A side-firing dynamic cone loudspeaker

Abstract

The utility model relates to earphone technical field discloses a kind of side sound outlet port moving coil loudspeaker, including shell, magnetic circuit system component, diaphragm component and voice coil are arranged in the shell. The bottom of the shell is provided with circuit board. Among them, the shell includes upper shell and lower shell, the diaphragm component is arranged between the inside of the upper shell and the lower shell position, the cavity formed by the upper shell and the diaphragm component is surrounded to form acoustic cavity, the upper shell includes top surface and side surface, the side surface of the upper shell is provided with sound outlet. By setting sound outlet on the side surface of shell, the core space contradiction faced by traditional front sound outlet loudspeaker in compact audio equipment, especially TWS earphone, is successfully overcome.

Description

Technical Field

[0001] This utility model relates to the field of headphone technology, and in particular to a dynamic driver with a side-outlet sound port. Background Technology

[0002] With the increasing popularity of portable audio devices, especially true wireless stereo (TWS) earphones, users are demanding higher and higher sound quality and battery life from their headphones. To improve sound quality, multi-driver acoustic design has gradually become the mainstream choice for high-end headphones. This involves integrating multiple dedicated drivers (such as tweeters, midrange drivers, and woofers) within a limited cavity space, working together through a crossover system to achieve a wider frequency response and richer sound details.

[0003] Under this design trend, the structural design of the miniature dynamic speaker, as one of the core components, directly affects the internal spatial layout and overall performance of the headphones. Currently, most miniature dynamic speakers on the market adopt a front-facing sound outlet design. This traditional structure means that in order to effectively conduct sound to the headphone's sound outlet and ultimately into the ear, the speaker must be installed in the headphone cavity perpendicular (or nearly perpendicular) to the direction of the sound outlet.

[0004] This vertical assembly method has significant limitations. In products with extremely compact internal spaces, such as TWS earbuds, the vertically stacked assembly structure encroaches on valuable Z-axis (height) space. This space is precisely the critical area for accommodating the earbud battery. Therefore, an irreconcilable spatial competition exists between the traditional front-facing speaker and the large battery. During the design process, compromises are often forced between sound quality and battery life: either sacrificing the performance of the bass unit or abandoning a multi-unit design to gain battery space, or choosing a smaller capacity battery to ensure the integrity of the acoustic structure. Both results in a reduction in the overall battery life of the earbuds.

[0005] Therefore, there is an urgent need in this field for an innovative micro dynamic driver structure that can break through the spatial limitations of traditional vertical assembly and provide a more optimized internal layout for TWS earphones and multi-unit acoustic systems, thereby effectively improving the battery capacity and battery life of the product without sacrificing sound quality. Utility Model Content

[0006] Based on the above, the purpose of this utility model is to provide a side-mounted dynamic driver. The side-mounted design eliminates the need for vertical assembly, thereby minimizing the space occupied in the earphone cavity and reserving more space for multi-unit earphones and TWS earphones.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a side-exit dynamic speaker, including a housing, in which a magnetic circuit system assembly, a diaphragm assembly and a voice coil are disposed, and a circuit board is disposed at the bottom of the housing.

[0008] The housing includes an upper shell and a lower shell. The diaphragm assembly is disposed between the interior of the upper shell and the lower shell. The cavity enclosed by the upper shell and the diaphragm assembly forms a sound cavity. The upper shell includes a top surface and a side surface, and a sound outlet is provided on the side surface of the upper shell.

[0009] Preferably, the sound outlet is a circular sound outlet with a diameter of 0.6 mm to 0.8 mm.

[0010] Preferably, the diameter of the sound outlet is 0.7 mm.

[0011] Preferably, the voice coil is a pure copper voice coil.

[0012] Preferably, the height of the voice coil is 1.3mm to 1.5mm.

[0013] Preferably, the height of the voice coil is 1.4 mm.

[0014] Preferably, the diameter of the voice coil is 2.8 mm to 3.1 mm.

[0015] Preferably, the magnetic circuit system includes a T-iron, an inner magnet, an outer magnet, and a washer; The T-iron includes a base plate and a core column. The inner magnet is disposed inside the core column. The outer magnet is a ring magnet, which is disposed on the base plate and surrounds the core column. The washer is disposed above the outer magnet. The voice coil is connected to the lower part of the diaphragm assembly. A magnetic field cavity is formed between the core column and the outer magnet. The voice coil extends into the magnetic field cavity.

[0016] Preferably, the circuit board is connected to the bottom of the base plate.

[0017] Preferably, the diaphragm assembly includes a diaphragm and a copper ring, the diaphragm being disposed above the copper ring, an installation step being formed between the interiors of the upper shell and the lower shell, and the copper ring being connected below the installation step.

[0018] The beneficial effects of this utility model are as follows: (1) The side-outlet dynamic speaker provided by this utility model successfully overcomes the core space contradiction faced by traditional front-outlet speakers in compact audio devices, especially TWS earphones, by setting the sound outlet on the side of the housing.

[0019] (2) Traditional front-facing sound outlet designs require installation perpendicular to the sound outlet, which greatly occupies the valuable Z-axis (height) space of the earphone cavity. However, the side-facing sound outlet structure of this invention allows the speaker to be installed horizontally or nearly horizontally inside the earphone cavity. This installation method maximizes the release of Z-axis space, making it possible to accommodate a larger capacity battery, thereby fundamentally solving the industry problem of TWS earphones having to compromise between "high-quality multi-unit design" and "long battery life", and achieving a significant improvement in the overall battery life of the product without sacrificing sound quality.

[0020] (3) By adopting a magnetic circuit design that combines inner and outer magnets, and forming a magnetic field cavity with high magnetic flux density between the core column and the outer magnet, and with a pure copper voice coil whose height and diameter have been precisely optimized, the moving coil speaker is ensured to have high sensitivity and excellent control, bringing abundant power and low distortion performance.

[0021] (4) Limiting the diameter of the sound outlet to 0.6mm to 0.8mm (preferably 0.7mm) can ensure smooth sound output while providing appropriate acoustic damping, which helps to smooth the frequency response, suppress unnecessary resonance, and improve the clarity and delicacy of the sound.

[0022] (5) The housing adopts a combination structure of upper and lower shells. The diaphragm assembly is stably installed on the internal mounting steps by copper rings, forming a stable support system. This modular design not only ensures the structural strength and reliability of the speaker itself, but also makes it more convenient and precise to assemble into the headphone unit, which is conducive to improving production efficiency and product consistency. 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 of this utility model 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 content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the structure of a side-outlet moving coil speaker provided in this embodiment of the present invention; Figure 2 A cross-sectional structural schematic diagram of a side-outlet dynamic horn with a concealed diaphragm assembly provided for an embodiment of this utility model; Figure 3 This utility model provides an exploded structural diagram of a side-exit dynamic horn.

[0025] In the picture: 1. Housing; 11. Upper housing; 111. Top surface; 112. Side surface; 113. Sound outlet; 12. Lower housing; 13. Mounting cavity; 14. Sound cavity; 2. Magnetic circuit system components; 21. T-iron; 211. Base plate; 212. Core post; 22. Inner magnet; 23. Outer magnet; 24. Washer; 25. Magnetic field cavity; 3. Diaphragm assembly; 31. Diaphragm; 32. Copper ring; 33. Mounting step; 4. Voice coil; 5. Circuit board. Detailed Implementation

[0026] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between 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.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] like Figures 1 to 3 As shown, this utility model embodiment provides a side-exit dynamic speaker with a 113-shaped sound outlet, including a housing 1. The housing 1 contains a magnetic circuit system assembly 2, a diaphragm assembly 3, and a voice coil 4. A circuit board 5 is located at the bottom of the housing 1. The housing 1 includes an upper shell 11 and a lower shell 12, which are integrally injection molded or assembled by ultrasonic welding or adhesive bonding to form a mounting cavity 13. The diaphragm assembly 3 is positioned within the mounting cavity 13 between the upper shell 11 and the lower shell 12. The cavity enclosed by the upper shell 11 and the diaphragm assembly 3 forms a sound cavity 14. The upper shell 11 includes a generally flat top surface 111 and a surrounding side surface 112. The side surface 112 of the upper shell 11 has a sound outlet 113, which connects the internal cavity to the outside. In this embodiment, when the audio current flows into the voice coil 4 through the circuit board 5, the energized voice coil 4 is subjected to the Lorentz force in the strong magnetic field of the magnetic field cavity 25, which drives the diaphragm assembly 3 to vibrate up and down, pushes the air in the sound cavity 14, and generates sound waves. The sound waves are finally radiated out from the sound outlet 113 on the side 112 of the upper shell 11.

[0031] The side-exit dynamic speaker 113 provided in this embodiment of the invention overcomes the core space constraint faced by traditional front-exit speakers in compact audio devices, especially TWS earphones, by placing the sound outlet 113 on the side 112 of the housing 1. Traditional front-exit designs require installation perpendicular to the sound outlet, significantly occupying valuable Z-axis (height) space within the earphone cavity. The side-exit structure of this invention allows the speaker to be installed horizontally or nearly horizontally within the earphone cavity. This installation method maximizes the release of Z-axis space, making it possible to accommodate larger capacity batteries. This fundamentally solves the industry problem of TWS earphones having to compromise between "high-quality multi-unit design" and "long battery life," achieving a significant improvement in overall battery life without sacrificing sound quality.

[0032] In some embodiments, such as Figure 3 As shown, the sound outlet 113 is a circular sound outlet 113 with a diameter of 0.6mm to 0.8mm. Preferably, the diameter of the sound outlet 113 is 0.7mm. Preferably, the voice coil 4 is a pure copper voice coil 4. This size range, verified through acoustic simulation and testing, can provide optimal acoustic damping characteristics while ensuring sufficient sound pressure output, effectively suppressing high-frequency resonance peaks, resulting in a smoother frequency response curve and improved sound smoothness and detail.

[0033] In some embodiments, such as Figure 3As shown, the height of the voice coil 4 is 1.3mm to 1.5mm. Preferably, the height of the voice coil 4 is 1.4mm. Preferably, the diameter of the voice coil 4 is 2.8mm to 3.1mm. By optimizing the size of the voice coil 4, the sensitivity, power handling capacity, and frequency response characteristics of the speaker can be balanced to meet the needs of products with different sound quality positioning.

[0034] In some embodiments, such as Figures 1 to 3 As shown, the magnetic circuit system includes a T-iron 21, an inner magnet 22, an outer magnet 23, and a washer 24. The T-iron 21 includes a disc-shaped base plate 211 and a cylindrical core column 212 protruding upward from the center of the base plate 211. The inner magnet 22 is cylindrical and disposed inside the core column 212. A blind hole is formed inside the core column 212, and the inner magnet 22 is located within the blind hole. The outer magnet 23 is a ring magnet, disposed on the base plate 211 and surrounding the core column 212. The washer 24 is disposed above the outer magnet 23 and is a ring-shaped magnetic conductive sheet. The voice coil 4 is connected below the diaphragm assembly 3. A ring-shaped magnetic field cavity 25 is formed between the core column 212 and the outer magnet 23, and the voice coil 4 extends into the magnetic field cavity 25. The circuit board 5 is connected below the base plate 211. By employing a magnetic circuit design that combines an inner magnet 22 with an outer magnet 23, and forming a high-flux-density magnetic field cavity 25 between the core post 212 and the outer magnet 23, along with a pure copper voice coil 4 whose height and diameter have been precisely optimized, the dynamic speaker is ensured to have high sensitivity and excellent control, resulting in abundant power and low distortion performance.

[0035] In some embodiments, such as Figure 2 and 3 As shown, the diaphragm assembly 3 includes a diaphragm 31 and a copper ring 32. The diaphragm 31 is positioned above the copper ring 32. A mounting step 33 is formed between the interiors of the upper shell 11 and the lower shell 12, and the copper ring 32 is connected to the lower part of the mounting step 33. The housing 1 adopts a combined structure of the upper shell 11 and the lower shell 12. The diaphragm assembly 3 is stably mounted on the internal mounting step 33 via the copper ring 32, forming a stable support system. This modular design not only ensures the structural strength and reliability of the speaker itself, but also makes it more convenient and precise to assemble into the headphone unit, which is beneficial to improving production efficiency and product consistency.

[0036] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A side-exit moving-coil horn, characterized in that, The device includes a housing, within which a magnetic circuit system assembly, a diaphragm assembly, and a voice coil are disposed, and a circuit board is disposed at the bottom of the housing; The housing includes an upper shell and a lower shell. The diaphragm assembly is disposed between the interior of the upper shell and the lower shell. The cavity enclosed by the upper shell and the diaphragm assembly forms a sound cavity. The upper shell includes a top surface and a side surface, and a sound outlet is provided on the side surface of the upper shell.

2. A side-exit dynamic horn according to claim 1, characterized in that, The sound outlet is circular, and the diameter of the sound outlet is 0.6mm to 0.8mm.

3. A side-exit moving-coil horn according to claim 1, characterized in that, The diameter of the sound outlet is 0.7 mm.

4. A side-exit moving-coil horn according to claim 1, characterized in that, The voice coil is a pure copper voice coil.

5. A side-exit moving-coil horn according to claim 1, characterized in that, The height of the voice coil is 1.3mm to 1.5mm.

6. A side-exit moving-coil horn according to claim 5, characterized in that, The height of the voice coil is 1.4 mm.

7. A side-exit moving-coil horn according to claim 1, characterized in that, The diameter of the voice coil is 2.8 mm to 3.1 mm.

8. A side-exit moving-coil horn according to claim 1, characterized in that, The magnetic circuit system includes a T-iron, an inner magnet, an outer magnet, and a washer; The T-iron includes a base plate and a core column. The inner magnet is disposed inside the core column. The outer magnet is a ring magnet, which is disposed on the base plate and surrounds the core column. The washer is disposed above the outer magnet. The voice coil is connected to the lower part of the diaphragm assembly. A magnetic field cavity is formed between the core column and the outer magnet. The voice coil extends into the magnetic field cavity.

9. A side-exit moving-coil horn according to claim 8, characterized in that, The circuit board is connected to the bottom of the base plate.

10. A side-exit moving-coil horn according to claim 8, characterized in that, The diaphragm assembly includes a diaphragm and a copper ring. The diaphragm is disposed above the copper ring. An installation step is formed between the interiors of the upper shell and the lower shell. The copper ring is connected to the lower part of the installation step.

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