KR20160108715A - Instrument panel assembly combined with airbag door - Google Patents

Abstract

Disclosed is an instrument panel assembly with a structure wherein an airbag door is coupled to be able to rotate. The instrument panel assembly with the structure wherein the airbag door is coupled to be able to rotate of the present invention includes: an instrument panel having a door insertion hole wherein a protrusion unit protrudes from one side of a circumference toward the other side of the circumference and multiple through-holes are formed on the other side of the circumference the door insertion hole; and the airbag door inserted into the door insertion hole and having a holding unit covering upper and lower parts of the protrusion unit on one edge and multiple insertion units inserted into the through-holes on one edge and an opposite edge. The airbag door is rotated around the protrusion unit after the holding unit covers the protrusion unit, thus the insertion units are inserted into the through-holes. According to the present invention, provided is the instrument panel assembly with the structure wherein the airbag door is coupled to be able to rotate capable of maintaining the stability of the coupling structure of the instrument panel and the airbag door even in case of vehicle accidents by providing a strong coupling force even though a work for coupling the instrument panel and the airbag door is manually performed by a worker.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an instrument panel assembly having an air bag door rotation coupling structure,

The present invention relates to an instrument panel assembly having an airbag door rotation coupling structure. More particularly, the present invention relates to an instrument panel assembly having an airbag door rotation coupling structure. More particularly, And more particularly to an instrument panel assembly having an airbag door rotation coupling structure which is configured to maintain the stability of the joint structure between the airbag doors.

An instrument panel is a part of a dashboard with various mechanical devices on the front of the driver's seat. It is also called an instrument board.

Instrument means instrument, panel means control panel. Among the dashboards are instrument panels that display various kinds of information necessary for driving, steering wheels that manipulate the direction of the car, and center festia equipped with audio and air conditioner control panels.

The passenger air bag is an airbag installed to protect passengers in the passenger seat. It is installed above the glove box of the instrument panel and operates when an impact above the set value is applied to the entire vehicle when the vehicle collides from the front, Protect the upper body.

Korean Patent Publication No. 2008-0018527 discloses an airbag module for a vehicle, and Japanese Laid-Open Patent Publication No. 2008-0018527 discloses an airbag module in which an instrument panel in which a seat hole is formed, an airbag door in a seat hole, Mounting means for mounting the airbag door and the airbag housing between the extension portion and the airbag housing, and mounting means for mounting the airbag door and the airbag housing between the airbag door and the mounting hole portion, And a connecting means for installing the airbag door so that the airbag door is engaged with the seat back hole portion.

Open Publication No. 2008-0018527 discloses a structure in which the airbag door and the airbag housing are engaged without a separate fastening means and the airbag door and the instrument panel are also engaged with each other without a separate fastening means, There is an advantage in that the unit price of the battery is lowered.

However, in Japanese Patent Application Laid-Open No. 2008-0018527, the protruding portion is forced into the hook portion to engage the airbag door with the instrument panel. The instrument panel and the airbag door are so designed that the coupling structure is maintained even when the vehicle accident occurs. When the projecting portion formed at one end of the airbag door is forcibly inserted into one hook portion and then the projecting portion formed at the other end is forcedly inserted into the opposite hook portion, the projecting portion at the other end and the hook portion at the opposite end are engaged So that there is a possibility of breakage and it is difficult to assemble the protrusions of both ends at the same time into the hook portion.

Accordingly, in the process of assembling the projections at both ends into the hook portion at the same time, the horizontal force is required along with the great force of the human being.

Korean Patent Registration No. 1451893 discloses a device for mounting an air bag suit on a crash pad, and Japanese Patent Publication No. 1451893 discloses a frame having an opening on the inside thereof. A dummy provided in an opening of the frame and supporting the crash pad; A punch provided at an upper end of the frame for pressing the airbag chute introduced into the crash pad; A sensor for detecting whether or not the airbag suit and the crash pad are engaged with each other; And a controller provided on the frame for indicating whether or not the airbag suit and the crash pad are engaged according to a signal input from the detection sensor.

However, there is a problem that the production time is lengthened by the process of attaching each of the airbag chute and the crash pad to the mounting device and then operating the mounting device, thereby causing an energy loss to operate the purchasing and mounting device of the expensive mounting device There is a problem that the unit price of the airbag suit and the crash pad increases.

(0001) Korean Patent Publication No. 2008-0018527 (published on February 28, 2008) (0002) Korean Patent Publication No. 1451893 (Registered on Apr. 10, 2014)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an airbag door coupling structure in which a coupling operation between an instrument panel and an airbag door is performed manually by a worker while maintaining a stable coupling structure between the instrument panel and the airbag door, To provide an instrument panel assembly.

According to an aspect of the present invention, there is provided an instrument panel in which a door insertion hole is formed, a protrusion protruding toward the opposite peripheral edge is formed on one side of the door insertion hole, and a plurality of through holes are formed on the opposite peripheral edge; And an airbag door which is inserted into the door insertion hole and is formed with a holding part which surrounds the upper end and the lower end part of the protruding part at one edge and a plurality of insertion parts which are inserted into the through hole at the opposite edge to the one edge, Wherein the holding portion surrounds the protrusion and the airbag door is rotated with the protrusion as an axis to insert the insertion portion into the through-hole, thereby achieving an instrument panel assembly having an airbag door rotation coupling structure.

The holding part may include: a first holding part that is in close contact with an upper end of the protruding part; And a second holding part which is formed below the first holding part and is in close contact with a lower end of the protruding part.

Wherein the second holding part is formed in a plurality of and spaced apart from each other, and the projecting part is formed with a plurality of concave grooves through which the second holding part passes in the longitudinal direction, and the second holding part holds the concave groove in the longitudinal direction And then moves in the lateral direction to cover the upper and lower ends of the protrusions.

Wherein the first holding part further extends toward the protruding part than the second holding part, the protruding part includes: a first protruding part whose upper end is in close contact with the first holding part; And a second protrusion extending from the first protrusion and formed in a plurality of the protrusions to define the concave groove therebetween.

The insertion portion includes: an extension portion extending downward from an opposite edge of the airbag door; And a latching portion formed at a lower end of the extending portion and extending and contracting and passing through the through-hole and hooked to a lower end of the through-hole.

The fastening part may be formed to have a larger width than the lower end and the upper end, and the hollow part may be formed on the fastening part so that the fastening part is laterally expanded and contracted.

Wherein the airbag door comprises: a door portion having the holding portion and the insertion portion formed at both ends thereof and having a groove portion ruptured by the inflating force of the airbag and a first ridge portion formed along the longitudinal direction of the groove portion to guide the rupture direction of the groove portion; And a wall portion extending downward from the door portion and to which the airbag module is coupled.

The door portion may be formed with a second ridge portion in front of both ends of the groove portion to block tears other than the groove portion, and the second ridge portion may be formed on the opposite side of the wall portion.

According to the present invention, since the holding portion rotates about the protrusion after the protrusion is wrapped around the protrusion, the insertion portion is inserted into the through hole, so that the operation of combining the instrument panel and the airbag door is performed manually by the operator, So that it is possible to provide an instrument panel assembly having an airbag door rotation coupling structure in which the stability of the joint structure between the instrument panel and the airbag door is maintained even in the event of a vehicle accident.

1 is an exploded perspective view of an instrument panel assembly having an airbag door rotation coupling structure according to an embodiment of the present invention;
2 and 3 are perspective views showing an airbag door of an instrument panel assembly having an airbag door rotation coupling structure of FIG. 1;
Figs. 4 to 6 are cross-sectional views showing a state in which the instrument panel of the instrument panel assembly having the airbag door rotation coupling structure of Fig. 1 and the airbag door are rotationally coupled. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

The instrument panel assembly having the airbag door rotation coupling structure according to the present invention is configured such that the operation of combining the instrument panel and the airbag door is performed manually by a worker and a rigid coupling force is formed so that the stability of the coupling structure between the instrument panel and the airbag door Is maintained.

FIG. 1 is an exploded perspective view of an instrument panel assembly having an airbag door rotation coupling structure according to an embodiment of the present invention, and FIGS. 2 and 3 are perspective views showing an airbag door of an instrument panel assembly having the airbag door rotation coupling structure of FIG. And Fig. 4 to Fig. 6 are sectional views showing the state in which the instrument panel of the instrument panel assembly having the airbag door rotation coupling structure of Fig. 1 and the airbag door are rotationally coupled.

1, an instrument panel assembly 1 having an airbag door rotation coupling structure according to an embodiment of the present invention is configured such that an operation of combining an instrument panel 10 and an airbag door 20 is manually performed by a worker And a rigid coupling force is formed so that the stability of the coupling structure between the instrument panel 10 and the airbag door 20 is maintained even in the event of a vehicle accident and includes the instrument panel 10 and the airbag door 20 .

The instrument panel 10 is a part of the dashboard where various mechanical devices are mounted on the front of the driver's seat. The instrument panel 10 is also referred to as an instrument board. The instrument panel 10 includes an instrument panel for displaying various information required for driving, , Center fesia equipped with a control panel of audio or air conditioner, is referred to as an instrument panel (10).

1, an instrument panel assembly 1 having an airbag door rotationally coupled structure according to an embodiment of the present invention includes an instrument panel 10, regardless of the instrument panel, the steering wheel, The assembly of the instrument panel, the steering wheel, and the control panel of the audio or air conditioner described above can be used either before or after the instrument panel assembly 1 having the airbag door rotation coupling structure of the present invention Should be understood to be performed.

In the following description, upper and lower portions will be described in order to facilitate understanding.

1, the instrument panel 10 is formed with a door insertion hole DH into which the airbag door 20 is inserted.

An airbag module (not shown) is coupled to the airbag door 20. The airbag (not shown) expands in front of the passenger seat through the airbag door 20 in the event of a vehicle collision to protect the upper body of the passenger. The passenger air bag technology is well known in the automotive industry and will not be described in further detail herein.

As shown in FIG. 1, a protrusion 11 and a through hole 10h are formed around the door insertion hole DH.

As shown in Figs. 1 and 6, the projecting portion 11 is formed on one side of the door insertion hole DH, and is configured to be wrapped around the holding portion 21A of the airbag door 20. [ The projecting portion 11 is formed to protrude toward the opposite side of the door insertion hole DH.

As shown in Fig. 1, the projecting portion 11 is formed with a plurality of concave grooves 11h. The concave groove 11h is a portion through which the second holding portion 21A2 to be described later passes and will be described later along with a description of the second holding portion 21A2.

1 and 4, the through hole 10h is a structure in which the insertion portion 21B of the airbag door 20 is inserted, and is formed around the door insertion hole DH, As shown in FIG. The through holes 10h are formed along the above-mentioned opposite circumference, and the plurality of through holes 10h are spaced apart from each other.

The airbag door 20 joins the instrument panel 10 and the airbag module, and is inserted and coupled to the door insertion hole DH. 2 to 4, the airbag door 20 is configured to include a door portion 21 and a wall portion 22. [

The wall portion 22 is configured such that an airbag module (not shown) is coupled to the door portion 21 and extends downward from the door portion 21, as shown in Figs. The structure of the connection between the wall portion 22 and the airbag module is a known technique in various forms, and a detailed description thereof will be omitted.

As shown in Figs. 2 to 4, the door portion 21 is structured to be broken by an airbag in the event of a vehicle collision, and a holding portion 21A and an insertion portion 21B are formed at both ends.

As shown in Figs. 3 to 6, the insertion portion 21B is inserted into the through hole 10h, and is formed along the opposite edge of the holding portion 21A. Each of the plurality of insertion portions 21B is inserted and coupled to the plurality of through holes 10h.

As shown in Figs. 3 and 4, the insertion portion 21B is configured to include the extension portion 21B1 and the engagement portion 21B2. The extension portion 21B1 is formed to extend downward from the edge of the door portion 21 and the engagement portion 21B2 is formed at the lower end portion of the extension portion 21B1.

As shown in FIGS. 4 to 6, the latching portion 21B2 is formed with a portion larger than the through hole 10h in the horizontal direction and is retracted to return to the original state after passing through the through hole 10h, 10h. As shown in FIGS. 3 and 4, it is preferable that the engaging portion 21B2 is formed in a substantially rhombic shape having a larger width between the lower end and the upper end.

As shown in FIGS. 4 to 6, it is preferable that a hollow portion BH is formed in the engaging portion 21B2. The engaging portion 21B2 is laterally elastically deformed so as to be able to escape through the through hole 10h by the hollow portion BH. It is preferable that the hollow portion BH is formed to extend over the engaging portion 21B2 and the extending portion 21B1.

As shown in Figs. 2 and 4 to 6, the holding portion 21A is formed at one edge of the airbag door 20 so as to surround the upper and lower ends of the projection 11 described above. The holding part 21A includes a first holding part 21A1 and a second holding part 21A2.

As shown in FIGS. 2 and 4 to 6, the first holding portion 21A1 is formed to be in close contact with the upper end of the protruding portion 11 and protrudes toward the protruding portion 11.

The first holding portion 21A1 is in close contact with the upper end of the protrusion 11 and exposed to the passenger seat in a state where the instrument panel 10 and the airbag door 20 are engaged. Of course, the instrument panel 10 is further coupled with a cover (not shown), so that the joint between the airbag door 20 and the instrument panel 10 is not exposed to the passenger in the completed vehicle.

2 and 4 to 6, the second holding portion 21A2 is configured to be in close contact with the lower end portion of the protruding portion 11. The second holding portion 21A2 protrudes from the lower portion of the first holding portion 11 toward the protruding portion 11, do. The first holding part 21A1 and the second holding part 21A2 are spaced from each other by a predetermined distance in the longitudinal direction.

As shown in Fig. 2, the second holding portions 21A2 are formed in plural and are laterally spaced from each other.

2 and 4 to 6, the second holding portion 21A2 is formed on the wall portion 22. However, the second holding portion 21A2 may be formed to extend downward from the door portion 21 Of course it is.

4 to 6, when the airbag door 20 is inserted into the door insertion hole DH to form a coupling force with the instrument panel 10, the holding portion 21A and the protruding portion 11 are first After the coupling force is formed, the insertion portion 21B and the through hole 10h form a coupling force. First, the coupling structure of the holding portion 21A and the protrusion 11 will be described as follows.

Referring to FIG. 1, the protruding portion 11 is formed with a plurality of concave grooves 11h through which the plurality of second holding portions 21A2 each pass in the longitudinal direction. As shown in FIGS. 4 and 5, When the second holding portion 21A2 passes through the concave groove 11h in the longitudinal direction and then the airbag door 20 is moved in the lateral direction, that is, the longitudinal direction of the first holding portion 21A1, the first holding portion 21A1 The second holding portion 21A2 covers the upper end and the lower end of the protrusion 11 and forms a binding force for restricting the upward and downward flow of the holding portion 21A.

Although not shown in detail, at the time when the second holding portion 21A2 passes through the concave groove 11h in the longitudinal direction, the insertion portion 21B and the through hole 10h are not inserted to be shifted from each other in the lateral direction, When the door 20 is moved in the lateral direction, the first holding part 21A1 and the second holding part 21A2 surround the upper and lower ends of the protruding part 11 and the insertion part 21B and the through hole 10h So that they can be inserted.

4 to 6, the first holding part 21A1 further extends toward the protruding part 11 than the second holding part 21A2, and the protruding part 11 has the upper end connected to the first holding part 21A1, And a second protruding portion 11B in which the lower end portion is in close contact with the second holding portion 21A2.

A plurality of second projections 11B are formed to form a plurality of concave grooves 11h therebetween and the second holding portions 21A2 pass through the concave grooves 11h and are then moved downwardly of the second projections 11B The first holding portion 21A1 is completely in contact with the upper end of the first projection 11A along the entire length so that the vertical movement between the projection 11 and the holding portion 21A is prevented A firm bonding force is formed.

