KR101475218B1 - Air duct for vehicle and manufacturing method of the same - Google Patents

Abstract

The present invention relates to an air duct for a vehicle and a method of manufacturing the same, and more specifically, to an air duct for a vehicle capable of minimizing noise generated due to absorbing air or backflowing of the absorbed air due to pressure change caused by engine vibration and valve operation, and a method of manufacturing the same. More specifically, the present invention relates to an integrated type air duct for a vehicle simplifying a manufacturing process, and a method of manufacturing the same which include a rib (200) formed in an integrated tubular shape by injection molding or thermal compression molding, and protruding outward from an outer surface. Meanwhile, an air duct for a vehicle installed in an engine room of a vehicle is formed of an upper body (110) and a lower body (120), wherein coupling portions (300) protruding outward are formed at both ends of the upper body (110) and the lower body (120), the coupling portions (300) of the upper body (110) and the lower body (120) contact each other to be welded and coupled by ultrasonic waves, and the rib (200) protruding outward is disposed at outer surfaces of the upper body (110) and the lower body (120). Also, the upper body (110) is made of plastic material, and the lower body (120) is made of PET material.

Description

Technical Field [0001] The present invention relates to an air duct for a vehicle,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air duct for a vehicle and a method of manufacturing the same. More particularly, the present invention relates to an air duct for a vehicle, To an air duct for a vehicle and a manufacturing method thereof.

Generally, a vehicle engine requires fuel and air to operate, and air is injected into the engine through an intake system. In this case, the intake system is provided with an air duct for sucking outside air through the inlet and guiding to the engine, and an air cleaner for filtering foreign matter in the sucked outside air, between the engine and the air duct, A hose is provided between the air cleaner and the engine.

The air duct applied to the intake system of such an engine generates noise due to vibration and vibration due to vibrations and vibrations having a specific frequency due to the pressure change caused by the reciprocating motion of the intake and exhaust valves and the piston of the engine during running of the vehicle. In order to prevent this, conventionally, a resonator or the like is applied to resonance to remove a specific frequency, or to reduce the overall noise level, so that the overall length of the air duct is designed to be long to increase the resistance value, thereby reducing noise.

However, the air duct according to the related art has a disadvantage in that only the resonance frequency of the resonator applied to the resonator is limited by the applied resonator, and the increase of the length of the air duct is limited by the narrow engine room structure, It causes interference with other constituent parts to greatly deteriorate the maintenance performance, and also affects the operation characteristics of the engine.

Korean Patent Laid-Open No. 10-2008-0019951 ("Structure for Reducing Intake Noise of Automotive Air Duct ", published on Mar. 03, 2008, hereinafter referred to as Prior Art 1) discloses a structure for reducing noise by changing the structure of an air duct Korean Patent No. 10-0897103 ("Noise Reduction Device for Intake System ", dated May 4, 2009, hereinafter referred to as Prior Art 2) discloses that the material of the air duct is made of a porous material to reduce noise have. However, the change of the air duct structure of the prior art document 1 has a limitation in removing the noise of a specific frequency, and the air duct of the prior art document 2 has a problem in that noise reduction is limited because a porous material is partially used.

Korean Patent Laid-Open No. 10-2008-0019951 ("Structure for Reduction of Intake Noise of Air Duct for Automobile ", published on Mar. 3, 2008) Korean Patent No. 10-0897103 ("Noise Reduction Device for Intake System ", registered on May 4, 2009)

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to provide an air conditioner and a method for controlling the air conditioner, So that the noise can be minimized. In order to simplify the manufacturing process of the air duct for a vehicle, an air duct formed integrally with the air duct is provided.

The present invention relates to an air duct for a vehicle installed in an engine room of a vehicle, characterized in that the air duct for a vehicle is formed as an integral tubular shape through injection molding of a material or thermal compression molding of a single fabric.

In addition, the air duct is provided with a rib 200 protruding outwardly from the outer surface.

Further, the air duct is characterized by being made of a PET (polyethylene terephthalate) material.

The vehicle air duct includes an upper body 110 and a lower body 120 and has an engaging portion 300 protruding outward at both ends of the upper body 110 and the lower body 120 And the engaging portions 300 of the upper body 110 and the lower body 120 are in contact with each other.

In addition, the upper body 110 is formed through injection molding, and the lower body 120 is formed through thermal compression molding.

The upper body 110 is made of a composite resin or a plastic material and the lower body 120 is made of a PET (polyethylene terephthalate) material.

The air duct may include a rib 200 protruding outwardly from an outer surface of the upper body 110 and the lower body 120.

In addition, the coupling unit 300 is coupled through a single fusion method selected from ultrasonic wave, thermal or vibration welding.

In addition, the coupling portion 300 of the upper body 110 is formed in a shape of a letter 'A'.

Meanwhile, a method for manufacturing an air duct for a vehicle includes a fabric preparation step (S100) for preparing a tail end of an air duct between an upper mold (410) and a lower mold (420); And an air duct manufacturing step S200 of forming an air duct for a vehicle having a tubular shape by thermo compression molding by the upper mold 410 and the lower mold 420.

In addition, the fabric preparation step (S100) may include the steps of (S100a) placing the fabric 110a on the lower mold 420; (S100b) of placing an inner mold (430) forming an inner mold on the fabric (110a); And a step (S100c) of folding the fabric 110a around the inner mold 430 and placing the fabric 1101 under the upper mold 410.

In addition, the fabric preparation step S100 may include positioning the first raw material 110b on the lower mold 420 (S101a); (S101b) of placing an inner mold (430) forming an inner mold on the first end (110b); And placing a second end 120b on the inner mold 430 (S101c); .

On the other hand, another vehicle air duct manufacturing method includes an upper and lower body manufacturing step S110 for manufacturing the upper body 110 and the lower body 120, respectively, by injection molding or thermal compression molding; And a coupling step (S210) in which the coupling parts 300 provided at both ends of the upper body 110 and the lower body 120 are brought into contact with each other and fused together via ultrasonic waves.

Also, the upper body 110 is formed through injection molding, and the lower body 120 is formed through thermal compression molding.

As described above, according to the air duct for a vehicle according to the embodiment of the present invention, the air sucked into the air duct during traveling of the vehicle is backwashed due to the vibration of the engine and the pressure change caused by the valve operation, And there is an effect that noise is minimized.

Further, there is an effect of simplifying the manufacturing process by manufacturing an integral type air duct for automobiles by thermal compression molding.

1 is a perspective view of an air duct for an integrated vehicle according to the present invention;
2 is a sectional view of an air duct for an integrated vehicle according to the present invention
3 is a perspective view of an air duct for a vehicle constituted by upper and lower portions of the present invention.
4A and 4B are cross-sectional views of an air duct for a vehicle constituted by upper and lower portions of the present invention
5 is a flowchart of a manufacturing method of an air duct for an integrated vehicle according to the present invention
6 is a flowchart illustrating a method of manufacturing an integrated air duct for an automotive vehicle according to the present invention.
7 is a schematic view of a manufacturing process of an integrated type vehicle air duct according to a first embodiment of the present invention
8 is a view showing a flow chart of a second embodiment of a method for manufacturing an air duct for an integrated vehicle according to the present invention.
9 is a schematic view of the manufacturing process of the integrated vehicle air duct according to the second embodiment of the present invention
10 is a flowchart of a method of manufacturing an air duct constituted by the upper and lower portions of the present invention

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

[0001] The present invention relates to an air duct for a vehicle, in which air sucked into an air duct during running of a vehicle radiates and minimizes noise generated by backflow due to vibration of the engine and pressure change caused by a valve operation, Thereby simplifying the manufacturing process.

The air duct for a vehicle according to the present invention is an air duct formed in a tubular shape by injection molding or thermocompression molding and is formed to protrude along the longitudinal direction and the circumferential direction of the air duct in the outer direction of the outer surface to enhance the durability of the air duct Ribs are provided.

Fig. 1 is a perspective view of an air duct for an integrated vehicle, and Fig. 2 is a sectional view of an air duct for an integrated vehicle. Referring to FIGS. 1 and 2, an integrated air duct 100a for an automotive vehicle will be described. The automotive air duct 100a is formed as an integral tube through thermal compression molding. Ribs 200 protruding in the direction of the arrow. The ribs 200 are formed along the longitudinal or circumferential direction of the air duct, and may be formed variously according to the shape of the air duct. In addition, the cross section of the air duct may be formed in a circular or polygonal shape, and it is most preferable that the air duct is formed in a circular shape so that the noise waves are not reflected. In addition, the integrated air duct for vehicles uses a polyethylene terephthalate (PET) material, which is a porous material that can reduce noise when the noise of the vehicle engine reverses.

Fig. 3 is a perspective view of an air duct for a vehicle constituted by upper and lower portions, and Figs. 4A and 4B are sectional views of air ducts for vehicles constituted by upper and lower portions. 3 and 4A and 4B, a vehicle air duct 100b having upper and lower parts is composed of an upper body 110 and a lower body 120, and the upper body 110 110 are formed by injection molding, and a composite resin or a plastic material is used to enhance durability. In addition, when the upper body 110 is used as a plastic material, the outer appearance is clean, and it is easy to cope with safety regulations and to maintain it. The lower body 120 is formed by thermocompression molding, and a polyethylene terephthalate (PET) material, which is a porous material, is used for discharging noise and reducing the noise. The upper and lower air ducts 100b are provided with ribs 200 protruding outwardly on the outer surface of the air ducts for enhancing durability. The ribs 200 extend in the longitudinal direction of the air ducts And is formed along the circumferential direction. In addition, the ribs 200 may be formed variously according to the shape of the air duct.

At both ends of the upper body 110 and the lower body 120, a coupling part 300 protruding outwardly of the air duct is provided. The joining portions 300 of the upper body 110 and the lower body 120 are brought into contact with each other to be brought into contact with each other and are fused and bonded together by ultrasonic waves.

In addition, referring to FIG. 4B, the coupling unit 300 is welded and coupled using heat or vibration in addition to the ultrasonic welding method. The coupling part 300 of the upper body 110 is formed in a shape of a letter 'A' so as to cover and protect the coupling part of the lower body 120.

FIGS. 6 and 7 show a first embodiment of a manufacturing method of an air duct for an integrated vehicle, and FIGS. 8 and 9 show a second embodiment of a manufacturing method of an air duct for an integrated vehicle.

Referring to FIG. 5, a method for manufacturing an air duct for an integrated vehicle will be described. The air duct for an integrated type vehicle is formed as an integral air duct of a cylinder through thermal compression molding. More specifically, A fabric preparation step (S100) of preparing a fabric by positioning the fabric; And an air duct manufacturing step (S200) of manufacturing an air duct for a vehicle in which the fabric is thermo-compression-molded by the upper mold and the lower mold to have a tubular shape. One or two sheets of fabric may be used as the fabric, and various embodiments will be described with reference to Figs. 6 to 9. Fig.

Fig. 6 is a flow chart of Embodiment 1 of the method for manufacturing an integrated-type vehicle air duct, and Fig. 7 is a schematic view of the manufacturing process of Embodiment 1 of the method for manufacturing an integrated-type vehicle air duct. The first embodiment includes a fabric preparation step (S100) for preparing the fabric 110a of the air duct between the upper mold 410 and the lower mold 420, And an air duct manufacturing step S200 in which the raw fabric 110a is formed by a thermo compression molding process by the mold 410 and the lower mold 420 to form a tubular air duct for a vehicle. S100) includes the step (S100a) of placing the fabric 110a on the lower mold 420; (S100b) of placing an inner mold (430) forming an inner frame on the fabric (110a); And a step (S100c) of folding the fabric 110a around the inner mold 430 and placing the fabric 1101 under the upper mold 410; . Thereafter, the process continues to the air duct manufacturing step (S200). The upper mold 410 is lowered to produce an integral type air duct for automobiles through thermal compression molding. At this time, the integrated automotive air duct does not require any other bonding agent, and is manufactured by bonding by a thermal compression process.

Fig. 8 is a flow chart of a second embodiment of an air duct manufacturing method for an integrated vehicle, and Fig. 9 is a schematic view of a manufacturing process of an air duct manufacturing method according to a second embodiment of the present invention. Embodiment 2 is a fabrication preparation step (S100) in which a tail end of an air duct is positioned between an upper mold 410 and a lower mold 420 to prepare it; And an air duct manufacturing step S200 of forming an air duct for a vehicle in which the fabric is thermo-compression-molded by the upper mold 410 and the lower mold 420 to have a tubular shape. In the fabric preparation step S100 (S101a) of placing the first end 110b on the lower mold 420; (S101b) of placing an inner mold (430) forming an inner mold on the first end (110b); And placing a second end 120b on the inner mold 430 (S101c); . Thereafter, the process continues to the air duct manufacturing step (S200). The upper mold 410 is lowered to produce an integral type air duct for automobiles through thermal compression molding. At this time, the integrated automotive air duct does not require any other bonding agent, and is manufactured by bonding by a thermal compression process.

10 is a flowchart of a method of manufacturing an air duct for a vehicle constituted by upper and lower portions. The method for manufacturing an air duct for a vehicle includes an upper and lower body manufacturing step (S110) for manufacturing an upper body and a lower body, respectively, by injection molding or thermal compression molding; And a coupling step (S210) in which the coupling parts provided at both ends of the upper body and the lower body are brought into contact with each other and fused together via ultrasonic waves.

At this time, the upper body is formed by injection molding using a composite resin or a plastic material in order to enhance durability. In addition, the lower body is made of PET (polyethylene terephthalate) material, which is a porous material for discharging and reducing noise, and it is preferable to place the fabric between the upper mold and the lower mold by thermal compression molding Do. When the upper body and the lower body manufactured as described above are coupled to each other, an air duct having a tubular shape having a circular or square cross section is formed. The upper body and the lower body are formed at both ends of the upper body and the lower body so as to protrude outwardly from the air duct. The joining portions are brought into contact with each other so as to be in contact with each other, and are welded and bonded together by ultrasonic waves.

The fusion bonded by ultrasonic waves is a principle of fusion at the joining part in accordance with heat generation, softening and melting phenomenon by ultrasonic vibration. Accordingly, when the ultrasonic vibration is applied in a state where the upper body and the lower body are in contact with each other, instantaneous frictional heat is generated on the contact surface and dissolved and bonded.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100a: Air Duct for Integrated Vehicle
100b: Air ducts for vehicles constituted by upper and lower parts
110: upper body
120: lower body
110a: Fabric
110b: first fabric
120b: second fabric
200: rib
300:
410: upper mold
420: Lower mold
430: Inner mold

Claims (14)

delete delete delete delete delete delete delete delete delete A method of manufacturing an air duct for a vehicle,
A fabric preparation step (S100) for preparing a tail end of the air duct between the upper mold (410) and the lower mold (420); And
An air duct manufacturing step S200 of forming an air duct for a vehicle having a tubular shape by thermo compression molding by the upper mold 410 and the lower mold 420; Lt; / RTI >
The fabric preparation step (SlOO)
Placing the fabric 110a on the lower mold 420 (S100a);
A step (S100b) of placing an inner mold (430) forming an inner mold on the fabric (110a); And
A step S100c of folding the fabric 110a under the upper mold 410 with the inner mold 430 as a center;
Wherein the air ducts are formed in a substantially rectangular shape. delete delete delete delete

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