TWM660472U - Speaker unit with a diaphragm having an opening - Google Patents

Abstract

The invention relates to a speaker unit with a diaphragm having an opening, comprising: a magnetic loop structure having a magnetic bowl, a magnet and a magnetic conductive plate, wherein the magnet and the magnetic conductive plate are stacked in the magnetic bowl to form a magnetic gap; a bracket coupled to the top of the magnetic bowl; a diaphragm consisting of a central portion and an annular portion surrounding the central portion, wherein the central portion has an opening structure, and the outer periphery of the annular portion is fixed to the bracket; and a voice coil coupled to the diaphragm and located in the magnetic gap. Thus, a speaker unit with a diaphragm having an opening is provided, which has the effect of balancing the pressure of the front and rear sound fields.

Description

Speaker unit with a diaphragm having an opening

The invention relates to a speaker unit with a diaphragm having an opening, and in particular to a speaker unit which balances the pressure of the front and rear sound fields through the opening structure of the diaphragm.

After conventional earphones are inserted into the ear canal, if there is no front sound field pressure relief hole, a closed front sound field will be directly formed, which will cause pressure on the diaphragm and easily cause the diaphragm to deform during operation. Even for large-sized earphones, the closed design of the front sound field will cause the air to be continuously compressed when the front sound field vibrates, causing abnormal stress on the diaphragm surface and resulting in poor diaphragm mode. The usual result is that the low frequency is too saturated, and the mid- and high-frequency curves are relatively uneven and have large fluctuations.

The main purpose of the present invention is to provide a speaker unit with a diaphragm having an opening, which has the effect of balancing the pressure of the front and rear sound fields.

To achieve the above-mentioned effects, the technical features of the present invention include: a magnetic loop structure having a magnetic gap; a bracket coupled to the magnetic loop structure; a diaphragm consisting of a central portion and an annular portion surrounding the central portion, wherein the central portion has an opening structure, and the outer periphery of the annular portion is fixed to the bracket; and a voice coil coupled to the diaphragm and located in the magnetic gap.

In addition, the magnetic loop structure has a magnetic bowl, a magnet and a magnetic conductive plate, the magnet and the magnetic conductive plate are stacked in the magnetic bowl to form the magnetic gap, the bracket is combined with the magnetic bowl, and the bracket and the magnetic bowl are integrated or independent; wherein, the magnetic bowl, the magnet and the magnetic conductive plate have a magnetic loop structure through hole in the center, the bottom of the magnetic loop structure through hole is covered with a breathable mesh, and the bracket has a plurality of bracket through holes, and the bottoms of these bracket through holes are covered with breathable mesh.

In addition, the magnetic loop structure has a magnetic yoke, an annular magnet and an annular magnetic conductive plate. The magnetic yoke has a central protrusion. The annular magnet and the annular magnetic conductive plate surround the central protrusion to form the magnetic gap. The bracket is combined with the magnetic yoke. The bracket and the magnetic yoke are integrated or independent. The center of the central protrusion has a magnetic loop structure through hole, and the bottom of the magnetic loop structure through hole is covered with a breathable mesh.

Furthermore, the opening structure has a center point opening at the center point of the center portion, or the opening structure has a center area opening group in the center area of the center portion, or the opening structure has a peripheral area opening group in the peripheral area of the center portion, or the opening structure is a combination of the center point opening, the center area opening group and the peripheral area opening group; wherein the center point opening, the center area opening group and the peripheral area opening group are circular, rectangular or a combination thereof, the center point opening, the center area opening group and the peripheral area opening group are circular, and their opening diameters are greater than 0.5 mm; the center point opening, the center area opening group and the peripheral area opening group are rectangular, and their opening diagonal distances are greater than 0.5 mm.

First, please refer to FIG. 1 to FIG. 4 , the present invention includes: a magnetic loop structure 10, having a magnetic bowl 11, a magnet 12 and a magnetic conductive plate 13, the magnet 12 and the magnetic conductive plate 13 are stacked in the magnetic bowl 11 to form a magnetic gap 14, the magnetic bowl 11, the magnet 12 and the magnetic conductive plate 13 have a magnetic loop structure through hole 15 in the center, and the bottom of the magnetic loop structure through hole 15 is covered with a breathable mesh 16; a bracket 20, combined with the magnetic bowl 11, the bracket 20 has a plurality of bracket through holes 21, The bottom of the bracket through holes 21 is covered with a breathable mesh 22, and the bracket 20 and the magnetic bowl 11 can be integrated or independent; a diaphragm 30 is composed of a central portion 31 and an annular portion 32 surrounding the central portion 31, the annular portion 32 is a ridge, the central portion 31 can be flat or ridged, and the central portion 31 has an open hole structure 33, the outer periphery of the annular portion 32 is fixed to the bracket 20; and a voice coil 40, which is combined with the diaphragm 30 and is located in the magnetic gap 14.

Furthermore, referring to FIG. 5 , the opening structure 33 has a central opening 331 at the central point of the central portion 31, or the opening structure 33 has a central opening group 332 at the central area of the central portion 31, or the opening structure 33 has a peripheral opening group 333 at the peripheral area of the central portion 31, or the opening structure 33 is a combination of the central opening 331, the central opening group 332 and the peripheral opening group 333. wherein the center point opening 331, the center area opening group 332 and the peripheral area opening group 333 are circular, rectangular or a combination thereof; further, when the center point opening 331, the center area opening group 332 and the peripheral area opening group 333 are circular, their opening diameters are greater than 0.5 mm; when the center point opening 331, the center area opening group 332 and the peripheral area opening group 333 are rectangular, their opening diagonal distances are greater than 0.5 mm.

