CN112537263B - Automobile with noise reduction and sound receiving device - Google Patents
Automobile with noise reduction and sound receiving device Download PDFInfo
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- CN112537263B CN112537263B CN202011200699.8A CN202011200699A CN112537263B CN 112537263 B CN112537263 B CN 112537263B CN 202011200699 A CN202011200699 A CN 202011200699A CN 112537263 B CN112537263 B CN 112537263B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/08—Insulating elements, e.g. for sound insulation
- B60R13/0861—Insulating elements, e.g. for sound insulation for covering undersurfaces of vehicles, e.g. wheel houses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention discloses an automobile with a noise reduction and sound collection device, which comprises an automobile body, a vibration reduction structure and the noise reduction and sound collection device, wherein the automobile body comprises an automobile frame and an axle, and the automobile frame is arranged on the axle; the vibration damping structure comprises an elastic connecting piece, one end of the elastic connecting piece is connected with the frame, and the other end of the elastic connecting piece is connected with the axle; the noise reduction and sound collection device comprises a noise reduction layer and a sound collection layer, wherein the sound collection layer is laid on the frame, and the noise reduction layer is stacked on the sound collection layer. The frame is provided with the sound receiving layer and the noise reduction layer, so that the frame has the functions of absorbing noise, absorbing sound energy, reducing noise, eliminating echo and reducing transmitted sound energy, thereby playing the roles of sound absorption and sound insulation; in addition, the vibration reduction structure is also beneficial to reducing noise generated by automobile vibration.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile with a noise reduction and sound receiving device.
Background
The noise in the vehicle mainly comprises the noise of mechanical components such as an engine (engine noise), the friction sound between tires and the ground (road noise), the collision and friction sound (wind noise) generated when the vehicle breaks through an air curtain, the sound (such as the sound caused by the whistle of a large-cargo container car) transmitted into the vehicle from the external environment, the internal noise generated by the vibration of parts such as decorative plates in a cab and the like, and the noise in the vehicle mainly comprises low-frequency noise (250 hz-500 hz), has strong penetrability and is also a part which is difficult to process in the acoustic sound insulation technology.
Investigations have shown that motor vehicle noise accounts for 85.5% of urban traffic noise. The propagation of vehicle noise is closely related to the size of the road and the traffic measurement. In cities with narrow passages and high-rise buildings at two sides, noise is reflected back and forth, and the cities are noisy. The same noise source sounds 5-10 db louder on the open ground on the street. In motor vehicles, the noise of heavy vehicles such as trucks and buses is 89-92 decibels, while the noise of light vehicles such as cars and jeep is about 82-85 decibels. The speed of the automobile and the noise are also in a large relation, the faster the speed of the automobile is, the larger the noise is, the speed of the automobile is improved by 1 time, and the noise is increased by 6-10 decibels.
Disclosure of Invention
The invention mainly aims to provide an automobile with a noise reduction and sound receiving device, and aims to solve the technical problem that the noise of the automobile is too large in the prior art.
In order to achieve the above object, the present invention provides an automobile having a noise reduction and sound reception device, comprising:
the vehicle body comprises a vehicle frame and an axle, wherein the vehicle frame is arranged on the axle;
the vibration damping structure comprises an elastic connecting piece, one end of the elastic connecting piece is connected with the frame, and the other end of the elastic connecting piece is connected with the axle; and the number of the first and second groups,
the noise reduction and sound collection device comprises a noise reduction layer and a sound collection layer, wherein the sound collection layer is laid on the frame, and the noise reduction layer is stacked on the sound collection layer.
Optionally, the vibration damping structure further comprises a main body, a channel penetrating through the main body is formed inside the main body, and the elastic connecting piece is inserted into the channel;
and a plurality of through sound receiving holes are formed in the side wall of the channel and are used for absorbing noise generated by the elastic connecting piece.
Optionally, one end of the sound absorbing hole far away from the central axis of the main body is columnar, and the other end of the sound absorbing hole close to the central axis of the main body is spherical.
Optionally, sound absorbing cotton is paved on the peripheral side wall of the main body.
Optionally, the sound absorbing layer is made of a polyester fiber material.
Optionally, the noise reduction and sound collection device further includes a buffer layer, and the buffer layer is stacked on the noise reduction layer.
Optionally, the buffer layer is made of a polyethylene foam material.
Optionally, the noise reduction and sound absorption device further comprises a sound insulation layer, and the sound insulation layer is stacked on the buffer layer.
Optionally, the sound insulation layer is made of a wave crest sound absorption sponge material.
In the technical scheme provided by the invention, the frame is provided with the sound absorbing layer and the noise reduction layer, so that the frame has the functions of absorbing noise, absorbing sound energy, reducing noise performance, eliminating echo and reducing transmitted sound energy, thereby playing the roles of sound absorption and sound insulation; in addition, the vibration reduction structure is also beneficial to reducing noise generated by vibration of the automobile.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a vibration damping structure in an embodiment of an automobile with a noise reduction and sound collection device according to the present invention;
fig. 2 is a schematic structural diagram of the noise reduction and sound collection apparatus in fig. 1.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 100 | |
200 | Noise reduction and |
| 101 | Wheel of |
201 | Section of |
| 102 | |
202 | |
| 103 | First connecting |
203 | Sound-absorbing |
| 104 | |
204 | Connecting |
| 105 | |
205 | |
| 106 | |
206 | |
| 107 | Second connecting |
||
| 108 | |
||
| 109 | |
||
| 110 | Spring |
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that, if the present embodiment relates to a directional indication, the directional indication is only used to explain a relative positional relationship, a motion situation, and the like between components in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. Moreover, the technical solutions in the embodiments can be combined with each other, but must be based on the realization of the technical solutions by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not be within the protection scope of the present invention.
The noise in the vehicle mainly comprises the noise of mechanical components such as an engine (engine noise), the friction sound between a tire and the ground (road noise), the collision and friction sound generated by breaking an air curtain by the vehicle (wind noise), the sound transmitted into the vehicle by an external environment (such as the sound caused by the whistle of a large-container vehicle), the internal noise generated by the vibration of parts such as a decorative plate in a cab and the like, and the noise in the vehicle mainly comprises low-frequency noise (250 hz-500 hz), has strong penetrability and is also a part which is difficult to process in an acoustic sound insulation technology.
Investigations have shown that motor vehicle noise accounts for 85.5% of urban traffic noise. The propagation of vehicle noise is closely related to the size of the road and the traffic measurement. In cities with narrow passages and high-rise buildings at two sides, noise is reflected back and forth, and the cities are noisy. The same noise source sounds 5-10 db louder on the open ground on the street. In motor vehicles, the noise of heavy vehicles such as trucks and buses is 89-92 decibels, while the noise of light vehicles such as cars and jeep is about 82-85 decibels. The speed of the automobile and the noise are in a large relation, the faster the speed of the automobile is, the larger the noise is, the speed of the automobile is improved by 1 time, and the noise is increased by 6-10 decibels.
In view of this, the present invention provides an automobile with a noise reduction and sound collection device, which aims to solve the technical problem of too much noise of the automobile in the prior art. Referring to fig. 1 to 2, an embodiment of an automobile with a noise reduction and sound collection device according to the present invention is shown.
The present embodiment provides an automobile with a noise reduction and sound collection device 200, which includes:
the vehicle comprises a vehicle body and an axle 102, wherein the vehicle body is arranged on the axle 102;
a vibration damping structure 100 including an elastic connection member, one end of the elastic connection member being connected to the frame, and the other end being connected to the axle 102; and the number of the first and second groups,
the noise reduction and sound collection device 200 comprises a noise reduction layer 205 and a sound collection layer 203, wherein the sound collection layer 203 is laid on the vehicle frame, and the noise reduction layer 205 is stacked on the sound collection layer 203.
In the technical scheme provided by the invention, the sound-absorbing layer 203 and the noise-reducing layer 205 are arranged on the frame, so that the noise-absorbing frame has the effects of absorbing noise, absorbing sound energy, reducing noise performance, eliminating echo and reducing transmitted sound wave energy, thereby playing the roles of sound absorption and sound insulation. In addition, the vibration damping structure 100 is also advantageous for reducing noise generated by vibration of the vehicle.
Further, in the present embodiment, the damping structure 100 further includes a main body 104, a channel 105 penetrating the main body 104 is formed inside the main body 104, and the elastic connecting member is inserted into the channel 105;
a plurality of sound absorbing holes are formed through the side wall of the channel 105 to absorb noise generated by the elastic connection member.
The bottom of the frame is provided with an axle 102, wheels 101 are arranged at two ends of the axle 102, and the axle 102 and the frame are connected together through a buffer column 108. The damping structure 100 comprises a main body 104, a channel 105 penetrating through the main body 104 is formed in the main body 104, the elastic connector comprises a spring 110 and two movable studs 106, the spring 110 is arranged in the channel 105, the movable studs 106 are inserted into two ends of the spring 110, fastening blocks 109 are mounted at two ends of the main body 104, and the position of the movable studs 106 is stabilized through the fastening blocks 109. One end of one of the movable column heads 106 is connected with the vehicle frame through a first connecting block 103, and one end of the other movable column head 106 is connected with a buffer column 108 through a second connecting block 107. Damping structure 100 is all installed around buffer column 108, and four damping structure 100 make car overall structure more stable, and the shock attenuation is effectual. The buffer column 108 is made of hydrogenated nitrile rubber, and the materials used by the buffer column 108 ensure that the buffer column has the advantages of good processing performance, high strength, excellent wear resistance, small permanent deformation and unique ozone resistance and hydrogen sulfide resistance.
Further, in this embodiment, the sound-absorbing hole is cylindrical at the end away from the central axis of the main body 104 and spherical at the end close to the central axis of the main body 104. During the running of the automobile, the automobile vibrates, and the elastic connecting piece generates squeak sound. Therefore, how to perform noise reduction processing on the part of the sound is also important. The end near the central axis of the main body 104 is closer to the elastic connecting piece, so that the sound absorbing hole of the part has larger cross section and is designed to be spherical; the far away part is designed into a column shape to conduct the noise out.
Further, in the present embodiment, a sound absorbing sponge is disposed on the peripheral side wall of the main body 104 to absorb the noise transmitted from the end of the sound absorbing hole.
Further, in this embodiment, the sound absorbing layer 203 is made of a polyester fiber material. The material used by the sound-absorbing layer 203 has the functions of absorbing noise, absorbing sound energy, reducing noise, eliminating echo, and has the characteristics of fire resistance, moisture resistance, moth resistance, good strength and the like. The layer of making an uproar 205 of falling adopts nanometer multilayer structure material to form for the material preparation, and the material that uses through the layer of making an uproar 205 of falling sets up sound insulation coating in passing through the intermediate layer, through reducing the transmitted sound wave energy to play and inhale the syllable-dividing effect of sound, sound insulation coating in addition has the part to inhale the sound nanomaterial simultaneously, it is full of the diameter for the aperture about 1um to inhale the sound nanomaterial surface, the aperture is by the surface about 50% of volume accounting for the particle area of hole to the center depth, has good adsorption efficiency.
Further, in this embodiment, the noise reduction and sound absorption apparatus 200 further includes a buffer layer 206, and the buffer layer 206 is stacked on the noise reduction layer 205. The buffer layer 206 is made of a material having a low density, a buffer property, heat resistance, and a low water absorption; stable chemical performance, difficult corrosion, good mechanical performance, toughness, flexibility, friction resistance, good processing performance, easy molding, lower price and the like.
Further, in this embodiment, the buffer layer 206 is made of a polyethylene foam material.
Further, in this embodiment, the noise reduction and sound absorption device 200 further includes an acoustic insulation layer 202, and the acoustic insulation layer 202 is stacked on the buffer layer 206.
Further, in this embodiment, the sound insulation layer 202 is made of a wave-crest sound-absorbing sponge material. The materials used by the sound insulation layer 202 can absorb a large amount of incident sound wave energy, so that the sound wave can be attenuated, and the noise isolation, reduction and sound absorption effects are good.
The connection layer 204 is disposed on one side of the sound absorbing layer 203, the noise reduction layer 205, the buffer layer 206 and the sound insulation layer 202, and the connection layer 204 uses a polyurethane adhesive as an adhesive, so that the physical and chemical properties of the materials can be maintained at low or ultra-low temperature after the bonding by the type of the adhesive, and the bonding is firm.
The above description is only an alternative embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings or directly/indirectly applied to other related technical fields under the inventive concept of the present invention are included in the scope of the present invention.
Claims (8)
1. An automobile having a noise reducing and sound collecting device, comprising:
the vehicle body comprises a vehicle frame and an axle, and the vehicle frame is arranged on the axle;
the vibration damping structure comprises an elastic connecting piece, one end of the elastic connecting piece is connected with the frame, and the other end of the elastic connecting piece is connected with the axle; and the number of the first and second groups,
the noise reduction and sound receiving device comprises a noise reduction layer and a sound receiving layer, wherein the sound receiving layer is laid on the frame, and the noise reduction layer is laminated on the sound receiving layer;
wheels are arranged at two ends of the axle, and the axle is connected with the frame through a buffer column; the damping structure further comprises a main body, a channel penetrating through the main body is formed in the main body, the elastic connecting piece is inserted in the channel, the elastic connecting piece comprises a spring and two movable column heads, the spring is arranged in the channel, the movable column heads are inserted at two ends of the spring, fastening blocks are arranged at two ends of the main body, and the position of the movable column head is stabilized through the fastening blocks; one end of one of the movable column heads is connected with the frame through a first connecting block, and one end of the other movable column head is connected with the buffer column through a second connecting block;
and a plurality of through sound receiving holes are formed in the side wall of the channel and are used for absorbing noise generated by the elastic connecting piece.
2. The vehicle having a noise reducing and sound absorbing device according to claim 1, wherein the sound absorbing hole is cylindrical at an end away from the central axis of the main body and is spherical at an end close to the central axis of the main body.
3. The automobile with the noise reducing and sound collecting device according to claim 1, wherein sound absorbing cotton is laid on the peripheral side wall of the main body.
4. The vehicle having a noise reducing acoustical transducing apparatus of claim 1, wherein said acoustical transducing layer is made of polyester fiber.
5. The automobile having a noise reducing and sound collecting device according to claim 1, wherein the noise reducing and sound collecting device further comprises a buffer layer laminated on the noise reducing layer.
6. The vehicle having noise reducing and sound absorbing device according to claim 5, wherein the buffer layer is made of a polyethylene foam material.
7. The vehicle having noise reducing and sound absorbing device according to claim 5, wherein said noise reducing and sound absorbing device further comprises a sound insulating layer, said sound insulating layer being laminated on said buffer layer.
8. The automobile with the noise reducing and sound collecting device according to claim 7, wherein the sound insulating layer is made of a wave-crest sound absorbing sponge material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200699.8A CN112537263B (en) | 2020-10-29 | 2020-10-29 | Automobile with noise reduction and sound receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011200699.8A CN112537263B (en) | 2020-10-29 | 2020-10-29 | Automobile with noise reduction and sound receiving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112537263A CN112537263A (en) | 2021-03-23 |
| CN112537263B true CN112537263B (en) | 2022-10-04 |
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| CN202011200699.8A Active CN112537263B (en) | 2020-10-29 | 2020-10-29 | Automobile with noise reduction and sound receiving device |
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Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5219976B2 (en) * | 2009-10-15 | 2013-06-26 | 株式会社神戸製鋼所 | Noise reduction structure |
| CN201736923U (en) * | 2010-06-23 | 2011-02-09 | 浙江吉利汽车研究院有限公司 | Automotive front wall sound insulation pad |
| CN201970936U (en) * | 2010-11-22 | 2011-09-14 | 浙江吉利汽车研究院有限公司 | Vibration damping and noise reduction gasket structure used for automobile |
| CN202242167U (en) * | 2011-09-05 | 2012-05-30 | 浙江吉利汽车研究院有限公司 | Sound absorption and vibration attenuation plate for automobile |
| CN202896472U (en) * | 2012-08-30 | 2013-04-24 | 浙江吉利汽车研究院有限公司杭州分公司 | Vibration reduction sound absorption part on automobile body |
| CN203666551U (en) * | 2013-12-03 | 2014-06-25 | 常州市泛亚微透科技有限公司 | Sound absorption damping vibration attenuation component of automobile |
| CN104061631B (en) * | 2014-06-12 | 2018-03-06 | 珠海格力电器股份有限公司 | Structure of making an uproar and having this air conditioner of making an uproar structure falls in outer machine of air conditioner |
| CN204829098U (en) * | 2015-08-17 | 2015-12-02 | 成都迈科新材料有限公司 | Chemical pipeline sound insulation damping structure |
| CN205616526U (en) * | 2016-05-11 | 2016-10-05 | 安徽好运机械有限公司 | Dirt -proof fork truck frame of making an uproar falls |
| CN205868573U (en) * | 2016-08-19 | 2017-01-11 | 济南大学 | Device of making an uproar falls in damping of being applied to spiral shell centrifuge that crouches |
| CN206691040U (en) * | 2017-04-14 | 2017-12-01 | 湖北鑫佳汽车零部件有限公司 | A kind of auto sound noise reduction flaggy |
| CN206708294U (en) * | 2017-05-11 | 2017-12-05 | 新昌县羽林街道达康机械厂 | A kind of plant equipment damping device |
| CN208277576U (en) * | 2018-04-26 | 2018-12-25 | 江铃控股有限公司 | A kind of sound insulation carpet and automobile |
| CN108868966B (en) * | 2018-07-03 | 2019-10-18 | 皖西学院 | A kind of automobile engine denoising device |
| CN108868968B (en) * | 2018-07-03 | 2019-09-03 | 皖西学院 | A kind of high-efficient noise-reducing device of exhaust tail pipe of automobile |
| CN108825707A (en) * | 2018-07-05 | 2018-11-16 | 潍坊学院 | A kind of vibration absorber of automotive suspension |
| CN109080400A (en) * | 2018-08-03 | 2018-12-25 | 安徽天裕汽车零部件制造有限公司 | A kind of Independent Suspension |
| CN209479346U (en) * | 2018-12-29 | 2019-10-11 | 浙江杭能新能源车业有限公司 | A kind of vehicle bridge damped junction device |
| CN210148876U (en) * | 2019-01-18 | 2020-03-17 | 盐城正远汽车配件有限公司 | Automobile interior trimming panel |
| CN210639979U (en) * | 2019-08-02 | 2020-05-29 | 全球能源互联网研究院有限公司 | Inhale sound insulation composite member and transformer |
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2020
- 2020-10-29 CN CN202011200699.8A patent/CN112537263B/en active Active
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| CN112537263A (en) | 2021-03-23 |
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