Audio playing module and sound equipment

Abstract

The utility model discloses an audio playing module and sound equipment, the module comprises a circuit board, a base and a double voice coil woofer arranged on the base, the base is provided with an avoidance port, the base is provided with a mounting rack at the avoidance port, the mounting rack is provided with a first tweeter and a second tweeter, the volume of the product can be effectively reduced, and the volume of the product is reduced. And a user can conveniently carry, use and install. The double-voice-coil woofer is provided with a first voice coil and a second voice coil, and the audio interface, the first voice coil, the second voice coil, the first tweeter and the second tweeter are all electrically connected with the circuit board. The circuit board is used for carrying out decoding, frequency division and amplification on an audio signal input by the audio interface and then respectively transmitting the audio signal to the first voice coil, the second voice coil, the first tweeter and the second tweeter, so that the first tweeter, the second tweeter and the double-voice-coil woofer play audios of different frequency bands, and the layering sense of the played sound effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, and in particular to an audio playback module and a audio. Background Art

[0002] Existing speakers generally include a box and several speakers arranged on the box. The speaker is generally placed on the ground, on a table, or hung on the wall, that is, the entire speaker is exposed to the environment, which takes up a large space. In addition, the sound effects played by an existing speaker do not have a sense of layering. Therefore, there is an urgent need on the market for an audio playback module that does not take up space and can play stereo effects. Utility Model Content

[0003] The main purpose of the utility model is to provide an audio playback module and a speaker, which are used to solve the problem that the existing speakers take up a large space and the sound effects have no sense of hierarchy.

[0004] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0005] An audio playback module includes an audio interface, a circuit board, a base, and a dual-voice coil woofer mounted on the base. The base has a clearance opening at a position corresponding to the dual-voice coil woofer. The base is provided with a mounting bracket at the clearance opening. The mounting bracket is positioned opposite to the cone of the dual-voice coil woofer. A first tweeter and a second tweeter are mounted on the mounting bracket. The dual-voice coil woofer is provided with a first voice coil and a second voice coil.

[0006] The audio interface, the first voice coil, the second voice coil, the first tweeter and the second tweeter are all electrically connected to the circuit board. The circuit board is used to decode, divide and amplify the audio signal input by the audio interface and transmit it to the first voice coil, the second voice coil, the first tweeter and the second tweeter respectively.

[0007] Furthermore, the audio interface is an audio coaxial interface.

[0008] Furthermore, the mounting frame includes a middle panel and a plurality of connecting parts connected to the middle panel, at least two of the connecting parts are located on both sides of the middle panel, the width of the connecting parts is smaller than the width of the middle panel, and the first tweeter and the second tweeter are spaced apart and arranged on the middle panel.

[0009] Furthermore, the base is provided with a first wiring hole at a position corresponding to the mounting bracket, and the mounting bracket is provided with a second wiring hole connected to the first wiring hole.

[0010] Furthermore, the circuit board is arranged on the back side of the base.

[0011] Furthermore, the orthographic projection of the base shape is circular.

[0012] Furthermore, the circuit board integrates an audio decoder electrically connected to the audio interface, an electronic frequency division unit electrically connected to the audio decoder, a power amplifier electrically connected to the electronic frequency division unit, and an analog frequency division unit electrically connected to the power amplifier. There are four analog frequency division units, and each of them is electrically connected to the first tweeter, the second tweeter, the first voice coil, and the second voice coil.

[0013] Furthermore, an inverter is integrated on the circuit board, and the audio interface is electrically connected to the audio decoder via the inverter;

[0014] The inverter is used to enhance the audio signal inputted by the audio interface and transmit the enhanced audio signal to the audio decoder.

[0015] The utility model also provides a speaker, including a hollow box and the audio playback module as described above; an opening communicating with the interior is opened on one side surface of the box, the base is arranged at the opening of the box, and the audio interface is arranged on the box.

[0016] Furthermore, a plurality of second passive basins are provided on the box body.

[0017] The present invention has the following beneficial effects: Compared to the prior art, the present invention configures a dual-voice coil woofer, a first tweeter, and a second tweeter on the base, and cooperates with a circuit board to enable the first tweeter, the second tweeter, and the dual-voice coil woofer to play audio of different frequency bands, thereby increasing the layering of the sound effects played. Furthermore, by configuring a mounting bracket across the avoidance opening on the base, and with the first tweeter and the second tweeter mounted on the mounting bracket, the volume of the product can be effectively reduced, making it easier for users to carry, use, and install, thereby resolving the problem of existing speakers taking up a large amount of space and lacking a layered sound effect. Furthermore, the audio playback module of this embodiment can also be embedded in a wall or ceiling when the base is mounted on the wall or ceiling, resolving the problem that existing speakers cannot be embedded in a wall or ceiling due to the bulkiness and thickness of the cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1It is a stereogram of the utility model speaker.

[0020] Figure 2 This is a three-dimensional diagram of the speaker from another perspective.

[0021] Figure 3 This is a partial exploded view of the speaker of the present invention.

[0022] Figure 4 It is a three-dimensional diagram of the audio playback module of the present invention.

[0023] Figure 5 This is a partial exploded view of the audio playback module of the present invention.

[0024] Figure 6 This is a circuit principle block diagram of the audio playback module of the utility model.

[0025] Figure 7 This is a circuit diagram of the electrical connection between the audio interface and the inverter of the utility model.

[0026] Figure 8 This is a circuit diagram of the audio decoder of the present utility model.

[0027] Figure 9 This is a circuit diagram of the electronic frequency division unit of the utility model.

[0028] Figure 10 This is a circuit diagram of the power amplifier and analog frequency division unit of the utility model. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Refer to the attached Figure 1-10 , an audio playback module 1 in an embodiment of the present utility model.

[0031] The audio playback module 1 includes an audio interface 23, a circuit board 18, a base 12, and a dual-voice coil woofer 11 mounted on the base 12. The base 12 has a clearance opening 120 at the location corresponding to the dual-voice coil woofer 11. A mounting bracket 14 is provided on the base 12 at the clearance opening 120. The mounting bracket 14 is positioned opposite the cone of the dual-voice coil woofer 11. A first tweeter 13 and a second tweeter 15 are mounted on the mounting bracket 14. The dual-voice coil woofer 11 is also provided with a first voice coil 111 and a second voice coil 112. The audio interface 23, the first voice coil 111, the second voice coil 112, the first tweeter 13, and the second tweeter 15 are all electrically connected to the circuit board 18. The circuit board 18 is configured to decode, frequency-divide, and amplify the audio signal input from the audio interface 23, and then transmit the signal to the first voice coil 111, the second voice coil 112, the first tweeter 13, and the second tweeter 15, respectively.

[0032] The present invention configures a dual-voice coil woofer 11, a first tweeter 13, and a second tweeter 15 on the base 12, and cooperates with a circuit board 18 to enable the first tweeter 13, the second tweeter 15, and the dual-voice coil woofer 11 to play audio of different frequency bands, thereby increasing the layering of the played sound effects. Furthermore, a mounting bracket 14 is configured across the avoidance opening 120 on the base 12, and the first tweeter 13 and the second tweeter 15 are disposed on the mounting bracket 14. This effectively reduces the size of the product, making it easier for users to carry, use, and install, thereby resolving the problem of existing speakers taking up a large amount of space and lacking a layered sound effect. Furthermore, the audio playback module 1 of this embodiment can also be embedded in a wall or ceiling when the base 12 is mounted on the wall or ceiling, resolving the problem that existing speakers cannot be embedded in a wall or ceiling due to the bulkiness and thickness of the cabinet 2.

[0033] Furthermore, the present invention utilizes the circuit board 18 to decode, divide and amplify the audio input from the external device via the audio interface 23, and then plays it through the dual voice coil woofer 11, the first tweeter 13 and the second tweeter 15. The audio playback module 1 of the present invention can be directly connected to the audio of the TV, computer, etc. for use without the need for an external audio decoder 181, power amplifier, frequency division unit or DSP digital processor, which is convenient for users to use.

[0034] Specifically, the base 12 can be fixed to the wall by screws and / or glue, and the external device can be a television, a computer, etc.

[0035] In one embodiment, the audio interface 23 is a coaxial audio interface. Using the coaxial audio interface 23, the audio from the television can be directly output. Furthermore, the coaxial interface can be used with a converter to convert the coaxial audio interface 23 to an HDMI interface, an optical fiber interface, or the like, allowing users to use the audio playback module 1 in a wide range of applications.

[0036] In one embodiment, the mounting bracket 14 includes a center panel 142 and multiple connecting portions 141 connected to the center panel 142. At least two connecting portions 141 are located on either side of the center panel 142. The width of the connecting portions 141 is smaller than that of the center panel 142. The first tweeter 13 and the second tweeter 15 are spaced apart on the center panel 142. The multiple connecting portions 141 are used to secure the center panel 142 to the clearance 120 on the base 12. The width of the connecting portions 141 is smaller than that of the center panel 142. This reduces the obstruction of the mounting bracket 14 on the cone of the dual-voice coil woofer 11, preventing the mounting bracket 14 from affecting the acoustic performance of the dual-voice coil woofer 11.

[0037] In one embodiment, the base 12 is provided with a first wiring hole (not shown in the figure) at a position corresponding to the mounting frame 14, and the mounting frame 14 is provided with a second wiring hole (not shown in the figure) connected to the first wiring hole, so that the electrical connection line between the circuit board 18 and the first tweeter 13 and the second tweeter 15 can be connected to the first tweeter 13 and the second tweeter 15 in sequence through the first wiring hole and the second wiring hole after being connected from the circuit board 18. The wiring is routed internally to prevent affecting the aesthetics of the product.

[0038] In one embodiment, the circuit board 18 is disposed on the back of the base 12 to facilitate fixing of the circuit board 18. This prevents the tedious operation of fixing the circuit board 18 from being required when the audio player of this embodiment is subsequently embedded.

[0039] In one embodiment, the orthographic projection of the base 12 is circular, similar to the orthographic projection of the dual-voice coil woofer 11, so as to effectively reduce the volume of the base 12 while fixing the dual-voice coil woofer 11 and facilitating the embedded installation of the audio player of this embodiment.

[0040] In one embodiment, the circuit board 18 integrates an audio decoder 181 electrically connected to the audio interface 23, an electronic frequency division unit 182 electrically connected to the audio decoder 181, a power amplifier 183 electrically connected to the electronic frequency division unit 182, and an analog frequency division unit 184 electrically connected to the power amplifier 183. There are four analog frequency division units 184, and each of them is electrically connected to the first tweeter 13, the second tweeter 15, the first voice coil 111, and the second voice coil 112.

[0041] Specifically, when the audio player of this embodiment plays audio without dividing the channels, that is, the audio decoder 181 is used to decode the audio signal transmitted by the audio interface 23 and transmit it to the electronic frequency division unit 182 for electronic frequency division to form treble audio and bass audio. The electronic frequency division unit 182 is used to amplify the treble audio and bass audio transmitted by the electronic frequency division unit 182 through the power amplifier 183, and then simulate them through the analog frequency division unit 184 and transmit them to the first voice coil 111, the second voice coil 112, the first tweeter 13 and the second tweeter 15 respectively, wherein the first tweeter 13 and the second tweeter 15 are used to play the treble audio part, and the first voice coil 111 and the second voice coil 112 receive the magnetic field generated by the bass audio signal, and cooperate with the magnet on the dual voice coil woofer 11 to achieve vibration, so that the bass audio is played on the dual voice coil woofer 11 to achieve audio playback.

[0042] When the audio player of this embodiment plays audio with stereo sound effects, the audio decoder 181 is used to decode the audio signal transmitted by the audio interface 23 to form a left-channel audio signal and a right-channel audio signal, and transmit the left-channel audio signal and the right-channel audio signal to the electronic frequency division unit 182. The electronic frequency division unit 182 is used to electronically divide the left-channel audio signal to form a left-channel treble audio signal and a left-channel bass audio signal, and amplify the left-channel treble audio signal and the left-channel bass audio signal through the power amplifier 183, and then perform analog frequency division on each of the two signals through an analog frequency division unit 184, and then transmit the signals to the first tweeter 13 and the first voice coil 111. The electronic frequency division unit 182 also electronically divides the right channel audio signal to form a right channel treble audio signal and a right channel bass audio signal, and amplifies the right channel treble audio signal and the right channel bass audio signal through the power amplifier 183, and then respectively undergoes analog frequency division through an analog frequency division unit 184, and finally transmits them to the second voice coil 112 and the second tweeter 15. In this way, the first voice coil 111 generates a magnetic field and vibrates when receiving the left channel bass audio signal, so that the dual voice coil woofer 11 plays the left channel bass audio, and the first tweeter 13 receives the left channel treble audio signal and plays the left channel treble audio; the second voice coil 112 generates a magnetic field and vibrates when receiving the right channel bass audio signal, so that the dual voice coil woofer 11 plays the right channel bass audio, and the second tweeter 15 receives the right channel treble audio signal and plays the right channel treble audio, wherein the right channel bass audio signal and the left channel bass audio signal are adjusted in phase so that the dual voice coil woofer 11 vibrates in the same direction when playing the right channel bass audio and the left channel bass audio at the same time, so as not to affect the simultaneous playback of the right channel bass audio and the left channel bass audio. Combined with the first tweeter playing the left channel treble audio and the second tweeter 15 playing the right channel treble audio, the audio playback module 1 of the present invention can achieve a stereo playback effect to meet the user's stereo needs.

[0043] In addition, in the prior art, general audio frequency division only adopts one audio method, that is, either electronic frequency division or analog frequency division. Among them, the use of electronic frequency division for audio frequency division can achieve precise frequency division, making the audio played out later more flat, resulting in poor audio softness and signal smoothness. The use of analog frequency division for audio frequency division can achieve better audio softness and signal smoothness after frequency division, and the sound played out is softer and smoother, but the frequency division accuracy is not enough for electronic frequency division. To this end, in this embodiment, the audio playback module 1 is configured with an electronic frequency division unit 182 and an analog frequency division unit 184 to cooperate, so as to achieve precise frequency division while making the audio played out by the first tweeter 13, the dual voice coil woofer 11, and the second tweeter 15 relatively soft, so as to better preserve the original sound effect, so as to solve the problem that the audio obtained by the existing audio using electronic frequency division or analog frequency division cannot simultaneously meet the requirements of precise frequency division and better audio softness.

[0044] In one embodiment, an inverter 185 is also integrated on the circuit board 18, and the audio interface 23 is electrically connected to the audio decoder 181 via the inverter 185. The inverter 185 is used to amplify the audio signal input from the audio interface 23 and transmit the amplified audio signal to the audio decoder 181. Because audio signals are attenuated during transmission through the audio line through the audio interface 23, the inverter 185 can amplify the audio signal input from the audio input terminal by inverting it twice, thereby restoring the audio signal input from the external device.

[0045] Specifically, the inverter 185 can use chips such as 74HC04D and 74LS04, the audio decoder 181 and the decoder can use chips such as AC6966B and AC6956, and the electronic frequency division unit 182 can use chips such as JL7018 and JL7012. The chip models of the audio decoder 181, the audio decoder 181, and the electronic frequency division unit 182 are not limited here.

[0046] The audio interface 23 and the inverter 185 can be referred to respectively. Figure 7 The circuit diagram of P1 and U9 in the audio decoder 181 can be referred to Figure 8 U5 in the electronic frequency division unit 182 can refer to Figure 9 U3, power amplifier 183 reference Figure 10 U2 in the first analog frequency division unit 184 can refer to Figure 10 The dotted box part (the right part of U2).

[0047] Based on the audio playback module 1 of any of the above embodiments, the present invention further provides a speaker.

[0048] The speaker comprises a hollow housing 2 and an audio playback module 1 as described in any of the above embodiments. An opening 22 communicating with the interior is formed on one side of the housing 2. The base 12 is disposed at the opening 22 of the housing 2, and the audio interface 23 is disposed on the housing 2. In other words, in this embodiment, the audio playback module 1 is mounted on the housing 2 to form a standalone speaker that can be easily moved around for use.

[0049] The audio decoder 181, electronic frequency division unit 182, power amplifier 183, analog frequency division unit 184, and inverter 185 can all be on the same circuit board 18, i.e., the circuit board 18 is a single PCB. Of course, in other embodiments, the audio decoder 181, electronic frequency division unit 182, power amplifier 183, analog frequency division unit 184, and inverter 185 can be on two separate PCBs, i.e., the circuit board 18 is composed of two PCBs. The housing 2 is also provided with a power interface 24 electrically connected to the circuit board 18. After receiving a power source, the power interface 24 converts the input power into a suitable voltage through a power module to power the inverter 185, the audio decoder 181, the electronic frequency division unit 182, and the first power amplifier 183.

[0050] In one embodiment, the box 2 is provided with a plurality of passive cones 21. The passive cones 21 can further increase the space for movement, and when the first tweeter 13, the dual voice coil woofer 11, and the second tweeter 15 are in use, the low-frequency effect and the sound quality can be further enhanced.

[0051] In one embodiment, the base 12 is provided with a plurality of limiting posts 16 on a side near the interior of the housing 2. Each limiting post 16 defines a receiving cavity 162 and a limiting guide opening 161 that communicates with the receiving cavity 162. The base 12 is provided with a locking member and a screw 19. The locking member includes a movable block 172 movably disposed within the receiving cavity 162 and a limiting block 171 connected to the movable block 172. The limiting block 171 is at least partially located outside the limiting post 16. The screw 19 passes through the base 12 and is connected to the movable block 172.

[0052] The opening 22 of the limiting guide 161 faces a position away from the center of the opening 22. When the base 12 is assembled to the box 2, the limiting block 171 abuts against the peripheral side of the opening 22 of the box 2 to fix the base 12 on the box 2. When the user needs to remove the base 12 from the box body 2, by tightening the screw 19, the limit block 171 cannot rotate under the action of the limit guide opening 161, that is, in the process of tightening the screw 19, the limit block 171 and the movable block 172 will move along the length direction of the limit guide opening 161 and move in the direction away from the base 12, so that the box body 2 and the base 12 are loosened. When the limit block 171 is placed outside the limit guide opening 161, continue to tighten the screw 19 to allow the limit block 171 to rotate with the screw 19, thereby allowing the limit block 171 to move away from the peripheral side of the opening 22 of the box body 2, that is, the limit block 171 is not opposite to the peripheral side of the opening 22 of the box body 2. At this time, the base 12 can be removed from the box body 2, and conversely, the base 12 can be installed on the box body 2.

[0053] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0054] In addition, the descriptions of "first", "second", etc. in this utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0055] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An audio playback module, characterized in that: The device comprises an audio interface, a circuit board, a base, and a dual-voice coil woofer mounted on the base. The base has an escape opening at a position corresponding to the dual-voice coil woofer. The base is provided with a mounting bracket at the escape opening. The mounting bracket is opposite to the paper cone of the dual-voice coil woofer. The mounting bracket is provided with a first tweeter and a second tweeter. The dual-voice coil woofer is provided with a first voice coil and a second voice coil. The audio interface, the first voice coil, the second voice coil, the first tweeter and the second tweeter are all electrically connected to the circuit board. The circuit board is used to decode, divide and amplify the audio signal input by the audio interface and transmit it to the first voice coil, the second voice coil, the first tweeter and the second tweeter respectively.

2. The audio playback module according to claim 1, characterized in that The audio interface is an audio coaxial interface.

3. The audio playback module according to claim 1, characterized in that The mounting frame includes a middle panel and a plurality of connecting parts connected to the middle panel, at least two of the connecting parts are located on both sides of the middle panel, the width of the connecting parts is smaller than the width of the middle panel, and the first tweeter and the second tweeter are arranged on the middle panel at intervals.

4. The audio playback module according to claim 1, characterized in that: The base is provided with a first wiring hole at a position corresponding to the mounting bracket, and the mounting bracket is provided with a second wiring hole communicating with the first wiring hole.

5. The audio playback module according to claim 1, characterized in that: The circuit board is arranged on the back side of the base.

6. The audio playback module according to claim 1, characterized in that: The orthographic projection of the base outer shape is circular.

7. The audio playback module according to claim 1, characterized in that: The circuit board integrates an audio decoder electrically connected to the audio interface, an electronic frequency division unit electrically connected to the audio decoder, a power amplifier electrically connected to the electronic frequency division unit, and an analog frequency division unit electrically connected to the power amplifier. There are four analog frequency division units, and each of them is electrically connected to the first tweeter, the second tweeter, the first voice coil, and the second voice coil.

8. The audio playback module according to claim 7, characterized in that: An inverter is also integrated on the circuit board, and the audio interface is electrically connected to the audio decoder via the inverter; The inverter is used to enhance the audio signal inputted by the audio interface and transmit the enhanced audio signal to the audio decoder.

9. A sound system, characterized in that: It comprises a hollow box and the audio playback module according to any one of claims 1 to 8; an opening communicating with the interior is provided on one side of the box, the base is arranged at the opening of the box, and the audio interface is arranged on the box.

10. The sound system according to claim 9, characterized in that: A plurality of second passive basins are arranged on the box body.

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