CN202711681U - Electromagnetic sounder for vehicle interior safety warning tones - Google Patents
Electromagnetic sounder for vehicle interior safety warning tones Download PDFInfo
- Publication number
- CN202711681U CN202711681U CN 201220384520 CN201220384520U CN202711681U CN 202711681 U CN202711681 U CN 202711681U CN 201220384520 CN201220384520 CN 201220384520 CN 201220384520 U CN201220384520 U CN 201220384520U CN 202711681 U CN202711681 U CN 202711681U
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- magnet
- coil
- vibrating reed
- base plate
- sound
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model relates to the field of sounders, and specifically relates to an electromagnetic sounder for vehicle interior safety warning tones. The electromagnetic sounder comprises a support, a magnet, a circuit board, a coil and a vibration plate, wherein the coil is arranged on the support, the magnet is arranged outside the coil and on the support, and the coil and the magnet are in the same plane; the vibration plate is arranged above the coil and the magnet, and a resonant cavity is arranged above the vibration plate. According to the utility model, the requirements of the vehicle interior safety warning tones are satisfied, and an electromagnetic buzzer having a vibration frequency of 1 KHz is provided.
Description
Technical field
This novel electric sound device field, espespecially electromagnetic sound of a kind of applicable automotive interior of relating to.
Background technology
Electromagnetic sound in the past the product frequency of utilization mostly at 2048Hz or 2700Hz, in the existing hummer, the electromagnetic energy reality that electric current produces is very little, be difficult to drive the vibrating reed normal operation, because automotive interior, for example securing band is not fastened driver's ear and need to obviously be heard a kind of prompting sound, this prompt tone frequency does not need too high, in order to avoid cause that human brain is irritated, in the existing technology, can not satisfy existing needs in the design of frequency, although can reach by improvement the vibration of 1000Hz, can not guarantee that the size of sound reaches requirement.
Summary of the invention
The utility model purpose is to abandon the shortcoming of prior art, provides a kind of simple in structure, and cost is low, can make audible frequency satisfy the electromagnetic sound of people's hearing requirement at the amplitude of 1000Hz and sound.
For solving the problems of the technologies described above, the technical scheme of this novel employing is as follows:
A kind of electromagnetic sound of automotive interior safety instruction sound, comprise support, magnet, circuit board, shell, coil and vibrating reed, described coil is set on the described support, the described magnet of described coil arranged outside, described magnet is arranged on the described support, described coil and described magnet are arranged on a side of the first end face of described vibrating reed, and the second end face of described vibrating reed is provided with a resonant cavity.
Described support comprises base plate, pillar and plate hole, and described pillar is arranged on the center of base plate, and perpendicular to described base plate.
Further, the wrapped described pillar of described coil forms a ring texture, and coil two is pulled out two plate holes that end passes respectively described base plate; Described magnet is a ring-shaped magnet, and its inside radius is greater than the external radius of the formed ring texture of described coil; And described magnet is arranged on the described base plate, and described vibrating reed is parallel to described base plate, and described vibrating reed is inhaled mutually with described magnet.
Further, described shell coats the periphery of described magnet; Consist of a resonator cavity between described vibrating reed and the described shell, and described resonator cavity is positioned at a side of the second end face of described vibrating reed.
This novel beneficial effect is: the vibrational energy transmission is finished by magnetic pull, so distance design limited (0.2mm) vibration of vibrating reed and magnetic pole is little, the sound that (about 0.1mm) sends is very low, so will be with a resonant cavity to rattle fully resonate (resonance), to reach the sympathetic response effect, design of the present utility model can be for the vibration frequency of needs design resonator cavity, and the frequency that reaches sound and the size of sound be satisfied needs simultaneously.And simple in structure, at the bottom of the cost, be highly suitable for the auditory tone cues of automotive interior.
Description of drawings
Fig. 1 is this novel explosive view;
Fig. 2 is this novel sectional view;
Fig. 3 is that traditional electromagnetic sound resonance frequency is at the frequency sweep curve of 2048Hz;
Fig. 4 is that this electromagnet squealer resonance frequency is at the frequency sweep curve of 1000Hz.
Embodiment
Below in conjunction with the drawings and specific embodiments to this novel being described in further detail.
As depicted in figs. 1 and 2, a kind of electromagnetic sound of automotive interior safety instruction sound, comprise support 5, magnet 3, circuit board 6, shell 1, coil 4 and vibrating reed 2, described coil 4 is set on the described support 5, described coil 4 arranged outside have described magnet 3, described magnet 3 is arranged on the described support 5, and described coil 4 and described magnet 3 are arranged on a side of the first end face 21 of described vibrating reed 2, and the second end face 22 of described vibrating reed 2 is provided with a resonant cavity.
Described support 5 comprises base plate, pillar and plate hole, and described pillar is arranged on the center of base plate, and perpendicular to described base plate.
Further, described coil 4 wrapped described pillars form a ring texture, and 4 liang of coils are pulled out two plate holes that end passes respectively described base plate; Described magnet 3 is a ring-shaped magnet 3, and its inside radius is greater than the external radius of described coil 4 formed ring texturees; And described magnet 3 is arranged on the described base plate, and described vibrating reed 2 is parallel to described base plate, and described vibrating reed 2 is inhaled mutually with described magnet 3.
Further, described shell 1 coats the periphery of described magnet 3; Consist of a resonator cavity between described vibrating reed 2 and the described shell 1, and described resonator cavity is positioned at a side of the second end face 22 of described vibrating reed 2.
The electromagnetic energy reality that electric current produces is very little, be difficult to drive vibrating reed 2 normal operations, so utilize the another one magnetic interference, the magnetic energy in control and this magnetic field of superposition is to obtain mechanical property superposition magnetic energy to the magnetic pull increase of vibrating reed 2, force vibrating reed 2 displacements, pressurized air, sound, vibrating reed 2 is with the unidirectional displacement vibration of coil 4 directions, vibration number is subjected to the signal frequency control, amplitude is directly proportional with the power input size, the vibrational energy transmission is finished by magnetic pull, so vibrating reed 2 is little with distance design limited (0.2mm) vibration of magnetic pole, the sound that (about 0.1mm) sends is very low, so will be with a resonant cavity to rattle fully resonate (resonance), to reach the sympathetic response effect, because resonant cavity is relatively strict to frequency response, so the width of cloth is narrower frequently for resonance, frequency response is relatively poor, the cavity volume of resonator cavity is drawn by last of the twelve Earthly Branches nurse hertz formula, and sound radiation bore dia and sound radiation hole height also can be calculated by this formula, and the computing method of this formula are that principles well-known is not repeated.
The tradition electromagnetic sound, resonance frequency is at 2048Hz mostly, its frequency sweep curve is as shown in Figure 3.Characteristics are that peak value and frequency band are narrow.
Electric magnetic buzzer resonance frequency after the improvement is 1000Hz, and its frequency sweep curve as shown in Figure 4.Be characterized in bandwidth, be suitable on the automotive safety voice prompt.
The above, it only is this novel preferred embodiment, be not that novel technical scope is imposed any restrictions, therefore this novel technical spirit of every foundation all still belongs in the scope that originally is equal to the utility model technical scheme any trickle modification, equivalent variations and modification that above embodiment does.
Claims (4)
1. the electromagnetic sound of an automotive interior safety instruction sound, comprise support, magnet, circuit board, shell, coil and vibrating reed, described coil is set on the described support, described coil arranged outside has described magnet, described magnet is arranged on the described support, described coil and described magnet are arranged on a side of the first end face of described vibrating reed, it is characterized in that, the second end face of described vibrating reed is provided with a resonant cavity.
2. the electromagnetic sound of a kind of automotive interior safety instruction sound according to claim 1 is characterized in that, described support comprises base plate, pillar and plate hole, and described pillar is arranged on the center of base plate, and perpendicular to described base plate.
3. the electromagnetic sound of a kind of automotive interior safety instruction sound according to claim 1 and 2 is characterized in that, the wrapped described pillar of described coil forms a ring texture, and coil two is pulled out two plate holes that end passes respectively described base plate; Described magnet is a ring-shaped magnet, and its inside radius is greater than the external radius of the formed ring texture of described coil; And described magnet is arranged on the described base plate, and described vibrating reed is parallel to described base plate, and described vibrating reed is inhaled mutually with described magnet.
4. the electromagnetic sound of a kind of automotive interior safety instruction sound according to claim 1 is characterized in that, described shell coats the periphery of described magnet; Consist of a resonator cavity between described vibrating reed and the described shell, and described resonator cavity is positioned at a side of the second end face of described vibrating reed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384520 CN202711681U (en) | 2012-08-06 | 2012-08-06 | Electromagnetic sounder for vehicle interior safety warning tones |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384520 CN202711681U (en) | 2012-08-06 | 2012-08-06 | Electromagnetic sounder for vehicle interior safety warning tones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202711681U true CN202711681U (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220384520 Expired - Lifetime CN202711681U (en) | 2012-08-06 | 2012-08-06 | Electromagnetic sounder for vehicle interior safety warning tones |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202711681U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236843A (en) * | 2013-05-08 | 2013-08-07 | 杭州百事特电子有限公司 | Impulse waveform driver and electromagnetic buzzer |
| CN105689834A (en) * | 2016-02-29 | 2016-06-22 | 吕福军 | Integral assembly line tool structure for buzzers and application method thereof |
-
2012
- 2012-08-06 CN CN 201220384520 patent/CN202711681U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236843A (en) * | 2013-05-08 | 2013-08-07 | 杭州百事特电子有限公司 | Impulse waveform driver and electromagnetic buzzer |
| CN103236843B (en) * | 2013-05-08 | 2015-09-02 | 杭州百事特电子有限公司 | A kind of impulse waveform driver and electromagnetic buzzer |
| CN105689834A (en) * | 2016-02-29 | 2016-06-22 | 吕福军 | Integral assembly line tool structure for buzzers and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 523000 Guangdong province Dongguan wangniudunzhen Newton Hengli Village Industrial Park Patentee after: GUANGDONG SWT SMART TECHNOLOGY CO.,LTD. Address before: 523000 Guangdong province Dongguan wangniudunzhen Newton village Hengli Industrial Park building A Patentee before: DONGGUAN SWEETSOUND ELECTRONIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |