CN204537688U - A kind of piezoelectric type active buzzer - Google Patents
A kind of piezoelectric type active buzzer Download PDFInfo
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- CN204537688U CN204537688U CN201520182626.9U CN201520182626U CN204537688U CN 204537688 U CN204537688 U CN 204537688U CN 201520182626 U CN201520182626 U CN 201520182626U CN 204537688 U CN204537688 U CN 204537688U
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- pcb board
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Abstract
The utility model discloses a kind of piezoelectric type active buzzer, belong to hummer field.A kind of piezoelectric type active buzzer of the present utility model, comprise one end with cylindrical hole and the bottom of the other end is provided with the shell of sender, piezoelectric patches, pcb board and two pins, described cylindrical hole inwall is provided with the step for supporting piezoelectric patches; Described pcb board is fixed on the open end of shell and is positioned at outside piezoelectric patches; Described two pins is fixedly mounted on the outside surface of pcb board; The inside surface of described pcb board is provided with oscillatory circuit, and the signal output part of this oscillatory circuit is electrically connected with piezoelectric patches.The utility model structure is simple, vibrates electrical signal transfer on piezoelectric patches and then sound, avoid the functional deficiency of the tone-off caused because of the quality problem of piezoelectric patches by the oscillatory circuit be arranged on pcb board; The design of pcb board structure can abdicate sufficient space accommodation components and parts in addition.
Description
Technical field
The utility model relates to a kind of piezo buzzer, more particularly, relates to a kind of piezoelectric type active buzzer.
Background technology
The circular piezoelectric squealer of prior art comprises one end with opening and with the shell of through hole, piezoelectric patches, printed board and two pins on the bottom of the other end, piezoelectric patches is fixing in the enclosure, printed board is fixed on shell aperture place and is positioned at outside piezoelectric patches, two pins are fixed on printed board outside surface, and the stiff end of two pins connects the both positive and negative polarity of piezoelectric patches by wire.Such piezoelectric squealer is the self-sustained oscillation of feedback piezo sheet, and circuit structure is simple, but due to piezoelectric patches self quality problem, is easy to nonoscillatory and causes product function to lose efficacy.
Summary of the invention
1. the utility model technical matters that will solve
The purpose of this utility model is to overcome above-mentioned problem, provide a kind of piezoelectric type active buzzer, adopt the technical solution of the utility model, structure is simple, vibrate electrical signal transfer on piezoelectric patches and then sound by the oscillatory circuit be arranged on pcb board, avoid the functional deficiency of the tone-off caused because of the quality problem of piezoelectric patches; The design of pcb board structure can abdicate sufficient space accommodation components and parts in addition.
2. technical scheme
For achieving the above object, the technical scheme that the utility model provides is:
A kind of piezoelectric type active buzzer of the present utility model, comprise one end with cylindrical hole and the bottom of the other end is provided with the shell of sender, piezoelectric patches, pcb board and two pins, described cylindrical hole inwall is provided with the step for supporting piezoelectric patches; Described pcb board is fixed on the open end of shell and is positioned at outside piezoelectric patches; Described two pins is fixedly mounted on the outside surface of pcb board; The inside surface of described pcb board is provided with oscillatory circuit, and the signal output part of this oscillatory circuit is electrically connected with piezoelectric patches.
Further, described pcb board is provided with boss along its diametric(al); The open end of described shell offers the bayonet socket matched with above-mentioned boss.
Further, the diameter of described shell is 12mm, is highly 9.5mm; Distance between the step surface of described step and the bottom surface of cylindrical hole is 4.4mm; The diameter of described sender is 2.8mm; The diameter of described piezoelectric patches is 10.5mm.
3. beneficial effect
The technical scheme adopting the utility model to provide, compared with existing known technology, has following beneficial effect:
(1) a kind of piezoelectric type active buzzer of the present utility model, the inside surface of its pcb board is provided with oscillatory circuit, the signal output part of this oscillatory circuit is electrically connected with piezoelectric patches, oscillatory circuit is prior art, technology maturation, concrete composition components and parts just repeat no more at this, vibrate electrical signal transfer on piezoelectric patches and then sound, avoid the functional deficiency of the tone-off caused because of the quality problem of piezoelectric patches by the oscillatory circuit be arranged on pcb board;
(2) a kind of piezoelectric type active buzzer of the present utility model, its pcb board is provided with boss along its diametric(al), the open end of shell offers the bayonet socket matched with above-mentioned boss, and the design of pcb board structure can be abdicated sufficient space and hold components and parts;
(3) a kind of piezoelectric type active buzzer of the present utility model, the diameter of its shell is 12mm, be highly 9.5mm, distance between the step surface of step and the bottom surface of cylindrical hole is 4.4mm, the diameter of sender is 2.8mm, the diameter of piezoelectric patches is 10.5mm, under above-mentioned dimension combination, goes out sound best results by research experiment repeatedly.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of piezoelectric type active buzzer of the present utility model;
Fig. 2 is the cut-open view of a kind of piezoelectric type active buzzer of the present utility model.
Label declaration in schematic diagram: 1, shell; 11, cylindrical hole; 12, sender; 13, step; 14, bayonet socket; 2, piezoelectric patches; 3, pcb board; 31, boss; 4, pin.
Embodiment
For understanding content of the present utility model further, in conjunction with the accompanying drawings and embodiments the utility model is described in detail.
Embodiment
Composition graphs 1 and Fig. 2, a kind of piezoelectric type active buzzer of the present embodiment, comprise one end with cylindrical hole 11 and the bottom of the other end is provided with the shell 1 of sender 12, piezoelectric patches 2, pcb board 3 and two pins 4, cylindrical hole 11 inwall is provided with the step 13 for supporting piezoelectric patches 2; Pcb board 3 is fixed on the open end of shell 1 and is positioned at outside piezoelectric patches 2; Two pins 4 is fixedly mounted on the outside surface of pcb board 3; The inside surface of pcb board 3 is provided with oscillatory circuit, the signal output part of this oscillatory circuit is electrically connected with piezoelectric patches 2, oscillatory circuit is prior art, technology maturation, concrete composition components and parts just repeat no more at this, vibrate electrical signal transfer on piezoelectric patches 2 and then sound by the oscillatory circuit be arranged on pcb board 3, avoid the functional deficiency of the tone-off caused because of the quality problem of piezoelectric patches 2; Hold components and parts to make pcb board 3 to be abdicated sufficient space, pcb board 3 is provided with boss 31 along its diametric(al), and the open end of shell 1 offers the bayonet socket 14 matched with above-mentioned boss 31; The diameter of the present embodiment housing 1 is 12mm, is highly 9.5mm, and the distance between the step surface of step 13 and the bottom surface of cylindrical hole 11 is 4.4mm, the diameter of sender 12 is 2.8mm, the diameter of piezoelectric patches 2 is 10.5mm, under above-mentioned dimension combination, goes out sound best results by research experiment repeatedly; In the present embodiment, the mode signal output of oscillatory circuit is that 2 times of voltages export in addition, goes out audio really better.
A kind of piezoelectric type active buzzer of the present utility model, structure is simple, vibrate electrical signal transfer on piezoelectric patches 2 and then sound by the oscillatory circuit be arranged on pcb board 3, avoid the functional deficiency of the tone-off caused because of the quality problem of piezoelectric patches 2; The design of pcb board 3 structure can abdicate sufficient space accommodation components and parts in addition.
Schematically above be described the utility model and embodiment thereof, this description does not have restricted, and also just one of the embodiment of the present utility model shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the utility model and creating aim, design the frame mode similar to this technical scheme and embodiment without creationary, protection domain of the present utility model all should be belonged to.
Claims (3)
1. a piezoelectric type active buzzer, comprising one end with cylindrical hole (11) and the bottom of the other end is provided with the shell (1) of sender (12), piezoelectric patches (2), pcb board (3) and two pins (4), it is characterized in that: described cylindrical hole (11) inwall is provided with the step (13) for supporting piezoelectric patches (2); Described pcb board (3) is fixed on the open end of shell (1) and is positioned at piezoelectric patches (2) outward; Described two pins (4) is fixedly mounted on the outside surface of pcb board (3); The inside surface of described pcb board (3) is provided with oscillatory circuit, and the signal output part of this oscillatory circuit is electrically connected with piezoelectric patches (2).
2. a kind of piezoelectric type active buzzer according to claim 1, is characterized in that: described pcb board (3) is provided with boss (31) along its diametric(al); The open end of described shell (1) offers the bayonet socket (14) matched with above-mentioned boss (31).
3. a kind of piezoelectric type active buzzer according to claim 2, is characterized in that: the diameter of described shell (1) is 12mm, is highly 9.5mm; Distance between the step surface of described step (13) and the bottom surface of cylindrical hole (11) is 4.4mm; The diameter of described sender (12) is 2.8mm; The diameter of described piezoelectric patches (2) is 10.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182626.9U CN204537688U (en) | 2015-03-27 | 2015-03-27 | A kind of piezoelectric type active buzzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520182626.9U CN204537688U (en) | 2015-03-27 | 2015-03-27 | A kind of piezoelectric type active buzzer |
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| Publication Number | Publication Date |
|---|---|
| CN204537688U true CN204537688U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520182626.9U Active CN204537688U (en) | 2015-03-27 | 2015-03-27 | A kind of piezoelectric type active buzzer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664033A (en) * | 2022-03-17 | 2022-06-24 | 广州蜂鸟传感科技有限公司 | Packaging structure and packaging process of small alarm |
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2015
- 2015-03-27 CN CN201520182626.9U patent/CN204537688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114664033A (en) * | 2022-03-17 | 2022-06-24 | 广州蜂鸟传感科技有限公司 | Packaging structure and packaging process of small alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180301 Address after: Zheng Lu Zhen Xu Jia Cun, Tianning District 213000 Jiangsu city of Changzhou Province Patentee after: Changzhou fuhongda Electronics Co., Ltd. Address before: 213162 room 19, unit 201, Unit No. C of Huadong new village, Hutang Town, Hutang Town, Changzhou, Jiangsu Patentee before: Jiang Yin |
|
| TR01 | Transfer of patent right |