CN110164408B - Sustainable sounding electromagnetic buzzer with heat dissipation function - Google Patents
Sustainable sounding electromagnetic buzzer with heat dissipation function Download PDFInfo
- Publication number
- CN110164408B CN110164408B CN201910514521.1A CN201910514521A CN110164408B CN 110164408 B CN110164408 B CN 110164408B CN 201910514521 A CN201910514521 A CN 201910514521A CN 110164408 B CN110164408 B CN 110164408B
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- electromagnetic
- base
- heat dissipation
- driving device
- upper cover
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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
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means
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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
- G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
- G10K9/22—Mountings; Casings
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a sustainable sounding electromagnetic buzzer with a heat dissipation function, which comprises a base, an electromagnetic driving device and an upper cover, wherein the base is provided with the electromagnetic driving device and the upper cover, the upper cover is arranged outside the electromagnetic driving device, a rotary driving device is arranged in an inner cavity of the base, a cross rod is arranged above the rotary driving device, one side of the cross rod is provided with a pair of conductive joints, the top of the inner cavity of the base is provided with a plurality of pairs of conductive contacts, the conductive contacts can be in contact with the conductive joints, and the top of each pair of conductive contacts is connected with a group of electromagnetic driving devices. According to the invention, three electromagnetic driving devices are arranged, only one electromagnetic driving device is electrified at the same time to drive the vibrating reed to vibrate and sound, so that the working time of a single coil is effectively reduced, and each coil stops working for a period of time under the condition that the buzzer buzzes for a long time, so that the situation that the buzzer is burnt out due to continuous heating is avoided.
Description
Technical Field
The invention relates to the technical field of electromagnetic buzzer equipment, in particular to a sustainable sounding electromagnetic buzzer with a heat dissipation function.
Background
The electromagnetic buzzer is an electroacoustic device which can drive a metal diaphragm to vibrate and sound by using an audio signal to generate a changing magnetic field through an electromagnetic coil. An electromagnetic type bee calling organ that has heat dissipation function (patent number: 201711361381.6) has, and its bee calling organ main part bottom is connected with colored lens through the joint ware, colored lens below is provided with the heat dissipation layer, one side of bearing the weight of the protective housing is fixed with the picture peg, install power adapter on the picture peg, and power adapter has seted up the radiating groove on the surface, and the inside electronic component of bee calling organ main part is connected with the fin that sets up in bee calling organ main part one side through the heat-conducting rod. The electromagnetic buzzer adopts elements such as a heat dissipation layer, a heat dissipation groove, a heat dissipation hole, a heat dissipation fin and the like, has a strong heat dissipation function, and has the following problems: (1) The buzzer is too large due to too many heat dissipation elements, and is not suitable for an integrated circuit; (2) The device is externally covered with a waterproof protective cover, so that the sounding effect is poor.
The existing striking type electromagnetic buzzer (patent number: 201420102530.2) takes a rotatable cylinder with a protruding conductive interface as an axis, and is communicated with an electromagnet to attract a striking hammer to strike the electromagnet to produce sound when the cylinder rotates. The striking type electromagnetic buzzer adopts a striking type sounding method, is clear and crisp in sounding and long in service life, but has the problems that the fixed end of the striking type buzzer is stressed greatly, and a circuit board is burdened due to long-time use, so that the buzzer falls off and even the circuit board is broken.
Disclosure of Invention
The invention aims to: the invention aims to provide a sustainable sounding electromagnetic buzzer with a heat dissipation function, which can effectively solve the problem that a common buzzer generates heat under the condition of long-time sounding to cause element damage.
The technical scheme is as follows: the electromagnetic driving device and the upper cover are arranged on the base, the upper cover is arranged on the outer side of the electromagnetic driving device, the rotary driving device is arranged in an inner cavity of the base, a cross rod is arranged above the rotary driving device, a pair of conductive connectors are arranged on one side of the cross rod, a plurality of pairs of conductive contacts are arranged at the top of the inner cavity of the base, the conductive contacts can be in contact with the conductive connectors, and a group of electromagnetic driving devices is connected to the top of each pair of conductive contacts.
The electromagnetic driving device comprises a heat dissipation column, an iron core is arranged in the heat dissipation column, an electromagnetic coil is wound outside the heat dissipation column, and the heat dissipation column is made of heat-conducting silica gel materials and can effectively dissipate heat generated by the buzzer into the outside.
The electromagnetic coil is connected with the conductive contact.
Magnets are arranged in the center of the electromagnetic driving device and the inner part of the upper cover, wherein the magnet in the center of the electromagnetic driving device is fixed at the top of the base; and the magnet inside the upper cover is fixed on the inner wall of the upper cover corresponding to the electromagnetic driving device.
A vibrating plate is arranged above the electromagnetic driving device, a metal sheet is arranged on the vibrating plate, and two ends of the vibrating plate are fixed with the upper cover.
The top of the upper cover is provided with a sounding hole.
The rotary driving device comprises a rotary motor, the rotary motor is fixed at the bottom of the inner cavity of the base, a rotating shaft is sleeved on the rotary motor, the top of the rotating shaft is fixed with the top of the inner cavity of the base, a cross rod is connected above the rotating shaft, the rotary motor drives the rotating shaft and the cross rod to rotate, the conductive connector is in contact with the conductive contact, the electromagnetic coil is switched on to generate a magnetic field, and the vibrating piece is made to vibrate and sound.
The base and the upper cover are made of heat-conducting silica gel materials, and heat generated by the buzzer can be effectively dissipated into the outside.
And a welding disc is fixed at the bottom of the base.
The working principle is as follows: when the electromagnetic vibration device is used, the rotating motor is electrified, the rotating motor drives the rotating shaft and the cross rod to rotate, when the cross rod rotates to a certain angle, the conductive connector is connected with a certain pair of conductive contacts, the electromagnetic coils above the conductive contacts are switched on, the other two pairs of non-switched conductive contacts and the corresponding electromagnetic coils do not work, the electromagnetic coils and the magnets jointly generate a magnetic field to attract a metal sheet above the device, the metal sheet drives the vibrating piece to vibrate, the vibrating piece vibrates and sounds, and the sound is transmitted through the sound emission hole in the center of the upper cover.
Has the advantages that: the invention has the following advantages:
(1) According to the invention, three electromagnetic driving devices are arranged, only one electromagnetic driving device is electrified at the same time to drive the vibrating reed to vibrate and sound, so that the working time of a single coil is effectively reduced, and each coil stops working for a period of time under the condition that the buzzer buzzes for a long time, so that the situation that the buzzer is burnt out due to continuous heating is avoided;
(2) The base, the upper cover and the radiating column which is hollow inside are all made of heat-conducting silica gel which is a radiating material, when the buzzer works, the coil generates heat, and the radiating column guides the heat generated by the coil into the base and the upper cover in time, so that the heat is quickly radiated into the outside, the electromagnetic driving device is kept at a proper temperature, and burnout is avoided.
Drawings
FIG. 1 is a front sectional view of the present invention;
fig. 2 is a top view of the present invention without the cover.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the electromagnetic driving device comprises a base 1, an electromagnetic driving device 2 and an upper cover 3, wherein the electromagnetic driving device 2 and the upper cover 3 are arranged on the top of the base 1, the upper cover 3 covers the electromagnetic driving device 2, and the upper cover 3 is bonded with the base 1 by using an adhesive with good heat dissipation performance. The base 1 is a hollow cylindrical structure, and a rotary driving device is installed at the bottom of the inner cavity of the base 1. The rotary driving device comprises a rotary motor 13, the rotary motor 13 is installed at the central position of the bottom of the inner side of the base 1, a rotary shaft 12 is sleeved at the center of the rotary motor 13, the top of the rotary shaft 12 is fixed with the top of the inner cavity of the base 1, a cross rod 14 is sleeved above the rotary shaft 12, and the rotary motor 13 can drive the rotary shaft 12 and the cross rod 14 to rotate together. One side of the cross bar 14 is provided with a pair of conductive contacts 11 distributed at a certain distance, and the top of the inner cavity of the base 1 is provided with three pairs of conductive contacts 16, when the cross bar 14 rotates a certain angle, one pair of conductive contacts 16 can be contacted with the conductive contacts 11, and then the electromagnetic coil 22 is switched on to generate a magnetic field so that the vibrating reed 33 vibrates to generate sound. A set of electromagnetic drives 2 is connected to the top of each pair of electrically conductive contacts 16. The three electromagnetic driving devices 2 are driven to work in turn by the rotary driving device, and only one device is in a working state at the same time.
As shown in fig. 2, the electromagnetic driving devices 2 are provided in three groups, and are uniformly distributed along the circumferential direction of the base 1. Each group of electromagnetic driving devices 2 comprises a heat dissipation column 24, the heat dissipation columns 24 and the base 1 are integrally formed, an internal hollow cylindrical structure is adopted, the three heat dissipation columns 24 are distributed in an equilateral triangle shape, and the electromagnetic driving devices 2 are arranged by taking the heat dissipation columns 24 as centers. The inside of the heat dissipation column 24 is provided with a core 23 conforming to the structure thereof, the core 23 is fixed inside the heat dissipation column 24 by an adhesive, the outside of the heat dissipation column 24 is provided with electromagnetic coils 22 surrounding the heat dissipation column 24, and a pair of conductive contacts 16 is correspondingly connected below each set of electromagnetic coils 22, as shown in fig. 1. The base 1, the upper cover 3 and the heat dissipation column 24 are made of heat-conducting silica gel, so that heat generated by the buzzer can be effectively dissipated to the outside. Magnets 21 are arranged in the center of the electromagnetic driving device 2 and the inner part of the upper cover 3, wherein the magnet 21 in the center of the electromagnetic driving device 2 is fixed in the center of the top of the base 1; the magnet 21 inside the upper cover 3 is fixed on the inner wall of the upper cover corresponding to the electromagnetic driving device 2, the inner wall of the upper cover 3 is provided with three magnets 21 which are uniformly distributed at intervals, the electromagnetic coil 22 and the magnet 21 jointly generate a magnetic field to attract the metal sheet 32 above the device, and the metal sheet 32 drives the vibrating piece 33 to vibrate and produce sound.
As shown in fig. 1, a vibrating reed 33 is disposed above the electromagnetic driving device 2, three thin metal sheets 32 are disposed at intervals on the vibrating reed 33, both ends of the vibrating reed 33 are fixed to the inner wall of the upper lid 3, and a sound emitting hole 31 is disposed in the middle portion of the upper lid 3. The bottom of the base 1 is fixed with a pad 15, and is welded with the circuit board through the pad 15, when the circuit board is electrified, the rotating motor 13 can be electrified.
When the electromagnetic vibration device is used, the rotating motor is electrified, the rotating motor drives the rotating shaft and the cross rod to rotate, when the cross rod rotates to a certain angle, the conductive connector is connected with a certain pair of conductive contacts, the electromagnetic coils above the conductive contacts are switched on, the other two pairs of non-switched conductive contacts and the corresponding electromagnetic coils do not work, the electromagnetic coils and the magnets jointly generate a magnetic field to attract a metal sheet above the device, the metal sheet drives the vibrating piece to vibrate, the vibrating piece vibrates and sounds, and the sound is transmitted through the sound emission hole in the center of the upper cover. When the heat dissipation type buzzer works in a power-on mode, the coil and the vibrating piece can generate heat, and the base, the upper cover and the heat conduction column which are made of heat conduction silica gel made of heat dissipation materials can transmit the heat to the outside in time so as to prevent the buzzer from being changed in sound and even damaged due to burning out of the coil and the vibrating piece. Like this, through the inside rotary driving device drive three devices of base work in turn, and only one device is in operating condition at the same time to improve buzzer's life.
Claims (8)
1. The utility model provides a sustainable sound production electromagnetic type buzzer that possesses heat dissipation function, a serial communication port, including base, electromagnetic drive device and upper cover, the base on be equipped with electromagnetic drive device and upper cover, last housing in the electromagnetic drive device outside, rotary drive device is installed to the inner chamber of base, the horizontal pole is installed to rotary drive device's top, one side of horizontal pole is equipped with a pair of conductive contact, the top of base inner chamber is equipped with a plurality of to conductive contact, conductive contact can contact with conductive contact, every top to conductive contact all is connected with a set of electromagnetic drive device, electromagnetic drive device including the heat dissipation post, the inside of heat dissipation post is equipped with the iron core, the outside is around having solenoid, the heat dissipation post select for use heat conduction silica gel material.
2. The sustainable electromagnetic buzzer with a heat dissipation function of claim 1, wherein the electromagnetic coil is connected to the conductive contact.
3. The sustainable sound-production electromagnetic buzzer with the heat dissipation function as claimed in claim 1, wherein the center of the electromagnetic driving device and the inside of the upper cover are provided with magnets, wherein the magnet in the center of the electromagnetic driving device is fixed on the top of the base; and the magnet inside the upper cover is fixed on the inner wall of the upper cover corresponding to the electromagnetic driving device.
4. The electromagnetic buzzer capable of sounding continuously with a heat sink function as claimed in claim 1 or 3, wherein said electromagnetic driving device has a vibrating plate above it, said vibrating plate has a metal plate thereon, and two ends of said vibrating plate are fixed to said top cover.
5. The electromagnetic buzzer capable of continuously sounding with heat dissipation function as claimed in claim 1, wherein said top cover has a sounding hole.
6. The electromagnetic buzzer capable of sounding continuously with the function of dissipating heat as claimed in claim 1, wherein the rotation driving device comprises a rotation motor fixed at the bottom of the inner cavity of the base, a rotation shaft is sleeved on the rotation motor, the top of the rotation shaft is fixed with the top of the inner cavity of the base, and a cross bar is connected above the rotation shaft.
7. The electromagnetic buzzer capable of continuously sounding and having the heat dissipation function of claim 1, wherein the base and the upper cover are made of a heat-conducting silicone material.
8. The electromagnetic buzzer capable of sounding continuously with the function of dissipating heat as claimed in claim 1, wherein a pad is fixed on the bottom of the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514521.1A CN110164408B (en) | 2019-06-14 | 2019-06-14 | Sustainable sounding electromagnetic buzzer with heat dissipation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910514521.1A CN110164408B (en) | 2019-06-14 | 2019-06-14 | Sustainable sounding electromagnetic buzzer with heat dissipation function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110164408A CN110164408A (en) | 2019-08-23 |
| CN110164408B true CN110164408B (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910514521.1A Active CN110164408B (en) | 2019-06-14 | 2019-06-14 | Sustainable sounding electromagnetic buzzer with heat dissipation function |
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| CN (1) | CN110164408B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110675851A (en) * | 2019-10-11 | 2020-01-10 | 广州市番禺区大通电子有限公司 | Piezoelectric buzzer without bottom cover and assembling method thereof |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3540039A (en) * | 1967-10-16 | 1970-11-10 | Dole Valve Co | Warning device for automatic washing and drying machines |
| US4075626A (en) * | 1976-11-11 | 1978-02-21 | Kobishi Electric Co., Ltd. | Alarm buzzer |
| USRE31152E (en) * | 1976-11-11 | 1983-02-15 | Kobishi Electric Co., Ltd. | Alarm buzzer |
| US4195285A (en) * | 1978-12-01 | 1980-03-25 | Littelfuse, Inc. | Double buzzer assembly |
| CN203288236U (en) * | 2013-05-30 | 2013-11-13 | 黑龙江省延海高新科技有限责任公司 | Annular contactless automotive electronic horn |
| TR201308364A3 (en) * | 2013-07-11 | 2015-05-21 | Seger Ses Ve Elektrikli Gerecler Sanayi Anonim Sirketi | Structure preventing overheating of audible warning devices for vehicles |
| CN103745717B (en) * | 2013-12-20 | 2016-08-17 | 汉得利（常州）电子股份有限公司 | Double-driving buzzer |
| CN203746415U (en) * | 2014-03-07 | 2014-07-30 | 江苏海事职业技术学院 | Striking type electromagnetic buzzer |
| CN207503631U (en) * | 2017-11-30 | 2018-06-15 | 张俊 | A kind of rotary electromagnetic buzzer |
| CN108010509A (en) * | 2017-12-18 | 2018-05-08 | 兴化市天华机电有限公司 | A kind of electromagnetic buzzer for possessing heat sinking function |
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2019
- 2019-06-14 CN CN201910514521.1A patent/CN110164408B/en active Active
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| CN110164408A (en) | 2019-08-23 |
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