CN212194526U

CN212194526U - Sound cotton is inhaled to trunk

Info

Publication number: CN212194526U
Application number: CN202020437390.XU
Authority: CN
Inventors: 曾小荣; 吴斌; 司世战; 廖程亮; 刘小明; 钟丙武; 刘雄; 龙亮; 印遂; 丁健; 徐子寒; 吴训
Original assignee: Jiangling Holdings Co Ltd
Current assignee: Jiangling Holdings Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-12-22
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a sound cotton is inhaled to trunk, include from the top and loop through hot melt adhesive bonding knitting carpet, felt and thermal-insulated aluminium foil together, knitting carpet includes carpet body and carpet area flocking, carpet area flocking paste cover in the upper surface of carpet body, the first recess that a plurality of equidistance interval set up is seted up to the lower surface of carpet body, and a plurality of second recess has been seted up to the upper surface of felt, and the second recess sets up with first recess one-to-one, and the size of second groove opening part cooperatees with the size of first groove opening part, all is equipped with sound insulation material in first recess and second recess. The utility model provides a sound cotton is inhaled to the trunk, when external noise got into the inside of inhaling the sound cotton body, through the preliminary absorption of felt and knitted carpet, again through the secondary absorption of the inside first recess of inside, second recess and the inside sound insulation material of recess to good noise absorption's effect has been reached.

Description

Sound cotton is inhaled to trunk

Technical Field

The utility model relates to an automobile material field, in particular to sound cotton is inhaled to trunk.

Background

With the development of society, the living standard of people is gradually improved. Among them, people have higher and higher requirements for the riding comfort of the whole automobile, which makes the performance design of the automobile very important, and the NVH (noise, vibration, harshness) performance of the whole automobile, which is the most complex of the automobile, has been used as an indispensable middle strength.

In the NVH performance of the whole automobile, noise, vibration and comfort are comprehensive technical indexes for measuring the manufacturing level of the modern automobile. The size of the noise can be improved through two modes of active control and passive control, the active control is controlled from a noise source, the active control comprises the improvement of an engine structure, a vehicle body structure and the like, and the passive control measures such as sound absorption and sound insulation are carried out on a noise source of the automobile.

However, the sound insulation performance of the sound-absorbing cotton used for the automobile trunk at present is poor, so that the sound-absorbing effect is poor, and the service life of the sound-absorbing material is short due to the poor heat resistance of the sound-absorbing cotton, so that the NVH performance of the whole automobile cannot meet the requirement.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a sound cotton is inhaled to trunk to solve the problem that prior art is used for vapour car trunk's sound absorbing material's the relatively poor sound effect of inhaling.

The utility model provides a sound cotton is inhaled to trunk, is including inhaling the sound cotton body, it includes that from the top loops through hot melt adhesive bonding knitting carpet, felt and thermal-insulated aluminium foil together, knitting carpet includes carpet body and carpet area flocking, carpet area flocking paste cover in the upper surface of carpet body, the first recess that a plurality of equidistance interval set up is seted up to the lower surface of carpet body, a plurality of second recess has been seted up to the upper surface of felt, the second recess with first recess one-to-one sets up, second groove opening part's size with first groove opening part's size cooperatees first recess with all be equipped with sound insulation material in the second recess.

The utility model has the advantages that: first recess has been seted up through the lower surface at knitting carpet, set up the second recess that sets up relatively with first recess at the upper surface of felt, and the inner wall upper berth at first recess and second recess is equipped with sound insulation material, when making external noise get into the inside of inhaling the sound cotton body, through the preliminary absorption of felt and knitting carpet, through inside first recess, the secondary absorption of the inside sound insulation material of second recess and recess again, thereby good noise absorbing's effect has been reached.

Preferably, the cross sections of the first groove and the second groove are trapezoidal, the width of the first groove gradually increases towards the direction away from the opening of the first groove, and the width of the second groove gradually decreases towards the direction away from the opening of the second groove.

Preferably, the sound insulating material is filled in the first groove and the second groove.

Preferably, the sound insulation material is laid on the inner walls of the first groove and the second groove.

Preferably, the thickness of the carpet band flocking is 2 mm.

Preferably, the knitted carpet has a gram weight of 650g per square meter and a thickness of 20 mm.

Preferably, the felt has a grammage of 700 per square meter and a thickness of 20 mm.

Preferably, the sound insulation material is made of polyester fiber sound absorption cotton.

Preferably, the aluminum foil layer of the heat insulation aluminum foil is made of 99.5% pure aluminum foil, and the thickness of the aluminum foil is 0.1-0.5 mm.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic cross-sectional view of sound-absorbing cotton for a trunk according to a first embodiment of the present invention;

fig. 2 is a schematic cross-sectional structure view of sound absorbing cotton in a trunk according to a second embodiment of the present invention.

Description of the main element symbols:

knitted carpet	10	Felt	20
				Heat insulation aluminum foil	30	The first groove	40
Second groove	50	Sound insulating material	60
				Sound insulating material	70	Carpet body	11
Carpet belt flocking	12

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, there is shown a trunk sound-absorbing cotton according to a first embodiment of the present invention, which includes a knitted carpet 10, a felt 20, a heat-insulating aluminum foil 30, and a sound-insulating material 60.

Wherein: knitted carpet 10, felt 20 and thermal-insulated aluminium foil 30 bond together in proper order from the top through the hot melt adhesive, knitted carpet 10 includes carpet body 11 and carpet area flocking 12, carpet area flocking 12 pastes and covers in the upper surface of carpet body 11, the first recess 40 that a plurality of equidistance interval set up is seted up to the lower surface of carpet body 11, a plurality of second recess 50 has been seted up to the upper surface of felt 20, second recess 50 sets up with first recess 40 one-to-one, the size of second recess 50 opening part cooperatees with the size of first recess 40 opening part, local carpet body 11 and felt 20 laminating back, second recess 50 forms a sound-absorbing cavity with the concatenation of the first recess 40 of corresponding position, all be equipped with acoustic material 60 in first recess 40 and second recess 50.

In the present embodiment, as shown in fig. 1, the sound-absorbing cotton body is mainly composed of a knitted carpet 10, a felt 20, and a heat-insulating aluminum foil 30. The flocking on the carpet belt flocking 12 is mainly made of short fibers with the length of 0.3cm, the flocking is vertically fixed on the carpet belt coated with the adhesive, the thickness of the manufactured carpet belt flocking 12 is 2mm, and the carpet belt flocking 12 is adhered to the upper surface of the carpet body 11 through the hot melt adhesive.

In this embodiment, twelve first grooves 40 are equally spaced and arranged in parallel on the lower surface of the carpet body 11, twelve second grooves 50 are equally spaced and arranged in parallel on the upper surface of the felt 20, and the sizes of the openings of the first grooves 40 and the second grooves 50 are matched. As shown in the figure, the cross sections of the first groove 40 and the second groove 50 are all isosceles trapezoids, the width of the first groove 40 gradually increases towards the direction of the opening far away from the self, the width of the second groove 50 gradually decreases towards the direction of the opening far away from the self, the sound insulation material 60 is laid on the inner walls of the first groove 40 and the second groove 50, and the sound insulation material 60 is made of polyester fiber sound absorption cotton. When the external noise spreads into this sound-absorbing cotton body, the noise firstly passes through carpet area flocking 12, carpet body 11 and felt 20, utilize carpet area flocking 12, the existing physical characteristics of carpet body 11 and felt 20 and the material characteristic of self come the preliminary absorption to get into this sound-absorbing cotton body inside noise, noise after the preliminary absorption gets into the first recess 40 that sets up in carpet body 11 lower surface and felt 20 upper surface, during second recess 50, the noise carries out abundant contact with carpet body 11 and felt 20's surface in the recess inside, thereby can further the noise absorption. And in the present embodiment, the sound insulation material 60 is laid on the inner walls of the first and

second grooves

40 and 50, and the sound insulation material 60 disposed on the inner walls of the first and

second grooves

40 and 50 is a high sound absorption material, so that noise can be absorbed again. After the sound absorption treatment is carried out for a plurality of times, the effect of absorbing external noise is well achieved.

In this embodiment, the knitted carpet 10 has a grammage of 650 g/square meter and a thickness of 20mm, the felt 20 has a grammage of 700/square meter and a thickness of 20mm, the aluminum foil layer of the heat insulation aluminum foil 30 is made of 99.5% pure aluminum foil, and the aluminum foil has a thickness of 0.1-0.5 mm. When the automobile spare tire is used, the aluminum foil layer of the heat insulation aluminum foil 30 is bonded to a metal plate of an automobile trunk through hot melt adhesive, the carpet flocking 12 of the knitted carpet 10 is located on the outermost side, and the upper surface of the carpet flocking 12 is used for placing a spare tire of an automobile. Because the bottom of inhaling the cotton body of sound is provided with thermal-insulated aluminium foil 30, thereby at the in-process that the car went, the heat of conducting in the trunk from the automobile body can be set up in the thermal-insulated aluminium foil 30 who inhales cotton body bottom of sound and block in the lower surface of aluminium foil layer, thereby avoided the heat direct conduction in the inside of inhaling the cotton body of sound, and the car is at the in-process of traveling, the noise that the trunk produced is inhaling the cotton body absorption back many times through the process, the noise volume of spreading into in the inside of automobile body has been reduced greatly, thereby the good absorption effect to external noise that has reached.

It should be noted that the above implementation procedures are only for illustrating the applicability of the present application, but this does not represent the only implementation flow of the present application, and on the contrary, the present application can be incorporated into the feasible embodiments of the present application as long as the implementation of the present application can be achieved.

To sum up, the utility model discloses sound cotton is inhaled to trunk among the above-mentioned embodiment, first recess 40 has been seted up through the lower surface at knitted carpet 10, second recess 50 relative setting with first recess 40 has been seted up at the upper surface of felt 20, and the inner wall upper berth at first recess 40 and second recess 50 is equipped with sound insulation material 60, when making external noise get into the inside of inhaling the sound cotton body, through the preliminary absorption of felt 20 and knitted carpet 10, pass through inside first recess 40 again, the secondary absorption of second recess 50 and the inside sound insulation material 60 of recess, thereby good noise absorption's effect has been reached.

Referring to fig. 2, it is shown that the sound absorbing cotton of the trunk in the second embodiment of the present invention is different from the sound absorbing cotton of the trunk in the first embodiment in that: the sound insulation material 70 in the present embodiment is completely filled in the inner space of the first groove 40 and the second groove 50, so that when external noise enters the inner space of the first groove 40 and the second groove 50, the sound insulation material 70 can sufficiently absorb the noise, and the noise absorption effect is improved.

It should be noted that the device provided by the second embodiment of the present invention, which implements the same principle and produces some technical effects as the first embodiment, can refer to the corresponding contents in the first embodiment for the sake of brief description, where this embodiment is not mentioned.

To sum up, the utility model discloses sound cotton is inhaled to trunk among the above-mentioned embodiment, through having seted up first recess 40 at knitted carpet 10's lower surface, set up the second recess 50 that sets up relatively with first recess 40 at felt 20's upper surface, and the inner wall upper berth at first recess 40 and second recess 50 is equipped with sound insulation material 60, when making external noise get into the inside of inhaling the sound cotton body, through felt 20 and knitted carpet 10's preliminary absorption, pass through inside first recess 40 again, the secondary absorption of second recess 50 and the inside sound insulation material 60 of recess, thereby good noise absorption's effect has been reached.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a sound cotton is inhaled to trunk which characterized in that: include from the top and loop through hot melt adhesive bonding's knitting carpet, felt and thermal-insulated aluminium foil together, knitting carpet includes carpet body and carpet area flocking, carpet area flocking paste cover in the upper surface of carpet body, the first recess that a plurality of equidistance interval set up is seted up to the lower surface of carpet body, a plurality of second recess has been seted up to the upper surface of felt, the second recess with first recess relative one by one sets up, second groove opening part's size with first groove opening part's size cooperatees first recess with all be equipped with sound insulation material in the second recess.

2. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the cross sections of the first groove and the second groove are trapezoidal, the width of the first groove gradually increases towards the direction of the opening far away from the first groove, and the width of the second groove gradually decreases towards the direction of the opening far away from the second groove.

3. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the sound insulation material is filled in the first groove and the second groove.

4. The sound absorbing cotton for a trunk according to claim 1, characterized in that: and the sound insulation material is laid on the inner walls of the first groove and the second groove.

5. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the thickness of the carpet band flocking is 2 mm.

6. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the knitted carpet has the gram weight of 650g per square meter and the thickness of 20 mm.

7. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the gram weight of the felt is 700 per square meter, and the thickness of the felt is 20 mm.

8. The trunk sound-absorbing cotton according to any one of claims 3 or 4, wherein: the sound insulation material is made of polyester fiber sound absorption cotton.

9. The sound absorbing cotton for a trunk according to claim 1, characterized in that: the aluminum foil layer of the heat insulation aluminum foil is made of 99.5% pure aluminum foil, and the thickness of the aluminum foil is 0.1-0.5 mm.