KR20120045159A - Insulating shield for exhaust of vehicle and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a shield for a vehicle exhaust device that is fixedly installed to cover the top of the exhaust device to block heat and noise generated in the exhaust device connected to the exhaust pipe of the vehicle engine. The composition is; An embossed aluminum or alloy thereof is formed by pressing a concavo-convex thin plate having a thickness of 0.2 to 0.4 mm into a mold. The embossing is repeated in the form of 4 to 6 mm in one wavelength and 0.8 to 1.2 mm in amplitude. It is characterized in that it is in the form of a waveform formed.

Description

Insulating Shield For Exhaust Of Vehicle And Method For Manufacturing The Same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield for a vehicle body, and more particularly, to a shielding shield for blocking heat and noise generated from an exhaust device in a vehicle such as a passenger car and a manufacturing method thereof.

The present invention relates to a shielding shield (or insulator) for blocking or suppressing the transmission of heat and noise generated from a vehicle body, particularly an engine, a mission, or an exhaust pipe, into an interior of a vehicle.

Conventionally, a shield in the form of a thin plate made of thin aluminum (or an alloy thereof, hereinafter simply referred to as aluminum) has been provided, and in addition, an embossed form has been provided to increase strength and secure a large surface area instead of thinning the thickness. Aluminum plate has good heat transfer rate, light weight and good corrosion resistance, so it can be used in poor use environment and also helps to reduce the weight of the vehicle.

Conventionally, the embossed aluminum vehicle shield is provided in various forms by each manufacturer, but there is no product that satisfies the various needs of consumers at the same time. That is, a vehicle shield shield is not provided in a form that satisfies all the requirements, such as having a satisfactory appearance, high strength, and does not damage the embossed portion during molding to ensure a wide surface area for heat transfer.

Patent Application No. 10-1996-0056344 Patent Application No. 10-2004-0023086 Patent Application No. 10-2008-0037509

An object of the present invention for the above problems, to provide a vehicle shield shield installed on the exhaust device of the engine, the embossed aluminum material with excellent aesthetics and large surface area shielding for a vehicle exhaust device with good heat transfer rate and rigidity It is a specific object to provide a shield and a method of manufacturing the same.

In the shield shield for the vehicle exhaust system is fixed to cover the upper portion of the exhaust device to block the heat and noise generated in the exhaust device connected to the exhaust pipe of the vehicle engine;

An embossed aluminum or alloy thereof is formed by pressing a concavo-convex thin plate having a thickness of 0.2 to 0.4 mm into a mold. The embossing is repeated in the form of 4 to 6 mm in one wavelength and 0.8 to 1.2 mm in amplitude. It is achieved by a shield shield for a vehicle exhaust device characterized in that it is in the form of a waveform formed.

According to a feature of the invention, the waveform is composed of a curve section constituting the belly and the valley and a straight section between the belly and the valley; The abdomen and the valley has a radius of curvature of 1.6 ~ 1.8mm, the angle between the adjacent straight line between the abdomen or the valley may be 118 ~ 123 °.

According to another feature of the present invention, the uneven thin plate is provided by passing a thin plate made of aluminum or an alloy thereof continuously fed between a pair of forming rollers in which the uneven pattern is engraved in the form of the wave on the forming surface. It is achieved by a method of manufacturing a shield shield for a vehicle exhaust system.

According to the above configuration, the specific shape of the embossing is to give a somewhat pointed feeling. Therefore, it has a mechanical strength that can respond more strongly to the impact applied in the up and down direction of the uneven thin plate. Therefore, the rigidity of the shielding shield manufactured by molding it is improved, and even when bending molding, the uneven pattern remains intact, thereby maintaining a large surface area and providing a good aesthetic appearance.

1 is a schematic perspective view of a shield shield for a vehicle exhaust device to which the present invention is applied.
2 is a partial plan view of a shield shield for a vehicle exhaust device according to an embodiment of the present invention.
3 is a cross-sectional view taken along the AA direction or the BB direction of FIG. 2.
Figure 4 is a block diagram of a concave-convex sheet forming roller of the shield shield for a vehicle exhaust apparatus according to an embodiment of the present invention.
5 is a block diagram of a mold for molding a shield for a vehicle exhaust device according to an embodiment of the present invention.
6 to 7 are cross-sectional views of a shield shield for a vehicle exhaust device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Shield shield for vehicle exhaust system of the present invention (1, hereinafter referred to as "shield shield") is spaced apart from the exhaust device at a predetermined interval in order to block the heat and noise generated in the exhaust device connected to the exhaust pipe of the vehicle engine. It is fixed and installed.

The shielding shield 1 is provided by press molding an uneven thin plate 3 having a thickness of 0.2 to 0.4 mm made of embossed aluminum or an alloy thereof. The shielding shield 1 of the present invention can have a similar strength to the thickness of the conventional one by making the stiffness improved.

The form of embossing (uneven pattern, below) is a key aspect of the present invention. The form of embossing is a form of a wave which is repeatedly formed up, down, left and right with 4 to 6 mm as one wavelength (L) and 0.8 to 1.2 mm as amplitude (H). Embossing is formed by a structure in which a plurality of unit protrusions 5 are arranged in a square lattice form. Here, 0.8 to 1.2 mm corresponding to the amplitude (H) is the thickness of the uneven thin plate to the shield shield (1).

The waveform constituting the embossing is composed of a curved section P1 constituting the belly and the valley and a straight section P2 between the belly 5a and the valley 5b. Since the belly 5a and the valley 5b have the same shape, there is no distinction between the front and back surfaces of the uneven plate 3. In FIG. 2, the arrangement of the protrusions 5 is represented by two concentric circles for ease of understanding. In practice, each circle will not appear visually.

The abdomen 5a and the valley 5b have a radius R of 1.6 to 1.8 mm, and the angle A of the adjacent straight section P2 between the abdomen 5a or the valley 5b is 118. 123 °.

Another feature of the present invention lies in the method of manufacturing the shield shield 1. According to the present invention, there is proposed a method of continuously forming the uneven thin plate serving as the material of the shielding shield by a pair of forming rollers 7, 9 for rolling friction movement.

Each of the forming rollers 7 and 9 is formed in a continuous pattern with a wavy pattern as shown in Figs. 2 to 3 on the forming surfaces 7a and 9a which are cylindrical and circumferential surfaces. A pair of forming rollers (7, 9) is precisely meshed with each other, such as gears rotate to make a thin aluminum plate made of flat plate (3). The aluminum thin plate 3 'is unwound in a rolled form and supplied to a forming roller. The uneven thin plate 3 discharged through the forming rollers 7 and 9 is cut into a predetermined size and then introduced into a mold to be molded in the shape shown in FIG. 1.

As shown in FIG. 5, the mold may include an upper mold 11 and a lower mold 13, and a gap G between the upper mold 11 and the lower mold 13 may be formed in the uneven sheet. To 0.8 to 1.2 mm corresponding to the thickness H of the shielding shield. In addition, by coating the protective layer 15 on the inner wall of the mold constituting the molding space with Teflon, etc., it is possible to reduce the coefficient of friction and to maintain the shape of the embossing as circular as possible.

6 is a cross-sectional view of the uneven plate according to another embodiment of the present invention. According to this embodiment, the form of embossing is different from that of the previous embodiment.

According to the present embodiment, the embossing is equivalent to the above embodiment in that the embossing is in the form of a waveform repeatedly formed up, down, left, and right with 4 to 6 mm in one wavelength and 0.8 to 1.2 mm in amplitude.

In addition, one unit protrusion 5 constituting the embossing includes a vessel 5a and a valley 5b each having a curved section P1 having a radius of 1.6 to 1.8 mm, as in the previous embodiment. . However, the difference between the step 5a and the valley 5b further includes a step section P3. The step section P3 has a flat surface 15 having a width K of 1 to 2 mm in the middle. The staircase section P3 is provided in the straight section P2 in the previous embodiment.

The flat surface 15 is located in the middle of the entire height of the uneven thin plate and serves as a reference surface for determining the shape. That is, the flat surface 15 becomes a reference line when bending shielding shield 1 is formed. The first reason for placing the stepped section (P3) is to facilitate the bending of the shield shield. The second reason is to double the sound insulation effect by allowing the sound waves S generated by the bottom exhaust apparatus E to be scattered through more complicated surfaces. That is, the flat surface 15 of the stepped section provides an effect of preventing the sound wave S propagating from one side to be concentrated on the center of the bottom surface of the protrusion 5.

Similarly to the sound waves, the radiant heat generated in the exhaust system E can also be increased by a multi-stage propagation process by stepped sections.

In this regard, an embodiment of the type as shown in FIG. 7 may be proposed. 7 is a cross-sectional view of the uneven thin plate, and it is shown that the groove section P4 is formed in a dimple form in the curved section P1 forming the corrugated vessel 5a and the valley 5b, particularly at the site corresponding to the vertex. Prepared. These groove sections P4 need not be formed in all the unit protrusions 5 but may be formed alternately (or periodically) as shown. This may also be part of efforts to improve sound insulation and insulation by increasing the surface area.

One ; Shielding shield 3; Irregularities
5; Projections 7,9; Forming Roller
11,13; Mold 15; Protective layer
L; Wavelength H; amplitude
P1; Curve section P2; Straight section
P3; Stepped section P4; Home section

Claims (4)

In the shield shield for the vehicle exhaust system is fixed to cover the upper portion of the exhaust device to block the heat and noise generated in the exhaust device connected to the exhaust pipe of the vehicle engine;
An embossed aluminum or alloy thereof is formed by pressing an uneven thin plate having a thickness of 0.2 to 0.4 mm into a mold. The embossing has a form of 4 to 6 mm as one wavelength (L) and 0.8 to 1.2 mm in amplitude (H). And a wave shield formed repeatedly in up, down, left, and right directions. The method of claim 1, wherein the waveform comprises a curve section P1 constituting the belly 5a and the valley 5b and a straight line P2 between the belly 5a and the valley 5b; The boat 5a and the valley 5b have a radius R of 1.6 to 1.8 mm, and the angle A of the adjacent straight section P1 with the boat 5a or the valley 5b therebetween. Shielding shield for vehicle exhaust system, characterized in that 118 ~ 123 °. The method of claim 1, wherein the waveform is a curve (P1) constituting the belly (5a) and the valley (5b); A straight section P2 between the vessel 5a and the valley 5b; And a stepped section P3 provided in the straight section P2;
The ship 5a and the valley 5b have a radius R of 1.6 to 1.8 mm, and the angle A of the adjacent straight section P2 with the ship 5a or the valley 5b interposed therebetween. Shielding shield for vehicle exhaust system, characterized in that 118 ~ 123 °.
Claims [1] A method of manufacturing a shield for a vehicle exhaust system, wherein the shield is installed to be fixed to cover an upper portion of the exhaust system to block heat and noise generated from an exhaust system connected to an exhaust pipe of a vehicle engine.
The uneven thin plate having a thickness of 0.2 to 0.4 mm made of embossed aluminum or an alloy thereof is manufactured by press molding into a mold, wherein the uneven thin plate is formed;
A thin plate made of aluminum or an alloy thereof, which is continuously supplied, is provided by passing between a pair of forming rollers 7 and 9 which are formed with the uneven pattern in the form of the wave on the forming surface and interlock with each other. Method for manufacturing shielding shield for vehicle exhaust system.

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