CN201380796Y - Piezoelectric automobile alarm - Google Patents
Piezoelectric automobile alarm Download PDFInfo
- Publication number
- CN201380796Y CN201380796Y CN200920115427U CN200920115427U CN201380796Y CN 201380796 Y CN201380796 Y CN 201380796Y CN 200920115427 U CN200920115427 U CN 200920115427U CN 200920115427 U CN200920115427 U CN 200920115427U CN 201380796 Y CN201380796 Y CN 201380796Y
- Authority
- CN
- China
- Prior art keywords
- annunciator
- wiring board
- piezoelectric
- ceramic piece
- piezoelectric ceramic
- 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 automobile alarm which comprises a shell (1) composed of a front cover (1.1) and a rear cover (1.3), an alarm circuit board (2) and a piezoelectric ceramic piece (3) arranged in the front cover (1.1), the shell (1) further comprises a middle sleeve (1.2), the middle sleeve (1.2) is respectively buckled with the front cover (1.1) and the rear cover (1.3), the middle sleeve (1.2) is sleeved on the alarm circuit board (2), the alarm circuit board (2) is provided with a through hole (5) for a line conductor (4) to penetrate, and the line conductor (4) is respectively welded with the alarm circuit board (2) and the piezoelectric ceramic piece (3)via the through hole (5). The piezoelectric alarm can effectively lower alarm noise and has low welding difficulty.
Description
Technical field
The utility model relates to the annunciator that uses on a kind of automobile, specifically is a kind of piezoelectric type automobile annunciator.
Background technology
At present, the piezoelectric type automobile annunciator of prior art generally comprises the housing be made up of protecgulum and bonnet, is located at annunciator wiring board and piezoelectric ceramic piece in the housing, is connected by lead between wiring board and the piezoelectric ceramic piece.There is following shortcoming in this structure: owing to annunciator is separately fixed at piezoelectric ceramic piece and wiring board in protecgulum and the bonnet earlier, and then be welded to connect the lead of piezoelectric ceramic piece and wiring board when assembling, at last protecgulum and bonnet linked into an integrated entity.Wherein the length that needs during wire bonds is much larger than the needed length that connects piezoelectric ceramic piece and wiring board, that is to say that the lead that connects usefulness is long, long lead is coiled between wiring board and the piezoelectric ceramic piece, the vibration of piezoelectric ceramic piece can drive long conductor vibration when alarm work, produces noise and makes the pure tone degree of piezoelectric type automobile annunciator bad.In addition, in order to reduce the noise of cab warning to greatest extent, generally can guarantee to reduce conductor length under the prerequisite that lead can weld as far as possible, but just cause the difficulty of welding higher like this.
The utility model content
The technical problems to be solved in the utility model is, overcomes the defective of above prior art, provides a kind of and can effectively reduce annunciator noise and the low piezoelectric type automobile annunciator of welding difficulty.
The technical solution of the utility model is, a kind of piezoelectric type automobile annunciator is provided, comprise housing, the annunciator wiring board of being made up of protecgulum and bonnet and be located at piezoelectric ceramic piece in the protecgulum, described housing also comprises middle cover, described in cover respectively with protecgulum, bonnet snapping; Cover and the socket of described annunciator wiring board in described; Described annunciator wiring board is provided with the through hole that passes for lead; Described lead via through holes welds with annunciator wiring board, piezoelectric ceramic piece respectively.
After adopting above structure, the utility model compared with prior art, the conductor length that the utility model piezoelectric type automobile annunciator connects between piezoelectric ceramic piece and the wiring board roughly equates with distance between the wiring board with piezoelectric ceramic piece, eliminated annunciator when work piezoelectric ceramic piece vibration can drive long conductor vibration and the noise that produces, make that the pure tone degree of annunciator is good.In addition, the utility model adopts the housing structure of being made up of protecgulum, bonnet and middle cover, elder generation's welding lead and piezoceramic coupling end during installation, the other end passes the through hole of annunciator wiring board, the protecgulum and the middle cover of piezoelectric ceramic piece and annunciator wiring board will be installed again to be installed earlier, and then the coupling end of welding lead and annunciator wiring board, thereby make that the difficulty of welding is lower.
As improvement, the lead fixed of connection line plate of the present utility model and piezoelectric ceramic piece can be bonded in circuit welding again on the through hole earlier on through hole, further reduced the welding difficulty.
Description of drawings
Fig. 1 is the structural profile scheme drawing of the utility model piezoelectric type automobile annunciator.
Fig. 2 is the blast structural representation of the housing of the utility model piezoelectric type automobile annunciator.
Shown in the figure 1, housing, 1.1, protecgulum, 1.2, middle cover, 1.3, bonnet, 2, the annunciator wiring board, 3, piezoelectric ceramic piece, 4, lead, 5, through hole, 6, projection, 7, groove, 7.1, breach.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model piezoelectric type automobile annunciator comprises the housing of being made up of protecgulum 1.1, middle cover 1.2, bonnet 1.3 1, and annunciator wiring board 2, piezoelectric ceramic piece 3, piezoelectric ceramic piece are socketed in the protecgulum 1.1 and by adhesive and connect.
In the cover 1.2 respectively with protecgulum 1.1, bonnet 1.3 snappings are meant: overlap during protecgulum 1.1 is socketed on the cylindrical of 1.2 1 ends, the inwall of protecgulum 1.1 is provided with four projectioies 6 of circumferential five equilibrium, in cover 1.2 cylindrical be provided with four of the five equilibrium grooves 7 with protruding 6 close-fittings, described protruding 6 match with the position of groove 7, one side of described groove 7 is provided with a breach 7.1 for projection 6 embeddings, the circumferential lengths of described breach 7.1 is less than the circumferential lengths of groove 7, projection 6 on the protecgulum 1 screws and can connect behind an end of breach 7.1 insertion grooves, and groove 7 circumferential lengths are greater than the part and protruding 6 axial limitings of breach 7.1 circumferential lengths like this; Same, the other end of middle cover 1.2 is socketed on the cylindrical of bonnet 1.3, wherein overlaps to screw the back behind the groove 7 that 1.2 projection 6 inserts bonnets 1.3 and connect.
Overlap in 1.2 during annunciator wiring board 2 is socketed in, and connect by adhesive.
In order to guarantee the pure tone degree of annunciator, generally lead 4 can be bonded on the through hole 5 of annunciator wiring board 2, with further reduction welding difficulty.
During installation, earlier annunciator wiring board 2 and piezoelectric ceramic piece 3 are adhesively fixed on respectively in middle cover 1.2 and the protecgulum 1.1, one end of lead 4 is welded on the piezoelectric ceramic piece 3, the other end passes the through hole 5 of annunciator wiring board 2, with protecgulum 1.1 and middle cover 1.2 snappings, again that lead 4 is stretching then, and fix in the lead 4 and the contact position coated with adhesive of through hole 5, the other end of lead 4 is welded on the annunciator wiring board 2, at last middle cover and bonnet snapping is got final product.
The utility model is not limited in above embodiment, wherein in cover 1.2 respectively with protecgulum 1.1, bonnet 1.3 be connected can also for be spirally connected, bonding etc.; Through hole 5 can also be one; These are all in protection domain of the present utility model.
Claims (2)
1, a kind of piezoelectric type automobile annunciator, comprise housing (1), the annunciator wiring board of forming by protecgulum (1.1) and bonnet (1.3) (2) and be located at the interior piezoelectric ceramic piece (3) of protecgulum (1.1), it is characterized in that: described housing (1) also comprises middle cover (1.2), described in the cover (1.2) respectively with protecgulum (1.1) and bonnet (1.3) snapping; Cover (1.2) is socketed on the described annunciator wiring board (2) in described; Described annunciator wiring board (2) is provided with the through hole (5) that passes for lead (4); Described lead (4) via through holes (5) welds with annunciator wiring board (2) and piezoelectric ceramic piece (3) respectively.
2, piezoelectric type automobile annunciator according to claim 1 is characterized in that: described lead (4) is bonded on the through hole (5) of annunciator wiring board (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115427U CN201380796Y (en) | 2009-03-12 | 2009-03-12 | Piezoelectric automobile alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115427U CN201380796Y (en) | 2009-03-12 | 2009-03-12 | Piezoelectric automobile alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201380796Y true CN201380796Y (en) | 2010-01-13 |
Family
ID=41524269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920115427U Expired - Lifetime CN201380796Y (en) | 2009-03-12 | 2009-03-12 | Piezoelectric automobile alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201380796Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105829834A (en) * | 2013-10-15 | 2016-08-03 | 全耐塑料公司 | System for attaching a functional measurement or detection body to a vehicle bodywork part |
-
2009
- 2009-03-12 CN CN200920115427U patent/CN201380796Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105829834A (en) * | 2013-10-15 | 2016-08-03 | 全耐塑料公司 | System for attaching a functional measurement or detection body to a vehicle bodywork part |
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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: 20100113 |