However, please refer to FIG. 6 , the magnetic loop structure may also adopt an external magnetic type magnetic loop structure 10a having a magnetic yoke 11a, an annular magnet 12a and an annular magnetic conductive plate 13a, and the magnetic yoke 11a has a central boss 111, and the annular magnet 12a and the annular magnetic conductive plate 13a are surrounded by the central boss 111 to form a magnetic gap 14a, and the center of the central boss 111 has a magnetic loop structure through hole 15a, and the bottom of the magnetic loop structure through hole 15a is covered with a breathable mesh 16a, and the bracket 20a is combined with the magnetic yoke 11a, and the diaphragm 30a and the voice coil 40a are only slightly different from the aforementioned diaphragm 30 and voice coil 40 in size.

Based on such a structure, the present invention is designed with an opening structure 33 at the center portion 31 of the diaphragm to form a diaphragm 30. The center portion 31 of the diaphragm is in a suspended state and will not affect (reduce) the amplitude of the diaphragm. The opening structure 33 balances the pressure of the front and rear sound fields, so that the front sound field can be properly decompressed to avoid deformation of the diaphragm when it moves (poor mode), resulting in the advantages of not being too dull in the low frequency, small variation in the mid-frequency performance, and good extension of the high-frequency sound. Therefore, the present invention has the effect of balancing the pressure of the front and rear sound fields.

In summary, the technical means disclosed in this new model do meet the new patent requirements such as "novelty", "progressiveness" and "availability for industrial application". We pray that the Bureau of Justice will grant us a patent to encourage new models without any sense of gratitude.

However, the above disclosed drawings and descriptions are only preferred embodiments of the present invention. Any modifications or equivalent changes made by those skilled in the art within the spirit and scope of the present invention should still be included in the scope of the patent application of the present invention.

10: Magnetic loop structure 10a: External magnetic type magnetic loop structure 11: Magnetic bowl 11a: Magnetic yoke 111: Central boss 12: Magnet 12a: Ring magnet 13: Magnetic plate 13a: Ring magnetic plate 14, 14a: Magnetic gap 15, 15a: Magnetic loop structure through hole 16, 16a: Breathable mesh 20, 20a: Bracket 21: Bracket through hole 22: Breathable mesh 30, 30a: Diaphragm 31: Center 32: Ring 33: Opening structure 331: Center point opening 332: Center area opening group 333: Peripheral area opening group 40, 40a: Voice coil

Figure 1 is a structural exploded view of the present invention. Figure 2 is a structural appearance view of the present invention from a top view angle. Figure 3 is a structural appearance view of the present invention from a bottom view angle. Figure 4 is a structural cross-sectional view of the present invention. Figure 5 is a diagram illustrating the arrangement of the opening structure of the present invention. Figure 6 is a structural cross-sectional view of the present invention using an external magnetic magnetic loop structure.

10: Magnetic loop structure

11: Magnetic bowl

12: Magnet

13: Magnetic plate

14: Magnetic gap

15: Magnetic loop structure through hole

16: Breathable mesh

20: Bracket

30: Diaphragm

31: Center

32: Ring-shaped part

33: Open hole structure

331: Center point opening

40: Voice coil

Claims (10)

A speaker unit with a diaphragm having an opening comprises: a magnetic loop structure having a magnetic gap; a bracket coupled to the magnetic loop structure; a diaphragm consisting of a central portion and an annular portion surrounding the central portion, wherein the central portion has an opening structure, and the outer periphery of the annular portion is fixed to the bracket; and a voice coil coupled to the diaphragm and located in the magnetic gap. The diaphragm as described in claim 1 has a speaker unit with an opening, wherein the magnetic loop structure has a magnetic bowl, a magnet and a magnetic conductive plate, the magnet and the magnetic conductive plate are stacked in the magnetic bowl to form the magnetic gap, the bracket is combined with the magnetic bowl, and the bracket and the magnetic bowl are integrated or independent. The diaphragm as described in claim 2 has a speaker unit with an opening, wherein the magnetic bowl, the magnet and the magnetic conductive plate have a magnetic loop structure through hole in the center, and the bracket has a plurality of bracket through holes. The diaphragm as described in claim 3 has a speaker unit with an opening, wherein the bottom of the through hole of the magnetic loop structure is covered with a breathable mesh, and the bottom of the through holes of the supports are covered with a breathable mesh. The diaphragm as described in claim 1 has a speaker unit with an opening, wherein the magnetic loop structure has a magnetic yoke, an annular magnet and an annular magnetic conductive plate, the magnetic yoke has a central protrusion, the annular magnet and the annular magnetic conductive plate surround the central protrusion to form the magnetic gap, the bracket is combined with the magnetic yoke, and the bracket and the magnetic yoke are integrated or independent. The diaphragm as described in claim 5 has a speaker unit with an opening, wherein the center of the central protrusion has a magnetic loop structure through-hole. The diaphragm as described in claim 6 has a speaker unit with an opening, wherein the bottom of the through-hole of the magnetic loop structure is covered with a breathable mesh. A speaker unit with a diaphragm having an opening as described in any one of claim 1 to claim 7, wherein the opening structure has a center point opening at the center point of the center portion, or the opening structure has a center area opening group in the center area of the center portion, or the opening structure has a peripheral area opening group in the peripheral area of the center portion, or the opening structure is a combination of the center point opening, the center area opening group and the peripheral area opening group. The diaphragm as described in claim 8 has a speaker unit with an opening, wherein the center point opening, the center area opening group and the peripheral area opening group are circular, rectangular or a combination thereof. The diaphragm as described in claim 9 has a speaker unit with openings, wherein the center point opening, the center area opening group and the peripheral area opening group are circular, and the opening diameters thereof are greater than 0.5 mm; the center point opening, the center area opening group and the peripheral area opening group are rectangular, and the diagonal distance between the openings is greater than 0.5 mm.

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