CN204915516U - On -vehicle microphone subassembly and car - Google Patents
On -vehicle microphone subassembly and car Download PDFInfo
- Publication number
- CN204915516U CN204915516U CN201520508206.5U CN201520508206U CN204915516U CN 204915516 U CN204915516 U CN 204915516U CN 201520508206 U CN201520508206 U CN 201520508206U CN 204915516 U CN204915516 U CN 204915516U
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- Prior art keywords
- microphone
- silica gel
- silicagel pad
- car
- microphone assembly
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Abstract
For on -vehicle microphone in overcoming prior art can't effectively restrain air force nature noise and mechanicalness noise in the car, the problem that leads to the speech communication quality to reduce, the utility model provides an on -vehicle microphone subassembly and car. On -vehicle microphone subassembly includes microphone, silica gel cover, silica gel pad, button cover and drive plate, the microphone cover is in in the silica gel cover, silica gel pad front end suit is in in the button cover silica gel pad front end with form installation space between the button cover, the cover has the microphone of silica gel cover is installed in the installation space, the button sheathe in be equipped with with the communicating miaow hole of installation space, the drive plate is installed silica gel pad rear end, the microphone with the drive plate electricity is connected. Install this the on -vehicle microphone subassembly on the car panel, can effectively reduce air force nature noise and the influence of mechanicalness noise to the microphone pronunciation in the driver's cabin, improvement microphone originating node's quality.
Description
Technical field
The utility model relates to automotive field, the car microphone assembly especially on automobile.
Background technology
Popularizing in recent years along with automobile, the fast development of vehicle mounted multimedia technology, increasing automotive plant and the supplier of parts and components start bluetooth module to put in in-vehicle communication system, to remove the trouble of answering a call that to catch when driver drives from, bluetooth module can also allow driver enjoy the happy of stereo music simultaneously.
In bluetooth module, microphone is the structure receiving sound, and the vibration of sound is passed on microphone diaphragm by it, promotes the electric current of the magnet formation and modification of the inside, and the electric current Sound Processor Unit delivered to below of change like this carries out amplification process.The acquisition of signal that this microphone can will cause arbitrarily microphone diaphragm to vibrate, but we need is only facing to microphone one's voice in speech, other all signals causing microphone diaphragm to vibrate all belong to noise.At indoor noise mainly air power noise and the solid mechanical noise on the impact of microphone voice communication quality of vehicle drive.Wherein, air power noise refers to that air flowing or object move in atmosphere and cause air to produce eddy current, impact or the noise that pressure jump causes air turbulence and formed.It is not a relatively airtight environment that the impact of air power noise on microphone is mainly reflected in microphone mounting structure periphery, during microphone voice communication, the driving indoor air flows that automobile room air-conditioning regulates, be partially formed air whirl at microphone mounting structure, affect the sound effect of microphone.Solid mechanical vibration noise is mainly produced by solid vibration, and the noise impact of microphone being mainly reflected in solid vibration generation is transmitted on microphone by specific solid dielectric.
In sum, the car microphone in conventional Bluetooth assembly effectively cannot suppress air power noise in car and mechanical noise, causes voice communication quality to reduce.
Utility model content
Effectively cannot suppress air power noise in car and mechanical noise for overcoming car microphone in prior art, cause the problem that voice communication quality reduces, the utility model provides a kind of car microphone assembly and automobile.
The utility model provides a kind of car microphone assembly on the one hand, comprises microphone, silica gel sheath, silicagel pad, button cover and drive plate;
Described microphone boot is in described silica gel sheath;
Described silicagel pad front end sleeve is contained in described button cover, between described silicagel pad front end and described button cover, form installing space; Cover has the microphone of described silica gel sheath to be arranged in described installing space; Described button puts the miaow hole being provided with and communicating with described installing space; The lateral wall of described button cover is provided with limit rib;
Described drive plate is arranged on described silicagel pad rear end, and described microphone is electrically connected with described drive plate.
Preferably, described silica gel sheath be have centre hole, both ends open columnar structured.
Preferably, described microphone is cylindrical, and it comprises cylindrical side, front end face and aft end face; Described aft end face draws wire;
Described microphone front face forms stage portion;
Described silica gel sheath front end is provided with step end face; Described microphone is contained in described centre hole, and the stage portion of described microphone front face to be inserted in the step end face on described silica gel sheath in centre hole.
Preferably, the front end of described silicagel pad is provided with circular inward recess, forms described installing space between described circular inward recess and described button cover.
Preferably, described silicagel pad is provided with the wire lead slot extending to rear end from front end; The wire that described microphone is drawn is electrically connected on described drive plate through described wire lead slot.
Preferably, the rear end of described button cover forms silicagel pad mounting groove, and the front end of described silicagel pad is arranged in described silicagel pad mounting groove.
Preferably, the front end of described silicagel pad is provided with protrusion; Grid is provided with in described silicagel pad mounting groove; Described protrusion and described mesh fitting, be inserted in described grid.
Preferably, the inwall of described silicagel pad mounting groove is provided with draw-in groove.
The utility model second aspect provides a kind of automobile, and wherein, the cab panel of described automobile is provided with microphone assembly mounting hole; Car microphone assembly is arranged in described microphone assembly mounting hole.
This car microphone assembly that the utility model provides and the automobile installing this car microphone assembly, by interference mode packaged microphone, the confined space of maximized formation microphone; Microphone is only communicated, to reduce its air power noise with the external world by miaow hole.Meanwhile, adopt the good silicagel pad of elasticity and silica gel sheath to seal this microphone, reduce vibration passing that other solids produce on the vibration shell fragment of microphone, to reduce device solid mechanical vibration noise as far as possible.So, this is arranged on this car microphone assembly in car panel, effectively can reduce air power noise and mechanical noise in operator's compartment and, on the impact of microphone voice, improve the quality of microphone voice call; The reliability that microphone is installed is high, assembling is simple; And parts cost of development is low, time-to-market is short.
Accompanying drawing explanation
Fig. 1 is the generalized section that the car microphone assembly provided in the utility model detailed description of the invention installs in the panel;
Fig. 2 is the car microphone assembly decomposing schematic representation provided in the utility model detailed description of the invention;
Fig. 3 is the microphone schematic perspective view provided in the utility model detailed description of the invention;
Fig. 4 is the silica gel sheath schematic perspective view provided in the utility model detailed description of the invention;
Fig. 5 is the first half-blank schematic perspective view provided in the utility model detailed description of the invention;
Fig. 6 is the silicagel pad schematic perspective view provided in the utility model detailed description of the invention;
Fig. 7 is the second half-blank schematic perspective view provided in the utility model detailed description of the invention;
Fig. 8, Fig. 9 are the button cover schematic perspective views provided in the utility model detailed description of the invention;
Figure 10 is the car microphone assembly schematic perspective view provided in the utility model detailed description of the invention;
Figure 11 is the panel schematic diagram provided in the utility model detailed description of the invention;
Figure 12 is that schematic diagram in the panel installed by the car microphone assembly provided in the utility model detailed description of the invention.
Wherein, 1, microphone; 2, silica gel sheath; 3, silicagel pad; 4, button cover; 5, drive plate; 6, panel; 100, car microphone assembly; 11, cylindrical side; 12, front end face; 13, wire; 14, stage portion; 21, external cylindrical surface; 22, centre hole; 23, inner cylinder face; 24, step end face; 25, anchor ring; 31, circular inward recess; 32, inner cylinder; 33, interior concave bottom surface; 34, wire lead slot; 35, protrusion; 40, inner bottom surface; 41, silicagel pad mounting groove; 42, draw-in groove; 43, limit rib; 44, miaow hole; 61, microphone assembly mounting hole; 62, card convex; 63, guide groove; A, the first half-blank; B, the second half-blank; C, the 3rd half-blank.
Detailed description of the invention
The technical matters solved to make the utility model, technical scheme and beneficial effect are clearly understood, below in conjunction with drawings and Examples, are further elaborated to the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment
This example carries out specific explanations explanation by disclosing a kind of preferred car microphone assembly to the utility model with the automobile being provided with this car microphone assembly, understands core concept of the present utility model to make it.
As shown in Figure 1, shown in Figure 11, the operator's compartment wainscot 6 of automobile is provided with microphone assembly mounting hole 61; Car microphone assembly is arranged in described microphone assembly mounting hole 61.
Wherein, as shown in Figure 1 and Figure 2, car microphone assembly 100 comprises microphone 1, silica gel sheath 2, silicagel pad 3, button cover 4 and drive plate 5;
Described microphone 1 is enclosed within described silica gel sheath 2;
Described silicagel pad 3 front end sleeve is contained in described button cover 4, between described silicagel pad 3 front end and described button cover 4, form installing space; Cover has the microphone 1 in described silica gel sheath 2 to be arranged in described installing space; Described button cover 4 is provided with 3 apertures shown in miaow hole 44(Fig. 9, Figure 10 and Figure 12 communicated with described installing space);
Described drive plate 5 is arranged on described silicagel pad 3 rear end, and described microphone 1 is electrically connected with described drive plate 5.
Specifically describe the structure of each parts and the installation process of car microphone assembly 100 below.
Concrete, as shown in Figure 3, described microphone 1 is cylindrical, and it comprises cylindrical side 11, front end face 12 and aft end face (unmarked); Aft end face is provided with two electrodes, and described aft end face draws wire 13;
Described microphone 1 front end forms stage portion 14.
Microphone 1 in this example adopts electret microphone, and it comprises metal shell and the acoustic-electric converting unit be arranged in metal shell and impedance transformation unit.The key element of acoustic-electric converting unit is vibration shell fragment (or claiming vibrating diaphragm).Vibration shell fragment is the very thin plastic film of a slice, the last layer of one side evaporation wherein proof gold film (be called and steam golden face).And then after high voltage electric field electret, two sides has the charges of different polarity stationed respectively.The steaming gold of vibration shell fragment, towards outward, is connected with metal case.Keep apart with thin insulation lining ring between the another side of diaphragm and metal polar plate.Like this, steam between golden film and metal polar plate and just form an electric capacity.When vibrating shell fragment and running into acoustic vibration, cause the electric field at electric capacity two ends to change, thus create with sound wave change and the alternating voltage of change.The concrete structure of this microphone 1 is public domain, is only briefly described herein, repeats no more.
Particularly, as shown in Figure 4, described silica gel sheath 2 for have centre hole 22, both ends open columnar structured.The outside face of its cylindrical shell is the face of cylinder, is called external cylindrical surface 21; Centre hole 22 inside face is called inner cylinder face 23; Described silica gel sheath 2 front opening place is provided with step end face 24; The end face of the annular arrangement of its rear end opening part is called anchor ring 25.This silica gel sheath 2 is not particularly limited, as long as it possesses good insulating power, flexibility, elasticity, contractibility, good seal performance, has attenuation to the mechanical noise of solid conduction, can not produce magnetic field, does not affect the audio of microphone 1.Common flexible glue can be selected, full name: Thermoplasticpolyurethanes as English in TPU(, Chinese full name is TPUE rubber) or EPDM(Chinese full name: ethylene propylene diene rubber, English full name: EthylenePropyleneDieneMonomer) etc.; TPU is selected in such as this example.Its durometer level is wide, mechanical strength is high, good processability, and modulus of elasticity is at 10 ~ 1000MPa, and therefore its rigid phase is a good.In addition, pulling strengrth is high, and percentage elongation is large, and the low grade of long compressive permanent set is all the remarkable characteristic of TPU.
As shown in Figure 5, described microphone 1 is contained in described centre hole 22, and the stage portion 14 of described microphone 1 front end to be inserted in the step end face 24 on described silica gel sheath 2 in centre hole 22.Particularly, microphone 1 front end face 12 is inserted in centre hole 22 from silica gel sheath 2 open rearward end, the line of centers of microphone 1 and the line of centers of silica gel sheath 2 are overlapped; Inner cylinder face 23 in the cylindrical side 11 of microphone 1 and silica gel sheath 2 coordinates, and when the stage portion 14 of its microphone 1 front end to be inserted in the step end face 24 on silica gel sheath 2 in centre hole 22, the stage portion 14 of its microphone 1 front end ensures that fitting process is not separated.Because microphone 1 shell is harder betal can, with flexibility good silica gel sheath 2 interference fit, amount of interference reaches 0.3mm, and the dimension limit of silica gel sheath 2 is only ± 0.08mm, the tolerance of microphone 1 is then less, so just can fill up the gap because Mismachining tolerance produces, be closed in silica gel sheath 2 by whole microphone 1, and provide oscillation space for microphone 1 vibrates shell fragment, well sealing microphone 1.For convenience of describing, in this example, the microphone 1 of described silica gel sheath 2 is had to be called the first half-blank a in cover.Adopt this silica gel sheath 2 to wrap up the front end of microphone 1, microphone 1 to be contacted with automobile cab panel 6 elastic sealing by this silica gel sheath 2 and installs, the isolated wind produced by gap is made an uproar.
As shown in Figure 6, the front end of described silicagel pad 3 is provided with circular inward recess 31, forms described installing space between described circular inward recess 31 and described button cover 4.Wherein, this circular inward recess 31 comprises interior concave bottom surface 33 and inner cylinder 32.Meanwhile, described silicagel pad 3 is provided with the wire lead slot 34 extending to rear end from front end; The wire 13 that described microphone 1 is drawn is electrically connected on described drive plate 5 through described wire lead slot 34.Wherein silicagel pad 3 material is not particularly limited, as long as it possesses good insulating power, flexibility, elasticity, contractibility, good seal performance, has attenuation to the mechanical noise of solid conduction, can not produce magnetic field, does not affect the audio of microphone 1.Common flexible glue can be selected equally, as TPU or EPDM etc.; Preferably EPDM is used in this example.Its its proportion in all rubber is the lightest, and have resistance to polar solvent and chemical substance, water absorption rate is low, has good insulation characterisitic.Can not magnetic field be produced when such material behavior guarantees that it contacts with drive plate 5, affect the audio of microphone 1.Nonpolarity substituent in EPDM material molecule structure, molecule inner injection can be low, and strand can keep compliance in relative broad range, and can keep at low temperatures, the requirement worked under meeting automobile harsh environment.
As shown in Figure 7, the first half-blank a shown in Fig. 5 is inserted in the circular inward recess 31 of described silicagel pad 3, during insertion, this first half-blank a is drawn an insertion of wire, the line of centers of silica gel sheath 2 overlaps with the line of centers of this circular inward recess 31, guarantees that installation site is not eccentric.After insertion, the external cylindrical surface 21 of silica gel sheath 2 and inner cylinder 32 interference fit of circular inward recess 31, the aft end face of this microphone 1 and the anchor ring 25 of silica gel sheath support concave bottom surface 33 in this center of circle inward recess; Utilize silicagel pad 3 effectively to wrap the first half-blank a, make assembly clearance be zero.So, the second half-blank b is obtained.The amount of interference that this silicagel pad 3 and the first half-blank a assemble is 0.2mm, because EPDM material has good contractibility, assembling is realized, and gap is very little, ensures the closed environment that microphone 1 shakes.Silicagel pad 3 and silica gel sheath 2 pairs of microphones 1 carry out once sealing (providing internal layer encapsulated space), and vibration microphone 1 vibrating shell fragment is in a relatively airtight space.The wire 13 of microphone 1 is drawn through the wire lead slot 34 of silicagel pad 3, and is welded on above drive plate 5, and centre can not contact with any metal device, also would not produce magnetic and interfere.This silicagel pad 3 and silica gel sheath 2 have attenuation to the mechanical noise by solid conduction simultaneously, and the medium preferably selecting TPU and EPDM material that mechanical noise is propagated well is improved.
As shown in Figure 8, Figure 9, the rear end of described button cover 4 forms silicagel pad mounting groove 41, and the front end of described silicagel pad 3 is arranged in described silicagel pad mounting groove 41.The lateral wall of described button cover 4 is provided with limit rib 43; The inwall of described silicagel pad mounting groove 41 is provided with draw-in groove 42.Meanwhile, as shown in Figure 6, the front end of described silicagel pad 3 is provided with protrusion 35; Grid (unmarked in figure) is provided with in described silicagel pad mounting groove 41; Described protrusion 35 and described mesh fitting, be inserted in described grid.
The second half-blank b interference shown in Fig. 7 is arranged in silicagel pad mounting groove 41, the upper surface of silicagel pad 3 front end protrusion part 35 is supported on the inner bottom surface 40 of silicagel pad mounting groove 41, above-mentioned circular inward recess 31 is arranged on this protrusion 35, the first half-blank a in this center of circle inward recess is closed between the inner bottom surface 40 of silicagel pad 3 and button cover 4, is 3 apertures shown in the 44(figure of miaow hole) be namely arranged on the inner bottom surface 40 relative with microphone 1 in this first half-blank a; To ensure that microphone 1 area voice communication function is not blocked, can be spread out by 3 miaow holes 44 on above-mentioned button cover 4.Film is pulled out in silicagel pad 3 outside, and pulling out film angle is 1.2 °, and the internal clearance of assembling is 0.4mm, and there is a little interference outside, utilize the elasticity of EPDM material silicagel pad 3 is inserted button cover 4 in silicagel pad mounting groove 41, be easy to realize.Simultaneously at the notch place of silicagel pad mounting groove 41, utilize the elasticity of silicagel pad 3 by constructive interference secondary seal microphone 1, ensure its closed environment vibrated.Namely it obtain the 3rd half-blank c as shown in Figure 10 after having assembled.
