CN204516345U - Piezoelectric squealer - Google Patents
Piezoelectric squealer Download PDFInfo
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- CN204516345U CN204516345U CN201520239638.0U CN201520239638U CN204516345U CN 204516345 U CN204516345 U CN 204516345U CN 201520239638 U CN201520239638 U CN 201520239638U CN 204516345 U CN204516345 U CN 204516345U
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Abstract
The utility model discloses a kind of piezoelectric squealer, comprise housing (1), piezoelectric patches (2) and many lead-in wires (3), housing (1) is provided with a vocal hole (4); Piezoelectric patches (2) and many lead-in wires (3) are all located in housing (1); One end of many lead-in wires (3) is welded with piezoelectric patches (2); Piezoelectric patches (2) communicates with extraneous air through vocal hole (4); The outward flange of housing (1) is also provided with a shell (5), shell (5) is provided with a wiring board (6), wiring board (6) is provided with many conductive pins (7), and the quantity of conductive pin (7) is identical with lead-in wire (3) quantity; The other end of many lead-in wires (3) with many conductive pins (7) and one_to_one corresponding be electrically connected; Housing (1) one end away from vocal hole (4) is also provided with multiple support member.The reliability of this piezoelectric squealer is high, generation abnormal sound probability is low, easy for installation and applicable Automated assembly.
Description
Technical field
The utility model relates to and is a kind ofly applied in some as the sound device on the warning devices such as carbon monoxide alarm, is specifically a kind of piezoelectric squealer.
Background technology
The piezoelectric squealer of prior art forms primarily of housing, piezoelectric patches, lead-in wire and vocal hole.Piezoelectric patches vibrates the sound wave sent and is sent by vocal hole after multiple reflections in columniform sounding chamber, to produce the sound compared with high-decibel.The piezoelectric squealer of said structure has the following disadvantages in the use procedure of reality: first, the piezoelectric squealer of this structure needs first to identify lead-in wire character when mounted, and then one_to_one corresponding inserts in the mounting hole of corresponding warning device pcb board and welds, so not only inconvenience is installed, and is not suitable for Automated assembly.Secondly, the piezoelectric squealer major part of existing structure all pass through the upright power of wire thirty years of age side in the circuit board, and the probability of generation abnormal sound so not only can be made higher, and fragile, and reliability is low.Therefore, for these reasons, urgently need a kind of reliability high, produce low, the easy for installation and piezoelectric squealer of applicable Automated assembly of abnormal sound probability, to solve the problem.
Utility model content
The technical problems to be solved in the utility model is, provide a kind of reliability high, produce low, the easy for installation and piezoelectric squealer of applicable Automated assembly of abnormal sound probability.
The technical solution of the utility model is, provides a kind of piezoelectric squealer, and comprise a housing, a piezoelectric patches and many lead-in wires, described housing is provided with a vocal hole; Described piezoelectric patches and Duo Gen lead-in wire are all located in housing; One end of described many lead-in wires is welded with piezoelectric patches; Described piezoelectric patches communicates with extraneous air through vocal hole; The outward flange of described housing is also provided with a shell, described shell is provided with a wiring board, described wiring board is provided with many conductive pins, and the quantity of described conductive pin is identical with number of leads; Described many lead-in wire the other ends with many conductive pins and one_to_one corresponding be electrically connected; Shell one end away from vocal hole is also provided with multiple support member for being connected with pcb board with warning device.
Described support member comprises support column and connecting pin, and one end of described support column is fixed on housing, and the other end of described support column is connected with one end of connecting pin.
Vocal hole one end away from piezoelectric patches is provided with an annular baffle.
After adopting above structure, the utility model compared with prior art, has the following advantages:
The mounting hole can directly aimed at when the utility model piezoelectric squealer is installed on warning device pcb board inserts and welds, and first identify lead-in wire character without the need to first needing, one_to_one corresponding inserts in the mounting hole of corresponding warning device pcb board and welds again, so not only easy for installation, and there is standardized feature, be very applicable to Automated assembly.Meanwhile, the utility model piezoelectric squealer is directly fixed on warning device pcb board, and therefore its probability producing abnormal sound is lower, and not fragile, and reliability is high.
As improvement, the vocal hole one end away from piezoelectric patches is provided with an annular baffle.The setting of this annular baffle is very beneficial for the sounding of the utility model piezoelectric squealer.
Accompanying drawing explanation
Fig. 1 is the explosive view of the utility model piezoelectric squealer.
Fig. 2 is the vertical view of the utility model piezoelectric squealer.
