JP2017177908A - Airbag apparatus for motorcycle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an airbag door that is easy to manufacture, requires no tear processing and is improved in design of the product.SOLUTION: An airbag apparatus for a motorcycle comprises an airbag device provided at a front part of the motorcycle, an airbag door provided in the front face of the airbag device, a design panel provided on the front face side of the airbag door and formed to cover the periphery of the airbag door, and a decorative film provided on the surface of the airbag door. At one end side of the airbag door, a tear line is formed for deploying the airbag door, and at the other end side, a hinge part is formed for deploying the airbag door. At least a part of the tear line abuts on the design panel, and on the design panel, an acute angled breaking portion is formed for breaking the tear line when the airbag is deployed.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an airbag device mounted on a motorcycle.

Conventionally, various techniques for protecting an occupant by mounting an airbag device on a motorcycle are known. For example, in a motorcycle, when a forward collision occurs, a technique is known in which an airbag accommodated in a case attached to a vehicle body frame is inflated and inflated by inflation gas, thereby restraining an occupant (for example, , See Patent Document 1).
In such an airbag device, the airbag door is deployed along a tear line formed on the back surface of the airbag door that has been widely used conventionally, and the bag protects the occupant. As for the surface side, what has the surface design by a shaping | molding process was common.

Japanese Patent Laid-Open No. 2005-53275

There is a demand not only for coloring a molded resin during molding, and for improving not only the texture provided on the surface but also improving the design of the product, for example, providing a decorative film.
However, when this decorative film or the like is provided on the front side of the airbag door, in order to ensure the deployment performance of the airbag door, further tear processing is usually performed on the back side of the decorative film, and this film is attached to the airbag door. Therefore, there is a problem that the cost is increased.
SUMMARY OF THE INVENTION An object of the present invention is to obtain an airbag door that is easy to manufacture and does not require tearing to improve the design of the product.

  The present invention is formed so as to cover an air bag door and an air bag device provided at a front portion of the motorcycle, an air bag door provided at a front surface of the air bag device, and a front surface side of the air bag door. A design panel, a decorative film provided on the surface of the airbag door, a tear line for deploying the airbag door is formed on one end side of the airbag door, and the airbag door is deployed on the other end side. The hinge portion is formed, at least a part of the tear line is in contact with the design panel, and the design panel is formed with an acutely broken portion for breaking the tear line when the airbag is deployed. Airbag device for motorcycle

  By the structure which has said structure, an airbag door is fractured | ruptured by the to-be-talked part with the decorating film provided in the surface, and an airbag apparatus can be expanded reliably.

  The alignment is provided on the front surface side of the airbag door, and a to-be-broken portion is provided along the tear line.

  With the above configuration, the airbag can be easily broken along the tear line.

  The part to be broken is provided with a metal insert.

  With the above configuration, the airbag can be more easily broken along the tear line.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the design property of an airbag door, an airbag apparatus can be provided cheaply.

1 is a schematic view showing a motorcycle having an airbag device according to an embodiment of the present invention. It is a mimetic diagram showing an airbag device concerning one example of the present invention. It is AA sectional drawing of FIG. 2 of the airbag apparatus which concerns on one Example of this invention. It is sectional drawing which shows the expansion | deployment state of FIG. 3 of the airbag apparatus which concerns on one Example of this invention. It is a schematic diagram which shows the structure of the to-be-broken part which concerns on one Example of this invention.

Hereinafter, the configuration of the present invention will be described in detail based on an example of an embodiment shown in the drawings. 1 to 4 show an embodiment of an airbag apparatus according to the present invention.
A motorcycle 100 shown in FIG. 1 includes a vehicle body constituting portion 101 constituted by an engine, a main frame, etc., a seat 103 on which an occupant R can sit and sit, a steering operation handle 104 extending in the left-right direction of the vehicle body, It is configured as a motorcycle mainly composed of front wheels 111, rear wheels 112, and the like.

  A region on the front side of the occupant R above the vehicle body constituting portion 101 of the motorcycle 100 is defined as an occupant protection region 140 when the motorcycle 100 causes a forward collision. In the embodiment of the present invention, the “front collision” widely includes a form in which the motorcycle 100 collides with a front collision object (not shown for convenience). Further, the “occupant protection area 140” in the present embodiment extends in the forward movement direction of the occupant R when the occupant R attempts to move toward the front of the motorcycle 100 by the kinetic energy at the time of a frontal collision. It is defined as a space for restraining and protecting the occupant R who is about to be thrown away in front of the motorcycle 100.

  An air bag device 120 and various meters, switches, and the like are provided on the front portion 102 of the vehicle body constituting portion 101 on the front side of the vehicle body. In particular, the airbag device 120 is disposed so as to face the occupant protection region 140 in the vicinity of the handle 104. In other words, in the present embodiment, the airbag device 120 is disposed such that the protruding (deployed and inflated) direction of the airbag 121 is directed toward the front upper side of the occupant R.

  As shown in FIGS. 2, 3, and 4, a design panel 20 and an airbag door 10 are provided on the front surface (rear side of the vehicle) of the airbag device 120. The airbag door 10 is covered with a design panel 20 and is expanded upward with the hinge portion 12 on the upper end side at the center when the airbag is activated. The airbag door 10 is formed with a substantially U-shaped tear line 14 on both sides from the lower end side in a plan view. The tear line 14 is provided on the front side of the airbag door 10, and the tear line 14 is covered with the design panel 20. Therefore, the tear line 14 cannot be seen from the passenger. The design panel 20 is formed with an acute angle portion 25 as a fractured portion in accordance with the tear line 14 having a V-shaped cross section. The design panel 20 includes a base material 40 and a decorative film 30 provided on the front side of the base material 40 for insert molding.

  An airbag device 120 is provided on the back surface side (front of the vehicle) of the airbag door 10, and the airbag 121 is inflated and deployed in the occupant protection region 140 when the airbag is activated. In this inflation and deployment, the airbag door 10 is opened upward around the hinge portion 12. At this time, the tear line 14 formed in a substantially U shape on the lower end portion and both sides is pressed and broken by the acute angle portion 25 as the portion to be broken by the inflation of the airbag 121. The airbag 121 is deployed while pressing the airbag door 10 upward, and further deployed in the passenger protection area 140.

  As various shapes of the acute angle portion 25 as the fractured portion in FIG. 5, the shape can be selected according to the use, capacity and the like from the following. The acute angle portion 25 shown in (a) has a shape having as little resistance as possible when the upper end corner portion is 85 ° and the airbag door is broken and deployed. The acute angle portion 25 shown in (b) has a configuration in which the upper end corner portion is 65 ° and the tear line is difficult to see from the occupant. The acute angle portion 25 shown in (c) has a shape in which the acute angle tip portion has a saw-tooth shape, and pressure applied to the decorative film 30 concentrates on the tip portion and is easily broken. The acute angle portion 25 shown in (d) has a configuration in which a metal insert 27 is insert-molded at the tip and the decorative film 30 is easily broken.

  In the present embodiment, the hinge portion 12 is formed on the upper end side and the substantially U-shaped tear line 14 is formed on both sides from the lower end side. However, the hinge portion 12 may be formed on the lower end side. Moreover, although the acute angle part 25 as a to-be-broken part was formed in the shape and range of the tear line 14, the structure which forms the acute angle part 25 only in a lower end side or a part of lower end side may be sufficient.

  In the present embodiment, the decorative film 30 is not subjected to processing for facilitating breakage, but may be subjected to processing for promoting breakage (for example, laser processing). In this case, a configuration in which a simple process is performed on a part that is the starting point of the fracture may be performed, or the entire range of the tear line 14 may be performed. Moreover, you may process only in the direction which is hard to fracture | rupture in either a horizontal direction or the vertical direction using the direction which the decorative film 30 is easy to fracture | rupture.

  Furthermore, the structure which forms the acute angle part 25 only in the direction where the decorating film 30 is hard to fracture | rupture may be sufficient.

  Although the present embodiment is applied to an airbag door of a motorcycle, a similar configuration may be provided for a passenger car or the like, and it can also be applied to an airbag apparatus such as an aircraft.

DESCRIPTION OF SYMBOLS 10 Airbag door 12 Hinge part 14 Tear line 20 Design panel 25 Acute angle part (part to be broken)
27 Metal Insert 30 Decorative Film 40 Base Material 100 Motorcycle 101 Body Structure 102 Front Part 103 Seat 104 Handle 111 Front Wheel 112 Rear Wheel 120 Airbag Device 121 Airbag 140 Crew Protection Area R Crew

Claims (3)

An airbag device provided at a front portion of the motorcycle;
An airbag door provided on the front surface of the airbag device;
A design panel provided on the front side of the airbag door and formed to cover the periphery of the airbag door;
A decorative film provided on the surface of the airbag door;
A tear line for deploying the airbag door is formed on one end side of the airbag door, a hinge portion for deploying the airbag door is formed on the other end side, and at least a part of the tear line is An airbag device for a motorcycle, wherein the airbag device is in contact with the design panel, and the design panel is formed with an acute broken portion for breaking the tear line when the airbag is deployed.   The airbag apparatus for a motorcycle according to claim 1, wherein the tear line is provided on a surface side of the airbag door, and the to-be-broken portion is provided along the tear line.   The airbag apparatus for a motorcycle according to claim 1 or 2, wherein the portion to be broken is provided with a metal insert.