Dual-diaphragm speaker monoblock

Abstract

This utility model belongs to the field of loudspeaker technology and discloses a dual-diaphragm loudspeaker unit. The dual-diaphragm loudspeaker unit includes: a bracket; a mounting structure having a mounting groove and a mounting edge, the mounting groove having a first mounting cavity inside; the mounting groove, the mounting edge, and the bracket enclose a second mounting cavity; a first vibration system including a first diaphragm and a first coil; a second vibration system including a second diaphragm and a second coil; by having a first mounting space inside the mounting groove, the mounting groove, the mounting edge, and the bracket define a second mounting space located outside the first mounting space, and the first coil is installed in the first mounting space, and the second coil is installed in the second mounting space, and the first diaphragm closes one side opening of the bracket, and the second diaphragm closes the other side opening of the bracket; since the first coil or the second coil does not need to occupy additional space in the thickness direction of the dual-diaphragm loudspeaker unit, this arrangement reduces the volume of the dual-diaphragm loudspeaker unit.

Description

Technical Field

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

[0002] With the continuous advancement of technology, personal electronic products are trending towards being lighter and miniaturized, such as smartphones, tablets, and laptops. These products have become indispensable in people's daily lives. Regardless of the type of electronic product, headphones have become an essential accessory to allow users to hear the audio without disturbing or being disturbed by others. Headphones provide a superior listening experience; even when the speaker is placed far from the user's ears, the sound is clearly audible, unlike the unclear sound that often occurs when sound travels through the air. This is especially true in dynamic environments, such as during exercise, driving, strenuous activity, or noisy environments.

[0003] To improve the usability and sound quality of headphone products, most existing speaker drivers are equipped with two diaphragms, but this also increases the size of the speaker driver.

[0004] The above shortcomings need to be improved. Summary of the Invention

[0005] To address the issue of reducing the volume of a dual-diaphragm speaker unit while equipping it with dual diaphragms, this invention provides a dual-diaphragm speaker unit.

[0006] The technical solution of this utility model is as follows:

[0007] A dual-diaphragm speaker unit includes a support, has a receiving cavity, and has openings on both sides of the receiving cavity;

[0008] The mounting structure is assembled into the accommodating cavity and has a mounting groove and a mounting edge fixed on the mounting groove, wherein the mounting groove contains a first mounting cavity; the mounting groove, the mounting edge, and the bracket enclose a second mounting cavity located outside the first mounting cavity;

[0009] A first vibration system includes a first diaphragm and a first coil, wherein the first diaphragm is mounted on the bracket and closes an opening on one side of the bracket; at least a portion of the first coil is located within the first mounting cavity, and the first coil is fixed to the first diaphragm;

[0010] The second vibration system includes a second diaphragm and a second coil, wherein the second diaphragm is mounted on the bracket and closes the opening on the other side of the bracket; at least a portion of the second coil is located in the second mounting cavity, and the second coil is fixed to the second diaphragm;

[0011] A magnetic assembly includes a first magnetic element and a second magnetic element, wherein the first magnetic element is assembled into the first mounting cavity and located within the opening of the first coil, and the second magnetic element is placed in the second mounting cavity and located beside the second coil.

[0012] Furthermore, the first magnetic component has a first through hole; the bottom wall of the mounting groove has a second through hole; the second diaphragm has a third through hole extending in the upper and lower directions, and the first through hole, the second through hole and the third through hole are sequentially connected to form a first sound hole;

[0013] The first diaphragm, the bracket, the mounting groove, and the mounting edge together enclose the first sound cavity, and the first sound cavity is connected to the outside through the first sound hole.

[0014] Furthermore, the second diaphragm, the bracket, the mounting groove, and the mounting edge together enclose the second sound cavity;

[0015] The cavity wall of the bracket is provided with a second sound hole extending along its own direction, and the second sound cavity is connected to the outside through the second sound hole.

[0016] Furthermore, the cavity wall of the support also has a third tone hole arranged symmetrically with the second tone hole about the axis of symmetry, and the second tone cavity is also connected to the outside through the third tone hole.

[0017] Furthermore, it also includes two tuning components, one of which covers the opening of the second sound hole on the side away from the mounting structure, and the other of which covers the opening of the third sound hole on the side away from the mounting structure.

[0018] It also includes a first gasket, which is located within the first mounting cavity and placed on the first magnetic element.

[0019] It also includes a second gasket, which is located within the second mounting cavity and placed on the second magnetic element.

[0020] Furthermore, it also includes a circuit board, which is disposed on the outer peripheral wall of the bracket.

[0021] Furthermore, it also includes a protective shell, which covers the bracket and is located outside the first diaphragm.

[0022] According to the above-described solution, the beneficial effect of this utility model is that one application scenario of the speaker unit is its assembly into an earphone. The speaker unit is equipped with dual diaphragms (i.e., a first diaphragm and a second diaphragm). A first mounting space is defined within the mounting groove, and the mounting groove, mounting edge, and bracket define a second mounting space located outside the first mounting space. A first coil is installed in the first mounting space, and a second coil is installed in the second mounting space. The first diaphragm closes one opening of the bracket, and the second diaphragm closes the other opening of the bracket. Since the first or second coil does not need to occupy additional space in the thickness direction of the dual-diaphragm speaker unit, this arrangement reduces the volume of the dual-diaphragm speaker unit. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a dual-diaphragm speaker unit in one embodiment of the present invention;

[0025] Figure 2 This is an exploded view of a dual-diaphragm speaker unit in one embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of a dual-diaphragm horn unit according to one embodiment of the present invention.

[0027] In the figure, the following labels are used: 1. Dual-diaphragm speaker unit; 10. Bracket; 100. Accommodation cavity; 101. Second sound hole; 102. Third sound hole; 11. Mounting structure; 110. Mounting groove; 1100. First mounting cavity; 1101. Second through hole; 111. Mounting edge;

[0028] 12. First vibration system; 120. First diaphragm; 121. First coil; 13. Second vibration system; 130. Second diaphragm; 1300. Third through hole; 131. Second coil; 14. Magnetic component; 140. First magnetic element; 1400. First through hole; 141. Second magnetic element; 15. Second mounting cavity; 16. First sound hole; 17. First sound cavity; 18. Second sound cavity; 19. Tuning component; 20. Circuit board; 21. Protective shell; 22. First gasket; 23. Second gasket. Detailed Implementation

[0029] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0030] It should be noted that when a component is referred to as "fixed," "set," or "connected" to another component, it may be located directly or indirectly on that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first," "second," etc., are used for ease of description only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "Many" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0031] This invention provides a dual-diaphragm speaker unit 1, which can be applied to headphones. Of course, this dual-diaphragm speaker unit 1 can also be applied to other products that need to play audio.

[0032] like Figures 1-3 As shown, this utility model provides a dual-diaphragm speaker unit 1, including a bracket 10. The bracket 10 is generally annular in shape and has a receiving cavity 100, with openings formed on both sides of the receiving cavity 100.

[0033] The mounting structure 11 is approximately U-shaped. It is assembled into the receiving cavity 100, or rather, it is fitted within the receiving cavity 100 of the bracket 10. The mounting structure 11 has a cylindrical mounting groove 110 and a mounting edge 111 fixed to the groove opening of the mounting groove 110 (one end of the first mounting cavity 1100 is sealed, and the other end has an opening). The outer edge of the mounting edge 111 abuts against the cavity wall of the receiving cavity 100 when the mounting structure 11 is assembled into the receiving cavity 100. It is understood that the mounting groove 110 and the mounting edge 111 can be integrally formed or separate parts; this invention does not impose any limitation on this. The mounting groove 110 contains the first mounting cavity 1100, and the mounting groove 110, the mounting edge 111, and the bracket 10 enclose a second mounting cavity 15. Clearly, the second mounting cavity 15 is located outside the first mounting cavity 1100.

[0034] The first vibration system 12 includes a first diaphragm 120 and a first coil 121. The first diaphragm 120 is mounted on the bracket 10 and closes an opening on one side of the bracket 10. At least a portion of the first coil 121 is located within the first mounting cavity 1100 and is fixed to the first diaphragm 120. The second vibration system 13 includes a second diaphragm 130 and a second coil 131. The second diaphragm 130 is mounted on the bracket 10 and closes an opening on the other side of the bracket 10. At least a portion of the second coil 131 is located within the second mounting cavity 15 and is fixed to the second diaphragm 130. The magnetic assembly 14 includes a first magnetic element 140 and a second magnetic element 141. The first magnetic element 140 is assembled into the first mounting cavity 1100 and located within the coil opening of the first coil 121. The second magnetic element 141 is placed within the second mounting cavity 15 and located beside the second coil 131. Clearly, by cooperating with the first coil 121 and the first magnetic element 140, the first coil 121 can drive the first diaphragm 120 to vibrate and produce sound. By cooperating with the second coil 131 and the second magnetic element 141, the second coil 131 can drive the second diaphragm 130 to produce sound. Obviously, the independently configured first diaphragm 120 and second diaphragm 130 can play audio from different sources. For example, on one hand, the first diaphragm 120 can be used to play noise audio obtained by converting ambient noise into a digital signal and inverting it. On the other hand, the second diaphragm 130 can be used to play target audio input from an external audio source, such as music, voice content, etc. Based on this, the second diaphragm 130 can play audio input from an external audio source under high fidelity conditions, and the inverted noise audio played by the first diaphragm 120 can also cancel out ambient noise to achieve noise reduction.

[0035] Furthermore, as mentioned above, the second mounting cavity 15 is located on the periphery of the first mounting cavity 1100. By installing the first coil 121 in the first mounting cavity 1100 and the second coil 131 in the second mounting cavity 15 (obviously, the first coil 121 or the second coil 131 does not need to occupy additional space in the thickness direction of the dual-diaphragm speaker unit 1), and by sealing the opening on one side of the bracket 10 with the first diaphragm 120 and the opening on the other side of the bracket 10 with the second diaphragm 130, the thickness of the dual-diaphragm speaker unit can be reduced, thereby reducing the volume of the dual-diaphragm speaker unit 1.

[0036] In one specific embodiment, the first magnetic component 140 has a first through hole 1400, the bottom wall of the mounting groove 110 has a second through hole 1101, and the second diaphragm 130 has a third through hole 1300 extending in the upper and lower directions. The first through hole 1400, the second through hole 1101, and the third through hole 1300 are sequentially connected to form a first sound hole 16. The first diaphragm 120, the bracket 10, the mounting groove 110, and the mounting edge 111 together enclose a first sound cavity 17, and the first sound cavity 17 is connected to the outside through the first sound hole 16.

[0037] In one specific embodiment, the second diaphragm 130, the bracket 10, the mounting groove 110, and the mounting edge 111 together enclose the second sound cavity 18; the cavity wall of the bracket 10 is provided with a second sound hole 101 extending along its own direction, and the second sound cavity 18 is connected to the outside through the second sound hole 101.

[0038] In one specific embodiment, the cavity wall of the support 10 also has a third sound hole 102 arranged symmetrically with the second sound hole 101 about the axis of symmetry, and the second sound cavity 18 is also connected to the outside through the third sound hole 102.

[0039] In one specific embodiment, to prevent external objects (e.g., dust, debris, and finger lights) from directly contacting the diaphragm while ensuring sound is evenly propagated to the surrounding environment (reducing direct reflection or diffraction of sound waves), thereby optimizing sound quality, the dual-diaphragm speaker unit 1 includes two tuning components 19. One tuning component 19 covers the opening of the second sound hole 101 on the side away from the mounting structure 11, and the other tuning component 19 covers the opening of the third sound hole 102 on the side away from the mounting structure 11. Obviously, the tuning components 19 can be made of fabric or other suitable materials.

[0040] In one specific embodiment, in order to reduce the vibration of the first magnetic element 140, the dual-diaphragm speaker unit 1 includes a first gasket 22, which is located in the first mounting cavity 1100 and placed on the first magnetic element 140.

[0041] In one specific embodiment, in order to reduce the vibration of the second magnetic element 141, the dual-diaphragm speaker unit 1 further includes a second gasket 23, which is located in the second mounting cavity 15 and placed on the second magnetic element 141.

[0042] In one specific embodiment, the dual-diaphragm speaker unit 1 further includes a circuit board 20, which is disposed on the outer peripheral wall of the support 10. Specifically, the circuit board 20 can be a PCB, and the PCB integrates components for implementing the capacitor crossover function, so that the components for implementing the capacitor crossover function direct the noise signal to the first diaphragm 120 and the first coil 121 for noise cancellation, and direct the target audio signal to the second diaphragm 130 and the second coil 131 for playing the target audio; or, the circuit board 20 is a circuit board combining a PCB and a flexible circuit board, and the flexible circuit board integrates components for implementing the capacitor crossover function.

[0043] In one specific embodiment, in order to prevent damage to the dual-diaphragm speaker unit 1, the dual-diaphragm speaker unit 1 further includes a protective shell 21, which covers the bracket 10 and is located on the outside of the first diaphragm 120.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-diaphragm speaker unit, characterized in that, include: The support has a receiving cavity, and openings are formed on both sides of the receiving cavity; The mounting structure is assembled into the accommodating cavity and has a mounting groove and a mounting edge fixed on the mounting groove, wherein the mounting groove contains a first mounting cavity; the mounting groove, the mounting edge, and the bracket enclose a second mounting cavity located outside the first mounting cavity; A first vibration system includes a first diaphragm and a first coil, wherein the first diaphragm is mounted on the bracket and closes an opening on one side of the bracket; at least a portion of the first coil is located within the first mounting cavity, and the first coil is fixed to the first diaphragm; The second vibration system includes a second diaphragm and a second coil, wherein the second diaphragm is mounted on the bracket and closes the opening on the other side of the bracket; at least a portion of the second coil is located in the second mounting cavity, and the second coil is fixed to the second diaphragm; A magnetic assembly includes a first magnetic element and a second magnetic element, wherein the first magnetic element is assembled into the first mounting cavity and located within the opening of the first coil, and the second magnetic element is placed in the second mounting cavity and located beside the second coil.

2. The dual-diaphragm speaker unit according to claim 1, characterized in that, The first magnetic component has a first through hole; the bottom wall of the mounting groove has a second through hole; the second diaphragm has a third through hole that extends along the upper and lower directions, and the first through hole, the second through hole and the third through hole are sequentially connected to form a first sound hole; The first diaphragm, the bracket, the mounting groove, and the mounting edge together enclose the first sound cavity, and the first sound cavity is connected to the outside through the first sound hole.

3. The dual-diaphragm speaker unit according to claim 2, characterized in that, The second diaphragm, the bracket, the mounting groove, and the mounting edge together enclose the second sound cavity; The cavity wall of the bracket is provided with a second sound hole extending along its own direction, and the second sound cavity is connected to the outside through the second sound hole.

4. The dual-diaphragm speaker unit according to claim 3, characterized in that, The cavity wall of the bracket also has a third tone hole arranged symmetrically with the second tone hole about the axis of symmetry, and the second tone cavity is also connected to the outside through the third tone hole.

5. The dual-diaphragm horn unit according to claim 4, characterized in that, It also includes two tuning components, one of which covers the opening of the second sound hole on the side away from the mounting structure, and the other of which covers the opening of the third sound hole on the side away from the mounting structure.

6. The dual-diaphragm horn unit according to claim 1, characterized in that, It also includes a first gasket, which is located within the first mounting cavity and placed on the first magnetic element.

7. The dual-diaphragm speaker unit according to claim 1, characterized in that, It also includes a second gasket, which is located within the second mounting cavity and placed on the second magnetic element.

8. The dual-diaphragm horn unit according to any one of claims 1-7, characterized in that, It also includes a circuit board, which is disposed on the outer peripheral wall of the bracket.

9. The dual-diaphragm horn unit according to any one of claims 1-7, characterized in that, It also includes a protective shell, which covers the bracket and is located outside the first diaphragm.

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