CN201341217Y - Omnibearing magnetic-leakage preventing ultra-thin loudspeaker - Google Patents
Omnibearing magnetic-leakage preventing ultra-thin loudspeaker Download PDFInfo
- Publication number
- CN201341217Y CN201341217Y CNU2009201125954U CN200920112595U CN201341217Y CN 201341217 Y CN201341217 Y CN 201341217Y CN U2009201125954 U CNU2009201125954 U CN U2009201125954U CN 200920112595 U CN200920112595 U CN 200920112595U CN 201341217 Y CN201341217 Y CN 201341217Y
- Authority
- CN
- China
- Prior art keywords
- phonation unit
- phonation units
- magnetic
- loudspeaker
- radome
- 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 an omnibearing magnetic-leakage preventing ultra-thin loudspeaker which comprises phonation units. The phonation units are arranged in a pair of shield covers, and magnetic fields of the shield covers have good absorbing property; each shield cover is composed of a front cover and a rear cover, elastic pads are sandwiched between the front covers and the phonation units, the phonation units are thin-type phonation units, the working principle of the phonation units is the same as that of the loudspeaker, and the shield covers which wrap the phonation units are made of metal materials. The omnibearing magnetic-leakage preventing ultra-thin loudspeaker has the characteristics of simple structure, convenient utilization, high reliability, small external dimension, high efficiency and the like.
Description
Technical field
The utility model relates to a kind of comprehensive loud speaker that prevents leakage field, is the loud speaker of a kind of green, environmental protection, health.
Background technology
Existing loud speaker comprises Microspeakers such as various earphones, receiver, and greatly part all is to be made of permanent magnet, coil and vibrating membrane.Because permanent magnet is a kind of ferromagnetic material, therefore around loud speaker, just there is stronger magnetic field.The anti-magnetic speaker of prior art also just adds a metallic shield or adds a reversed polarity magnet in magnetic circuit of loudspeaker part rear end, but this way can only be eliminated the part magnetic field of loud speaker back cavity magnetic circuit.And can not eliminate whole magnetic fields of leaking around the loud speaker.Whether the loud speaker that present science and technology also can't confirm closely, use for a long time this class to have the magnetic field external leakage is harmful to the harm that human body (particularly to infant, fetus, pregnant woman) causes actually.Therefore, best bet is eliminated this outer stray field exactly.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provide a kind of people in long-time enjoy music, do not worry that the baby during it is specially adapted to prenatal culture and grows up early teaches use because of the magnetic field leakage field produces the anti-leakage field ultrathin loudspeaker of omnidirectional that health is existed certain injury; Appearance of the present utility model also overcome conventional loudspeakers in some special industry and place (as Medical Devices, laboratory etc.) to the magnetic field requirement.
The purpose of this utility model is finished by following technical solution, and it includes a phonation unit, and described phonation unit is placed in pair of magnetic field to have in the radome of good absorption.
Described radome is made up of front shroud and back cover, has folded up an elastic cushion between front shroud and phonation unit.Be the audio frequency characteristics of assurance loud speaker, some circular holes that on front shroud and back cover, distribute equably, Circularhole diameter is generally between the 2-3 millimeter.
Described phonation unit is the slim phonation unit identical with the speaker operation principle, and the radome of described this phonation unit of parcel is made by low carbon content magnetic conductivity good metal material.
The utility model is to be mounted with omnibearing metallic shield outside the inside loudspeakers phonation unit, this metallic shield uses the made with good magnetic property to form, the magnetic field of leaking that loud speaker is produced forms the closed-loop path in metallic shield, non-leakage magnetic field outside radome, thus realize eliminating the purpose that magnetic circuit pollutes.The utility model combines the common characteristic of general loud speaker, has characteristics such as simple in structure, easy to use, reliable, overall dimension is little, efficient height.
Description of drawings
Fig. 1 is a contour structures schematic diagram of the present utility model.
Fig. 2 is an installation easy structure schematic diagram of the present utility model.
Fig. 3 is a sectional arrangement drawing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done detailed introduction: shown in the accompanying drawing, it includes a phonation unit 1, and described phonation unit 1 is placed in pair of magnetic field to have in the radome of good absorption.
Described radome is made up of front shroud 2 and back cover 3, has folded up a cushion 4 at front shroud 2 between phonation unit 1.
Described phonation unit is the slim phonation unit identical with the speaker operation principle, and the described radome of this phonation unit that comprises is made by the good metal material of magnetic conductivity.
The utility model is made up of radome, phonation unit 1, cushion 4 etc.The operation principle of described phonation unit 1 is identical with market mainstream loud speaker phonation unit operation principle, but for anti-fully leakage field, phonation unit is placed in radome inside, is covered fully by radome, sees shown in the accompanying drawing 2.
The utility model is when work, the leakage field that phonation unit 1 is produced is fully in the inner closed-loop path that forms of radome, because the radome that the utility model adopted is made by metal material, because of metal material has optimum absorbability to magnetic field, so the magnetic field that phonation unit produced can't leak into the utility model outside.
Radome described in the utility model is made up of front shroud 2 and back cover 3 respectively, cooperates the phonation unit needs fully, thereby has avoided because of the blocked up defective of loud speaker that radome causes is installed.
The utility model with metallic shield, do not influence the electroacoustic performance of loud speaker, do not influence outward appearance, can not bring any inconvenience fully to the user who uses this product.
Cause the utlity model has ultra-thin characteristic, thereby applicable to general Microspeaker institute application, as earphone, healthy music pillow etc.
Claims (3)
1, the anti-leakage field ultrathin loudspeaker of a kind of omnidirectional, it includes a phonation unit, it is characterized in that described phonation unit (1) is placed in pair of magnetic field and has in the radome of good absorption.
2, the anti-leakage field ultrathin loudspeaker of omnidirectional according to claim 1 is characterized in that described radome is made up of front shroud (2) and back cover (3), has folded up a cushion (4) between front shroud (2) and phonation unit (1).
3, the anti-leakage field ultrathin loudspeaker of omnidirectional according to claim 1 and 2 is characterized in that described phonation unit (1) is the slim phonation unit identical with the speaker operation principle, and the radome of this phonation unit of described cladding (1) is made by metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201125954U CN201341217Y (en) | 2009-01-15 | 2009-01-15 | Omnibearing magnetic-leakage preventing ultra-thin loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201125954U CN201341217Y (en) | 2009-01-15 | 2009-01-15 | Omnibearing magnetic-leakage preventing ultra-thin loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201341217Y true CN201341217Y (en) | 2009-11-04 |
Family
ID=41236759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201125954U Expired - Fee Related CN201341217Y (en) | 2009-01-15 | 2009-01-15 | Omnibearing magnetic-leakage preventing ultra-thin loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201341217Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881194A (en) * | 2012-09-21 | 2013-01-16 | 天津朝海科技有限公司 | Electromagnetic-radiation free antenatal training equipment with volume and audio control functions |
| CN103809677A (en) * | 2012-11-12 | 2014-05-21 | 全艺电子(昆山)有限公司 | Notebook computer speaker provided with magnetic leakage prevention device |
-
2009
- 2009-01-15 CN CNU2009201125954U patent/CN201341217Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881194A (en) * | 2012-09-21 | 2013-01-16 | 天津朝海科技有限公司 | Electromagnetic-radiation free antenatal training equipment with volume and audio control functions |
| CN103809677A (en) * | 2012-11-12 | 2014-05-21 | 全艺电子(昆山)有限公司 | Notebook computer speaker provided with magnetic leakage prevention device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20140115 |