CN205302938U - Piezoelectric type squealer and alarm - Google Patents
Piezoelectric type squealer and alarm Download PDFInfo
- Publication number
- CN205302938U CN205302938U CN201520997453.6U CN201520997453U CN205302938U CN 205302938 U CN205302938 U CN 205302938U CN 201520997453 U CN201520997453 U CN 201520997453U CN 205302938 U CN205302938 U CN 205302938U
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- piezoelectric
- squealer
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- circuit board
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Abstract
The utility model relates to an electron squealer specifically, discloses a piezoelectric type squealer and alarm. The piezoelectric type squealer includes: the casing, it includes less last cylinder of external diameter and the great lower cylinder of external diameter, upward the top of cylinder is opened and is had the vocal hole, the bottom of cylinder has not by confined installation face down, the inside of casing has the resonant cavity, wherein the resonant cavity communicates with each other with the external world through vocal hole and installation face, the piezoelectric patches, it is installed in the resonant cavity of casing through installation face, dirver circuit board for the drive piezoelectric patches, it includes three electrically conductive shell fragment, the casing is installed on dirver circuit board to B, F, S tripolar that the messenger installed the piezoelectric patches in the casing respectively with dirver circuit board on three electrically conductive shell fragment sticis through the contact and reach the electricity and be connected. The utility model provides a piezoelectric type squealer and alarm, the slimming has not only been accomplished through redesign to the product appearance, the acoustic pressure value of exporting moreover can reach higher level.
Description
Technical field
The application relates to electric sound device, is specifically related to a kind of piezoelectric squealer and alarm.
Background technology
The most volume of traditional piezoelectric squealer is relatively big, electrical connection complexity, it is impossible to adapts to new indoor alarm (such as smoke alarm, carbon monoxide alarm and gas leak detector etc.) and requires slim demand. The piezoelectric squealer of publication number a kind of improvement that has been the patent disclosure of CN201054787, compares traditional piezoelectric squealer, although its small volume, yet suffers from many problems most, be such as electrically connected complexity, and vibration sounding effect is bad.
Summary of the invention
In view of this, the application provides a kind of piezoelectric squealer and alarm to solve the problems referred to above.
First aspect according to the application, the application proposes a kind of piezoelectric squealer, including:
Housing, it includes the less upper cylinder of external diameter and the bigger lower cylinder of external diameter, and described cylindrical top has vocal hole, and under described, cylindrical bottom has the installed surface being not closed out; The inside of described housing has resonant cavity, and wherein said resonant cavity is communicated with the external world by vocal hole and installed surface;
Drive circuit board, is used for driving piezoelectric patches, and it includes three electroconductive elastic sheets; Described housing is installed on drive circuit board so that the piezoelectric patches being installed in housing B, F, S tri-pole electrically connect with three guided missile sheets on drive circuit board respectively.
In one embodiment, described piezoelectric patches is scheduled in housing by silica gel solid.
In one embodiment, the upper cylinder external diameter of described housing is 24-30 millimeter, is highly 3-8 millimeter; Under cylindrical external diameter be 37-43 millimeter, be highly 3-8 millimeter; The height of housing is 11-15 millimeter.
In one embodiment, described piezoelectric patches is circular, and its diameter is more than the internal diameter of upper circle, and its diameter is 25-42 millimeter.
In one embodiment, described cylindrical external diameter is 25 millimeters, is highly 6.3 millimeters; Described lower cylinder external diameter is 40 millimeters, is highly 6.5 millimeters.
In one embodiment, described vocal hole is circular, and its diameter is 13 millimeters.
Second aspect according to the application, the application proposes a kind of alarm, and it includes above-mentioned piezoelectric squealer.
The application provides the benefit that:
According to the piezoelectric squealer of above-mentioned enforcement, product shape, through redesigning, has accomplished slimming; Meanwhile, size is adjusted and optimizes, and makes the sound pressure level of output can reach higher level;
According to the piezoelectric squealer of above-mentioned enforcement, overcome the shortcoming that in the patent that publication number is CN201054787, circular bottom makes acoustic pressure increase be restricted, save material simultaneously, simplify structure;
Piezoelectric squealer according to above-mentioned enforcement, overcome in the patent that publication number is CN201054787 because having the shortcoming being fixed on circular base lid for the circuit printing plate transferred to bring structure complexity, cost increase, making difficulty, the application contacts, by three electroconductive elastic sheets, the mode pressed with piezoelectric patches, drive circuit board and piezoelectric patches is made to be electrically connected, thus cancelling bonding wire, simplify production technology, it is to avoid in conventional art, the vibrations of piezoelectric patches are impacted by bonding wire.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of piezoelectric squealer of the prior art;
Fig. 2 is the structural representation of the piezoelectric squealer of a kind of embodiment of the application;
Fig. 3 is the explosive view of the piezoelectric squealer of a kind of embodiment of the application.
Detailed description of the invention
The application is described in further detail in conjunction with accompanying drawing below by detailed description of the invention.
It is illustrated in figure 1 the piezoelectric squealer of a kind of improvement of the patent disclosure that publication number is CN201054787, including housing 8, housing 8 is connected and composed by upper cylinder 9 and the lower cylinder 10 of hollow, vocal hole 16 is positioned at the top of cylinder 9, shell nozzle is positioned on an end face of lower cylinder 10, and shell nozzle is closed by circular bottom 14. Piezoelectric patches 11 is fixed in housing 8. Circuit printing plate 13 is installed on bottom 14, and piezoelectric patches 11 is electrically connected with circuit printing plate 13 by three lead-in wires 12, and circuit printing plate 13 is connected three output leads 15 again and drawn by the breach on housing, as the outfan of product. Drive circuit can drive piezoelectric patches 11 by three output leads 15.
In real work, circuit printing plate 13 plays switching effect, it is to avoid the impact on the vibration of piezoelectric patches of traditional lead-in wire being connected with piezoelectric patches, thus affecting the sounding effect of piezoelectric patches.
Bottom 14 is used to permanent circuit printed board 13, coordinates circuit printing plate 13 to complete the effect of switching. And find in real work, bottom 14 makes the acoustic pressure increase of product be restricted.
Consider the various shortcoming of conventional piezoelectric formula squealer, the application proposes a kind of piezoelectric squealer, and as shown in Figures 2 and 3, it includes housing 20, piezoelectric patches 30 and drive circuit board 50, wherein drive circuit board 50 includes three electroconductive elastic sheets 40, is specifically described below.
Housing 20 includes the less upper cylinder 21 of external diameter and the bigger lower cylinder 23 of external diameter. In one embodiment, housing 20 is one-body molded. The top of upper cylinder 21 has vocal hole 22, and the bottom of lower cylinder 23 has the installed surface being not closed out. The inside of housing 20 has resonant cavity, and resonant cavity is communicated with the external world by vocal hole 22 and installed surface.
Piezoelectric patches 30 is inwardly installed in the resonant cavity of housing 20 by the installed surface of housing 20. In one embodiment, piezoelectric patches 30 is scheduled in housing 20 by silica gel solid.
Drive circuit board 50 is used for driving piezoelectric patches 30. In one embodiment, drive circuit board 50 is printed with the drive circuit driving piezoelectric patches 30.
Housing 20 is installed on drive circuit board 50 so that the piezoelectric patches 30 being installed in housing 20 B, F, S tri-pole reach electrical connection with three electroconductive elastic sheets 40 on drive circuit board 50 by contacting to press respectively. So, driving signal is sent on piezoelectric patches 30 by three electroconductive elastic sheets 40 by drive circuit board 50 so that it is vibration sounding.
The size of piezoelectric squealer has also been redesigned by the application, and has adjusted further in reality is tested and optimized, so that the sound pressure level of output of products can reach significantly high level.
In one embodiment, the external diameter of the upper cylinder 21 of housing 20 is 24-30 millimeter, is highly 3-8 millimeter; The external diameter of lower cylinder 23 is 37-43 millimeter, is highly 3-8 millimeter; The whole height of housing 20 is 11-15 millimeter. Coordinating the size of above-mentioned housing 20, in one embodiment, piezoelectric patches 30 is circular, and its diameter is 25-42 millimeter. The piezoelectric type Chinese percussion instrument of above-mentioned size, improves the output sound pressure level of the alarm of or applying piezoelectric formula Chinese percussion instrument itself, its can meet in Europe superscript EN14604:2005 to the requirement of alarm acoustic pressure (full anechoic chamber, 3 meters, more than 85dB.
In another embodiment, the external diameter of the upper cylinder 21 of housing 20 is 25 millimeters, is highly 6.3 millimeters; The external diameter of lower cylinder 23 is 40 millimeters, is highly 6.5 millimeters. It is circular for coordinating this size, vocal hole 22, and its diameter is 13 millimeters. The piezoelectric squealer of this size and apply product, electrical performance indexes and the sounding effect such as alarm of piezoelectric squealer of this size be the preceding paragraph fall middle size scope in optimum.
The piezoelectric squealer of the application owing to not solving, by introducing circuit printing plate, the impact that piezoelectric patches is vibrated by wire as the product in Fig. 1 as switching, but contact, either directly through three electroconductive elastic sheets, the mode pressed with piezoelectric patches, drive circuit board and piezoelectric patches is made to be electrically connected, thus cancelling bonding wire, simplify production technology, it is to avoid in conventional art, the vibrations of piezoelectric patches are impacted by bonding wire.
Simultaneously, owing to the piezoelectric squealer of the application does not have as the product in Fig. 1 by introducing circuit printing plate as switching, therefore, also it is not required to introduce the circular bottom of the circuit printing plate of fixed transfer as in Fig. 1, thus saving material, simplify production technology.
Finally, the piezoelectric squealer of the application, product shape, through redesigning, has accomplished slimming; Meanwhile, size is adjusted and optimizes, and makes the sound pressure level of output can reach higher level.
It addition, the piezoelectric squealer of the application has plurality of application scenes, in one embodiment, the piezoelectric squealer of the application can be integrated in alarm, as sound-producing device. Such as, in a smoke alarm, piezoelectric squealer including the application, when the Smoke Sensor in smoke alarm is detected with bigger smog, send coherent signal to the drive circuit on drive circuit board 50, make drive circuit board 50 send driving signal to drive piezoelectric patches 30 sounding to reach the purpose of alarm. In one embodiment, the sensor interlock circuit in alarm, it is possible to be integrated on drive circuit board 50, for instance, it is printed on drive circuit board 50.
Above content is further description the application made in conjunction with specific embodiment, it is impossible to assert the application be embodied as be confined to these explanations. For the application person of an ordinary skill in the technical field, under the premise conceived without departing from the present application, it is also possible to make some simple deduction or replace.
Claims (7)
1. a piezoelectric squealer, it is characterised in that including:
Housing, it includes the less upper cylinder of external diameter and the bigger lower cylinder of external diameter, and described cylindrical top has vocal hole, and under described, cylindrical bottom has the installed surface being not closed out; The inside of described housing has resonant cavity, and wherein said resonant cavity is communicated with the external world by vocal hole and installed surface;
Piezoelectric patches, it is installed in the resonant cavity of housing by installed surface;
Drive circuit board, is used for driving piezoelectric patches, and it includes three electroconductive elastic sheets; Described housing is installed on drive circuit board so that the piezoelectric patches being installed in housing B, F, S tri-pole respectively with three electroconductive elastic sheets on drive circuit board by contact press reach electrical connection.
2. piezoelectric squealer as claimed in claim 1, it is characterised in that described piezoelectric patches is scheduled in housing by silica gel solid.
3. piezoelectric squealer as claimed in claim 1 or 2, it is characterised in that the upper cylindrical external diameter of described housing is 24-30 millimeter, is highly 3-8 millimeter; Under cylindrical external diameter be 37-43 millimeter, be highly 3-8 millimeter; The height of housing is 11-15 millimeter.
4. piezoelectric squealer as claimed in claim 3, it is characterised in that described piezoelectric patches is circular, and its diameter is more than the internal diameter of upper circle, and its diameter is 25-42 millimeter.
5. piezoelectric squealer as claimed in claim 1 or 2, it is characterised in that described cylindrical external diameter is 25 millimeters, is highly 6.3 millimeters; Under described, cylindrical external diameter is 40 millimeters, is highly 6.5 millimeters.
6. piezoelectric squealer as claimed in claim 5, it is characterised in that described vocal hole is circular, and its diameter is 13 millimeters.
7. an alarm, including the piezoelectric squealer according to any one of such as claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520997453.6U CN205302938U (en) | 2015-12-04 | 2015-12-04 | Piezoelectric type squealer and alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520997453.6U CN205302938U (en) | 2015-12-04 | 2015-12-04 | Piezoelectric type squealer and alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205302938U true CN205302938U (en) | 2016-06-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520997453.6U Active CN205302938U (en) | 2015-12-04 | 2015-12-04 | Piezoelectric type squealer and alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205302938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326133A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Buzzer, buzzer device and security equipment |
-
2015
- 2015-12-04 CN CN201520997453.6U patent/CN205302938U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111326133A (en) * | 2018-12-17 | 2020-06-23 | 海湾安全技术有限公司 | Buzzer, buzzer device and security equipment |
| WO2020125444A1 (en) * | 2018-12-17 | 2020-06-25 | Gulf Security Technology Company Limited | Buzzer, buzzer device and security equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518054 Nanshan District Nanshan Road, Guangdong City, the new horizons apartment, floor, floor, Patentee after: Shenzhen pan sea Sanjiang electronic Limited by Share Ltd Address before: 518054 Nanshan District Nanshan Road, Guangdong City, the new horizons apartment, floor, floor, Patentee before: Shenzhen Fanhai Sanjiang Electronics Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 the three floor of the new world apartment, Nanshan Avenue, Nanshan District, Shenzhen, Guangdong (for office only). Patentee after: Shenzhen hi tech investment Sanjiang Electronics Co.,Ltd. Address before: 518054, Guangdong Shenzhen, Nanshan District Nanshan Road, glorious new world apartment three Patentee before: SHENZHEN FANHAI SANJIANG ELECTRONICS Co.,Ltd. |