Double-diaphragm sounding loudspeaker

Abstract

The utility model discloses a double-diaphragm sounding loudspeaker, which comprises a cover body, a support arranged at the center of the cover body, a magnetic circuit structure arranged at the center of the support, a first diaphragm arranged above the magnetic circuit structure and a first voice coil adhered to the first diaphragm, and a second diaphragm arranged below the magnetic circuit structure and a second voice coil adhered to the second diaphragm, the double-diaphragm sounding horn is also provided with a sounding hole. According to the utility model, the double-diaphragm and double-voice-coil structure is adopted and is distributed at two sides of the magnetic circuit, and the double-diaphragm and double-voice-coil structure adopts a single-magnetic-circuit sharing structure, so that the thickness of the loudspeaker is greatly reduced, and under the condition of small appearance size, the diaphragm area is not reduced, and the diaphragm area is also enlarged by the double-diaphragm and double-voice-coil structure, so that the size of the loudspeaker is reduced. In addition, the loudspeaker can emit sound from the top and the bottom and can also emit sound from the side edge, so that the flexibility is higher.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and more specifically, to a dual-diaphragm loudspeaker. Background Technology

[0002] As electronic products become smaller, the internal space of headphones or smart glasses requires the speaker to also become smaller. The speaker is a core component, and as its size decreases, its diaphragm area also decreases, which in turn reduces its performance. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing speakers in terms of performance degradation, and to provide a dual-diaphragm speaker to solve the above-mentioned deficiencies.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0005] A dual-diaphragm loudspeaker includes a cover, a support is provided in the center of the cover, a magnetic circuit structure is arranged in the center of the support, a first diaphragm and a first voice coil bonded to the first diaphragm are provided above the magnetic circuit structure, a second diaphragm and a second voice coil bonded to the second diaphragm are provided below the magnetic circuit structure, and the dual-diaphragm loudspeaker also has a sound outlet.

[0006] Furthermore, the cover includes a first front cover and a second front cover, which are distributed on both sides of the bracket and are adhered to the bracket.

[0007] Furthermore, both the first and second front covers have a leakage hole in the center, and the two leakage holes are covered by a mesh fabric disposed on the first and second front covers.

[0008] Furthermore, the magnetic circuit structure includes an inner magnet and an outer magnet, with the outer edge of the outer magnet embedded in the groove of the bracket, the inner magnet located in the center of the outer magnet, and a fixing ring embedded between the inner magnet and the outer magnet. The inner magnet and the outer magnet have opposite magnetic properties.

[0009] Furthermore, the sound outlet includes a first sound outlet and a second sound outlet, which are located vertically on the side of the support.

[0010] Furthermore, the first sound outlet is located between the magnetic circuit structure and the first diaphragm, and the second sound outlet is located between the magnetic circuit structure and the second diaphragm.

[0011] Furthermore, the sound outlet includes a third sound outlet located on the side of the first front cover and a fourth sound outlet located on the side of the second front cover.

[0012] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0013] This invention employs a dual-diaphragm and dual-voice coil structure, distributed on both sides of the magnetic circuit. Furthermore, the dual-diaphragm and dual-voice coil structure utilizes a single magnetic circuit shared structure, significantly reducing the speaker's thickness. Despite its small overall size, the diaphragm area is not reduced; in fact, the dual-diaphragm and dual-voice coil structure expands the diaphragm area, improving speaker performance. Additionally, the speaker can emit sound from the top and bottom (through a leakage hole) or from the side (through a sound outlet on the side), offering greater flexibility. Attached Figure Description

[0014] Figure 1 This is a top view assembly diagram of Embodiment 1 of the present invention;

[0015] Figure 2 This is an assembly drawing from a bottom-view perspective of Embodiment 1 of this utility model;

[0016] Figure 3 This is an exploded view of Embodiment 1 of the present invention;

[0017] Figure 4 This is a cross-sectional view of Embodiment 1 of the present invention;

[0018] Figure 5 This is an assembly drawing of Embodiment 2 of the present invention;

[0019] Figure 6 This is a cross-sectional view of Embodiment 2 of the present invention.

[0020] In the diagram: 1. Bracket; 2. First diaphragm; 3. First voice coil; 4. Second diaphragm; 5. Second voice coil; 6. Fixing ring; 7. First front cover; 8. Second front cover; 9. Leakage hole; 10. Mesh fabric; 11. Inner magnet; 12. Outer magnet; 13. First sound outlet; 14. Second sound outlet; 15. Third sound outlet; 16. Fourth sound outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0023] Example 1: See Figures 1-3A dual-diaphragm loudspeaker includes a cover, a support 1 in the center of the cover, a magnetic circuit structure in the center of the support 1, a first diaphragm 2 and a first voice coil 3 bonded to the first diaphragm 2 above the magnetic circuit structure, a second diaphragm 4 and a second voice coil 5 bonded to the second diaphragm 4 below the magnetic circuit structure, and diaphragms and voice coils on both sides of the magnetic circuit structure, forming a dual voice coil and dual diaphragm structure. The dual-diaphragm loudspeaker also has a sound outlet.

[0024] As an embodiment of this utility model, see [reference]. Figures 1-3 The cover includes a first front cover 7 and a second front cover 8. The first front cover 7 and the second front cover 8 are distributed on both sides of the bracket 1. The first front cover 7 and the second front cover 8 are glued to the bracket 1. The edges of the cover are flush with the edges of the bracket 1.

[0025] It should be noted that, for reference Figure 4 Both the first front cover 7 and the second front cover 8 have leakage holes 9 in the center. The two leakage holes 9 are covered by a mesh 10 set on the first front cover 7 and the second front cover 8. The mesh 10 is used for dust or other foreign objects to fall into the speaker. The leakage holes 9 are connected to the vibration cavities of the first diaphragm 2 and the second diaphragm 4, and are used to relieve pressure in the cavity and can also be used for sound output.

[0026] As an embodiment of this utility model, see [reference]. Figures 3-4 The magnetic circuit structure includes an inner magnet 11 and an outer magnet 12. The outer edge of the outer magnet 12 is embedded in the groove of the bracket 1. The inner magnet 11 is located in the center of the outer magnet 12. A fixing ring 6 is embedded between the inner magnet 11 and the outer magnet 12. The function of the fixing ring 6 is to fix the inner and outer magnets together by mutual squeezing force. The inner magnet 11 and the outer magnet 12 have opposite magnetic properties. Figure 4 The dotted arcs shown are magnetic field lines, and N or S represent the magnetic pole distribution.

[0027] It should be noted that the first voice coil 3 and the second voice coil 5 shown in this embodiment are flat structures, facing the gap between the inner magnet 11 and the outer magnet 12, that is, facing the fixing ring 6. The shapes of the first voice coil 3 and the second voice coil 5 can also be circular or square structures (not shown in this embodiment), and their principles are similar.

[0028] It should be noted that the sound outlet includes a first sound outlet 13 and a second sound outlet 14. The first sound outlet 13 and the second sound outlet 14 are provided on the side of the support 1 and are distributed vertically. The first sound outlet 13 is located between the magnetic circuit structure and the first diaphragm 2, and the second sound outlet 14 is located between the magnetic circuit structure and the second diaphragm 4. Specifically, as shown... Figure 4 As shown, the first sound outlet 13 is below the first diaphragm 2, and the second sound outlet 14 is above the second diaphragm 4. The first sound outlet 13 and the second sound outlet 14 are used to emit sound generated by the vibration of the first diaphragm 2 and the second diaphragm 4 in the cavity.

[0029] Example 2: As Figure 5 As shown, unlike Embodiment 1, this embodiment includes a third sound outlet 15 located on the side of the first front cover 7, and a fourth sound outlet 16 located on the side of the second front cover 8, as shown. Figure 6 As shown, the third sound outlet 15 is above the first diaphragm 2, and the fourth sound outlet 16 is below the second diaphragm 4. The only difference from Embodiment 1 is the position of the sound outlets. Their functions are the same, both being used to emit sound generated by the vibration of the first diaphragm 2 and the second diaphragm 4 in the cavity.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-diaphragm speaker, comprising a cover, characterized in that... The cover is provided with a support (1) in the center, and a magnetic circuit structure is arranged in the center of the support (1). A first diaphragm (2) and a first voice coil (3) bonded to the first diaphragm (2) are arranged above the magnetic circuit structure. A second diaphragm (4) and a second voice coil (5) bonded to the second diaphragm (4) are arranged below the magnetic circuit structure. The dual-diaphragm speaker also has a sound outlet.

2. The dual-diaphragm speaker according to claim 1, characterized in that... The cover includes a first front cover (7) and a second front cover (8), which are distributed on both sides of the bracket (1) and are bonded to the bracket (1).

3. A dual-diaphragm speaker according to claim 2, characterized in that... Both the first front cover (7) and the second front cover (8) have a leakage hole (9) in the center, and the two leakage holes (9) are covered by a mesh (10) provided on the first front cover (7) and the second front cover (8).

4. A dual-diaphragm speaker according to claim 1, characterized in that... The magnetic circuit structure includes an inner magnet (11) and an outer magnet (12). The outer edge of the outer magnet (12) is embedded in the groove of the bracket (1). The inner magnet (11) is located in the center of the outer magnet (12). A fixing ring (6) is embedded between the inner magnet (11) and the outer magnet (12). The magnetism of the inner magnet (11) and the outer magnet (12) is opposite.

5. A dual-diaphragm speaker according to claim 1, characterized in that... The sound outlet includes a first sound outlet (13) and a second sound outlet (14), which are located on the side of the support (1) and distributed vertically.

6. A dual-diaphragm speaker according to claim 5, characterized in that... The first sound outlet (13) is located between the magnetic circuit structure and the first diaphragm (2), and the second sound outlet (14) is located between the magnetic circuit structure and the second diaphragm (4).

7. A dual-diaphragm speaker according to claim 2, characterized in that... The sound outlet includes a third sound outlet (15) located on the side of the first front cover (7) and a fourth sound outlet (16) located on the side of the second front cover (8).

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