JP2001213261A - Head lining support structure adaptable for curtain air bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a head lining which can suppress the manufacturing cost, and realize the stable quality without impairing the unfolding property of a curtain air bag when the curtain air bag is unfolded. SOLUTION: An upper dual lock fastener 1 and a lower dual lock fastener 2 disposed on the head lining 5 are engaged with each other to reliably constitute an end portion of the head lining 5. Thus, no sagged portion is formed in the end by the vibration, the shock or the gravity, and the quality control of the appearance finish can be facilitated without increasing the manufacturing man hour. The engaging force of the upper dual lock fastener 1 with the lower dual lock fastener 2 is not so large as to resist the unfolding force of the curtain air bag 4 in a general structure, and thus, unfolding of the curtain air bag 4 is not prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a structure of a vehicle body headlining corresponding to a curtain airbag storage and deployment.

[0002]

2. Description of the Related Art FIG. 3 shows a cross section perpendicular to the axis of a conventional structure around a vehicle body side inner panel. An upper head lining 13 is provided inside the vehicle for the purpose of cushioning the head of the occupant to the body side inner panel 7 or the air conditioner duct 9 at the time of a vehicle collision or the like. The head lining 13 has a function of accommodating the curtain airbag 12 as well as a function of a cushioning material for protecting the occupant.

In the prior art, as shown in FIG. 3, a closed end 1 between a headlining 13 and a window shield 11 to facilitate deployment of a curtain airbag 12.
In 3a, a mechanism for fixing the head lining 13 to the body side inner panel 7 is not provided. At the time of a vehicle collision or the like, as shown in FIG.
As the 2 is deployed, the curtain airbag 12 is deployed in a curtain shape on the inner side surface of the vehicle while the opening 13a is formed by pushing and expanding the end 13a of the head lining 13 by the deployment force.

In the prior art shown in FIGS. 3 and 4,
As described above, in order to facilitate the deployment of the curtain airbag 12, the headlining 13 and the window shield 11 are provided.
A mechanism for fixing the head lining 13 to the body side inner panel 7 is not provided at the closed end 13a of the head lining 13.
However, it is a free end mechanically without a supporting portion. For this reason, during long-term use of the vehicle, as shown in FIG.
The hanging portion 14 is likely to be formed in 3a, and there is a possibility that the quality of the product is reduced. In production, since the closed end 13a, which is the free end of the head lining 13, is installed and formed along the body side inner panel 7, the number of manufacturing steps increases, and quality control of the appearance finish may be difficult.

In order to solve the above-mentioned problems in molding, there may be a solution such as increasing the rigidity of the closed end 13a of the head lining 13. However, the manufacturing cost is increased and the deployment of the curtain airbag 12 is increased. May be disadvantageous.

An example of a structure in which a curtain airbag is housed and deployed near a headlining is disclosed in Japanese Patent Application Laid-Open No.
59313, but the main purpose of this structure is to provide a structure of the airbag itself so that the airbag body can be easily protected from gas pressure for various types of vehicles and various parts. This is not a specific plan to provide the bag storage / deployment unit with a stable structure. As an example of using a dual lock fastener for a vehicle, Japanese Utility Model No. 5
13813, the purpose of the present invention is to easily attach and detach the headlining of a sunroof car having a structure to be fixed with a fastener without using a tool. It is not a specific plan to provide the deployment section with a stable structure.

[0007]

As described above, when the curtain airbag is deployed, it is necessary to reduce the manufacturing cost and stabilize the quality of the structure of the headlining without impairing the deployability of the curtain airbag.

Accordingly, the present invention provides a structure in which the closed end of the headlining on the window shield side is easily fixed, the production and assembly costs of the headlining are suppressed, and the quality is stabilized without impairing the deployability of the curtain airbag. Things.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has a head lining which covers a body side inner panel and a roof panel at an upper part of a vehicle body and which is an interior part of an upper part of the vehicle body which accommodates a curtain airbag. In the vicinity of the closed end configured between the window shield and
One or more extension panels are disposed on the body side inner panel, an upper dual lock fastener is disposed on the extension panel, and a lower dual lock fastener is disposed on the head lining so as to face the upper dual lock fastener, The engagement of the upper dual lock fastener and the lower dual lock fastener ensures formation of the closed end of the head lining, and in the event of a vehicle collision or the like, the operation of deploying the curtain airbag causes the upper dual lock fastener to operate. The opening of the curtain airbag to be deployed is formed by releasing the agreement of the lower dual lock fastener and the lower dual lock fastener, and the curtain airbag is deployed as intended. Body head It is intended to invented the inning of the structure.

[0010]

FIG. 1 shows a state in which a curtain airbag 4 is housed in a section perpendicular to an axis around a vehicle body side inner panel according to an embodiment of the present invention. The upper head lining 5 is provided for the purpose of cushioning the head impact of the occupant to the body side inner panel 7 or the air conditioning duct 9 at the time of a vehicle collision or the like. The head lining 5 has a function of accommodating the curtain airbag 4 as well as a function of a cushioning material for protecting the occupant. The extension panel 3 is provided below the body side inner panel 7, and the upper dual lock fastener 1 is provided below the extension panel 3. A lower dual-lock fastener 2 is disposed on the surface of the headlining 5 at a position facing the upper dual-lock fastener 1.

In a normal use state of the vehicle, the upper dual lock fastener 1 provided on the extension panel 3 and the lower dual lock fastener 2 provided on the head lining 5 are mutually engaged with each other, so that the body side inner panel 7 The closed part of the head lining 5 is reliably formed on the window shield 11 side. Therefore, even during long-term use of the vehicle, vibration, impact,
Head lining 1 as shown in FIG.
No hanging portion 14 is formed at the end 13a of No. 3 and there is no possibility that the quality of the product is reduced. In production, as shown in FIG. 1, the end of the head lining 5 is installed and formed along the body side inner panel 7 by the engagement of the upper dual lock fastener 1 and the lower dual lock fastener 2. Since the closed part on the side of the window shield 11 can be easily formed, the quality control of the appearance finish can be easily performed without increasing the number of manufacturing steps.

At the time of a vehicle collision or the like, as shown in FIG. 2, as the curtain airbag 4 is deployed, the curtain airbag 4 releases the engagement between the upper dual lock fastener 1 and the lower dual lock fastener 2 by the deployment force. The end of the head lining 5 is pushed open to open the opening 4a.
And develops into a curtain shape on the inside surface of the vehicle. The engaging force of the upper dual lock fastener 1 and the lower dual lock fastener 2 is not large enough to withstand the deployment force of the curtain airbag 4 due to its general structure. The opening 4a is easily formed as shown in FIG. 2 without obstructing the deployment of the airbag 4.

[0013]

As described above, 1) the upper dual lock fastener provided on the extension panel and the lower dual lock fastener provided on the headlining are engaged with each other, and the head lining is closed on the window shield side of the body side inner panel. Make sure to configure. Therefore, even during long-term use of the vehicle, no drooping portion is formed at the end of the head lining due to vibration, impact, gravity, or the like, and there is no risk of deteriorating the quality of the product. 2) In production, the end portion of the head lining 5 is installed and formed along the body side inner panel in accordance with the engagement of the upper dual lock fastener and the lower dual lock fastener, thereby easily forming a closed portion of the head lining on the window shield side. Therefore, quality control of the appearance finish can be easily performed without increasing the number of manufacturing steps. 3) The power of the upper dual lock fastener and the lower dual lock fastener
Due to its general structure, it is not large enough to resist the deployment force of the curtain airbag, and therefore does not hinder the deployment of the curtain airbag. 4) Since the head lining is arranged by the upper dual lock fastener and the lower dual lock fastener, the shape of the head lining can be easily restored even after the curtain airbag is deployed.

[Brief description of the drawings]

FIG. 1 shows a state in which a curtain airbag is housed in a section perpendicular to an axis around a vehicle body side inner panel according to an embodiment of the present invention.

FIG. 2 shows a state in which a curtain airbag is deployed in a section perpendicular to an axis around a vehicle body side inner panel according to the embodiment of the present invention.

FIG. 3 shows a state in which a curtain airbag is housed in a cross section perpendicular to an axis around a vehicle body side inner panel according to the related art.

FIG. 4 shows a state in which a curtain airbag is deployed in a cross section perpendicular to an axis around a vehicle body side inner panel according to the related art.

[Explanation of symbols]

 Reference Signs List 1 upper dual lock fastener 2 lower dual lock fastener 3 extension panel 4 curtain airbag 4a opening 5 head lining 6 body side panel 7 body side inner panel 8 roof panel 9 air conditioner duct 10 weather strip 11 window shield

Claims (1)

[Claims] 1. A body near a closed end in which a head lining, which is an interior of an upper part of a vehicle body that covers a body side inner panel and a roof panel and accommodates a curtain airbag, between the body side inner panel and the roof panel and a window shield on a side surface of the vehicle body. One or more extension panels are disposed on the side inner panel, an upper dual lock fastener is disposed on the extension panel, and a lower dual lock fastener is disposed on the head lining so as to face the upper dual lock fastener. When the upper dual lock fastener and the lower dual lock fastener are engaged with each other, formation of the closed end of the head lining is ensured, and in the event of a vehicle collision or the like, the curtain airbag is deployed to operate the upper dual lock fastener and the upper dual lock fastener. An opening for the curtain airbag to be deployed when the agreement of the lower dual lock fastener is released, and the curtain airbag is deployed as intended; Headlining structure.