A loudspeaker with bass powder and high-low tone shared front cavity

Abstract

The utility model relates to a kind of loudspeaker of high-low tone shared front cavity with BASS powder, including front cover and back cover, the front cover and back cover buckle formation cavity;The cavity is provided with high pitch unit and bass unit, the sound side of the high pitch unit and bass unit is jointly communicated to a shared front cavity;The cavity is also provided with BASS powder unit, the BASS powder unit is set to the side of bass unit away from high pitch unit;BASS powder unit is sealed and covered with cover plate;The front cover is provided with powder filling hole, and the powder filling hole is communicated with BASS powder unit.The utility model effectively solves the contradiction between the traditional loudspeaker in enhancing bass, miniaturization, cost control and keeping sound quality balance, and is a kind of high-performance, small size, simple structure, cost-effective loudspeaker solution.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and in particular to a loudspeaker with a shared front cavity for high and low frequencies, which incorporates BASS powder. Background Technology

[0002] In the field of electroacoustic devices, dual-unit loudspeaker systems (typically consisting of independent tweeters and woofers) are the mainstream design solution for achieving wide-bandwidth sound quality. These systems generally employ a physical chamber structure, meaning that the front chambers of the tweeter and woofer are strictly isolated through partitions, seals, or independent chambers. The core purpose of this design is:

[0003] 1. Avoid acoustic interference: Prevent the large amplitude vibration of the bass unit from modulating high-frequency sound waves, which could lead to high-frequency distortion;

[0004] 2. Suppress airflow coupling: Block the impact of rearward sound waves from the bass unit on the tweeter diaphragm.

[0005] However, the physical cavity splitting scheme has significant drawbacks:

[0006] A. Increased volume and cost: The isolation structure requires additional space (increasing the cavity volume by approximately 15%-30%), and the partitions and sealing components need to be manufactured using precision molds, leading to increased material costs and assembly complexity;

[0007] B. Impaired sound field consistency: The cavity design creates a physical distance between high and low frequency sound sources, which disrupts the point source effect and affects the accuracy of sound image positioning (typical problems include abnormal separation between human voices and musical instruments).

[0008] In pursuit of miniaturization, ordinary full-range loudspeakers use a single driver unit instead of a crossover design. While this simplifies the structure, it is limited by physical laws, such as:

[0009] Insufficient bass extension: The small-sized diaphragm cannot effectively move air, resulting in a sharp decrease in response in the frequency range below 80Hz;

[0010] High-frequency distortion is prominent: In order to extend the low frequency, the edge of the diaphragm needs to be designed to be flexible, but this will excite the split vibration, generating a resonance peak in the >5kHz frequency band, resulting in a "metallic" sound. Summary of the Invention

[0011] The technical problem to be solved by this utility model is to provide a loudspeaker with a shared front cavity for high and low frequencies by adding BASS powder, which effectively solves the contradiction between enhancing bass, miniaturization, cost control and maintaining sound quality balance in traditional loudspeakers. It is a high-performance, small-size, simple-structure and cost-effective loudspeaker solution.

[0012] The technical solution adopted by this utility model to solve its technical problem is as follows: a loudspeaker with a shared front cavity for high and low frequencies using BASS powder, comprising a front cover and a rear cover, wherein the front cover and the rear cover are fastened together to form a cavity; a tweeter and a woofer are disposed within the cavity, and the sound-emitting sides of the tweeter and the woofer are connected to a shared front cavity; a BASS powder unit is also disposed within the cavity, wherein the BASS powder unit is disposed on the side of the woofer away from the tweeter; the BASS powder unit is sealed and covered by a cover plate; a powder filling hole is provided on the front cover, and the powder filling hole is connected to the BASS powder unit.

[0013] Furthermore, the BASS powder unit of this utility model includes a powder box, in which BASS powder is placed.

[0014] Furthermore, the shared front cavity structure of this utility model is as follows: a bass sound outlet channel is provided between the bass driver and the first steel plate provided on the front cover; a second steel plate is provided between the tweeter and the front cover; and a tweeter sound outlet channel is provided between the tweeter and the second steel plate; the tweeter sound outlet channel and the bass sound outlet channel are respectively located on both sides of the second steel plate.

[0015] Furthermore, the powder filling hole of this utility model is provided with a removable sealing cap.

[0016] The beneficial effect of this utility model is that it solves the defects existing in the background technology.

[0017] 1. Significantly enhances low-frequency performance: The addition of specially formulated BASS powder can specifically improve magnetic circuit efficiency, optimize the rigidity and damping characteristics of the diaphragm, and effectively enhance the power, depth and extension of the low-frequency response, making the bass more powerful and impactful.

[0018] 2. Compact structure and space saving: The design utilizes a shared front cavity for both high and low frequency drivers, eliminating the physical partitions or independent chamber structures used in traditional crossover loudspeakers to isolate high and low frequencies. This greatly simplifies the acoustic structure at the front of the loudspeaker, significantly reducing the total space required for the front cavity, making the entire loudspeaker system more compact and smaller. This is particularly advantageous for applications with strict space constraints, such as portable devices, ultra-thin televisions, and soundbars.

[0019] 3. Simplified design and manufacturing, reducing costs: The shared front cavity design reduces internal partitions, seals, and other components, simplifying the structural design of the frame or housing, and lowering mold complexity and assembly difficulty. This directly leads to lower production costs and improved manufacturing efficiency.

[0020] 4. Maintain good high-frequency clarity: Although the high and low frequency units share the front cavity, through a carefully designed unit layout, targeted application of BASS powder (to avoid interference with the magnetic circuit of the high frequency unit), and possible acoustic optimizations (such as the shape of the shared front cavity, internal damping treatment, etc.), the adverse effects of the large amplitude movement of the low frequency unit on the modulation and absorption of high frequency sound waves can be effectively suppressed, ensuring that the high frequency is still clear, bright and rich in detail, and achieving good compatibility between high and low frequencies.

[0021] 5. Expanding application scenarios: Combining excellent low-frequency performance and miniaturized design, this speaker can meet the needs of various electronic products that have high requirements for sound quality (especially bass) while being sensitive to size and cost, and has broad application prospects.

[0022] 6. Improved acoustic efficiency: The addition of BASS powder improves magnetic energy utilization and diaphragm performance, which helps to improve the overall sensitivity of the loudspeaker and obtain a greater sound pressure output at the same input power. Attached Figure Description

[0023] Figure 1 This is an exploded view of the structure of this utility model;

[0024] Figure 2 This is a structural cross-sectional view of the present invention;

[0025] In the diagram: 1. Front cover; 2. Rear cover; 3. Tweeter; 4. Woofer; 5. Bass powder unit; 6. Cover plate; 7. Powder filling hole; 8. First steel plate; 9. Second steel plate; 10. Woofer output channel; 11. Tweeter output channel. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] like Figures 1-2 The speaker shown is a speaker with a shared front cavity for high and low frequencies, which enhances the high-frequency effect by sharing the front cavity and enhances the low-frequency effect by adding BASS powder. The specific structure includes: a front cover 1 and a rear cover 2, which are fastened together to form a cavity, providing mechanical support and an acoustically sealed environment to prevent acoustic short circuits.

[0028] The cavity houses a tweeter 3 and a woofer 4, whose sound-emitting sides are connected to a common front cavity. The common front cavity is structured such that a woofer 4 has a woofer outlet channel 10 between it and a first steel plate 8 on the front cover 1, and a tweeter 3 has a tweeter outlet channel 11 between it and the front cover 1. The tweeter 3 and the second steel plate 9 are located on opposite sides of the second steel plate 9. Figure 2 As shown, the front end of the bass output channel is located above the treble output channel, and the bass and treble output channels share a cavity space within the cavity formed by the front and rear covers to produce sound. Figure 2 The direction of the arrow in the diagram indicates the direction of sound output.

[0029] The design utilizes a shared front cavity for both the high and low frequency drivers, eliminating the physical partitions or separate chamber structures used in traditional crossover loudspeakers to isolate high and low frequencies. This greatly simplifies the acoustic structure at the front of the loudspeaker, significantly reduces the total space required for the front cavity, and makes the entire loudspeaker system more compact and smaller. This is particularly beneficial for applications with strict space constraints, such as portable devices, ultra-thin televisions, and soundbars.

[0030] The cavity also houses a BASS powder unit 5, which includes a powder box containing BASS powder. The BASS powder unit 5 is located on the side of the woofer 4 furthest from the tweeter 3. The BASS powder unit 5 is sealed with a cover plate 6. A powder filling hole 7 is provided on the front cover 1, communicating with the BASS powder unit 5. A removable sealing cap is provided on the surface of the powder filling hole 7. Adding specially formulated BASS powder can specifically improve magnetic circuit efficiency, optimize the rigidity and damping characteristics of the diaphragm, and effectively enhance the power, depth, and bass extension of the low-frequency response, making the bass more powerful and impactful. The addition of BASS powder improves magnetic energy utilization and diaphragm performance, helping to increase the overall sensitivity of the speaker and achieve a greater sound pressure output at the same input power.

[0031] The above description is only a specific embodiment of the present utility model. Various examples and illustrations do not constitute a limitation on the substantive content of the present utility model. Those skilled in the art can make modifications or variations to the above-described specific embodiments after reading the description without departing from the essence and scope of the utility model.

Claims

1. A loudspeaker with a shared front cavity for high and low frequencies, comprising a front cover (1) and a rear cover (2), wherein the front cover (1) and the rear cover (2) are fastened together to form a cavity; characterized in that: The cavity contains a tweeter (3) and a woofer (4), the sound-emitting sides of which are connected to a common front cavity; the cavity also contains a BASS powder unit (5), which is located on the side of the woofer (4) away from the tweeter (3); the BASS powder unit (5) is sealed and covered by a cover plate (6); the front cover (1) has a powder filling hole (7), which is connected to the BASS powder unit (5).

2. A loudspeaker with a shared front cavity for high and low frequencies using added BASS powder as described in claim 1, characterized in that: The BASS powder unit (5) includes a powder box containing BASS powder.

3. A loudspeaker with a shared front cavity for high and low frequencies using added BASS powder as described in claim 1, characterized in that: The structure of the shared front cavity is as follows: a bass output channel (10) is provided between the bass driver (4) and the first steel plate (8) provided on the front cover (1); a second steel plate (9) is provided between the tweeter (3) and the front cover (1); a tweeter output channel (11) is provided between the tweeter (3) and the second steel plate (9); the tweeter output channel (11) and the bass output channel (10) are respectively located on both sides of the second steel plate (9).

4. A loudspeaker with a shared front cavity for high and low frequencies, as described in claim 1, characterized in that: The powder filling hole (7) is provided with a removable sealing cap.

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