CN2302625Y - Double-magnetic circuit electrodynamic loudspeaker - Google Patents
Double-magnetic circuit electrodynamic loudspeaker Download PDFInfo
- Publication number
- CN2302625Y CN2302625Y CN 97234768 CN97234768U CN2302625Y CN 2302625 Y CN2302625 Y CN 2302625Y CN 97234768 CN97234768 CN 97234768 CN 97234768 U CN97234768 U CN 97234768U CN 2302625 Y CN2302625 Y CN 2302625Y
- Authority
- CN
- China
- Prior art keywords
- shielding cover
- magnetic
- magnetic shielding
- utility
- model
- 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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Abstract
The utility model relates to a device which sounds by the vibration of a film or a similar element by using electromagnetic drive. The utility model composed of a cone bracket, a magnetic steel, a magnetic conducting column, a clamping plate, etc. is characterized in that the opening parts of a magnetic shielding cover bonded on a magnetic steel are at least respectively provided with a lug, and thus the utility model conveniently solves the problem of the falling of the magnetic shielding cover. The utility model has the characteristics of simple structure, favorable use reliability, etc.
Description
The utility model relates to and a kind ofly use Electromagnetic Drive the apparatus of sounding belongs to the sound equipment field by the vibration of film or like, relate in particular to a kind of double magnetic circuit dynamic speaker of magnetic shielding cover difficult drop-off.
Existing magnetic screen, double magnetic circuit dynamic speaker mainly are the electro-acoustic products that the audion system for television set designs.It is to add a magnetic shielding cover on the magnetic loop of ventional loudspeakers, and it can isolate the magnetic field of loud speaker, makes it avoid interference the image of television set.But the dynamic speaker of this style in process of production, and the defective that self is difficult to overcome is but arranged.For example: magnetic shielding cover in galvanizing process because of the problem of passivation or coating is thick, thin uneven, can cause magnet steel and magnetic shielding cover bonding insecure, the problem that the generation magnetic shielding cover comes off.In addition, operator's misoperation, magnet steel makes moist, the unstable properties of adhesive, and the problem that makes magnetic shielding cover come off is difficult to solve for a long time in the electroacoustic industry.Large group, major company in the domestic electroacoustic industry, all organize the professional to carry out tackling key problem and scientific research to this, also take some measures, the method of the employing spot welding that has is with magnetic shielding cover and clamping plate firm welding, what have then adopts some novel adhesives, but all because of reasons such as technology, material property and expenses, effect is unsatisfactory.For the solution of this type of problem, there are not efficient ways or measure in the world yet.Stipulate among the standard GB 9396-GB9400-88 of loud speaker that the problem that magnetic shielding cover comes off is tested with the method for fall-down test and landing test.In quality control standards (QCS), the magnetic shielding cover deciding grade and level defective of attaching most importance to that comes off, its AQL value is 0.65.But in the quality control standards (QCS) of television set system maker, magnetic shielding cover comes off deciding grade and level for critical defect, and per ten thousand loud speaker finished products only allow 1-2 and have only the magnetic shielding cover problem that comes off.The standard difference great disparity of Zhi Hanging each other, the cooperation contradiction of loud speaker manufacturer and television set system maker is difficult to avoid.
The purpose of this utility model is: provide a kind of and can effectively overcome above-mentioned defective, the double magnetic circuit dynamic speaker of magnetic shielding cover difficult drop-off.
The technical solution of the utility model is: a kind of double magnetic circuit dynamic speaker, to form by cone support, magnet steel, conducting magnetic column, clamping plate etc., and its characteristics are: the opening part that is adhered to the magnetic shielding cover of magnet steel at least respectively is provided with a lug.
Owing to adopt such scheme, be not difficult to draw as drawing a conclusion: the utility model is skillfully constructed, simple in structure, for solving the problem that magnetic shielding cover comes off, provide a practicality and fast way.
Below in conjunction with drawings and Examples the utility model is described in further detail.
Fig. 1 is a Facad structure schematic diagram of the present utility model;
Fig. 2 is a side structure schematic diagram of the present utility model;
Fig. 3 is the Facad structure schematic diagram of another embodiment of the present utility model;
Fig. 4 is the side structure schematic diagram of another embodiment of the present utility model.
Claims (3)
1. a double magnetic circuit dynamic speaker is made up of cone support, magnet steel, conducting magnetic column, clamping plate etc., and it is characterized in that: the opening part that is adhered to the magnetic shielding cover of magnet steel at least respectively is provided with a lug.
2. a kind of double magnetic circuit dynamic speaker according to claim 1 is characterized in that: described lug is a projection being located at the opening part of magnetic shielding cover.
3. a kind of double magnetic circuit dynamic speaker according to claim 1 is characterized in that: described lug is a projection and a narrower projection being located at the centre of being located at two broads of magnetic shielding cover opening part both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234768 CN2302625Y (en) | 1997-06-11 | 1997-06-11 | Double-magnetic circuit electrodynamic loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97234768 CN2302625Y (en) | 1997-06-11 | 1997-06-11 | Double-magnetic circuit electrodynamic loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302625Y true CN2302625Y (en) | 1998-12-30 |
Family
ID=33946036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97234768 Expired - Fee Related CN2302625Y (en) | 1997-06-11 | 1997-06-11 | Double-magnetic circuit electrodynamic loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302625Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11711654B2 (en) | 2018-01-08 | 2023-07-25 | Shenzhen Shokz Co., Ltd. | Bone conduction speaker |
| RU2803722C2 (en) * | 2018-01-08 | 2023-09-19 | Шэньчжэнь Шокц Ко., Лтд. | Bone conduction speaker |
-
1997
- 1997-06-11 CN CN 97234768 patent/CN2302625Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11711654B2 (en) | 2018-01-08 | 2023-07-25 | Shenzhen Shokz Co., Ltd. | Bone conduction speaker |
| US11765510B2 (en) | 2018-01-08 | 2023-09-19 | Shenzhen Shokz Co., Ltd. | Bone conduction speaker |
| RU2803722C2 (en) * | 2018-01-08 | 2023-09-19 | Шэньчжэнь Шокц Ко., Лтд. | Bone conduction speaker |
| US11778384B2 (en) | 2018-01-08 | 2023-10-03 | Shenzhen Shokz Co., Ltd. | Bone conduction speaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |