CN219999567U - Analog audio switching device of terminal and terminal - Google Patents
Analog audio switching device of terminal and terminal Download PDFInfo
- Publication number
- CN219999567U CN219999567U CN202321297160.8U CN202321297160U CN219999567U CN 219999567 U CN219999567 U CN 219999567U CN 202321297160 U CN202321297160 U CN 202321297160U CN 219999567 U CN219999567 U CN 219999567U
- Authority
- CN
- China
- Prior art keywords
- audio
- electrically connected
- input end
- output
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005236 sound signal Effects 0.000 claims description 41
- 230000003321 amplification Effects 0.000 abstract 1
- 238000003199 nucleic acid amplification method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Amplifiers (AREA)
Abstract
The embodiment of the utility model belongs to the technical field of audio equipment, and relates to an analog audio switching device of a terminal, which is electrically connected between a player and a sound box and comprises an audio input module, a switching module and at least two audio output modules; the audio input module is electrically connected with the player; the audio output module is provided with an input end and an output end, the input end is electrically connected with the audio input module, the output end is electrically connected with the sound box, and the input end comprises a voltage input end and a grounding input end; the switching module is electrically connected with the audio output module and is used for controlling the voltage input end to be conducted with the output end or controlling the grounding input end to be conducted with the output end. The utility model also relates to a terminal. The technical scheme provided by the utility model can avoid that the audio input module is simultaneously connected with a plurality of audio output modules, and can avoid the introduction and amplification of noise when the analog audio switching device is conducted.
Description
Technical Field
The present utility model relates to the technical field of audio devices, and in particular, to an analog audio switching device of a terminal and a terminal.
Background
The current common analog audio switching device in the market generally adopts a double-pole multi-throw switch to realize the switching among a plurality of sound boxes, and the double-pole multi-throw switch is broken off to be moved from one sound box to another sound box, so that the switching of input signals is realized, a target sound box can form a closed loop of signals, and thus the target sound box works, and non-target sound boxes are all in a starting-up and analog input signal connecting wire suspending state, namely are not in signal conduction with an audio input module.
In the existing analog audio switching device, a circuit of a non-target sound box is in an open circuit or suspension state, and an audio signal wire connected with the circuit is interfered by environmental electromagnetic waves, so that the non-target sound box can continuously output obvious noise, and the actual playing effect is affected.
Disclosure of Invention
The technical problem to be solved by the embodiment of the utility model is that when the existing analog audio switching device is switched to one of the sound boxes to work, other sound boxes can generate noise to influence the playing effect.
In order to solve the above technical problems, an embodiment of the present utility model provides an analog audio switching device for a terminal, which adopts the following technical scheme:
the analog audio switching device of the terminal is electrically connected between the player and the sound box and comprises an audio input module, a switching module and at least two audio output modules;
the audio input module is electrically connected with the player;
the audio output module is provided with an input end and an output end, the input end is electrically connected with the audio input module, the output end is electrically connected with the sound box, and the input end comprises a voltage input end and a grounding input end;
the switching module is electrically connected with the audio output module and is used for controlling the voltage input end to be conducted with the output end or controlling the grounding input end to be conducted with the output end.
Further, the audio input module comprises a first signal contact, a second signal contact and a third signal contact;
the first signal contact and the second signal contact are respectively and correspondingly connected with a left audio signal line and a right audio signal line of the player, and the first signal contact and the second signal contact are electrically connected with the voltage input end;
the third signal contact is grounded.
Further, the audio output module comprises an audio switching circuit, wherein the audio switching circuit comprises a first positive input end, a second positive input end, a first negative input end, a second negative input end, a change-over switch, a positive output end and a negative output end;
the first positive input end and the first negative input end are respectively grounded to form the grounding input end;
the second positive input end and the second negative input end are electrically connected with the audio input module to form the voltage input end;
the positive output end and the negative output end are respectively and electrically connected with the sound box to form the output end;
the change-over switch is electrically connected between the input end and the output end and is used for switching on the audio circuit.
Further, the audio switching circuit further comprises a grounding end and a power input end electrically connected with a power supply.
Further, the audio output module further comprises an audio output circuit, and the audio output circuit is electrically connected to the output end.
Further, the audio output circuit comprises a fourth signal contact, a fifth signal contact and a sixth signal contact;
the fourth signal contact is electrically connected with the positive output end, the fifth signal contact is electrically connected with the negative output end, and the fourth signal contact and the fifth signal contact are correspondingly connected with a left audio signal line and a right audio signal line of the sound box respectively;
the sixth signal contact is grounded.
Further, the switching module comprises a signal input end, at least two selection contacts and a single-pole switch for connecting the signal input end with one of the selection contacts;
the selection contact is electrically connected with the corresponding audio output module, and when the selection contact is connected with the signal input end, the voltage input end of the corresponding audio output module is connected with the output end.
Further, the switching module further comprises a control circuit, and the control circuit is electrically connected with the single-pole switch and used for controlling switching of the selection contact.
Further, the switching module further comprises a protection resistor, and the protection resistor is arranged between the signal input end and the single-pole switch.
In order to solve the technical problems, the embodiment of the utility model also provides a terminal, which adopts the following technical scheme:
a terminal comprising an analog audio switching device of a terminal as described above.
Compared with the prior art, the embodiment of the utility model has the following main beneficial effects:
according to the embodiment of the utility model, the voltage input end and the grounding input end are arranged on the audio output module, the voltage input end and the grounding input end are controlled to be respectively communicated with the output end through the switching module, when the target sound box needs to work, the voltage input end and the output end are communicated, so that the target sound box can work stably, the grounding input end of the non-target sound box is connected with the output end, the non-target sound box is communicated with the ground when in a non-sound expansion state, the interference of electromagnetic waves on a circuit is avoided, and the noise introduction of the non-target sound box is avoided.
Drawings
In order to more clearly illustrate the solution of the present utility model, a brief description will be given below of the drawings required for the description of the embodiments, it being apparent that the drawings in the following description are some embodiments of the present utility model and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an analog audio switching device according to the present utility model;
fig. 2 is a schematic circuit diagram of an analog audio switching device of the present utility model.
Reference numerals:
1. an audio input module; 11. a first signal contact; 12. a second signal contact; 13. a third signal contact; 2. a switching module; 21. a protection resistor; 3. an audio output module; 31. a ground input; 32. a voltage input terminal; 33. an output end; 34. an audio switching circuit; 35. an audio output circuit; 351. a fourth signal contact; 352. a fifth signal contact; 353. and a sixth signal contact.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
Embodiments of the analog Audio switching device of the terminal of the present utility model
Referring to fig. 1, the present utility model provides an analog audio switching device of a terminal, which is electrically connected between a player (not shown) and a sound (not shown), and includes: the terminal comprises an audio input module 1, a switching module 2 and at least two audio output modules 3, wherein in the embodiment, the number of the audio output modules 3 is three, and the terminal comprises three sound boxes (not shown in the figure) which are respectively and correspondingly connected with the audio output modules 3.
The audio input module 1 is electrically connected with the player, the audio output module 3 is provided with an input end and an output end 33, the output end 33 is electrically connected with the audio input module 1, the output end 33 is electrically connected with the sound box, and the input end comprises a grounding input end 31 and a voltage input end 32; the switching module 2 is electrically connected to the audio output module 3, and is configured to control the ground input terminal 31 to be conducted with the output terminal 33 or the voltage input terminal 32 to be conducted with the output terminal 33.
According to the analog audio switching device provided by the embodiment of the utility model, the grounding input end 31 and the voltage input end 32 are arranged on the audio output module 3, and one of the grounding input end 31 and the voltage input end 32 is controlled to be conducted with the output end 33 through the switching module 2, so that a stable passage can be kept when the loudspeaker box works, the loudspeaker box can work stably, when the loudspeaker box is in a non-sound-amplifying state, the loudspeaker box is conducted to the ground, the interference of electromagnetic waves to a circuit is avoided, and the noise introduction of the non-target loudspeaker box is avoided.
Referring to fig. 1 and 2, the audio input module 1 includes a first signal contact 11, a second signal contact 12, and a third signal contact 13.
One of the first signal contact 11 and the second signal contact 12 is correspondingly connected with a left audio signal line and the other is correspondingly connected with a right audio signal line of the player, and the first signal contact 11 and the second signal contact 12 are electrically connected with the voltage input end 32; the third signal contact 13 is grounded, in this embodiment, the audio signal line of the player includes a left audio signal line and a right audio signal line, the first signal contact 11 is correspondingly connected to the right audio signal line, the second signal contact 12 is correspondingly connected to the left audio signal line, and the third signal contact 13 is grounded.
In an embodiment of the present utility model, the audio input module 1 may be a 3.5mm connector.
According to the embodiment of the utility model, the signal contact arranged on the audio input module 1 is correspondingly connected with the audio signal line of the player, so that the audio signal of the player can be accurately transmitted into the analog audio switching device, the target sound box can accurately convert the audio signal of the player into sound, a good tone quality effect is provided, and meanwhile, the audio input module 1 can realize quick plug-in connection between the analog audio switching device and the player, and the installation steps are simplified.
In this embodiment, the analog audio switching device includes three audio output modules 3 with the same structure, where the audio output modules 3 include an audio switching circuit 34, and the audio switching circuit 34 includes a first positive input terminal d1+, a second positive input terminal d2+, a first negative input terminal D1-, a second negative input terminal D2-, a switch S, a positive output terminal d+ and a negative output terminal D-.
The first positive input terminal d1+ and the first negative input terminal D1-are grounded respectively to form the ground input terminal 31.
The second positive input terminal d2+ and the second negative input terminal D2-are electrically connected to the audio input module 1 to form the voltage input terminal 32, wherein in this embodiment, the second positive input terminal d2+ is electrically connected to the first signal contact 11 through an electric wire to receive a right audio signal of the player, and the second negative input terminal D2-is electrically connected to the second signal contact 12 through an electric wire to receive a left audio signal of the player.
The positive output terminal d+ and the negative output terminal D-are electrically connected to the sound box, respectively, to form the output terminal 33.
The switch S is electrically connected between the input end and the output end 33, and is used for switching on an audio circuit, in this embodiment, the switch S is a double-pole double-throw switch, where the double-pole double-throw switch is connected with the output end 33, one set of contact points of the double-pole double-throw switch are respectively connected with the first positive input end d1+ and the first negative input end D1-, and the other set of contact points are respectively connected with the second positive input end d2+ and the second negative input end D2-.
According to the embodiment of the utility model, the audio switching circuit 34 is contacted with one group of contact points by controlling the double-pole double-throw switch, so that the audio switching circuit 34 is conducted with the audio input module 1 through the voltage input end 32 or the audio switching circuit 34 is grounded through the grounding input end 31, the working state of the sound box is switched, the sound box is ensured to be conducted with the ground under the condition of breaking, and noise caused by influence of the non-working state is avoided.
In some embodiments, the audio switching circuit 34 further includes a ground GND and a power supply input VCC electrically connected to a power supply.
Referring back to fig. 1 and 2, in some embodiments, the audio output module 3 further includes an audio output circuit 35, and the audio output circuit 35 is electrically connected to the output terminal of the audio switching circuit 34.
In some embodiments, the audio output circuit 35 includes a fourth signal contact 351, a fifth signal contact 352, and a sixth signal contact 353.
The fourth signal contact 351 is electrically connected with the positive output end d+, the fifth signal contact 352 is electrically connected with the negative output end D-, one of the fourth signal contact 351 and the fifth signal contact 352 is correspondingly connected with the left audio signal line and the other one of the fourth signal contact 351 and the fifth signal contact 352 is correspondingly connected with the right audio signal line of the sound box, and the sixth signal contact 353 is grounded; in this embodiment, the audio signal line of the sound box includes a left audio signal line and a right audio signal line, the fourth signal contact 351 is correspondingly connected to the right audio signal line of the sound box, and the right audio signal of the player is output to the right audio signal line of the sound box through the positive output end d+ and the fourth signal contact 351; the fifth signal contact 352 is correspondingly connected with the left audio signal line of the sound box, the left audio signal of the player is output to the left audio signal line of the sound box through the negative output end D-, the fifth signal contact 352, and the sixth signal contact 353 is grounded.
In this embodiment, the audio output circuit 35 may be configured as a 3.5mm connector.
According to the embodiment of the utility model, the audio output circuit 35 is arranged at the output end of the audio switching circuit 34, and the audio signal wire of the sound box is correspondingly connected with the signal contact of the audio output circuit 35, so that the sound box can accurately receive the audio signal of the player and convert the audio signal into sound, a good tone quality effect is provided, and meanwhile, by adopting the audio output circuit 35, the quick plug-in connection of the analog audio switching device and the sound box can be realized, and the installation steps are simplified.
Referring again to fig. 1 and 2, the switching module 2 includes a signal input terminal, at least two selection contacts, and a single-pole switch K for connecting the signal input terminal to one of the selection contacts.
The selection contacts are electrically connected with the corresponding audio output modules 3, and when the selection contacts are connected with the signal input ends, the voltage input ends 32 of the corresponding audio output modules 3 are connected with the output ends 33.
In this embodiment, the number of the selection contacts is three, namely, the first selection contact S1, the second selection contact S2 and the third selection contact S3, and the number of the audio output modules 3 is three, where each audio output module 3 includes an audio switching circuit 34 and an audio output circuit 35, and the audio switching circuits are respectively a first audio switching circuit U1, a second audio switching circuit U2, a third audio switching circuit U3, a first audio output circuit J1, a second audio output circuit J2 and a third audio output circuit J3; specifically, the first selection contact S1 is electrically connected to the switch S of the first audio switching circuit U1 through an electric wire, the second selection contact S2 is electrically connected to the switch S of the second audio switching circuit U2 through an electric wire, and the third selection contact S3 is electrically connected to the switch S of the third audio switching circuit U3 through an electric wire.
In this embodiment, taking the connection of the audio input module and the first speaker as an example, the working principle of the analog audio switching device is described:
when the audio signal processing device works, the single-pole switch K is controlled to move, the single-pole switch K is contacted with the first selection contact S1, so that the switch S1 of the first audio switching circuit U1 is connected with the second positive input end D2+ and the second negative input end D2-, the audio input module 1 receives the audio signal of the player, the audio signal is transmitted to the first audio switching circuit U1, and the audio signal is transmitted to the first sound box after passing through the first audio output circuit J1, and the first sound box plays sound;
the switch S2 of the second audio switching circuit U2 and the switch S3 of the third audio switching circuit U3 are connected with the first positive input end D1+ and the first negative input end D1-, the input ends of the second audio switching circuit U2 and the third audio switching circuit U3 are grounded, the second sound box and the third sound box maintain a mute state, no noise exists, and the sound quality of the first sound box is improved.
In some embodiments, the switching module 2 further includes a control circuit electrically connected to the single-pole switch K for controlling the switching of the selection contact, and in other embodiments, the single-pole switch K may also be a manually controlled switch.
In some embodiments, the switching module 2 further includes a protection resistor 21, where the protection resistor 21 is disposed between the signal input terminal and the single-pole switch K, and the protection resistor 21 is used to protect the single-pole switch K.
Embodiments of the terminal of the utility model
The embodiment of the utility model provides a terminal which comprises a player, at least one sound box, a shell and an analog audio switching device of the terminal.
In this embodiment, the analog audio switching device is installed in the housing, and includes three audio output modules, and the terminal includes three speakers; the player is arranged on the shell and is connected with the audio input module of the analog audio switching device; the three sound boxes are arranged on the shell and are respectively connected with the corresponding audio output modules, after the specified audio switching circuit is selected through the switching module, the player outputs audio signals to the audio input module, and the audio signals are converted into sound through the corresponding sound boxes and are emitted after passing through the specified audio switching circuit and the audio output circuit.
By adopting the analog audio switching device, the terminal provided by the embodiment of the utility model can ensure that the sound box in the working state can stably work to output high-quality sound, so that the sound box in the non-sound-amplifying state can be conducted to the ground, the interference of electromagnetic waves to a circuit is avoided, and the noise introduction of the sound box in the non-sound-amplifying state is avoided.
It is apparent that the above-described embodiments are only some embodiments of the present utility model, but not all embodiments, and the preferred embodiments of the present utility model are shown in the drawings, which do not limit the scope of the patent claims. This utility model may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the utility model are directly or indirectly applied to other related technical fields, and are also within the scope of the utility model.
Claims (10)
1. The analog audio switching device of the terminal is electrically connected between the player and the sound box and is characterized by comprising an audio input module, a switching module and at least two audio output modules;
the audio input module is electrically connected with the player;
the audio output module is provided with an input end and an output end, the input end is electrically connected with the audio input module, the output end is electrically connected with the sound box, and the input end comprises a voltage input end and a grounding input end;
the switching module is electrically connected with the audio output module and is used for controlling the voltage input end to be conducted with the output end or controlling the grounding input end to be conducted with the output end.
2. The analog audio switching device of a terminal according to claim 1, wherein the audio input module comprises a first signal contact, a second signal contact, and a third signal contact;
the first signal contact and the second signal contact are respectively and correspondingly connected with a left audio signal line and a right audio signal line of the player, and the first signal contact and the second signal contact are electrically connected with the voltage input end;
the third signal contact is grounded.
3. The analog audio switching device of a terminal according to claim 1 or 2, wherein the audio output module comprises an audio switching circuit comprising a first positive input, a second positive input, a first negative input, a second negative input, a switch, a positive output and a negative output;
the first positive input end and the first negative input end are respectively grounded to form the grounding input end;
the second positive input end and the second negative input end are electrically connected with the audio input module to form the voltage input end;
the positive output end and the negative output end are respectively and electrically connected with the sound box to form the output end;
the change-over switch is electrically connected between the input end and the output end and is used for switching on the audio circuit.
4. The analog audio switching device of claim 3, wherein the audio switching circuit further comprises a ground terminal and a power input terminal electrically connected to a power source.
5. The analog audio switching device of claim 3, wherein the audio output module further comprises an audio output circuit, the audio output circuit being electrically connected to the output terminal.
6. The analog audio switching device of a terminal of claim 5, wherein the audio output circuit comprises a fourth signal contact, a fifth signal contact, and a sixth signal contact;
the fourth signal contact is electrically connected with the positive output end, the fifth signal contact is electrically connected with the negative output end, and the fourth signal contact and the fifth signal contact are correspondingly connected with a left audio signal line and a right audio signal line of the sound box respectively;
the sixth signal contact is grounded.
7. The analog audio switching device of a terminal according to claim 1, wherein the switching module comprises a signal input, at least two selection contacts, and a single-pole switch connecting the signal input with one of the selection contacts;
the selection contact is electrically connected with the corresponding audio output module, and when the selection contact is connected with the signal input end, the voltage input end of the corresponding audio output module is connected with the output end.
8. The analog audio switching device of a terminal according to claim 7, wherein the switching module further comprises a control circuit electrically connected to the single-pole switch for controlling the switching of the selection contacts.
9. The analog audio switching device of claim 8, wherein the switching module further comprises a protection resistor disposed between the signal input and the single-pole switch.
10. A terminal comprising an analog audio switching device of a terminal according to any of the preceding claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321297160.8U CN219999567U (en) | 2023-05-25 | 2023-05-25 | Analog audio switching device of terminal and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321297160.8U CN219999567U (en) | 2023-05-25 | 2023-05-25 | Analog audio switching device of terminal and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219999567U true CN219999567U (en) | 2023-11-10 |
Family
ID=88620024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321297160.8U Active CN219999567U (en) | 2023-05-25 | 2023-05-25 | Analog audio switching device of terminal and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219999567U (en) |
-
2023
- 2023-05-25 CN CN202321297160.8U patent/CN219999567U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101630802B (en) | Headphone jack structure | |
| CN101159991B (en) | Audio equipment | |
| CN112235692B (en) | Audio switching circuit, electronic equipment and audio switching method | |
| CN201898599U (en) | Circuit capable of eliminating POP noise and mobile terminal | |
| CN219999567U (en) | Analog audio switching device of terminal and terminal | |
| CN106658328B (en) | A kind of earphone test circuit | |
| CN111641896B (en) | Headset earphone | |
| CN101673878A (en) | A receiving apparatus, a connecting cable and a power-supply apparatus | |
| CN101014211A (en) | 5.1 track earphone with USB interface | |
| CN202333386U (en) | Audio adapter cable | |
| CN209056277U (en) | A kind of voice processing apparatus and electrical equipment | |
| CN208509257U (en) | Loudspeaker and sound box system | |
| CN218162826U (en) | Audio circuit structure of terminal and terminal | |
| CN211457355U (en) | Audio equipment and audio system with multiple sound effect cores | |
| CN216057450U (en) | Audio playing circuit | |
| CN210274443U (en) | Earphone system switching control circuit and device | |
| CN219644092U (en) | Audio frequency sound effect switching circuit and earphone | |
| CN216930297U (en) | Double-sound-source output switching device | |
| CN117676435A (en) | Playback control device and system for noninductive switching audio | |
| WO2019066552A1 (en) | Earjack connection apparatus for earphone antenna, and electronic device comprising same | |
| CN209982712U (en) | Noise elimination device, earphone and sound box | |
| CN213403476U (en) | User interface audio output circuit | |
| EP4297429A1 (en) | Apparatus for reproducing sound and headphone comprising the same | |
| CN213403474U (en) | Multichannel live broadcast sound digital power amplifier all-in-one machine | |
| RU2792085C1 (en) | Audio circuit, device and control method related to it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |