CN202135307U - Circular piezoelectric squealer - Google Patents
Circular piezoelectric squealer Download PDFInfo
- Publication number
- CN202135307U CN202135307U CN201120218900U CN201120218900U CN202135307U CN 202135307 U CN202135307 U CN 202135307U CN 201120218900 U CN201120218900 U CN 201120218900U CN 201120218900 U CN201120218900 U CN 201120218900U CN 202135307 U CN202135307 U CN 202135307U
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- CN
- China
- Prior art keywords
- printed board
- shell
- piezoelectric
- piezoelectric patches
- squealer
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- 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 circular piezoelectric squealer, comprising an outer casing (1), a piezoelectric patch (2), a printed board (3) and two pins (4), wherein one end of the outer casing (1) is provided with an opening, and a bottom cover on the other end is provided with a through hole (6); the piezoelectric patch (2) is fixed in the outer casing (1); the printed board (3) is fixed at the opening of the outer casing (1) and located outside the piezoelectric patch (2); the two pins are fixed on the outer surface of the printed board (3), and the fixing ends of the two pins (4) are connected with the anode and cathode of the piezoelectric patch (2) through leads (5); and the inner wall of the opening end of the outer casing (1) is axially provided with multiple gap slots (1-1), the periphery of the printed board (3) is provided with multiple spacing blocks (3-1) having a number same with that of the multiple gap slots (1-1), a dimension matched to that of the multiple gap slots (1-1), and a position corresponding to that of multiple gap slots (1-1). The sounding intensity is enhanced with the dimension of the outer casing being increased, and the wall strength of the opening end of the outer casing being ensured. The circular piezoelectric squealer belongs to a technical field of a squealer.
Description
Technical field
The utility model belongs to the squealer technical field, especially relates to a kind of circular piezoelectric formula squealer.
Background technology
The circular piezoelectric formula squealer of prior art comprises that an end has shell, piezoelectric patches, printed board and two pins that have through hole on the bottom of the opening and the other end; 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 outer 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.
Because this squealer is a kind of sounding body, is engaged in and is used for sounding on the various products.Every profession and trade is in order to reduce the volume of product at present, and all volume and the intensity of phonation to squealer has higher requirements, and therefore need under the situation that does not increase the squealer shell sizes, strengthen the intensity of phonation of squealer.For example, a squealer is arranged at present, the piezoelectric patches diameter is 13.5mm; Housing diameter is 17mm; In order to strengthen intensity of phonation, need be with the piezoelectric patches enlarged-diameter to 15mm, because printed board is placed on outside the piezoelectric patches; Will make that shell aperture end place wall is thinner, shell aperture end wall insufficient strength if on the thick shell wall of only 2mm, design a step that is used to place printed board again.Therefore, the unit of each big production piezoelectric type squealer all is the diameter that when enlarging the piezoelectric patches size, also enlarges shell at present.Therefore fail all the time better to be solved, still need enlarge the shell sizes intensity of phonation that is improved, can't satisfy the objective requirement of existing market product.
Summary of the invention
The utility model technical problem to be solved is: a kind of circular piezoelectric formula squealer that when strengthening intensity of phonation, does not enlarge shell sizes and also can guarantee the wall intensity at shell aperture end place is provided.
The technical scheme that the utility model is taked is: a kind of circular piezoelectric formula squealer; It comprises that an end has shell, piezoelectric patches, printed board and two pins that have through hole on the bottom of the opening and the other end; 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, and two pins are fixed on the printed board outer 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; Form sound chamber, back between piezoelectric patches and the printed board; Described shell aperture end inwall is axially arranged with a plurality of gap slots, and that the printed board periphery is provided with is consistent with a plurality of gap slot quantity, size matches, position guide vane end stop one to one.
The inboard step that forms toward the inboard epirelief of shell of the shell bottom of said through hole.
Described housing diameter is 16.5mm-17.5mm, and the piezoelectric patches diameter is at 14.8mm-15.2mm.
The beneficial effect of the utility model is: the utility model circular piezoelectric formula squealer does not enlarge shell sizes when strengthening intensity of phonation and can guarantee the wall intensity at shell aperture end place yet.Satisfy the objective requirement of existing market to product.
As improvement, the inboard step that forms toward the inboard epirelief of shell of the shell bottom of said through hole.Strengthen the intensity of phonation of the utility model once more.
Description of drawings
Fig. 1 is the utility model circular piezoelectric formula squealer cross-sectional schematic.
Fig. 2 is the utility model circular piezoelectric formula squealer vertical view.
Fig. 3 is the utility model printed board vertical view.
Among the figure, 1. shell, 1-1. gap slot, 2. piezoelectric patches, 3. printed board, 3-1. guide vane end stop, 4. pin, 5. lead, 6. through hole, 6-1. step.
Embodiment
Below be the utility model preferred embodiment, but therefore do not limit the protection range of the utility model.With reference to Fig. 1, Fig. 2, shown in Figure 3; A kind of circular piezoelectric formula squealer; It comprises that an end has shell 1, piezoelectric patches 2, printed board 3 and two pins 4 that have through hole 6 on the bottom of the opening and the other end, and described piezoelectric patches 2 is fixed in the shell 1, and described printed board 3 is fixed on shell 1 opening part and is positioned at outside the piezoelectric patches 2; Two pins 4 are fixed on printed board 3 outer 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 6; Form sound chamber, back between piezoelectric patches 2 and the printed board 3; Described shell 1 openend inwall is axially arranged with a plurality of gap slot 1-1, and that printed board 3 peripheries are provided with is consistent with a plurality of gap slot 1-1 quantity, size matches, position guide vane end stop 3-1 one to one.
Described shell 1 openend inwall is axially arranged with a plurality of gap slot 1-1; Here axially be to understand like this: shell 1 openend inwall radially has gap slot 1-1; Extend a segment distance toward axial direction, and be not one to lead directly to down, extended distance is roughly 1～2 times of printed board thickness.
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.Present embodiment adopts shell 1 openend to establish the gap slot 1-1 at 120 ° at three intervals, therefore in order to cooperate with these three gap slot 1-1, also is provided with the guide vane end stop 3-1 at 120 ° at three intervals in the printed board 3.The utility model is not a step in shell 1 open end inwall cut place, but cutting is a part of, therefore can guarantee the intensity of shell 1 open end wall, is unlikely to become very soft.
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.
The inboard step 6-1 that forms past shell 1 an inboard epirelief of shell 1 bottom at said through hole 6 places has increased the intensity of phonation in preceding sound chamber.
Described shell 1 diameter is 16.5mm-17.5mm, and piezoelectric patches 2 diameters are at 14.8mm-15.2mm.
Circular piezoelectric formula squealer product casing 1 external diameter that present embodiment is made is 17mm, and product height is set to 7～9mm, and piezoelectric patches 2 diameters are 15mm.
Claims (3)
1. circular piezoelectric formula squealer; It comprises that an end has shell (1), piezoelectric patches (2), printed board (3) and two pins (4) that have through hole (6) on the bottom of the opening and the other end; Described piezoelectric patches (2) is fixed in the shell (1); Described printed board (3) is fixed on shell (1) opening part and is positioned at outside the piezoelectric patches (2), and two pins (4) are fixed on printed board (3) outer 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 (6); Form sound chamber, back between piezoelectric patches (2) and the printed board (3); It is characterized in that: described shell (1) openend inwall is axially arranged with a plurality of gap slots (1-1), and that printed board (3) periphery is provided with is consistent with a plurality of gap slots (1-1) quantity, size matches, position guide vane end stop (3-1) one to one.
2. circular piezoelectric formula squealer according to claim 1 is characterized in that: the inboard step (6-1) that forms toward the inboard epirelief of shell (1) of shell (1) bottom that said through hole (6) is located.
3. circular piezoelectric formula squealer according to claim 1 is characterized in that: described shell (1) diameter is 16.5mm-17.5mm, and piezoelectric patches (2) diameter is at 14.8mm-15.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120218900U CN202135307U (en) | 2011-06-24 | 2011-06-24 | Circular piezoelectric squealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120218900U CN202135307U (en) | 2011-06-24 | 2011-06-24 | Circular piezoelectric squealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202135307U true CN202135307U (en) | 2012-02-01 |
Family
ID=45524063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120218900U Expired - Lifetime CN202135307U (en) | 2011-06-24 | 2011-06-24 | Circular piezoelectric squealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202135307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602614A (en) * | 2019-09-09 | 2019-12-20 | Oppo广东移动通信有限公司 | Sound production device and electronic equipment |
-
2011
- 2011-06-24 CN CN201120218900U patent/CN202135307U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110602614A (en) * | 2019-09-09 | 2019-12-20 | Oppo广东移动通信有限公司 | Sound production device and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |