CN208282932U - A kind of device for automobile exhaust noise testing - Google Patents
A kind of device for automobile exhaust noise testing Download PDFInfo
- Publication number
- CN208282932U CN208282932U CN201820958355.5U CN201820958355U CN208282932U CN 208282932 U CN208282932 U CN 208282932U CN 201820958355 U CN201820958355 U CN 201820958355U CN 208282932 U CN208282932 U CN 208282932U
- Authority
- CN
- China
- Prior art keywords
- pipe fitting
- fixing piece
- microphone
- exhaust noise
- automobile exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Exhaust Silencers (AREA)
Abstract
The utility model discloses a kind of device for automobile exhaust noise testing, including microphone, fixing piece and three rack legs, three rack legs were distributed around fixing piece outer wall one week；Three rack legs include the first pipe fitting and the second pipe fitting, and one end of first pipe fitting and fixing piece are hinged, and one end of the other end and the second pipe fitting is hinged；It is provided with connector on second pipe fitting, can be detachably connected with vehicle body by the connector；The fixing piece is circular ring structure, and oscillating bearing is provided in the inner hole of the fixing piece, and the microphone has certain length, and tail end protrudes into annulus inner hole and is connected with oscillating bearing.The utility model does not need quickly fixed using tool without damaging vehicle body, and can improve the working efficiency of test with the position of flexible modulation microphone.
Description
Technical field
The utility model relates to motor vehicle exhaust emission noise testing fields, more particularly to a kind of automobile exhaust noise that is used for survey
The device of examination.
Background technique
A large amount of universal with automobile, automobile is no longer the simple vehicles, people to the comfort of automobile it is also proposed that
Higher requirement.People are more prone to choose that those noises are smaller, automobile of ride comfort, and bigger for vibration noise
Automobile is kept someone at a respectful distance.This is but also automobile manufacturers ask auto NVH (Noise, Vibration, Harshness, NVH)
Topic puts into more energy.Wherein, exhaust noise is to influence N(Noise in auto NVH) one of important noise source.It is accurate to survey
Exhaust noise is tried, accurate assessment could be made to the exhaust noise of automobile, and then improve.Therefore, the accurate survey of exhaust noise
Examination is to improve the important prerequisite of exhaust noise.
Currently, the conventional method of test exhaust noise is to be fixed by the bracket microphone (mainly microphone) be vented
Near mouthful, distance and angle are set, then carries out static measurement or dynamic measures.Microphone whether fix in position and microphone
Adjust whether be conveniently directly related to measurement result accurate during the test.
In test practice, the inventors discovered that at least there are the following problems for existing test bracket: 1, existing bracket
It needs to punch on vehicle body during installation and be fixed, vehicle body can be damaged；Since bracket is fixed on vehicle body, it is mobile by
Limit, thus existing bracket there is also it is not flexible, the distance between microphone and exhaust outlet can not be adjusted by adjusting bracket
And the problem of angle.2, it in dynamic test, needs to convert different angles to test, at this moment just needs using specific purpose tool,
No small workload is brought to tester, reduces working efficiency.
Therefore, it is badly in need of designing a kind of device for automobile exhaust noise testing, to solve the above technical problems.
Utility model content
In view of the above shortcomings of the prior art, utility model aims to solve the installations of bracket in the prior art
It need to punch to damage vehicle body on vehicle body, mobile and adjusting bracket trouble is not easy to adjust measuring distance, angle etc. in real time,
And the problem of being operated using specific purpose tool, being made troubles to operator is needed, it provides a kind of for automobile exhaust noise
The device of test does not need quickly fixed using tool without damaging vehicle body, and can be with the position of flexible modulation microphone
It sets, improves the working efficiency of test.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is such that a kind of for automobile row
The device of gas noise testing, including microphone, fixing piece and three rack legs, three rack legs were around fixing piece outer wall one week
Distribution；Three rack legs include the first pipe fitting and the second pipe fitting, and one end of first pipe fitting and fixing piece are hinged, separately
One end and one end of the second pipe fitting are hinged；It is provided with connector on second pipe fitting, it can with vehicle body by the connector
Dismantling connection；The fixing piece is circular ring structure, and oscillating bearing is provided in the inner hole of the fixing piece, and the microphone has one
Measured length, tail end protrude into annulus inner hole and are connected with oscillating bearing.
The first pipe fitting is arranged, realizes fixing piece and exhaust outlet by adjusting the angle between the first pipe fitting and fixing piece
The adjustment of distance；Microphone is fixed in oscillating bearing, and the angle of microphone is adjusted by cradle head bearing, can satisfy survey
It is easy to operate to the requirement of microphone distance and angle in examination.Second pipe fitting of band connection part is set, bracket and vehicle may be implemented
The quick fixed and disassembly of body avoids punching damage vehicle body, it is completely beautiful to maintain vehicle body；It also eliminates and uses specific purpose tool
The trouble of removal bracket, it is more convenient to use, improve the working efficiency of operator.
As optimization, fluted, second pipe fitting and vehicle body phase is arranged in the side that second pipe fitting is connected with vehicle body
Side setting even is fluted, and the connector is the magnet of setting in the groove.It, can be with by magnet when vehicle body is smooth
Realize the quick fixed and disassembly of bracket and vehicle body.
As optimization, the magnet is flexible magnetic strips, and flexible magnets protrude from the groove.When vehicle body is out-of-flatness
When, the good fit of bracket and vehicle body may be implemented in the flexible magnetic strips of protrusion groove, to realize that bracket and the quick of vehicle body are consolidated
Fixed and disassembly.
As optimization, the connector is the sucker being connected with the second pipe fitting.When vehicle body is plastics, sucker may be implemented to prop up
The quick fixed and disassembly of frame and vehicle body.
As optimization, the axial width of the fixing piece is greater than the axial width of oscillating bearing, and oscillating bearing is close to solid
Determine one end of part；It is additionally provided with position limiting structure in the other end of fixing piece, the position of microphone is capable of fixing by position limiting structure.
Position limiting structure is set, the position of microphone can be fixed, be avoided it that the offset of angle occurs in testing, improve test number
According to accuracy.
As optimization, the position limiting structure includes several caging bolts around distribution in fixing piece one week, the caging bolt
Screw rod pass through the side wall of fixing piece after protrude into its inner hole, and be threadedly engaged and connect with fixing piece.Caging bolt, which passes through, to be fixed
It is protruded into after the side wall of part in its inner hole, caging bolt is in contact with microphone, can stablize fixed microphone, improves microphone and exists
Stability in test process prevents the position of microphone from shifting.Using caging bolt, operation side when operator uses
Just, working efficiency can be improved.
As optimization, it is connected between first pipe fitting and the second pipe fitting by clamping screw.Clamping screw is not only convenient for
The angle for adjusting the first pipe fitting and the second pipe fitting allows the second pipe fitting at any time to keep fitting closely with vehicle body, and is adjusting
The position of first pipe fitting and the second pipe fitting can be fixed after section is good, increase the stability of entire bracket.
As optimization, the fixing piece side wall is equipped with trunnion, and the first pipe fitting is connected by connecting bolt with the trunnion.Trunnion
Structure is simple, is easily worked in actual operation.
As optimization, the microphone uses microphone, and the tail portion of the microphone is inserted into oscillating bearing, and tight with oscillating bearing
Gu together.Microphone is easily obtained and facilitates installation, advantageously reduces entire testing cost.
Compared with prior art, the utility model has the advantages that
1, the first pipe fitting is set, realizes fixing piece and exhaust by adjusting the angle between the first pipe fitting and fixing piece
The adjustment of mouth distance；Oscillating bearing is set in fixing piece, and microphone is fixed in oscillating bearing, is adjusted by cradle head bearing
The angle of microphone can satisfy the requirement in test to microphone distance and angle, to be suitable for different test conditions
Or different vehicles, it is practical and easy to operate.
2, the second pipe fitting of band connection part is set, the quick fixed and disassembly of bracket and vehicle body may be implemented, avoid and beat
Vehicle body is damaged in hole, and it is completely beautiful to maintain vehicle body；The trouble using specific purpose tool removal bracket is also eliminated, use is more square
Just, the working efficiency of operator is improved.
Detailed description of the invention
Fig. 1 is a kind of usage state diagram of the device for automobile exhaust noise testing of the utility model；
Fig. 2 is a kind of structural schematic diagram of the device for automobile exhaust noise testing of the utility model；
Wherein: 1- microphone, 2- fixing piece, the first pipe fitting of 3-, the second pipe fitting of 4-, 5- oscillating bearing, 6- caging bolt.
Specific embodiment
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail.
Embodiment:
Referring to Fig. 1 and Fig. 2, a kind of device for automobile exhaust noise testing, including microphone 1, fixing piece 2 and three
Rack leg, three rack legs were distributed around 2 outer wall of fixing piece one week.
Three rack legs include the first pipe fitting 3 and the second pipe fitting 4；First pipe fitting 3 and the second pipe fitting 4 are
Hollow circular-tube made of metal material；One end of first pipe fitting 3 is hinged on fixing piece 2；When it is implemented, in fixing piece 2
Side wall is equipped with trunnion, and the first pipe fitting 3 is connected by connecting bolt with the trunnion.The other end of first pipe fitting 3 and the second pipe fitting 4
One end it is hinged.In the actual processing process, the second pipe fitting 4 has the part being overlapped with the first pipe fitting 3, and clamping screw passes through should
After intersection, the second pipe fitting 4 is connected with the first pipe fitting 3；In this way, by unscrewing or tightening clamping screw, it is adjustable or
Fix the angle between the first pipe fitting 3 and the second pipe fitting 4.Clamping screw is not only convenient for adjusting the first pipe fitting 3 and the second pipe fitting 4
Angle allows the second pipe fitting 4 to keep fitting closely with vehicle body at any time, and after regulating can be by 3 He of the first pipe fitting
The position of second pipe fitting 4 is fixed, and the stability of entire bracket is increased.
It is provided with connector on the second pipe fitting 4, can be detachably connected with vehicle body by the connector.As a kind of excellent
Mode is selected, connector is magnet；Groove is set close to the side of vehicle body in the second pipe fitting 4, groove is in bar shaped, length direction and the
The length direction of two pipe fittings 4 is consistent.The fixed magnet in groove can meet the fixation of the second pipe fitting 4 and smooth vehicle body.Due to vehicle
Body has graceful line style, and always not smooth, therefore, magnet can be flexible magnetic strips, which protrudes from described recessed
Slot.Flexible magnetic strips can guarantee the fixation of the second pipe fitting 4 and out-of-flatness vehicle body.As another preferred embodiment, need in testing
Support bracket fastened position is wanted not to be available magnet or magnetic stripe for plastics come when fixing, which be can also be and the second pipe fitting
4 connected suckers；Circumferential clasp can be used or sucker is fixed on the second pipe fitting 4 by annular buckle, by sucker by the
Two pipe fittings 4 are fixed with plastic body cover at this.In use, it can also use adhesive tape that the second pipe fitting and vehicle body are pasted onto one
It rises, so that moving back bracket connect more stable, the quick fixed and disassembly of realization bracket and vehicle body with vehicle body.
Three rack legs can be in different angles from fixing piece 2, adapt to not sympathizing with for vehicle body according to the needs of test
Condition, it is flexibly adjustable.When the angle between rack leg and fixing piece 2 is smaller, fixing piece 2 at a distance from automobile exhaust port compared with
Greatly, conversely, fixing piece 2 is smaller at a distance from automobile exhaust port when the angle between rack leg and fixing piece 2 is larger.Pass through
The angle of adjusting bracket leg and fixing piece 2 adjusts the distance between fixing piece 2 and exhaust outlet, can test same vehicle not
With the data in situation, the test request of different vehicles also can satisfy, and three rack legs form stable triangle, really
Protect the stability of entire bracket.
The fixing piece 2 is circular ring structure, is provided with oscillating bearing 5, the oscillating bearing 5 in the inner hole of the fixing piece 2
Including inner ring and outer ring.Wherein, it is interference fitted between the outer ring of oscillating bearing 5 and the inner hole of fixing piece 2.The microphone 1 has
There is certain length, tail end protrudes into annulus inner hole, and is connected with the inner ring of oscillating bearing 5.When it is implemented, the microphone
1 uses microphone, and the tail portion of the microphone is inserted into the inner ring of oscillating bearing 5, and is tightened together with the inner ring of oscillating bearing 5.Words
During installation, the front end of microphone is towards the direction of exhaust port for cylinder.
In actual processing, the axial width of the fixing piece 2 is greater than the axial width of oscillating bearing 5, and oscillating bearing 5 is close
One end of fixing piece 2 is provided with position limiting structure in the other end of fixing piece 2；The position limiting structure includes around fixing piece 2 one weeks points
Several caging bolts 6 of cloth, threaded hole is provided on the side wall of fixing piece 2, and the screw rod of the caging bolt 6 passes through 2 side of fixing piece
It is protruded into after threaded hole on wall in its inner hole, and is threadedly engaged and is connected with fixing piece 2.When it is implemented, usually setting three or
Four caging bolts 6, preferably to adjust and fix microphone 1.In use, microphone 1 is adjusted to the angle that test needs
Afterwards, it tightens caging bolt 6 to fix the position of microphone 1, caging bolt 6 can make 1 fixation of microphone, in testing not
The offset of angle can occur.
In the course of work: whole device being connected with vehicle body by three rack legs, and passes through clamping screw and connection spiral shell
Bolt is fixed by the first pipe fitting 3 and the second pipe fitting 4, then rotates microphone 1, the angle of microphone 1 and exhaust outlet is adjusted to survey
The angle of examination tightens caging bolt 6 to fix the angle of microphone 1, can carry out automobile exhaust noise testing.
After being completed, clamping screw and connection bolt are unclamped, the present apparatus is removed from vehicle body, and adjusts the first pipe fitting
The angle between angle and the second pipe fitting 4 and the first pipe fitting 3 between 3 and fixing piece 2 makes the first pipe fitting 3 be close to fixing piece
2, the length direction of the second pipe fitting 4 is consistent with the length direction of the first pipe fitting 3, in this way, volume is smaller after whole device is stored,
It is easily portable, it prepares for test next time.
Finally, it should be noted that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application technology
Scheme, those skilled in the art should understand that, those are modified to the technical solution of the utility model or are equal
Replacement, without departing from the objective and range of the technical program, should all cover in the scope of the claims of the utility model.
Claims (9)
1. a kind of device for automobile exhaust noise testing, it is characterised in that: including microphone (1), fixing piece (2) and three
Rack leg, three rack legs are distributed for outer wall one week around fixing piece (2)；
Three rack legs include the first pipe fitting (3) and the second pipe fitting (4), one end of first pipe fitting (3) and fixation
Hingedly, the other end and the one end of the second pipe fitting (4) are hinged for part (2)；It is provided with connector on second pipe fitting (4), by this
Connector can be detachably connected with vehicle body；
The fixing piece (2) is circular ring structure, is provided with oscillating bearing (5), the microphone in the inner hole of the fixing piece (2)
(1) there is certain length, tail end protrudes into annulus inner hole and is connected with oscillating bearing (5).
2. being used for the device of automobile exhaust noise testing as described in claim 1, it is characterised in that: second pipe fitting (4)
The side setting being connected with vehicle body is fluted, and the connector is the magnet of setting in the groove.
3. being used for the device of automobile exhaust noise testing as claimed in claim 2, it is characterised in that: the magnet is flexible magnetic
Item, and flexible magnets protrude from the groove.
4. being used for the device of automobile exhaust noise testing as described in claim 1, it is characterised in that: the connector is and the
The connected sucker of two pipe fittings (4).
5. the device according to claim 1-4 for automobile exhaust noise testing, it is characterised in that: described solid
The axial width for determining part (2) is greater than the axial width of oscillating bearing (5), and oscillating bearing (5) is close to the one end of fixing piece (2)；
It is additionally provided with position limiting structure in the other end of fixing piece (2), the position of microphone (1) is capable of fixing by position limiting structure.
6. being used for the device of automobile exhaust noise testing as claimed in claim 5, it is characterised in that: the position limiting structure includes
Around several caging bolts (6) of distribution in fixing piece one week, after the screw rod of the caging bolt (6) passes through the side wall of fixing piece (2)
It inserts into the inner in hole, and is threadedly engaged and connect with fixing piece (2).
7. being used for the device of automobile exhaust noise testing as described in claim 1, it is characterised in that: first pipe fitting (3)
And second be connected between pipe fitting (4) by clamping screw.
8. being used for the device of automobile exhaust noise testing as described in claim 1, it is characterised in that: fixing piece (2) side
Wall is equipped with trunnion, and the first pipe fitting (3) is connected by connecting bolt with the trunnion.
9. being used for the device of automobile exhaust noise testing as described in claim 1, it is characterised in that: the microphone (1) is adopted
Tail portion insertion oscillating bearing (5) with microphone, the microphone is interior, and tightens together with oscillating bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958355.5U CN208282932U (en) | 2018-06-21 | 2018-06-21 | A kind of device for automobile exhaust noise testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820958355.5U CN208282932U (en) | 2018-06-21 | 2018-06-21 | A kind of device for automobile exhaust noise testing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208282932U true CN208282932U (en) | 2018-12-25 |
Family
ID=64699257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820958355.5U Expired - Fee Related CN208282932U (en) | 2018-06-21 | 2018-06-21 | A kind of device for automobile exhaust noise testing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208282932U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461359A (en) * | 2020-12-17 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Mounting structure and noise testing device |
-
2018
- 2018-06-21 CN CN201820958355.5U patent/CN208282932U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461359A (en) * | 2020-12-17 | 2021-03-09 | 安徽江淮汽车集团股份有限公司 | Mounting structure and noise testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181225 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |