WO2016150179A1

WO2016150179A1 - Loudspeaker

Info

Publication number: WO2016150179A1
Application number: PCT/CN2015/095353
Authority: WO
Inventors: 焦其金; 李志�; 杨健斌
Original assignee: 歌尔声学股份有限公司
Priority date: 2015-03-23
Filing date: 2015-11-24
Publication date: 2016-09-29
Also published as: CN104754477A

Abstract

Disclosed in the present invention is a loudspeaker. The loudspeaker comprises a housing, and a resonance system and a magnetic circuit system accommodated in the housing. The resonance system comprises a surround, a sound cone, a coil frame and a damper. The sound cone is an arch-shaped mechanism, the surround is fixed with an outer edge of the sound cone, and a downward extension portion is disposed on the outer edge position at which the sound cone is fixed with the surround. The damper has a ring structure, an outer side of the damper having the ring structure is fixed with the housing, and an inner side of the damper having the ring structure is fixed with a lower end of the extension portion. The damper of the loudspeaker in the present invention is provided on an outer side of the sound cone and does not occupy a resonance space of the sound cone, thereby, effectively increasing the resonance space and enhancing product performance, while reducing a height of the loudspeaker and realizing a slim design for the loudspeaker. The loudspeaker of the present invention has advantages of favorable acoustic performance and a slim design.

Description

speaker

Technical field

The invention relates to the field of electroacoustics, in particular to a speaker device with good acoustic performance and thin design.

Background technique

With the improvement of living standards, people are more and more capable of pursuing high-quality life. At the same time, with various pressures, individuals have different ways to adjust, and listening to music is one. Music can soothe people's nervous mood with its beautiful melody, so it has been widely welcomed by everyone, and the speaker as an electro-acoustic conversion component has also received more and more attention. With the development of electronic technology, the thin design of electronic devices has become more and more popular, and the thinner and smaller designs of speakers have attracted more and more attention from the industry.

The prior art speaker comprises a casing, a vibration system and a magnetic circuit system housed in the casing, the vibration system comprises a cone, a ring and a elastic wave, the elastic wave is a ring structure, the inner side of the ring structure and the inner side of the cone or The voice coil skeleton is fixed, and the speaker of the structure occupies the vibration space of the sound basin, which increases the height of the vibration system, and is not conducive to the thin design of the speaker.

Therefore, it is necessary to propose an improvement to overcome the drawbacks of prior art speakers.

Summary of the invention

The technical problem to be solved by the present invention is to provide a speaker device with good acoustic performance and thin design.

In order to achieve the above object, the present invention adopts the following technical solutions:

A speaker includes a housing in which a vibration system and a magnetic circuit system are housed, the vibration system including a folding ring, a sound cone, a skeleton voice coil, and an elastic wave, and the sound basin is an arch structure. The folding ring is fixed to an outer edge of the cone, and the cone and the folding ring are fixed a predetermined outer edge position is provided with a downward extending portion; the elastic wave is an annular structure, the outer side of the elastic wave of the annular structure is fixed to the outer casing, and the inner side of the elastic wave of the annular structure is fixed to the lower end of the extending portion .

As a preferred technical solution, a metal bracket is further included, and the metal bracket connects the magnetic circuit system and the outer casing.

In still another preferred embodiment, the metal bracket is provided with a recess avoidance corresponding to the extending portion and the elastic wave.

As a further preferred solution, the outer side of the annular elastic wave is disposed between the outer casing and the metal bracket.

In another further preferred embodiment, the magnetic circuit system includes U-iron, and the metal bracket is connected to the U-iron; the U-iron and the metal bracket are connected to each other at a connection plane. Preferably, the magnetic circuit system further includes a magnet fixed to a central position of the U-iron, and a protrusion is disposed inside the U-iron corresponding to the fixed position of the magnet.

As a preferred technical solution, one end of the folding ring away from the sound basin is fixed to the outer casing, and the outer casing is provided with a fixed step corresponding to the folding ring.

As a preferred technical solution, the vibration system further includes a dome, the dome is disposed at a top center position of the arched cone; and the center position of the cone corresponds to the dome to set a limiting step.

Further preferably, the limiting step position of the arched cone is provided with a connection extension, the skeleton voice coil is fixedly coupled with the connection extension; the skeleton voice coil comprises a voice coil lead, and the sound cone is arranged There is a slit corresponding to the voice coil lead, and the voice coil lead is led out to the outside of the cone according to the sound basin slit.

As a preferred technical solution, the magnetic circuit system includes a magnet and a washer, and the washer is fixedly provided with a short-circuit ring; the washer has a relief structure corresponding to the short-circuit ring, and the short-circuit ring is fixed at the The inside of the evasive structure is two; the short-circuiting ring is two, and the two short-circuiting rings are respectively disposed at two ends of the huasi.

In the speaker of the present invention, the outer edge of the cone and the fixed ring of the folding ring is provided with a downward extending portion, and the lower end of the extending portion is fixed to the inner side of the annular elastic wave, and the outer side of the annular elastic wave is fixed to the outer casing, and the elastic wave is fixed to the outer side of the sound basin. It does not occupy the vibration space of the cone, which is beneficial to increase the vibration space of the vibration system and improve the performance of the product. At the same time, it is beneficial to reduce the height of the speaker and realize the thin design of the speaker.

DRAWINGS

Figure 1 is an exploded view of a specific embodiment of the present invention;

Figure 2 is a cross-sectional view of the speaker shown in Figure 1;

Figure 3 is an enlarged view of a portion I of Figure 2;

Figure 4 is an enlarged view of a portion II of Figure 2;

Figure 5 is an enlarged view of a portion III of Figure 2;

Figure 6 is an enlarged view of a portion IV of Figure 2.

detailed description

The content of the present invention will be described in detail below with reference to the accompanying drawings:

As shown in FIGS. 1 and 2, the speaker of the present embodiment includes a housing 3, a vibration system and a magnetic circuit system housed in the housing 3. The vibrating system includes a folding ring 12 fixed to the upper end surface of the outer casing 3. The inner side of the folding ring 12 is fixed with a sound cone 13, and the folding ring 12 is fixed to the outer edge of the sound tube 13. The center of the sound tube 13 is fixed with a dome 11 on the cone 13 A skeleton voice coil 14 is also fixed; a magnetic circuit system is provided with a magnetic gap, a skeleton voice coil 14 is disposed in the magnetic gap, and the skeleton voice coil 14 is electrically connected to the electrical connector 5. When the speaker is working, the external electrical signal enters the skeleton voice coil 14 through the electrical connector 5, and the current change of the skeleton voice coil 14 disposed in the magnetic field causes the skeleton voice coil 14 to vibrate up and down by the Lorentz force, and drives the cone 13 The dome 11 and the ring 12 vibrate and the speaker sounds.

As shown in FIG. 1 and FIG. 2, the speaker of the present invention further includes a bomb wave 15, the elastic wave 15 is a ring structure; the sound basin 13 is an arch structure, and the sound basin 13 of the arch structure is fixed to the folding ring 12. The outer edge position is provided with a downward extending portion, and the outer side of the elastic wave 15 of the annular structure is fixed to the outer casing 3, and the inner side is fixed to the extending portion of the sound cone 13. The elastic wave 15 of the speaker of the present invention is disposed outside the sound basin 13 and does not occupy the vibration space, which is advantageous for reducing the height of the speaker and achieving a thin design of the speaker.

In the speaker of the embodiment, as shown in FIG. 6, the dome 11 is disposed at the center of the top of the cone 13 of the arch structure, and the cone 13 is provided with a finite step 131 corresponding to the dome 11, and the limiting step 131 can position the dome 11, to ensure the firmness of the combination of the dome 11 and the cone 13. As shown in FIG. 6, the limit step position of the cone 13 is provided with a connection extension 132, and the skeleton voice coil 14 is fixedly coupled with the connection extension 132 of the cone 13, and the connection extension 132 can improve the connection of the skeleton voice coil 14 to the cone 13. To the extent that there is no need to set up connectors, simplify the production process and reduce production costs. As shown in FIG. 1, the sound basin 13 is provided with a slit 13a, and the slit 13a is disposed corresponding to the voice coil lead of the skeleton voice coil 14. The voice coil lead of the skeleton voice coil 14 can directly extend from the slit 13a to the outside of the sound basin and the electrical connector. 5 combination, it is not necessary to use the traditional structure to punch holes in the cone 13 and the voice coil lead through the hole in the sound basin hole, which effectively improves the production efficiency of the speaker and is beneficial to the automatic production of the speaker.

As shown in FIGS. 1 and 2, the speaker of this embodiment further includes a metal bracket 4 that connects the outer casing 3 and the magnetic circuit system. As shown in FIG. 3, the outer side of the elastic wave 15 is disposed between the outer casing 3 and the metal bracket 4, which can improve the fixation of the elastic wave 15 and improve the reliability of the speaker.

As shown in FIG. 2, the metal bracket 4 is provided with a recess avoidance 4a corresponding to the extending portion of the cone 13 and the elastic wave 15, and the recess avoidance 4a increases the vibration space of the cone 13 to avoid the extension of the cone 13 and the metal bracket 4 The rubbing is generated to generate noise, which increases the vibration space of the vibration system and improves the acoustic performance of the speaker.

As shown in FIG. 1 and FIG. 2, in the speaker of the embodiment, the magnetic circuit system includes a U-iron 25 and a magnet and a washer fixed in a central position of the U-iron 25. The magnet includes a first magnet 21 and a second magnet 22, A washer 23 is fixed between a magnet 21 and the second magnet 22. The center position of the second magnet 22 and the U-iron 25 is fixed, and the fixed structure and the U of the magnet and the washer are fixed. A magnetic gap is provided between the side walls of the iron 25. The metal bracket 4 is connected to the U-iron 25 and the outer casing 3. As shown in FIG. 4, the U-iron 25 and the metal bracket 4 are fixedly disposed with a connecting plane 25a, and the connecting plane 25a can increase the firmness of the fixing of the U-iron 25 and the metal bracket 4. Improve speaker reliability.

As shown in FIG. 2, the center position of the U-iron 25 fixed second magnet 22 is provided with a projection 25b which can increase the vibration space, thereby improving the acoustic performance of the speaker.

As shown in FIG. 1 and FIG. 2, the speaker of the embodiment further includes a short-circuit ring, and the short-circuit ring is fixed to the washer 23, and the short-circuit ring of the washer 23 is provided with a avoidance structure, and the short-circuit ring is disposed in the avoidance structure of the washer 23 Therefore, the short-circuit ring does not occupy the internal space of the speaker, and the internal space utilization of the speaker is improved, which is advantageous for the thin design of the product. The shorting ring includes a first shorting ring 24a and a second shorting ring 24b. The first shorting ring 24a and the second shorting ring 24b are respectively disposed at upper and lower ends of the washer 23. The shorting ring can counteract the influence of the voice coil induced current on the magnetic field inside the speaker and improve the acoustic performance of the speaker.

As shown in FIG. 2 and FIG. 5, in the speaker of the embodiment, the folding ring 12 is fixed to the outer casing 3, and the outer casing 3 is provided with a fixing step 3a corresponding to the fixing position of the folding ring 12, the thickness of the folding ring 12 and the outer casing 3 fixed position and the fixed step 3a. The upper surface of the fixed position of the folding ring 12 is flush with the surface of the outer casing 3. In the speaker of the invention, the annular elastic wave is disposed on the outer side of the sound basin, and does not occupy the vibration space of the sound basin, so that the vibration space can be effectively increased to improve the performance of the product, and at the same time, the height of the speaker is reduced, and the thin design of the speaker is realized.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and equivalent modifications or variations made by those skilled in the art in light of the present invention are included in the scope of the claims.

Claims

A speaker includes a casing in which a vibration system and a magnetic circuit system are housed, the vibration system including a folding ring, a cone, a skeleton voice coil and an elastic wave, wherein the cone is an arch structure The folding ring is fixed to an outer edge of the cone, and the outer edge of the cone and the folding ring is provided with a downward extending portion; the elastic wave is an annular structure, and the annular structure is The outer side of the elastic wave is fixed to the outer casing, and the inner side of the elastic wave of the annular structure is fixed to the lower end of the extending portion.
The speaker of claim 1 further comprising a metal bracket connecting said magnetic circuit system to said outer casing.
The speaker according to claim 2, wherein the metal bracket is provided with a recess avoidance corresponding to the extending portion and the elastic wave.
The speaker according to claim 2, wherein said annular elastic wave is disposed outside said outer casing and said metal bracket.
The speaker according to claim 2, wherein the magnetic circuit system comprises U-iron, and the metal bracket is connected to the U-iron; and the connection position of the U-iron and the metal bracket is provided with a connection plane.
The speaker according to claim 5, wherein the magnetic circuit system further comprises a magnet, the magnet is fixed to a central position of the U-iron, and the inside of the U-iron is provided with a protrusion corresponding to the fixed position of the magnet. .
The speaker according to claim 1, wherein one end of the folding ring away from the sound basin is fixed to the outer casing, and the outer casing is provided with a fixed step corresponding to the folding ring.
The speaker according to claim 1, wherein said vibration system further comprises a dome, said dome being disposed at a top center position of said arched cone; said cone center position corresponding to said dome Set the limit step.
The speaker according to claim 8, wherein the position of the limiting step of the arched cone is provided with a connection extension, and the skeleton voice coil is fixedly coupled with the connection; the skeleton voice coil comprises a voice coil a lead wire on which the voice coil lead is disposed Corresponding slits, the voice coil leads are led out to the outside of the cone according to the cone gap.
The speaker according to claim 1, wherein the magnetic circuit system comprises a magnet and a washer, the washer is fixedly provided with a short-circuit ring; and the washer is provided with a avoidance structure corresponding to the short-circuit ring, The short-circuiting ring is fixed in the evasive structure; the short-circuiting ring is two, and the two short-circuiting rings are respectively disposed at two ends of the huasi.