CN211252446U - Active noise reduction device - Google Patents
Active noise reduction device Download PDFInfo
- Publication number
- CN211252446U CN211252446U CN201922069637.7U CN201922069637U CN211252446U CN 211252446 U CN211252446 U CN 211252446U CN 201922069637 U CN201922069637 U CN 201922069637U CN 211252446 U CN211252446 U CN 211252446U
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- microphone
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- mounting
- connecting block
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Abstract
The utility model discloses a device of making an uproar falls in initiative, it includes the mounting panel, locates the electret microphone on the mounting panel, the electret microphone includes microphone body and microphone electric wire, the mounting panel is including being used for holding the first installation piece of microphone body, be used for fixing the second installation piece of microphone electric wire and connect in first installation piece with connecting block between the second installation piece. 1. The device is made of plastic materials, so that the additional mass of the tool is reduced; 2. the pin is fixed on the interior trim panel at the top of the carriage, so that the installation is convenient and flexible; 3. no glue solution, adhesive tape and other residues are left on the interior structure; 4. the worker is equipped with the recess of fixed connection wire and microphone, makes it not fragile, can guarantee that the fixed position of microphone is close to the regional of making an uproar that falls voluntarily, if: a seat headrest area.
Description
Technical Field
The utility model relates to a be used for initiatively falling device of making an uproar.
Background
In recent years, consumers are increasingly pursuing a quiet driving ride environment. The noise in the automobile is too large, which not only influences the riding comfort of the automobile and the satisfaction degree of users to automobile products, but also causes certain influence on the health of drivers and passengers. The strong noise can cause ear discomfort, temporary decline of hearing and reduction of hearing sensitivity, even can cause hearing damage, damage of hearing organs, acute trauma, rupture and bleeding of eardrum, and deafness of ears, which is medically known as 'noise deafness'. The human body can also cause the functional disorder of the nervous system, the digestive system and the endocrine system, the visual injury and the like after being repeatedly contacted with excessive noise for a long time.
Under the design trend of light weight of automobiles, low-frequency noise in the automobiles is difficult to obtain good noise reduction effect by a passive control method. A noise reduction method that utilizes the anti-noise signal to generate the cancelling interference with the original noise signal is called active noise control. Compared with the traditional passive noise reduction method using the sound absorption material, the method has the two remarkable advantages of 1) good noise reduction effect in a low frequency range and 2) small structural change on the noise-reduced object.
Active noise control technology can find a balance point in vehicle economy and comfort because it does not require the addition of high mass sound absorbing materials. In addition, with the continuous updating of automobile technology, the application of a small-displacement technical route and the development of novel energy vehicles bring new challenges to the NVH performance of automobiles, and active noise control can well meet the development requirements and support the development of new technologies of automobiles. The electret microphone has low precision, can completely meet the requirement of active noise reduction, and has small volume, light weight, low cost and convenient debugging and use. The use of such electret microphones is a necessary trend in the development of active noise reduction technology. However, the electret microphone is not easy to mount and fix and is easy to damage due to small mass and volume. The active noise reduction area is generally the peripheral area of each seat headrest of the automobile, the electret microphone should be close to the debugging area, and no special fixing device can ensure that the fixed position of the microphone is close to the seat headrest area at present.
Disclosure of Invention
The utility model aims at providing a be used for initiatively falling device of making an uproar.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a device of making an uproar falls in initiative, it includes the mounting panel, locates the electret microphone on the mounting panel, the electret microphone includes microphone body and microphone electric wire, the mounting panel is including being used for holding the first installation piece of microphone body, be used for fixing the second installation piece of microphone electric wire and connect in first installation piece with connecting block between the second installation piece.
Preferably, the connecting block is provided with two frame bodies which are formed by the first mounting block and the second mounting block, and a through accommodating hole is formed between the frame bodies.
Further, the first mounting block, the second mounting block and the connecting block are integrally formed through injection molding.
Preferably, fixing holes are uniformly distributed in the first mounting block and the connecting block, and the first mounting block, the second mounting block and the connecting block are fixedly connected with a to-be-detected piece through pins in the fixing holes.
Optimized, the connecting block the bottom surface of second installation piece with the bottom surface of first installation piece flushes, the top surface of second installation piece is higher than the top surface of first installation piece, the columniform mounting groove has been seted up on the bottom surface of first installation piece, set up the first groove of dodging towards the mounting groove extension on the bottom surface of second installation piece, just be equipped with the second on the first path of dodging the groove and extending to the mounting groove on the bottom surface of first installation piece and dodge the groove, the second dodges groove and accommodation hole and will first groove and the mounting groove intercommunication setting of dodging.
Optimized, seted up on one of them side of connecting block and prevented weighing down the slot, prevent weighing down the axis of slot with it is mutually perpendicular to first dodge the groove, and follow a side extends towards the side direction rather than paralleling, and passes at least first dodge the groove, prevent weighing down and be equipped with cylindric damping layer on the inside wall of the tank bottom of slot, prevent weighing down to be equipped with in the slot rather than the assorted and prevent weighing down the inserted bar, prevent that the tail end of weighing down the inserted bar passes first dodge the groove card and locate in the damping layer.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: 1. the device is made of plastic materials, so that the additional mass of the tool is reduced; 2. the pin is fixed on the interior trim panel at the top of the carriage, so that the installation is convenient and flexible; 3. no glue solution, adhesive tape and other residues are left on the interior structure; 4. the worker is equipped with the recess of fixed connection wire and microphone, makes it not fragile, can guarantee that the fixed position of microphone is close to the regional of making an uproar that falls voluntarily, if: a seat headrest area.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a rear view of the present invention;
fig. 4 is a bottom view of the present invention without an electret microphone mounted thereon;
FIG. 5 is a rear view of the present invention without an electret microphone;
FIG. 6 is a partial cross-sectional view of the present invention;
fig. 7 is an enlarged view of a in fig. 6.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
As shown in fig. 1 to 6, the active noise reduction device includes a mounting plate 1, an electret microphone 2 disposed on the mounting plate 1, the electret microphone 2 includes a microphone body 21 and a microphone wire 22, the mounting plate 1 includes a first mounting block 11 for accommodating the microphone body 21, a second mounting block 12 for fixing the microphone wire 22, and a connecting block 13 connected between the first mounting block 11 and the second mounting block 12.
The connecting block 13 has two housing bodies formed with the first mounting block 11 and the second mounting block 12, and a through housing hole 14 is formed between the housing bodies. The first and second mounting blocks 11 and 12 and the connecting block 13 are integrally formed by injection molding. Fixing holes 15 are uniformly distributed on the first mounting block 11 and the connecting block 13, and the first mounting block 11, the second mounting block 12 and the connecting block 13 are fixedly connected with a to-be-detected piece through pins 16 in the fixing holes 15.
Connecting block 13, the bottom surface of second installation piece 12 flushes with the bottom surface of first installation piece 11, the top surface of second installation piece 12 is higher than the top surface of first installation piece 11, set up the columniform mounting groove 17 that link up on the bottom surface of first installation piece 11, set up the first groove 18 of dodging towards the mounting groove 17 extension on the bottom surface of second installation piece 12, just be equipped with the second groove 19 of dodging on the first path of dodging groove 18 to the mounting groove 17 extension of dodging on the bottom surface of first installation piece 11, the second is dodged groove 19 and accommodation hole 14 and is set up the first groove 18 of dodging and mounting groove 17 intercommunication.
Install microphone body 21 in mounting groove 17, microphone electric wire 22 draws forth along second dodge groove 19, accommodation hole 14 and first dodge groove 18, can suitably reserve the surplus of a part of microphone cable 22 in accommodation hole 14, prevents to drag and leads to the microphone to damage.
As shown in fig. 6-7, in order to prevent the microphone cable 22 from running out of the first avoiding groove 18 during installation and affecting installation, the anti-falling slot 23 is provided on one side surface of the connecting block 13, the axis of the anti-falling slot 23 is perpendicular to the first avoiding groove 18, and extends from one side surface to the side direction parallel to the side surface, and passes through the first avoiding groove 18 at least, the cylindrical damping layer 24 is fixedly provided on the inner side wall of the bottom of the anti-falling slot 23, the anti-falling insertion rod 24 is provided in the anti-falling slot 23 and matched with the anti-falling insertion rod, and the tail end of the anti-falling insertion rod 24 passes through the first avoiding groove 18 and is clamped in the damping layer 25.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides a be used for initiatively falling device of making an uproar, it includes the mounting panel, locates the electret microphone on the mounting panel, the electret microphone includes microphone body and microphone electric wire, its characterized in that: the mounting panel is including being used for holding the first installation piece of microphone body, being used for fixing the second installation piece of microphone electric wire and connect in first installation piece with connecting block between the second installation piece.
2. The device for active noise reduction according to claim 1, characterized in that: the connecting block is provided with two frame bodies which are formed by the first mounting block and the second mounting block, and through accommodating holes are formed between the frame bodies.
3. The device for active noise reduction according to claim 2, characterized in that: the first mounting block, the second mounting block and the connecting block are integrally formed through injection molding.
4. The device for active noise reduction according to claim 1, characterized in that: fixing holes are uniformly distributed in the first mounting block and the connecting block, and the first mounting block, the second mounting block and the connecting block are fixedly connected with a to-be-detected piece through pins in the fixing holes.
5. The device for active noise reduction according to claim 1, characterized in that: the connecting block the bottom surface of second installation piece with the bottom surface of first installation piece flushes, the top surface of second installation piece is higher than the top surface of first installation piece, set up columniform mounting groove on the bottom surface of first installation piece, set up the first groove of dodging towards the mounting groove extension on the bottom surface of second installation piece, just be equipped with the second on the first path of dodging the groove and extending to the mounting groove on the bottom surface of first installation piece and dodge the groove, the second dodges groove and accommodation hole and will first groove and the mounting groove intercommunication setting of dodging.
6. The device for active noise reduction according to claim 5, characterized in that: the anti-falling slot is arranged on one side face of the connecting block, the axis of the anti-falling slot is perpendicular to the first avoiding slot, one side face extends towards the side direction parallel to the side face and at least penetrates through the first avoiding slot, a cylindrical damping layer is arranged on the inner side wall of the slot bottom of the anti-falling slot, an anti-falling inserted rod matched with the anti-falling inserted rod is arranged in the anti-falling slot, and the tail end of the anti-falling inserted rod penetrates through the first avoiding slot and is clamped in the damping layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922069637.7U CN211252446U (en) | 2019-11-26 | 2019-11-26 | Active noise reduction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922069637.7U CN211252446U (en) | 2019-11-26 | 2019-11-26 | Active noise reduction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211252446U true CN211252446U (en) | 2020-08-14 |
Family
ID=71984882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922069637.7U Active CN211252446U (en) | 2019-11-26 | 2019-11-26 | Active noise reduction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211252446U (en) |
-
2019
- 2019-11-26 CN CN201922069637.7U patent/CN211252446U/en active Active
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