Earphone front and rear cavity conduction structure and earphone

Abstract

The utility model discloses an earphone front and rear cavity conduction structure and an earphone, and relates to the technical field of loudspeakers, the earphone front and rear cavity conduction structure comprises a housing, a plastic member and a diaphragm, the housing is internally provided with a front cavity; the plastic part is arranged in the shell, one side of the plastic part is provided with a conduction gap, the other side of the plastic part is provided with a first air hole and a second air hole, one end of the conduction gap is communicated with the first air hole, and the other end of the conduction gap is communicated with the second air hole; the loudspeaker assembly is arranged on the side, away from the conduction gap, of the second air hole so that a rear cavity can be formed between the vibrating diaphragm and the second air hole. And an air passage is formed among the first air hole, the conduction gap and the second air hole so as to communicate the front cavity with the rear cavity.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a conductive structure for the front and rear cavities of an earphone and an earphone. Background Technology

[0002] Currently, the main product types in the headphone industry are over-ear headphones and in-ear headphones. In-ear headphones have a wider user base due to their smaller size and portability.

[0003] As users demand higher and higher sound quality, the structure of in-ear headphones has undergone several iterations and innovations. However, their noise reduction effect is relatively poor compared to over-ear headphones. The fully enclosed structure of the rear cavity of over-ear headphones greatly reduces sound leakage.

[0004] In existing technology, due to structural limitations, in-ear headphones typically have vents located on the back of the earphone shell to ensure the passage of air in the rear cavity. The acoustic impedance vents are connected to the vents on the rear cavity. This results in sound leakage during use and a decrease in noise cancellation performance. Utility Model Content

[0005] The main purpose of this utility model is to propose a front and rear cavity conductive structure for headphones, which aims to solve the technical problem in the prior art where the vent hole of in-ear headphones is opened on the back of the shell, resulting in sound leakage and poor noise reduction effect.

[0006] To achieve the above objectives, this utility model proposes a front and rear cavity conductive structure for an earphone, the front and rear cavity conductive structure comprising:

[0007] A housing having a front cavity inside;

[0008] A plastic part is disposed inside the housing. One side of the plastic part is provided with a through gap, and the other side is provided with a first vent hole and a second vent hole. One end of the through gap is connected to the first vent hole, and the other end is connected to the second vent hole.

[0009] The diaphragm, the speaker assembly is disposed on the side of the second vent hole opposite to the conductive gap, so as to form a rear cavity between the diaphragm and the second vent hole;

[0010] An air passage is formed between the first vent hole, the conductive gap, and the second vent hole to connect the front cavity and the rear cavity.

[0011] In addition, to solve the above problems, this utility model also proposes an earphone, which uses the aforementioned earphone front and rear cavity conduction structure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 the structures shown in these drawings without creative effort.

[0013] Figure 1 This is a cross-sectional structural diagram of an embodiment of the earphone front and rear cavity conductive structure of this utility model;

[0014] Figure 2 This is an exploded structural diagram of the conductive structure of the front and rear cavities of the earphone of this utility model.

[0015] Explanation of icon numbers:

[0016] 10. Housing; 11. Front cavity; 12. Rear cavity; 13. Sound outlet; 14. Connecting hole; 20. Plastic part; 21. First vent hole; 22. Second vent hole; 23. Conductive gap; 24. Limiting groove; 30. Speaker assembly; 31. Washer; 32. Magnet; 33. Locking part; 34. Structural hole; 40. Diaphragm; 50. Voice coil.

[0017] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] 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 scope of protection of the present utility model.

[0019] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0020] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] This utility model proposes a conductive structure for the front and rear cavities of an earphone.

[0022] Please see Figure 1 and Figure 2 In one embodiment of this utility model, the earphone's front and rear cavity conductive structure includes a housing 10, a plastic component 20, and a diaphragm 40. The housing 10 has a front cavity 11. The plastic component 20 is disposed within the housing 10. One side of the plastic component 20 has a conductive gap 23, and the other side has a first vent hole 21 and a second vent hole 22. One end of the conductive gap 23 communicates with the first vent hole 21, and the other end communicates with the second vent hole 22. The speaker assembly 30 is disposed on the side of the second vent hole 22 away from the conductive gap 23 to form a rear cavity 12 between the diaphragm 40 and the second vent hole 22. An air passage is formed between the first vent hole 21, the conductive gap 23, and the second vent hole 22 to connect the front cavity 11 and the rear cavity 12.

[0023] It should be noted that, Figure 2 The rear-side housing and sealing structure are not shown; they are only used to illustrate the installation sequence and the shape of each component.

[0024] Shell 10 has a hollow structure; please refer to... Figure 1 The plastic part 20 is installed at the middle position of the housing 10, and the edge of the plastic part 20 is fitted and sealed to the inner wall edge of the housing 10. The side of the plastic part 20 with the first vent 21 and the second vent 22 is defined as the front side, and the side of the plastic part 20 with the conductive gap 23 is defined as the rear side. Then, the accommodating cavity located on the front side of the plastic part 20 inside the housing 10 is the front cavity 11.

[0025] The first vent 21 and the second vent 22 pass through the front side to the rear side of the plastic part 20. However, in this embodiment, the rear side of the plastic part 20 is closed, and there is a connecting gap 23 near the rear side. When the first vent 21 and the second vent 22 pass through the connecting gap 23, they are connected and form a connected air passage.

[0026] Furthermore, a diaphragm 40 is also covered on the second vent 22, with the edge of the diaphragm 40 connected to the edge of the second vent 22, thereby forming an air cavity between the diaphragm 40 and the vent 22, which is also the rear cavity 12. Under the action of the air passage, direct communication between the rear cavity 12 and the front cavity 11 can be achieved.

[0027] By directly connecting the rear cavity 12 to the front cavity 11, the rear side is completely closed, allowing the gas in the rear cavity 12 to flow into the front cavity 11. This not only preserves the breathability of the front and rear cavities 12 but also seals the rear cavity, improving the noise reduction effect of the in-ear headphones and enhancing the user experience.

[0028] In another embodiment, the number of second vent holes 22 can be set to multiple, with the multiple second vent holes 22 evenly spaced along the edge of the plastic part 20, and the first vent hole 21 located at the center of the plastic part 20. By increasing the length of the conductive gap 23, the multiple second vent holes 22 can simultaneously communicate with the first vent hole 21.

[0029] To improve connection stability, a limiting groove 24 is also provided on the plastic part 20. The limiting groove 24 is located at the edge of the second vent 22. Specifically, the edge of the second vent 22 is recessed from the front to the rear, thus forming a stepped structure. A fixing block of a suitable shape can be provided on the edge of the diaphragm 40, which is engaged in the limiting groove 24 to fix and limit the diaphragm 40, preventing the diaphragm 40 from falling off or shaking.

[0030] Please continue to refer to Figure 1 The plastic part 20 is a flexible structure. In this embodiment, a speaker assembly 30 is also provided inside the second vent 22, and the plastic part 20 encloses the entire speaker assembly 30. A structural hole 34 is also located at the center of the speaker assembly 30. The structural hole 34 extends through the entire speaker assembly 30, and its position corresponds to the rear cavity 12. One end of the structural hole 34 communicates with the rear cavity 12, and the other end communicates with the conductive gap 23. That is, even after the speaker assembly 30 is installed in the second vent 22, the rear cavity 12 can still communicate with the conductive gap 23 through the structural hole 34.

[0031] In addition, please continue to refer to Figure 1The speaker assembly 30 includes a washer 31, a magnet 32, and a locking member 33. The front side of the washer 31 is attached to the inner wall of the second vent 22 on the plastic part 20, the magnet 32 ​​is attached to the rear side of the washer 31, and the locking member 33 is attached to the rear side of the magnet 32, and cooperates with the plastic part 20 to fix the washer 31 and the magnet 32.

[0032] For details, please continue reading. Figure 1 Each of the washer 31 has a first sub-structural hole 34 on each of its left and right sides. Correspondingly, each of the magnet 32 ​​has a second sub-structural hole 34 on each of its left and right sides, and each of the locking member 33 has a third sub-structural hole 34 on each of its left and right sides. When they are stacked together, the sub-structural holes 34 are positioned correspondingly, thus forming a complete structural hole 34. Please refer to [link / reference]. Figure 2 The speaker assembly also includes a voice coil 50, which is disposed on the side of the structural hole 34 away from the conduction gap 23. Its specific position corresponds to the position of the washer 31 and the magnet 32, so that it works with the washer 31 and the magnet 32 ​​to produce sound.

[0033] Please see Figure 1 A sound outlet 13 is also provided on the side wall of the housing 10. The position of the sound outlet 13 corresponds to the position of the first vent 21. That is, the sound outlet 13 and the first vent 21 are located on the same straight line so that when the sound is transmitted from the rear cavity 12 to the first vent 21, it can be transmitted directly toward the sound outlet 13, thereby improving the clarity of the sound.

[0034] A connecting hole 14 is provided at the bottom of the housing 10. The connecting hole 14 is set at an angle downward. The sound passes through the connecting hole perpendicularly to the side wall of the housing 10 along the A direction. The connecting hole 14 is directly connected to the external environment, so as to avoid affecting the sound reception effect of the sound outlet 13 and improve the sound quality.

[0035] This utility model also proposes an earphone, which includes the earphone front and rear cavity conductive structure as described above. The specific structure of the earphone front and rear cavity conductive structure is as described in the above embodiments. Since this earphone adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0036] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An earphone front and back cavity conducting structure, characterized in that, The earphone front and rear cavity communication structure comprises: a shell having a front cavity in the shell; a plastic part provided in the shell, one side of the plastic part being provided with a communication gap, the other side of the plastic part being provided with a first air hole and a second air hole, wherein one end of the communication gap is in communication with the first air hole, and the other end of the communication gap is in communication with the second air hole; a loudspeaker assembly; a diaphragm, the loudspeaker assembly being arranged on the side of the second air hole away from the communication gap to form a rear cavity between the diaphragm and the second air hole; an air passage is formed between the first air hole, the communication gap and the second air hole to communicate the front cavity and the rear cavity.

2. The earphone front-rear cavity conducting structure according to claim 1, wherein, The plastic part is provided with a limiting groove at the edge position of the second air hole, and the diaphragm is arranged in the limiting groove.

3. The earphone front-rear cavity conducting structure according to claim 1, wherein, The loudspeaker assembly is arranged in the second air hole, and the loudspeaker assembly is provided with a structure hole, two ends of the structure hole being in communication with the rear cavity and the communication gap respectively.

4. The earphone front-rear cavity conducting structure according to claim 3, wherein, The loudspeaker assembly comprises a voice coil, a magnet and a locking part, the voice coil, the magnet and the locking part being arranged in sequence, wherein the locking part is located on the side close to the communication gap.

5. The earphone front-rear cavity conducting structure according to claim 4, wherein, The voice coil is provided with a first sub-structure hole, the magnet is provided with a second sub-structure hole, and the locking part is provided with a third sub-structure hole. When the voice coil, the magnet and the locking part are arranged in stack, the first sub-structure hole, the second sub-structure hole and the third sub-structure hole are positionally corresponding to form the structure hole.

6. The earphone front-rear cavity conducting structure according to claim 3, wherein, The loudspeaker assembly further comprises a voice coil, the voice coil being arranged on the side of the structure hole away from the communication gap.

7. The earphone front-rear cavity conducting structure according to claim 1, wherein, The shell is provided with a communication hole, the communication hole being arranged at the bottom of the shell.

8. The earphone front-rear cavity conducting structure according to claim 1, wherein, The earphone front and rear cavity communication structure further comprises a sound outlet hole, the sound outlet hole being arranged on the shell, and the position of the sound outlet hole corresponding to the position of the first air hole.

9. The earphone front-rear cavity conducting structure according to claim 1, wherein, The number of the second air holes is multiple, and the multiple second air holes are uniformly arranged along the edge of the plastic part, and the first air hole is arranged at the center position of the plastic part.

10. An earphone, characterized by The earphone is applied with the earphone front and rear cavity communication structure according to any one of claims 1 to 9.

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