5, when the second holding portion 21A2 moves in the lateral direction after passing through the concave groove 11h, the frictional force between the first holding portion 21A1 and the first protruding portion 11A is formed to be small , The end of the first holding portion 21A1 is preferably bent toward the first projection 11A.

The first holding part 21A1 and the second holding part 21A2 move in such a manner that the second holding part 21A2 passes under the second protruding part 11B after passing through the concave groove 11h So that the protruding portion 11 is pressed in both directions. The pressing force prevents the airbag door 20 from being shaken by the vehicle vibration.

4 to 6, when the airbag door 20 is inserted into the door insertion hole DH to form a coupling force with the instrument panel 10, the holding portion 21A and the protruding portion 11 are first After the coupling force is formed, the insertion portion 21B and the through hole 10h form a coupling force. The coupling structure of the insertion portion 21B and the through hole 10h will be described below.

As described above, at the time when the second holding portion 21A2 passes through the concave groove 11h in the longitudinal direction, the insertion portion 21B and the through hole 10h are not inserted to be shifted from each other in the horizontal direction, When the airbag door 20 is moved in the lateral direction so that the holding portion 21A2 is positioned below the second projection 11B, the first holding portion 21A1 and the second holding portion 21A2 are moved to the upper end of the projection 11, And at the same time the insertion portion 21B and the through hole 10h are inserted into each other so as to be inserted.

5, when the worker applies an external force downward to the upper portion of the door portion 21 in a state where the insertion portion 21B and the through hole 10h are mutually engaged with each other, 20 are rotated about the projecting portion 11 as shown in Fig.

The insertion portion 21B is inserted into the through hole 10h by the rotation of the airbag door 20 and the engaging portion 21B2 is contracted to return to the original state after passing through the through hole 10h, The airbag door 20 is firmly fixed to the instrument panel 10 while being inserted into the door insertion hole DH.

As disclosed in Japanese Patent Laid-Open Publication No. 2008-0018527, conventionally, the protruding portion has to be forcedly inserted into the hook portion in order to engage the airbag door with the instrument panel, and the instrument panel and the airbag door are prevented from being damaged The protruding portion formed at one end of the airbag door is forcibly inserted into one hook portion and the protruding portion formed at the other end is forcibly inserted into the other hook portion when the protruding portion formed at one end of the airbag door is forcibly inserted into the other hook portion, There is a problem that a too large force is required to engage the opposite hook portion and there is a possibility of breakage and it is difficult to assemble the protruding portions at both ends into the hook portion at the same time.

In the process of assembling the protruding portions at both ends simultaneously forcibly fitting the protruding portions into the inside of the hook portion, the horizontal force is required along with the great force of the human being. Therefore, as disclosed in Patent Publication No. 1451893, .

The instrument panel assembly 1 having the airbag door rotation coupling structure of the present invention is characterized in that the airbag door 20 rotates about the projection 11 after the holding portion 21A covers the projecting portion 11 so that the insertion portion 21B The instrument panel 10 and the airbag door 20 can be prevented from being damaged due to the large force and the horizontality being not required together as the airbag door 20 is inserted into the through hole 10h, The coupling operation between the instrument panel 10 and the airbag door 20 is maintained even when the vehicle is in an accident, because the coupling operation can be performed manually by the operator.

As shown in Figs. 1 and 6, the door portion 21 is formed with a groove 21h, a first ridge P1 and a second ridge P2.

As shown in FIGS. 1 and 6, the groove 21h is formed as a 'C' shape along the bottom surface of the door portion 21 as a portion ruptured by an inflating force of the airbag when an airbag (not shown) is inflated.

As shown in FIGS. 1 and 6, the first raised portion P1 has a structure for guiding the rupture direction of the groove 21h, and protrudes on the upper surface of the door portion 21 along the longitudinal direction of the groove 21h .

Although not shown in detail, the inflating force of the airbag upon inflation of the airbag is transmitted to the bottom surface of the door portion 21, and the door portion 21 is ruptured along the thinned groove portion 21h. When the groove 21h ruptures, a rupture of the 'C' shape is formed in the door portion 21 along the groove 21h.

The inner portion of the portion ruptured in the 'C' shape of the door portion 21 is opened toward the passenger seat by the hypothetical line connecting both ends of the groove portion 21h by the inflating force of the airbag, One passenger is exposed to the front.

1 and 6, the door portion 21 is provided with a second ridge portion P2 for preventing the rupture of the door portion 21 from a portion other than the groove portion 21h in front of both ends of the groove portion 21h, .

The second ridge portion (P2) is formed on the upper surface of the door portion (21) and is formed on the opposite side of the wall portion (22). Even if the second ridge portion P2 is formed on the opposite side of the wall portion 22 and the shear force greater than the designed value is transmitted to the second ridge portion P2 in the rupture direction of the groove portion 21h, ) Is effectively prevented from being exceeded.

According to the present invention, as the holding portion 21A covers the protruding portion 11, the airbag door 20 rotates about the protruding portion 11 and the insertion portion 21B is inserted into the through hole 10h, The coupling operation of the panel 10 and the airbag door 20 is performed manually by a worker and a stable coupling force is formed so that the stability of the coupling structure between the instrument panel 10 and the airbag door 20 is maintained even during a vehicle accident It becomes possible to provide an instrument panel assembly 1 having an airbag door rotation coupling structure.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

1: Instrument panel assembly 10: Instrument panel
20: Airbag door DH: Door insertion hole
21: door part 11:
21A: holding portion 11A: first projection
21A1: first holding portion 11B: second projection
21A2: second holding portion 11h: concave groove
21B: insertion portion 10h: through hole
21B1: Extension
21B2:
BH: hollow portion
21h:
P1: first ridge
P2: second ridge
22: wall portion

Claims (8)

An instrument panel in which a door insertion hole is formed, a protrusion protruding toward the opposite circumference is formed on one side of the door insertion hole, and a plurality of through holes are formed on the opposite side of the door insertion hole; And
And an airbag door having a plurality of insertion portions to be inserted into the through holes, the airbag door being formed at one edge thereof with a holding portion surrounding the upper end portion and the lower end portion of the protrusion portion,
Wherein the holding portion surrounds the protrusion and the airbag door rotates about the protrusion to insert the insertion portion into the through-hole. The method according to claim 1,
Wherein,
A first holding part in close contact with an upper end of the protrusion; And
And a second holding part which is formed below the first holding part and is in close contact with a lower end of the protruding part. 3. The method of claim 2,
Wherein the second holding portions are formed in a plurality of and spaced apart from each other,
A plurality of concave grooves through which the second holding portion passes in the longitudinal direction are formed in the projecting portion,
Wherein the second holding part moves in a lateral direction after passing through the concave groove in the longitudinal direction to enclose the upper end and the lower end of the protruding part. The method of claim 3,
Wherein the first holding part further extends toward the protruding part than the second holding part,
The projection
A first projecting portion whose upper end is in close contact with the first holding portion; And
And a second protrusion extending from the first protrusion and formed in a plurality of the recesses to define the recessed groove therebetween. The method according to claim 1,
The insertion portion
An extension extending downward from an opposite edge of the airbag door; And
And an engagement portion formed at a lower end of the extended portion and extending and retracted to be engaged with a lower end of the through hole after passing through the through hole. 6. The method of claim 5,
Wherein the engaging portion is formed so as to be laterally thicker than the lower end and the upper end thereof,
Wherein the fastening portion is formed with a hollow portion on an inner side of the fastening portion so that the fastening portion is laterally expanded and contracted. The method according to claim 1,
The airbag door
A door portion having the holding portion and the inserting portion formed at both ends thereof and having a groove portion ruptured by the inflating force of the airbag and a first ridge portion along the longitudinal direction of the groove portion to guide the rupture direction of the groove portion; And
And a wall portion extending downward from the door portion and coupled with the airbag module. 8. The method of claim 7,
Wherein the door portion is provided with a second ridge portion in front of both ends of the groove portion for preventing rupture other than the groove portion,
And the second ridge portion is formed on the opposite side of the wall portion.

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