Loudspeaker single body with vibrating diaphragm provided with holes

Abstract

The utility model relates to a loudspeaker monomer with a vibrating diaphragm provided with an opening, comprising a magnetic loop structure which is provided with a magnetic bowl, a magnet and a magnetic conductive plate, and the magnet and the magnetic conductive plate are stacked in the magnetic bowl to form a magnetic gap; the bracket is combined with the top of the magnetic bowl; the vibrating diaphragm is composed of a central part and an annular part surrounding the central part, the central part is provided with an open pore structure, and the outer periphery of the annular part is fixed on the support; and the voice coil is combined with the vibrating diaphragm and is positioned in the magnetic gap. Therefore, the loudspeaker single body with the vibrating diaphragm provided with the hole has the effect of balancing the pressure of front and back sound fields.

Description

Technical Field

[0001] The utility model relates to a loudspeaker unit with a diaphragm having an opening, in particular to a design for balancing the pressure of front and rear sound fields through the opening structure of the diaphragm. Background Art

[0002] 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-size earphones, the closed design of the front sound field will cause the gas 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. Utility Model Content

[0003] The main technical problem to be solved by the utility model is to overcome the above-mentioned defects of the prior art and 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.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A loudspeaker 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.

[0006] 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 bottom of these bracket through holes is covered with a breathable mesh.

[0007] 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, and 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.

[0008] Furthermore, the opening structure is provided with a center point opening at the center point of the center portion, or the opening structure is provided with a center area opening group in the center area of ​​the center portion, or the opening structure is provided with a peripheral area opening group in the peripheral area of ​​the center portion, or the opening structure combines 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 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 of the openings is greater than 0.5 mm.

[0009] The beneficial effect of the utility model is that it has the effect of balancing the pressure of the front and rear sound fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 It is a structural exploded view of the utility model.

[0012] Figure 2 This is a structural appearance diagram of the utility model from a top view.

[0013] Figure 3 This is a structural appearance diagram of the utility model from an upward viewing angle.

[0014] Figure 4 It is a structural sectional view of the utility model.

[0015] Figure 5 It is an illustration of the arrangement of the opening structure of the utility model.

[0016] Figure 6 It is a structural cross-sectional view of the utility model adopting an external magnetic magnetic return structure.

[0017] Description of the numbers in the figure:

[0018] 10 magnetic loop structure

[0019] 10a external magnetic return structure

[0020] 11 Magnetic bowl

[0021] 11a Magnetic yoke

[0022] 111 center boss

[0023] 12 Magnets

[0024] 12a Ring Magnet

[0025] 13 Magnetic plate

[0026] 13a Ring magnetic plate

[0027] 14, 14a Magnetic gap

[0028] 15, 15a magnetic loop structure through hole

[0029] 16, 16a breathable mesh

[0030] 20, 20a bracket

[0031] 21 bracket through hole

[0032] 22 breathable mesh

[0033] 30, 30a diaphragm

[0034] 31 Center

[0035] 32 ring part

[0036] 33 Open hole structure

[0037] 331 center point opening

[0038] 332 Central Area Opening Group

[0039] 333 Peripheral area opening group

[0040] 40, 40a voice coil DETAILED DESCRIPTION

[0041] First, see Figure 1 to Figure 4 As shown, the utility model 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, and the bracket through holes The bottom of 21 is covered with a breathable mesh 22, and the bracket 20 and the magnetic bowl 11 can be integrated or independent; the 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, and the outer periphery of the annular portion 32 is fixed to the bracket 20; and the voice coil 40 is combined with the diaphragm 30 and is located in the magnetic gap 14.

[0042] Furthermore, please see Figure 5As shown, the opening structure 33 is provided with a central opening 331 at the central point of the central portion 31, or the opening structure 33 is provided with a central area opening group 332 at the central area of ​​the central portion 31, or the opening structure 33 is provided with a peripheral area opening group 333 at the peripheral area of ​​the central portion 31, or the opening structure 33 is combined with the central opening 331, the central area opening group 332 and the peripheral area opening group 333; wherein, the 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, the opening diameters thereof 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, the diagonal distance of the openings thereof is greater than 0.5 mm.

[0043] However, see Figure 6 As shown, the magnetic return structure can also adopt an external magnetic return structure 10a having a yoke 11a, an annular magnet 12a and an annular magnetic conductive plate 13a, and the yoke 11a has a central boss 111, and the annular magnet 12a and the annular magnetic conductive plate 13a surround the central boss 111 to form a magnetic gap 14a, and the center of the central boss 111 has a magnetic return structure through hole 15a, and the bottom of the magnetic return structure through hole 15a is covered with a breathable mesh 16a, the bracket 20a is combined with the yoke 11a, and the diaphragm 30a and the voice coil 40a are only slightly different in size from the aforementioned diaphragm 30 and voice coil 40.

[0044] Based on the above structure, the utility model is designed with an opening structure 33 at the central part 31 of the diaphragm to form a diaphragm 30. The central part 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 is actuated (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 utility model has the effect of balancing the pressure of the front and rear sound fields.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A loudspeaker unit having a diaphragm with an opening, characterized in that: include: A magnetic loop structure with a magnetic gap; A bracket, combined with the magnetic loop structure; The diaphragm is composed of a central portion and an annular portion surrounding the central portion, wherein the central portion has an open hole structure, and the outer periphery of the annular portion is fixed to the bracket; as well as The voice coil is combined with the diaphragm and is located in the magnetic gap.

2. The speaker unit having a diaphragm with an opening according to claim 1, characterized in that: The magnetic loop structure comprises 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. The bracket and the magnetic bowl are integrated or independent.

3. The speaker unit having a diaphragm with an opening according to claim 2, characterized in that: The magnetic bowl, the magnet and the magnetic conductive plate have magnetic loop structure through holes in their centers, and the bracket has a plurality of bracket through holes.

4. The speaker unit having a diaphragm with an opening according to claim 3, characterized in that: 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 brackets are covered with a breathable mesh.

5. The speaker unit having a diaphragm with an opening according to claim 1, characterized in that: The magnetic loop structure comprises 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.

6. The speaker unit having a diaphragm with an opening according to claim 5, characterized in that: The center of the central protrusion has a magnetic loop structure through hole.

7. The speaker unit having a diaphragm with an opening according to claim 6, characterized in that: The bottom of the through hole of the magnetic loop structure is covered with a breathable mesh.

8. A loudspeaker unit having a diaphragm with an opening according to any one of claims 1 to 7, characterized in that: The opening structure is provided with a central point opening at the central point of the central part, or the opening structure is provided with a central area opening group in the central area of ​​the central part, or the opening structure is provided with a peripheral area opening group in the peripheral area of ​​the central part, or the opening structure is a combination of the central point opening, the central area opening group and the peripheral area opening group.

9. The loudspeaker unit having a diaphragm with an opening according to claim 8, characterized in that: The central point opening, the central area opening group and the peripheral area opening group are circular, rectangular or a combination thereof.

10. The loudspeaker unit having a diaphragm with an opening according to claim 9, characterized in that: The central point opening, the central area opening group and the peripheral area opening group are circular, and the opening diameters thereof are greater than 0.5 mm; the central point opening, the central area opening group and the peripheral area opening group are rectangular, and the diagonal distance of the openings thereof is greater than 0.5 mm.

Images