On automobile, operator's compartment wainscot 6 as shown in figure 11, and this panel 6 is provided with microphone assembly mounting hole 61; During installation, above-mentioned 3rd half-blank c is inserted in described microphone assembly mounting hole 61, then drive plate 5 is compressed silicagel pad 3, use screw lock, above-mentioned car microphone assembly 100 is fixedly encapsulated in this microphone assembly mounting hole 61; Corresponding above-mentioned button overlaps the limit rib 43 on 4 lateral walls, and this panel 6 arranges guide groove 63; So, this limit rib 43 can slide in this guide groove 63, and with by the 3rd this microphone assembly mounting hole 61 of half-blank c boatload, its assembly clearance is 0.1mm, makes the 3rd half-blank c can not parallel motion.Meanwhile, the draw-in groove 42 on corresponding described silicagel pad mounting groove 41 inwall, in this microphone assembly mounting hole 61, correspondence is provided with card convex 62, and card convex 62 realizes buckle with draw-in groove 42 and is connected, and the 3rd half-blank c can not be moved up and down, be fixed on this panel 6.Use this drive plate 5 to compress and lock screw in this example, finally make whole microphone 1 periphery form a complete airtight assembly environment (providing outer envelope space), make microphone 1 function of voice communication realize obtaining increased quality.
This car microphone assembly 100 that the utility model provides and the automobile installing this car microphone assembly 100, by interference mode packaged microphone 1, the confined space of maximized formation microphone 1; Microphone 1 is only communicated, to reduce its air power noise with the external world by miaow hole 44.Meanwhile, adopt the good silicagel pad 3 of elasticity and silica gel sheath 2 to seal this microphone 1, reduce vibration passing that other solids produce on the vibration shell fragment of microphone 1, to reduce device solid mechanical vibration noise as far as possible.So, this is arranged on this car microphone assembly 100 in car panel 6, effectively can reduce air power noise and mechanical noise in operator's compartment and, on the impact of microphone 1 voice, improve the quality of microphone 1 voice call; The reliability that microphone 1 is installed is high, assembling is simple; And parts cost of development is low, time-to-market is short.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a car microphone assembly, is characterized in that, comprises microphone, silica gel sheath, silicagel pad, button cover and drive plate;
Described microphone boot is in described silica gel sheath;
Described silicagel pad front end sleeve is contained in described button cover, between described silicagel pad front end and described button cover, form installing space; Cover has the microphone of described silica gel sheath to be arranged in described installing space; Described button puts the miaow hole being provided with and communicating with described installing space; The lateral wall of described button cover is provided with limit rib;
Described drive plate is arranged on described silicagel pad rear end, and described microphone is electrically connected with described drive plate.
2. car microphone assembly according to claim 1, is characterized in that, described silica gel sheath be have centre hole, both ends open columnar structured.
3. car microphone assembly according to claim 2, is characterized in that, described microphone is cylindrical, and it comprises cylindrical side, front end face and aft end face; Described aft end face draws wire;
Described microphone front face forms stage portion;
Described silica gel sheath front end is provided with step end face; Described microphone is contained in described centre hole, and the stage portion of described microphone front face to be inserted in the step end face on described silica gel sheath in centre hole.
4. car microphone assembly according to claim 3, is characterized in that, the front end of described silicagel pad is provided with circular inward recess, forms described installing space between described circular inward recess and described button cover.
5. car microphone assembly according to claim 4, is characterized in that, described silicagel pad is provided with the wire lead slot extending to rear end from front end; The wire that described microphone is drawn is electrically connected on described drive plate through described wire lead slot.
6. according to the car microphone assembly in claim 1-5 described in any one, it is characterized in that, the rear end of described button cover forms silicagel pad mounting groove, and the front end of described silicagel pad is arranged in described silicagel pad mounting groove.
7. car microphone assembly according to claim 6, is characterized in that, the front end of described silicagel pad is provided with protrusion; Grid is provided with in described silicagel pad mounting groove; Described protrusion and described mesh fitting, be inserted in described grid.
8. car microphone assembly according to claim 7, is characterized in that, the inwall of described silicagel pad mounting groove is provided with draw-in groove.
9. an automobile, is characterized in that, the cab panel of described automobile is provided with microphone assembly mounting hole; Car microphone assembly in claim 1-8 described in any one is arranged in described microphone assembly mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520508206.5U CN204915516U (en) | 2015-07-14 | 2015-07-14 | On -vehicle microphone subassembly and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520508206.5U CN204915516U (en) | 2015-07-14 | 2015-07-14 | On -vehicle microphone subassembly and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204915516U true CN204915516U (en) | 2015-12-30 |
Family
ID=54964678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520508206.5U Expired - Fee Related CN204915516U (en) | 2015-07-14 | 2015-07-14 | On -vehicle microphone subassembly and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204915516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020159527A1 (en) * | 2019-02-01 | 2020-08-06 | Hewlett-Packard Development Company, L.P. | Microphone boots for electronic devices |
-
2015
- 2015-07-14 CN CN201520508206.5U patent/CN204915516U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020159527A1 (en) * | 2019-02-01 | 2020-08-06 | Hewlett-Packard Development Company, L.P. | Microphone boots for electronic devices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20210714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |