CN102104819A - Internal magnetic full-range speaker - Google Patents

Abstract

The invention discloses an internal magnetic full-frequency loudspeaker, which aims to solve the defect that the existing loudspeaker needs an external power supply and is inconvenient to use. The voice coil is arranged in a thin-wall circle shape, the voice coil, the washer and the magnet are sleeved in the voice coil from top to bottom, the voice coil is arranged in the center of the circle of the U iron, a horn-shaped drum paper is further arranged on the voice coil, a coil is wound on the lower half portion of the voice coil, the outer diameter of the washer is 13 mm, the distance between the outer diameter of the washer and the inner diameter of the U iron is 0.55-0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U iron is 0.11-0.19 mm. When seven products with different diameters are processed, the internal magnetic full-frequency loudspeaker can realize high-power audio playing without an external power supply by respectively selecting each group of corresponding parameters D, d1 and d2, thereby saving occupied volume and energy.

Description

Internal magnetic full-range speaker

technical field

The invention relates to a horn, in particular to a high-sensitivity internal magnetic full-frequency horn with an outer diameter of 30-70mm.

Background technique

The existing 30-70 mm external diameter internal magnetic full-range speaker requires a power supply to work after receiving an external signal, and the power supply includes external power supplies such as DC power supplies, dry batteries, or built-in power supplies.

Due to the existence of the power supply, the loudspeaker has defects such as a large volume. At the same time, the power consumption of the power supply is large, which does not meet the new era concept of energy saving, emission reduction and low-carbon environmental protection.

Contents of the invention

The object of the present invention is to disclose an internal magnetic full-range speaker to solve the defect that the existing speaker requires an external power supply and is inconvenient to use.

The internal magnetic full-range speaker of the present invention includes: a basin frame, a magnet, a washer, a sound basin and a voice coil. The magnet, washer, and sound cone are all adapted up and down, and they are all set in the shape of a round cake. The voice coil is set in a thin-walled circle. The sound cone, washer, and magnet are set in the voice coil from top to bottom. In the center of the circle, there is also a trumpet-shaped drum paper on the voice coil. The drum paper is fixed to the voice coil through a ring-shaped wave plate, and a coil is wound around the lower half of the voice coil. The outer diameter of the washer is 13 The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.55 to 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.11 to 0.19 mm.

Wherein, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.675 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.115 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.69 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.14 mm; or,

The distance between the outer diameter of the Washer and the inner diameter of the U-iron is 0.725 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.16 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.185 mm.

The internal magnetic full-range speaker of the present invention includes: a basin frame, a magnet, a washer, a sound basin and a voice coil. The magnet, washer, and sound cone are all adapted up and down, and they are all set in the shape of a round cake. The voice coil is set in a thin-walled circle. The sound cone, washer, and magnet are set in the voice coil from top to bottom. In the center of the circle, there is also a trumpet-shaped drum paper on the voice coil. The drum paper is fixed to the voice coil through a ring-shaped wave plate, and a coil is wound around the lower half of the voice coil. The outer diameter of the washer is 14 The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.70 to 0.85 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.12 to 0.22 mm.

Wherein, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.725 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.145 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.16 mm; or,

The distance between the outer diameter of the Washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.195 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.215 mm.

The internal magnetic full-range speaker of the present invention includes: a basin frame, a magnet, a washer, a sound basin and a voice coil. The magnet, washer, and sound cone are all adapted up and down, and they are all set in the shape of a round cake. The voice coil is set in a thin-walled circle. The sound cone, washer, and magnet are set in the voice coil from top to bottom. In the center of the circle, there is also a trumpet-shaped drum paper on the voice coil. The drum paper is fixed to the voice coil through a ring-shaped wave plate, and a coil is wound around the lower half of the voice coil. The outer diameter of the washer is 15 The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.70 to 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.13 to 0.25 mm.

Wherein, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.185 mm; or,

The distance between the outer diameter of the Washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.205 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.23 mm; or,

The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm.

The internal magnetic full-range speaker of the present invention includes: a basin frame, a magnet, a washer, a sound basin and a voice coil. The magnet, washer, and sound cone are all adapted up and down, and they are all set in the shape of a round cake. The voice coil is set in a thin-walled circle. The sound cone, washer, and magnet are set in the voice coil from top to bottom. In the center of the circle, there is also a trumpet-shaped drum paper on the voice coil. The drum paper is fixed to the voice coil through a ring-shaped wave plate, and a coil is wound around the lower half of the voice coil. Among them:

The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 to 0.95 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135 to 0.25 mm; or,

The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U iron is 0.80 to 1.00 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U iron is 0.135 to 0.30 mm.

Wherein, the outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135 mm; or,

The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or,

The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.20 mm; or,

The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm; or,

The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135 mm; or,

The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or,

The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.20 mm; or,

The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm.

The internal magnetic full-range speaker of the present invention includes: a basin frame, a magnet, a washer, a sound basin and a voice coil. The magnet, washer, and sound cone are all adapted up and down, and they are all set in the shape of a round cake. The voice coil is set in a thin-walled circle. The sound cone, washer, and magnet are set in the voice coil from top to bottom. In the center of the circle, there is also a trumpet-shaped drum paper on the voice coil. The drum paper is fixed to the voice coil through a ring-shaped wave plate, and a coil is wound around the lower half of the voice coil. Among them:

The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 to 1.05 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.15 to 0.32 mm; or,

The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U iron is 1.00 to 1.14 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U iron is 0.23 to 0.36 mm.

Wherein, the outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or,

The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.165 mm; or,

The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.925 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.215 mm; or,

The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.94 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.255 mm; or,

The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.05 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.23 mm; or,

The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.07 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm; or,

The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.10 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.28 mm; or,

The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.14 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.30 mm.

The internal magnetic full-range speaker of the present invention, when processing seven kinds of products with different diameters, as long as each group of corresponding parameters D, d1, and d2 are selected respectively, high-power audio playback can be realized without an external power supply , which saves the occupied volume and saves energy at the same time.

Description of drawings

Fig. 1 is a schematic diagram of the exploded structure of the internal magnetic type full-frequency horn of the present invention;

Fig. 2 is the top view of the internal magnetic type full-range horn of the present invention;

Fig. 3 is A-A to the first sectional view of Fig. 2;

Fig. 4 is A-A of Fig. 2 to the second sectional view (drum paper not shown);

Fig. 5 is a third sectional view taken along line A-A of Fig. 2 (the drum paper is not shown).

In conjunction with the accompanying drawings, the following reference numerals are marked thereon:

1-Basin frame, 2-Magnet, 3-Washer, 4-Sound cone, 5-Spontaneous wave plate, 6-Voice coil, 7-Drum paper, 8-Blanking, 9-Dust cap, 10-Terminal board , 11-U iron, 12-coil.

Detailed ways

A specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

As shown in Figures 1 to 5, the internal magnetic full-frequency speaker of the present invention includes: a basin frame 1, a magnet 2, a washer 3, a sound basin 4 and a voice coil 6, and the basin frame 1 is arranged in a round basin shape, and the basin frame 1 A circle-shaped U-iron 11 is arranged on the edge of the inner surface of the inner surface. The magnet 2, the washer 3, and the sound cone 4 are adapted up and down, and they are all arranged in a round cake shape. The voice coil 6 is set in a thin-walled circle. The sound cone 4, washer 3 and the magnet 2 are set in the voice coil 6 from top to bottom, and the voice coil 6 is set in the center of the circle of the U iron 11, and a trumpet-shaped drum paper 7 is also arranged on the voice coil 6, and the drum paper 7 passes through the ring-shaped The elastic wave plate 5, the blank holder 8 and the voice coil 6 are fixed, and a coil 12 is wound around the lower half of the voice coil 6, and a dustproof cap 9 is also provided on the drum paper 7, and the coil 12 is connected to the external audio signal through the terminal board 10. connected.

The full-frequency speaker of this application adopts high-performance double NdFeB to form positive and negative polarity magnetic circuits, and the performance parameters are N45-N52, which will greatly improve the sensitivity of the speaker.

In the full-frequency speaker of the present application, the drum paper is made of full paper material, or the paper carcass is connected by foam edge, PU (polyurethane) edge or cloth edge, or by Mylar (Mylar, a kind of tough polyester polymer) , PEI (polyetherimide), PI (polyimide), PMI foam (polymethacrylic imide) or PEN (polyethylene naphthalate) and other materials.

In the full-range loudspeaker of the present application, the voice coil 6 uses materials such as paper, asbestos paper, etc. as the voice coil skeleton (BOBBIN).

In the full-frequency speaker of the present application, the wave plate 5 is made of silk or TN-57 material or is spun by electric power, and the glass pattern is obvious.

For the full-range speaker of the present application, the dustproof cap 9 is made of Mylar (Mylar), PEI (polyetherimide), PI (polyimide), PEN (polyethylene naphthalate), and the thickness ^0.075-0.125t .

As shown in Figures 4 and 5, the outer diameter of the washer 3 (that is, the diameter of the horn) is defined as D (the unit is mm, commonly known as "core"), and the distance between the outer diameter of the washer 3 and the inner diameter of the U iron 11 is defined as d1 (i.e. the magnetic gap, the unit is mm), and the distance between the outer surface of the coil 12 on the voice coil 6 and the inner diameter of the U iron 11 is d2 (i.e. the air gap, the unit is mm):

(1) When D=13mm (13 cores), d1=0.55-0.74mm, d2=0.11-0.19mm, preferably: d1=0.675mm d2=0.115mm or d1=0.69mm d2=0.14mm or d1= 0.725mm d2=0.16mm or d1=0.74mm d2=0.185mm;

(2) When D=14mm (14 cores), d1=0.70-0.85mm, d2=0.12-0.22mm, preferably: d1=0.725mm d2=0.145mm or d 1=0.74mm d2=0.16mm or d1 ＝0.825mm d2＝0.195mm or d1＝0.84mm d2＝0.215mm;

(3) When D=15mm (15 cores), d1=0.70-0.86mm, d2=0.13-0.25mm, preferably: d1=0.74mm d2=0.185mm or d1=0.825mm d2=0.205mm or d1= 0.84mm d2=0.23mm or d1=0.86mm d2=0.25mm;

(4) When D=16mm (16 cores), d1=0.80-0.95mm, d2=0.135-0.25mm, preferably: d1=0.80mm d2=0.135mm or d1=0.825mm d2=0.155mm or d1= 0.84mm d2=0.20mm or d1=0.86mm d2=0.25mm;

(5) When D=19mm (19 cores), d1=0.80-1.00mm, d2=0.135-0.30mm, preferably: d1=0.80mm d2=0.135mm or d1=0.825mm d2=0.155mm or d1= 0.84mm d2=0.20mm or d1=0.86mm d2=0.25mm;

(6) When D=20mm (20 cores), d1=0.80-1.05mm, d2=0.15-0.32mm, preferably: d1=0.825mm d2=0.155mm or d1=0.84mm d2=0.165mm or d1= 0.925mm d2=0.215mm or d1=0.94mm d2=0.255mm;

(7) When D=25mm (25 cores), d1=1.00-1.14mm, d2=0.23-0.36mm, preferably: d1=1.05mm d2=0.23mm or d1=1.07mm d2=0.25mm or d1= 1.10mm d2=0.28mm or d1=1.14mm d2=0.30mm;

For the internal magnetic full-range speaker of the present application, when processing the above-mentioned seven kinds of products with different diameters, as long as each group of corresponding parameters D, d1, and d2 are selected respectively, high-power audio frequency can be realized without an external power supply. Playing, saving the occupied volume, saving energy at the same time.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (10)

1. A kind of internal magnetic type full-frequency loudspeaker, it is characterized in that, comprises: basin frame, magnet, washer, sound basin and voice coil, described basin frame is the setting of round basin shape, and the inner surface edge of described basin frame is set There is a circle-shaped U-iron, the magnets, washers, and sound cones are arranged up and down in the shape of a round cake, the voice coil is set in a thin-walled circle, and the sound cone, washers, and magnets are arranged from top to bottom The lower sleeve is placed in the voice coil, and the voice coil is set in the center of the circle of the U iron. There is also a trumpet-shaped drum paper on the voice coil, and the drum paper passes through the ring-shaped elastic plate. Fixed with the voice coil, a coil is wound on the lower half of the voice coil, the outer diameter of the washer is 13 mm, and the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.55 to 0.74 mm, so The distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.11 to 0.19 millimeters. 2. The internal magnetic full-range speaker according to claim 1, wherein: The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.675 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.115 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.69 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.14 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.725 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.16 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.185 mm. 3. A kind of internal magnetic type full-frequency loudspeaker, it is characterized in that, comprises: pot frame, magnet, washer, sound basin and voice coil, described pot frame is set in the shape of a round pot, and the inner surface edge of described pot frame is set There is a circle-shaped U-iron, the magnets, washers, and sound cones are arranged up and down in the shape of a round cake, the voice coil is set in a thin-walled circle, and the sound cone, washers, and magnets are arranged from top to bottom The lower sleeve is placed in the voice coil, and the voice coil is set in the center of the circle of the U iron. There is also a trumpet-shaped drum paper on the voice coil, and the drum paper passes through the ring-shaped elastic plate. Fixed with the voice coil, a coil is wound on the lower half of the voice coil, the outer diameter of the washer is 14 mm, and the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.70 to 0.85 mm, so The distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.12 to 0.22 millimeters. 4. The internal magnetic full-range speaker according to claim 3, wherein: The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.725 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.145 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.16 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.195 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.215 mm. 5. A kind of internal magnetic type full-frequency loudspeaker, it is characterized in that, comprises: pot frame, magnet, washer, sound basin and voice coil, described pot frame is set in the shape of a round pot, and the inner surface edge of described pot frame is set There is a circle-shaped U-iron, the magnets, washers, and sound cones are arranged up and down in the shape of a round cake, the voice coil is set in a thin-walled circle, and the sound cone, washers, and magnets are arranged from top to bottom The lower sleeve is placed in the voice coil, and the voice coil is set in the center of the circle of the U iron. There is also a trumpet-shaped drum paper on the voice coil, and the drum paper passes through the ring-shaped elastic plate. Fixed with the voice coil, a coil is wound on the lower half of the voice coil, the outer diameter of the washer is 15 mm, and the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.70 to 0.86 mm, so The distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.13 to 0.25 millimeters. 6. The internal magnetic full-range horn according to claim 5, wherein: The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.74 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.185 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.205 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.23 mm; or, The distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm. 7. An internal magnetic full-range speaker, characterized in that it comprises: a pot frame, a magnet, a washer, a sound basin and a voice coil, the pot frame is arranged in a round pot shape, and the edge of the inner surface of the pot frame is set There is a circle-shaped U-iron, the magnets, washers, and sound cones are arranged up and down in the shape of a round cake, the voice coil is set in a thin-walled circle, and the sound cone, washers, and magnets are arranged from top to bottom The lower sleeve is placed in the voice coil, and the voice coil is set in the center of the circle of the U iron. There is also a trumpet-shaped drum paper on the voice coil, and the drum paper passes through the ring-shaped elastic plate. Fixed with the voice coil, a coil is wound around the lower half of the voice coil, wherein: The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 to 0.95 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135mm to 0.25 mm; or, The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 to 1.00 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135mm to 0.30 mm. 8. The internal magnetic full-range speaker according to claim 7, wherein: The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135 mm; or, The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or, The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.20 mm; or, The outer diameter of the washer is 16 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm; or, The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.135 mm; or, The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or, The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.20 mm; or, The outer diameter of the washer is 19 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.86 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm. 9. An internal magnetic full-range loudspeaker, characterized in that it comprises: a pot frame, a magnet, a washer, a sound basin and a voice coil, the pot frame is arranged in a round pot shape, and the edge of the inner surface of the pot frame is set There is a circle-shaped U-iron, the magnets, washers, and sound cones are arranged up and down in the shape of a round cake, the voice coil is set in a thin-walled circle, and the sound cone, washers, and magnets are arranged from top to bottom The lower sleeve is placed in the voice coil, and the voice coil is set in the center of the circle of the U iron. There is also a trumpet-shaped drum paper on the voice coil, and the drum paper passes through the ring-shaped elastic plate. Fixed with the voice coil, a coil is wound around the lower half of the voice coil, wherein: The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.80 to 1.05 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.15 mm. to 0.32 mm; or, The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.00 to 1.14 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.23 mm to 0.36mm. 10. The internal magnetic full-range horn according to claim 9, wherein: The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.825 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.155 mm; or, The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.84 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.165 mm; or, The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.925 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.215 mm; or, The outer diameter of the washer is 20 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 0.94 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.255 mm; or, The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.05 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.23 mm; or, The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.07 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.25 mm; or, The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.10 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.28 mm; or, The outer diameter of the washer is 25 mm, the distance between the outer diameter of the washer and the inner diameter of the U-iron is 1.14 mm, and the distance between the outer surface of the coil on the voice coil and the inner diameter of the U-iron is 0.30 mm.

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