CN103517189A - Loudspeaker and terminal - Google Patents
Loudspeaker and terminal Download PDFInfo
- Publication number
- CN103517189A CN103517189A CN201210222520.8A CN201210222520A CN103517189A CN 103517189 A CN103517189 A CN 103517189A CN 201210222520 A CN201210222520 A CN 201210222520A CN 103517189 A CN103517189 A CN 103517189A
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- CN
- China
- Prior art keywords
- loud speaker
- terminal
- grounding pin
- circuit board
- magnetic
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- 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.)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/007—Protection circuits for transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The embodiment of the invention provides a loudspeaker and a terminal. When static electricity shock occurs, the loudspeaker and the terminal can prevent static electricity from entering a host computer circuit board through coils. The loudspeaker comprises a magnetic cylinder, a grounding pin is arranged on the wall of the magnetic cylinder, and the grounding pin is in ground connection. The terminal comprises the host computer circuit board, and further comprises the loudspeaker with the grounding pin arranged on the wall of the magnetic cylinder. The grounding pin of the loudspeaker and the grounding point on the host computer circuit board are connected to form ground connection.
Description
Technical field
The present invention relates to technical field of communication, especially relate to a kind of loud speaker and terminal.
Background technology
More and more integrated along with chip manufacturing, miniaturization, chip itself to the protective capacities of static also more and more a little less than, on appliance arrangement, the position that hit by exterior static to some, circuit level protection only can not satisfy the demands.
Loud speaker, English full name is Speaker, a kind of exactly device that can suffer exterior static hit position that is designed with.Common Speaker is when being hit by static, and static can be got to coil by jumping electricity, and enters the host circuit board in terminal from coil, in chip protective capacities deficiency, can cause Speaker to park, even defective chip.In order to protect chip, at present, at chip, to the circuit of Speaker, increase electrostatic protection device, can put into practice discovery, there is following shortcoming in this scheme:
1, the impedance on voice band line can not be too high, the too high intensity that can affect audio signal.Thereby the shunting of electrostatic protection device is limited in one's ability, limited to the protective capability of late-class circuit and chip.
2, the protective capacities of electrostatic protection device itself is limited, not high to the degree of protection of Speaker late-class circuit and chip.
Summary of the invention
The embodiment of the present invention provides a kind of loud speaker and terminal, when hit by static, can avoid static to enter host circuit board by coil.
In view of this, the embodiment of the present invention provides respectively:
, comprise magnetic cylinder, on the magnetic casing wall of described magnetic cylinder, be provided with grounding pin, described grounding pin ground connection.
, comprise host circuit board, also comprise loud speaker as above, the grounding pin on described loud speaker is connected with the earth point of host circuit board with being connected to form.
, comprise outer cover metal part, also comprise loud speaker as above, the grounding pin on described loud speaker is connected with outer cover metal part with being connected to form.
The embodiment of the present invention also provides a kind of terminal, comprises host circuit board and loud speaker, on described host circuit board, is provided with earth point, described earth point ground connection, and be connected with the magnetic casing wall of described loud speaker with being connected to form.
The embodiment of the present invention also provides a kind of terminal, comprises outer cover metal part and loud speaker, and described outer cover metal part is connected with the magnetic casing wall of described loud speaker with being connected to form.
As can be seen from the above technical solutions; the loud speaker that the embodiment of the present invention provides and terminal; by grounding pin being set on the magnetic casing wall at inside loudspeakers magnetic cylinder; and this grounding pin ground connection; so that when hit by static, static passes through this grounding pin by electrostatic leakage extremely, thereby can protect the coil in magnetic cylinder; avoid static to enter the host circuit board in terminal by coil, protected chip.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing of embodiment being described to required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of a kind of loud speaker in prior art;
Fig. 2 is the electrostatic leakage schematic diagram of loud speaker in prior art;
The structural representation of a kind of loud speaker that Fig. 3 provides for the embodiment of the present invention;
The electrostatic leakage schematic diagram of a kind of loud speaker that Fig. 4 provides for the embodiment of the present invention;
The structural representation of a kind of terminal that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the another kind of terminal that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the another kind of terminal that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the another kind of terminal that Fig. 8 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of loud speaker and terminal, when hit by static, can avoid static to enter host circuit board by coil.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making all other embodiment that obtain under creative work prerequisite, belong to the scope of protection of the invention.
In order to understand better technical scheme of the present invention, below first existing loud speaker is done to a simple analytic explanation: in common loud speaker (being Speaker) 1 structure, comprise shell 14, magnetic cylinder 11 and vibrating membrane 17, can be with reference to figure 1, Fig. 1 is the structural representation of a kind of loud speaker 1 of the prior art, wherein, magnetic cylinder 11 refers to the interior metallic cavity around arranging in loud speaker 1, magnetic cylinder 11 the insides are a magnet 12, magnetic cylinder 11 is used for protecting magnet 12, magnet 12 outsides are also around coil 13, coil 13 bottoms are provided with two outlet points 16, and magnetic cylinder 11 is floating ground structure, not with any circuit part overlap joint, usually, on loud speaker 1 shell 14, can be provided with two shell foots 15, these two shell foots 15 are actually audio input interface, a pair of differential signal input interface namely, can be in the lump with reference to figure 2, wherein, a shell foot is connected in audio frequency positive signal (the Speaker positive of host circuit on-board speaker in an outlet point and terminal, referred to as Speaker_p) between 52, another shell foot is connected between the audio frequency negative signal line (Speaker negative, referred to as Speaker_n) 51 of another outlet point and loud speaker.
Be directed to the problem of the electrostatic leakage of existing loud speaker 1 existence, the embodiment of the present invention provides a kind of loud speaker 2, please refer to Fig. 3, Fig. 3 is the structural representation of this loud speaker 2, this loud speaker 2 comprises magnetic cylinder 21, wherein, on the magnetic casing wall of described magnetic cylinder 21, be provided with grounding pin 211, described grounding pin 211 ground connection.
In addition, these loud speaker 2 inside also comprise magnet 22, coil 23, shell 24, audio input interface 25, outlet point 26 and vibrating membrane 27.
From the above; the loud speaker 2 that the embodiment of the present invention provides; by grounding pin 211 being set on the magnetic casing wall at loud speaker 2 inner magnet cylinders 21; and these grounding pin 211 ground connection; so that when hit by static, static passes through this grounding pin 211 by electrostatic leakage extremely, thereby can protect the coil 23 of 21 li, magnetic cylinder; avoid static to enter the host circuit board in terminal by coil 23, protected chip.
Preferably, described grounding pin 211 can overlap by shell fragment, or welding, or riveted, or the mode ground connection of conducting foam overlap joint.
Further, Fig. 3 is the schematic diagram that grounding pin 211 adopts shell fragment overlapping mode, be that grounding pin on magnetic cylinder 1 211 is by least one metal shell foot 212, metal shell foot 212 passes through engage pressure with host circuit board or terminal structure Shang ground area in terminal, can be to fix by the screw of machine system, make metal shell foot 212 and host circuit board or terminal structure Shang ground area realize reliable overlap joint, thereby metal shell foot 212 is grounded, the grounding pin 211 on magnetic cylinder 21 is grounded by metal shell foot 212;
Secondly, welding manner can be to adopt scolding tin that host circuit board or terminal structure Shang ground area in the grounding pin on magnetic cylinder 21 211 and terminal directly or are indirectly welded; Riveted mode can be to adopt latch to engage between the ground area of host circuit board or terminal structure in grounding pin 211 on magnetic cylinder 21 and terminal; And conducting foam overlap joint can be to paste conducting foam between the ground area of host circuit board or terminal structure in grounding pin 211 on magnetic cylinder 21 and terminal, by compression conductive foam, overlap.
Preferably, described grounding pin 211 also can be by the overlapping mode ground connection of the electronic devices such as serial connection electric capacity or resistance or inductance or magnetic bead, for example, between the grounding pin on magnetic cylinder 21 211 and host circuit board in terminal or terminal structure Shang ground area, be connected in series the electronic devices such as electric capacity or resistance or inductance or magnetic bead.
Preferably, described grounding pin 211 can be arranged at magnetic casing wall bottom, and as shown in Figure 3, the setting of grounding pin 211 can not take the space of magnetic casing wall surrounding; Be understandable that, described grounding pin 211 also can be arranged at other places of magnetic casing wall, as long as this grounding pin 211 is grounded with the interior host circuit board of terminal or terminal structure Shang ground area, does not do concrete restriction herein.
The loud speaker 2 providing for the embodiment of the present invention, when hit by static, static can be jumped electricity by vibrating membrane 27 and be got to magnetic cylinder 21, and magnetic cylinder 21 is by grounding pin 211 and earth point (GND) 3 overlap joints, by electrostatic leakage, to ground, its electrostatic leakage schematic diagram can be as shown in Figure 4.Earth point is herein identical with the function of grounding pin, is ground connection effect.
From the above; the loud speaker 2 that the embodiment of the present invention provides; by grounding pin 211 being set on the magnetic casing wall at loud speaker 2 inner magnet cylinders 21; and these grounding pin 211 ground connection; so that when hit by static, static passes through this grounding pin 211 by electrostatic leakage extremely, thereby can protect the coil 23 of 21 li, magnetic cylinder; avoid static to enter the host circuit board in terminal by coil 23, protected chip.
For ease of better implementing the technical scheme of the embodiment of the present invention, the embodiment of the present invention also provides associated device.
Please refer to Fig. 5, Fig. 5 is the structural representation of this terminal, and wherein, this terminal comprises host circuit board, the described loud speaker 2 providing in the embodiment of the present invention is also provided, the grounding pin 211 on described loud speaker 2 is connected with the earth point 41 of host circuit board 4 with being connected to form.
Be understandable that, the earth point 41 of host circuit board 4 can be the equal of host circuit board Shang ground area; Please also refer to Fig. 3 and Fig. 4, described in above-mentioned loud speaker 2 embodiment, the grounding pin 211 on loud speaker 2 magnetic casing walls can be grounded by shell fragment overlapping mode;
In some embodiments, grounding pin 211 on loud speaker 2 magnetic casing walls also can be by welding, or riveted, or the mode of conducting foam overlap joint is connected with host circuit board 4 Shang ground areas, or be grounded by being connected in series the electronic devices such as electric capacity or resistance or inductance or magnetic bead between the grounding pin 211 on magnetic cylinder 21 and host circuit board 4 Shang ground areas.
From the above; the terminal that the embodiment of the present invention provides; comprise loud speaker 2; this terminal is by the magnetic casing wall at loud speaker 2 inner magnet cylinders 21, grounding pin 211 being set, and these grounding pin 211 ground connection, so that when hit by static; static by grounding pin 211 by electrostatic leakage extremely; thereby can protect the coil 23 of 21 li, magnetic cylinder, avoid static to enter the host circuit board 4 in terminal by coil 23, protect chip.
The embodiment of the present invention also provides another kind of terminal, please refer to Fig. 6, Fig. 6 is the structural representation of this terminal, wherein, this terminal comprises outer cover metal part 61, the described loud speaker 2 providing in the embodiment of the present invention is also provided, the grounding pin 211 on described loud speaker 2 is connected with outer cover metal part 61 with being connected to form.
Be understandable that, the outer cover metal part 61 of terminal enclosure 6 can be the equal of ground area or earth point, please also refer to Fig. 3 and Fig. 4, described in above-mentioned loud speaker 2 embodiment, the grounding pin 211 on loud speaker 2 magnetic casing walls can be grounded by shell fragment overlapping mode;
In some embodiments, also can be by welding, or riveted, or the mode of conducting foam overlap joint is connected with outer cover metal part 61, or is grounded by being connected in series the electronic devices such as electric capacity or resistance or inductance or magnetic bead between the grounding pin 211 on magnetic cylinder 21 and outer cover metal part 61.
