CN103118313A - Sound cavity, sound cavity system and mobile terminal - Google Patents

Sound cavity, sound cavity system and mobile terminal Download PDF

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Publication number
CN103118313A
CN103118313A CN2012103973009A CN201210397300A CN103118313A CN 103118313 A CN103118313 A CN 103118313A CN 2012103973009 A CN2012103973009 A CN 2012103973009A CN 201210397300 A CN201210397300 A CN 201210397300A CN 103118313 A CN103118313 A CN 103118313A
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CN
China
Prior art keywords
passive radiator
sound
vibrating diaphragm
sound cavity
chamber
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.)
Pending
Application number
CN2012103973009A
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Chinese (zh)
Inventor
冯健宏
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ZTE Corp
Original Assignee
ZTE Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN2012103973009A priority Critical patent/CN103118313A/en
Publication of CN103118313A publication Critical patent/CN103118313A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the technical field of mobile terminals, in particular to a sound cavity, a sound cavity system and a mobile terminal. The sound cavity, the sound cavity system and the mobile terminal are used for improving playing effects of a low and medium frequency in the airtight sound cavity and improving tone quality of the mobile terminal. The sound cavity comprises a shell body and a passive radiator vibrating diaphragm, wherein the shell body is provided with a loudspeaker sound-out hole and a passive radiator open hole and the passive radiator vibrating diaphragm is used for covering the passive radiator open hole. Curved loops are arranged around the passive radiator vibrating diaphragm. The passive radiator vibrating diaphragm is used as a passive radiating sound source of the sound cavity. Because inner space of the sound cavity is not occupied by the passive radiator vibrating diaphragm, the inner space of the sound cavity can be utilized in maximum limit. Therefore, the playing effects of the low and medium frequency of the sound cavity can be improved and the tone quality of the mobile terminal can be improved. The invention further discloses a sound cavity system at the same time. The sound cavity system is provided with the sound cavity which has above characteristics. The invention further discloses a mobile terminal, and the mobile terminal is provided with the sound cavity system which has above characteristics.

Description

A kind of sound chamber, sound chamber system and mobile terminal
Technical field
The present invention relates to technical field of mobile terminals, particularly a kind of sound chamber, sound chamber system and mobile terminal.
Background technology
Along with the extensive use of mobile phone, mobile phone tonequality is had higher requirement; Wherein affect a structure that key factor is mobile phone sound chamber of mobile phone tonequality, in order to obtain low-frequency effect and larger loudness preferably, the airtight audio cavity structure of the most employing in mobile phone sound chamber at present.
As shown in Figure 1, airtight sound chamber comprises: have the housing 10 of loud speaker sender and be arranged on the loud speaker 11 of the loud speaker sender position of housing 10; This airtight audio cavity structure utilizes housing 10 that the sound wave of loud speaker 11 former and later two directions is isolated, and disturbs in order to eliminate acoustic short circuit; But, the sound chamber of this structure is subject to unit physical size and corresponding acoustics index, can't obtain better medium and low frequency result of broadcast, causes mobile phone to play tone color sharp-pointed, and tonequality is relatively poor.Particularly under the development trend of handset structure ultrathin, the volume size in mobile phone sound chamber also reduces thereupon, to identical loudspeaker unit, along with the reduction of the airtight sound of mobile phone chamber volume, the medium and low frequency result of broadcast in mobile phone sound chamber is variation thereupon also, thereby affects the tonequality of mobile phone.
Summary of the invention
The object of the present invention is to provide a kind of sound chamber, be used for improving the medium and low frequency result of broadcast in airtight sound chamber, improve the tonequality of mobile terminal.
To achieve these goals, the invention provides following technical scheme:
A kind of sound chamber comprises:
Housing with loud speaker sender and passive radiator perforate;
The passive radiator vibrating diaphragm covers described passive radiator perforate, and described passive radiator vibrating diaphragm periphery has ring.
Preferably, described passive radiator vibrating diaphragm is arc-shaped structure vibrating diaphragm or the slab construction vibrating diaphragm with stiffening plate.
Preferably, described passive radiator vibrating diaphragm is hot-forming.
Preferably, described passive radiator vibrating diaphragm and described housing are the integral structure of in-mode inserts injection mo(u)lding.
The present invention also provides a kind of sound chamber system simultaneously, comprising:
Sound chamber with above-mentioned technical characterictic;
Be fixedly mounted on the housing in described sound chamber, form the cover plate of airtight chamber with described housing;
And be fixedly mounted on loud speaker between described cover plate and described loud speaker sender.
Preferably, described loud speaker is tightly connected by foam and described loud speaker sender.
The present invention also provides a kind of mobile terminal simultaneously, comprising: fuselage and be arranged on the sound chamber system that has above-mentioned technical characterictic in described fuselage.
In the present invention, the passive radiator vibrating diaphragm is as the passive radiation sound generation source in sound chamber, cover in the passive radiator perforate of housing, do not take the inner space in sound chamber because of the passive radiator vibrating diaphragm, and the size of the inner space in sound chamber directly affects the medium and low frequency effect in sound chamber, the inner space in relative larger sound chamber, the medium and low frequency result of broadcast is better.Therefore, compare with the independent passive radiator parts that adopt similar loudspeaker unit, it is less that the passive radiator vibrating diaphragm takies the inner space in sound chamber, in the sound chamber of same structure, adopt above-mentioned passive radiator vibrating diaphragm can utilize to greatest extent the inner space in sound chamber, under corresponding design, improve the medium and low frequency result of broadcast in sound chamber, improved the tonequality of mobile terminal.
Description of drawings
Fig. 1 is the cutaway view in airtight sound chamber in prior art;
Fig. 2 is the cutaway view in embodiment of the present invention middle pitch chamber;
Fig. 3 is the structural representation of a kind of passive radiator vibrating diaphragm in Fig. 2;
Fig. 4 is the structural representation of another kind of passive radiator vibrating diaphragm in Fig. 2;
Fig. 5 is the cutaway view of embodiment of the present invention middle pitch chamber system.
Embodiment
Miniaturization, ultrathin development along with mobile terminal structure, the sound chamber volume that is applied on mobile terminal also reduces thereupon, for identical loudspeaker unit, reduction along with the airtight sound of mobile phone chamber volume, the medium and low frequency result of broadcast in mobile terminal sound chamber is variation thereupon, thereby affects the tonequality of mobile terminal.
In view of this, the invention provides a kind of improved technical scheme, increase passive radiator in the system of the airtight sound of loud speaker chamber, with the passive radiation sound generation source of passive radiator vibrating diaphragm as the sound chamber, replace the passive radiator monomer, do not take the inner space in sound chamber because of the passive radiator vibrating diaphragm, can utilize to greatest extent the inner space in sound chamber, and play scope by the low frequency that the passive radiator vibrating diaphragm is expanded the sound chamber, improve the medium and low frequency result of broadcast in airtight sound chamber, thereby improve the tonequality of mobile terminal.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with Figure of description, the embodiment of the present invention is described in detail.
As shown in Figure 2, be the cutaway view in embodiment of the present invention middle pitch chamber.This sound chamber comprises:
Housing 30 with loud speaker sender 32 and passive radiator perforate 31;
Passive radiation vibrating diaphragm 40 cover passive radiator perforate 31, and described passive radiator vibrating diaphragm periphery has ring.
In the present embodiment, adopt the passive radiator vibrating diaphragm 40 passive radiation sound generation source as the sound chamber, concrete a kind of passive radiator vibrating diaphragm 40 as shown in Figure 3, comprise: arc-shaped structure 42 vibrating diaphragms that ring 41 is middle with being positioned at ring 41, and arc-shaped structure 42 vibrating diaphragms are recessed or protruding to housing 30; In other words, passive radiator vibrating diaphragm 40 is arc-shaped structure 42 vibrating diaphragms to housing 30 female or male, has ring 41 at the periphery of arc-shaped structure 42 vibrating diaphragms.Because passive radiator vibrating diaphragm 40 covers passive radiator perforates 31, do not take the inner space in sound chamber, and the size of the inner space in sound chamber can affect the medium and low frequency effect in sound chamber, the inner space in relative sound chamber is larger, and the medium and low frequency result of broadcast is better.Therefore, adopt the mounting structure of independent rack and sound basin to compare with the separate part passive radiator, it is less that passive radiator vibrating diaphragm 40 takies the inner space in sound chamber, can utilize to greatest extent the inner space in sound chamber, thereby improve the medium and low frequency result of broadcast in sound chamber, improved the tonequality of mobile terminal.
In the above-described embodiments, passive radiator vibrating diaphragm 40 is arc-shaped structure 42 vibrating diaphragms, and periphery has ring 41, but be not limited to this, as shown in Figure 4, passive radiator vibrating diaphragm 40 is for having the slab construction vibrating diaphragm 43 of stiffening plate 20, has ring 44 at the periphery of slab construction vibrating diaphragm 43; Wherein stiffening plate 20 can increase the rigidity of passive radiator vibrating diaphragm 40 and as counterweight, improve the sounding effect of passive radiator vibrating diaphragm 40.
Above-mentioned passive radiator vibrating diaphragm 40 covers passive radiator perforate 31, can passive radiator vibrating diaphragm 40 be covered in passive radiator perforate 31 by the mode that attaches, also can passive radiator vibrating diaphragm 40 be covered in passive radiator perforate 31 by the mode of integrated molding; Preferably, above-mentioned passive radiator vibrating diaphragm 40 and housing 30 are the integral structure of in-mode inserts injection mo(u)lding (IML), and be specific as follows:
At first by calculating and many experiments, obtain the parameters such as quality, size and compliance of the needed passive radiator vibrating diaphragm 40 of coupling particular speaker; Then the film hot compacting that will select thickness by thermoforming way goes out the passive radiator vibrating diaphragm shape with ring that design needs, and after removing some waste materials, obtains required passive radiator vibrating diaphragm 40; At last above-mentioned hot-forming good passive radiator vibrating diaphragm 40 is put into corresponding mould, then injection mo(u)lding combines passive radiation vibrating diaphragm 40 and semi-closed structure housing 30, this technique is called in-mode inserts injection mo(u)lding (IML), specifically be well known to those skilled in the art, just be not described in detail here.
As shown in Figure 5, the present invention also provides a kind of sound chamber system simultaneously, comprising: have the sound chamber of above-mentioned technical characterictic, be fixedly mounted on the housing 30 in above-mentioned sound chamber, form the cover plate 60 of airtight chamber with housing 30; And be fixedly mounted on loud speaker 50 between cover plate 60 and loud speaker sender 32.Can cover plate 60 and housing 30 be sealed connected together by foam, also can cover plate 60 and housing 30 be sealed connected together by gluing or ultrasonic bonding.
Preferably, loud speaker 50 is tightly connected by foam 70 and speaker hole 32.
The present invention also provides a kind of mobile terminal simultaneously, comprising: fuselage and be arranged on the sound chamber system that has above-mentioned technical characterictic in described fuselage, be used for improving the tonequality of mobile terminal, and preferably, above-mentioned sound chamber system is fixedly mounted on the circuit board of fuselage.It is worth mentioning that, described mobile terminal comprises: mobile phone, panel computer, MP3, MP4, GPS navigation instrument, DPF, bluetooth etc.
In sum, in sound provided by the invention chamber, increase passive radiator on airtight sound chamber, the passive radiator vibrating diaphragm is as the passive radiation sound generation source in sound chamber, cover in the passive radiator perforate of housing, do not take the inner space in sound chamber because of the passive radiator vibrating diaphragm, and the size of the inner space in sound chamber directly affects the medium and low frequency effect in sound chamber, the inner space in relative larger sound chamber, the medium and low frequency result of broadcast is better.Therefore, compare with the independent passive radiator parts that adopt similar loudspeaker unit, it is less that the passive radiator vibrating diaphragm takies the inner space in sound chamber, in the sound chamber of same structure, adopt above-mentioned passive radiator vibrating diaphragm can utilize to greatest extent the inner space in sound chamber, under corresponding design, improve the medium and low frequency result of broadcast in sound chamber, improved the tonequality of mobile terminal.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.

Claims (7)

1. a sound chamber, is characterized in that, comprising:
Housing with loud speaker sender and passive radiator perforate;
The passive radiator vibrating diaphragm covers described passive radiation perforate, and described passive radiator vibrating diaphragm periphery has ring.
2. sound as claimed in claim 1 chamber, is characterized in that, described passive radiator vibrating diaphragm is arc-shaped structure vibrating diaphragm or the slab construction vibrating diaphragm with stiffening plate.
3. sound as claimed in claim 1 or 2 chamber, is characterized in that, described passive radiator vibrating diaphragm is hot-forming.
4. sound as claimed in claim 3 chamber, is characterized in that, described passive radiator vibrating diaphragm and described housing are the integral structure of in-mode inserts injection mo(u)lding.
5. a sound chamber system, is characterized in that, comprising:
Described sound as arbitrary in claim 1-4 chamber;
Be fixedly mounted on the housing in described sound chamber, form the cover plate of airtight chamber with described housing;
And be fixedly mounted on loud speaker between described cover plate and described housing loud speaker sender.
6. sound as claimed in claim 5 chamber system, is characterized in that, described loud speaker is tightly connected by foam and described loud speaker sender.
7. a mobile terminal, is characterized in that, comprising: fuselage and being arranged on has sound as described in claim 5 or 6 chamber system in described fuselage.
CN2012103973009A 2012-10-18 2012-10-18 Sound cavity, sound cavity system and mobile terminal Pending CN103118313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012103973009A CN103118313A (en) 2012-10-18 2012-10-18 Sound cavity, sound cavity system and mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012103973009A CN103118313A (en) 2012-10-18 2012-10-18 Sound cavity, sound cavity system and mobile terminal

Publications (1)

Publication Number Publication Date
CN103118313A true CN103118313A (en) 2013-05-22

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CN2012103973009A Pending CN103118313A (en) 2012-10-18 2012-10-18 Sound cavity, sound cavity system and mobile terminal

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Country Link
CN (1) CN103118313A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104954900A (en) * 2014-03-28 2015-09-30 美律电子(惠州)有限公司 Earphone with passive diaphragm
CN105142065A (en) * 2015-08-18 2015-12-09 无锡杰夫电声有限公司 Sound box based on oppositely buckled passive radiator
CN105635919A (en) * 2016-03-23 2016-06-01 浙江全方音响科技有限公司 Anti-oblique vibration radiator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070291965A1 (en) * 2006-06-16 2007-12-20 Yamaha Corporation Loudspeaker system and loudspeaker enclosure
CN201854402U (en) * 2010-07-28 2011-06-01 北京爱德发科技有限公司 Low-frequency passive radiator
CN102387446A (en) * 2011-09-19 2012-03-21 深圳市朵唯志远科技有限公司 Sound equipment structure and electronic device using the same
CN102547539A (en) * 2011-12-31 2012-07-04 李世煌 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box
CN202406287U (en) * 2011-12-31 2012-08-29 李世煌 Ultrathin sound box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070291965A1 (en) * 2006-06-16 2007-12-20 Yamaha Corporation Loudspeaker system and loudspeaker enclosure
CN201854402U (en) * 2010-07-28 2011-06-01 北京爱德发科技有限公司 Low-frequency passive radiator
CN102387446A (en) * 2011-09-19 2012-03-21 深圳市朵唯志远科技有限公司 Sound equipment structure and electronic device using the same
CN102547539A (en) * 2011-12-31 2012-07-04 李世煌 Coaxial diaphragm loudspeaker unit and mirror coaxial diaphragm type sound box
CN202406287U (en) * 2011-12-31 2012-08-29 李世煌 Ultrathin sound box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104954900A (en) * 2014-03-28 2015-09-30 美律电子(惠州)有限公司 Earphone with passive diaphragm
CN105142065A (en) * 2015-08-18 2015-12-09 无锡杰夫电声有限公司 Sound box based on oppositely buckled passive radiator
CN105635919A (en) * 2016-03-23 2016-06-01 浙江全方音响科技有限公司 Anti-oblique vibration radiator

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Application publication date: 20130522