Portable full-frequency sound generating device

Abstract

The invention provides a portable full-frequency sounding device, which comprises a box body, a mid-bass horn, a tweeter and a silencing assembly, the mid-bass horn and the tweeter are both arranged in the box body, the mid-bass horn comprises a mid-bass vibrating diaphragm and a mid-bass dustproof cap, the tweeter is arranged in front of the mid-bass horn, and the silencing assembly is arranged in front of the mid-bass horn. The tweeter and the mid-bass loudspeaker are coaxially arranged, and at least part of the tweeter is located in the groove in front of the mid-bass vibrating diaphragm; the silencing assembly comprises a first sound absorption block and a second sound absorption block, the first sound absorption block is arranged on the side, close to the mid-bass horn, of the tweeter, the second sound absorption block is arranged on the mid-bass dustproof cap, the first sound absorption block is provided with a first inwards-concave face away from the second sound absorption block in a concave mode, and the second sound absorption block is provided with a second inwards-concave face away from the second sound absorption block in a concave mode. The second sound absorption block is provided with a second inner concave face which is concave away from the first sound absorption block, and the first inner concave face and the second inner concave face are oppositely arranged.

Description

Technical Field

[0001] This patent relates to the field of sound-generating equipment technology, specifically to a portable full-frequency sound-generating device. Background Technology

[0002] A sound-producing device is a transducer that converts electrical signals into mechanical vibrations to produce sound, such as loudspeakers and stereos. Full-range speakers are a commonly used type of sound-producing device, favored for their wide frequency coverage and excellent sound performance. A full-range speaker typically requires at least two speakers: a tweeter and a mid-bass driver. The tweeter outputs high frequencies, while the mid-bass driver outputs mid-low frequencies. The tweeter and mid-bass driver are housed separately within the speaker enclosure, usually requiring a large space and affecting the layout of other components. This necessitates a larger enclosure, but increasing the enclosure size hinders miniaturization and portability. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the technical solution of this patent is: a portable full-range sound generating device, including a housing, a mid-bass speaker, a tweeter, and a noise reduction assembly. The mid-bass speaker and the tweeter are both disposed in the housing. The mid-bass speaker includes a mid-bass diaphragm and a mid-bass dust cap. The tweeter is disposed in front of the mid-bass speaker and is coaxially arranged with the mid-bass speaker. The tweeter is at least partially located in a groove in front of the mid-bass diaphragm. The noise reduction assembly includes a first sound-absorbing block and a second sound-absorbing block. The first sound-absorbing block is disposed on the side of the tweeter near the mid-bass speaker. The second sound-absorbing block is disposed on the mid-bass dust cap. The first sound-absorbing block has a first concave surface that is concave away from the second sound-absorbing block. The second sound-absorbing block has a second concave surface that is concave away from the first sound-absorbing block. The first concave surface and the second concave surface are disposed opposite to each other.

[0004] Furthermore, the shape and size of the first concave surface are consistent with the shape and size of the second concave surface.

[0005] Furthermore, both the first concave surface and the second concave surface are spherical concave surfaces.

[0006] Furthermore, both the first concave surface and the second concave surface are conical concave surfaces.

[0007] Furthermore, the tweeter includes a conical bracket with an angle of β, and the mid-bass diaphragm has an angle of α. The angle of β of the conical bracket is smaller than the angle of α of the mid-bass diaphragm.

[0008] Furthermore, the inclination angle β of the tapered support satisfies: 0° < β < 40°.

[0009] Furthermore, the tilt angle β of the tapered support is 20°.

[0010] Furthermore, the tapered bracket is convex; and / or

[0011] The mid-bass diaphragm is recessed.

[0012] Furthermore, the tapered support is recessed; and / or

[0013] The mid-bass diaphragm is designed to bulge outwards.

[0014] Furthermore, the enclosure includes a sound cavity and a grille, the grille being disposed at the opening of the sound cavity; the mid-bass speaker is disposed inside the sound cavity, and the tweeter is disposed on the inner side wall of the grille.

[0015] Furthermore, a sealing ring is provided outside the tweeter, the sealing ring fitting against the inner side of the grille, and the sealing ring abutting against the outer side of the tweeter; and / or

[0016] The acoustic cavity is provided with an installation step, and the mid-bass speaker is installed on the installation step.

[0017] Furthermore, the mid-bass speaker includes a mid-bass diaphragm, a mid-bass voice coil support, a mid-bass voice coil, and a mid-bass magnet assembly. The mid-bass voice coil is wound around the mid-bass voice coil support, and the mid-bass voice coil support is driven to the mid-bass diaphragm. The mid-bass magnet assembly and the mid-bass voice coil generate a magnetic force to drive the mid-bass diaphragm to vibrate and produce sound. A first weight-reducing hole is provided on the mid-bass voice coil support; and / or

[0018] The tweeter includes a tweeter diaphragm, a tweeter voice coil support, a tweeter voice coil, and a tweeter magnet assembly. The tweeter voice coil is wound on the tweeter voice coil support, and the tweeter voice coil support is driven to the tweeter diaphragm. The tweeter magnet assembly and the tweeter voice coil generate a magnetic force to drive the tweeter diaphragm to vibrate and produce sound. A second weight reduction hole is provided on the tweeter voice coil support.

[0019] The beneficial effects achieved by this patent include: the portable full-range sound device includes a cabinet, a mid-bass speaker, a tweeter, and a noise reduction component. The tweeter is located in front of the mid-bass speaker and is coaxially arranged with the mid-bass speaker. The tweeter is partially or entirely located in the groove in front of the mid-bass diaphragm of the conical structure. This allows the space in front of the mid-bass speaker to be used to arrange the tweeter, eliminating the need to set aside a dedicated space in the cabinet for the tweeter. This reduces the space occupied by the mid-bass speaker and tweeter in the cabinet, facilitating the arrangement of other components in the full-range speaker cabinet. Consequently, the speaker cabinet can be made smaller, which is beneficial for miniaturization and enables portable use of the speaker. A first sound-absorbing block is placed on the side of the tweeter closest to the mid-bass speaker, and a second sound-absorbing block is placed on the side of the mid-bass speaker closest to the tweeter. The sound emitted from the center of the mid-bass speaker can be absorbed by the first sound-absorbing block. At the same time, the first sound-absorbing block has a first concave surface that is concave away from the second sound-absorbing block, and the second sound-absorbing block has a second concave surface that is concave away from the first sound-absorbing block. Sound waves that are not absorbed by the first sound-absorbing block can be reflected and absorbed multiple times by the first and second concave surfaces. Ultimately, the sound emitted from the center of the mid-bass speaker is completely absorbed by the first and second sound-absorbing blocks. This can prevent the sound emitted from the center of the mid-bass speaker from being blocked by the tweeter in front, forming standing waves and generating noise that affects the acoustic performance of the portable full-range sound device. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of a portable full-frequency sound generating device according to an embodiment of this patent specification;

[0021] Figure 2 This is a cross-sectional structural diagram of a low-frequency speaker in a portable full-range sound-generating device according to an embodiment of this patent specification.

[0022] Figure 3 This is a cross-sectional structural diagram of a tweeter in a portable full-range sound-generating device according to an embodiment of this patent specification.

[0023] Figure 4 This is a partial structural diagram of the portable full-frequency sound-generating device in the embodiments of this patent specification when the first and second concave surfaces are spherical concave surfaces (arrows indicate the direction of sound wave propagation);

[0024] Figure 5 This is a partial structural diagram of the portable full-frequency sound-generating device in the embodiments of this patent specification when the first and second concave surfaces are conical concave surfaces (arrows indicate the direction of sound wave propagation);

[0025] Figure 6This is a partial structural diagram of the portable full-range sound-generating device in the embodiments of this patent specification, showing the convex conical support and the concave mid-bass diaphragm (arrows indicate the direction of sound wave propagation).

[0026] Figure 7 This is a partial structural diagram of the portable full-range sound-generating device in the embodiments of this patent specification, showing the concave concave cone bracket and the convex mid-bass diaphragm (arrows indicate the direction of sound wave propagation).

[0027] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0028] To facilitate understanding by those skilled in the art, various embodiments of this patent will be described below with reference to text and accompanying drawings. For clarity, many practical details will be explained in the following description. However, it should be understood that these practical details should not be used to limit this patent. That is, in some embodiments of this patent, these practical details are not essential. Furthermore, for ease of understanding, some conventional structures and components will be illustrated in the drawings in a simple schematic manner.

[0029] In the description of this patent, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, 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 patent.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this patent, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this patent, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 patent according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this patent.

[0033] See Figures 1-7 A portable full-range sound generating device includes a housing 1, a mid-bass speaker 2, a tweeter 3, and a noise reduction component 4. The housing 1 is the mounting and support structure for the portable full-range sound generating device. The mid-bass speaker 2, tweeter 3, noise reduction component 4, and other components are all housed inside the housing 1. The various parts of the full-range sound generating device are assembled together through the housing 1 to form an integrated portable full-range sound generating device. The mid-bass speaker 2 includes a mid-bass diaphragm 21 and a mid-bass dust cap 22. The mid-bass diaphragm 21 is a conical structure, and the mid-bass dust cap 22 is located at the center of the inner side of the conical structure. The tweeter 3 is located in front of the mid-bass speaker 2. The tweeter 3 is coaxially arranged with the mid-bass speaker 2, and part or all of the tweeter 3 is located in the groove in front of the mid-bass diaphragm 21 of the conical structure. This allows the space in front of the mid-bass speaker 2 to be used to arrange the tweeter 3, without having to set aside a special space in the enclosure 1 for the tweeter 3. This reduces the space occupied by the mid-bass speaker 2 and tweeter 3 in the enclosure 1, and facilitates the layout of other components of the full-range speaker in the speaker enclosure 1. As a result, the speaker enclosure can be made smaller, which is conducive to the miniaturization of the speaker and enables portable use.

[0034] See Figure 1 , Figure 4 and Figure 5The noise reduction assembly 4 includes a first sound-absorbing block 41 and a second sound-absorbing block 42. The first sound-absorbing block 41 is disposed on the side of the tweeter 3 near the mid-bass speaker 2 and can be fixed to the bottom outer side of the tweeter 3 bracket. The second sound-absorbing block 42 is disposed on the mid-bass dust cap 22 and can be fixed to the mid-bass dust cap 22 or configured as an integral structure with the mid-bass dust cap 22. Therefore, the sound emitted from the center of the mid-bass speaker 2 can be absorbed by the first sound-absorbing block 41 in front. Simultaneously, the first sound-absorbing block 41 has a first concave surface 411 that is concave away from the second sound-absorbing block 42, and the second sound-absorbing block 42 has a second concave surface 421 that is concave away from the first sound-absorbing block 41. The first and second concave surfaces 411 and 421 are positioned opposite each other. Sound waves not absorbed by the first sound-absorbing block 41 can be reflected and absorbed multiple times by the first and second concave surfaces 411 and 421. Ultimately, the sound emitted from the center of the mid-bass speaker 2 is completely absorbed by the first and second sound-absorbing blocks 41 and 42, preventing the sound emitted from the center of the mid-bass speaker 2 from being blocked by the front tweeter 3, thus avoiding standing waves and noise transmission that could affect the acoustic performance of the portable full-range sound-emitting device. Both the first and second sound-absorbing blocks 41 and 42 can be made of soft sound-absorbing materials such as silicone rubber, EVA, and sound-absorbing cotton. The first sound-absorbing block 41 and the second sound-absorbing block 42 are both provided with concave surfaces, which is beneficial for the sound emitted from the center of the mid-bass speaker 2 to be reflected multiple times to fully absorb the sound.

[0035] See Figure 4 and Figure 5 In one embodiment, the shape and size of the first concave surface 411 are consistent with the shape and size of the second concave surface 421. This arrangement can improve the sound absorption effect of the first sound-absorbing block 41 and the second sound-absorbing block 42. Figure 4 Both the first concave surface 411 and the second concave surface 421 are configured as spherical concave surfaces. For example... Figure 5 Both the first concave surface 411 and the second concave surface 421 are configured as conical concave surfaces. Both spherical and conical concave surfaces can absorb and reflect sound emitted from the center of the mid-bass speaker 2, and can be selected as needed.

[0036] See Figure 4 and Figure 5In one embodiment, the tweeter 3 includes a conical support 35 with an angle of β (i.e., the angle between the conical support 35 and the axis of the tweeter 3) and an angle of α (i.e., the angle between the mid-bass diaphragm 21 and the axis of the mid-bass speaker 2). The angle β of the conical support 35 is smaller than the angle α of the mid-bass diaphragm 21, so that the sound waves emitted by the mid-bass diaphragm 21 can fully propagate to the external space, reducing the obstruction of the bass diaphragm 21 by the conical support 35. The angle β of the conical support 35 satisfies: 0° < β < 40°, and the angle β of the conical support 35 is preferably set to 20°. When the angle β of the conical support 35 is 20°, the acoustic effect of the mid-bass speaker 2 is the best. This design of the tweeter conical support 35 ensures the acoustic performance of the mid-bass speaker.

[0037] See Figure 6 In one embodiment, the conical bracket 35 is convex, and / or the mid-bass diaphragm 21 is concave. This arrangement of the conical bracket 35 and / or the mid-bass diaphragm 21 facilitates the forward propagation of sound waves emitted by the mid-bass speaker 2, resulting in a louder sound heard by listeners directly in front of the portable full-range speaker.

[0038] See Figure 7 In one embodiment, the conical support 35 is recessed, and / or the mid-bass diaphragm 21 is convex. This arrangement of the conical support 35 and / or the mid-bass diaphragm 21 facilitates the dispersion of sound waves emitted by the mid-bass speaker 2, allowing more listeners around the portable full-range sound device to hear the sound.

[0039] See Figure 1 In one embodiment, the enclosure 1 includes a sound cavity 11 and a grille 12, with the grille 12 positioned at the opening of the sound cavity 11. A mounting step 111 is provided inside the sound cavity 11, and the mid-bass speaker 2 is disposed within the sound cavity 11 and fixed to the mounting step 111 by positioning posts and screws. The tweeter 3 is adhesively attached to the inner sidewall of the grille 12. The enclosure 1 can be configured as a cylindrical structure or a cubic structure. An airflow hole is provided on one side of the sound cavity 11 to balance the air pressure inside and outside the sound cavity 11.

[0040] See Figure 1In one embodiment, a sealing ring 5 is provided on the outside of the tweeter 3. One side of the sealing ring 5 is attached to the inside of the grille 12 with double-sided adhesive, and the inside of the sealing ring 5 abuts against the outside of the tweeter 3. The outer diameter of the sealing ring 5 is 10mm larger than the outer diameter of the tweeter 3. The addition of the sealing ring 5 increases the reflective surface of the tweeter 5, thereby shifting the frequency response valley of the tweeter 5 forward by approximately 500Hz, ensuring that the decibels of the high and low frequencies are similar when the mid-bass speaker 2 and the tweeter 3 are crossovered. In addition, the sealing ring 5 can further position and fix the tweeter 3 on the grille 12, improving the stability of the tweeter 3 installation. The sealing ring 5 can be made of sealing soft materials such as EVA and silicone.

[0041] See Figure 2 In one embodiment, the mid-bass speaker 2 includes a mid-bass diaphragm 21, a mid-bass voice coil support 23, a mid-bass voice coil 24, a mid-bass magnet assembly 25, and a mid-bass speaker bracket. The mid-bass voice coil 24 is wound around the mid-bass voice coil support 23, and the mid-bass voice coil support 23 is drivenly connected to the mid-bass diaphragm 21. The mid-bass magnet assembly 25 and the mid-bass voice coil 24 generate a magnetic force to drive the mid-bass diaphragm 21 to vibrate on the mid-bass speaker bracket to produce sound. The mid-bass voice coil support 23 is provided with a first weight-reducing hole 231. By providing the first weight-reducing hole 231, the weight of the mid-bass voice coil support 23 can be reduced, thereby reducing the power consumption of the mid-bass speaker 2 during operation.

[0042] See Figure 3 In one embodiment, the tweeter 3 includes a tweeter diaphragm 31, a tweeter voice coil support 32, a tweeter voice coil 33, a tweeter magnet assembly 34, and a tweeter bracket. The tweeter voice coil 33 is wound around the tweeter voice coil support 32. The tweeter voice coil support 32 is drivenly connected to the tweeter diaphragm 31. The tweeter magnet assembly 34 and the tweeter voice coil 33 generate a magnetic force, driving the tweeter diaphragm 31 to vibrate and produce sound on the tweeter bracket. The tweeter voice coil support 32 is provided with a second weight-reducing hole 321. By providing the second weight-reducing hole 321, the weight of the tweeter voice coil support 32 can be reduced, thereby reducing the power consumption of the tweeter 3 during operation.

[0043] Obviously, the above embodiments of this patent are merely examples for clearly illustrating this patent, and are not intended to limit the implementation of this patent. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this patent should be included within the scope of protection of the claims of this patent.

Claims

1. A portable full-frequency sound generating device, characterized in that: The device includes a housing, a mid-bass speaker, a tweeter, and a noise reduction assembly. Both the mid-bass speaker and the tweeter are housed within the housing. The mid-bass speaker includes a mid-bass diaphragm and a mid-bass dust cap. The tweeter is positioned in front of the mid-bass speaker and is coaxially arranged with it. At least a portion of the tweeter is located within a groove in front of the mid-bass diaphragm. The noise reduction assembly includes a first sound-absorbing block and a second sound-absorbing block. The first sound-absorbing block is positioned on the side of the tweeter closest to the mid-bass speaker, and the second sound-absorbing block is positioned on the mid-bass dust cap. The first sound-absorbing block has a first concave surface extending away from the second sound-absorbing block, and the second sound-absorbing block has a second concave surface extending away from the first sound-absorbing block. The first and second concave surfaces are opposite to each other.

2. The portable full-frequency sound generating device according to claim 1, characterized in that: The shape and size of the first concave surface are consistent with the shape and size of the second concave surface.

3. The portable full-frequency sound generating device according to claim 2, characterized in that: Both the first concave surface and the second concave surface are spherical concave surfaces.

4. The portable full-frequency sound generating device according to claim 2, characterized in that: Both the first concave surface and the second concave surface are conical concave surfaces.

5. The portable full-range sound generating device according to any one of claims 1 to 4, characterized in that: The tweeter includes a conical bracket with an angle of β, and the mid-bass diaphragm has an angle of α. The angle of β of the conical bracket is smaller than the angle of α of the mid-bass diaphragm.

6. The portable full-frequency sound generating device according to claim 5, characterized in that: The inclination angle β of the tapered support satisfies: 0° < β < 40°.

7. The portable full-frequency sound generating device according to claim 6, characterized in that: The inclination angle β of the tapered support is 20°.

8. The portable full-frequency sound generating device according to claim 5, characterized in that: The tapered bracket is protruding outwards; and / or The mid-bass diaphragm is recessed.

9. The portable full-frequency sound generating device according to claim 5, characterized in that: The conical support is recessed; and / or The mid-bass diaphragm is designed to bulge outwards.

10. The portable full-frequency sound generating device according to claim 1, characterized in that: The enclosure includes a sound cavity and a grille, with the grille positioned at the opening of the sound cavity; the mid-bass speaker is positioned inside the sound cavity, and the tweeter is positioned on the inner side wall of the grille.

11. The portable full-frequency sound generating device according to claim 10, characterized in that: A sealing ring is provided on the outside of the tweeter, the sealing ring is fitted to the inside of the grille, and the sealing ring abuts against the outside of the tweeter; and / or The acoustic cavity is provided with an installation step, and the mid-bass speaker is installed on the installation step.

12. The portable full-frequency sound generating device according to claim 10, characterized in that: The mid-bass speaker includes a mid-bass diaphragm, a mid-bass voice coil support, a mid-bass voice coil, and a mid-bass magnet assembly. The mid-bass voice coil is wound around the mid-bass voice coil support, which is driven by the mid-bass diaphragm. The mid-bass magnet assembly and the mid-bass voice coil generate a magnetic force to drive the mid-bass diaphragm to vibrate and produce sound. A first weight-reducing hole is provided on the mid-bass voice coil support; and / or The tweeter includes a tweeter diaphragm, a tweeter voice coil support, a tweeter voice coil, and a tweeter magnet assembly. The tweeter voice coil is wound on the tweeter voice coil support, and the tweeter voice coil support is driven to the tweeter diaphragm. The tweeter magnet assembly and the tweeter voice coil generate a magnetic force to drive the tweeter diaphragm to vibrate and produce sound. A second weight reduction hole is provided on the tweeter voice coil support.

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