CN201150123Y - Minisize acoustic enclosure - Google Patents
Minisize acoustic enclosure Download PDFInfo
- Publication number
- CN201150123Y CN201150123Y CNU2007203028907U CN200720302890U CN201150123Y CN 201150123 Y CN201150123 Y CN 201150123Y CN U2007203028907 U CNU2007203028907 U CN U2007203028907U CN 200720302890 U CN200720302890 U CN 200720302890U CN 201150123 Y CN201150123 Y CN 201150123Y
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- CN
- China
- Prior art keywords
- box
- casing
- case lid
- voice
- vent
- 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 - Lifetime
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- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model relates to a miniature sound box, which is composed of a coil moving type loudspeaker and a sound box casing body. The sound box casing body is divided into a box cover and a box body, wherein, the box cover is combined with a rubber cushion and provided with a diaphragm vibrating hole, and the box body is combined with a magnetic cover into a whole. The miniature sound box is characterized in that the box cover is provided with a breather hole and communicated with the inner part and the outer part of the box body along a arc-shaped groove and the notch of the arc-shaped groove on the surface of the box cover. The miniature sound box can keep the acoustic characteristics of the enclosed-type sound box, and avoid the the defect that the tone quality is bad caused by the change of the air pressure generated at the inner part and the outer part of the sealing box body by the moving of the voice coil, and obtains good effect through giving a trial on the mobile phone and the portable computer.
Description
Technical field
The utility model belongs to the loud speaker group in International Patent Classification (IPC), i.e. H04R, particularly miniature loudspeaker box.
Background technology
Portable, small-sized, miniature communication, vocal music instrument or device need higher sound quality, and the loud speaker that voucher is pure can not meet the demands.So produced miniature closed audio amplifier.It is made up of coil-moving speaker and voice box casing.The magnetic cover of loud speaker is bonded to one together with magnet steel, pole piece sheet and casing, and vibrating diaphragm is combined on the vibrating diaphragm hole of case lid by support together with voice coil loudspeaker voice coil, fixes with casing then.Be bonded with rubber cushion above the case lid.This scheme has obviously been improved tonequality, brings convenience also for the assembling of communication tool.But the heat that produces during speaker operation or the variation of ambient temperature change the temperature in the voice box casing, thereby have changed the air pressure of cavity, and the closed enclosure inside and outside produces draught head, make the vibrating diaphragm of loud speaker heave or cave in, and the tonequality of audio amplifier degenerates.
The utility model content
The purpose of this utility model provides the ventilative miniature loudspeaker box of a kind of energy.
It is as follows to disclose new technical scheme:
A kind of miniature loudspeaker box is made up of the voice box casing of coil-moving speaker and sealing.Voice box casing divides case lid and casing, be bonded with rubber cushion on the case lid, the middle part all is shaped on the vibrating diaphragm hole, vibrating diaphragm and voice coil loudspeaker voice coil are fixed on the said vibrating diaphragm of the case lid hole by support, the magnetic cover of loud speaker is fixed on the casing with one heart together with magnet steel, pole piece sheet, it is characterized in that voice box casing be shaped on casing inside and outside the air-vent harmony damping slot of linking up.
Press such scheme, because air-vent has been arranged, the inside and outside draught head of casing can be reached static balancing by air-vent, and the acoustic damping characteristic of air-vent makes audio amplifier keep the acoustic characteristic of original closed audio amplifier, and this example reaches audio amplifier at f
0--in the 2K frequency range, transfer voice decay 〉=3db, and casing heating and ambient temperature cataclysm and the disadvantage of both poor sound quality is tried out in mobile phone, notebook computer and obtained good result when having avoided speaker operation.
Description of drawings
Figure be an embodiment of the utility model along the diagonal cross-sectional schematic, wherein: 1, rubber cushion 2, air-vent 3, case lid 4, casing 5, vibrating diaphragm 6, voice coil loudspeaker voice coil 7, magnetic cover 8, pole piece sheet 9, magnet steel 10, support 11, notch 12, acoustic damping groove.
Embodiment
A kind of miniature loudspeaker box is made up of the voice box casing of coil-moving speaker and sealing.Voice box casing divides case lid 3 and casing 4, be bonded with rubber cushion 1 on the case lid 3, the middle part all is shaped on the vibrating diaphragm hole, said vibrating diaphragm 5 and voice coil loudspeaker voice coil 6 are fixed on the vibrating diaphragm hole below the case lid 3 by support 10, the magnetic cover 7 of loud speaker is fixed on the casing 4 with one heart together with magnet steel 9, pole piece sheet 8, it is characterized in that voice box casing be shaped on casing inside and outside the air-vent 2 harmony damping slots 12 of linking up.
Said air-vent 2 penetrates from the last end face of case lid 3, is connected with the arc acoustic damping groove 12 and the notch 11 that are provided with on this face, and said acoustic damping groove 12 is at diagonal place corner, the parallel notch 11 that leads to along the case lid limit.
This routine air-vent 2 and notch 11 lay respectively on two limits at last end face quarter turn angle of case lid 3.
Claims (3)
1, a kind of miniature loudspeaker box is made up of coil-moving speaker and airtight voice box casing, voice box casing divides case lid (3) and casing (4), be bonded with rubber cushion (1) on the case lid (3), the middle part all is shaped on the vibrating diaphragm hole, vibrating diaphragm (5) and voice coil loudspeaker voice coil (6) are fixed on the said vibrating diaphragm of case lid (3) hole by support (10), the magnetic cover (7) of loud speaker is fixed on the casing (4) with one heart together with magnet steel (9), pole piece sheet (8), it is characterized in that voice box casing be shaped on casing inside and outside air-vent (2) the harmony damping slot (12) of linking up.
2, miniature loudspeaker box as claimed in claim 1, it is characterized in that air-vent (2) penetrates from the last end face of case lid (3), be connected with arc acoustic damping groove (12) that is provided with on this face and notch (11), said acoustic damping groove (12) is at diagonal place corner, the parallel notch (11) that leads to along the case lid limit.
3, miniature loudspeaker box as claimed in claim 1 or 2, the corner that it is characterized in that said air-vent (2) harmony damping slot (12) lay respectively on two limits at top quarter turn angle of case lid (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203028907U CN201150123Y (en) | 2007-12-11 | 2007-12-11 | Minisize acoustic enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203028907U CN201150123Y (en) | 2007-12-11 | 2007-12-11 | Minisize acoustic enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201150123Y true CN201150123Y (en) | 2008-11-12 |
Family
ID=40117894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203028907U Expired - Lifetime CN201150123Y (en) | 2007-12-11 | 2007-12-11 | Minisize acoustic enclosure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201150123Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| WO2015027496A1 (en) * | 2013-08-29 | 2015-03-05 | Liu Juntao | Mini-speaker |
| CN113099366A (en) * | 2021-04-12 | 2021-07-09 | 益阳市信维声学科技有限公司 | Loudspeaker module |
-
2007
- 2007-12-11 CN CNU2007203028907U patent/CN201150123Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103002385A (en) * | 2012-09-14 | 2013-03-27 | 精拓丽音科技（北京）有限公司 | Miniature loudspeaker module structure with adaptive pressure balancing function |
| WO2015027496A1 (en) * | 2013-08-29 | 2015-03-05 | Liu Juntao | Mini-speaker |
| CN113099366A (en) * | 2021-04-12 | 2021-07-09 | 益阳市信维声学科技有限公司 | Loudspeaker module |
| CN113099366B (en) * | 2021-04-12 | 2023-01-20 | 益阳市信维声学科技有限公司 | Loudspeaker module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081112 |