CN204069318U - Loud speaker - Google Patents
Loud speaker Download PDFInfo
- Publication number
- CN204069318U CN204069318U CN201420401800.XU CN201420401800U CN204069318U CN 204069318 U CN204069318 U CN 204069318U CN 201420401800 U CN201420401800 U CN 201420401800U CN 204069318 U CN204069318 U CN 204069318U
- Authority
- CN
- China
- Prior art keywords
- frame
- magnet steel
- loud speaker
- main magnet
- depressed part
- 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
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides a kind of loud speaker, it comprises frame, and the magnetic circuit system be contained in described frame and vibrational system, this magnetic circuit system comprises main magnet steel, be attached at the main pole core on this main magnet steel surface, and with the yoke of this main magnet steel assembly, the all sides of described main magnet steel are provided with magnetic gap, described vibrational system comprises vibrating diaphragm and one end and is immobilizated in this vibrating diaphragm other end and is suspended in voice coil loudspeaker voice coil in this magnetic gap, described frame is provided with the lower surface away from vibrating diaphragm, this lower surface is to inward side to being recessed to form depressed part, this depressed part is used for preventing frame inprocess shrinkage from causing magnetic gap to be out of shape.The loud speaker that the utility model provides, it arranges depressed part at the lower surface of frame, for the contraction produced during frame injection mo(u)lding provides certain shrink space, so not only ensure that the assembly precision of frame and yoke, and magnetic gap will be caused to be out of shape because of during frame injection mo(u)lding, the strong acoustical behavior that ensure that loud speaker.
Description
[technical field]
The utility model relates to electroacoustic transduction field, particularly relates to a kind of loud speaker.
[background technology]
Along with the fast development of wireless telecommunications, Global Mobile Phone gets more and more, and the requirement of people to mobile phone is not limited only to basic call, more requires to propose more requirements to the performance of conventional mobile phone.Especially the arrival in 3G epoch, Technology of Mobile Multimedia also develops thereupon, and a lot of mobile phone has multiple amusement function, as video playback, digital vedio recording, game, GPS navigation etc.
The Microspeaker be applied in conventional mobile phone generally all comprises frame and the magnetic circuit system be contained in frame and vibrational system, but the frame of conventional loudspeakers is generally all made up of plastic cement, certain contraction can be produced when injection mo(u)lding, like this, when yoke and the frame assembly of magnetic circuit system, be not only difficult to ensure assembly precision, and because frame is shunk, magnetic gap diminished, voice coil loudspeaker voice coil may strike frame when vibrating, thus has a strong impact on the acoustical behavior of loud speaker.
Therefore, be necessary to provide a kind of new loud speaker for above-mentioned shortcoming.
[utility model content]
The purpose of this utility model is to provide a kind of loud speaker, the contraction that the frame which solving existing loud speaker produces when injection mo(u)lding makes the assembly precision of yoke and frame be difficult to ensure, cause magnetic gap to diminish because frame is shunk simultaneously, make voice coil loudspeaker voice coil may strike frame when vibrating, thus have a strong impact on the technical problem of the acoustical behavior of loud speaker.
In order to solve the problems of the technologies described above, the utility model provides a kind of loud speaker, it comprises frame, and the magnetic circuit system be contained in described frame and vibrational system, this magnetic circuit system comprises main magnet steel, be attached at the main pole core on this main magnet steel surface, and with the yoke of this main magnet steel assembly, the all sides of described main magnet steel are provided with magnetic gap, described vibrational system comprises vibrating diaphragm and one end and is immobilizated in this vibrating diaphragm other end and is suspended in voice coil loudspeaker voice coil in this magnetic gap, described frame is provided with the lower surface away from vibrating diaphragm, this lower surface is to inward side to the depressed part be recessed to form for preventing frame inprocess shrinkage from causing magnetic gap to be out of shape.
Preferably, described frame is rectangular, and described depressed part is four and lays respectively at described frame is four corner positions.
Preferably, the short sidewall that described frame comprises long sidewall and is connected with described long sidewall, described depressed part comprises the first groove running through described long sidewall along described frame short-axis direction.
Preferably, described depressed part also comprises from described first groove and the second groove extended along described frame long axis direction.
Preferably, described magnetic circuit system also comprises the secondary magnet steel being arranged at this main magnet steel week side, and described long sidewall and short sidewall are all provided with the limiting section limiting described secondary magnet steel, and this secondary magnet steel is to the position of limiting section being provided with joint portion.
Preferably, described loud speaker is also provided with conducting terminal, and described conducting terminal part is arranged in described depressed part.
Preferably, described yoke is tabular, and it comprises central body and from outward extending long a pair alar part of this body and a pair short limb portion, described main magnet steel is incorporated into this body, and described long alar part and short limb portion are individually fixed on described secondary magnet steel.
The loud speaker that the utility model provides, it arranges depressed part at the lower surface of frame, for the contraction produced during frame injection mo(u)lding provides certain shrink space, so not only ensure that the assembly precision of frame and yoke, and magnetic gap will be caused to be out of shape because of during frame injection mo(u)lding, the strong acoustical behavior that ensure that loud speaker.
[accompanying drawing explanation]
Fig. 1 is the three-dimensional exploded view of loud speaker described in the utility model;
Fig. 2 is the installation diagram after the yoke of loud speaker shown in Fig. 1 is separated.
[embodiment]
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As illustrated in fig. 1 and 2, a kind of loud speaker 100 that the utility model provides, it comprises frame 2, be contained in magnetic circuit system 3 in described frame 2 and vibrational system 4, form the protecgulum 1 of receiving space with the assembly of described frame 2 and be installed on described frame 2 and for realizing the conducting terminal 5 that described loud speaker 100 is electrically connected with the external world.
Described magnetic circuit system 3 is for providing driving magnetic field for described vibrational system 4, and described vibrational system 4 is driven by this driving magnetic field and vibrates and produces sound.Described magnetic circuit system 3 to comprise with the yoke 30 of described frame 2 assembly, the main magnet steel 31 of assembly in the middle of described yoke 30, assembly in described yoke 30 and the secondary magnet steel 32 arranged around described main magnet steel 31 and the main pole core 33 being attached at described main magnet steel 31 and secondary magnet steel 32 surface respectively and consequent pole core 34, all sides of described main magnet steel 31 are provided with magnetic gap 35, and the gap namely between described main magnet steel 31 and secondary magnet steel 32 is magnetic gap 35.Described vibrational system 4 comprises vibrating diaphragm 40 and one end and is fixed on this vibrating diaphragm 40 other end and is suspended in voice coil loudspeaker voice coil 41 in described magnetic gap.
Described yoke 30 is in tabular, it comprises central body 300 and from outward extending long a pair alar part 301 of this body 300 and a pair short limb portion 302, described main magnet steel 31 is incorporated into this body 300, and described long alar part 301 and short limb portion 302 are individually fixed on described secondary magnet steel 32.
Described frame 2 is rectangular, it short sidewall 21 comprising long sidewall 20 and be connected with described long sidewall 20.Described frame 2 is provided with the lower surface 22 away from vibrating diaphragm 40, and this lower surface 22 is to inward side to the depressed part 23 be recessed to form for preventing frame 2 inprocess shrinkage from causing magnetic gap 35 to be out of shape.Described depressed part 23 is four and lays respectively at described frame 2 is four corner positions.Described depressed part 23 comprises the first groove 230 running through described long sidewall 20 along described frame 2 short-axis direction and the second groove 231 extended from described first groove 230 and along described frame 2 long axis direction.
Described long sidewall 20 and short sidewall 21 are all provided with the limiting section 24 limiting described secondary magnet steel 32, this secondary magnet steel 32 is to the position of limiting section 24 being provided with joint portion 320, effectively like this prevent main magnet steel 31 and the adhesive mutually of secondary magnet steel 32, improve structural stability and the assembly precision of magnetic circuit system 3 simultaneously.
Described conducting terminal 5 part is arranged in described depressed part 23.
The loud speaker 100 that the utility model provides, it arranges depressed part 23 in frame 2, for the contraction produced during frame 2 injection mo(u)lding provides certain shrink space, so not only ensure that the assembly precision of frame 2 and yoke 30, and magnetic gap 35 will be diminished because of the contraction caused during frame 2 injection mo(u)lding, placement tolerance or burr reason, the strong acoustical behavior that ensure that loud speaker 100.
Above-described is only better embodiment of the present utility model; it should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite not departing from the utility model creation design; improvement can also be made, but these all belong to protection range of the present utility model.
Claims (7)
1. a loud speaker, it comprises frame, and the magnetic circuit system be contained in described frame and vibrational system, this magnetic circuit system comprises main magnet steel, be attached at the main pole core on this main magnet steel surface, and with the yoke of this main magnet steel assembly, the all sides of described main magnet steel are provided with magnetic gap, described vibrational system comprises vibrating diaphragm and one end and is immobilizated in this vibrating diaphragm other end and is suspended in voice coil loudspeaker voice coil in this magnetic gap, it is characterized in that, described frame is provided with the lower surface away from vibrating diaphragm, this lower surface is to inward side to the depressed part be recessed to form for preventing frame inprocess shrinkage from causing magnetic gap to be out of shape.
2. loud speaker as claimed in claim 1, it is characterized in that: described frame is rectangular, described depressed part is four and lays respectively at described frame is four corner positions.
3. loud speaker as claimed in claim 1 or 2, it is characterized in that: the short sidewall that described frame comprises long sidewall and is connected with described long sidewall, described depressed part comprises the first groove running through described long sidewall along described frame short-axis direction.
4. loud speaker as claimed in claim 3, is characterized in that, described depressed part also comprises from described first groove and the second groove extended along described frame long axis direction.
5. loud speaker as claimed in claim 3, it is characterized in that, described magnetic circuit system also comprises the secondary magnet steel being arranged at this main magnet steel week side, and described long sidewall and short sidewall are all provided with the limiting section limiting described secondary magnet steel, and this secondary magnet steel is to the position of limiting section being provided with joint portion.
6. loud speaker as claimed in claim 1, it is characterized in that, described loud speaker is also provided with conducting terminal, and described conducting terminal part is arranged in described depressed part.
7. loud speaker as claimed in claim 5, it is characterized in that, described yoke is tabular, it comprises central body and from outward extending long a pair alar part of this body and a pair short limb portion, described main magnet steel is incorporated into this body, and described long alar part and short limb portion are individually fixed on described secondary magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401800.XU CN204069318U (en) | 2014-07-18 | 2014-07-18 | Loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420401800.XU CN204069318U (en) | 2014-07-18 | 2014-07-18 | Loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204069318U true CN204069318U (en) | 2014-12-31 |
Family
ID=52210754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420401800.XU Expired - Fee Related CN204069318U (en) | 2014-07-18 | 2014-07-18 | Loud speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204069318U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105491489A (en) * | 2015-12-31 | 2016-04-13 | 歌尔声学股份有限公司 | Multifunctional apparatus having vibration function and sounding function |
| WO2017071009A1 (en) * | 2015-10-27 | 2017-05-04 | 歌尔声学股份有限公司 | Speaker housing and speaker unit |
-
2014
- 2014-07-18 CN CN201420401800.XU patent/CN204069318U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017071009A1 (en) * | 2015-10-27 | 2017-05-04 | 歌尔声学股份有限公司 | Speaker housing and speaker unit |
| KR20180059511A (en) * | 2015-10-27 | 2018-06-04 | 고어텍 인크 | Speaker housing and speaker unit |
| US10306346B2 (en) | 2015-10-27 | 2019-05-28 | Goertek Inc. | Speaker housing and speaker unit |
| KR101959182B1 (en) * | 2015-10-27 | 2019-07-02 | 고어텍 인크 | Speaker housing and speaker unit |
| CN105491489A (en) * | 2015-12-31 | 2016-04-13 | 歌尔声学股份有限公司 | Multifunctional apparatus having vibration function and sounding function |
| CN105491489B (en) * | 2015-12-31 | 2019-04-23 | 歌尔股份有限公司 | Multi-function device with vibrating function and vocal function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20210718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |