Moving-Coil Speaker

Abstract

A moving-coil speaker includes: a magnetic path unit (1); an annular frame (3) connected to exterior of the magnetic path unit (1) and used to carry a membrane (2); and a PCB (4) installed on the frame (3) and used to solder thereon a component or provide electrical conduction. An outer perimeter of the frame (3) is 45 mm. A positioning pin (5) is disposed at a front side of the frame (3) and overlapping with a central axle extension line of the PCB (4). Two sets of air vents (6) are provided on the frame on two sides of the positioning pin (5). A tune paper (7) is pasted on the surface of the frame (3) on the two sides of the positioning pin (5). A distance between the positioning pin (5) and the center of a first air vent at the starting place of each set of air vents (6) is equivalent to a distance between a side of the PCB (4) and the center of a second air vent at the last place of each set of air vents (6). The 45 mm speaker is a balance between a 40 mm speaker and a 50 mm speaker, and can meet requirements with respect to structures and appearances for this type of earphones.

Claims

1. A moving-coil speaker, comprising a magnetic circuit unit and a toroidal support, connected to an exterior of the magnetic circuit unit, arranged to carry a diaphragm, the support being provided with a Printed Circuit Board (PCB) for soldering a wire thereon and performing current conduction, wherein the support has an outer diameter of 45 mm and has a positioning bone, arranged on a front surface of the support, which coincides with an extending line of a middle axis of the PCB, two groups of air holes are provided symmetrically on the support on both sides of the positioning bone, a tuning paper is attached on a surface of the support on each side of the positioning bone, and a distance between a first air hole of each group of air holes and the positioning bone is equal to a distance between a second air hole of said each group of air holes and a side edge of the PCB, the first air hole and the second air hole being located in a first place and a last place among said each group of air holes.

2. The moving-coil speaker according to claim 1, wherein each of the first and second air holes is in the shape of a circle, and a connection line from a center of the first air hole to a center of the support forms an included angle of 20 degree with an extending line of the positioning bone.

3. The moving-coil speaker according to claim 1, wherein the diaphragm comprises a dome portion and an outer arc portion connected with an outer edge of the dome portion, there being at least 55 ribs disposed with uniform intervals on a surface of the outer arc portion.

4. The moving-coil speaker according to claim 3, wherein the diaphragm comprises a metallic coating layer coated at least on a surface of the dome portion.

5. The moving-coil speaker according to claim 1, wherein the diaphragm is made of a PAR material layer, a PU material layer and a PEEK material layer having a same shape.

6. The moving-coil speaker according to claim 1, wherein the diaphragm is made of PET material.

7. The moving-coil speaker according to claim 1, wherein the diaphragm is made of PEN material.

8. The moving-coil speaker according to claim 1, wherein the diaphragm is made of PEI material.

9. The moving-coil speaker according to claim 1, wherein the diaphragm is made of PEEK material.

10. The moving-coil speaker according to claim 2, wherein the diaphragm is made of a PAR material layer, a PU material layer and a PEEK material layer having a same shape.

11. The moving-coil speaker according to claim 2, wherein the diaphragm is made of PET material.

12. The moving-coil speaker according to claim 2, wherein the diaphragm is made of PEN material.

13. The moving-coil speaker according to claim 2, wherein the diaphragm is made of PEI material.

14. The moving-coil speaker according to claim 2, wherein the diaphragm is made of PEEK material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The moving-coil speaker according to embodiments of the disclosure is elaborated below with reference to drawings.

[0018] FIG. 1 is a schematic structural diagram of a moving-coil speaker according to an embodiment of the disclosure;

[0019] FIG. 2 is a schematic structural diagram of a conventional support;

[0020] FIG. 3 is a schematic structural diagram of a support according to an embodiment of the disclosure; and

[0021] FIG. 4 is a schematic diagram of a diaphragm having a metallic coating layer sprayed on a surface of the diaphragm according to an embodiment of the disclosure.

DETAILED DESCRIPTION

Embodiments

[0022] As shown in FIG. 1, a moving-coil speaker according to an embodiment of the disclosure includes: a magnetic circuit unit 1, and a toroidal support 3, connected to an exterior of the magnetic circuit unit 1, for carrying a diaphragm 2.

[0023] The support 3 is provided with a Printed Circuit Board (PCB) 4 for soldering a wire thereon and performing current conduction, and the support 3 has an outer diameter of 45 mm.

[0024] As shown in FIG. 3, the support 3 has a positioning bone 5, arranged on a front surface of the support 3, which coincides with an extending line of a middle axis of the PCB 4, two groups of air holes 6 are provided symmetrically on the support 3 on both sides of the positioning bone 5, a tuning paper 7 is attached on a surface of the support 3 on each side of the positioning bone 5, and a distance between a first air hole of each group of air holes 6 and the positioning bone 5 is equal to a distance between a second air hole of said each group of air holes 6 and a side edge of the PCB 4, herein the first air hole and the second air hole is located in a first place and a last place among said each group of air holes 6.

[0025] Each of the first and second air holes is in the shape of a circle, and a connection line from a center of the first air hole to a center of the support 3 forms an included angle of 20 degree with an extending line of the positioning bone 5; and a connection line from a center of the second air hole to the center of the support 3 forms an included angle of 20 degree with an extending line of the side edge of the PCB 4. Certainly, the air holes may also have other shapes, such as rectangle, hexagon or the like.

[0026] As shown in FIG. 4, the diaphragm 2 includes a dome portion and an outer arc portion connected with an outer edge of the dome portion, and there are at least 55 ribs 8 disposed with uniform intervals on a surface of the outer arc portion. The diaphragm 2 has a metallic coating layer coated on a surface of the dome portion and on a partial surface of the outer arc portion. For tuning voice, position and area of the metallic coating layer may change arbitrarily.

[0027] In an embodiment, the diaphragm 2 is made of a PAR material layer, a PU material layer and a PEEK material layer having a same shape.

[0028] In an embodiment, the diaphragm 2 is made of PET material.

[0029] In an embodiment, the diaphragm 2 is made of PEN material.

[0030] In an embodiment, the diaphragm 2 is made of PEI material.

[0031] In an embodiment, the diaphragm 2 is made of PEEK material.

[0032] The disclosure is not limited to the above embodiments. Technical solutions according to above embodiments can be combined to obtain new technical solutions. In addition, all equivalents of the technical solutions of the disclosure fall within the scope of the claims.