CN106504735B - Welding-free high-frequency high-sound pressure buzzer and production method - Google Patents
Welding-free high-frequency high-sound pressure buzzer and production method Download PDFInfo
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- CN106504735B CN106504735B CN201611245539.9A CN201611245539A CN106504735B CN 106504735 B CN106504735 B CN 106504735B CN 201611245539 A CN201611245539 A CN 201611245539A CN 106504735 B CN106504735 B CN 106504735B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
Abstract
The application relates to the technical field of buzzers, in particular to a welding-free high-frequency high-sound pressure buzzer and a production method thereof. A step part is arranged on the outer side surface of the upper shell; the outer side surface of the step part is provided with at least two upper inserts, and the outer side surface of the lower shell is provided with a lower insert which can be spliced with the upper inserts; the upper insert and the lower insert are respectively provided with an upper jack and a lower jack, the upper jack and the lower jack are communicated, and plugs capable of moving in the upper jack and the lower jack are arranged in the upper jack and the lower jack; the lower side of the lower insert is provided with a plurality of grooves, and the side surface of the lower insert between the grooves forms an elastic claw; the upper shell and the lower shell are connected through a plurality of buckling devices; two groups of patch parts are oppositely arranged on the circuit board, and each patch part comprises a contact pin and a welding part; the coil is provided with a abdication part at the position corresponding to the patch part; the welding-free high-frequency high-sound pressure buzzer not only can improve the product performance and simplify the installation mode, but also can optimize the production process, improve the production efficiency and save the cost.
Description
Technical Field
The application relates to the technical field of buzzers, in particular to a welding-free high-frequency high-sound pressure buzzer and a production method thereof.
Background
The buzzer is an electronic sounder with an integrated structure, adopts direct-current voltage to supply power, and is widely applied to electronic products such as computers, printers, copiers, alarms, electronic toys, automobile electronic equipment, telephones, timers and the like as a sounding device; the response frequency of the current market phi 25 series buzzer is in the low frequency part, the high frequency part has narrow frequency band and low sound pressure; and the performance structure and the production and installation mode of the current buzzer have larger limitations.
Disclosure of Invention
The application aims to provide the welding-free high-frequency high-sound pressure buzzer and the production method thereof, which can not only improve the product performance, simplify the installation mode, optimize the production process, improve the production efficiency and save the cost.
The technical scheme of the application is as follows:
a welding-free high-frequency high-sound pressure buzzer comprises an upper shell and a lower shell, wherein the upper shell is detachably connected with the lower shell, and a cavity formed by the upper shell and the lower shell is internally provided with a quality sheet, a vibrating diaphragm sheet, a magnetic ring, a coil provided with an iron core and a circuit board in sequence from top to bottom; the device is characterized in that a step part is arranged on the outer side surface of the upper shell; the outer side surface of the step part is provided with at least two upper inserts, and the outer side surface of the lower shell is provided with a lower insert which can be spliced with the upper inserts; the upper insert and the lower insert are respectively provided with an upper jack and a lower jack, the upper jack and the lower jack are communicated, and plugs capable of moving in the upper jack and the lower jack are arranged in the upper jack and the lower jack; the lower side of the lower insert is provided with a plurality of grooves, and the side surface of the lower insert between the grooves forms an elastic claw; the upper shell and the lower shell are connected through a plurality of buckling devices; two groups of patch parts are oppositely arranged on the circuit board, and each patch part comprises a contact pin and a welding part; and the positions of the coils corresponding to the patch parts are provided with abdicating parts.
The upper insert and the lower insert are both cylindrical. Because the upper insert and the lower insert adopt the cylindrical shape, the upper insert and the lower insert can be more attached to the cylindrical upper shell and the lower shell, and the upper insert and the lower insert are also more firmly installed during installation.
The inner side, close to the upper jack, of the bottom end of the upper insert is provided with a first annular flange, so that a clamping groove is formed at the outer side, far away from the upper jack, of the bottom end of the upper insert; the outer side of the top end of the lower insert far away from the lower jack is provided with a second annular flange matched with the clamping groove. Through the cooperation of draw-in groove and second annular flange, make the inserts down can insert in the inserts, thereby realize the prepositioning and the installation of upper and lower casing.
The second annular flange is in interference fit with the clamping groove. Because of the interference fit, the upper shell and the lower shell are firmly installed.
An annular groove is formed in the lower side face of the step part; the top surface of the lower shell is provided with a third annular flange matched with the annular groove. The upper shell and the lower shell are more convenient to install through the matching of the annular groove and the third annular flange.
The clamping device comprises a clamping edge protruding out of the side face of the upper shell, and a clamping groove is formed in the center of the clamping edge; the outer side surface of the lower shell is provided with a buckle which can be inserted into the clamping groove. By inserting the buckle into the clamping groove, on one hand, the upper shell and the lower shell are firmly connected under the action of the clamping groove and the second annular flange, and on the other hand, the assembly and the disassembly are convenient; and because the upper shell and the lower shell are connected by adopting the clamping groove and the clamping buckle, the structure can be directly sealed and fixed without epoxy encapsulation, thereby greatly reducing the production procedures and the production period and greatly saving the cost.
The thickness of the quality sheet is 0.16-0.20mm. The thickness of the mass sheet is 0.16-0.20mm, so that the overall sound pressure of the buzzer can be greatly improved.
The thickness of the mass sheet is 0.18mm. When the thickness of the mass sheet is 0.18mm, the sound pressure of the whole buzzer can be improved to the greatest extent.
The gap between the vibrating diaphragm and the iron core is 0.36-0.38mm; the height of the cavity is 5.8-6.8mm. The whole magnetic energy of the buzzer is concentrated on the vibrating diaphragm and matched with a larger inner cavity structure, so that the buzzer has a wider frequency band and higher sound pressure; the buzzer has a very wide frequency band and high sound pressure at a low frequency part; the high-frequency part is particularly obvious, the bandwidth is 1400-2600 Hz, and the sound pressure is more than 95 db.
The production method of the welding-free high-frequency high-sound pressure buzzer is characterized by comprising the following steps of: step 1: winding, namely winding the iron core to form a coil;
step 2: the lower shell is placed on the circulation tool;
step 3: the circuit board is arranged on the glue circuit board, and the circuit board is arranged in the lower shell after glue is applied to the lower shell by a glue dispenser;
step 4: the coil is coated with the coil, and the coil in the step 1 is glued on the circuit board by using a glue dispenser to glue the circuit board;
step 5: micro-spot welding, namely spot-welding a wire on a welding part of a circuit board;
step 6: measuring polarity, and detecting polarity of the wire electrode;
step 7: the magnetic ring is arranged on the magnetic ring, a layer of glue is sprayed on the iron core, and the magnetic ring is adhered to the iron core;
step 8: arranging the box, placing the lower shell into the turnover box, and then entering the next working procedure;
step 9: curing glue;
step 10: magnetic transfer, the lower shell is subjected to magnetic transfer;
step 11: clearing magnetism, namely clearing magnetism on the lower shell;
step 12: measuring the gap, and measuring the distance from the top end of the iron core to the step of the diaphragm placed on the magnetic ring;
step 13: assembling, namely, when the upper shell and the lower shell are assembled together, spot welding the membrane and the mass sheet together;
step 14: testing, namely detecting the resistance, sound pressure and current of the assembled product;
step 15: and (5) finishing assembly.
The beneficial effects of the application are as follows: the buzzer has a wider frequency band and higher sound pressure at a low frequency part, is particularly obvious at a high frequency part, and has a high frequency band of 1400-2600 Hz and a sound pressure of more than 95 db; the buzzer structure adopts a welding-free structure mode, and is arranged on the circuit board in a simple direct-insertion manner, so that the problems of complicated installation and difficult disassembly in the past are solved; the production process is simplified, the production efficiency is improved, and the cost is reduced; the buzzer adopts a novel mounting and fixing mode, avoids the old welding process and is convenient to mount and dismount.
Drawings
The foregoing and other objects, features, and advantages of the application will become apparent from the following detailed description taken in conjunction with the accompanying drawings.
Wherein: FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a schematic view of the bottom structure of the present application;
FIG. 3 is a schematic top view of the present application;
FIG. 4 is a schematic view of a cross-sectional structure of A-A of the present application;
FIG. 5 is a schematic view of a B-B cross-sectional structure of the present application;
FIG. 6 is a schematic view of the structure of the card edge according to the present application;
FIG. 7 is a schematic illustration of a bayonet structure of the present application;
FIG. 8 is a schematic diagram of an explosive structure according to the present application;
FIG. 9 is a schematic diagram of the process flow of the present application;
FIG. 10 is a schematic diagram of the product process flow before the implementation of the application;
in the drawing, 1 is an upper shell, 2 is a lower shell, 3 is a mass sheet, 4 is a vibrating diaphragm, 5 is a magnetic ring, 6 is a coil provided with an iron core, 7 is a circuit board, 8 is a step part, 9 is an upper insert, 10 is a lower insert, 11 is an upper insert, 12 is a lower insert, 13 is a plug, 14 is a slot, 15 is an elastic claw, 16 is a contact pin, 17 is a first annular flange, 18 is a clamping groove, 19 is a second annular flange, 20 is an annular groove, 21 is a third annular flange, 22 is a clamping edge, 23 is a clamping groove, 24 is a buckle, 25 is a gap, 26 is an arc-shaped groove, 27 is an inserting rod, 28 is a triangle claw, 29 is a limit rod, 30 is a limit cover, 31 is a patch part, 33 is a welding part, and 34 is a relief part.
Detailed Description
Referring to fig. 1, a welding-free high-frequency high-sound pressure buzzer comprises an upper shell 1 and a lower shell 2, wherein the upper shell is detachably connected with the lower shell, and a cavity formed by the upper shell and the lower shell is internally provided with a mass sheet 3, a vibrating diaphragm sheet 4, a magnetic ring 5, a coil 6 provided with an iron core and a circuit board 7 from top to bottom in sequence; the device is characterized in that a step part 8 is arranged on the outer side surface of the upper shell; the outer side surface of the step part is provided with at least two upper inserts 9, and the outer side surface of the lower shell is provided with a lower insert 10 which can be inserted with the upper inserts; the upper insert and the lower insert are respectively provided with an upper jack 11 and a lower jack 12, the upper jack and the lower jack are communicated, and plugs 13 which can move in the upper jack and the lower jack are arranged in the upper jack and the lower jack; the lower side of the lower insert is provided with a plurality of grooves 14, and the side surface of the lower insert between the grooves is provided with an elastic claw 15; the upper shell and the lower shell are connected through a plurality of buckling devices; two groups of patch parts are oppositely arranged on the circuit board, and each patch part comprises a contact pin 16 and a welding part; and the positions of the coils corresponding to the patch parts are provided with abdicating parts. The upper insert and the lower insert are installed, so that on one hand, the upper shell and the lower shell are positioned and installed in advance, and on the other hand, the upper jack and the lower jack are communicated; the plug can move in the upper jack and the lower jack, the lower side of the lower jack is provided with a plurality of grooves, and the lower insert between the grooves forms an elastic claw, so when the buzzer is mounted on the PCB, the elastic claw of the lower insert can be mounted in the mounting hole of the PCB, and then the plug is moved to move into the lower jack, so that the elastic claw is tensioned, and the buzzer and the PCB can be firmly connected; the upper shell and the lower shell are firmly connected by arranging the clamping device; the structure optimizes the performance and the production process of the buzzer, greatly shortens the production period and improves the production efficiency; the novel welding-free structure mode is adopted, and the operability of the mounting, dismounting and maintenance of the buzzer is improved by simply obtaining the direct-inserting type mounting on the circuit board, so that the problems of complicated mounting and difficult dismounting in the past are solved, the buzzer and the mounting circuit board are prevented from being damaged, the time and the cost are saved, and the working efficiency is improved; because the two groups of patch parts are oppositely arranged on the surface (hereinafter referred to as the front surface of the circuit board) of the circuit board, which is contacted with the coil, and the coil is also provided with the abdication part for abdication of the patch parts, when the wire is spot-welded, the wire is only needed to be spot-welded on the front surface of the circuit board, so that the production is simpler and more convenient, and the automatic production can be realized.
The following is a description of the installation process:
during installation, the contact pin is directly inserted into the installation PCB, the plug on the upper insert is deformed and clamped on the installation PCB, the plug is pushed downwards to lock the elastic clamping jaw on the lower part of the lower insert, so that the plug cannot be deformed, and the plug is further fixedly installed on the PCB; when the plug is detached, the elastic claw can deform only by pushing the plug to the upper part and can be withdrawn from the PCB.
The upper insert and the lower insert are both cylindrical. Because the upper insert and the lower insert adopt the cylindrical shape, the upper insert and the lower insert can be more attached to the cylindrical upper shell and the lower shell, and the upper insert and the lower insert are also more firmly installed during installation.
The inner side, close to the upper jack, of the bottom end of the upper insert is provided with a first annular flange 17, so that a clamping groove 18 is formed at the outer side, far away from the upper jack, of the bottom end of the upper insert; the outer side of the top end of the lower insert, which is far away from the lower jack, is provided with a second annular flange 19 matched with the clamping groove for use. Through the cooperation of draw-in groove and second annular flange, make the inserts down can insert in the inserts, thereby realize the prepositioning and the installation of upper and lower casing.
The second annular flange is in interference fit with the clamping groove. Because of the interference fit, the upper shell and the lower shell are firmly installed.
An annular groove 20 is formed in the lower side face of the step part; the lower housing top surface is provided with a third annular flange 21 for cooperation with the annular groove. The upper shell and the lower shell are more convenient to install through the matching of the annular groove and the third annular flange.
The clamping device comprises a clamping edge 22 protruding out of the side face of the upper shell, and a clamping groove 23 is formed in the center of the clamping edge; the outer side surface of the lower shell is provided with a buckle 24 which can be inserted into the clamping groove. By inserting the buckle into the clamping groove, on one hand, the upper shell and the lower shell are firmly connected under the action of the clamping groove and the second annular flange, and on the other hand, the assembly and the disassembly are convenient; and because the upper shell and the lower shell are connected by adopting the clamping groove and the clamping buckle, the structure can be directly sealed and fixed without epoxy encapsulation, thereby greatly reducing the production procedures and the production period and greatly saving the cost.
The buckling device comprises an arc-shaped groove 26 arranged on the bottom surface of the upper shell, the cross section of the arc-shaped groove is in a T shape, the top surface of the lower shell is provided with a slot communicated with the arc-shaped groove, and an inserting rod 27 which can be inserted into the slot and the arc-shaped groove; elastic triangular clamping claws 28 are arranged on two sides of the top end of the inserted link, and a limit cover is arranged at the bottom end of the inserted link; the bottom surface of the lower shell is provided with a limit groove, two sides of the limit cover 30 are provided with limit rods 29 which can be inserted into the limit groove, and the limit rods outside the limit cover are provided with spring clamping beads which can be clamped into through holes on the side wall surfaces of the limit groove. The arc-shaped groove is inserted through the inserted link, and as the two sides of the top end of the inserted link are provided with elastic triangle claws, the connection between the upper shell and the lower shell is realized; the rotation of the inserted link is avoided through a limit cover arranged at the bottom end of the inserted link; the position of the limit cover is fixed through the spring clamping beads; the inserting rod is rotated after the limiting cover is removed, so that triangular clamping claws on two sides of the inserting rod are not clamped on two sides of the top end of the arc-shaped groove; by adopting the buckle structure, the outer side surface of the upper shell is not required to be provided with the protruding part, so that the appearance is more attractive, and the service life is longer.
The thickness of the quality sheet is 0.16-0.20mm. The thickness of the mass sheet is 0.16-0.20mm, so that the overall sound pressure of the buzzer can be greatly improved.
The thickness of the mass sheet is 0.18mm. When the thickness of the mass sheet is 0.18mm, the sound pressure of the whole buzzer can be improved to the greatest extent.
The gap 25 between the vibrating diaphragm and the iron core is 0.36-0.38mm; the height of the cavity is 5.8-6.8mm. The whole magnetic energy of the buzzer is concentrated on the vibrating diaphragm and matched with a larger inner cavity structure, so that the buzzer has a wider frequency band and higher sound pressure; the buzzer has a very wide frequency band and high sound pressure at a low frequency part; the high-frequency part is particularly obvious, the bandwidth is 1400-2600 Hz, and the sound pressure is more than 95 db.
The production method of the welding-free high-frequency high-sound pressure buzzer is characterized by comprising the following steps of: step 1: winding, namely winding the iron core to form a coil; step 2: the lower shell is placed on the circulation tool; step 3: the circuit board is arranged on the glue circuit board, and the circuit board is arranged in the lower shell after glue is applied to the lower shell by a glue dispenser; step 4: the coil is coated with the coil, and the coil in the step 1 is glued on the circuit board by using a glue dispenser to glue the circuit board; step 5: micro-spot welding, namely spot-welding a wire on a welding part of a circuit board; step 6: measuring polarity, and detecting polarity of the wire electrode; step 7: the magnetic ring is arranged on the magnetic ring, a layer of glue is sprayed on the iron core, and the magnetic ring is adhered to the iron core; step 8: arranging the box, placing the lower shell into the turnover box, and then entering the next working procedure; step 9: curing glue; step 10: magnetic transfer, the lower shell is subjected to magnetic transfer; step 11: clearing magnetism, namely clearing magnetism on the lower shell; step 12: measuring the gap, and measuring the distance from the top end of the iron core to the step of the diaphragm placed on the magnetic ring; step 13: assembling, namely, when the upper shell and the lower shell are assembled together, spot welding the membrane and the mass sheet together; step 14: testing, namely detecting the resistance, sound pressure and current of the assembled product; step 15: and (5) finishing assembly. At present, when a wire is welded by welding spots, the welding spots are arranged on the back of the circuit board, the circuit board is required to be turned over to perform spot welding during assembly, and the tooling is required to be replaced for a plurality of times in the process, so that the production efficiency is greatly reduced; in addition, the upper shell and the lower shell are connected by adopting the clamping grooves and the buckles, so that the structure can be directly sealed and fixed without epoxy encapsulation, the production procedures and the production period are greatly reduced, and the cost is greatly saved.
The foregoing description is only a preferred embodiment of the present application, and is not intended to limit the application in any way, but any simple modification or equivalent variation of the above embodiment according to the technology of the present application falls within the scope of the present application.
Claims (8)
1. A welding-free high-frequency high-sound pressure buzzer comprises an upper shell and a lower shell, wherein the upper shell is detachably connected with the lower shell, and a cavity formed by the upper shell and the lower shell is internally provided with a quality sheet, a vibrating diaphragm sheet, a magnetic ring, a coil provided with an iron core and a circuit board in sequence from top to bottom; the device is characterized in that a step part is arranged on the outer side surface of the upper shell; the outer side surface of the step part is provided with at least two upper inserts, and the outer side surface of the lower shell is provided with a lower insert which can be spliced with the upper inserts; the upper insert and the lower insert are respectively provided with an upper jack and a lower jack, the upper jack and the lower jack are communicated, and plugs capable of moving in the upper jack and the lower jack are arranged in the upper jack and the lower jack; the lower side of the lower insert is provided with a plurality of grooves, and the side surface of the lower insert between the grooves forms an elastic claw; the upper shell and the lower shell are connected through a plurality of buckling devices; two groups of patch parts are oppositely arranged on the circuit board, and each patch part comprises a contact pin and a welding part; the coil is provided with a abdication part at the position corresponding to the patch part;
after the elastic claw of the lower insert is installed in the installation hole of the PCB, the plug is moved, so that the plug moves into the lower jack to realize the tensioning of the elastic claw;
the thickness of the mass sheet is 0.16-0.20mm, and the gap between the vibrating diaphragm sheet and the iron core is 0.36-0.38mm; the height of the cavity is 5.8-6.8mm.
2. The welding-free high frequency high sound pressure buzzer of claim 1, wherein said upper and lower inserts are cylindrical.
3. The welding-free high-frequency high-sound pressure buzzer as claimed in claim 1, wherein a first annular flange is arranged at the inner side of the bottom end of the upper insert close to the upper jack, so that a clamping groove is formed at the outer side of the bottom end of the upper insert far from the upper jack; the outer side of the top end of the lower insert far away from the lower jack is provided with a second annular flange matched with the clamping groove.
4. The welding-free high frequency high sound pressure buzzer of claim 1, wherein said second annular flange is interference fit with said notch.
5. The welding-free high-frequency high-sound pressure buzzer as claimed in claim 1, wherein an annular groove is formed in the lower side surface of the step part; the top surface of the lower shell is provided with a third annular flange matched with the annular groove.
6. The welding-free high-frequency high-sound pressure buzzer as claimed in claim 1, wherein the fastening device comprises a clamping edge protruding out of the side surface of the upper shell, and a clamping groove is arranged in the center of the clamping edge; the outer side surface of the lower shell is provided with a buckle which can be inserted into the clamping groove.
7. The welding-free high frequency high sound pressure buzzer of claim 1, wherein said mass sheet is 0.18mm thick.
8. A method of producing the welding-free high-frequency high-sound pressure buzzer of any one of claims 1 to 7, comprising the steps of:
step 1: winding, namely winding the iron core to form a coil;
step 2: the lower shell is placed on the circulation tool;
step 3: the circuit board is arranged on the glue circuit board, and the circuit board is arranged in the lower shell after glue is applied to the lower shell by a glue dispenser;
step 4: the coil is coated with the coil, and the coil in the step 1 is glued on the circuit board by using a glue dispenser to glue the circuit board;
step 5: micro-spot welding, namely spot-welding a wire on a welding part of a circuit board;
step 6: measuring polarity, and detecting polarity of the wire electrode;
step 7: the magnetic ring is arranged on the magnetic ring, a layer of glue is sprayed on the iron core, and the magnetic ring is adhered to the iron core;
step 8: arranging the box, placing the lower shell into the turnover box, and then entering the next working procedure;
step 9: curing glue;
step 10: magnetic transfer, the lower shell is subjected to magnetic transfer;
step 11: clearing magnetism, namely clearing magnetism on the lower shell;
step 12: measuring the gap, and measuring the distance from the top end of the iron core to the step of the diaphragm placed on the magnetic ring;
step 13: assembling, namely, when the upper shell and the lower shell are assembled together, spot welding the membrane and the mass sheet together;
step 14: testing, namely detecting the resistance, sound pressure and current of the assembled product;
step 15: and (5) finishing assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611245539.9A CN106504735B (en) | 2016-12-29 | 2016-12-29 | Welding-free high-frequency high-sound pressure buzzer and production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611245539.9A CN106504735B (en) | 2016-12-29 | 2016-12-29 | Welding-free high-frequency high-sound pressure buzzer and production method |
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| Publication Number | Publication Date |
|---|---|
| CN106504735A CN106504735A (en) | 2017-03-15 |
| CN106504735B true CN106504735B (en) | 2023-08-11 |
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| CN201611245539.9A Active CN106504735B (en) | 2016-12-29 | 2016-12-29 | Welding-free high-frequency high-sound pressure buzzer and production method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109599086B (en) * | 2019-01-25 | 2020-07-14 | 汉得利（常州）电子股份有限公司 | High sound pressure level buzzer with gathering water drainage type sounding hole |
| CN110400556B (en) * | 2019-06-13 | 2021-05-07 | 新沂市承翔电子有限公司 | Buzzer structure convenient to mount and provided with composite audio |
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| JP2011196946A (en) * | 2010-03-23 | 2011-10-06 | Yazaki Corp | Fixing structure of instrument unit |
| CN103152681A (en) * | 2013-03-29 | 2013-06-12 | 中国电子科技集团公司第三研究所 | Piezoelectric ceramic transducer |
| CN203456090U (en) * | 2013-09-05 | 2014-02-26 | 苏州朗博电子科技有限公司 | Buzzer |
| CN203562539U (en) * | 2013-11-13 | 2014-04-23 | 苏州工业园区丰年科技有限公司 | PCB wire connector terminal |
| CN204102558U (en) * | 2014-07-24 | 2015-01-14 | 汉得利（常州）电子股份有限公司 | A kind of buckle-type exempts to weld vehicle-mounted hummer housing |
| CN106098047A (en) * | 2016-08-23 | 2016-11-09 | 蒋寅 | A kind of electromagnetic active buzzer and manufacture method thereof |
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2016
- 2016-12-29 CN CN201611245539.9A patent/CN106504735B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011196946A (en) * | 2010-03-23 | 2011-10-06 | Yazaki Corp | Fixing structure of instrument unit |
| CN103152681A (en) * | 2013-03-29 | 2013-06-12 | 中国电子科技集团公司第三研究所 | Piezoelectric ceramic transducer |
| CN203456090U (en) * | 2013-09-05 | 2014-02-26 | 苏州朗博电子科技有限公司 | Buzzer |
| CN203562539U (en) * | 2013-11-13 | 2014-04-23 | 苏州工业园区丰年科技有限公司 | PCB wire connector terminal |
| CN204102558U (en) * | 2014-07-24 | 2015-01-14 | 汉得利（常州）电子股份有限公司 | A kind of buckle-type exempts to weld vehicle-mounted hummer housing |
| CN106098047A (en) * | 2016-08-23 | 2016-11-09 | 蒋寅 | A kind of electromagnetic active buzzer and manufacture method thereof |
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| CN106504735A (en) | 2017-03-15 |
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