A tunable miniature transducer

Abstract

This utility model discloses a miniature transducer that is easy to tune, including a first diaphragm, a voice coil, a support, a magnetic circuit assembly, and a tuning element. The magnetic circuit assembly is mounted on the support, and the first diaphragm has a voice coil mounted on it. The edge of the first diaphragm is fixedly connected to the support. An air gap is provided on the magnetic circuit assembly, and the voice coil is inserted into the air gap. The magnetic circuit assembly is annular, and the inner side of the magnetic circuit assembly has a vent hole. The tuning element is disposed in the vent hole. The tuning element has a large-sized open through hole, which connects the air below the first diaphragm and the air outside the miniature transducer. This utility model uses a modular tuning element to achieve the tuning function, avoiding the impact on the molded support. This modular design effectively improves the flexibility of tuning and reduces costs. The combined use of the tuning element, vent duct, vent mesh, vent cotton, second diaphragm, and counterweight can synergistically optimize airflow, thereby improving sound quality and reducing distortion.

Description

Technical Field

[0001] This utility model relates to the field of transducer technology, and in particular to a miniature transducer that is easy to tune. Background Technology

[0002] With the rapid development of consumer electronic devices such as headphones and portable speakers towards miniaturization and high sound quality, the performance of the micro transducer, as a core sound-generating component, directly determines the acoustic performance of the device. Existing micro transducers generally employ a voice coil-driven diaphragm assembly vibration mode, transmitting sound through an acoustic cavity formed by a magnetic circuit assembly and a support structure. The tuning process primarily relies on pre-set vents on the support and a mesh fabric covering those vents, adjusting acoustic parameters by utilizing the airflow of the vents and the damping characteristics of the mesh fabric. However, this tuning method has the following drawbacks: 1. The size and shape of the air holes on the bracket are directly determined by the mold. Once formed, they cannot be flexibly adjusted, which severely limits the tuning range and makes it difficult to adapt to the optimization needs of different frequency bands. In particular, in the mid-to-high frequency range, the sound quality is prone to dryness and high distortion. If the tuning parameters need to be adjusted for different products or sound quality standards, the mold often needs to be redesigned, which not only prolongs the product development cycle but also significantly increases the production cost, resulting in a waste of mold resources; 2. The combination of air holes and mesh in the existing tuning structure can only achieve simple damping adjustment and cannot form a complex acoustic filtering path. It is difficult to effectively suppress the harmonic distortion generated during vibration, which restricts the further improvement of the acoustic performance of the micro transducer. Utility Model Content

[0003] The purpose of this invention is to provide a miniature transducer that is easy to tune, in order to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a miniature transducer that is easy to tune, comprising a first diaphragm, a voice coil, a support, a magnetic circuit assembly, and a tuning element. The magnetic circuit assembly is mounted on the support, the first diaphragm is provided with a voice coil, the edge of the first diaphragm is fixedly connected to the support, the magnetic circuit assembly is provided with an air gap, the voice coil is inserted into the air gap, the magnetic circuit assembly is annular, the inner side of the magnetic circuit assembly is a vent hole, and the tuning element is disposed in the vent hole.

[0005] Preferably, the tuning element is provided with a large-sized open through hole, which connects the air at the lower part of the first diaphragm and the air outside the micro transducer.

[0006] Preferably, the tuning element is provided with at least one vent duct, which connects the air at the lower part of the first diaphragm and the air outside the micro transducer.

[0007] Preferably, the ventilated conduit is a vertical conduit, an inclined conduit, or a curved conduit.

[0008] Preferably, the tuning element is provided with at least one second diaphragm, which isolates the air below the first diaphragm and the air outside the micro transducer. The second diaphragm is a movable thin film.

[0009] Preferably, the second diaphragm is provided with a counterweight, and the counterweight is connected to the second diaphragm by one of the following methods: adhesive bonding, snap-fitting, or detachable connection.

[0010] Preferably, the weight of the counterweight is adjustable.

[0011] Preferably, the tuning element is provided with breathable mesh and / or breathable cotton.

[0012] Preferably, the tuning element is an independent component.

[0013] Preferably, the tuning element and the bracket are connected as an integral structure.

[0014] This utility model provides a miniature transducer that is easy to tune. Its advantages are as follows: This utility model uses modular tuning components to realize the tuning function, avoiding the impact on the molded support. This modular design effectively improves the flexibility of tuning and reduces costs. The combination of tuning components, breathable duct, breathable mesh, breathable cotton, second diaphragm and counterweight can synergistically optimize airflow, thereby improving sound quality and reducing distortion. Attached Figure Description

[0015] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the tuning component of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the tuning component of this utility model from another angle;

[0020] Figure 5 This is a three-dimensional structural diagram of the counterweight component of this utility model.

[0021] In the diagram: 1. First diaphragm; 2. Voice coil; 3. Support; 4. Magnetic circuit assembly; 5. Vent hole; 6. Tuning component; 7. Through hole; 8. Vent duct; 9. Vent mesh; 10. Vent cotton; 11. Second diaphragm; 12. Counterweight. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] Please see the appendix Figure 1 -Appendix Figure 5 This utility model provides an embodiment of a tunable miniature transducer, comprising a first diaphragm 1, a voice coil 2, a support 3, a magnetic circuit assembly 4, and a tuning element 6. The magnetic circuit assembly 4 is mounted on the support 3. The voice coil 2 is mounted on the first diaphragm 1, and the edge of the first diaphragm 1 is fixedly connected to the support 3. An air gap is provided on the magnetic circuit assembly 4, and the voice coil 2 extends into the air gap. The magnetic circuit assembly 4 is annular, and a vent 5 is located on the inner side of the magnetic circuit assembly 4. The tuning element 6 is disposed in the vent 5. The magnetic circuit assembly 4 provides a fixed magnetic field, the voice coil 2 drives the first diaphragm 1 to vibrate and produce sound, the support 3 is used to mount the first diaphragm 1, and the tuning element 6 is used for tuning. The tuning element 6 has a large-sized open through-hole 7, which connects the air below the first diaphragm 1 to the air outside the miniature transducer. At least one ventilated duct 8 is provided, which connects the air below the first diaphragm 1 to the air outside the micro transducer; the ventilated duct 8 can be a vertical duct, an inclined duct, or a curved duct; the tuning component 6 is provided with at least one second diaphragm 11, which isolates the air below the first diaphragm 1 from the air outside the micro transducer, and the second diaphragm 11 is a movable membrane; a counterweight 12 is provided on the second diaphragm 11, and the connection between the counterweight 12 and the second diaphragm 11 can be one of adhesive, snap-fit, or detachable connection; the weight of the counterweight 12 is adjustable; the tuning component 6 is provided with a breathable mesh 9 and / or breathable cotton 10, which have both dustproof and acoustic adjustment functions; the tuning component 6 is an independent component; the tuning component 6 is connected to the support 3 as an integrated structure.

[0024] Working principle: When using this utility model, the magnetic circuit assembly 4 is used to provide a fixed magnetic field. After the voice coil 2 is energized, it moves in the fixed magnetic field, driving the first diaphragm 1 on the bracket 3 to vibrate and produce sound. The vent hole 5 is used to install the tuning component 6. The through hole 7 is used to connect the air at the bottom of the first diaphragm 1 and the air outside the micro transducer. The vent duct 8 is used to connect the air at the bottom of the first diaphragm 1 and the air outside the micro transducer. The vent mesh 9 and the vent cotton 10 have both dustproof and acoustic adjustment functions. The second diaphragm 11 isolates the air at the bottom of the first diaphragm 1 and the air outside the micro transducer. The second diaphragm 11 is used to install the counterweight 12.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tunable miniature transducer, comprising a first diaphragm (1), a voice coil (2), a support (3), a magnetic circuit assembly (4), and a tuning element (6), characterized in that: The magnetic circuit assembly (4) is mounted on the support (3). A voice coil (2) is mounted on the first diaphragm (1). The edge of the first diaphragm (1) is fixedly connected to the support (3). An air gap is provided on the magnetic circuit assembly (4). The voice coil (2) extends into the air gap. The magnetic circuit assembly (4) is annular. A vent hole (5) is located inside the magnetic circuit assembly (4). A tuning element (6) is located in the vent hole (5).

2. The easily tunable miniature transducer according to claim 1, characterized in that: The tuning element (6) is provided with a large-sized open through hole (7), which connects the air at the bottom of the first diaphragm (1) and the air outside the micro transducer.

3. A tunable miniature transducer according to claim 1, characterized in that: The tuning element (6) is provided with at least one vent duct (8), which connects the air at the lower part of the first diaphragm (1) and the air outside the micro transducer.

4. A tunable miniature transducer according to claim 3, characterized in that: The ventilated duct (8) can be a vertical duct, an inclined duct, or a curved duct.

5. A tunable miniature transducer according to claim 1, characterized in that: The tuning element (6) is provided with at least one second diaphragm (11), which isolates the air below the first diaphragm (1) and the air outside the micro transducer. The second diaphragm (11) is a movable thin film.

6. A tunable miniature transducer according to claim 5, characterized in that: The second diaphragm (11) is provided with a counterweight (12), and the counterweight (12) is connected to the second diaphragm (11) by one of the following methods: adhesive bonding, snap-fit ​​bonding, or detachable connection.

7. A tunable miniature transducer according to claim 6, characterized in that: The weight of the counterweight (12) is adjustable.

8. A tunable miniature transducer according to any one of claims 1-7, characterized in that: The tuning component (6) is provided with breathable mesh fabric (9) and / or breathable cotton (10).

9. A tunable miniature transducer according to claim 8, characterized in that: The tuning element (6) is an independent component.

10. A tunable miniature transducer according to claim 8, characterized in that: The tuning component (6) and the bracket (3) are connected as an integral structure.

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