CN201435820Y - Miniature acoustic generator - Google Patents
Miniature acoustic generator Download PDFInfo
- Publication number
- CN201435820Y CN201435820Y CN2009201313807U CN200920131380U CN201435820Y CN 201435820 Y CN201435820 Y CN 201435820Y CN 2009201313807 U CN2009201313807 U CN 2009201313807U CN 200920131380 U CN200920131380 U CN 200920131380U CN 201435820 Y CN201435820 Y CN 201435820Y
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- CN
- China
- Prior art keywords
- circuit system
- magnetic circuit
- magnet steel
- lower plate
- clamping plate
- 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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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The utility model provides a miniature acoustic generator, which comprises a magnetic circuit system and a frame with a containing hole, wherein the magnetic circuit system includes a T-shaped lower clamping plate, magnetic steel and an upper clamping plate. A first step and a second step are distanced at certain intervals and arranged on the lateral wall of the containing hole of the frame; the lower clamping plate is positioned on the second step; the upper clamping plate is positioned on the first step; the magnetic steel contained between the first step and the second step is sleeved on the T-shaped lower clamping plate through a through hole. Compared with the prior art, the miniature acoustic generator leads the structures of the magnetic circuit system and the frame to be more compact, and the combination of the magnetic circuit system and the frame is enabled to be closer. Accordingly, when the generator falls down or runs up against external pressure, the structure of the generator is unaffected, namely, the pressure-resistant and anti-dropping capabilities of the generator are strengthened.
Description
[technical field]
The utility model relates to a kind of minitype acoustic generator.
[background technology]
Minitype acoustic generator is widely used in portable electronic equipments such as mobile phone, notebook computer, hearing aids.Along with fast development, the people of these portable electronic equipments are more and more stronger to its functional requirement, the also corresponding development apace of the mini-sound device that is applied thereon.
At present, the mini-sound device of dependency structure comprises the loam cake that has the basin frame of accommodating cavity, joins with the basin frame and be provided with hole, and basin frame and loam cake form a cavity volume.Be provided with the magnetic circuit system that is contained in the basin frame, the voice coil loudspeaker voice coil that is connected with vibrating diaphragm in this cavity volume, voice coil loudspeaker voice coil is suspended in the magnetic gap of described magnetic circuit system, magnetic circuit system is the external magnetic circuit system, comprise: the T-shape lower plate, all have the magnet steel and the train wheel bridge of through hole, magnet steel and train wheel bridge all are set on the T-shape lower plate by through hole and form magnetic gap with it.The mini-sound device of this structure exists not enough, and the external magnetic circuit system generally is installed in the basin frame by the glue gummed, its anti-drop and compressive resistance indifferent.
Thereby, being necessary to study a kind of new minitype acoustic generator, the compressive resistance of its magnetic circuit system and anti-drop ability are improved.
[utility model content]
The technical problem that the utility model need solve provides a kind of anti-compressive resistance, anti-anti-drop minitype acoustic generator.
According to the above-mentioned technical problem that needs solution, designed a kind of minitype acoustic generator, comprise the basin frame and the magnetic circuit system that are provided with accepting hole, described magnetic circuit system comprises: T type lower plate, magnet steel, train wheel bridge, train wheel bridge and magnet steel are equipped with the through hole of mutual correspondence, the sidewall of described basin frame accepting hole is provided with first step and the second step that keeps at a certain distance away, lower plate is positioned on the second step, train wheel bridge is positioned on the first step, magnet steel is contained between first step and the second step, and by through hole be enclosed within on the T type lower plate and and T type lower plate between be formed with magnetic gap.
Further improve as the utility model, two steps distance at interval equals the thickness of magnet steel.
Compared with prior art, two steps that the utility model basin sets up are located the train wheel bridge of magnetic circuit system and lower plate well, magnet steel is contained between two steps, such structure makes the more compact structure of magnetic circuit system and basin frame, between combination tightr, thereby, when product falls or meet with ambient pressure, the structure of product can not received influence, and promptly its compressive resistance, anti-drop ability are strengthened.
[description of drawings]
Fig. 1 is the exploded of the utility model minitype acoustic generator;
Fig. 2 is the complete section schematic diagram of the utility model minitype acoustic generator.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, the utility model minitype acoustic generator comprises basin frame 20 and loam cake 10, is contained in magnetic circuit system and vibrational system in the basin frame 20.Vibrational system comprises voice coil loudspeaker voice coil 60 and the vibrating diaphragm 70 that is attached thereto.
This magnetic circuit system is the external magnetic circuit system, comprising: T type lower plate 30, magnet steel 40, train wheel bridge 50, train wheel bridge and magnet steel are equipped with the through hole (41,51) of mutual correspondence.
The intracardiac accepting hole 21 that is provided with in the basin frame 20, the sidewall of this accepting hole is provided with first step 22 and second step 23, first step 22 and the certain at interval distance of second step 23.
If shown in 2, magnetic circuit system is contained in the accepting hole of basin frame 20, and the T-shape lower plate is fixed positioned on the second step 23; Magnet steel 40 be enclosed within on the T type lower plate by the through hole on it 41 and and T type lower plate between form magnetic gap 80; Train wheel bridge is fixed positioned on the first step 22.
Tightr for magnetic circuit system is combined with the structure of basin frame, the distance of this first step and second step equals the thickness of magnet steel, and like this, train wheel bridge can link to each other with first step, also can closely link to each other with the magnet steel surface.
Two steps that the utility model basin sets up are located the train wheel bridge of magnetic circuit system and lower plate well, magnet steel is contained between two steps, such structure makes the more compact structure of magnetic circuit system and basin frame, between combination tightr, thereby, when product fell or meet with ambient pressure, the structure of product can not received influence, and promptly its compressive resistance, anti-drop ability are strengthened.
Above-described only is execution mode of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (2)
1, a kind of minitype acoustic generator, comprise the basin frame and the magnetic circuit system that are provided with accepting hole, described magnetic circuit system comprises: T type lower plate, magnet steel, train wheel bridge, train wheel bridge and magnet steel are equipped with the through hole of mutual correspondence, it is characterized in that: the sidewall of described basin frame accepting hole is provided with first step and the second step that keeps at a certain distance away, lower plate is positioned on the second step, train wheel bridge is positioned on the first step, magnet steel is contained between first step and the second step, and by through hole be enclosed within on the T type lower plate and and T type lower plate between be formed with magnetic gap.
2, minitype acoustic generator according to claim 1 is characterized in that: two steps distance at interval equals the thickness of magnet steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201313807U CN201435820Y (en) | 2009-04-30 | 2009-04-30 | Miniature acoustic generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201313807U CN201435820Y (en) | 2009-04-30 | 2009-04-30 | Miniature acoustic generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201435820Y true CN201435820Y (en) | 2010-03-31 |
Family
ID=42054634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201313807U Expired - Lifetime CN201435820Y (en) | 2009-04-30 | 2009-04-30 | Miniature acoustic generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201435820Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977339A (en) * | 2010-10-13 | 2011-02-16 | 瑞声声学科技(深圳)有限公司 | Fixing method of magnet frame and basin bracket |
-
2009
- 2009-04-30 CN CN2009201313807U patent/CN201435820Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977339A (en) * | 2010-10-13 | 2011-02-16 | 瑞声声学科技(深圳)有限公司 | Fixing method of magnet frame and basin bracket |
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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: 20100331 |