Loudspeaker device and open earphone
By adopting a dual speaker plus bass tube design in open headphones, the problem of bass enhancement technology being unable to achieve high sound pressure level and low-tuning frequency balance, achieving stronger low-frequency driving capabilities and better sound quality effects.
Patent Information
- Application Number
- CN202421523741.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Existing bass enhancement technologies cannot achieve a balance between high sound pressure levels and low-tuning frequencies in open headphones.
The design of double speakers and bass tubes is adopted. By setting the first and second speakers in the housing and using the air column resonance effect in the bass tubes, the low-frequency sound wave superposition is enhanced, and the tuning holes and tuning networks are combined to adjust the sound cavity air outlet volume and frequency response are optimized.
It achieves improved bass effect without increasing the housing volume, providing higher sound pressure levels and lower tuning frequency, enhanced sound quality effects, and improved low frequency response and sound clarity.
Smart Images
Figure CN223219208U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of audio technology, and more particularly, to a speaker device and an open-earphone. Background Art
[0002] With the development of technology, people's demand for headphones is increasing. Among them, open-back headphones are a new type of headphones that everyone likes. They do not need to be plugged into the ears like traditional headphones, which solves the discomfort caused by long-term wear. Although the open design improves safety and comfort, it also brings challenges in sound quality, especially in bass performance. Due to the structural characteristics of open-back headphones, the bass is often not as strong as closed-back headphones. In order to solve the problem of insufficient bass, a variety of bass enhancement technologies have appeared on the market, including the use of EQ adjustment, bass enhancement tube design, and radiating design, etc., aimed at enhancing the user's low-frequency listening experience. However, these current methods cannot take into account both high SPL (above 95dB) and low harmonic frequency (low frequency starts to attenuate when it dives to 60Hz). Utility Model Content
[0003] The technical problem to be solved by the embodiments of the present application is that the current bass enhancement technology cannot achieve a balance between high SPL and low harmonic frequency.
[0004] In order to solve the above technical problems, the present invention provides a speaker device that adopts the following technical solutions:
[0005] The invention comprises a shell, a first speaker, a second speaker, a bass tube and a tuning hole; the inner cavity of the shell is divided into a front cavity and a sound cavity by a first sealing baffle; the first speaker and the second speaker are arranged in the sound cavity; the tuning hole is arranged on the side of the sound cavity away from the front cavity; a first opening is provided on the top surface adjacent to the side; the bass tube is arranged in the sound cavity and communicated with the first opening.
[0006] Furthermore, the speaker device also includes a second sealing baffle, and the sound cavity is divided into a first sound cavity and a second sound cavity by the second sealing baffle, the first sound cavity is located between the second sound cavity and the front cavity, the first speaker is installed on the first sealing baffle, and the second speaker is installed on the second sealing baffle.
[0007] Furthermore, the first acoustic cavity is completely sealed, the tuning hole is arranged on the side of the second acoustic cavity away from the second acoustic cavity, a first opening is arranged on the top surface adjacent to the side of the first acoustic cavity, and the bass tube is arranged in the second acoustic cavity and connected to the first opening.
[0008] Furthermore, the first speaker and the second speaker are arranged in the same direction, wherein the first speaker is located in the first acoustic cavity and faces the tuning hole, and the second speaker is located in the second acoustic cavity and faces the tuning hole.
[0009] Furthermore, the first speaker and the second speaker are arranged facing each other, wherein the first speaker and the second speaker are both located in the first sound cavity, the first speaker faces away from the tuning hole, and the second speaker faces the tuning hole.
[0010] Furthermore, the first speaker and the second speaker are coaxially arranged.
[0011] Furthermore, the first speaker and the second speaker are both mounted on the first sealing baffle, and the first speaker and the second speaker are both arranged toward the tuning hole.
[0012] Furthermore, the first speaker and the second speaker are connected in parallel.
[0013] Furthermore, the speaker device further includes a tuning net, which is arranged on the inner wall of the side of the sound cavity away from the front cavity and covers the tuning hole.
[0014] In order to solve the above technical problems, the embodiment of the present application further provides an open-ear headset, which adopts the following technical solution:
[0015] The open-back earphone comprises the speaker device as described above.
[0016] Compared with the prior art, this application has the following beneficial effects:
[0017] The present application provides a speaker device, comprising a shell, a first speaker, a second speaker, a bass tube and a tuning hole; the shell is divided into a front cavity and a sound cavity by a first sealing baffle, the first speaker and the second speaker are arranged in the sound cavity, the tuning hole is arranged on the side of the sound cavity away from the front cavity, a first opening is provided on the top surface adjacent to the side, and the bass tube is arranged in the sound cavity and connected to the first opening; the present application can achieve enhanced bass effect through the arrangement of dual speakers and bass tubes, thereby improving the sound quality; secondly, this structural arrangement can provide greater air driving force, overcome the problem of small sound cavity volume, and further improve the sound quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the solutions in this application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0019] Figure 1 is a structural diagram of a speaker device provided in an embodiment of the present application;
[0020] Figure 2 is a structural schematic diagram of a speaker device provided in another embodiment of the present application;
[0021] Figure 3 is a structural diagram of a speaker device provided in another embodiment of the present application;
[0022] Figure 4 Schematic diagram of comparative acoustic curves of the embodiment and comparative example of the present application.
[0023] Reference numerals:
[0024] 1. Shell; 11. Front cavity; 12. Acoustic cavity; 121. First acoustic cavity; 122. Second acoustic cavity; 2. First speaker; 3. Second speaker; 4. Bass tube; 5. Tuning hole; 61. First sealing baffle; 62. Second sealing baffle; 7. Tuning net. DETAILED DESCRIPTION
[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.
[0028] See also Figure 1An embodiment of the present application provides a speaker device, including a shell 1, a first speaker 2, a second speaker 3, a bass tube 4 and a tuning hole 5; the inner cavity of the shell 1 is divided into a front cavity 11 and a sound cavity 12 by a first sealing baffle 61, the first speaker 2 and the second speaker 3 are arranged in the sound cavity 12, the tuning hole 5 is arranged on the side of the sound cavity 12 away from the front cavity 11, a first opening is provided on the top surface adjacent to the side, and the bass tube 4 is arranged in the sound cavity 12 and communicated with the first opening.
[0029] The speaker device of this embodiment adopts a dual-speaker plus bass tube design. The sound pressure level (SPL) generated by the two speaker units (first speaker 2 and second speaker 3) working simultaneously is higher, which can provide a more powerful low-frequency driving capability; the bass tube can use the resonance effect of the air column in the bass tube to enhance the low frequency of a specific frequency. When the speaker vibrates, the air column in the bass tube will also vibrate, generating sound waves with opposite phases to the speaker, thereby achieving the superposition of sound waves at a specific frequency and enhancing the low frequency. Secondly, by adjusting the length and diameter of the bass tube, its resonant frequency can be changed to match the resonant frequency of the speaker, thereby achieving the best low-frequency enhancement effect within the required low-frequency range. Therefore, the coordinated work of the dual speakers and bass tube can achieve a lower resonant frequency and a higher sound pressure level without increasing the volume of the shell, thereby providing a deep and rich bass effect.
[0030] In some embodiments, the first speaker 2 and the second speaker 3 are preferably speakers of the same model to achieve a better low-frequency enhancement effect.
[0031] It should be understood that the first speaker 2 and the second speaker 3 include but are not limited to speakers of the same model, and can be selected according to actual conditions.
[0032] In some embodiments, the speaker device also includes a second sealing baffle 62, and the sound cavity 12 is separated by the second sealing baffle 62 to form a first sound cavity 121 and a second sound cavity 122. The first sound cavity 121 is located between the second sound cavity 122 and the front cavity 11. The first speaker 2 is installed on the first sealing baffle 61, and the second speaker 3 is installed on the second sealing baffle 62.
[0033] The first speaker 2 and the second speaker 3 independently include a speaker base and a speaker body, respectively. The speaker base is fixed on the corresponding sealing baffle to save installation space.
[0034] The first acoustic cavity 121 and the second acoustic cavity 122 are completely isolated acoustic cavities. By dividing the acoustic cavities, the volume of each acoustic cavity can be adjusted more finely, thereby optimizing the low-frequency resonance frequency, enhancing the low-frequency effect, and reducing low-frequency distortion. The acoustic cavity resonance can also be optimized, thereby improving the overall acoustic performance and improving the sound clarity; enhancing the dynamic range of the sound, so that the sound can maintain good sound quality at different volume levels.
[0035] In some embodiments, the first sound cavity 121 is completely sealed, the tuning hole 5 is arranged on the side of the second sound cavity 122 away from the first sound cavity 121, a first opening is provided on the top surface adjacent to the side of the second sound cavity 122, and the bass tube 4 is arranged in the second sound cavity 122 and connected to the first opening.
[0036] The coordination of bass tube 4 and tuning hole 5 allows for effective acoustic tuning in the mid- and low-frequency ranges, altering the acoustic curves in these regions and thereby enhancing the bass effect. Positioning bass tube 4 and tuning hole 5 within second acoustic cavity 122 further optimizes low-frequency response, enhancing low-frequency effects and loudness, resulting in superior sound quality.
[0037] In some embodiments, the first speaker 2 and the second speaker 3 are arranged in the same direction (see Figure 1 ), wherein the first speaker 2 is located in the first acoustic cavity 121 and faces the tuning hole 5, and the second speaker 3 is located in the second acoustic cavity 122 and faces the tuning hole 5.
[0038] Setting the two speakers in the same direction is simple to install, can reduce phase distortion caused by different arrival times of sound waves, reduce sound wave interference, and improve sound quality.
[0039] In another embodiment, Figure 2 As shown, the first speaker 2 and the second speaker 3 are arranged facing each other, wherein the first speaker 2 and the second speaker 3 are both located in the first acoustic cavity 121 , the first speaker 2 faces away from the tuning hole 5 , and the second speaker faces the tuning hole 5 .
[0040] Among them, the first speaker 2 and the second speaker 3 are arranged facing each other, that is, the sound output ends of the two speakers are opposite to each other, which enhances the sense of direction and space of the sound, achieves sound enhancement, and improves the low-frequency and sound quality effects.
[0041] In some embodiments, the first speaker 2 and the second speaker 3 are coaxially arranged; the coaxial arrangement can enhance the coherence of the sound, help create a more uniform and wide sound field, and provide high-quality audio output in a limited space.
[0042] It should be noted that the first speaker 2 and the second speaker 3 are not limited to being coaxially arranged, and can be arranged according to actual conditions.
[0043] See Figure 3 In another embodiment, the first speaker 2 and the second speaker 3 are both mounted on the first sealing baffle 61 , and the first speaker 2 and the second speaker 3 are both disposed toward the tuning hole 5 .
[0044] In this embodiment, the first speaker 2 and the second speaker 3 share the front cavity and the rear cavity, which can increase the effective volume, help improve the low-frequency response and extend the low-frequency lower limit, enhance the bass effect, and at the same time save space, reduce manufacturing costs, and simplify the design.
[0045] In some embodiments, the first speaker 2 and the second speaker 3 are connected in parallel so that the two speakers can work independently.
[0046] In a specific example, the first speaker 2 and the second speaker 3 can be controlled by introducing a frequency division circuit.
[0047] In some embodiments, the speaker device further includes a tuning net 7, which is disposed on the inner wall of the side of the sound cavity 12 away from the front cavity 11 and covers the tuning hole 5. Figures 1 to 3 shown.
[0048] In this embodiment, tuning hole 5 connects acoustic cavity 12 to the outside, adjusting the air volume of first and second speakers 2 and 3, thereby adjusting the bass intensity of the speakers. Tuning meshes 7 of varying densities are applied to the inside of tuning hole 5 to adjust the air volume of acoustic cavity 12. A lower density tuning mesh results in a higher air volume, resulting in a stronger bass.
[0049] As a specific example, the speaker device includes a shell 1, a first speaker 2, a second speaker 3, a bass tube 4, a tuning hole 5 and a tuning net 7. The inner cavity of the shell 1 is divided into a front cavity 11 and a sound cavity 12 by a first sealing baffle 61. The first speaker 2 and the second speaker 3 are both mounted on the first sealing baffle 61, and the first speaker 2 and the second speaker 3 are both arranged toward the tuning hole 5. The tuning hole 5 is arranged on the side of the sound cavity 12 away from the front cavity 11, and a first opening is provided on the top surface adjacent to the side. The bass tube 4 is arranged in the sound cavity 12 and is connected to the first opening, that is, the first speaker 2 and the second speaker 3 are a speaker device design scheme that shares the front cavity and the rear cavity. The corresponding acoustic curve schematic diagram can be seen in FIG. Figure 4 shown.
[0050] Among them, curve a is the acoustic curve of this example, and curve b is the acoustic curve of the comparative example (single speaker plus bass tube speaker device design). As can be seen from the figure, in this example, the low-frequency tuning frequency Fs of the speaker device is 60Hz, and the sound pressure level @SPL is 95dB (-3dB); in the comparative example, the low-frequency tuning frequency Fs of the speaker device is 90Hz, and the sound pressure level @SPL is 95dB (-3dB). It can be concluded that the speaker device of this application can achieve a lower low-frequency tuning frequency Fs of 60Hz, which has a significant improvement in low frequency (for example, Figure 4 60~90Hz frequency band).
[0051] The present application also provides an open-type earphone, which includes the speaker device described above. The external earphone of the present application can be applied to various external earphone application scenarios, such as Bluetooth earphones, Bluetooth glasses, etc.
[0052] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.
Claims
1. A speaker device, characterized in that: The invention comprises a shell, a first speaker, a second speaker, a bass tube and a tuning hole; the inner cavity of the shell is divided into a front cavity and a sound cavity by a first sealing baffle; the first speaker and the second speaker are arranged in the sound cavity; the tuning hole is arranged on the side of the sound cavity away from the front cavity; a first opening is provided on the top surface adjacent to the side; the bass tube is arranged in the sound cavity and communicated with the first opening.
2. The speaker device according to claim 1, characterized in that The speaker device also includes a second sealing baffle, and the sound cavity is divided into a first sound cavity and a second sound cavity by the second sealing baffle. The first sound cavity is located between the second sound cavity and the front cavity. The first speaker is installed on the first sealing baffle, and the second speaker is installed on the second sealing baffle.
3. The speaker device according to claim 2, characterized in that The first acoustic cavity is completely sealed, the tuning hole is arranged on the side of the second acoustic cavity away from the second acoustic cavity, a first opening is arranged on the top surface adjacent to the side of the first acoustic cavity, and the bass tube is arranged in the second acoustic cavity and connected to the first opening.
4. The speaker device according to claim 3, characterized in that The first speaker and the second speaker are arranged in the same direction, wherein the first speaker is located in the first sound cavity and faces the tuning hole, and the second speaker is located in the second sound cavity and faces the tuning hole.
5. The speaker device according to claim 3, characterized in that: The first speaker and the second speaker are arranged to face each other, wherein the first speaker and the second speaker are both located in the first sound cavity, the first speaker faces away from the tuning hole, and the second speaker faces the tuning hole.
6. The speaker device according to claim 4 or 5, characterized in that: The first speaker and the second speaker are coaxially arranged.
7. The speaker device according to claim 1, wherein: The first horn and the second horn are both mounted on the first sealing baffle, and are both disposed toward the tuning hole.
8. The speaker device according to claim 1, wherein: The first speaker and the second speaker are connected in parallel.
9. The speaker device according to claim 1, wherein: The speaker device further includes a tuning net, which is arranged on the inner wall of the side of the sound cavity away from the front cavity and covers the tuning hole.
10. An open-ear headphone, characterized in that: The speaker device comprises the speaker device according to any one of claims 1 to 9.