KR102039033B1 - Polishing device and vehicle interior material - Google Patents

Abstract

The polishing apparatus of the present invention comprises: a polishing portion for polishing a skin portion wrapped in the substrate portion to form a skin weakness portion thinner than other portions; A moving unit which relatively moves the skin unit with respect to the polishing unit; And a controller configured to control at least one of the polishing unit and the moving unit to form the skin-vulnerable portion along the airbag incision line that is cut when the airbag is opened.

Description

Polishing Device and Interior Material for Cars {POLISHING DEVICE AND VEHICLE INTERIOR MATERIAL}

The present invention relates to a polishing device for a vehicle interior and a tooth interior, which are installed in a vehicle interior.

Automotive interiors include instrument panels, door trims, consoles, and the like. The vehicle interior has a substrate, a cushion layer provided on the substrate, and a skin layer provided on the cushion layer.

The substrate is formed in various three-dimensional shapes, while the skin layer is in the shape of a flexible flat plate.

When opening the airbag due to an accident, the vehicle interior should be precisely cut along the airbag incision so as not to interfere with the release of the airbag.

In addition, vehicle interior materials are designed in an invisible design so that air bag incisions are not usually observed with the naked eye, the latest automotive interior trend.

Korean Laid-Open Patent Publication No. 10-2008-0057327 discloses a technique in which a suture line is exposed to the outside along an airbag incision line that is cut when the airbag is opened.

Korean Patent Publication No. 10-2008-0057327

The present invention is to provide a polishing apparatus for forming a weak portion to be cut when opening the air bag, and to provide an invisible type vehicle interior material in which the air bag incision is not visible to the naked eye.

Technical problems to be achieved by the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned above will be clearly understood by those skilled in the art from the following description. Could be.

The polishing apparatus of the present invention comprises: a polishing portion for polishing a skin portion wrapped in the substrate portion to form a skin weakness portion thinner than other portions; A moving unit which relatively moves the skin unit with respect to the polishing unit; And a controller configured to control at least one of the polishing unit and the moving unit to form the skin-vulnerable portion along the airbag incision line that is cut when the airbag is opened.

Vehicle interior material of the present invention is a substrate portion formed with a bone-shaped substrate weak portion along the imaginary air bag incision cut in the air bag opening; And a skin portion wrapped around the base portion and having a thickness thinner than other portions, wherein the skin portion is formed along the airbag incision line. The skin weakness portion may be formed in an area including the airbag incision line therein. .

The polishing apparatus of the present invention can form a thin skin-vulnerable portion having a thin thickness that is cut when the airbag is opened using the polishing portion and the moving portion.

According to the present invention, a skin weakness can be formed over a larger area than the airbag incision.

According to the skin vulnerable portion formed wider than the airbag incision, the phenomenon in which the skin vulnerable portion is unintentionally broken by an external impact not related to the air bag opening can be prevented.

According to the skin-vulnerable portion formed wider than the airbag incision line, an adjacent portion of the matching portion may be cut in place of the matching portion even if the portion matching the airbag incision line is not cut in the skin-weakening portion at the time of opening the airbag due to the unevenness of the strength.

Therefore, according to the present invention, a skin portion which is reliably cut when opening the airbag can be provided. In addition, productivity can be improved since the polishing precision of the skin portion required for opening the airbag is relaxed.

According to the present invention, by controlling the y-axis moving distance or the moving speed of the moving part, it is possible to freely adjust the thickness of the skin weak part. Since the thickness of the skin vulnerable portion can be adaptively adjusted according to the material or thickness of the skin portion, a skin vulnerable portion which is reliably cut when opening the airbag can be provided.

1 is a schematic view showing a vehicle interior of the present invention.
Figure 2 is a schematic diagram showing a cross section of the vehicle interior material of the present invention.
3 is a schematic view showing the polishing apparatus of the present invention.
4 is a schematic view showing the operation of the polishing apparatus of the present invention.
5 is a schematic view showing another operation of the polishing apparatus of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

1 is a schematic view showing a vehicle interior 100 of the present invention, Figure 2 is a schematic view showing a cross section of the vehicle interior 100 of the present invention. 2 is a cross-sectional view along the line AA ′ of FIG. 1.

The vehicle interior 100 illustrated in the drawing may include a base portion 110, a skin portion 130, and a cushion portion 150.

The base unit 110 may form a skeleton of the vehicle interior 100. The interior material 100 for a vehicle may be an instrument panel, a console, a door trim, a glove box, a filler garnish, and the like, in which an air bag is embedded at the rear side. 1 illustrates an instrument panel installed at the front of a vehicle interior as an example of the substrate unit 110. The instrument panel is provided with a first vent hole 101 formed at the front glass window and outputting wind toward the plate glass 챵, and a second vent hole 103 formed at the side glass window and outputting the wind toward the side glass window or the interior of the instrument panel. Can be.

The base unit 110 is an element that provides rigidity of the vehicle interior 100 and may be mounted on a vehicle.

The skin 130 may be wrapped on the substrate 110. The skin unit 130 is for improving the texture, improving the feel, and providing a beautiful appearance, and may include leather, imitation leather, fabric, and the like.

An adhesive may be interposed between the skin 130 and the substrate 110. When the cushion part 150 is present, an adhesive may be interposed between the cushion part 150, and specifically, between the endothelium and the base part 110. The cushion unit 150 may include an elastic body having elasticity.

When the skin 130 or the cushion 150 is coupled to one surface of the substrate 110, the airbag may be installed to face the other surface of the substrate 110. The airbag installed on the other side of the base unit 110 should be opened or discharged through the base unit 110, the cushion unit 150, the skin unit 130 in the emergency situation and into the inside of the vehicle on one side of the base unit 110 in an emergency situation. .

When opening the airbag, the incision of the substrate part 110, the cushion part 150, and the skin part 130 should be made correctly along the airbag incision line 90 to ensure the driver's safety. In order to accurately project the airbag along the airbag incision line 90, the base portion 110, the cushioning portion 150, and the skin portion 130 have a thinner thickness or a hole than the other portions along the airbag incision line 90. Perforated weaknesses may be formed.

Substrate weakening portion 119, which is cut when the airbag is open, may be formed along the base portion 110 along the virtual airbag incision line 90. The substrate weakening part 119 may include holes formed at predetermined intervals along the airbag incision line 90, or valleys continuously formed along the airbag incision line 90.

The cushion unit 150 may be provided with a cushion weak part 159 along a virtual airbag incision line 90 that is cut when the airbag is opened in the vehicle interior 100.

Skin portion 130 may be formed along the airbag incision 90, the skin weakening portion 139 which is cut when the airbag is opened. The skin weakening part 139 may be formed to have a thickness thinner than other portions of the skin part 130.

Compared to the base portion 110 or the cushion portion 150, the thickness of the skin portion 130 is very thin and the rigidity is weak. Therefore, the boundary between the non-vulnerable portion and the skin-vulnerable portion 139 where the skin-vulnerable portion 139 is not formed may be easily observed with the naked eye, and if the skin-vulnerable portion 139 is incorrectly processed compared to other weak portions, the airbag incision 90 I cannot match the latest invisible design tendency to design) invisible to the naked eye.

Therefore, unlike the weak part of the other member, the skin weak part 139 of the very thin skin part 130 must be gradually and continuously reduced in thickness from the non-vulnerable part to the weak part, so that the skin weak part 139 may not be noticeable. .

When the portion where the skin vulnerable portion 139 is not formed among the skin portions 130 is referred to as the non-vulnerable portion, the skin portion 130 of the skin portion 130 is gradually moved from the boundary formed by the non-vulnerable portion and the skin vulnerable portion 139 to the inside of the skin vulnerable portion 139. The thickness can be reduced continuously. For this purpose, it is necessary to precisely control the polishing apparatus.

In order to achieve unintentional breakage of the skin weakening portion 139, to secure the precision required for the process of forming the skin weakening portion 139, and to achieve a reliable incision when opening the airbag, the skin weakening portion 139 of the present invention is shown in the drawings. As described above, the airbag incision 90 may be formed in a large area included therein.

For example, the skin vulnerable portion 139 may be formed with an area where all the edges are spaced apart from the airbag incision line 90. Skin vulnerable portion 139 may be formed to have a width larger than the diameter or width of the substrate vulnerable portion 119, the cushion vulnerable portion 159 corresponding to the hole or valley.

Even if a portion that exactly matches the airbag incision 90 is not incised, an adjacent portion from the airbag incision 90 can be reliably incision.

A geometric break prevention structure that can be easily cleaved for impact in the direction applied from the airbag and not broken for impact applied from another direction can be easily formed using a large area of the skin vulnerable portion 139. As a result, a phenomenon in which the skin weakening portion 139 is unintentionally broken can be prevented.

The polishing apparatus illustrated in FIG. 3 may include a polishing unit 550, a moving unit 530, and a controller 590.

The polishing unit 550 may form the skin weakening part 139 that is thinner than other parts by polishing the skin part 130 wrapped on the base part 110 or the cushion part 150.

A polishing unit 550 such as a grindstone for polishing the skin unit 130 and a movable means 570 for rotating or moving the polishing unit 550 with respect to the skin unit 130 may be provided.

The moving unit 530 may move the skin unit 130 relative to the polishing unit 550. The moving unit 530 may move the polishing unit 550 with respect to the skin unit 130 fixed to the base, or move the skin unit 130 with respect to the polishing unit 550 fixed to the base.

The moving unit 530 may be provided with a supporting unit 510 on which the skin unit 130 is supported, a moving unit such as a rail or a motor for moving the supporting unit 510. The moving part 530 shown in the drawing represents a rail for guiding the movement of the support means 510.

The controller 590 may control the polishing unit 550 or the moving unit 530 such that the skin weakening unit 139 is formed in a larger area than the airbag incision 90.

As illustrated in FIG. 1, the controller 590 may form the skin vulnerable portion 139 in a closed curve shape in which the airbag incision 90 is included therein. The closed curve at this time may include a polygon, such as a square, a circle, and the like. The amount of polishing of the skin unit 130 may be increased as a continuous increase function from the edge of the skin weakening unit 139 toward the center of the skin weakening unit 139.

4 is a schematic view showing the operation of the polishing apparatus of the present invention.

Define the x, y, and z axes that are orthogonal to each other. At this time, the skin 130 may be placed on the support means 510 of the moving part 530 forming the xy plane. The skin weakening part 139 is formed on the bottom of the skin part 130, and the bottom of the skin part 130 may face the polishing part 550.

The polishing unit 550 may be formed to be movable along the z axis by the movable means 570. The moving part 530 may be formed to be movable along the x axis and the y axis by the moving part.

As an example, the controller 590 may control the z-axis movement of the polishing unit 550 that determines the thickness of the skin weakening unit 139. By controlling the z-axis movement of the polishing unit 550, the polishing amount of the skin unit 130 may be increased as a continuous increase function from the edge of the skin weakening unit 139 toward the center of the skin weakening unit 139.

As an example, the controller 590 may control the x-axis movement and the y-axis movement of the moving unit 530 that determines the area of the skin weakening unit 139. The length of the skin weakening part 139 may be determined by the x-axis movement of the moving part 530, and the width of the skin weakening part 139 may be determined by the y-axis moving of the moving part 530.

On the other hand, when the thickness of the skin weakening portion 139 is determined only by the z-axis movement of the polishing unit 550, high control precision may be required for the z-axis movement of the polishing unit 550. To reduce the control precision, the x-axis movement or the y-axis movement of the moving unit 530 may be used to adjust the thickness of the skin weakening unit 139.

For example, assuming that the z-axis height of the polishing unit 550 is fixed, the moving unit 530 moves so that the skin unit 130 and the polishing unit 550 face only as much as an area for forming the skin weakening unit 139. The x-axis movement or the y-axis movement of the unit 530 may be controlled. That is, the polishing thickness of the skin unit 130 may be adjusted by controlling the moving speed or the moving position of the moving unit 530.

In addition, the skin portion 130 is rapidly moved at the border boundary of the skin vulnerable portion 139, and the skin portion 130 is slowly moved at the central portion of the skin vulnerable portion 139. If controlled differently, the thickness may gradually be polished from the edge boundary of the skin weakening part 139 to the center of the skin weakening part 139.

On the other hand, the control unit 590 of the polishing unit 550 to operate in one of the polishing mode in which the polishing unit 550 polishes the skin unit 130 and the escape mode in which the polishing unit 550 escapes from the skin unit 130. You can control the z-axis movement.

For example, in the polishing mode, the polishing unit 550 is moved or completed along one direction of the z axis (negative direction of the z axis in FIG. 3) such that the polishing unit of the rotating polishing unit 550 is in close contact with the skin unit 130. It may be an operation mode.

The escape mode may be an operation mode in which the polishing unit 550 is moved or completed along the other direction of the z axis (positive direction of the z axis in FIG. 3) such that the polishing unit of the polishing unit 550 is spaced apart from the skin unit 130. have.

The controller 590 may move the moving unit 530 along the x axis in the polishing mode state. The controller 590 may move the moving unit 530 along the y axis in an escape mode.

The movement of the moving part 530 along the x axis in the polishing mode will be defined as longitudinal polishing. For example, the longitudinal polishing may refer to the polishing of the skin 130 formed along the extending direction of the airbag incision 90.

When the y-axis movement of the moving unit 530 is completed by the controller 590, longitudinal polishing may be performed. In this case, the controller 590 may adjust the polishing thickness of the skin unit 130 by adjusting the y-axis movement distance of the moving unit 530.

For example, when the longitudinal grinding operation performed along the x-axis direction in FIG. 4 is completed, the controller 590 may move the moving unit 530 along the y-axis. When the polishing width of the skin portion 130 to be polished by one longitudinal polishing is defined, the moving distance of the moving portion 530 moving along the y-axis so that all parts of the skin weakening portion 139 is polished may be less than or equal to the polishing width.

When the moving distance of the moving part 530 moving along the y axis is 0, longitudinal polishing may be performed a plurality of times for the same portion. If the polishing portion 550 is formed to be in close contact with the surface of the skin portion 130 to be faced irrespective of the depth of the skin weakening portion 139, the thickness w polished by one longitudinal polishing operation may be constant. have.

Therefore, when the longitudinal polishing is performed twice on the same portion, the portion is polished by 2w, and the skin weakening portion 139 thinned by 2w in the total thickness may be formed.

On the other hand, if the y-axis movement distance of the moving part 530 is equal to the polishing width, the skin weakening part 139 thinned by w in the overall thickness may be formed.

If the moving distance of the moving part 530 moving along the y axis between the longitudinal polishing operations is large, the thickness of the skin weakening part 139 may be relatively thick because the polishing thickness is reduced. On the other hand, if the moving distance of the moving part 530 is reduced, since the same part is repeatedly polished by the polishing part 550, the polishing thickness may be increased. As a result, the thickness of the corresponding portion of the skin weakening portion 139 can be thinned.

As such, the polishing apparatus of the present invention can easily adjust the thickness of the skin weakening part 139 by adjusting the y-axis moving distance of the moving part 530.

5 is a schematic view showing another operation of the polishing apparatus of the present invention.

The controller 590 may move the moving unit 530 along the x-axis and the y-axis in the polishing mode.

The controller 590 may adjust the polishing thickness of the skin unit 130 by adjusting the y-axis moving speed of the moving unit 530 regardless of the x-axis moving speed of the moving unit 530.

As an example, when the moving speed of the y-axis of the moving part 530 is high, since the polishing of the polishing part 550 to a specific portion is made less, the thickness of the polishing may be reduced. When the moving speed of the y-axis of the moving part 530 is slow, since the polishing part 550 is polished to a specific part many times, the specific part may be much polished.

If the moving speed of the moving part 530 is controlled differently for each part of the skin vulnerable part 139, the thickness of the skin part 130 is increased from the boundary formed by the non-vulnerable part and the skin vulnerable part 139 to the inside of the skin vulnerable part 139. Can be reduced continuously. In this way, invisible processing of the skin portion 130 can be achieved.

On the other hand, the controller 590 may move the moving unit 530 stepwise along a vertical direction perpendicular to the airbag incision line 90 whenever the longitudinal polishing parallel to the airbag incision line 90 is completed. Meanwhile, the controller 590 may continuously move the moving unit 530 along the vertical direction while the longitudinal polishing is in progress.

Although embodiments according to the present invention have been described above, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments of the present invention are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the following claims.

90 Airbag Incision 100 Vehicle Interior
101 ... first vent hole 103 ... second vent hole
110 ... Division 119 ... Division Vulnerable
130 ... skin 139 ... skin vulnerable
150 Cushion 159 Cushion weak part
550 ... Polishing unit 570
510 ... support means 530 ... moving parts
590 control unit

Claims (9)

A substrate portion having a substrate weak portion formed along an imaginary airbag incision line that is cut when the airbag is opened;
And a skin part wrapped around the base part and having a thickness thinner than other areas, the skin part being formed along the airbag incision line.
The substrate weakening part includes holes formed at predetermined intervals along the airbag incision line or valleys continuously formed along the airbag incision line,
When opening the airbag, the hole of the base portion or the valley of the base portion is broken,
The skin-vulnerable portion is formed in a closed curve shape in which an array of holes or valleys of the substrate portion is contained therein so that the substrate portion around the hole or the bone ruptures the skin-vulnerable portion when the airbag is opened.
The skin-vulnerable portion is formed by an area larger than the arrangement of the holes or valleys so that the airbag incision line is included in the area of the closed curve of the skin-vulnerable portion.
The skin weakening portion is formed to have a width larger than the diameter or width of the substrate weakening portion,
When the x, y, and z axes that are orthogonal to each other are defined,
A polishing portion moves along the z axis to polish the skin weakness,
The skin part is relatively moved by the x-axis and y-axis movement of the moving part which relatively moves the skin part with respect to the polishing part.
The boundary between the non-vulnerable part and the skin-vulnerable part and the thickness inside the skin-vulnerable part are adjusted according to the z-axis movement of the polishing part.
The area of the skin weakening portion is adjusted according to the x-axis movement and the y-axis movement of the moving unit,
When the portion of the skin portion where the skin weakness is not formed is called a non-vulnerable portion, the skin weakness portion is continuously reduced from the boundary formed by the non-vulnerable portion and the skin weakness portion toward the inside of the skin weakness portion. Automotive interior materials to be polished.
A substrate portion having a substrate weak portion formed along an imaginary airbag incision line that is cut when the airbag is opened;
And a skin part wrapped around the base part and having a thickness thinner than other areas, the skin part being formed along the airbag incision line.
The substrate weakening part includes holes formed at predetermined intervals along the airbag incision line or valleys continuously formed along the airbag incision line,
When opening the airbag, the hole of the base portion or the valley of the base portion is broken,
The skin-vulnerable portion is formed in a closed curve shape in which an array of holes or valleys of the substrate portion is contained therein so that the substrate portion around the hole or the bone ruptures the skin-vulnerable portion when the airbag is opened.
The skin-vulnerable portion is formed by an area larger than the arrangement of the holes or valleys so that the airbag incision line is included in the area of the closed curve of the skin-vulnerable portion.
The skin weakening portion is formed to have a width larger than the diameter or width of the substrate weakening portion,
When the x, y, and z axes that are orthogonal to each other are defined,
A polishing portion moves along the z axis to polish the skin weakness,
The skin part is relatively moved by the x-axis and y-axis movement of the moving part which relatively moves the skin part with respect to the polishing part.
The polishing portion is moved in the z-axis to operate in one of a polishing mode for polishing the skin portion and an escape mode escaped from the skin portion,
The boundary between the non-vulnerable portion and the skin vulnerable portion and the thickness inside the skin vulnerable portion are adjusted according to the x-axis moving speed or the y-axis moving speed of the moving part.
When the portion of the skin portion where the skin vulnerable portion is not formed is called a non-vulnerable portion, the skin vulnerable portion is continuously reduced from the boundary formed by the non-vulnerable portion and the skin vulnerable portion toward the inside of the skin vulnerable portion. Automotive interior materials to be polished.
A substrate portion having a substrate weak portion formed along an imaginary airbag incision line that is cut when the airbag is opened;
And a skin part wrapped around the base part and having a thickness thinner than other areas, the skin part being formed along the airbag incision line.
The substrate weakening part includes holes formed at predetermined intervals along the airbag incision line or valleys continuously formed along the airbag incision line,
When opening the airbag, the hole of the base portion or the valley of the base portion is broken,
The skin-vulnerable portion is formed in a closed curve shape in which an array of holes or valleys of the substrate portion is contained therein so that the substrate portion around the hole or the bone ruptures the skin-vulnerable portion when the airbag is opened.
The skin-vulnerable portion is formed by an area larger than the arrangement of the holes or valleys so that the airbag incision line is included in the area of the closed curve of the skin-vulnerable portion.
The skin weakening portion is formed to have a width larger than the diameter or width of the substrate weakening portion,
When the polishing of the skin portion made by the polishing portion along the extending direction of the airbag incision is defined as longitudinal polishing,
The polishing thickness of the skin portion is adjusted by adjusting the longitudinal movement trajectory of the movable portion moving the skin portion relative to the polishing portion and the movement trajectory of the movable portion formed along a vertical direction perpendicular to the airbag incision line,
When the portion of the skin portion where the skin vulnerable portion is not formed is called a non-vulnerable portion, the skin vulnerable portion is continuously reduced from the boundary formed by the non-vulnerable portion and the skin vulnerable portion toward the inside of the skin vulnerable portion. Automotive interior materials to be polished.
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