An ultrathin high-power low-distortion loudspeaker

Abstract

The utility model relates to thin type speaker technical field, concretely relates to a kind of ultrathin high-power low distortion loudspeaker, adopt basin frame, flexible circuit board, diaphragm and the voice coil fixedly connected in diaphragm bottom, flexible circuit board includes outer ring fixed part, located in the inner ring fixed part of outer ring fixed part and interval setting between outer ring fixed part, and at least two cantilever connecting outer ring fixed part and inner ring fixed part, inner ring fixed part electrically connected to the outside wall of voice coil, outer ring fixed part is attached between the top peripheral of basin frame and the bottom peripheral of diaphragm, inner ring fixed part is attached to the bottom of diaphragm.Compared with traditional thin type speaker, adopt the flexible circuit board of special structure, utilize the damping effect of cantilever to limit the vibration amplitude of diaphragm, without additional increase the space occupied by elastic wave, and flexible circuit board avoids the distortion of silk thread swing caused by traditional loudspeaker high power silk thread, while can avoid loudspeaker thin silk thread short circuit problem after silk thread.

Description

Technical Field

[0001] This utility model relates to the field of thin loudspeaker technology, specifically to an ultra-thin, high-power, low-distortion loudspeaker. Background Technology

[0002] This thin loudspeaker features a compact design and extremely low thickness, making it suitable for space-constrained environments. It employs a racetrack-shaped (rectangular with semi-circular ends) diaphragm, voice coil, and magnetic circuit system, distinguishing it from traditional circular designs. It includes a racetrack-shaped frame, independent spider, racetrack-shaped magnetic circuit system, racetrack-shaped voice coil, and diaphragm. Current flowing through the voice coil generates a changing magnetic field, which interacts with the permanent magnet, driving the diaphragm to vibrate and produce sound. The racetrack-shaped design allows the voice coil to be vertically suspended in the magnetic air gap, ensuring linear motion.

[0003] Traditional thin loudspeakers still use nylon wire to connect the voice coil. At high power, the nylon wire swings and can easily cause distortion. In addition, the nylon wire can short-circuit after thinning. Furthermore, if you want to make it even thinner and remove the independent spider, you will not be able to control the vibration amplitude of the diaphragm through damping, which will further cause distortion. Summary of the Invention

[0004] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide an ultra-thin, high-power, low-distortion loudspeaker.

[0005] The objective of this utility model is achieved through the following technical solution: an ultra-thin, high-power, low-distortion loudspeaker, comprising a frame, a flexible circuit board attached to the top periphery of the frame, a diaphragm attached to the top of the flexible circuit board, and a voice coil fixedly connected to the bottom of the diaphragm. The flexible circuit board includes an outer ring fixing part, an inner ring fixing part located inside the outer ring fixing part and spaced apart from the outer ring fixing part, and at least two cantilever arms connecting the outer ring fixing part and the inner ring fixing part. The inner ring fixing part is electrically connected to the outer side wall of the voice coil. The outer ring fixing part is attached between the top periphery of the frame and the bottom periphery of the diaphragm, and the inner ring fixing part is attached to the bottom of the diaphragm.

[0006] Preferably, the diaphragm includes an outer suspension ring, a folded ring, an inner suspension ring, and a diaphragm connected sequentially from the outside to the inside. The outer suspension ring is attached to the top of the outer ring fixing part, the inner ring fixing part is attached to the bottom of the inner suspension ring, and the voice coil is fixedly connected to the bottom of the diaphragm.

[0007] Preferably, the ultra-thin high-power low-distortion loudspeaker further includes a U-shaped iron fixedly connected to the bottom of the frame and extending into the frame, a magnet housed in the inner cavity of the U-shaped iron, and a washer attached to the top of the magnet. There is a flow gap between the outer wall of the magnet and the inner wall of the U-shaped iron, and one end of the voice coil extends into the flow gap.

[0008] Preferably, the sidewall of the voice coil has a plurality of spaced-apart vent holes.

[0009] Preferably, the vent hole is a rounded rectangle.

[0010] Preferably, the diaphragm is a three-layer composite structure, which includes a first carbon fiber layer, a PEEK layer, and a second carbon fiber layer bonded together from top to bottom.

[0011] Preferably, the ultra-thin high-power low-distortion speaker also includes pads attached to the four bottom corners of the speaker frame.

[0012] Preferably, the gasket is an EVA gasket.

[0013] The beneficial effects of this utility model are as follows: The ultra-thin, high-power, low-distortion loudspeaker of this utility model adopts a frame, a flexible circuit board attached to the top periphery of the frame, a diaphragm attached to the top of the flexible circuit board, and a voice coil fixedly connected to the bottom of the diaphragm. The flexible circuit board includes an outer ring fixing part, an inner ring fixing part located inside the outer ring fixing part and spaced apart from it, and at least two cantilever arms connecting the outer ring fixing part and the inner ring fixing part. The inner ring fixing part is electrically connected to the outer wall of the voice coil. The outer ring fixing part is attached between the top periphery of the frame and the bottom periphery of the diaphragm, and the inner ring fixing part is attached to the bottom of the diaphragm. Compared with traditional thin loudspeakers, the flexible circuit board with its special structure uses the damping effect of the cantilever arms to limit the vibration amplitude of the diaphragm, eliminating the need for additional space occupied by the spider. Furthermore, the flexible circuit board avoids the distortion caused by the nylon wire swinging during high-power operation of traditional loudspeakers, and also avoids the problem of short circuits in the nylon wire after the loudspeaker becomes thinner. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is an exploded view of the present invention from another perspective;

[0017] Figure 4 This is a bottom view of the present invention;

[0018] Figure 5 yes Figure 4 Cross-sectional view of AA;

[0019] Figure 6 This is a schematic diagram of the three-layer composite structure of the diaphragm described in this utility model.

[0020] The attached figures are labeled as follows: 1. Basket; 2. Flexible circuit board; 21. Outer ring fixing part; 22. Inner ring fixing part; 23. Cantilever; 3. Diaphragm; 31. Outer ring of suspension edge; 32. Folded ring part; 33. Inner ring of suspension edge; 34. Vibrating plate; 4. Voice coil; 5. U-shaped iron; 6. Magnet; 7. Washer; 8. Flow gap; 9. Vent hole; 10. First carbon fiber layer; 11. PEEK layer; 12. Second carbon fiber layer; 13. Gasket. Detailed Implementation

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0022] like Figure 1-6 As shown, an ultra-thin, high-power, low-distortion loudspeaker includes a frame 1, a flexible circuit board 2 attached to the top periphery of the frame 1, a diaphragm 3 attached to the top of the flexible circuit board 2, and a voice coil 4 fixedly connected to the bottom of the diaphragm 3. The flexible circuit board 2 includes an outer ring fixing part 21, an inner ring fixing part 22 located inside the outer ring fixing part 21 and spaced apart from the outer ring fixing part 21, and at least two cantilever 23 connecting the outer ring fixing part 21 and the inner ring fixing part 22. The inner ring fixing part 22 is electrically connected to the outer side wall of the voice coil 4. The outer ring fixing part 21 is attached between the top periphery of the frame 1 and the bottom periphery of the diaphragm 3, and the inner ring fixing part 22 is attached to the bottom of the diaphragm 3.

[0023] This ultra-thin, high-power, low-distortion loudspeaker, compared to traditional thin loudspeakers, employs a specially structured flexible circuit board 2. The damping effect of the cantilever 23 limits the vibration amplitude of the diaphragm 3, reducing distortion. It eliminates the need for additional space occupied by the spider, and the flexible circuit board 2 avoids the distortion caused by the filament wire swinging during high-power operation in traditional loudspeakers. It also prevents short circuits in the filament wires after the loudspeaker is made thinner. Preferably, there are four cantilever arms 23, distributed in pairs on both sides of the outer ring fixing part 21 and the inner ring fixing part 22.

[0024] Furthermore, the diaphragm 3 includes an outer suspension ring 31, a folded ring 32, an inner suspension ring 33, and a vibrating plate 34 connected sequentially from the outside to the inside. The outer suspension ring 31 is attached to the top of the outer ring fixing part 21, the inner ring fixing part 22 is attached to the bottom of the inner suspension ring 33, and the voice coil 4 is fixedly connected to the bottom of the vibrating plate 34.

[0025] Furthermore, the ultra-thin high-power low-distortion loudspeaker also includes a U-shaped iron 5 fixedly connected to the bottom of the frame 1 and extending into the frame 1, a magnet 6 housed in the inner cavity of the U-shaped iron 5, and a washer 7 attached to the top of the magnet 6. There is a flow gap 8 between the outer side wall of the magnet 6 and the inner side wall of the U-shaped iron 5, and one end of the voice coil 4 extends into the flow gap 8.

[0026] Furthermore, the voice coil 4 has multiple spaced ventilation holes 9 on its sidewall. This ensures balanced airflow inside and outside the voice coil 4, preventing the formation of a closed box inside the voice coil 4 during amplitude vibration, which would cause vibration imbalance. In addition, the racetrack-shaped design of the voice coil 4 helps to improve the power and sensitivity of the loudspeaker.

[0027] Furthermore, the vent 9 is a rounded rectangle, which is more conducive to air circulation and improves the vibration balance effect.

[0028] Furthermore, the diaphragm 3 is a three-layer composite structure, comprising a first carbon fiber layer 10, a PEEK layer 11, and a second carbon fiber layer 12 bonded together from top to bottom. The outer carbon fiber layer provides rigidity, while the middle PEEK layer 11 provides damping, forming a "sandwich" structure that optimizes weight distribution and vibration control, thus helping to reduce phase distortion.

[0029] Furthermore, the ultra-thin high-power low-distortion speaker also includes pads 13 that fit against the four bottom corners of the frame 1. Even further, the pads 13 are EVA pads 13. When this ultra-thin high-power low-distortion speaker is installed in audio equipment, the EVA pads 13, with their soft and elastic cushioning material, prevent resonance and abnormal noise, reduce sound transmission between the speaker and the mounting surface, and optimize the listening experience.

[0030] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this utility model are within the protection scope of this utility model.

Claims

1. An ultra-thin, high-power, low-distortion loudspeaker, characterized in that: The device includes a frame, a flexible circuit board attached to the top periphery of the frame, a diaphragm attached to the top of the flexible circuit board, and a voice coil fixedly connected to the bottom of the diaphragm. The flexible circuit board includes an outer ring fixing part, an inner ring fixing part located inside the outer ring fixing part and spaced apart from the outer ring fixing part, and at least two cantilever arms connecting the outer ring fixing part and the inner ring fixing part. The inner ring fixing part is electrically connected to the outer side wall of the voice coil. The outer ring fixing part is attached between the top periphery of the frame and the bottom periphery of the diaphragm, and the inner ring fixing part is attached to the bottom of the diaphragm.

2. The ultra-thin high-power low-distortion loudspeaker according to claim 1, characterized in that: The diaphragm includes an outer suspension ring, a folded ring, an inner suspension ring, and a diaphragm, which are connected sequentially from the outside to the inside. The outer suspension ring is attached to the top of the outer ring fixing part, the inner ring fixing part is attached to the bottom of the inner suspension ring part, and the voice coil is fixedly connected to the bottom of the diaphragm.

3. The ultra-thin high-power low-distortion loudspeaker according to claim 1, characterized in that: The ultra-thin high-power low-distortion loudspeaker also includes a U-shaped iron fixedly connected to the bottom of the frame and extending into the frame, a magnet housed in the inner cavity of the U-shaped iron, and a washer attached to the top of the magnet. There is a flow gap between the outer wall of the magnet and the inner wall of the U-shaped iron, and one end of the voice coil extends into the flow gap.

4. The ultra-thin high-power low-distortion loudspeaker according to claim 1, characterized in that: The voice coil has multiple spaced vent holes on its sidewall.

5. The ultra-thin high-power low-distortion loudspeaker according to claim 4, characterized in that: The vent holes are rounded rectangles.

6. The ultra-thin high-power low-distortion loudspeaker according to claim 1, characterized in that: The diaphragm is a three-layer composite structure, which includes a first carbon fiber layer, a PEEK layer and a second carbon fiber layer bonded together from top to bottom.

7. The ultra-thin high-power low-distortion loudspeaker according to claim 1, characterized in that: The ultra-thin, high-power, low-distortion speaker also includes pads that fit against the four bottom corners of the speaker frame.

8. The ultra-thin high-power low-distortion loudspeaker according to claim 7, characterized in that: The gasket is an EVA gasket.

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