KR20090007149A

KR20090007149A - Automobile crash pad

Info

Publication number: KR20090007149A
Application number: KR1020070070846A
Authority: KR
Inventors: 정명근
Original assignee: 현대모비스 주식회사
Priority date: 2007-07-13
Filing date: 2007-07-13
Publication date: 2009-01-16

Abstract

A crash pad for a vehicle is provided to reduce the failure rate according to errors since it is not necessary to consider damages to a skin of the crash pad by removing a process of cutting a foam and an airbag door. A crash pad(100) for a vehicle comprises: a core part(110) disposed at a driver seat and at the front of a passenger seat; a skin(120) which is disposed to form a space in an upper part of the core part, which forms an inner surface of the vehicle, and on which cutting lines(121) are formed, the cutting lines being cut during collision of the vehicle such that an airbag is projected; a foam(130) foamed in the space in the upper part of the core part; and an airbag door(140) having a cutout hole formed therein such that the airbag door is opened from the core part during the collision of the vehicle.

Description

Car crash pad {AUTOMOBILE CRASH PAD}

The present invention relates to a crash pad for a vehicle, and more particularly to a crash pad for a vehicle in which the structure of the airbag door is formed so that the airbag can protrude without expensive equipment.

In general, the body is equipped with engines and transmissions, and various accessories necessary for driving, and is made of a material with sufficient rigidity to protect the passengers in the interior of the car from an external shock in the event of a collision and a rollover. In addition, the vehicle body is formed in a structure that can reduce the injury by minimizing the force transmitted to the passenger by absorbing the impact.

A crash pad is installed in front of the driver's seat and front passenger's seat, and the crash pad is provided with an air bag that can absorb a shock applied to the passenger by protruding to the passenger when the vehicle crashes and functioning as a cushion.

1 is a perspective view illustrating a tier shim line of a vehicle crash pad according to the related art, and FIG. 2 is a cross-sectional view taken along line II ′ of FIG. 1.

1 and 2, the crash pad 1 forms the front of the driver's seat and the front passenger's seat and is disposed on the upper surface of the core part 10 and the core part 10 having rigidity to smoothly form a vehicle inner surface. 20 is provided. A tear seam line 21 formed on the skin 20 is cut off during a vehicle collision to form an air bag (not shown).

The foam 30 is foamed between the core part 10 and the skin 20, and an airbag door 40 is disposed at the lower part of the skin 20 so as to be opened when the vehicle collides. . The conventional crash pad 1 cuts the foam 30 and the airbag door 40 along the tier seam line of the skin to open the airbag door 40 to form a space 50. The space 50 must be post-processed to perform a process such as laser scoring or milling scoring.

The post process for cutting the foam and airbag door is expensive due to the expensive equipment and processing process, and the probability of defective products is increased due to the precision or processing error of the equipment. Therefore, there is a need for improvement.

The present invention was created by the necessity as described above, and does not require expensive equipment, and an object thereof is to provide a crash pad for a vehicle that can reduce the time of the manufacturing process.

A vehicle crash pad according to the present invention includes: a vehicle crash pad having a core portion disposed in front of a driver's seat and a passenger seat, the vehicle having a space formed on an upper portion of the core portion to form an inner surface of the vehicle, A skin in which a tier seam line is formed so that the airbag protrudes in a collision; Foam foamed in the space; And an airbag door in which a cutout hole is formed along a "c" shape that is opened when the vehicle collides with the core part.

Preferably, the airbag door has a protrusion that is convex toward the skin at the outer circumference of the incision hole.

Preferably, the tier seam line is formed outward in a direction in which the airbag door is opened in a vertical direction in which the cutting hole is formed.

Preferably, the method further comprises a failed rod disposed above the incision hole to prevent the foam from leaking.

Unlike the conventional invention, the vehicle crash pad according to the present invention does not perform a process such as laser scoring on the foam and the airbag door, thereby reducing manufacturing costs by not using expensive equipment, and cutting the foam and airbag door. Since the post-process is not performed, the manufacturing process time can be shortened.

In addition, the conventional crash pad should be taken into account the precision of the equipment because the foam and airbag door should be cut without damaging the skin, the vehicle crash pad according to the present invention does not require a process for cutting the foam and airbag door skin Since it is not necessary to take into account the damage, the incidence of defects due to errors can be reduced.

Hereinafter, an embodiment of a vehicle crash pad according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

3 is a cross-sectional view of a vehicle crash pad according to an embodiment of the present invention.

Referring to FIG. 3, the vehicle crash pad 100 includes a skin 120, a foam 130, an airbag door 140, and a protrusion 145.

The vehicle crash pad 100 is disposed in front of the driver's seat and the passenger seat and includes a core part 110 having rigidity so as to maintain a shape from external impact.

The skin 120 is disposed to form a space in which the foam 130 can be injected above the core part 110 and forms an inner surface of the vehicle. At the lower portion of the skin 120 facing the foam 130, a tier seam line 121 is formed to have a thin thickness so that the airbag easily protrudes when the vehicle collides with each other.

The tier seam line 121 is formed to form an α angle to the outside of the direction in which the airbag door 140 is opened in the vertical direction in which the incision hole 141 described below is formed, so that the foam 130 is scattered. Can reduce the amount.

Foam 130 is foamed in the space between the skin 120 and the core portion 110 to reduce the injury by minimizing the force transmitted to the passenger by absorbing the impact during the collision and rollover accident.

The airbag door 140, which is formed to protrude an airbag (not shown) installed in the vehicle crash pad 100, is an open portion of the core part 110 that is opened so that the airbag protrudes out of the skin 120. The airbag door 140 is formed with a cutting hole 141 along the "c" shape which is opened when the vehicle collides.

In addition, the airbag door 140 has a protrusion 145 convex in the direction of the skin 120 on the outer circumference of the cutting hole 141, so that the airbag door 140 is located on the upper portion of the airbag door 140 where the cutting hole 141 is located. The thickness of the foam 130 to be foamed is not formed as high as the height of the protrusion 145 protrudes is formed thin. Accordingly, the thickness of the foam 130 cut according to the opening of the airbag door 140 may be formed to be thin to facilitate opening. The lower inner side of the protrusion 145 preferably forms a stage 147.

In addition, the failed 149 is disposed at the upper portion of the cutting hole 141 to prevent the foam 130 from leaking.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view illustrating a state in which a tier shim line of a vehicle crash pad according to the prior art is formed;

2 is a cross-sectional view taken along line II ′ of FIG. 1;

Explanation of symbols on the main parts of the drawings

100: vehicle crash pad 110: core portion

120: skin 121: tear seam line

130: Foam 140: airbag door

145: protrusion 149: failed

Claims

A crash pad for a vehicle having a core portion disposed in front of a driver's seat and a passenger seat,

A skin disposed so as to form a space on an upper portion of the core part and forming an inner surface of the vehicle and having a tier seam line formed to cut the airbag to protrude in a collision of the vehicle;

Foam foamed in the space; And

The crash pad for a vehicle, characterized in that it comprises an airbag door which is formed in the cutting hole along the "c" shape that is opened during the collision of the vehicle in the core portion.

The method of claim 1,

The airbag door has a crash pad for a vehicle, characterized in that it has a protrusion that is convex toward the skin in the outer circumference of the cutting hole.

The method of claim 1,

The tier seam line is a vehicle crash pad, characterized in that formed in the vertical direction in which the incision hole is formed outward in the direction in which the airbag door is opened.

The method according to any one of claims 1 to 3,

The crash pad for a vehicle, characterized in that it further comprises a failed rod disposed on the top of the cutting hole to prevent the foam from leaking.