Sound box

Abstract

The embodiment of the invention discloses a sound box, a woofer and a tweeter of the sound box are coaxially arranged, a panel is divided into a first area and a second area arranged on the outer side of the first area, a tweeter sound outlet hole is formed in the first area, a bass sound outlet hole is formed in the second area, and the tweeter is installed on the panel and is opposite to the tweeter sound outlet hole. Therefore, an extra support structure does not need to be arranged to install the tweeter in the center of the woofer, sound emitted by the tweeter installed on the panel is directly transmitted out of the sound box through the tweeter sound outlet hole, and the woofer is transmitted out of the sound box through the woofer sound outlet hole. The panel effectively isolates the rear lobe of the high pitch from radiating backwards, prevents the rear lobe of the high pitch from being reflected by the inner wall of the shell, and facilitates the reduction of interference, thereby improving the sound production effect of the sound box.

Description

Technical Field

[0001] The present invention relates to the technical field of acoustic equipment, and more specifically, to a sound box. Background Art

[0002] With the development of science and technology and the improvement of people's living standards, there are more and more types of devices used to play audio files, among which speakers are a commonly used audio playback device. Traditional speakers are composed of tweeters and woofers arranged side by side in the box. Since the tweeters and woofers sound at different positions, the speakers give people a poor sense of hearing. The emergence of coaxial speakers solves the problem of different point sound sources. Coaxial speakers install tweeters and woofers on the same central axis to make high and low frequencies emit from approximately one point. The sound centers of high and low frequencies are relatively consistent, and the auditory effect is better. Existing coaxial speakers often use a bracket to install the tweeter on the axis of the woofer. However, the rear lobe of the high-frequency sound wave radiation of the tweeter is reflected by the woofer diaphragm or the shell, and interferes with the front lobe, affecting the sound quality of the speaker. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a speaker, which is conducive to solving at least part of the above problems existing in the prior art.

[0004] A speaker provided in an embodiment of the present invention comprises a shell, a panel, a tweeter and a woofer; the shell has a containing cavity, the containing cavity has an opening; a panel is arranged at the opening, the panel has a tweeter sound outlet and a woofer sound outlet, the panel has a first area and a second area, the second area is arranged on the outside of the first area, the tweeter sound outlet is arranged in the first area, and the woofer sound outlet is arranged in the second area; the tweeter is installed on the panel, the diaphragm of the tweeter is opposite to the tweeter sound outlet; the woofer is arranged in the containing cavity and coaxially with the tweeter, the diaphragm of the woofer and the tweeter have a sound outlet gap between them, and the sound outlet gap is connected to the woofer sound outlet.

[0005] Furthermore, a transition area is provided between the first area and the second area, the tweeter has a first mounting structure, and the tweeter is detachably connected to the transition area via the first mounting structure.

[0006] Furthermore, the transition region is a solid structure surrounding the first region.

[0007] Furthermore, the tweeter has a tweeter speaker unit and a shell covering the tweeter speaker unit, the shell is connected to the transition area and a sealing structure is provided between the shell and the transition area.

[0008] Furthermore, the number of the bass sound outlet holes is multiple, and / or the number of the treble sound outlet holes is multiple.

[0009] Furthermore, a speaker mounting structure is provided in the accommodating cavity, and the bass speaker is connected to the speaker mounting structure.

[0010] Furthermore, the sound box also includes a bracket connected to the shell and opposite to the panel, the bracket has a woofer mounting hole, and the woofer is mounted in the woofer mounting hole.

[0011] Furthermore, the speaker box also includes a control circuit board, which is arranged in the accommodating cavity and located on the side of the bracket opposite to the tweeter. The bracket has a wire passing hole, and the connecting line between the tweeter and the control circuit board passes through the wire passing hole.

[0012] Furthermore, the second area is annular or arc-shaped.

[0013] Furthermore, the speaker also includes a control circuit, which includes a frequency division circuit, a high-frequency processing circuit and a low-frequency processing circuit, the high-frequency processing circuit is electrically connected to the tweeter, and the low-frequency processing circuit is electrically connected to the woofer; the frequency division circuit is configured to divide the received audio signal into a high-frequency signal and a low-frequency signal, and input the high-frequency signal into the high-frequency processing circuit, and input the low-frequency signal into the low-frequency processing circuit; the high-frequency processing circuit includes a high-frequency digital signal processing module and a high-frequency signal amplification module arranged in sequence, and the low-frequency processing circuit includes a low-frequency digital signal processing module and a low-frequency signal amplification module arranged in sequence.

[0014] An embodiment of the present invention provides a speaker box, in which the woofer and tweeter of the speaker box are coaxially arranged, and a panel is divided into a first area and a second area arranged outside the first area, a tweeter sound outlet hole is opened in the first area, and a bass sound outlet hole is opened in the second area, and the tweeter is installed on the panel and opposite to the tweeter sound outlet hole. Therefore, there is no need to set an additional bracket structure to install the tweeter in the center of the woofer, and the sound emitted by the tweeter installed on the panel is directly transmitted to the speaker box through the tweeter sound outlet hole, and the sound emitted by the woofer is transmitted to the speaker box through the bass sound outlet hole. Since the tweeter is installed on the panel, the panel effectively isolates the rear lobe of the tweeter from radiating backwards, thereby avoiding the situation where the rear lobe of the tweeter is reflected by the inner wall of the shell, which is beneficial to reducing interference, thereby improving the sound effect of the speaker box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0016] Figure 1is a schematic diagram of the stereoscopic structure of a speaker according to a first embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of the three-dimensional structure of a speaker according to a second embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of the internal structure of a speaker according to a third embodiment of the present invention;

[0019] Figure 4 is a schematic diagram of the internal structure of a speaker according to a fourth embodiment of the present invention;

[0020] Figure 5 is a schematic structural block diagram of a speaker according to an embodiment of the present invention;

[0021] Figure 6 is a frequency response curve diagram of a speaker of a comparative example of the present invention;

[0022] Figure 7 4 is a frequency response curve diagram of the speaker of the embodiment of the present invention.

[0023] Description of reference numerals:

[0024] 1-shell; 11-accommodating cavity; 12-sound outlet gap; 13-speaker mounting structure; 2-panel; 21-treble sound outlet hole; 22-bass sound outlet hole; 23-first area; 24-second area; 25-transition area; 3-tweeter; 31-shell; 32-tweeter speaker unit; 4-bass speaker; 5-bracket; 51-bass speaker mounting hole; 52-wire hole; 6-control circuit board; 7-connecting line; 8-control circuit; 81-frequency division circuit; 82-high frequency processing circuit; 821-high frequency digital signal processing module; 822-high frequency signal amplification module; 83-low frequency processing circuit; 831-low frequency digital signal processing module; 832-low frequency signal amplification module. DETAILED DESCRIPTION

[0025] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0026] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0027] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0028] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0029] Figure 1-Figure 4 Schematic diagram of the structure of the speaker of several different embodiments of the present invention. Figure 1-Figure 4 The speaker of the embodiment of the present invention comprises a housing 1, a panel 2, a tweeter 3 and a woofer 4. The housing 1 has a receiving cavity 11, one side of the receiving cavity 11 has an opening, and the panel 2 is arranged to cover the opening. Figure 3 and Figure 4 As shown, the tweeter 3 and the woofer 4 are arranged substantially along the same axis, and the tweeter 3 is located in front of the diaphragm of the woofer 4. The sound box further includes a control circuit board 6, which is arranged in the accommodating cavity 11 and is electrically connected to the tweeter 3 and the woofer 4 to control the tweeter 3 and the woofer 4 to produce sound.

[0030] Reference Figure 1 and Figure 2The panel 2 has a first area 23 and a second area 24, the second area 24 is arranged outside the first area 23, a bass sound outlet hole 22 is opened in the first area 23, and a treble sound outlet hole 21 is opened in the second area 24, so that two spaced sound outlet channels are formed on the panel 2. Among them, the bass sound outlet hole 22 is used for the sound waves emitted by the woofer 4 to radiate outward, and the treble sound outlet hole 21 is used for the sound waves emitted by the tweeter 3 to radiate outward. In the embodiment of the present invention, "treble" and "bass" are relative, that is, the sound emitted by the tweeter 3 has a higher frequency range than that of the woofer 4. There is a sound outlet gap 12 between the diaphragm of the woofer 4 and the tweeter 3, and the tweeter 3 has a smaller size than the woofer 4, so that the sound waves radiated by the woofer 4 to the front will not be completely blocked by the woofer 4. In this embodiment, the tweeter 3 is installed on the panel 2, and the diaphragm of the tweeter 3 is opposite to the treble sound outlet hole 21, and the sound waves emitted by the tweeter 3 are transmitted out of the speaker box from the treble sound outlet hole 21. The woofer 4 is disposed in the accommodating cavity 11, and the sound outlet gap 12 between the diaphragm of the woofer 4 and the tweeter 3 is connected to the bass sound outlet hole 22. The sound waves generated when the diaphragm of the woofer 4 vibrates are radiated to the outside of the sound box through the sound outlet gap 12 and the bass sound outlet hole 22. With this design, the high-frequency sound waves and low-frequency sound waves of the sound box are respectively transmitted to the outside of the sound box through different channels, which can avoid the interference of low-frequency sound waves with high-frequency sound waves, and ensure the sound quality of the coaxial sound box.

[0031] Reference Figure 1 and Figure 2Optionally, there is a transition area 25 between the first area 23 and the second area 24, and the transition area 25 can be a physical structure without a hole. In this embodiment, the transition area 25 is a physical structure surrounding the first area 23, and the tweeter 3 can be installed on the transition area 25 to facilitate the firm installation of the tweeter 3. Optionally, the tweeter 3 has a first mounting structure, and the tweeter 3 is detachably connected to the transition area 25 through the first mounting structure. The first mounting structure can be a buckle, a connecting hole, a slot or other structure suitable for mounting the tweeter 3 on the panel 2, which can be arbitrarily selected according to actual needs. For example, the tweeter 3 includes a tweeter unit 32 and a housing 31 covered outside the tweeter unit 32. The first mounting structure can be a connecting hole set on the housing 31 of the tweeter 3. The transition area 25 has a threaded hole, and the tweeter 3 can be fixed to the panel 2 by screws passing through the first mounting structure and the threaded hole on the transition area 25 of the panel 2. Optionally, the tweeter 3 can be fixed on the side of the panel 2 facing the accommodating cavity 11, which is beneficial to the protection of the tweeter 3. Further optionally, a sealing structure is provided between the housing 31 and the transition area 25, and the sealing structure surrounds the outer side of the housing 31 of the tweeter 3, which not only improves the waterproof effect but also has a certain sealing effect on the sound outlet channel of the tweeter 3, avoids air leakage, prevents the tweeter 3 from reflecting sound waves into the housing 1, reduces interference, and thus ensures the sound quality of the speaker. The sealing structure can be a rubber sealing ring, a composite sealing ring, a hot melt adhesive, a polyurethane sealant, an acrylic sealant or other sealing structures.

[0032] The outline of the first area 23 can be circular, square, fan-shaped or other shapes, which can be selected according to the shape of the tweeter 3 and the design requirements of the speaker. The number of the tweeter sound holes 21 can be one or more, which can be arbitrarily selected according to actual needs, and the embodiment of the present invention does not limit this. In one embodiment, refer to Figure 2 , the number of the tweeter sound hole 21 is one, and the size of the tweeter sound hole 21 can be substantially the same as the size of the diaphragm of the tweeter 3. When the tweeter 3 is installed, the diaphragm of the tweeter 3 is aligned with the tweeter sound hole 21, so that the high-frequency sound waves emitted by the tweeter 3 can be smoothly transmitted from the tweeter sound hole 21. In another embodiment, referring to Figure 1 and Figure 4 The number of tweeter sound holes 21 is multiple. For example, a plurality of tweeter sound holes 21 having an area smaller than that of the diaphragm of the tweeter 3 can be arranged in the first region 23, and the area covered by the plurality of tweeter sound holes 21 corresponds to the diaphragm of the tweeter 3.

[0033] The second area 24 can be a ring, arc or other shape surrounding the first area 23, and can be selected according to the shape of the woofer 4 and the design requirements of the speaker. The number of the bass sound outlet 22 can be one or more, and can be arbitrarily selected according to actual needs, and the embodiment of the present invention does not limit this. In one embodiment, refer to Figure 1 , the number of the bass sound outlet hole 22 is one, and the bass sound outlet hole 22 may be arc-shaped and surround the outer side of the first area 23. In another embodiment, referring to Figure 2 The number of the bass sound outlet holes 22 is multiple. For example, a plurality of smaller bass sound outlet holes 22 can be arranged in the second area 24 to form a bass sound outlet hole 22 matrix.

[0034] The bass speaker 4 is detachably mounted in the accommodating chamber 11. Figure 4 A speaker mounting structure 13 is provided in the accommodating cavity 11, and the woofer 4 is connected to the speaker mounting structure 13. The specific form of the speaker mounting structure 13 can be selected according to the structure of the woofer 4. For example, the speaker mounting structure 13 and the woofer 4 can be connected by snap connection, screw connection, plug connection, magnetic connection or other feasible connection methods. For example, the speaker mounting structure 13 can be a boss with a threaded hole, and the woofer 4 can be locked on the boss by screws.

[0035] In one embodiment, referring to Figure 3 The speaker box further includes a bracket 5, which is connected to the housing 1 and is opposite to the panel 2. The bracket 5 has a woofer mounting hole 51, and the woofer mounting hole 51 matches the size of the woofer 4. The woofer 4 is mounted in the woofer mounting hole 51, and the woofer 4 can be relatively fixed between the bracket 5 and the housing 1. Optionally, the bracket 5 and the housing 1 can be detachably connected, for example, by snap connection, screw connection or other detachable connection methods, which is convenient for assembly and maintenance of the speaker box.

[0036] Optionally, the bracket 5 can also play a role in spatially separating the accommodating cavity 11. In one embodiment, the bracket 5 divides the accommodating cavity 11 into a front cavity close to the opening and a rear cavity away from the opening, and the control circuit board 6 is located on the side of the bracket 5 opposite to the tweeter 3, that is, the control circuit board 6 is located in the rear cavity. A wire passing hole 52 is provided on the bracket 5, and the connecting line 7 between the tweeter 3 and the control circuit board 6 passes through the wire passing hole 52. The shape of the bracket 5 can match the opening, and after the bracket 5 is installed on the shell 1, the rear cavity forms a relatively closed cavity, which is conducive to waterproof design. A sealing ring, sealant or other forms of sealing structure can also be set between the bracket 5 and the shell 1 to enhance the waterproof effect.

[0037] The speaker box further includes a control circuit 8, which is electrically connected to the tweeter 3 and the woofer 4, respectively, to control the tweeter 3 and the woofer 4 to produce sound. Figure 5 The control circuit 8 includes a frequency division circuit 81, a high frequency processing circuit 82 and a low frequency processing circuit 83. The frequency division circuit 81 receives an audio signal, which is a digital signal. The frequency division circuit 81 divides the received digital signal into a high frequency signal and a low frequency signal according to a preset frequency division point, and inputs the high frequency signal into the high frequency processing circuit 82, and inputs the low frequency signal into the low frequency processing circuit 83. The high frequency processing circuit 82 is electrically connected to the tweeter 3 for processing the high frequency signal; the low frequency processing circuit 83 is electrically connected to the woofer 4 for processing the low frequency signal. The high frequency processing circuit 82 includes a high frequency digital signal processing module 821 and a high frequency signal amplification module 822 arranged in sequence, and the low frequency processing circuit 83 includes a low frequency digital signal processing module 831 and a low frequency signal amplification module 832 arranged in sequence. The high-frequency digital signal processing module 821 and the low-frequency digital signal processing module 831 may include an audio equalizer (EQ), a multi-band dynamic range compressor (MBDRC), a limiter, etc., respectively. The high-frequency digital signal processing module 821 and the low-frequency digital signal processing module 831 perform dynamic control and peak limiting on the received high-frequency signal (digital signal). The high-frequency digital signal processing module 821 also converts the high-frequency signal (digital signal) after filtering into an analog signal and sends it to the high-frequency signal amplification module 822, and the high-frequency signal amplification module 822 amplifies the analog signal and sends it to the tweeter 3. The low-frequency digital signal processing module 831 also converts the low-frequency signal (digital signal) after filtering into an analog signal and sends it to the low-frequency signal amplification module 832, and the low-frequency signal amplification module 832 amplifies the analog signal and sends it to the woofer 4.

[0038] Figure 6 This is a frequency response curve of a comparative speaker. Figure 7 : is a frequency response curve of the speaker of the embodiment of the present invention. Among them, the speaker of the comparative example uses a traditional coaxial speaker. Since the rear lobe of the high-frequency sound wave of the tweeter of the comparative example can be radiated backward into the speaker box, the radiated rear lobe is reflected by the bass diaphragm or the shell and interferes with the front lobe of the high-frequency sound wave, such as Figure 6 As shown in the figure, the frequency response curve of the comparative speaker has obvious troughs near 3kHz and 8kHz. Figure 7As shown, the peaks and valleys of the sound box curve of the embodiment of the present invention near the output frequencies of 3kHz and 8kHz have basically disappeared compared with the control example, and the frequency response curve at this time has also become significantly smoother and more uniform. This is because the tweeter 3 of the speaker of the embodiment of the present invention is installed on the panel 2, and the panel 2 effectively isolates the rear lobe of the tweeter from radiating backwards, avoiding the situation where the rear lobe is reflected by the inner wall of the shell 1. It can be seen that the technical solution of the embodiment of the present invention can effectively improve the sound quality of the speaker.

[0039] An embodiment of the present invention provides a sound box, in which a woofer 4 and a tweeter 3 are coaxially arranged. The panel 2 is divided into a first area 23 and a second area 24 arranged outside the first area 23, a tweeter sound outlet hole 21 is opened in the first area 23, and a bass sound outlet hole 22 is opened in the second area 24. The tweeter 3 is installed on the panel 2 and is opposite to the tweeter sound outlet hole 21. Therefore, there is no need to set an additional bracket 5 structure to install the tweeter 3 in the center of the woofer 4, and the sound emitted by the tweeter 3 installed on the panel 2 is directly transmitted to the sound box through the tweeter sound outlet hole 21, and the sound emitted by the woofer 4 is transmitted to the sound box through the bass sound outlet hole 22. Since the tweeter 3 is installed on the panel 2, the panel 2 effectively isolates the tweeter rear lobe from radiating backwards, avoiding the situation where the rear lobe is reflected by the inner wall of the shell 1, which is beneficial to reducing interference, thereby improving the sound effect of the sound box.

[0040] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A sound box, characterized in that: include: The housing has a receiving cavity, wherein the receiving cavity has an opening; A panel is arranged at the opening, the panel has a treble sound outlet hole and a bass sound outlet hole, the panel has a first area and a second area, the second area is arranged outside the first area, the treble sound outlet hole is arranged in the first area, and the bass sound outlet hole is arranged in the second area; A tweeter speaker is mounted on the panel, and a diaphragm of the tweeter speaker is opposite to the tweeter sound outlet hole; as well as The woofer is arranged in the accommodating cavity and is coaxially arranged with the tweeter. A sound outlet gap is provided between the diaphragm of the woofer and the tweeter, and the sound outlet gap is connected with the woofer sound outlet hole.

2. The speaker according to claim 1, characterized in that: A transition area is provided between the first area and the second area, the tweeter has a first mounting structure, and the tweeter is detachably connected to the transition area via the first mounting structure.

3. The speaker according to claim 2, characterized in that: The transition region is a solid structure surrounding the first region.

4. The speaker according to claim 2, characterized in that: The tweeter speaker comprises a tweeter speaker unit and a shell covering the tweeter speaker unit. The shell is connected to the transition area and a sealing structure is arranged between the shell and the transition area.

5. The speaker according to claim 1, characterized in that: The number of the bass sound outlet holes is multiple, and / or the number of the treble sound outlet holes is multiple.

6. The speaker according to claim 1, characterized in that: A speaker mounting structure is provided in the accommodating cavity, and the bass speaker is connected to the speaker mounting structure.

7. The speaker according to claim 1, characterized in that: The speaker also includes: The bracket is connected to the shell and opposite to the panel. The bracket has a woofer mounting hole, and the woofer is mounted in the woofer mounting hole.

8. The speaker according to claim 7, characterized in that: The speaker box also includes a control circuit board, which is arranged in the accommodating cavity and located on the side of the bracket opposite to the tweeter. The bracket has a wire passing hole, and the connecting wire between the tweeter and the control circuit board passes through the wire passing hole.

9. The speaker according to claim 1, characterized in that: The second area is annular or arc-shaped.

10. The speaker according to claim 1, characterized in that: The speaker box further comprises a control circuit, the control circuit comprising a frequency division circuit, a high frequency processing circuit and a low frequency processing circuit, the high frequency processing circuit is electrically connected to the tweeter, and the low frequency processing circuit is electrically connected to the woofer; The frequency dividing circuit is configured to divide the received audio signal into a high frequency signal and a low frequency signal, and input the high frequency signal into the high frequency processing circuit, and input the low frequency signal into the low frequency processing circuit; The high-frequency processing circuit includes a high-frequency digital signal processing module and a high-frequency signal amplifying module which are arranged in sequence, and the low-frequency processing circuit includes a low-frequency digital signal processing module and a low-frequency signal amplifying module which are arranged in sequence.

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