WO2015090172A2

WO2015090172A2 - Loudspeaker

Info

Publication number: WO2015090172A2
Application number: PCT/CN2014/093851
Authority: WO
Inventors: 陈坚胜
Original assignee: 陈坚胜
Priority date: 2013-12-20
Filing date: 2014-12-15
Publication date: 2015-06-25
Also published as: WO2015090172A3; CN103702267A

Abstract

Provided is a loudspeaker, comprising a cone support, a magnetic circuit system installed on the cone support, a voice coil installed in the magnetic field of the magnetic circuit system, a cone connected to the voice coil, an elastic wave for fixedly connecting the voice coil and the cone, and an extension tube disposed on the back of the cone; one end of the extension tube is connected to the cone, and the other end is connected to the cone support. The loudspeaker has extension tubes disposed on the edge of the cone, thus having good elasticity, and allowing the cone to maintain good linear working characteristics in a large dynamic operation; in addition, the extension tubes are disposed on the back of the cone, without occupying the vibration area of the cone, thus greatly improving the low-frequency characteristics of the loudspeaker, and ensuring that the loudspeaker has working performance of high efficiency and high fidelity.

Description

a kind of speaker

技术领域 Technical field

The present invention relates to the field of audio equipment, and in particular to a speaker.

背景技术 Background technique

A horn is a transducer that converts an electrical signal into an acoustic signal. When different electron energies are transmitted to the coil, the coil generates an energy that interacts with the magnetic field of the magnet. This interaction causes the cone to vibrate. Because the electron energy changes at any time, the coil of the horn moves forward or backward, so the horn sound The basin will follow the movement, and these movements will change the density of the air to produce sound.

The existing horns, in order to make the cones move forward and backward, can also isolate the air on the front and back of the cone without causing an acoustic short circuit. Foam edges, rubber edges, or paper are added to the edges of the cone. The R side of the design such as the crease edge. The R side is flexible at the same time as the air is isolated. In general, the R side is made very thin or soft in order not to pin the piston movement of the paper tray. However, for a speaker with a large stroke, in order to achieve amplitude movement back and forth, R The width of the sides needs to be increased at the same time. For speakers of the same caliber, the area of the cone will be reduced, and even the area of the R side of the horn will be comparable to the area of the cone (eg: 8 inch speaker cone area is only 5 Inch). This greatly loses the effective vibration area and reduces the output of low frequency energy. Especially for small-caliber horns that want to produce better low-frequency energy, the loss of low-frequency energy is greater. In addition, when the horn is operating dynamically, due to The apparent dynamic loading of the R side causes nonlinear distortion in the movement of the cone piston.

发明内容 Summary of the invention

The object of the present invention is to overcome the defects of the prior art, and provide a horn having a hemming design of a telescopic tube, so that the cone has good linear working characteristics, and does not occupy the vibration area of the cone, thereby effectively improving the low frequency characteristics of the horn. .

To achieve the above object, the present invention provides a horn comprising a basin frame, a magnetic circuit system mounted on the basin frame, a voice coil mounted in a magnetic field of the magnetic circuit system, a sound cone connected to the voice coil, and a fixed connection A sound wave of the voice coil and the sound basin, and a telescopic tube disposed on the back of the sound tube, the telescopic tube is connected to the sound basin at one end and the basin frame at the other end.

The telescopic tube is a V-shaped bellows with better telescopic characteristics.

The telescopic tube is disposed on the outer circumference of the cone, and the drawing of the cone is small.

The magnetic circuit system includes T iron, and a magnet and a gasket stacked on the T iron in sequence; The iron includes a bottom plate and an iron post extending upward from a center of the bottom plate, the magnet being annular, the spacer being annular, and the iron post sequentially passing through the magnet and the spacer.

An annular magnetic gap is formed between the inner wall of the magnet, the inner wall of the gasket, and the outer wall of the iron column of the T iron.

The voice coil includes a cylindrical skeleton and a coil wound on the skeleton and located at a lower end of the skeleton, and the voice coil is sleeved on the T On the iron column of the iron, the coil of the voice coil projects into the magnetic gap.

The cone is funnel-shaped, and the edge of the large mouth is fixed to the basin frame by a telescopic tube, and the edge of the small opening is fixed at the upper end of the voice coil.

The elastic wave is a corrugated ring having an outer edge fixed to the basin frame and an inner edge fixed to an upper end of the voice coil.

Also included is a dust cap that is disposed at the center of the sound cone and above the voice coil for preventing dust and having a certain effect on high frequency response.

The outer periphery of the basin frame extends to form a crimp to limit the movement position of the cone, ensuring better up and down movement of the cone.

The invention has the beneficial effects that the horn of the invention has a telescopic tube at the edge of the cone, and has good flexibility, so that the cone can maintain good linear working characteristics during large dynamic operation, and the telescopic tube is disposed on the back of the cone. It does not occupy the vibration area of the cone, greatly improving the low frequency characteristics of the speaker, ensuring high efficiency and high fidelity performance of the speaker.

附图说明 DRAWINGS

1 is a cross-sectional structural view of a horn of the present invention;

2 is a perspective view showing the structure of a V-shaped bellows of the horn of the present invention.

具体实施方式 detailed description

The mechanism and working principle of the present invention will be described in detail below with reference to the accompanying drawings. In order to better illustrate the embodiments, some components of the drawings may be omitted, enlarged or reduced, and do not represent the dimensions of actual products; for those skilled in the art, some known structures and their descriptions may be omitted. Understandable. The same or similar reference numerals correspond to the same or similar parts.

Referring to Figure 1-2, the present invention provides a horn, including a basin frame 1 , mounted on the basin frame 1 The upper magnetic circuit system, the voice coil 2 installed in the magnetic field of the magnetic circuit system, the sound cone 3 connected to the voice coil 2, the elastic wave 4 for fixing the voice coil 2 and the sound tube 3, and the sound basin 3 telescopic tube on the back 5, the end of the telescopic tube 5 is connected to the sound cone 3, and the other end is connected to the basin frame 1 to isolate the air on the front and back sides of the cone 3. The telescopic tube 5 has the function of freely expanding and contracting in the axial direction to ensure the sound basin 3 Good linear operating characteristics in the axial direction.

The magnetic circuit system forms a gap magnetic field to drive the voice coil 2 to move, and the voice coil 2 drives the cone 3 Vibrate and make a sound. The magnetic circuit system includes a T iron 6 and a magnet 7 and a spacer 8 which are sequentially stacked on the T iron 6. The T iron 6 includes a bottom plate 61 and a bottom plate 61 An iron post 62 is formed extending upwardly from the center, the magnet 7 is annular, and the spacer 8 is annular, and the iron post 62 passes through the magnet 7 and the spacer 8 in sequence. Inner wall of the magnet 7, gasket An annular magnetic gap 786 is formed between the inner wall of 8 and the outer wall of the iron column 62 of the T iron 6. The voice coil 2 includes a cylindrical skeleton 21 and is wound around the skeleton 21 and located at the skeleton 21 a lower end coil 22, the voice coil 2 is sleeved on the iron column 62 of the T iron 6, and the coil 22 of the voice coil 2 extends into the magnetic gap 786 to the iron column 62. Providing an AC signal will cause the voice coil 2 to generate a pushing force in the axial direction, pushing the sound of the cone 3 to make a sound.

The cone 3 is substantially funnel-shaped, and the edge of the large mouth is fixed to the basin frame 1 through the telescopic tube 5, and the edge of the small opening is fixed to the voice coil 2 The upper end, that is, the skeleton 21 of the voice coil 2 is.

The elastic wave 4 is a corrugated ring having an outer edge fixed to the basin frame 1 and an inner edge fixed to the skeleton of the voice coil 2 Upper end. The elastic wave 4 limits the position of the voice coil 2 in the magnetic gap 786, ensuring that the voice coil 2 can vibrate vertically in the magnetic gap 786, that is, move up and down in the axial direction, and restrict the voice coil in the radial direction 2 The left and right movement makes the voice coil 2 not in contact with the spacer 8 and the T iron 6 to ensure the sound quality is stable.

The bellows 5 is disposed on the back of the cone 3 and is disposed on the outer periphery of the cone 3. On the one hand, it does not occupy the cone 3 The effective vibration area minimizes the loss of the low frequency energy of the cone 3, ensuring the low frequency characteristics of the cone 3; on the other hand, for the cone 3 The dynamic pull is made smaller, ensuring the sound quality and fidelity effect. Further, the telescopic tube 5 is a V-shaped bellows with better telescopic characteristics, ensuring good linear operation of the cone 3, especially the cone 3 When the big dynamic moves up and down, the effect is more obvious.

Further, the speaker further includes a dust cap 9 disposed at the center of the sound basin 3 and located in the voice coil 2 On the one hand, on the one hand, it prevents dust from entering the magnetic gap 786, and on the other hand, it has a certain effect on the high-frequency response of the horn.

In addition, the outer periphery of the basin frame 1 extends to form a bead 11 to limit the movement position of the cone 3, ensuring the cone 3 Better move up and down. The bead 11 can be made of a material such as paper or plastic. The basin frame 1 is further provided with a lead terminal (not shown) for electrically connecting the coil 22 of the voice coil 2 for connecting the power source to the coil 22 powered by. The lead terminal is provided on the outer side of the basin frame 1 for easy connection.

In summary, the horn of the present invention has a telescopic tube at the edge of the cone, which has good flexibility, so that the cone can maintain good linear working characteristics during large dynamic operation, and the telescopic tube is disposed on the back of the cone. It does not occupy the vibration area of the cone, greatly improving the low frequency characteristics of the speaker, ensuring high efficiency and high fidelity performance of the speaker.

It is apparent that the above-described embodiments of the present invention are merely illustrative of the present invention and are not intended to limit the embodiments of the present invention. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Any modifications, equivalent substitutions and improvements made within the spirit and scope of the invention are intended to be included within the scope of the appended claims.

Claims

A horn comprising a basin frame, a magnetic circuit system mounted on the basin frame, a voice coil installed in a magnetic field of the magnetic circuit system, a sound cone connected to the voice coil, and a fixed connection voice coil and sound The elastic wave of the basin and the telescopic tube on the back of the cone, the telescopic tube is connected to the cone at one end and the basin bracket at the other end.
The horn according to claim 1, wherein said bellows is a V-shaped bellows.
The horn according to claim 1, wherein said bellows is provided at an outer circumference of the cone.
The horn according to claim 1, wherein said magnetic circuit system comprises T iron, and magnets and spacers sequentially stacked on the T iron; The iron includes a bottom plate and an iron post extending upward from a center of the bottom plate, the magnet being annular, the spacer being annular, and the iron post sequentially passing through the magnet and the spacer.
The horn according to claim 4, wherein the inner wall of the magnet, the inner wall of the gasket, and the T An annular magnetic gap is formed between the outer walls of the iron pillars.
The horn according to claim 5, wherein the voice coil comprises a cylindrical skeleton and a coil wound on the skeleton and located at a lower end of the skeleton, the voice coil being sleeved on the On the iron column of the T iron, the coil of the voice coil projects into the magnetic gap.
Claims 1 The horn is characterized in that the cone is funnel-shaped, and the edge of the large mouth is fixed to the basin frame by a telescopic tube, and the edge of the small opening is fixed at the upper end of the voice coil.
Claims 1 The horn is characterized in that the elastic wave is a corrugated ring, the outer edge of which is fixed on the basin frame, and the inner edge is fixed at the upper end of the voice coil.
Claims 1 The horn is characterized in that it further comprises a dust cap which is disposed at the center of the sound cone and is located above the voice coil.
The horn of claim 1 wherein the outer periphery of the basin extends to form a crimp.