CN208739381U - A kind of earphone cradle - Google Patents
A kind of earphone cradle Download PDFInfo
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- CN208739381U CN208739381U CN201821793734.XU CN201821793734U CN208739381U CN 208739381 U CN208739381 U CN 208739381U CN 201821793734 U CN201821793734 U CN 201821793734U CN 208739381 U CN208739381 U CN 208739381U
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- Prior art keywords
- earphone
- switch unit
- interface
- delay
- cradle
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Abstract
The utility model embodiment discloses a kind of earphone cradle, including the equipment interface being used to connect with external devices；Earphone interface for being connect with earphone；The earphone interface includes first end and second end；Delay switch unit and analog switch unit, wherein, the first end of the earphone interface is electrically connected with the equipment interface and the analog switch unit respectively, the second end of the earphone interface is electrically connected with the delay switch unit, the delay switch unit connects the analog switch unit delay according to the connection of the first end and second end of the earphone interface, and external equipment charges to earphone.Technical solution provided by the embodiment of the utility model can effectively eliminate the plosive occurred when earphone is connected with electrification cradle, bring preferable user experience to user.It is easily achieved according to earphone cradle provided by the embodiment of the utility model and at low cost.
Description
Technical field
The utility model relates to charger technologies fields.More particularly, to a kind of earphone cradle.
Background technique
Noise cancelling headphone at present on the market is more and more, and the working principle of noise cancelling headphone is mainly the wheat passed through built in earphone
Gram wind receives extraneous sound wave, then sends reversed sound wave in contrast, so as to offset noise, reaches the effect of noise reduction
Fruit, this allows for noise cancelling headphone and needs to be built-in with rechargeable battery.In addition, due to present mainstream earphone or 3.5mm interface
Earphone, so, most noise cancelling headphone still uses the interface form of 3.5mm.Since earphone mostly uses the interface shape of 3.5mm
Formula, mobile phone can not power directly to the battery of earphone.Therefore, it is necessary to use an earphone cradle to the rechargeable battery in earphone
Charging.
But user is while charging, if first connected USB interface, if then plugging in the earphone again, it may appear that one
A apparent plosive (i.e. POP sound), very bad user experience is brought to user.The generation of POP sound is mainly due to ear
Machine male connector is when cradle is charged in insertion, it may appear that one is added in caused by the transient voltage of loudspeaker section.Therefore having must
A kind of earphone cradle eliminated earphone male connector and charge caused POP sound when cradle connects is provided.
Summary of the invention
Earphone can be effectively eliminated the purpose of this utility model is to provide one kind and when electrification cradle connects generates
POP sound brings preferable user experience to user, and is easily achieved, earphone cradle at low cost.
In order to achieve the above objectives, the utility model adopts the following technical solutions:
The utility model provides a kind of earphone cradle, and the cradle includes that the equipment being used to connect with external devices connects
Mouthful；Earphone interface for being connect with earphone；The earphone interface includes first end and second end；Delay switch unit and simulation
Switch unit, wherein the first end of the earphone interface is electrically connected with the equipment interface and the analog switch unit respectively,
The second end of the earphone interface is electrically connected with the delay switch unit, and the delay switch unit is according to the earphone interface
The connection of first end and second end connect analog switch unit delay, external equipment gives earphone charging.
Further, it is preferable to which scheme is, the delay switch unit includes power voltage terminal, input terminal and output end, wherein
The power voltage terminal of delay switch unit is electrically connected with the power end of the equipment interface；The input terminal of delay switch unit and institute
State the second end electrical connection of earphone interface；The output end of delay switch unit is electrically connected with the analog switch unit.
Further, it is preferable to which scheme is, the delay time that the delay is connected is not less than 2s.
Further, it is preferable to which scheme is, the delay switch unit further includes being connected to its first resistor end and second resistance
First resistor device between end.
Further, it is preferable to scheme is, the analog switch unit include normally opened contact end, power voltage terminal, common end and
Input terminal, the earphone interface further include third end, wherein the power voltage terminal of analog switch unit, normally opened contact end difference
It is electrically connected with the first end of the power end of the equipment interface and earphone interface；The input terminal of analog switch unit is opened with delay
Close the output end electrical connection of unit；Common end is electrically connected with the third end of the earphone interface.
Further, it is preferable to which scheme is, the cradle further includes being connected to the earphone interface second end and the delay
Second resistor between the input terminal of switch unit.
Further, it is preferable to which scheme is, the cradle includes first capacitor device, the supply voltage of the delay switch unit
End is grounded by the first capacitor device.
Further, it is preferable to which scheme is, the cradle further includes the second capacitor, the power supply electricity of the analog switch unit
Pressure side passes through second capacitor grounding.
Further, it is preferable to scheme is, the equipment interface, earphone interface, delay switch unit and analog switch unit point
It Bao Kuo not ground terminal.
Further, it is preferable to which scheme is, the earphone interface is 3.5mm earphone interface.
The beneficial effects of the utility model are as follows:
Earphone cradle provided by the utility model utilizes delay by setting analog switch unit and delay switch unit
Switch unit controls the connection of analog switch unit, and then USB is charged by the cradle to earphone, makes an uproar to POP sound is generated
Sound source delay certain time effectively eliminates caused POP sound when earphone male connector is connected with electrification cradle, in addition, the circuit knot
Structure is simple, it is easy to accomplish and it is low in cost.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is simply introduced.It is understood that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 shows the internal circuit diagram of the earphone cradle in the utility model embodiment.
Description of symbols
10: equipment interface；20: earphone interface；30: delay switch unit；40: analog switch unit；50: first capacitor
Device；60: the second capacitors；21: earphone interface first end；22: earphone interface second end；23: earphone interface third end；24: the
Two resistors；31: first resistor device.
Specific embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one below with reference to preferred embodiments and drawings
The explanation of step.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not be limited the protection scope of the present invention.
Earphone cradle in the prior art, during the charging process, if first connected cradle and USB interface, then
If plugging in the earphone again, it may appear that an apparent POP sound brings very bad user experience to user.For asking above
At least one of topic, the utility model provide a kind of novel earphone cradle.Specifically, it carries out with reference to the accompanying drawing specifically
It is bright.
As shown in connection with fig. 1, the utility model provides a kind of earphone cradle, and the cradle includes being used for and external equipment
The equipment interface 10 of connection；Earphone interface 20 for being connect with earphone；The earphone interface 20 includes first end 21 and second
End 22；Delay switch unit 30 and analog switch unit 40, wherein the earphone interface first end 21 connects with the equipment respectively
Mouth 10 and the analog switch unit 40 are electrically connected, and the earphone interface second end 22 is electrically connected with the delay switch unit 30
It connects, the delay switch unit 30 makes the analog switch list according to the connection of the earphone interface first end 21 and second end 22
40 delay of member is connected, and external equipment charges to earphone.To the wink for avoiding earphone from generating when connecting with electrification cradle in loudspeaker
Between voltage and then eliminate POP sound occurred, bring preferable user experience to user.
Specifically, equipment interface 10 is used to connect with external devices, and equipment interface 10 includes but is not limited to USB interface etc.,
External equipment includes but is not limited to computer etc..Equipment interface 10 includes power end VBUS1 and ground terminal GND.Earphone interface 20 is used
It is connect in earphone, earphone interface 20 includes but is not limited to 3.5mm earphone interface.Earphone interface further comprise third end 23,
Ground terminal and the concatenated second resistor 24 of second end 22；And the other end of second resistor is connected in parallel to second end
Son.Second resistor plays the role of to earphone interface second end and another terminal current limliting.
In the example of the utility model, the implementation of delay switch unit 30 include it is a variety of, a method of be easily achieved
It is that the delay switch unit 30 includes power voltage terminal, input, output end and ground terminal, wherein delay switch unit 30
Power voltage terminal be electrically connected with the power end of the equipment interface 10；The input terminal of delay switch unit 30 connects with the earphone
Mouth second end 22 is electrically connected；The output end of delay switch unit 30 is electrically connected with the analog switch unit 40, is prolonged described in guarantee
When switch unit 30 can control the delay of analog switch unit 40 to connect.To ensure to have time enough to extend to eliminate POP sound,
The delay time that the delay is connected is not less than 2s.
Further, the delay switch unit 30 further includes being connected between its first resistor end and second resistance end
First resistor device 31, so that the delay switch unit 30 plays the role of delay.
Furthermore for the circuit for protecting delay switch unit 30, the cradle includes first capacitor device 50, and the delay is opened
The power voltage terminal for closing unit 30 is grounded by the first capacitor device 50, for the power supply electricity to the delay switch unit 30
Pressure side filters and plays the protective effect to earphone interface 20.
The analog switch unit 40 includes normally opened contact end, power voltage terminal, common end, input terminal and ground terminal.Mould
The power voltage terminal of quasi- switch unit 40, normally opened contact end respectively with the power end of the equipment interface 10 and earphone interface
First end 21 is electrically connected；The input terminal of analog switch unit 40 is electrically connected with the output end of the delay switch unit 30；It is public
End is electrically connected with the third end 23 of the earphone interface.
For the circuit for protecting the analog switch unit 40, the cradle further includes the second capacitor 60, the simulation
The power voltage terminal of switch unit 40 is grounded by second capacitor 60, for the power supply to the analog switch unit 40
Voltage end filters and plays the protective effect to earphone interface 20.
Earphone cradle can be inserted in outer by technical solution provided by the embodiment of the utility model, user by equipment interface 10
In portion's equipment, earphone is inserted on earphone cradle by earphone interface 20, to realize earphone interface 20 and delay switch unit
30 access connection, the delay certain time of delay switch unit 30, control analog switch unit 40 are connected, analog switch unit 40
The access being connected between earphone interface 20 and equipment interface 10, external equipment can provide charging electricity by equipment interface 10 for earphone
Energy.Design in this way can effectively eliminate POP sound when earphone is connect with electrification cradle.
The connection of all parts in earphone cradle provided by the embodiment of the utility model is closed below by specific example
System is introduced.
Referring to Fig. 1, equipment interface 10 is USB interface, including power pins VBUS, grounding pin GND.
Earphone interface 20 is 3.5mm earphone interface, including pin 21 is used as earphone as earphone interface first end, pin 22
Interface second end, pin 23 are used as earphone interface third end and grounding pin.
The model of analog signal switch 40 is, for example, SGM3717YUWQ10G, including input pin IN, common pin COM,
Normally opened contact pin NO1, grounding pin GND, supply voltage pin VCC.
The model C005 of delay switch unit 30, including power pins VCC, input pin IN, output pin OUT, connect
Ground pin GND, resistance pins R1 and R2.
The power pins VBUS of equipment interface 10 respectively with the pin NO1 of analog signal switch 40, delay switch unit 30
Pin VCC, earphone interface 20 pin 21 be electrically connected, the pin GND of equipment interface 10 ground connection.
The pin 22 of earphone interface 20 passes through the pin IN of current-limiting resistor 24 and delay switch unit 30 electrical connection, ground connection
The pin COM electrical connection of pin ground connection, pin 23 and analog signal switch 40, the resistance value of resistor 24 are 1k Ω.
The pin VCC of delay switch unit 30 is electrically connected with 10 pin VBUS of equipment interface, and is grounded by capacitor 50,
The capacitance of capacitor 50 is 0.01 μ F, and pin OUT is electrically connected with the pin IN of analog signal switch 40, and pin GND ground connection is drawn
Foot R1 is connected with R2 by resistor 31, and the resistance value of resistor 31 is 1k Ω.
40 pin GND of analog signal switch ground connection, pin VCC are grounded by capacitor 60, and the capacitance of capacitor 60 is
0.01μF。
Obviously, the above embodiments of the present invention is merely examples for clearly illustrating the present invention, and
It is not limitations of the embodiments of the present invention, for those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here,
It is all to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
The column of protection scope.
Claims (10)
1. a kind of earphone cradle, which is characterized in that the cradle includes the equipment interface being used to connect with external devices；With
In the earphone interface being connect with earphone；The earphone interface includes first end and second end；Delay switch unit and analog switch
Unit, wherein
The first end of the earphone interface is electrically connected with the equipment interface and the analog switch unit respectively,
The second end of the earphone interface is electrically connected with the delay switch unit,
The delay switch unit makes the analog switch unit according to the connection of the first end and second end of the earphone interface
Delay is connected, and external equipment charges to earphone.
2. earphone cradle according to claim 1, which is characterized in that the delay switch unit includes supply voltage
End, input terminal and output end, wherein
The power voltage terminal of delay switch unit is electrically connected with the power end of the equipment interface；
The input terminal of delay switch unit is electrically connected with the second end of the earphone interface；
The output end of delay switch unit is electrically connected with the analog switch unit.
3. earphone cradle according to claim 1, which is characterized in that the delay time that the delay is connected is not less than
2s。
4. earphone cradle according to claim 1, which is characterized in that the delay switch unit further includes being connected to it
First resistor device between first resistor end and second resistance end.
5. earphone cradle according to claim 1, which is characterized in that the analog switch unit includes normally opened contact
End, power voltage terminal, common end and input terminal, the earphone interface further include third end, wherein
The power voltage terminal of analog switch unit, normally opened contact end respectively with the power end and earphone interface of the equipment interface
First end electrical connection；
The input terminal of analog switch unit is electrically connected with the output end of delay switch unit；
Common end is electrically connected with the third end of the earphone interface.
6. earphone cradle according to claim 2, which is characterized in that the cradle further includes being connected to the earphone
Second resistor between interface second end and the input terminal of the delay switch unit.
7. earphone cradle according to claim 2, which is characterized in that the cradle includes first capacitor device, described
The power voltage terminal of delay switch unit is grounded by the first capacitor device.
8. earphone cradle according to claim 5, which is characterized in that the cradle further includes the second capacitor, institute
The power voltage terminal for stating analog switch unit passes through second capacitor grounding.
9. earphone cradle according to claim 1, which is characterized in that the equipment interface, earphone interface, delay switch
Unit and analog switch unit respectively include ground terminal.
10. earphone cradle according to claim 1, which is characterized in that the earphone interface is 3.5mm earphone interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793734.XU CN208739381U (en) | 2018-11-01 | 2018-11-01 | A kind of earphone cradle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821793734.XU CN208739381U (en) | 2018-11-01 | 2018-11-01 | A kind of earphone cradle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208739381U true CN208739381U (en) | 2019-04-12 |
Family
ID=66035943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821793734.XU Active CN208739381U (en) | 2018-11-01 | 2018-11-01 | A kind of earphone cradle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208739381U (en) |
-
2018
- 2018-11-01 CN CN201821793734.XU patent/CN208739381U/en active Active
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