CN217935939U - Small-sized flat panel loudspeaker - Google Patents

Abstract

The utility model belongs to the technical field of flat panel loudspeakers, in particular to a small flat panel loudspeaker, which comprises a circular upper mounting seat, an annular diaphragm seat and a circular lower mounting seat which are arranged from top to bottom in sequence; the annular hole of the annular diaphragm seat is provided with a diaphragm, and the diaphragm is provided with a voice coil; an upper sound cavity is arranged between the voice coil and the circular upper mounting seat, and a plurality of first magnets are uniformly arranged in the upper sound cavity; a lower sound cavity is arranged between the voice coil and the circular lower mounting seat, and a plurality of second magnets are uniformly arranged in the lower sound cavity; vibration gaps are arranged between the first magnet and the voice coil and between the second magnet and the voice coil; the upper end of the round upper mounting seat is provided with a sound outlet hole communicated with the upper sound cavity in a penetrating way, and the outer wall of the round lower mounting seat is provided with an air hole communicated with the lower sound cavity in a penetrating way; the round voice coil is arranged on the round vibrating diaphragm, so that the space utilization rate of the voice coil is improved, and the integral volume of the small flat-panel loudspeaker can be further reduced; the voice coil loudspeaker voice coil is for printing on the vibrating diaphragm, and processing is convenient, has reduced processing cost and machining efficiency.

Description

Small-sized flat panel loudspeaker

Technical Field

The utility model belongs to the technical field of dull and stereotyped loudspeaker, especially, relate to a small-size flat panel loudspeaker.

Background

The small loudspeaker is a small electroacoustic transducer, and is widely applied to electronic products such as tablet computers, MP3 s, MP4 s, earphones, notebook computers, mobile terminals, personal Digital Assistants (PDAs), and the like. Its magnetic circuit system forms a ring magnetic gap, between which a uniform magnetic field is distributed. The vibration system of the loudspeaker is composed of a ring-shaped voice coil wound by a lead and a vibrating diaphragm connected with the voice coil. After the voice coil is fed with signal voltage, current is generated, the voice coil cuts magnetic lines of force, acting force is generated, the vibrating diaphragm is driven to move up and down, and the vibrating diaphragm drives air to make corresponding sound. The whole process is as follows: electro-mechanical-acoustic conversion.

For example: chinese utility model patent application No. CN201922092349.3 discloses a dull and stereotyped miniature speaker, including loudspeaker upper bracket, dull and stereotyped vibrating diaphragm, first magnet group, voice coil loudspeaker voice coil, loudspeaker upper bracket lower extreme is provided with dull and stereotyped vibrating diaphragm, dull and stereotyped vibrating diaphragm lower extreme is provided with the loudspeaker lower carriage, the loudspeaker upper bracket with be provided with between the dull and stereotyped vibrating diaphragm first magnet group, the loudspeaker lower carriage with be provided with second magnet group between the dull and stereotyped vibrating diaphragm, be provided with on the dull and stereotyped vibrating diaphragm the voice coil loudspeaker voice coil. The utility model discloses dull and stereotyped vibrating diaphragm adopts PU or the material of cutting according to the letter on the letter mark, the voice coil loudspeaker voice coil is printed on the vibrating diaphragm of PU or the material of cutting according to the letter mark, dull and stereotyped vibrating diaphragm both sides all set up magnet, the magnetic field that both sides magnet formed makes the voice coil loudspeaker voice coil move in even magnetic field, thereby promote speaker performance, make tone quality better, the voice coil loudspeaker voice coil adopts the aluminium wire brush on dull and stereotyped vibrating diaphragm, original voice coil loudspeaker voice coil adds the detached mode of dull and stereotyped vibrating diaphragm relatively like this, wholly make voice coil loudspeaker voice coil aluminium wire brush system, the coil position moves down, improve speaker performance, tone quality is better, reduce the distortion rate.

However, the flat micro-speaker described above has the following drawbacks: 1. the flat vibrating diaphragm of the flat micro-speaker is also rectangular, the voice coil arranged on the flat vibrating diaphragm is also rectangular, and the space utilization rate of the voice coil is not high, so that the whole volume of the flat micro-speaker cannot be further reduced. 2. The voice coil loudspeaker voice coil drives the sound wave that dull and stereotyped vibrating diaphragm vibration produced and directly spreads away through the sound outlet, because dull and stereotyped micro loudspeaker itself is less, if when needing the great stronger sound of output, need increase vibrating diaphragm and voice coil loudspeaker voice coil size to and reinforcing magnetic field, cause flat plate micro loudspeaker's overall structure not compact enough.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size flat panel speaker, the dull and stereotyped vibrating diaphragm that aims at solving dull and stereotyped micro speaker among the prior art also is the rectangle, the voice coil loudspeaker voice coil that sets up on the dull and stereotyped vibrating diaphragm also is the rectangle, the space utilization of voice coil loudspeaker voice coil is not high, the whole volume that leads to dull and stereotyped micro speaker can't further reduce, in addition, the voice coil loudspeaker voice coil drives the direct sound wave of dull and stereotyped vibrating diaphragm vibration production and propagates away through the sound outlet, because dull and stereotyped micro speaker itself is less, if need export during the great stronger sound, need increase vibrating diaphragm and voice coil size, and strengthen magnetic field, cause the not compact enough technical problem of the overall structure of dull and stereotyped micro speaker.

In order to achieve the above object, an embodiment of the present invention provides a small flat panel speaker, which includes a circular upper mounting seat, an annular diaphragm seat, and a circular lower mounting seat, which are sequentially arranged from top to bottom; the annular hole of the annular diaphragm seat is provided with a diaphragm, and the diaphragm is provided with a voice coil; an upper sound cavity is formed between the voice coil and the circular upper mounting seat, and a plurality of first magnets are uniformly arranged in the upper sound cavity; a lower sound cavity is formed between the voice coil and the circular lower mounting seat, and a plurality of second magnets are uniformly arranged in the lower sound cavity; vibration gaps are arranged between the first magnet and the voice coil and between the second magnet and the voice coil; the upper end of the circular upper mounting seat is provided with a sound outlet hole communicated with the upper sound cavity in a penetrating mode, and the outer wall of the circular lower mounting seat is provided with an air hole communicated with the lower sound cavity in a penetrating mode.

Optionally, a resonance shell covering the sound outlet hole is arranged at the upper end of the circular upper mounting seat, a resonance cavity is arranged in the resonance shell, and a sound outlet communicated with the resonance cavity is arranged on the outer wall of the resonance shell.

Optionally, the resonant shell and the resonant cavity are both cam-shaped.

Optionally, the sound outlet is smaller than the sound outlet.

Optionally, a plurality of positioning columns are annularly and uniformly distributed on the circular lower mounting seat around the lower sound cavity, a plurality of first positioning holes are annularly and uniformly distributed on the annular vibrating diaphragm seat, a plurality of second positioning holes are annularly and uniformly distributed on the circular upper mounting seat, and each first positioning hole and each second positioning hole are sequentially sleeved on one positioning column.

Optionally, the size of one end of the lower sound cavity close to the diaphragm is increased to form a clearance groove, and the clearance groove is larger than or equal to the annular hole of the annular diaphragm seat.

Optionally, a plurality of first magnet mounting grooves are arranged in the upper sound cavity, and the plurality of first magnets are respectively mounted in the plurality of first magnet mounting grooves.

Optionally, a plurality of second magnet mounting grooves are arranged in the lower sound cavity, and the plurality of second magnets are respectively mounted in the plurality of second magnet mounting grooves.

Optionally, the diameters of the circular upper mounting seat, the annular diaphragm seat and the circular lower mounting seat are 10-15mm.

Optionally, the voice coil is made of aluminum or copper, and the voice coil is printed on the diaphragm.

Compared with the prior art, the embodiment of the utility model provides an above-mentioned one or more technical scheme in the small-size flat panel speaker have one of following technological effect at least:

the circular upper mounting seat, the annular diaphragm seat and the circular lower mounting seat are circular, the voice coil is also approximately circular, and the circular voice coil is arranged on the circular diaphragm, so that the space utilization rate of the voice coil is improved, and the integral volume of the small flat-panel loudspeaker can be further reduced.

The upper end of circular last mount pad is equipped with the resonance shell that covers out the sound hole, is equipped with the resonant cavity in the resonance shell, and the voice coil loudspeaker voice coil moves in magnetic field, drives the vibrating diaphragm vibration and produces the sound wave, and the sound wave is from going out the sound hole and passing into the resonant cavity, and the sound wave fully reflects at the resonant cavity and forms resonance, makes sound grow, and increase sound intensity need not to change vibrating diaphragm and voice coil loudspeaker voice coil size to and need not reinforcing magnetic field intensity, can export great stronger sound.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is a schematic structural view of the small flat panel speaker of the present invention.

Fig. 2 is a plan view of the small flat panel speaker of the present invention.

Fig. 3 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2.

Fig. 4 is a first exploded view of the small flat panel speaker of the present invention.

Fig. 5 is a second exploded view of the small flat panel speaker of the present invention.

Wherein, in the figures, the various reference numbers:

100. a circular upper mounting seat; 110. an upper sound cavity; 111. a first magnet mounting groove; 120. a first magnet; 121. a vibration gap; 130. a sound outlet hole; 140. a second positioning hole;

200. an annular diaphragm seat; 210. annular ring; 220. vibrating diaphragm; 230. a voice coil; 240. a first positioning hole;

300. a circular lower mounting seat; 310. a lower sound cavity; 311. a second magnet mounting groove; 312. an empty avoiding groove; 320. a second magnet; 330. air holes; 340. and a positioning column.

400. A resonating shell; 410. a resonant cavity; 420. and a sound outlet.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings only for the convenience of description of the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the 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," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 5, a small flat panel speaker is provided, which includes a circular upper mounting base 100, a circular diaphragm base 200, and a circular lower mounting base 300, which are sequentially arranged from top to bottom.

Referring to fig. 3, 4 and 5, the annular hole 210 of the annular diaphragm seat 200 is provided with a diaphragm 220, and the diaphragm 220 is provided with a voice coil 230. An upper sound cavity 110 is formed between the voice coil 230 and the circular upper mounting base 100, and a plurality of first magnets 120 are uniformly arranged in the upper sound cavity 110. A lower sound cavity 310 is formed between the voice coil 230 and the circular lower mounting base 300, and a plurality of second magnets 320 are uniformly arranged in the lower sound cavity 310. A vibration gap 121 is arranged between the first magnet 120, the second magnet 320 and the voice coil 230;

referring to fig. 3, 4 and 5, the upper end of the circular upper mounting seat 100 is provided with a sound outlet 130 communicated with the upper sound cavity 110, and the outer wall of the circular lower mounting seat 300 is provided with an air hole 330 communicated with the lower sound cavity 310.

Compared with the prior art, the embodiment of the utility model provides an above-mentioned one or more technical scheme in the small-size flat panel speaker have one of following technological effect at least:

referring to fig. 3, 4 and 5, the circular upper mount 100, the annular diaphragm mount 200 and the circular lower mount 300 are all circular, the voice coil 230 is also substantially circular, and the circular voice coil 230 is disposed on the circular diaphragm 220, so that the space utilization rate of the voice coil 230 is improved, and the overall volume of the small flat panel speaker can be further reduced.

In another embodiment of the present invention, referring to fig. 3, 4 and 5, a resonance housing 400 covering the sound outlet 130 is disposed at the upper end of the circular upper mounting seat 100, a resonance cavity 410 is disposed in the resonance housing 400, and a sound outlet 420 communicating with the resonance cavity 410 is disposed on the outer wall of the resonance housing 400.

Specifically, referring to fig. 3, 4 and 5, the first magnet 120 and the second magnet 320 generate a magnetic field around the voice coil 230, after the voice coil 230 is powered on, the voice coil 230 moves (vibrates) in the magnetic field to drive the diaphragm 220 to vibrate to generate sound waves, the sound waves are transmitted into the resonant cavity 410 from the sound outlet 130, the sound waves are sufficiently reflected in the resonant cavity 410 to form resonance, so that the sound is amplified, the sound intensity is increased, the sizes of the diaphragm 220 and the voice coil 230 do not need to be changed, and the magnetic field intensity does not need to be enhanced, that is, the small flat panel speaker has a small volume, and can output a large and strong sound.

Further, the resonant shell 400 and the resonant cavity 410 are both cam-shaped, and the resonant cavity 410 is irregular, so that the sound wave can be better reflected and form resonance in the resonant cavity 410, and the sound wave resonance effect is good.

In other embodiments, the resonant housing 400 and the resonant cavity 410 may also have other shapes, and are not limited herein.

Further, referring to fig. 3, 4 and 5, the sound outlet 420 is smaller than the sound outlet 130, so that the sound waves are transmitted from the sound outlet 420 after the resonance in the resonant cavity 410 is completed.

In another embodiment of the present invention, referring to fig. 3, fig. 4 and fig. 5, the circular lower mounting seat 300 surrounds the annular uniform distribution of the lower sound cavity 310 and has a plurality of positioning columns 340, the annular uniform distribution of the annular diaphragm seat 200 has a plurality of first positioning holes 240, the annular uniform distribution of the circular upper mounting seat 100 has a plurality of second positioning holes 140, each of the first positioning holes 240 and each of the second positioning holes 140 are sequentially sleeved on one of the positioning columns 340, so as to conveniently install the annular diaphragm seat 200 and the circular upper mounting seat 100 on the circular lower mounting seat 300, thereby facilitating the assembly.

In another embodiment of the present invention, referring to fig. 3, 4 and 5, the size of the end of the lower sound cavity 310 near the diaphragm 220 is increased to form a clearance groove 312, and the clearance groove 312 is greater than or equal to the annular hole 210 of the annular diaphragm seat 200. The clearance groove 312 can provide a clearance space for the vibrating diaphragm 220 during vibration, so that the vibrating amplitude of the vibrating diaphragm 220 is larger, the sensitivity is increased, and the tone quality is better.

In another embodiment of the present invention, referring to fig. 3, 4 and 5, a plurality of first magnet mounting grooves 111 are arranged in the upper sound cavity 110, and a plurality of first magnets 120 are respectively mounted in the plurality of first magnet mounting grooves 111, so that the mounting is firm.

Further, referring to fig. 3, 4 and 5, a plurality of second magnet mounting grooves 311 are arranged in the lower sound cavity 310, and a plurality of second magnets 320 are respectively mounted in the plurality of second magnet mounting grooves 311, so that the mounting is firm.

The first magnet 120 and the second magnet 320 may be provided in 4-8 strips, preferably 5 strips, which is not limited herein.

In another embodiment of the present invention, referring to fig. 3, 4 and 5, the diameter of the circular upper mounting seat 100, the annular diaphragm seat 200 and the circular lower mounting seat 300 is 10-15mm, preferably 13mm. Therefore, the small flat panel speaker is compact in overall structure.

The utility model discloses a further embodiment, the material of voice coil 230 is aluminum product or copper product, just the voice coil 230 is printed on the vibrating diaphragm 220, and processing is convenient, has reduced processing cost and machining efficiency.

The rest of this embodiment is the same as the first embodiment, and the features that are not explained in this embodiment are all explained as the first embodiment, which is not described herein again.

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, its framework form can be nimble changeable, can derive series of products. But merely as a matter of simple deductions or substitutions, should be considered as belonging to the scope of patent protection of the present invention as determined by the claims submitted.

Claims (10)

1. A small flat panel loudspeaker is characterized by comprising a circular upper mounting seat, an annular diaphragm seat and a circular lower mounting seat which are sequentially arranged from top to bottom; the annular hole of the annular diaphragm seat is provided with a diaphragm, and the diaphragm is provided with a voice coil; an upper sound cavity is formed between the voice coil and the circular upper mounting seat, and a plurality of first magnets are uniformly arranged in the upper sound cavity; a lower sound cavity is formed between the voice coil and the circular lower mounting seat, and a plurality of second magnets are uniformly arranged in the lower sound cavity; vibration gaps are arranged between the first magnet and the voice coil and between the second magnet and the voice coil; the upper end of the circular upper mounting seat is provided with a sound outlet hole communicated with the upper sound cavity in a penetrating mode, and the outer wall of the circular lower mounting seat is provided with an air hole communicated with the lower sound cavity in a penetrating mode.

2. A small flat panel speaker as claimed in claim 1, wherein: the upper end of the circular upper mounting seat is provided with a resonance shell covering the sound outlet hole, a resonance cavity is arranged in the resonance shell, and the outer wall of the resonance shell is provided with a sound outlet communicated with the resonance cavity.

3. A compact flat-panel speaker as claimed in claim 2, wherein: the resonance shell and the resonance cavity are both cam-shaped.

4. A small flat-panel speaker as claimed in claim 2, wherein: the sound outlet is smaller than the sound outlet hole.

5. A compact flat-panel speaker as claimed in claim 1, wherein: the circular lower mounting seat is annularly and uniformly distributed with a plurality of positioning columns around the lower sound cavity, the annular vibrating diaphragm seat is annularly and uniformly distributed with a plurality of first positioning holes, the circular upper mounting seat is annularly and uniformly distributed with a plurality of second positioning holes, and each first positioning hole and each second positioning hole are sequentially sleeved on one positioning column.

6. A compact flat-panel speaker as claimed in claim 1, wherein: and the size of one end of the lower sound cavity close to the vibrating diaphragm is increased to form a clearance groove, and the clearance groove is larger than or equal to the annular hole of the annular vibrating diaphragm seat.

7. A compact flat-panel speaker as claimed in claim 1, wherein: go up the sound intracavity and arrange and be equipped with many first magnet mounting grooves, many first magnet is installed respectively in many in the first magnet mounting groove.

8. A small flat panel speaker as claimed in claim 1, wherein: and a plurality of second magnet mounting grooves are arranged in the lower sound cavity, and the second magnets are respectively mounted in the second magnet mounting grooves.

9. A small flat panel speaker as claimed in claim 1, wherein: the diameters of the circular upper mounting seat, the annular diaphragm seat and the circular lower mounting seat are 10-15mm.

10. A compact flat-panel speaker as claimed in claim 1, wherein: the material of voice coil loudspeaker voice coil is aluminum product or copper product, just the voice coil loudspeaker voice coil is printed on the vibrating diaphragm.

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