CN201662987U - Miniature built-in oscillating source SMD buzzer - Google Patents
Miniature built-in oscillating source SMD buzzer Download PDFInfo
- Publication number
- CN201662987U CN201662987U CN2010201097143U CN201020109714U CN201662987U CN 201662987 U CN201662987 U CN 201662987U CN 2010201097143 U CN2010201097143 U CN 2010201097143U CN 201020109714 U CN201020109714 U CN 201020109714U CN 201662987 U CN201662987 U CN 201662987U
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- vibrating diaphragm
- hummer
- smd
- miniature
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Abstract
The utility model relates to a miniature built-in oscillating source SMD buzzer installed on a miniature printed circuit board. The SMD buzzer comprises a base and a casing, wherein a separating device for an inner resonant cavity and an outer resonant cavity is arranged in the base, a vibrating diaphragm is arranged on the separating device, a clearance magnetism supply device and a permanent magnet are respectively arranged in the inner resonant cavity, a connecting insert is arranged on the base and connected with the clearance magnetism supply device, the thickness of the vibrating diaphragm ranges from 0.018 mm to 0.022 mm, and the vibrating diaphragm is provided with two arc-shaped ends and a rectangular middle part. The utility model has the benefits that the sounding effect of the miniature buzzer is enhanced when the volume of the buzzer is reduced, therefore, the miniature buzzer can be applied to the miniature printed circuit board.
Description
Technical field
The utility model relates to a kind of SMD hummer of miniature built-in oscillation source that can be installed on the small-print wiring board.
Background technology
Now, along with science and technology development, various electronic devices and components are in order to carry out the robotization assembling, and make the standardization chip, the mounting process of hummer electronic devices and components changes into the assembling mode that is same as other electronic devices and components from original manual welding, and directly be welded on the printed-wiring board (PWB) by high temperature tin stove by means of material such as solder(ing) paste, because original hummer volume is bigger, on micro-circuit board, be difficult to use and welding, such as MP3, bluetooth, the circuit board that miniature electronic products such as PDA are used can't use the hummer of existing large volume, then some manufacturer makes the less hummer of volume to hummer, but the less most important phonation unit vibrating diaphragm of hummer of this kind volume still is according to original thickness and shape manufacturing, thickness is in 0.05 millimeter, be shaped as the Round Membranes sheet, because the energy of the hummer each side of small size is all on the low side, still select the vibrating diaphragm of 0.05 millimeter thickness for use, used energy does not reach the vibration requirement that drives vibrating diaphragm, and the relative small size hummer vibration of circular vibrating diaphragm area small vibration weak effect, so the sounding effect of this small size hummer is also poor.
Summary of the invention
The purpose of this utility model is to provide the SMD hummer of a kind of miniature built-in oscillation source to solve in the above-mentioned technology small size hummer vibrational energy and does not reach that the vibrating diaphragm vibration requires and the shortcoming of Round Membranes sheet vibrating effect difference.
The technical scheme that realizes the utility model purpose is as follows:
The SMD hummer of miniature built-in oscillation source, comprise base, shell, the separating device that has interior resonance chamber and exterior resonant cavity in the base, vibrating diaphragm is located on this separating device, have gap magnetic generator and permanent magnet in the interior resonance chamber, have the connection inserts on the base, this connection inserts is connected with gap magnetic generator, the thickness of described vibrating diaphragm is 0.018mm to 0.022mm, and it is that arc and centre are rectangle that this vibrating diaphragm is arranged to two ends.
Described separating device is the step that the inwall sedimentation of base upper end forms, and this step is for being arc and middlely being the setting of rectangle with the corresponding two ends of vibrating diaphragm.
Described vibrating diaphragm is provided with and increases magnetic sheet.
Described permanent magnet is an annular permanent magnet, and described gap magnetic generator is located in the annular permanent magnet.
Described gap magnetic generator is a circular coil, is provided with iron core in this circular coil, and iron core is fixedly installed on the base.
Describedly increase the dead ahead that magnetic sheet is arranged on iron core.
Adopt technique scheme, the interior employing of the SMD hummer of miniature built-in oscillation source thickness is that the vibrating diaphragm of 0.018mm to 0.022mm makes the vibrational energy in the SMD hummer of miniature built-in oscillation source can drive vibrating diaphragm, it is to be the shape of rectangle in the middle of the arc that vibrating diaphragm adopts two ends, when reducing the hummer volume, increased the vibration area relatively, strengthened vibrating effect, the magnetic sheet that increases that is provided with on the vibrating diaphragm has strengthened attractive force between gap magnetic generator and the vibrating diaphragm, gap magnetic generator be circular coil pulse voltage by the time vibrating diaphragm produced the gap attract effect, iron core in the circular coil strengthens its magnetic conduction ability, effect intentionally of the present utility model is the sounding effect that has strengthened miniature hummer when reducing the hummer volume, makes miniature hummer can be applied to micro-printed circuit board.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is that the A-A of Fig. 1 is to cut-open view;
Among the figure, 1, shell, 2, pronunciation channel, 3, step, 4, base, 5, connect inserts, 6, exterior resonant cavity, 7, increase magnetic sheet, 8, vibrating diaphragm, 9, the interior resonance chamber, 10, annular permanent magnet, 11, circular coil, 12, iron core.
Embodiment
As Fig. 1, shown in Figure 2, the SMD hummer of miniature built-in oscillation source, comprise base 4, shell 1, has pronunciation channel 2 on the shell, the separating device that has interior resonance chamber 9 and exterior resonant cavity 6 in the base 4, this separating device is the step 3 that base 4 upper end inwall sedimentations form, vibrating diaphragm 8 is located on this step 3, the thickness of vibrating diaphragm 8 is 0.018mm, it is that arc and centre are the elongate in shape of rectangle that this vibrating diaphragm 8 is arranged to two ends, vibrating diaphragm 8 is provided with and increases magnetic sheet 7, has gap magnetic generator in the interior resonance chamber 9, and gap magnetic generator is a circular coil 11, be provided with iron core 12 in this circular coil 11, iron core 12 is fixedly installed on the base 4, increases the dead ahead that magnetic sheet 7 is arranged on iron core 12, has the inserts 5 of connection on the base 4, this connection inserts 5 is connected with circular coil 11, above-mentioned step 3 is for being arc and middlely being that the setting of rectangle, base 4 internal fixation have annular permanent magnet 10 that with vibrating diaphragm 8 corresponding two ends circular coil 11 is located in the annular permanent magnet 10.
Extraneous is that high level arrives the zero such Pulse Electric cycle signal of high level that arrives again giving connection inserts 5 for signal, under the high level effect, the absorption affinity of annular permanent magnet 10 has superposeed, time zero, just become the absorption affinity of having only annular permanent magnet 10, reciprocation cycle like this makes vibrating diaphragm bob and the air that compresses intra resonant cavity produces sound on step.
Claims (6)
1. the SMD hummer of miniature built-in oscillation source, comprise base, shell, the separating device that has interior resonance chamber and exterior resonant cavity in the base, vibrating diaphragm is located on this separating device, have gap magnetic generator and permanent magnet in the interior resonance chamber, have the connection inserts on the base, this connection inserts is connected with gap magnetic generator, it is characterized in that: the thickness of described vibrating diaphragm is 0.018mm to 0.022mm, and it is that arc and centre are rectangle that this vibrating diaphragm is arranged to two ends.
2. the SMD hummer of miniature built-in oscillation source according to claim 1 is characterized in that: described separating device is the step that the inwall sedimentation of base upper end forms, and this step is for being arc and middlely being the setting of rectangle with the corresponding two ends of vibrating diaphragm.
3. the SMD hummer of miniature built-in oscillation source according to claim 1 is characterized in that: described vibrating diaphragm is provided with and increases magnetic sheet.
4. the SMD hummer of miniature built-in oscillation source according to claim 1 is characterized in that: described permanent magnet is an annular permanent magnet, and described gap magnetic generator is located in the annular permanent magnet.
5. according to claim 1 or 4 any SMD hummers of described miniature built-in oscillation source, it is characterized in that: described gap magnetic generator is a circular coil, is provided with iron core in this circular coil, and iron core is fixedly installed on the base.
6. the SMD hummer of miniature built-in oscillation source according to claim 3 is characterized in that: describedly increase the dead ahead that magnetic sheet is arranged on iron core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097143U CN201662987U (en) | 2010-02-01 | 2010-02-01 | Miniature built-in oscillating source SMD buzzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201097143U CN201662987U (en) | 2010-02-01 | 2010-02-01 | Miniature built-in oscillating source SMD buzzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662987U true CN201662987U (en) | 2010-12-01 |
Family
ID=43233406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201097143U Expired - Fee Related CN201662987U (en) | 2010-02-01 | 2010-02-01 | Miniature built-in oscillating source SMD buzzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201662987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137117A (en) * | 2013-01-20 | 2013-06-05 | 汉得利（常州）电子有限公司 | Electromagnetic signal alarming device |
-
2010
- 2010-02-01 CN CN2010201097143U patent/CN201662987U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137117A (en) * | 2013-01-20 | 2013-06-05 | 汉得利（常州）电子有限公司 | Electromagnetic signal alarming device |
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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: 20101201 Termination date: 20150201 |
|
| EXPY | Termination of patent right or utility model |