Fig. 3 is the cut-open view of the utility model piezoelectric squealer.
Shown in figure 1, housing, 2, piezoelectric patches, 3, lead-in wire, 4, vocal hole, 5, shell, 6, wiring board, 7, conductive pin, 8, support column, 9, connecting pin, 10, annular baffle, 11, joint pin, 12, hole.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of piezoelectric squealer of the utility model, comprise housing 1, piezoelectric patches 2 and many lead-in wires 3, described housing 1 is provided with a vocal hole 4, and this vocal hole 4 is cylindrical hole; Described piezoelectric patches 2 and Duo Gen lead-in wire 3 are all located in housing 1, and piezoelectric patches 2 is connected in housing 1 by gluing; One end of described many lead-in wires 3 is welded with piezoelectric patches 2, i.e. both electrical connections; Described piezoelectric patches 2 communicates with extraneous air through vocal hole 4; The outward flange of described housing 1 is also provided with a shell 5, in the present embodiment, shell 5 is little square shell; Described shell 5 is provided with a wiring board 6, described wiring board 6 is provided with many conductive pins 7, the quantity of described conductive pin 7 is identical with lead-in wire 3 quantity, in the present embodiment, shell 5 is provided with two joint pins 11, wiring board 6 is provided with two 12, two, hole joint pins 11 inserted for two joint pins respectively and inserts riveting behind two holes 12 respectively; Lead-in wire is 3, and the welding hole on wiring board 6 is three groups, and often group has two welding holes be electrically connected, and one of them welding hole in every bond pads hole connects a lead-in wire 3 respectively, and the another one welding hole in every bond pads hole connects a conductive pin 7 respectively.Described many lead-in wire 3 the other end with many conductive pins 7 and one_to_one corresponding be electrically connected; Housing 1 one end away from vocal hole 4 is also provided with multiple support member for being connected with pcb board with warning device, is namely fixed on alarm pcb board.
Described support member comprises support column 8 and connecting pin 9, and one end of described support column 8 is fixed on housing 1, and the other end of described support column 8 is connected with one end of connecting pin 9.
Vocal hole 4 one end away from piezoelectric patches 2 is provided with an annular baffle 10.
This product belongs to the piezoelectric ceramics squealer of separated exciting, should an additional drive singal side can sounding.When an additional drive singal, transform electrical signals is become mechanical shock by piezoelectric ceramic piece, and this mechanical shock drives the motion of sound film, after the motion of sound film, impels the air-flow in air to send strong flowing, thus causes sharp-pointed sound.
Below only just most preferred embodiment of the present utility model is described, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and its concrete structure allows to change.In every case the various change done in the protection domain of the utility model independent claims is all in protection domain of the present utility model.
Claims (3)
1. a piezoelectric squealer, comprise a housing (1), a piezoelectric patches (2) and many lead-in wires (3), described housing (1) is provided with a vocal hole (4); Described piezoelectric patches (2) and many lead-in wires (3) are all located in housing (1); One end of described many lead-in wires (3) is welded with piezoelectric patches (2); Described piezoelectric patches (2) communicates with extraneous air through vocal hole (4); It is characterized in that: the outward flange of described housing (1) is also provided with a shell (5), described shell (5) is provided with a wiring board (6), described wiring board (6) is provided with many conductive pins (7), and the quantity of described conductive pin (7) is identical with lead-in wire (3) quantity; The other end of described many lead-in wires (3) with many conductive pins (7) and one_to_one corresponding be electrically connected; Housing (1) one end away from vocal hole (4) is also provided with multiple support member for being connected with pcb board with warning device.
2. piezoelectric squealer according to claim 1, it is characterized in that: described support member comprises support column (8) and connecting pin (9), one end of described support column (8) is fixed on housing (1), and the other end of described support column (8) is connected with one end of connecting pin (9).
3. piezoelectric squealer according to claim 1, is characterized in that: vocal hole (4) one end away from piezoelectric patches (2) is provided with an annular baffle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239638.0U CN204516345U (en) | 2015-04-20 | 2015-04-20 | Piezoelectric squealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520239638.0U CN204516345U (en) | 2015-04-20 | 2015-04-20 | Piezoelectric squealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204516345U true CN204516345U (en) | 2015-07-29 |
Family
ID=53714293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520239638.0U Active CN204516345U (en) | 2015-04-20 | 2015-04-20 | Piezoelectric squealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204516345U (en) |
-
2015
- 2015-04-20 CN CN201520239638.0U patent/CN204516345U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |