CN205584464U - Audio frequency expanding unit of portable terminal device - Google Patents
Audio frequency expanding unit of portable terminal device Download PDFInfo
- Publication number
- CN205584464U CN205584464U CN201521043388.XU CN201521043388U CN205584464U CN 205584464 U CN205584464 U CN 205584464U CN 201521043388 U CN201521043388 U CN 201521043388U CN 205584464 U CN205584464 U CN 205584464U
- Authority
- CN
- China
- Prior art keywords
- portable terminal
- terminal device
- transmission line
- speaker
- utility
- 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.)
- Expired - Fee Related
Links
Abstract
An embodiment of the utility model provides an audio frequency expanding unit of portable terminal device, include: with the casing that the portable terminal device cup jointed, the inner wall of casing has hollow structure, hollow structure forms the acoustics transmission line of transmission line audio amplifier, the acoustics transmission line with the built -in loudspeaker box of portable terminal device connects. The utility model discloses the transmission line audio amplifier that utilizes the hollow structure formation of the casing that the portable terminal device cup joints carries out the low frequency extension, has improved the low -frequency response, and the inner space of vacant portable terminal device.
Description
Technical field
This utility model relates to audio frequency play-back technology field, particularly relates to the audio extension of a kind of portable terminal device
Device.
Background technology
Along with the development of technology, the portable terminal device such as existing mobile phone except function from strength to strength, to profile
Requirement the highest, this causes the utilization rate of its inner space more and more higher.Therefore, in order to improve
The utilization rate of its inner space, the inside audio amplifier volume of the portable terminal device such as current mobile phone is the least.But, sound
The volume learning structure affects the low frequency extension of speaker, and speaker cannot be sent by the inside audio amplifier of small size
Audio frequency carry out low frequency extension, the LF-response causing the portable terminal devices such as mobile phone is very poor.
Therefore, how the portable terminal devices such as mobile phone are carried out the low frequency extension of audio frequency, become in prior art urgently
Need to solve the technical problem that.
Utility model content
In view of this, this utility model embodiment provides the audio extension device of a kind of portable terminal device, its profit
The transmission line audio amplifier formed by the hollow-core construction of the be socketed housing of portable terminal device carries out low frequency extension, improves
LF-response, and the inner space of vacant portable terminal device.
This utility model embodiment provide a kind of portable terminal device audio extension device, including: with described just
Taking the housing of terminal socket, the inwall of described housing has hollow-core construction, and described hollow-core construction forms transmission
The acoustic transmission line of line audio amplifier, described acoustic transmission line is connected with the built-in speaker of described portable terminal device.
In this utility model one specific embodiment, described acoustic transmission line combines valve by airtight connection mouth
Door is connected with the built-in speaker of described portable terminal device.
In this utility model one specific embodiment, described valve is one-way cock.
In this utility model one specific embodiment, described valve is air-tightness valve.
In this utility model one specific embodiment, built-in by described portable terminal device of described air-tightness valve
The sound wave that audio amplifier sends imports described acoustic transmission line by airtight connection mouth.
In this utility model one specific embodiment, described housing is the protection set of described portable terminal device.
In this utility model one specific embodiment, described acoustic transmission line is thin in described inner walls
Shape space.
In this utility model one specific embodiment, described acoustic transmission line uses a length of described speaker
The transmission conduit of any length in 1/4th of resonant frequency corresponding wavelength, 3/4ths, 5/4ths
Line.
In this utility model one specific embodiment, described housing is provided with and can be entered by described portable terminal device
Row identification also activates the sticker of described portable terminal device speaker.
In this utility model one specific embodiment, described sticker is nfc card patch.
From above technical scheme, this utility model includes the housing that portable terminal device is socketed, described shell
Internal portion has a hollow-core construction, and described hollow-core construction forms the acoustic transmission line of transmission line audio amplifier, and with institute
The built-in speaker stating portable terminal device connects.This utility model is not take up the inner space of portable terminal device, utilizes
The transmission line audio amplifier that the hollow-core construction of the be socketed housing of portable terminal device is formed carries out low frequency extension, improves low
Frequency response should.The low-frequency minimum of speaker can be extended by this utility model, and with low cost, makes
With convenient.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will
The accompanying drawing used required in embodiment or description of the prior art is briefly described, it should be apparent that,
Accompanying drawing in describing below is only some embodiments described in this utility model, common for this area
From the point of view of technical staff, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the audio extension device of a kind of portable terminal device；
Fig. 2 is the structural representation of the portable terminal device being socketed of the audio extension device of a kind of portable terminal device；
Fig. 3 is the schematic diagram of audio extension device one application scenarios of a kind of portable terminal device.
Detailed description of the invention
This utility model includes that the housing that portable terminal device is socketed, described enclosure interior have hollow-core construction,
Described hollow-core construction forms the acoustic transmission line of transmission line audio amplifier, and with the built-in speaker of described portable terminal device
Connect.This utility model is not take up the inner space of portable terminal device, utilizes the be socketed housing of portable terminal device
The transmission line audio amplifier that hollow-core construction is formed carries out low frequency extension, improves LF-response.This utility model can
It is extended with the low-frequency minimum to speaker, and with low cost, easy to use.
Certainly, the institute that arbitrary technical scheme of the present utility model must be not necessarily required to reach above simultaneously is implemented
There is advantage.
For the technical scheme making those skilled in the art be more fully understood that in this utility model, below in conjunction with
Accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out clear,
Be fully described by, it is clear that described embodiment be only a part of embodiment of this utility model rather than
Whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are obtained
Every other embodiment, all should belong to the scope of this utility model protection.
Further illustrate this utility model below in conjunction with this utility model accompanying drawing to implement.
This utility model one specific embodiment provides the audio extension device of a kind of portable terminal device.
Seeing Fig. 1 and Fig. 2, described audio extension device includes: with the shell of described portable terminal device 1 socket
Body 2, the inwall of described housing 2 has hollow-core construction, and described hollow-core construction forms the sound of transmission line audio amplifier
Learning transmission line 21, described acoustic transmission line 21 is connected with the built-in speaker 11 of described portable terminal device 1.
Described transmission line audio amplifier is that construction one allows bass monomer back of the body ripple pass in the casing being connected with speaker
The pipeline being passed to outside casing.Transmission line audio amplifier is actually the low-frequency sound wave of speaker reverse side through one
Long back of pipeline is sent out, thus extends the low-frequency minimum of speaker, improves the LF-response of audio frequency.
This utility model is not take up the inner space of portable terminal device, utilizes the sky of the be socketed housing of portable terminal device
The transmission line audio amplifier that core structure is formed carries out low frequency extension, improves LF-response.This utility model is permissible
The low-frequency minimum of speaker is extended, and with low cost, easy to use.
Seeing Fig. 1 and Fig. 2, described portable terminal device 1 includes built-in speaker 11 and speaker 12.In described
Putting audio amplifier and have a little opening 111, acoustic transmission line 21 combines valve and institute by airtight connection mouth 211
The little opening 111 of the built-in speaker 11 stating portable terminal device 1 connects.
Specifically, described valve is one-way cock.In implementing, described valve is rubber valve.
When described portable terminal device 1 is not socketed described housing 2, described valve keep air-tightness, described just
The built-in speaker 11 taking terminal 1 is operated.When described portable terminal device 1 is socketed described housing 2, institute
State valve and still keep air-tightness, the sound wave that the built-in speaker 11 of described portable terminal device 1 is sent by described valve
The acoustic transmission line 21 that described housing 2 inwall hollow-core construction is formed is imported by airtight connection mouth 211.Warp
The acoustic phase crossing acoustic transmission line 21 offsets, the sound wave in described acoustic transmission line 21 exit with
The acoustic phase superposition that described portable terminal device 1 speaker 12 sends, thus complete the extension of low frequency.
The low-frequency minimum of speaker can be extended by this utility model, and with low cost, user
Just.
In the application one implements, referring to Fig. 3, described housing 2 is the guarantor of described portable terminal device 1
Sheath, thus while realizing described portable terminal device 1 is protected, to raising of described portable terminal device 1
The low frequency of sound device 12 carries out lower limit extension.
In order to ensure the frivolous of described housing 2, described acoustic transmission line 21 is in described housing 2 inwall
Thin type space.
Specifically, this utility model, by the resonant frequency of speaker 12, brings formula (1) into:
The velocity of sound=wavelength x frequency (1)
The wavelength corresponding to described speaker 12 resonant frequency can be obtained by above-mentioned formula (1), described
Acoustic transmission line 21 uses 1/4th, the four of a length of described speaker 12 resonant frequency corresponding wavelength
The transmission line pipeline of any length in/tri-, 5/4ths.
During another implements in the application, described housing 2 is provided with and can be entered by described portable terminal device 1
Row identification also activates the sticker of speaker 12 of described portable terminal device 1.
NFC (Near Field Communication) near-field communication technology is by non-contact radio-frequency identification
(RFID) and interconnect Technology Integration develop, on one chip combining induction card reader,
Vicarious card and point-to-point function, can be identified with compatible equipment and data exchange in short distance.
Specifically, due to safety and the extensively application of NFC technique, described sticker is nfc card patch.
The acoustic transmission line utilizing housing 2 inwall hollow-core construction to be formed due to this utility model carries out low frequency expansion
Exhibition, for avoiding other people copy utility model, arranges the nfc card patch of identification on described housing 2.
When portable terminal device 1 identify have on described housing 2 legal identity nfc card patch, then activate institute
State the speaker 12 of portable terminal device 1, make the speaker 12 of described portable terminal device 1 work.When portable end
Hold 1 None-identified to go out the nfc card patch of the legal identity having on described housing 2, then make described portable end
Speaker 12 output mute of end 1, stops the utility model works of bootlegging.
Although having been described for preferred embodiment of the present utility model, but those skilled in the art once obtain
The substantially creative concept of cicada, then can make other change and amendment to these embodiments.So, institute
Attached claim is intended to be construed to include preferred embodiment and fall into all changes of this utility model scope
And amendment.Obviously, those skilled in the art this utility model can be carried out various change and modification and
Without departing from spirit and scope of the present utility model.So, if of the present utility model these are revised and modification
Belong within the scope of this utility model claim and equivalent technologies thereof, then this utility model is also intended to bag
Change and including modification containing these.
Claims (10)
1. the audio extension device of a portable terminal device, including: the housing being socketed with described portable terminal device, it is characterised in that the inwall of described housing has hollow-core construction, described hollow-core construction forms the acoustic transmission line of transmission line audio amplifier, and described acoustic transmission line is connected with the built-in speaker of described portable terminal device.
Audio extension device the most according to claim 1, it is characterised in that described acoustic transmission line combines valve by airtight connection mouth and is connected with the built-in speaker of described portable terminal device.
Audio extension device the most according to claim 2, it is characterised in that described valve is one-way cock.
Audio extension device the most according to claim 3, it is characterised in that described valve is air-tightness valve.
Audio extension device the most according to claim 4, it is characterised in that the sound wave that the built-in speaker of described portable terminal device is sent by described air-tightness valve imports described acoustic transmission line by airtight connection mouth.
Audio extension device the most according to claim 1, it is characterised in that described housing is the protection set of described portable terminal device.
Audio extension device the most according to claim 1, it is characterised in that described acoustic transmission line is the thin type space in described inner walls.
Audio extension device the most according to claim 7, it is characterised in that the transmission line pipeline of any length in 1/4th, 3/4ths, 5/4ths of the described acoustic transmission line a length of resonance frequency of loudspeaker corresponding wavelength of employing.
Audio extension device the most according to claim 8, it is characterised in that be provided with on described housing and can be carried out identification by described portable terminal device and activate the sticker of described speaker.
Audio extension device the most according to claim 9, it is characterised in that described sticker is nfc card patch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043388.XU CN205584464U (en) | 2015-12-15 | 2015-12-15 | Audio frequency expanding unit of portable terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521043388.XU CN205584464U (en) | 2015-12-15 | 2015-12-15 | Audio frequency expanding unit of portable terminal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205584464U true CN205584464U (en) | 2016-09-14 |
Family
ID=56882496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521043388.XU Expired - Fee Related CN205584464U (en) | 2015-12-15 | 2015-12-15 | Audio frequency expanding unit of portable terminal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205584464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107205194A (en) * | 2017-06-07 | 2017-09-26 | 鞠波 | A kind of audio amplifier and sound box system |
-
2015
- 2015-12-15 CN CN201521043388.XU patent/CN205584464U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107205194A (en) * | 2017-06-07 | 2017-09-26 | 鞠波 | A kind of audio amplifier and sound box system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10958468B2 (en) | Portable acoustical unit | |
| WO2017059812A1 (en) | Voice assistant extension device and working method therefor | |
| CN106101979A (en) | Method and the electronic equipment of use the method for short-distance wireless communication | |
| CN103178880B (en) | A kind of NFC bluetooth equipment and matching method thereof and manufacture method | |
| CN108538297A (en) | A kind of intelligent sound exchange method and interactive system based on wireless microphone array | |
| CN205584464U (en) | Audio frequency expanding unit of portable terminal device | |
| CN201207125Y (en) | Projection adaptor | |
| CN203813935U (en) | Voice frequency transmission device and assembly block | |
| CN203933199U (en) | Motor for receiver | |
| CN206312567U (en) | A kind of portable intelligent household speech control system | |
| CN202918285U (en) | Wireless transmission apparatus and system | |
| CN205159720U (en) | USB -Type -C interface converter | |
| CN204244455U (en) | Earphone | |
| CN205430606U (en) | Audio frequency expanding unit of portable terminal device | |
| CN204968062U (en) | Portable earphone | |
| CN104281045B (en) | Solar energy intelligent watch combinative structure | |
| CN203813936U (en) | Audio transmission equipment | |
| TWI650023B (en) | Wearable communication device | |
| CN204795485U (en) | Waterproof bluetooth speaker | |
| CN202111820U (en) | Novel Bluetooth sound box | |
| CN205305094U (en) | Play device of low frequency extension can carry out audio frequency and collet thereof | |
| CN203896486U (en) | Audio transmission device | |
| CN102438186B (en) | Portable sound box for Apple Inc multimedia mobile equipment | |
| CN104223713A (en) | Anti-theft device for handbag | |
| CN203340132U (en) | Mobile phone having movable folding playback structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20170721 Granted publication date: 20160914 |
|
| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200721 Granted publication date: 20160914 |
|
| PD01 | Discharge of preservation of patent | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20171215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |