CN213199014U

CN213199014U - Sound-proof heat-insulation energy-absorbing shock pad for automobile door plate

Info

Publication number: CN213199014U
Application number: CN202021168891.9U
Authority: CN
Inventors: 屈贤
Original assignee: Chongqing Vocational Institute of Engineering
Current assignee: Chongqing Vocational Institute of Engineering
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-05-14
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses an automobile door panel sound insulation and heat insulation energy absorption shock pad, including bonding in proper order and being fixed in inboard composite honeycomb structure layer, silica aerogel layer and the special-shaped honeycomb structure layer of door panel, the special-shaped honeycomb structure layer is connected each other by a plurality of hollow section of thick bamboo post outer walls and forms the honeycomb structure, the transverse section of thick bamboo post is the closed curve that a plurality of concave arcs and convex arcs formed alternately, composite honeycomb structure layer comprises a plurality of composite honeycomb hole units, composite honeycomb hole unit comprises diamond-shaped hole and the circular port of plane distribution on four nodes of diamond-shaped hole, and two adjacent limits of diamond-shaped hole are connected respectively in circular port different positions; the sound insulation and noise reduction effects are good, the energy absorption effect is good, and the riding comfort is improved.

Description

Sound-proof heat-insulation energy-absorbing shock pad for automobile door plate

Technical Field

The utility model relates to a car door field, concretely relates to car door plant sound insulation and heat insulation energy-absorbing shock pad.

Background

The car door plant inboard is equipped with the sound insulating mattress usually, and the waterproof sound insulating mattress of adoption need possess inhale the sound, give sound insulation and insulate against heat and waterproof three kinds of functions, and sound insulation and heat insulation needs the damped material of one deck to guarantee that the frictional sound of car outer tire, the sound of air flow etc. other noises or the sound of vibration do not enter into the driver's cabin and influence the passenger, inhales the sound then need the material of trompil nature with the sound that various transmissions of effectual absorption come. The existing sound insulation pad for the automobile door plate has poor sound insulation effect when in use, and directly causes large noise when the automobile runs.

Therefore, in order to solve the above problems, a sound-insulating, heat-insulating, energy-absorbing and shock-absorbing pad for an automobile door panel is needed, which not only has good sound-insulating and noise-reducing effects, but also has good energy-absorbing effects, and improves the riding comfort.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, providing a car door plant sound insulation and heat insulation energy-absorbing shock pad, not only sound insulation and noise reduction effect is good, and has fine energy-absorbing effect, improves the travelling comfort of taking.

The utility model discloses an automobile door board sound insulation and heat insulation energy-absorbing shock pad, including bonding in proper order and being fixed in inboard composite honeycomb structure layer, silica aerogel layer and the special-shaped honeycomb structure layer of door plant and setting up in special-shaped honeycomb structure layer, special-shaped honeycomb structure layer is connected each other by a plurality of hollow section of thick bamboo outer walls and forms honeycomb structure, the transverse section of thick bamboo is the closed curve that a plurality of concave arcs and convex arcs formed alternately, composite honeycomb structure layer comprises a plurality of composite honeycomb hole units, composite honeycomb hole unit comprises diamond-shaped hole and the circular port of plane distribution on four nodes of diamond-shaped hole, and two adjacent limits of diamond-shaped hole are connected respectively in the different positions of circular port;

further, smooth transition is carried out between the concave arc and the convex arc;

further, the convex arcs are arcs with the same central angle;

further, the arc central angle of the convex arc is 150 degrees;

further, the concave arcs are arcs with the same central angle;

further, the number of the concave arcs and the number of the convex arcs are both 6;

further, the wall thickness of the cylinder is uniform;

further, the wall thickness of the cylinder is 1.5 mm.

The utility model has the advantages that: the utility model discloses a car door plant sound insulation and heat insulation energy-absorbing shock pad, it is good not only to give sound insulation and fall the noise level, and has fine energy-absorbing effect, improves the travelling comfort of taking.

Drawings

The invention will be further described with reference to the following figures and examples:

FIG. 1 is a schematic perspective view of a column with a special-shaped honeycomb structure layer according to the present invention;

FIG. 2 is a schematic cross-sectional view of a column with a special-shaped honeycomb structure layer according to the present invention;

fig. 3 is a schematic structural diagram of the composite honeycomb structure layer of the present invention;

fig. 4 is a schematic structural diagram of the present invention.

Detailed Description

FIG. 1 is a schematic perspective view of a column with a special-shaped honeycomb structure layer according to the present invention; FIG. 2 is a schematic cross-sectional view of a column with a special-shaped honeycomb structure layer according to the present invention; fig. 3 is a schematic structural diagram of the composite honeycomb structure layer of the present invention; fig. 4 is a schematic structural diagram of the present invention. As shown in the figures, the sound-insulating, heat-insulating and energy-absorbing shock pad for the automobile door panel in the embodiment comprises a composite honeycomb structure layer 3, a silica aerogel layer 1 and a special-shaped honeycomb structure layer 2 which are sequentially bonded and fixed on the inner side of the door panel, wherein the special-shaped honeycomb structure layer 2 is formed by mutually connecting the outer walls of a plurality of hollow cylinder columns 21, the transverse cross section of each cylinder column is a closed curve formed by a plurality of concave arcs 22 and convex arcs 23, the composite honeycomb structure layer 3 is formed by a plurality of composite honeycomb hole units, each composite honeycomb hole unit is formed by a diamond hole and a circular hole 32 which is distributed on four nodes of the diamond hole in a planar mode, and two adjacent edges of the diamond hole are respectively connected to different; the composite honeycomb structure layer 3 is formed by uniformly distributing cell elements formed by diamond holes and round holes replacing diamond nodes of the diamond holes, so that the special honeycomb structure is guaranteed not to deform and has a good energy absorption effect in the long-term use process, certain impact resistance is achieved, the composite honeycomb layer is made of rubber materials, the special honeycomb structure is good in air permeability and also plays a role in heat insulation, the diamond holes and the round holes increase the porosity, materials are saved, and the composite honeycomb structure layer is lighter in weight. The "lateral direction of the column 21" means a direction perpendicular to the longitudinal direction of the column 21. Because the transverse cross-sectional shape of the cylinder 21 has the structures of the concave arc 22 and the convex arc 23, and the concave arc 22 and the convex arc 23 are arranged at intervals, the invisible concave part and the convex part which are arranged at intervals are formed on the inner wall of the cylinder 21, the irregular inner wall which is concave and convex is formed, the flow resistance and the bending coefficient are increased through the structure, so that a large amount of friction is generated between sound waves and the irregular inner wall of the cylinder 21, sound energy is converted into heat energy, the heat energy is led out quickly, finally, the sound energy is dissipated and absorbed in a large amount, the effects of sound insulation and noise reduction are achieved, the energy absorption and energy absorption efficiency of the interior trim panel are improved through a special structural layer, the good energy absorption effect is achieved, the interior trim panel has certain. Similarly, the outer wall of the cylindrical columns 21 also presents concave parts and convex parts at intervals to form irregular outer walls with concave and convex fluctuation, and the cylindrical columns 21 connected with each other are combined in a way that the convex outer walls of the cylindrical columns 21 are combined with the concave outer walls of the other cylindrical columns 21, that is, the cylindrical columns 21 are connected with each other by the concave and convex outer walls, so that the stability of connection and the strength of structure are enhanced, and the overall strength of the sound-insulating and noise-reducing interlayer 2 is improved. All the layers are fixedly connected in a bonding mode. Similarly, silica aerogel layer 1 has fine fire-retardant thermal-insulated effect, and through compound honeycomb structural layer 3, silica

aerogel layer

1 and 2 whole structures that form of dysmorphism honeycomb structural layer sound insulation heat-insulation energy-absorbing shock-absorbing function's structure, set up cladding fiber surface fabric on the surface that changes the structure, the wholeness of additional strengthening. In this embodiment, a coating fabric layer is arranged on the outer surface of the special-shaped honeycomb structure layer 2, or the coating fabric is adopted to coat the whole formed by the composite honeycomb structure layer 3, the silica aerogel layer 1 and the special-shaped honeycomb structure layer 2, so that the whole structural strength is higher.

In the present embodiment, the concave arc 22 and the convex arc 23 are in smooth transition; a curved surface structure with smooth transition is formed between the concave arc 22 and the convex arc 23, so that spaced concave parts and convex parts are also formed on the outer wall and the inner wall of the cylindrical column 21, concave-convex fluctuated outer wall and inner wall are formed, and a smooth transition curved surface is formed between the concave parts and the convex parts of the cylindrical column 21 to increase the flow resistance and the bending coefficient, so that a large amount of friction is generated between sound waves and the irregular inner wall of the cylindrical column 21, sound energy is converted into heat energy, the heat energy is led out quickly, and finally the sound energy is dissipated and absorbed in a large amount, thereby achieving the effects of sound insulation. And the curved surface with smooth transition can avoid damage caused by stress concentration, can increase the structural strength of the cylinder 21 and improve the impact resistance of the honeycomb structure.

In this embodiment, the convex arcs 23 are arcs with the same central angle; the energy absorption effect of the honeycomb structure and the overall strength of the structure are improved, but the size of the central angle also has an influence on the overall strength of the honeycomb structure, and the influence is not in a direct proportion relation.

In this embodiment, the central angle of the arc of the convex arc 23 is 150 °; when the central angle of the convex arc 23 is 150 °, the energy absorption efficiency and energy absorption of the honeycomb structure are the best, and the structural strength is also high.

In this embodiment, the concave arcs 22 are arcs with the same central angle; the number of the concave arcs 22 and the number of the convex arcs 23 are both 6; the energy absorption effect requirement and the mechanical property requirement can be met, and the weight reduction purpose is achieved.

In this embodiment, the wall thickness of the column 21 is uniform; the wall thickness of the cylinder 21 is 1.5 mm. Proper wall thickness can improve the energy absorption and structural strength of the honeycomb structure. By "uniform wall thickness" is meant uniform thickness.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides an automobile door panel sound insulation, heat insulation and energy absorption shock pad which characterized in that: the door plate is characterized by comprising a composite honeycomb structure layer, a silica aerogel layer and a special-shaped honeycomb structure layer which are sequentially bonded and fixed on the inner side of the door plate, wherein the special-shaped honeycomb structure layer is formed by connecting a plurality of hollow cylinder outer walls to form a honeycomb structure, the transverse section of each cylinder is a closed curve formed by a plurality of concave arcs and convex arcs in an alternating mode, the composite honeycomb structure layer is formed by a plurality of composite honeycomb hole units, each composite honeycomb hole unit is formed by a diamond hole and a circular hole formed by plane distribution on four nodes of the diamond hole, and two adjacent edges of the diamond hole are respectively connected to different positions of the circular hole.

2. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 1, wherein: the concave arc and the convex arc are in smooth transition.

3. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 2, wherein: the convex arcs are arcs with the same central angle.

4. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 3, wherein: the arc central angle of the convex arc is 150 degrees.

5. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 2, wherein: the concave arcs are arcs with the same central angle.

6. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 1, wherein: the number of the concave arcs and the number of the convex arcs are both 6.

7. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 1, wherein: the wall thickness of the cylinder is uniform.

8. The automobile door panel sound-insulation heat-insulation energy-absorption shock pad as claimed in claim 7, wherein: the wall thickness of the cylinder is 1.5 mm.