From the above; the terminal that the embodiment of the present invention provides; comprise loud speaker 2; this terminal is by the magnetic casing wall at loud speaker 2 inner magnet cylinders 21, grounding pin 211 being set, and these grounding pin 211 ground connection, so that when hit by static; static by grounding pin 211 by electrostatic leakage extremely; thereby can protect the coil 23 of 21 li, magnetic cylinder, avoid static to enter the host circuit board 4 in terminal by coil 23, protect chip.
The embodiment of the present invention also provides another kind of terminal, please refer to Fig. 7, Fig. 7 is the structural representation of this terminal, this terminal comprises host circuit board 4 and loud speaker 1, wherein, on described host circuit board 4, be provided with earth point 41, described earth point 41 ground connection, and be connected with the magnetic casing wall of described loud speaker 1 with being connected to form.
Be understandable that, the earth point 41 of host circuit board 4 can be the equal of host circuit board 4 Shang ground areas;
Preferably, as shown in Figure 7, between loud speaker 1 magnetic casing wall and host circuit board 4 Shang ground areas, can be grounded by shell fragment 7 overlapping modes, in some embodiments, also can pass through welding, or riveted, or the mode of conducting foam overlap joint is grounded; Also can be by being grounded being connected in series the electronic devices such as electric capacity or resistance or inductance or magnetic bead between magnetic casing wall and host circuit board 4 Shang ground areas.
From the above; the terminal that the embodiment of the present invention provides; comprise loud speaker 1; this terminal is by be provided with earth point 41 on host circuit board 4, and these earth point 41 ground connection, so that when hit by static; static by earth point 41 by electrostatic leakage extremely; thereby can protect the coil 13 of 11 li, magnetic cylinder, avoid static to enter the host circuit board 4 in terminal by coil 13, protect chip.
The embodiment of the present invention also provides another kind of terminal, please refer to Fig. 8, the structural representation that Fig. 8 is this terminal, and this terminal comprises outer cover metal part 61 and loud speaker 1, wherein, described outer cover metal part 61 is connected with the magnetic casing wall of described loud speaker 1 with being connected to form.
Be understandable that, the outer cover metal part 61 of terminal enclosure 6 can be the equal of ground area or earth point;
Preferably, as shown in Figure 8, between loud speaker 1 magnetic casing wall and outer cover metal part 61, can be grounded by shell fragment 7 overlapping modes, in some embodiments, also can pass through welding, or riveted, or the mode of conducting foam overlap joint is grounded; Also can be by magnetic casing wall with on outer cover metal part 61 between be connected in series the electronic devices such as electric capacity or resistance or inductance or magnetic bead and be grounded.
From the above; the terminal that the embodiment of the present invention provides; comprise loud speaker 1; the outer cover metal part 61 of this terminal can be the equal of ground area or earth point, and is connected with the magnetic casing wall of described loud speaker 1 with being connected to form, so that when hit by static; static by outer cover metal part 61 by electrostatic leakage extremely; thereby can protect the coil 13 of 11 li, magnetic cylinder, avoid static to enter the host circuit board 4 in terminal by coil 13, protect chip.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is to come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Above a kind of loud speaker provided by the present invention and terminal are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a loud speaker, comprises magnetic cylinder, it is characterized in that,
On the magnetic casing wall of described magnetic cylinder, be provided with grounding pin, described grounding pin ground connection.
2. loud speaker according to claim 1, is characterized in that,
Described grounding pin overlaps by shell fragment or the mode ground connection of welding or riveted or conducting foam overlap joint.
3. loud speaker according to claim 1, is characterized in that,
Described grounding pin is by the mode ground connection of serial connection electric capacity or resistance or inductance or magnetic bead.
4. according to the loud speaker described in claims 1 to 3 any one, it is characterized in that,
Described grounding pin is arranged at magnetic casing wall bottom.
5. a terminal, comprises host circuit board, it is characterized in that, also comprises loud speaker as claimed in claim 1, and the grounding pin on described loud speaker is connected with the earth point of host circuit board with being connected to form.
6. a terminal, comprises outer cover metal part, it is characterized in that, also comprises loud speaker as claimed in claim 1, and the grounding pin on described loud speaker is connected with outer cover metal part with being connected to form.
7. a terminal, comprises host circuit board and loud speaker, it is characterized in that,
On described host circuit board, be provided with earth point, described earth point ground connection, and be connected with the magnetic casing wall of described loud speaker with being connected to form.
8. a terminal, comprises outer cover metal part and loud speaker, it is characterized in that,
Described outer cover metal part is connected with the magnetic casing wall of described loud speaker with being connected to form.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222520.8A CN103517189B (en) | 2012-06-29 | 2012-06-29 | A kind of loudspeaker and terminal |
| PCT/CN2013/078268 WO2014000677A1 (en) | 2012-06-29 | 2013-06-28 | Loudspeaker and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210222520.8A CN103517189B (en) | 2012-06-29 | 2012-06-29 | A kind of loudspeaker and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103517189A true CN103517189A (en) | 2014-01-15 |
| CN103517189B CN103517189B (en) | 2017-08-11 |
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ID=49782264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210222520.8A Active CN103517189B (en) | 2012-06-29 | 2012-06-29 | A kind of loudspeaker and terminal |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103517189B (en) |
| WO (1) | WO2014000677A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258142A1 (en) * | 2019-06-27 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1878426A (en) * | 2005-06-07 | 2006-12-13 | 日本电产鸽株式会社 | Speaker |
| US20090041290A1 (en) * | 2007-08-07 | 2009-02-12 | Cotron Corporation | Earphone speaker with esd protection |
| CN201557318U (en) * | 2009-11-20 | 2010-08-18 | 惠州Tcl移动通信有限公司 | Antistatic device at mobilephone loudspeaker |
| CN201781274U (en) * | 2010-07-30 | 2011-03-30 | 惠州Tcl移动通信有限公司 | Mobile terminal and electrostatic protection circuit thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI118030B (en) * | 2003-03-12 | 2007-05-31 | Pasi Veli Matias Nuutinmaeki | A method for measuring the movement of a speaker element and a speaker with motion measurement |
| CN102026077A (en) * | 2009-09-21 | 2011-04-20 | 财团法人工业技术研究院 | Flat speaker structure |
| CN102143667B (en) * | 2010-01-29 | 2014-05-28 | 宏达国际电子股份有限公司 | Electronic device |
-
2012
- 2012-06-29 CN CN201210222520.8A patent/CN103517189B/en active Active
-
2013
- 2013-06-28 WO PCT/CN2013/078268 patent/WO2014000677A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1878426A (en) * | 2005-06-07 | 2006-12-13 | 日本电产鸽株式会社 | Speaker |
| US20090041290A1 (en) * | 2007-08-07 | 2009-02-12 | Cotron Corporation | Earphone speaker with esd protection |
| CN201557318U (en) * | 2009-11-20 | 2010-08-18 | 惠州Tcl移动通信有限公司 | Antistatic device at mobilephone loudspeaker |
| CN201781274U (en) * | 2010-07-30 | 2011-03-30 | 惠州Tcl移动通信有限公司 | Mobile terminal and electrostatic protection circuit thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258142A1 (en) * | 2019-06-27 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Sound producing device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2014000677A1 (en) | 2014-01-03 |
| CN103517189B (en) | 2017-08-11 |
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Effective date of registration: 20171106 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: HUAWEI terminal (Dongguan) Co., Ltd. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: Huawei Device Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |