JP2000127879A - Automobile door structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress impact on the chest of an occupant caused by the preceding entry of a door upper part into the cabin interior by making a door lower part enter early into the cabin interior at the time of a side collision in automobile door structure with an impact beam disposed inside an outer panel along a longitudinal direction and with an impact absorbing member disposed between an inner panel and a door trim. SOLUTION: A first impact transmission box body 12 is disposed at a part, opposed to an impact absorbing member 11, of a working opening 13 of an inner panel 3, and a second impact transmission box body 14 is fixed to an impact beam 7 so as to be opposed to the first impact transmission box body 12. It is ideal to fit one side part of the second impact transmission box body 14 in a cantilever state so that the second impact transmission box body 14 is tilted inward preceding the deformation of the impact beam 7 at the time of a side collision to abut on the first impact transmission box body 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure of an automobile for protecting an occupant from an impact at the time of a side collision, and more particularly, to a door structure of an automobile in which an impact beam is arranged to more reliably protect the occupant's chest. It is about structure.

[0002]

2. Description of the Related Art Conventionally, various measures have been taken to protect an occupant in the event of a collision of an automobile. Among them, a door portion crashes while maintaining the shape of the door during a frontal collision or an offset collision. 2. Description of the Related Art In order to prevent an occupant from being trapped or pinched in a vehicle, an impact beam is provided inside an outer panel of a door along a front-rear direction. In addition, a shock absorber is known between a door inner panel and a door trim in order to absorb a shock at the time of a side collision, so that a shock is prevented from being applied to an occupant's waist. .

An example of this type of conventional door device will be described with reference to FIG. In FIG. 4, reference numeral 21 denotes a door, which comprises an outer panel 22, an inner panel 23, and a door trim 24. In a space between the outer panel 22 and the inner panel 23, a door glass and a lifting mechanism for the door glass are arranged, although not shown. And the outer panel 2
An impact beam 25 is disposed along the front-rear direction on the inside of the vehicle 2 and between the inner panel 23 and the door trim 24 at a position facing the seat of the seat S in the vehicle interior and the side of the waist of the occupant M. A shock absorber 26 is provided. 27
Is a reinforcing member at the upper part of the door 21, and 28 is a side sill at the lower part of the door 21. B is an obstacle that collides sideways with the vehicle body and collides with the lower part of the door 21 in many cases. Therefore, the obstacle shown in the figure is used during the safety test.

In the door device having the above-described structure, the obstacle B
When the vehicle collides sideways with the vehicle body as indicated by a white arrow, first, the outer panel 22 and the impact beam 25 hit the outer panel 22 below the door 21 and are deformed while absorbing collision energy from the normal position indicated by the solid line toward the vehicle interior, As shown by the imaginary line, after the impact beam 25 hits the inner panel 23, the inner panel 23 is further deformed, and the shock absorber 26 is compressed and deformed to absorb the collision energy, so that the door trim 24 becomes the seat S and the occupant M.
As a result, the impact on the occupant M is greatly reduced.

[0005] Japanese Patent Application Laid-Open No. 9-71200 discloses that
There is disclosed a structure in which a first shock absorber is provided between an inner panel and a door trim, and a second shock absorber having higher rigidity is provided outside the inner panel.

[0006]

However, in the above configuration, there is a space L between the time when the obstacle B hits the outer panel 22 of the door 21 and the time when the impact beam 25 hits the inner panel 23 and the shock absorber 26, and this space L is crushed. Until the end, no force is applied to the seat S and the waist of the occupant M via the shock absorber 26 and the door trim 24, and therefore, the movement of the occupant M to the inside of the vehicle body is delayed. On the other hand, the upper part of the door 21, which is reinforced by the reinforcing member 27 and has high rigidity, enters the interior of the vehicle cabin ahead of the impact beam 25 moving in the space L. For this reason, there is a problem that the movement of the occupant M into the vehicle interior is delayed, and the upper part of the door 21 that enters the interior of the vehicle relatively quickly may impact the chest of the occupant M.

[0007] In the above-mentioned publication, since a space for disposing the door glass and its elevating mechanism is required inside the impact beam, the impact beam hits the second shock absorber at the time of collision. Is large, and the above problem cannot be solved sufficiently.

In view of the above-mentioned conventional problems, the present invention provides an impact on the chest of an occupant due to the lower part of the door entering the interior of the vehicle early in a side collision and the upper part of the door entering the interior of the vehicle early. It is an object of the present invention to provide an automobile door structure capable of suppressing the occurrence of a vehicle.

[0009]

The vehicle door structure of the present invention comprises an outer panel, an inner panel, and a door trim, and an impact beam is arranged inside the outer panel along the front-rear direction, and between the inner panel and the door trim. In a door structure of an automobile provided with a shock absorbing member, a first shock transmitting box body is provided at a portion of a working opening of an inner panel facing the shock absorbing member, and a first shock transmitting box body is provided on an impact beam. A second shock transmission box body is fixed so as to face the door glass, and the second shock transmission box body is protruded inward as far as possible without interfering with the door glass and its elevating mechanism. At the time of a collision, the second shock transmission box body hits the first shock transmission box body prior to the impact beam, and the shock absorbing member is actuated. Lower early can be entering the vehicle compartment side can be prevented from entering the vehicle interior side door upper precedes, it can be suppressed impact to the occupant's chest.

The second shock transmission box body is fixed at one side to an impact beam and is mounted in a cantilever manner. In the event of a side collision, the second shock transmission box body is moved inward before deformation of the impact beam. So that the free end side of the second shock transmission box body contacts the first shock transmission box body before the impact beam, and the upper part of the door precedes the impact beam. Thus, it is possible to more reliably and effectively prevent the vehicle from entering the vehicle interior.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG.

In FIGS. 1 and 2, reference numeral 1 denotes a front door on the side of the vehicle body, which comprises an outer panel 2, an inner panel 3, and a door trim 4. Between the outer panel 2 and the inner panel 3, there is provided a space for accommodating the door glass 5 so that the door glass 5 can be moved up and down. Guide rails 6 for supporting the door glass 5 so as to be able to move up and down are arranged before and after the space. Elevating mechanism for door glass 5 in place between (not shown)
Are arranged.

An impact beam 7 extending in the front-rear direction along the inner surface of the outer panel 2 is disposed inside the outer panel 2. The shape of the door 1 is maintained at the time of a frontal collision or an offset collision, and the door portion crashes and the occupant gets inside the vehicle. It is configured to prevent being trapped or pinched in the device. Both ends of the impact beam 7 are attached to the mounting bracket 8.
Are fixed to the inner surfaces of the high rigidity portions at the front and rear ends of the outer panel 2. Reinforcing members 9 and 10 are integrally provided on the upper surface of the door 1 on the inner surfaces of the outer panel 2 and the inner panel 3.

[0014] Between the inner panel 3 and the door trim 4,
An impact absorbing member 11 is disposed at a position facing the seat portion of the seat S and the side of the waist portion of the occupant M in the vehicle interior. In the working opening 13 formed in the inner panel 3, a first shock transmission box body 12 is provided at a portion facing the shock absorbing member 11. The first shock transmission box body 12 includes two plate members 12a and 12
b are joined to each other to form a box-shaped space inside, and a shock from the outside of the door 1 is absorbed by the shock absorbing member 1.
1, while absorbing excessive impact energy through its own crash.

A second shock transmission box body 14 is fixed to the impact beam 7 so as to face the first shock transmission box body 12. Second shock transmission box body 1
Reference numeral 4 denotes a horizontally long substantially rectangular plate member formed with a box-shaped protrusion 15 protruding toward one side by press molding, and the lower side is formed so that the protrusion 15 protrudes toward the inner panel 3 side. The part is integrally fixed to the impact beam 7 by welding, and is attached in a cantilever manner. The protrusion 15 is formed so as to avoid the portion facing the guide rail 6, and before the second shock transmission box body 14 moves toward the inner panel 3 and hits the first shock transmission box body 12. The projection 15 and the guide rail 6 are configured so as not to interfere with each other.

A reinforcing member 16 extending to a position close to the outer panel 2 is fixed to the lower end of the guide rail 6. At the position where the guide rail 6 intersects with the impact beam 7 in a side view, the fragile portion 1 such as a notch is provided.
The guide rail 6 is formed so that the guide rail 6 is easily bent at the fragile portion 17 when the impact beam 7 hits the guide rail 6.

Reference numeral 18 denotes a side sill at the lower part of the door 1.
B is an obstacle that collides sideways with the vehicle body and collides with the lower part of the door 1 in many cases. Therefore, the obstacle shown in the figure is used during the safety test.

In the above configuration, when the obstacle B side-collides with the door 1 as shown by a white arrow in FIG. 1, first, the outer panel 2 and the impact beam 7 are pressed toward the vehicle interior, and the inner panel 3 is pressed. Start deformation towards. Then, before the impact beam 7 is largely deformed inward, the base of the second shock transmission box body 14 fixed to the impact beam 7 in a cantilever manner as shown in FIG. As a result, the second shock transmission box body 14 is tilted inward, and its free end hits the first shock transmission box body 12. Therefore, the movement of the outer panel 2 and the impact beam 7 toward the vehicle interior immediately causes the second shock transmission box body 14 and the first
Is transmitted to the shock absorber 11 through the shock transmission box body 12 of the door 1 and the door 1 is
The lower part of the vehicle enters the passenger compartment early. Thus, when the impact beam 7 is deformed into the cabin, the seat S and the waist of the occupant M are quickly moved to the cabin,
Therefore, it is possible to prevent the upper portion of the door 1 from entering the interior of the vehicle compartment in advance, and it is possible to suppress an impact on the chest of the occupant M.

In the lower part of the door 1, when the outer panel 2 is pressed by the obstacle B and deforms inward, the outer panel 2 hits the front end of the reinforcing member 16 at an early stage and presses it.
Since the lower end of the guide rail 6 is quickly pressed and the lower part of the door 1 is pressed and moved toward the interior of the vehicle, the upper part of the door 1 can be prevented from entering the interior of the interior of the vehicle in the same manner as described above. The impact on the chest of the occupant M can be suppressed.

Further, the deformed and moved impact beam 7
When the vehicle hits the guide rail 6, the guide rail 6 is bent at the fragile portion 17, the collision load is transmitted to the upper part of the door 1 via the guide rail 6, and the upper part of the door 1 is strongly pushed and moved toward the vehicle interior. , And the impact on the chest of the occupant M can be suppressed.

In the above embodiment, the second impact transmission box 14 is mounted on the impact beam 7 in a cantilever manner. However, the second impact transmission box 14 is appropriately fixed to the impact beam 7. The projection 15 of the second shock transmission box body 14 may be configured to protrude inward as far as possible without interfering with the door glass 5 and its lifting mechanism. In this case as well, at the time of a side collision, the second shock transmission box body 14 hits the first shock transmission box body 12 prior to the impact beam 7, and the lower part of the door 1 is quickly moved to the vehicle interior while the shock absorber 11 acts. It can penetrate inside.

[0022]

According to the vehicle door structure of the present invention, in the vehicle door structure having the impact beam and the shock absorbing member inside the door trim as described above, the shock absorbing member of the inner panel working opening is opposed. The first part
And the second shock transmission box body is fixed to the impact beam so as to face the first shock transmission box body. By projecting as far inward as possible without interfering with the mechanism, the second shock transmission box body hits the first shock transmission box body prior to the impact beam at the time of a side collision, and the shock absorber acts. The lower part of the door can be made to enter the interior of the vehicle at an early stage, the upper part of the door can be prevented from entering the interior of the interior of the vehicle earlier, and the impact on the occupant's chest can be suppressed.

Further, the second shock transmission box body is fixed at one side to the impact beam and mounted in a cantilever manner, and the second shock transmission box body is preceded when the inside of the impact beam is deformed at the time of a side collision. Is tilted inward to come into contact with the first shock transmission box body, the free end side of the second shock transmission box body hits the first shock transmission box body prior to the impact beam, and the door can be more securely assured. It is possible to prevent the upper portion from entering the interior of the vehicle compartment in advance.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a door structure according to an embodiment of the present invention.

FIG. 2 is a side view of the embodiment with an outer panel removed.

FIG. 3 is a longitudinal sectional view showing a state at the time of a side collision in the embodiment.

FIG. 4 is a longitudinal sectional view of a conventional automobile door structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front door 2 Outer panel 3 Inner panel 4 Door trim 7 Impact beam 11 Shock absorbing member 12 First shock transmission box 13 Working opening 14 Second shock transmission box

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasufumi Egashira 2-1-1 Taoyuan, Ikeda-shi, Osaka Inside Daihatsu Industry Co., Ltd. (72) Shinsuke Hori 2-1-1 Taoyuan, Ikeda-shi, Osaka Daihatsu Industry Co., Ltd.

Claims (2)

[Claims] 1. An automobile door structure comprising an outer panel, an inner panel, and a door trim, an impact beam disposed inside the outer panel along a front-rear direction, and an impact absorbing member disposed between the inner panel and the door trim.
A first shock transmission box body is disposed at a portion of the inner panel working opening facing the shock absorbing member, and a second impact transmission box body is provided on the impact beam so as to face the first shock transmission box body.
A door structure for an automobile, wherein the shock transmission box body is fixed. 2. The second shock transmission box body is fixed at one side to an impact beam and mounted in a cantilever manner, and the second shock transmission box body is inwardly mounted prior to deformation of the impact beam in a side collision. 2. The automobile door structure according to claim 1, wherein the door structure is tilted to abut against the first shock transmission box body.