragm is positioned between the first insulating gasket and the second insulating gasket, the edge part of the diaphragm is pressed and fixed through the first insulating gasket and the second insulating gasket, two surfaces of the diaphragm are respectively provided with concentric circular circuits and insulating layers covering the surfaces of the concentric circular circuits, each concentric circular circuit is formed by at least two groups of conductive coils, the tail ends of the two adjacent groups of conductive coils are mutually connected in a concentric circular combination mode, the tail ends of the two groups of the conductive coils are connected with each other, the tail ends of the two groups of the adjacent conductive coils extend to the same conductive layer on the first end of the diaphragm, and the tail ends of the two conductive coils extend to the same end of the same conductive layer on the insulator, and the inner surface of the diaphragm is connected with the inner insulator.

Preferably, the first circuit board is an FPC flexible circuit board, and the first circuit board is arranged in a circular arc shape.

Preferably, the insulating layer is provided as an insulating varnish, and the electric conductor is provided as an electrically conductive silver paste.

Preferably, the current direction between adjacent sets of conductive coils is opposite.

Preferably, the first fan-shaped array magnetic circuit group and the second fan-shaped array magnetic circuit group both comprise a circular magnet positioned in the middle and a plurality of fan-shaped magnet arrays which are equally spaced and uniformly arranged around the circular magnet, and each fan-shaped magnet array consists of at least two fan-shaped magnets which are spaced from inside to outside;

or, the first fan-shaped array magnetic circuit group and the second fan-shaped array magnetic circuit group each comprise a circular magnet positioned in the middle and at least two groups of magnet arrays surrounding the circular magnet in a concentric circle arrangement mode, each group of magnet arrays consists of a plurality of fan-shaped magnets which are distributed annularly and are arranged at intervals, and the fan-shaped magnets of two adjacent groups of magnet arrays are staggered.

Preferably, the number of sector magnets in each set of sector magnet arrays corresponds to the number of sets of conductive coils in concentric circular lines.

Preferably, the connection points and/or conductors of two adjacent groups of conductive coils are located in the gaps between the two groups of fan-shaped magnet arrays.

Preferably, the speaker further comprises a first conductive column and a second conductive column, wherein one end of the first conductive column is connected with the first electrode on the edge of the diaphragm, the other end of the first conductive column sequentially penetrates through the first insulating gasket, the upper clamping plate, the second circuit board and the first circuit board and then stretches out of the speaker, one end of the second conductive column is connected with the second electrode on the edge of the diaphragm, and the other end of the second conductive column sequentially penetrates through the first insulating gasket, the upper clamping plate, the second circuit board and the first circuit board and then stretches out of the speaker.

Preferably, springs are respectively sleeved on the first conductive column and the second conductive column, and the springs are located between the first insulating gasket and the second circuit board.

Preferably, a plurality of guide posts are arranged on the edge part of the inner surface of the lower clamping plate, the guide posts sequentially penetrate through the second insulating gasket, the diaphragm, the first insulating gasket, the upper clamping plate and the second circuit board and then extend out, and part of the guide posts also penetrate through the first circuit board.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model has reasonable structural design, adopts the sector array magnetic circuit group, and compared with the annular magnet, the sector array magnetic circuit group has smaller material area, lower cost and less leftover materials during preparation, reduces material loss, adopts a concentric circuit formed by combining at least two groups of conductive coils in a concentric circle mode, has uniform gap between two adjacent groups of conductive coils, and improves sound quality effect.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a novel flat panel speaker according to an embodiment of the present utility model;

fig. 2 is an exploded view of a novel flat panel speaker provided by an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a novel flat panel speaker provided in accordance with an embodiment of the present utility model;

fig. 4 is a second cross-sectional view of the novel flat panel speaker provided by the embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a first fan-shaped array magnetic circuit set or a second fan-shaped array magnetic circuit set according to an embodiment of the present utility model;

fig. 6 is a schematic structural diagram II of a first fan-shaped array magnetic circuit set or a second fan-shaped array magnetic circuit set according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the overall structure of a diaphragm according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a structure of a membrane provided in an embodiment of the present utility model without an insulating layer and a conductive body;

fig. 9 is an enlarged view of a partial structure of a diaphragm provided in an embodiment of the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 and 2, an embodiment of the present utility model provides a novel flat panel speaker, which includes a first circuit board 1, a second circuit board 2, an upper clamping plate 3, a first insulating gasket 4, a diaphragm 5, a second insulating gasket 6, a lower clamping plate 7, a first fan-shaped array magnetic circuit set 8, a second fan-shaped array magnetic circuit set 9, and the like, and each component of the embodiment is described in detail below with reference to the accompanying drawings.

As shown in fig. 1, 3 and 4, during specific installation, the first circuit board 1, the second circuit board 2, the upper clamping plate 3, the first insulating gasket 4, the diaphragm 5, the second insulating gasket 6 and the lower clamping plate 7 are sequentially assembled together from top to bottom, the first fan-shaped array magnetic circuit group 8 is located in the inner cavity of the upper clamping plate 3, the second fan-shaped array magnetic circuit group 9 is located in the inner cavity of the lower clamping plate 7, the diaphragm 5 is located between the first insulating gasket 4 and the second insulating gasket 6, and the edge part of the diaphragm 5 is fixed by pressing the first insulating gasket 4 and the second insulating gasket 6.

In the present embodiment, the surface of the first circuit board 1 is provided with the solder joints 13 for wiring, the first circuit board 1 may be provided as an FPC flexible circuit board, and the first circuit board 1 may be provided in a circular arc shape.

As shown in fig. 2, the middle part of the second circuit board 2 may be provided with a central through hole 21, the middle part of the upper clamping plate 3 may be provided with a central through hole 31, and a cross connection frame 32 is provided in the central through hole 31.

As shown in fig. 1, 2 and 4, a plurality of guide posts 71 are provided on the edge portion of the inner surface of the lower clamping plate 7, the guide posts 71 may sequentially pass through the second insulating washer 6, the membrane 5, the first insulating washer 4, the upper clamping plate 3 and the second circuit board 2 and then extend to the outside, and a part of the guide posts 71 may also pass through the first circuit board 1. In addition, the middle of the lower clamping plate 7 may be provided with a central through hole 72, and a cross-shaped connection frame 73 is provided in the central through hole 72.

As shown in fig. 5, each of the first and second sector array magnetic circuit groups 8 and 9 may include a circular magnet 81 located in the middle and four sets of sector magnet arrays 82 equally spaced and uniformly arranged around the circular magnet 81, each set of sector magnet arrays 82 being composed of sector magnets 821, 822 and 823 spaced from inside to outside, the arc lengths of the sector magnets 821, 822 and 823 being sequentially increased from inside to outside. In this embodiment, a cross-shaped gap 83 may be formed between the four sets of fan-shaped magnet arrays 82, and the gaps between the four sets of fan-shaped magnet arrays 82 are aligned.

As shown in fig. 6, in another embodiment, the first fan-shaped array magnetic circuit set 8 and the second fan-shaped array magnetic circuit set 9 may be arranged in other manners, and each of the first fan-shaped array magnetic circuit set and the second fan-shaped array magnetic circuit set includes a circular magnet 81a located in the middle and three sets of magnet arrays surrounding the circular magnet 81a in a concentric circle arrangement manner, where the first set of magnet arrays includes four fan-shaped magnets 841 distributed annularly and arranged at intervals, the second set of magnet arrays includes four fan-shaped magnets 851 distributed annularly and arranged at intervals, the third set of magnet arrays includes four fan-shaped magnets 861 distributed annularly and arranged at intervals, and in the three sets of magnet arrays, the fan-shaped magnets of two adjacent sets of magnet arrays are staggered with each other, and the gaps between the sets are staggered.

In this embodiment, the sector array magnetic circuit set is adopted, and compared with the annular magnet, the sector array magnetic circuit set has the advantages that the material area required by the sector magnet is smaller (for example, 400 sector magnets are produced only by 100 annular magnets, and half of the material area) and the cost is lower, and the leftover materials are less during preparation, so that the material loss is reduced.

As shown in fig. 7 to 9, concentric circuits 51 and an insulating layer 52 covering the surfaces of the concentric circuits 51 are provided on both surfaces of the diaphragm 5, each concentric circuit 51 may be formed by combining conductive coils 511, 512 and 513 in concentric circles, three sets of conductive coils are formed by winding conductive wires, the first and second ends of two adjacent sets of conductive coils are connected to each other, and the start end of the outermost conductive coil 511 is connected to the first electrode 54 on the edge of the diaphragm 5. Wherein the current direction between two adjacent groups of conductive coils is opposite.

It should be noted that, the number of the conductive coils and the number of the fan-shaped magnets in each set of fan-shaped magnet arrays may be arbitrarily changed according to actual needs, so long as the number of the fan-shaped magnets in each set of fan-shaped magnet arrays 82 corresponds to the number of the conductive coils in the concentric circuit 51, which is not limited to this embodiment.

As shown in fig. 7, each insulating layer 52 spans all the conductive coils on the same surface of the diaphragm 5, and a conductive body 53 is provided on the surface of each insulating layer 52, one end of the conductive body 53 is connected to the second electrode 55 on the edge of the diaphragm 5, and the other end of the conductive body 53 extends to the center point of the diaphragm 5 and is connected to the tail end of the innermost conductive coil 513, so that line conduction can be achieved.

In the present embodiment, the insulating layer 52 may be preferably provided as an insulating varnish, and the conductor 53 may be preferably provided as conductive silver paste.

Preferably, after the first magnetic array sector circuit set 8 and the second magnetic array sector circuit set 9 are installed, the connection portion 514 between the conductive coil 511 and the conductive coil 512, the connection portion 515 between the conductive coil 512 and the conductive coil 513, and the conductor 53 are located in the gap 83 between the two magnetic array sectors 82, and the gap in the magnetic array sector circuit set is avoided.

As shown in fig. 1, 2 and 3, the flat speaker may further be provided with a first conductive post 10 and a second conductive post 11, wherein one end of the first conductive post 10 is connected with a first electrode on the edge of the diaphragm 5, and the other end of the first conductive post 10 sequentially passes through the first insulating gasket 4, the upper plate 3, the second circuit board 2 and the first circuit board 1 and then protrudes to the outside, one end of the second conductive post 11 is connected with a second electrode on the edge of the diaphragm 5, and the other end of the second conductive post 11 sequentially passes through the first insulating gasket 4, the upper plate 3, the second circuit board 2 and the first circuit board 1 and then protrudes to the outside.

In this embodiment, preferably, the first conductive post 10 and the second conductive post 11 may be each configured as a gold-plated T-shaped conductive copper post, and the first conductive post 10 and the second conductive post 11 may guide current into the concentric circular line 51 of the diaphragm 5. In addition, the first conductive post 10 and the second conductive post 11 may be respectively sleeved with a spring 12, and the spring 12 is located between the first insulating washer 4 and the second circuit board 2.

The embodiment adopts a concentric circle circuit formed by combining at least two groups of conductive coils in a concentric circle mode, and the gaps between two adjacent groups of conductive coils are uniform, so that the sound quality effect is improved.

The above examples are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present utility model should be made in the equivalent manner, and the embodiments are included in the protection scope of the present utility model.

Claims

1. A novel flat panel speaker, characterized in that: including first circuit board, second circuit board, punch holder, first insulating washer, diaphragm, second insulating washer, punch holder, first fan-shaped array magnetic circuit group and second fan-shaped array magnetic circuit group, first circuit board, second circuit board, punch holder, first insulating washer, diaphragm, second insulating washer and punch holder stack up in proper order and assemble together, be equipped with the solder joint on the surface of first circuit board, first fan-shaped array magnetic circuit group is located the inner chamber of punch holder, second fan-shaped array magnetic circuit group is located the inner chamber of punch holder, the diaphragm is located between first insulating washer and the second insulating washer, the marginal portion of diaphragm compresses tightly fixedly through first insulating washer and the second insulating washer, all be equipped with concentric circle circuit and cover the insulating layer at concentric circle circuit surface on two surfaces of diaphragm, every concentric circle circuit is by two sets of conductive coil with concentric circle combination mode group's first end and the marginal first electrode of the first electric wire connection of first fan-shaped array magnetic circuit group on, the diaphragm is located first insulating washer and second insulating washer, the other end that the electric conductor of the first electric conductor coil of every adjacent two sets of conductive coil's head and tail is connected with the marginal on the same conductor, the insulator extends the insulator of the same insulator on the diaphragm and the insulator is connected to the insulator's the insulator on the insulator's the insulator.

2. A novel flat panel speaker as claimed in claim 1, wherein: the first circuit board is arranged as an FPC flexible circuit board, and the first circuit board is arranged in a circular arc shape.

3. A novel flat panel speaker as claimed in claim 1, wherein: the insulating layer is set to be insulating paint, and the electric conductor is set to be conductive silver paste.

4. A novel flat panel speaker as claimed in claim 1, wherein: the current direction between adjacent sets of conductive coils is opposite.

5. A novel flat panel speaker as claimed in claim 1, wherein: the first fan-shaped array magnetic circuit group and the second fan-shaped array magnetic circuit group comprise a circular magnet positioned in the middle and a plurality of fan-shaped magnet arrays which are uniformly arranged around the circular magnet at equal intervals, and each fan-shaped magnet array consists of at least two fan-shaped magnets which are arranged at intervals from inside to outside;

6. The novel flat panel speaker of claim 5, wherein: the number of sector magnets in each set of sector magnet arrays corresponds to the number of sets of conductive coils in concentric circular lines.

7. The novel flat panel speaker of claim 5, wherein: the connection parts and/or conductors of two adjacent groups of conductive coils are positioned in the gaps between the two groups of fan-shaped magnet arrays.

8. A novel flat panel speaker as claimed in claim 1, wherein: the novel membrane comprises a membrane, and is characterized by further comprising a first conductive column and a second conductive column, wherein one end of the first conductive column is connected with a first electrode on the edge of the membrane, the other end of the first conductive column sequentially penetrates through a first insulating gasket, an upper clamping plate, a second circuit board and the first circuit board and then stretches out of the membrane, one end of the second conductive column is connected with a second electrode on the edge of the membrane, and the other end of the second conductive column sequentially penetrates through the first insulating gasket, the upper clamping plate, the second circuit board and the first circuit board and then stretches out of the membrane.

9. The novel flat panel speaker of claim 8, wherein: and springs are respectively sleeved on the first conductive column and the second conductive column, and are positioned between the first insulating gasket and the second circuit board.

10. A novel flat panel speaker as claimed in claim 1, wherein: the edge part of the inner surface of the lower clamping plate is provided with a plurality of guide posts, the guide posts sequentially penetrate through the second insulating gasket, the diaphragm, the first insulating gasket, the upper clamping plate and the second circuit board and then extend out, and part of the guide posts also penetrate through the first circuit board.