CN202120602U - Piezoelectric type squealer - Google Patents
Piezoelectric type squealer Download PDFInfo
- Publication number
- CN202120602U CN202120602U CN201120238252XU CN201120238252U CN202120602U CN 202120602 U CN202120602 U CN 202120602U CN 201120238252X U CN201120238252X U CN 201120238252XU CN 201120238252 U CN201120238252 U CN 201120238252U CN 202120602 U CN202120602 U CN 202120602U
- Authority
- CN
- China
- Prior art keywords
- printed board
- shell
- piezoelectric
- piezoelectric patches
- pins
- 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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Abstract
The utility model discloses a piezoelectric type squealer comprising a shell (1), a piezoelectric patch (2), a printed board (3) and two pins (4), wherein one end of the shell (1) is provided with a cylindrical bore (1-1), and the other end is provided with a through hole (1-2); the shell (1) is a square shell; the piezoelectric patch (2) is fixed in the shell (1); the printed board (3) is fixed in the cylindrical bore (1-1) of the shell (1) and is also located on the piezoelectric patch (2); the two pins (4) are fixed on the external surface of the printed board (3); fixed ends of the two pins (4) are connected with positive and negative poles of the piezoelectric patch (2) through a conducting wire (5); a front sound cavity is formed between the piezoelectric patch (2) and the through hole (1-2); a rear sound cavity is formed between the piezoelectric patch (2) and the printed board (3); and the printed board (3) is provided with at least one row of vents (3-1). Therefore, the piezoelectric type squealer provided by the utility model can prevent the shell from being out of shape due to heating in using process. The piezoelectric type squealer provided by the utility model belongs to the field of squealer technology.
Description
Technical field
The utility model belongs to the squealer technical field, especially relates to a kind of piezoelectric type squealer.
Background technology
The piezoelectric type squealer of prior art comprises that an end has shell, piezoelectric patches, printed board and two pins that opening and the other end have through hole; Described piezoelectric patches is fixing in the enclosure; Described printed board is fixed on the shell aperture place and is positioned at outside the piezoelectric patches; Two pins are fixed on the printed board outside surface, and the stiff end of two pins connects the both positive and negative polarity of piezoelectric patches through lead.Sound chamber before forming between piezoelectric patches and the through hole forms sound chamber, back between piezoelectric patches and the printed board.The piezoelectric type sound rises in the use; Understand heating, just back sound intracavity gas expanded by heating between printed board and the piezoelectric patches is because the existing piezoelectric type sound rises and do not have degassing function; Therefore after when gases are heated, they expand, can cause shell to deform, influence is normally used.
Summary of the invention
The utility model technical matters to be solved is: a kind of piezoelectric type squealer that can prevent in the use to cause because of heating casing deformation is provided.
The technical scheme that the utility model is taked is: a kind of piezoelectric type squealer; It comprises that an end has shell, piezoelectric patches, printed board and two pins that cylindrical hole and the other end have through hole; Described piezoelectric patches is fixing in the enclosure; Described printed board is fixed on shell cylindrical hole place and is positioned at outside the piezoelectric patches, and two pins are fixed on the printed board outside surface, and the stiff end of two pins connects the both positive and negative polarity of piezoelectric patches through lead; Sound chamber before forming between piezoelectric patches and the through hole forms sound chamber, back between piezoelectric patches and the printed board, described printed board is provided with at least one vent port.
Center and quantity that described vent port is arranged on printed board are one.
The beneficial effect of the utility model is: a kind of piezoelectric type squealer of the utility model, in printed board, establish vent port, and even heating causes the gas expansion also can effectively unnecessary gas be discharged in the utility model use, avoid making that shell deforms.
Description of drawings
Fig. 1 is the utility model piezoelectric type squealer cross-sectional schematic.
Fig. 2 is the utility model piezoelectric type squealer vertical view.
Fig. 3 is the utility model shell vertical view.
Among the figure, 1. shell, 1-1. cylindrical hole, 1-2. through hole, 2. piezoelectric patches, 3. printed board, 3-1. vent port, 4. pin, 5. lead.
Embodiment
Below be the utility model preferred embodiment, but therefore do not limit the protection domain of the utility model.With reference to Fig. 1, Fig. 2, shown in Figure 3; A kind of piezoelectric type squealer, it comprises that an end has shell 1, piezoelectric patches 2, printed board 3 and two pins 4 that cylindrical hole 1-1 and the other end have through hole 1-2, shell 1 is square; Described piezoelectric patches 2 is fixed in the shell 1; Described printed board 3 is fixed on shell 1 cylindrical hole 1-1 place and is positioned at outside the piezoelectric patches 2, and two pins 4 are fixed on printed board 3 outside surfaces, and the stiff end of two pins 4 connects the both positive and negative polarity of piezoelectric patches 2 through lead 5; Sound chamber before forming between piezoelectric patches 2 and the through hole 1-2 forms sound chamber, back between piezoelectric patches 2 and the printed board 3, described printed board 3 is provided with at least one vent port 3-1.
Center and quantity that described vent port 3-1 is arranged on printed board 3 are one.
Adopt silica gel bonding between piezoelectric patches 2 of the utility model and the shell 1, general piezoelectric patches 2 all is a piezoelectric ceramic piece.The utility model has directly been treated as the bottom of prior art with printed board 3.Adopt the riveting technology to carry out the synthetic integral body of riveting between pin 4 and the printed board 3, be connected through lead 5 employing welding manners between pin 4 stiff ends and the piezoelectric patches 2.
In use, heating causes sound chamber, back gas to expand, and can discharge from the vent port 3-1 of printed board 3.
Claims (2)
1. piezoelectric type squealer; It comprises that an end has shell (1), piezoelectric patches (2), printed board (3) and two pins (4) that cylindrical hole (1-1) and the other end have through hole (1-2); Shell (1) is square; Described piezoelectric patches (2) is fixed in the shell (1); Described printed board (3) is fixed on shell (1) cylindrical hole (1-1) and locates and be positioned at outside the piezoelectric patches (2), and two pins (4) are fixed on printed board (3) outside surface, and the stiff end of two pins (4) connects the both positive and negative polarity of piezoelectric patches (2) through lead (5); Sound chamber before forming between piezoelectric patches (2) and the through hole (1-2) forms sound chamber, back between piezoelectric patches (2) and the printed board (3), it is characterized in that: described printed board (3) is provided with at least one vent port (3-1).
2. a kind of piezoelectric type squealer according to claim 1 is characterized in that: center and quantity that described vent port (3-1) is arranged on printed board (3) are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238252XU CN202120602U (en) | 2011-07-07 | 2011-07-07 | Piezoelectric type squealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120238252XU CN202120602U (en) | 2011-07-07 | 2011-07-07 | Piezoelectric type squealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202120602U true CN202120602U (en) | 2012-01-18 |
Family
ID=45461650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120238252XU Expired - Lifetime CN202120602U (en) | 2011-07-07 | 2011-07-07 | Piezoelectric type squealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202120602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761812A (en) * | 2012-08-06 | 2012-10-31 | 东莞思威特电子有限公司 | Piezoelectric squealer structure for improving sound pressure value |
| CN103487097A (en) * | 2013-09-17 | 2014-01-01 | 广州市番禺奥迪威电子有限公司 | High-temperature-resisting ultrasonic flow sensor |
-
2011
- 2011-07-07 CN CN201120238252XU patent/CN202120602U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102761812A (en) * | 2012-08-06 | 2012-10-31 | 东莞思威特电子有限公司 | Piezoelectric squealer structure for improving sound pressure value |
| CN103487097A (en) * | 2013-09-17 | 2014-01-01 | 广州市番禺奥迪威电子有限公司 | High-temperature-resisting ultrasonic flow sensor |
| CN103487097B (en) * | 2013-09-17 | 2017-04-19 | 广东奥迪威传感科技股份有限公司 | High-temperature-resisting ultrasonic flow sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120118 Effective date of abandoning: 20120907 |
|
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |