CN103090965A - Automotive upholstery vibration noise detection method and muting device - Google Patents
Automotive upholstery vibration noise detection method and muting device Download PDFInfo
- Publication number
- CN103090965A CN103090965A CN2013100152086A CN201310015208A CN103090965A CN 103090965 A CN103090965 A CN 103090965A CN 2013100152086 A CN2013100152086 A CN 2013100152086A CN 201310015208 A CN201310015208 A CN 201310015208A CN 103090965 A CN103090965 A CN 103090965A
- Authority
- CN
- China
- Prior art keywords
- automotive upholstery
- shaking table
- bottom board
- vibration
- connecting bottom
- 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.)
- Pending
Links
Images
Abstract
The invention discloses an automotive upholstery vibration noise detection method and a muting device. The automotive upholstery vibration noise detection method and the muting device comprise a vibration working table. Hole sites are formed in the vibration working table, and the vibration working table is provided with a muting box which is used for sound insulation. The muting box comprises a box body, a connecting hole is formed in the bottom of the box body, a connecting base plate is arranged on the connecting hole, and the connecting base plate is fixedly connected with the vibration working table through connecting guide pillars. A clamping device is arranged on the connecting base plate, the clamping device is fixedly connected with the connecting base plate through bolts, and the muting device is well installed and fixed. A testing part of automotive upholstery is fixed on the clamping device, a box door is closed, the vibration working table works, and noise of the testing part of the automotive upholstery is assessed. The detection method is simple, capable of shortening a development cycle of the whole car and improving product quality and good in muting effect.
Description
Technical field
The present invention relates to automotive upholstery vibrating noise detection technique field, relate in particular to a kind of automotive upholstery vibrating noise detection method and silencing apparatus.
Background technology
At present, Global Auto industry is flourish, except automobile appearance design fashion novelty, simultaneously the aesthetic property of car room, comfortableness etc. is also had higher requirement.And internal car noise directly arrives the comfortableness that affects the occupant, hearing loss degree, speech articulation and to the outer various sound equipment signal recognition capabilities of car.Therefore maximum possible reduces internal car noise raising environment inside car comfortableness and has become each large depot to the most important thing of complete vehicle quality requirement.Internal car noise mainly by engine noise, road make an uproar, wind is made an uproar, extrusion friction sound between the car inner assembly etc. forms.The evaluation of internal car noise in the past is to carry out when all completing in the car load exploitation, designs and develops uncontrollable and detection in earlier stage for the extrusion friction sound between the car inner assembly.
method and pick-up unit that patent publication No. has detected noise online for a kind of electronic product is provided in CN1427249A, comprising can be by the first paragraph silencing channel of electronic product, the quiet sensing chamber that communicates with the first paragraph silencing channel, the second segment silencing channel that is connected with quiet sensing chamber, electronic product moves along the first paragraph silencing channel of streamline setting, when electronic product moves to and the quiet sensing chamber that communicates with the first paragraph silencing channel, the electronic product that moves through is carried out noise measuring, continue to move to outlet along the second segment silencing channel that is connected with quiet sensing chamber through the electronic product that detects, detect and finish.
above-mentioned detection method is fit to small-sized streamline product, and electronic product needs power supply that duty is provided, on pick-up unit, the electronic product in its duty is carried out noise measuring, not being suitable for the friction that automotive trim produces in vibration detects, the friction noise that produces between automotive trim simultaneously is relevant with the rumble spectrum of vehicle, its rumble spectrum of different vehicles is different, in the streamline noise detection device of foregoing description, different rumble spectrums can't be provided, and when car load passes through the streamline pick-up unit, because inside gadget is arranged in car, can't accomplish accurate detection.
Now for better synchronous car load exploitation, the internal car noise car load exploitation schedule that affects not up to standard that minimizing causes because of the friction between the car inside gadget, therefore in the car inner assembly is designed and developed process, need isolated external environment noise, parts are carried out noise evaluation by vibration detection to the car inside gadget according to the rumble spectrum that vehicle requires, and the silencing apparatus when developing a suitable automotive upholstery noise measuring and vibrating noise detection method seem particularly important.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of automotive upholstery vibrating noise detection method and silencing apparatus are provided, and its detection method is simple, shortened the car load R﹠D cycle, improved product quality, its silencing apparatus is simple in structure, and muting function is good.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of silencing apparatus that detects the automotive upholstery vibrating noise, comprising:
Be positioned at the shaking table that is used for providing vibration force of bottom, described shaking table is offered porose position, be arranged on the silencing case that is used for sound insulation on described shaking table, described silencing case comprises casing, described bottom half is provided with connecting hole, and described connecting hole is provided with connecting bottom board, and described connecting bottom board is fixedly connected with described shaking table by connecting guide pillar, described connecting bottom board is provided with fixture, and described fixture is bolted connection on connecting bottom board.
As the optimization to casing, described casing comprises the sound insulation flaggy, described sound insulation flaggy is provided with the PP flaggy, be provided with EVA layer (one step foaming: Ethylene Vinyl Acetate) between described sound insulation flaggy and PP flaggy, described PP flaggy is provided with the acoustical cotton layer, and described acoustical cotton layer is provided with the cotton layer of crest.
As the further optimization to casing, the cotton layer of described crest is pasted with described acoustical cotton layer by double faced adhesive tape and is connected,
Further, described acoustical cotton layer is 2 layers, and described acoustical cotton layer is followed closely by rifle and is fixed on described PP flaggy.
As the detailed description to the connection guide pillar, described connection guide pillar is cylindric, described connection guide pillar one end is provided with galianconism, described galianconism is provided with external thread, described external thread is fixedly connected with described shaking table, the described connection guide pillar other end is provided with internal thread, described internal thread is connected with described connecting bottom board, described connection guide pillar passes described connecting hole described connecting bottom board and shaking table is fixedly connected with, and described external thread matches with position, hole and the connecting bottom board of described shaking table with the pore size of described internal thread.
As the optimization to silencing apparatus, structure and the fixture of described connecting bottom board are complementary, and the pore size of described connecting hole and described shaking table and described connecting bottom board are complementary.
Preferably, described silencing case also comprises chamber door, and described chamber door is arranged on described casing.
Accordingly, the present invention also provides a kind of automotive upholstery vibrating noise detection method, adopts above-mentioned described silencing apparatus, thereby it is carried out the evaluation that the automotive upholstery vibrating noise is completed in sound insulation.
A kind of automotive upholstery vibrating noise detection method provided by the invention comprises:
1), install and to fix silencing apparatus, the automotive upholstery test parts is fixed on fixture, closes chamber door;
2), shaking table vibration, evaluation automotive upholstery test parts noise.
Further, described step 1) is specially:
S10: silencing case is placed on shaking table, connects guide pillar and passes connecting hole, and an end connects connecting bottom board, and the other end connects shaking table, and connecting bottom board and shaking table are fixed together;
S11: fixture is placed on connecting bottom board, adopts bolt to fix;
S12: the automotive upholstery test parts is fixedly mounted on fixture, closes the silencing case chamber door.
Further, described step 2) be specially:
S20: to the rumble spectrum that vibration test machine input vehicle requires, shaking table connects vibration test machine, receives the frequency spectrum of requirement;
S21: the shaking table vibration, the automotive upholstery test parts of decibel instrument detection in silencing case fricative noise size in vibration processes is adopted in the vibration of driving automobile inside gadget test parts;
S22: to the noise data of decibel instrument detection and the personnel's of evaluation impression, judge whether the noise that produces in the automotive upholstery vibration meets main engine plants' requirement.
The present invention is by utilizing acoustical material, silencing case according to the making of vibration test equipment, need not to purchase specially parts noise evaluation equipment, the silencing apparatus of newly-increased isolated external environment noise on the basis of existing vibration table, to complete the noise evaluation of automotive interior part, the squelch of experiment demand is provided for the evaluation of automotive trim noise, utilize this silencing apparatus to carry out the detection method of automotive upholstery vibrating noise, its method is simple, silencing apparatus is simple in structure, can realize the squelch lower than 20dB under static state.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of silencing apparatus three-dimensional structure diagram that detects the automotive upholstery vibrating noise provided by the invention;
Fig. 2 is a kind of silencing apparatus silencing case stereographic map that detects the automotive upholstery vibrating noise provided by the invention;
Fig. 3 is a kind of silencing apparatus casing sectional view that detects the automotive upholstery vibrating noise provided by the invention;
Fig. 4 is that a kind of silencing apparatus that detects the automotive upholstery vibrating noise provided by the invention connects guide pillar structure figure;
Fig. 5 is a kind of silencing apparatus connecting bottom board structural drawing that detects the automotive upholstery vibrating noise provided by the invention;
Fig. 6 is a kind of automotive upholstery vibrating noise detection method overall flow figure provided by the invention;
Fig. 7 is a kind of automotive upholstery vibrating noise detection method step 1) process flow diagram provided by the invention;
Fig. 8 is a kind of automotive upholstery vibrating noise detection method step 2 provided by the invention) process flow diagram;
Embodiment
A kind of automotive upholstery vibrating noise detection method and silencing apparatus that the embodiment of the present invention provides, its detection method is simple, has shortened the car load R﹠D cycle, has improved product quality, and its silencing apparatus is simple in structure, and muting function is good.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
referring to Fig. 1 and in conjunction with Fig. 2, a kind of silencing apparatus that detects the automotive upholstery vibrating noise provided by the invention, comprise the shaking table 1 that is used for providing vibration force that is positioned at the bottom, described shaking table is offered porose position 2, be arranged on the silencing case 3 that is used for sound insulation on described shaking table, described silencing case 3 comprises casing 4 and chamber door 5, described chamber door 5 is arranged on described casing 4, described casing 4 bottoms are provided with connecting hole 6, described connecting hole 6 is provided with connecting bottom board 7, described connecting bottom board 7 is fixedly connected with described shaking table 1 by connecting guide pillar 8, described connecting bottom board 7 is provided with fixture 9, described fixture 9 is fastenedly connected on connecting bottom board 7 by bolt 10.
referring to Fig. 3, casing 4 of the present invention is made by acoustical material, described casing 4 comprises sound insulation flaggy 41, described sound insulation flaggy 41 is provided with PP flaggy 42, 42 of described sound insulation flaggy 41 and PP flaggies are provided with EVA layer 43, described PP flaggy 42 is provided with acoustical cotton layer 44, described acoustical cotton layer 44 is 2 layers, described acoustical cotton layer 44 is followed closely by rifle and is fixed on described PP flaggy 42, described acoustical cotton layer 44 is provided with the cotton layer 45 of crest, the cotton layer 45 of described crest is pasted with described acoustical cotton layer 44 by double faced adhesive tape 46 and is connected, described silencing case 3 is used for isolated external environment noise, the relative squelch that satisfies experimental state is provided.
referring to Fig. 4 and in conjunction with Fig. 5, as the detailed description to the connection guide pillar, described connection guide pillar 8 is cylindric, described connection guide pillar 8 one ends are provided with galianconism 81, described galianconism 81 is provided with external thread, described external thread is fixedly connected with described shaking table 1, described connection guide pillar 8 other ends are provided with internal thread 82, described internal thread 82 is connected with described connecting bottom board 7, described connection guide pillar 8 passes described connecting hole 6 described connecting bottom board 7 and shaking table 1 is fixedly connected with, described external thread matches with position, hole and the connecting bottom board 7 of described shaking table 1 with the pore size of described internal thread 82, in the silencing apparatus of detection automotive upholstery vibrating noise provided by the invention, described casing 4 can carry out respective design according to the vibration test back shop, the structure of described connecting bottom board 7 and described fixture 9 are complementary, the structure of described connecting hole 6 can adjust accordingly according to shaking table 1 and connecting bottom board 7 sizes and arrangement of boring holes, the structure of described connection guide pillar 8 is suitably adjusted according to position, shaking table hole 2 sizes and layout.
Referring to Fig. 6, the invention provides a kind of automotive upholstery vibrating noise detection method, adopt above-mentioned described silencing apparatus, thereby it is carried out the evaluation that the automotive upholstery vibrating noise is completed in sound insulation, comprising:
1), install and to fix silencing apparatus, the automotive upholstery test parts is fixed on fixture, closes chamber door;
2), shaking table vibration, evaluation automotive upholstery test parts noise.
Referring to Fig. 7, for concrete implementation step in step 1) is described in further detail, described step 1) is specially:
S10: silencing case is placed on shaking table, connects guide pillar and passes connecting hole, and an end connects connecting bottom board, and the other end connects shaking table, and connecting bottom board and shaking table are fixed together;
S11: fixture is placed on connecting bottom board, adopts bolt to fix;
S12: the automotive upholstery test parts is fixedly mounted on fixture, closes the silencing case chamber door.
Require each parts need to guarantee to be fastenedly connected in step 1), avoid affecting evaluation result because connection metal spare produces the abnormal sound that occurs that resonates in vibration experiment.
Referring to Fig. 8, for further describing step 2) concrete implementation step, described step 2) be specially:
S20: to the rumble spectrum that vibration test machine input vehicle requires, shaking table connects vibration test machine, receives the frequency spectrum of requirement;
S21: the shaking table vibration, the automotive upholstery test parts of decibel instrument detection in silencing case fricative noise size in vibration processes is adopted in the vibration of driving automobile inside gadget test parts;
S22: to the noise data of decibel instrument detection and the personnel's of evaluation impression, judge whether the noise that produces in the automotive upholstery vibration meets main engine plants' requirement.
After evaluation result, specification product continue with the car load exploitation, and substandard product is treated further modification, have therefore improved the car load development progress, have improved product quality.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. silencing apparatus that detects the automotive upholstery vibrating noise, comprise the shaking table that is used for providing vibration force that is positioned at the bottom, described shaking table is offered porose position, it is characterized in that, be arranged on the silencing case that is used for sound insulation on shaking table, described silencing case comprises casing, described bottom half is provided with connecting hole, described connecting hole is provided with connecting bottom board, described connecting bottom board is fixedly connected with described shaking table by connecting guide pillar, described connecting bottom board is provided with fixture, and described fixture is bolted connection on connecting bottom board.
2. a kind of silencing apparatus that detects the automotive upholstery vibrating noise according to claim 1, it is characterized in that, described casing comprises the sound insulation flaggy, described sound insulation flaggy is provided with the PP flaggy, be provided with the EVA layer between described sound insulation flaggy and PP flaggy, described PP flaggy is provided with the acoustical cotton layer, and described acoustical cotton layer is provided with the cotton layer of crest.
3. a kind of silencing apparatus that detects the automotive upholstery vibrating noise according to claim 2, is characterized in that, the cotton layer of described crest is pasted with described acoustical cotton layer by double faced adhesive tape and is connected.
4. a kind of silencing apparatus that detects the automotive upholstery vibrating noise according to claim 3, is characterized in that, described acoustical cotton layer is 2 layers, and described acoustical cotton layer is followed closely by rifle and is fixed on described PP flaggy.
5. a kind of silencing apparatus that detects the automotive upholstery vibrating noise according to claim 2, it is characterized in that, described connection guide pillar is cylindric, described connection guide pillar one end is provided with galianconism, described galianconism is provided with external thread, described external thread is fixedly connected with described shaking table, the described connection guide pillar other end is provided with internal thread, described internal thread is connected with described connecting bottom board, described connection guide pillar passes described connecting hole described connecting bottom board and shaking table is fixedly connected with, described external thread matches with position, hole and the connecting bottom board of described shaking table with the pore size of described internal thread.
6. a kind of silencing apparatus that detects the automotive upholstery vibrating noise according to claim 5, it is characterized in that, structure and the automotive upholstery of described connecting bottom board are complementary, and the pore size of described connecting hole and described shaking table and described connecting bottom board are complementary.
7. the described a kind of silencing apparatus that detects the automotive upholstery vibrating noise of according to claim 3-6 any one, is characterized in that, described silencing case also comprises chamber door, and described chamber door is arranged on described casing.
8. an automotive upholstery vibrating noise detection method, adopt silencing apparatus claimed in claim 1 to carry out the evaluation of sound insulation vibration test to it, it is characterized in that, comprises the following steps:
1), install and to fix silencing apparatus, the automotive upholstery test parts is fixed on fixture, closes chamber door;
2), shaking table vibration, evaluation automotive upholstery test parts noise.
9. a kind of automotive upholstery vibrating noise detection method according to claim 9, is characterized in that, described step 1) is specially:
S10: silencing case is placed on shaking table, connects guide pillar and passes connecting hole, and an end connects connecting bottom board, and the other end connects shaking table, and connecting bottom board and shaking table are fixed together;
S11: fixture is placed on connecting bottom board, adopts bolt to fix;
S12: the automotive upholstery test parts is fixedly mounted on fixture, closes the silencing case chamber door.
10. a kind of automotive upholstery vibrating noise detection method according to claim 10, is characterized in that described step 2) be specially:
S20: to the rumble spectrum that vibration test machine input vehicle requires, shaking table connects vibration test machine, receives the frequency spectrum of requirement;
S21: the shaking table vibration, the automotive upholstery test parts of decibel instrument detection in silencing case fricative noise size in vibration processes is adopted in the vibration of driving automobile inside gadget test parts;
S22: to the noise data of decibel instrument detection and the personnel's of evaluation impression, judge whether the noise that produces in the automotive upholstery vibration meets main engine plants' requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100152086A CN103090965A (en) | 2013-01-16 | 2013-01-16 | Automotive upholstery vibration noise detection method and muting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100152086A CN103090965A (en) | 2013-01-16 | 2013-01-16 | Automotive upholstery vibration noise detection method and muting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103090965A true CN103090965A (en) | 2013-05-08 |
Family
ID=48203818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100152086A Pending CN103090965A (en) | 2013-01-16 | 2013-01-16 | Automotive upholstery vibration noise detection method and muting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103090965A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723295A (en) * | 2015-04-02 | 2015-06-24 | 苏州勤美达精密机械有限公司 | Working platform for machining |
| CN106840696A (en) * | 2017-01-16 | 2017-06-13 | 同济大学 | A kind of determination method that body side wall cavity blocking block influences on internal car noise |
| CN107843334A (en) * | 2017-12-07 | 2018-03-27 | 广东省水利水电科学研究院 | The intelligent monitor system that a kind of soft base sluice plate comes to nothing |
| CN107941526A (en) * | 2017-12-18 | 2018-04-20 | 华南智能机器人创新研究院 | A kind of automobile instrument disc assembly abnormal sound detection device for assembly line |
| CN108989968A (en) * | 2018-09-30 | 2018-12-11 | 苏州美声电子有限公司 | A kind of sound equipment noise tester |
| CN109186750A (en) * | 2018-08-24 | 2019-01-11 | 重庆长安汽车股份有限公司 | A kind of inside gadget to vehicle every sound absorption harmony qualitative effects prediction technique |
| CN109655221A (en) * | 2019-01-17 | 2019-04-19 | 深圳市优瑞特检测技术有限公司 | A kind of vibration abnormal sound test method |
| CN113163316A (en) * | 2020-01-23 | 2021-07-23 | 上海擎动信息科技有限公司 | Sound vibration collecting equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597924A (en) * | 2008-06-03 | 2009-12-09 | Ls电线有限公司 | Foamed polystyrene component and have the abatvoix of this member |
| CN102004022A (en) * | 2010-11-29 | 2011-04-06 | 苏州苏试试验仪器有限公司 | Vibration and noise complex experiment equipment |
| CN102829815A (en) * | 2012-08-13 | 2012-12-19 | 苏州岸肯电子科技有限公司 | Vibrating table arranged in damping room |
| CN203037347U (en) * | 2013-01-16 | 2013-07-03 | 广州市中新塑料有限公司 | Silencing device used to detect vibration noises of automobile interior trim parts |
-
2013
- 2013-01-16 CN CN2013100152086A patent/CN103090965A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101597924A (en) * | 2008-06-03 | 2009-12-09 | Ls电线有限公司 | Foamed polystyrene component and have the abatvoix of this member |
| CN102004022A (en) * | 2010-11-29 | 2011-04-06 | 苏州苏试试验仪器有限公司 | Vibration and noise complex experiment equipment |
| CN102829815A (en) * | 2012-08-13 | 2012-12-19 | 苏州岸肯电子科技有限公司 | Vibrating table arranged in damping room |
| CN203037347U (en) * | 2013-01-16 | 2013-07-03 | 广州市中新塑料有限公司 | Silencing device used to detect vibration noises of automobile interior trim parts |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104723295A (en) * | 2015-04-02 | 2015-06-24 | 苏州勤美达精密机械有限公司 | Working platform for machining |
| CN104723295B (en) * | 2015-04-02 | 2017-05-10 | 苏州勤美达精密机械有限公司 | Working platform for machining |
| CN106840696A (en) * | 2017-01-16 | 2017-06-13 | 同济大学 | A kind of determination method that body side wall cavity blocking block influences on internal car noise |
| CN107843334A (en) * | 2017-12-07 | 2018-03-27 | 广东省水利水电科学研究院 | The intelligent monitor system that a kind of soft base sluice plate comes to nothing |
| CN107941526A (en) * | 2017-12-18 | 2018-04-20 | 华南智能机器人创新研究院 | A kind of automobile instrument disc assembly abnormal sound detection device for assembly line |
| CN107941526B (en) * | 2017-12-18 | 2023-11-17 | 华南智能机器人创新研究院 | Abnormal sound detection equipment for automobile instrument panel assembly of assembly line |
| CN109186750A (en) * | 2018-08-24 | 2019-01-11 | 重庆长安汽车股份有限公司 | A kind of inside gadget to vehicle every sound absorption harmony qualitative effects prediction technique |
| CN108989968A (en) * | 2018-09-30 | 2018-12-11 | 苏州美声电子有限公司 | A kind of sound equipment noise tester |
| CN109655221A (en) * | 2019-01-17 | 2019-04-19 | 深圳市优瑞特检测技术有限公司 | A kind of vibration abnormal sound test method |
| CN113163316A (en) * | 2020-01-23 | 2021-07-23 | 上海擎动信息科技有限公司 | Sound vibration collecting equipment |
| CN113163316B (en) * | 2020-01-23 | 2023-03-14 | 上海擎动信息科技有限公司 | Sound vibration collecting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103090965A (en) | Automotive upholstery vibration noise detection method and muting device | |
| CN103364202A (en) | Vehicle fault diagnosis method and system | |
| Shin et al. | Experimental characterization of instrument panel buzz, squeak, and rattle (BSR) in a vehicle | |
| CN110487560B (en) | Method for testing noise transmission path of interior trim car body | |
| CN106515627A (en) | Vehicle sound enhancement | |
| CN104908688A (en) | Method and device for active noise reduction of vehicle | |
| CN104062075A (en) | Finished automobile sound transmission loss testing method | |
| BRPI0717778A2 (en) | SELF-SUPPORTED CABIN INTERNAL STRUCTURE WITH INTEGRATED INSTALLATION ELEMENTS | |
| CN104266749A (en) | Device and method for offline detecting NVH (Noise Vibration and Harshness) of vehicle generator | |
| FR2866114B1 (en) | MOBILE TEST BENCH FOR TIRES, AND METHOD FOR IMPLEMENTING SUCH A TEST BENCH | |
| CN104267104A (en) | Method for detecting shock-absorption and noise-reduction performance of car damping material | |
| CN204788961U (en) | Air bag assists testing arrangement | |
| DE102014217500A1 (en) | Method and device for diagnosing conditions of a vehicle | |
| CN108844756A (en) | Detect the system and method for automobile fuel pump and fuel tank assembly operational shock and noise | |
| CN109612575A (en) | A kind of objective examination method of automobile wind noise | |
| CN104330269B (en) | Method for testing damping ratio of tyre-rim combination body | |
| CN203037347U (en) | Silencing device used to detect vibration noises of automobile interior trim parts | |
| CN206456306U (en) | A kind of remotely controlling vehicle mounted burglar alarm | |
| CN105181113A (en) | Portable vehicle-mounted site test device for road and tyre noise | |
| CN202716720U (en) | Automobile engine mounting device with adjustable rigidity | |
| US10141903B2 (en) | Methods and systems for controlling audio output of an exterior vehicle audio system | |
| CN205059289U (en) | Enclose assembly structure that is connected of panel beating before automotive interior instrument board and automobile body | |
| CN207095875U (en) | A kind of dynamic assembly suspension experimental rig and its lower clamp | |
| CN205449281U (en) | Car roll noise test device | |
| EP2048486A2 (en) | Roller test bench for vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130508 |