JPH061145A - Door intrusion preventive structure for automobile - Google Patents

Abstract

PURPOSE:To ensure the prevention of door intrusion into a car room side at the time of side surface collision and at the same time increase the performance of impact absorption without damaging a good appearance and the quality of getting on and off the car room in the state of door opening. CONSTITUTION:While each door 19 composed of an outer panel 21 and an inner panel 22 is openably/closably fitted to door opening portions 11, 12 whose lower end edge portions are defined by a side sill 2 that is formed on a car body side surface and extends in a car body longitudinal direction, impact support portions 13, 14 are formed at corner portions that are nearer to the car body rear part and at the lower end edge portions of the door opening portions 11, 12, in the state of being continuous to the side sill 2 and being extended from the side sill 2 to the inner parts of the door opening portions 11, 12. An impact bar 30 and an impact absorbing portion 32 that is at a position facing impact support portions 13, 14 in the state of door closing and possesses moderate elasticity in a door thickness direction, are provided between the outer panel 21 and inner panel 22 of the door 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing a door from entering a passenger compartment when a side collision occurs in the vehicle.

[0002]

2. Description of the Related Art In recent years, various measures have been taken in automobiles to enhance the occupant protection performance in the event of a collision.
Various means have been proposed to prevent the door from entering the vehicle compartment side in the event of a side collision. For example, actual fair 3-3240
According to Japanese Patent Laid-Open No. 7-74, a pin protruding toward the vehicle body is provided at an end portion of the door opposite to the hinge, and when the door is closed, the pin on the door side is fitted into a hole on the vehicle body side for connection. It is disclosed.

In this type, the door is prevented from entering the passenger compartment by overlapping the door peripheral portion with the door opening in the portion other than the hinge end of the door in the direction outside the passenger compartment. However, since the overlapping width of the two cannot be made too large from the viewpoint of securing the opening area, etc., the pin is provided as an auxiliary means for further increasing the certainty of intrusion prevention. .

On the other hand, Japanese Utility Model Publication No. 3-23370 discloses that
The viewpoint is slightly changed from the above-mentioned publicly known example, and the deformation of the door itself toward the passenger compartment is not suppressed at the time of a side collision.
It is disclosed that an impact bar extending in the width direction is arranged inside the door to increase the rigidity in the thickness direction of the door.

[0005]

However, in the former case, although the effect of preventing the intrusion of the door into the passenger compartment side at the time of a side collision can be obtained by the engaging action of the pin, the pin protrudes to the end portion of the door. Therefore, the appearance of the door in the open state is poor, and in the latter case, the deformation due to the side collision of the door can be suppressed, but in order to improve the performance of preventing the door from entering the vehicle interior side, the overlapping width between the door and the vehicle body is increased. There is a problem in that the entry / exit performance to / from the passenger compartment is hindered when the vehicle is expanded.

In view of the above, the present invention can reliably prevent the door from entering the passenger compartment side at the time of a side collision and enhance the shock absorbing performance without impairing the appearance in the door open state and the ability to get in and out of the passenger compartment. It was made as a proposal for a car door intrusion prevention structure.

[0007]

According to the present invention, as a concrete means for solving the above-mentioned problems, a door opening portion whose lower end edge is defined by a side sill formed on a side surface of a vehicle body and extending in a vehicle front-rear direction is provided. , A door composed of an outer panel and an inner panel is attached so as to be openable and closable, and at the corner of the lower edge of the door opening toward the rear of the vehicle body, continuously from the side sill toward the inside of the door opening. Form the impact support part in the extended state, and further,
Between the outer panel and the inner panel of the door, an impact bar extending in the front-rear direction of the vehicle body, and an impact absorbing portion having a proper elasticity in the door thickness direction at a position corresponding to the impact supporting portion in the door closed state. It is characterized by the provision of.

[0008]

According to the present invention, the following operation can be obtained with this structure. That is, in the door closed state, the shock absorbing portion arranged inside the door corresponds to the shock supporting portion formed on the door opening side of the vehicle body. Therefore, when an impact force is applied to the door due to the occurrence of a side impact and the door is pressed toward the vehicle compartment, the impact absorption portion comes into contact with the impact support portion via the inner panel of the door, thereby absorbing the impact. The portion is supported by the impact support portion while absorbing the impact force due to its elasticity, thereby suppressing the intrusion of the door into the vehicle compartment. Further, in this case, since the impact supporting portion is formed continuously with the side sill which is the strength member of the vehicle body, the impact force is smoothly dispersed from the impact absorbing portion to the side sill side through the impact supporting portion. As a result, the supporting performance for the impact force is enhanced.

Further, the impact bar provided inside the door also suppresses the deformation of the door itself toward the passenger compartment, but the fact that the deformation of the door is suppressed in this way is caused by the side impact deformation. That means that the reduction of the overlapping width between the door peripheral portion and the door opening is suppressed,
As a result, the function of preventing the door from entering the passenger compartment is promoted.

On the other hand, the impact support portion formed on the vehicle body side is provided at a corner portion of the lower edge of the door opening near the rear of the vehicle body. Since the corners are originally arranged, they hardly contribute to the occupant's entry / exitability. Therefore, the impact support section is formed as large as possible while ensuring the occupant's entry / exitability satisfactorily. It is possible to increase the range of overlapping of the support portion and the door in the vehicle interior / outside direction, and to enhance the door intrusion prevention action by the impact support portion and the impact absorption portion.

Further, in this case, since the impact bar and the impact absorbing portion are both arranged inside the door, the appearance of the door in this state is not affected at all.

[0012]

Therefore, according to the vehicle door intrusion prevention structure of the present invention, the impact absorbing portion provided inside the door and the impact supporting portion provided at the position of the door opening where the passenger's getting on / off performance is not affected. Thus, it is possible to effectively prevent the door from entering the passenger compartment side at the time of a side collision without impairing the occupant's entry / exitability and without impairing the appearance in the door open state. Since the impact force can be efficiently absorbed by elasticity, and the impact force can be smoothly dispersed to the side sill side via the impact support portion,
The shock absorption performance of the entire vehicle body including the door is improved,
The effect on the occupant is reduced by that much.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The vehicle door intrusion prevention structure of the present invention will be described below in detail based on the embodiments. FIG. 1 is a side view of an automobile body equipped with the door intrusion prevention structure according to the embodiment of the present invention. 2 and FIG. 2 show the main parts of the vehicle body 1 as viewed from the passenger compartment side. In each of the drawings, reference numeral 2 designates both lower end portions of the vehicle body 1 in the vehicle longitudinal direction. The side pillars 3, 3 are center pillars that continuously rise from the middle position of the side sill 2 and rise upward from here, 4 are front pillars, 5 are rear pillars, and 5 are rear pillars.
The lower end of the side sill 2 is connected to the side sill 2 via the tire house 6. Further, on the side surface 1a of the vehicle body 1, two front and rear door openings 11, which are defined by the pillars 3, 4, 5 in the vehicle front-rear direction and whose lower end edges are defined by the side sills 2, 12 are formed. A door 19, which will be described later, is attached to each of the door openings 11 and 12.

Further, at the corners 11a, 12a on the rear side of the vehicle body at the lower edge portions of the door openings 11, 12, as shown in FIGS. 1 and 2, the lower ends of the side sill 2 and the center pillar 3 are provided. Front door opening 11
A substantially triangular rib-shaped impact support portion 13 extending inward of
The side sill 2 and the impact support portion 14 that extends over the lower end of the tire house 6 and extends inward of the rear door opening 12 are formed in a substantially triangular rib shape.

Further, as shown in FIG. 4, the impact support portions 13 and 14 are formed by locally bulging the upper surface side portion of the side sill 2 upward. Further, the size of the impact support portions 13 and 14 is the same as that of the door opening portions 11 and
A front seat 16 and a rear seat 17 arranged in the vehicle compartment so as to correspond to the rear corners 11a and 12a of the vehicle 12.
The size is set so that it does not project forward or upward. That is, the occupant can open the door openings 11,
It is shaped and sized so that it does not get in the way when getting on and off from 12.

The pair of left and right side sills 2, 2 are
As shown in FIG. 2, a cross member 8 extending in the vehicle width direction,
9 and the floor panel 7 are connected.

The door will be described by taking the door 19 mounted on the front door opening 11 side as an example. As shown in FIGS. 3 and 4, the door is composed of an outer panel 21 and an inner panel 22. A sash 26 is attached to the upper end of the door body 20. Further, inside the door body 20, a window glass 24 is arranged in a state of being supported by a window regulator 25 so as to be able to move up and down, and an impact bar 30 described later is arranged.

The impact bar 30 is formed by pressing a plurality of beads 34, 34, ... Which extend in the longitudinal direction on a plate body having a length close to the width dimension of the door body 20 (dimension in the vehicle longitudinal direction). Is configured. Further, an extension portion 31 continuously extending downward is integrally formed on one end 30a side of the impact bar 30, and the extension portion 31 is provided with the extension portion 31 from one side thereof. The shock absorbing portion 32 is formed by bulging in a substantially rectangular shape toward the other side.

The impact bar 30 has one end 30a side on which the impact absorbing portion 32 is formed, located on the rear side of the vehicle body, and the other end 30b on the front side of the vehicle body, and the impact absorbing portion 32 has It is arranged inside the door body 20 in a state in which the protruding direction is directed to the inner panel 22 side. The impact bar 30 has both ends 30a and 30b at the outer panel 21.
By being supported by the peripheral edge fixing portion of the inner panel 22, it is fixed to the door body 20 side.

In the mounted state of the impact bar 30, as shown in FIG. 4, the top surface 3 of the impact absorbing portion 32 is provided.
2a is located close to the inner surface of the inner panel 22, and when the door 19 is attached to the front side door opening 11 of the vehicle body 1 and is closed, the impact absorbing portion 32 passes through the outer panel 21. It corresponds to the impact support portion 13. The peripheral portion 19a other than the upper end side of the door body 20 is overlapped with the side sill 2 or the pillars 3, 4, and 5.

In FIG. 4, reference numeral 23 is a door trim of the door 19, 27 is a door hinge, 41 is a mat 41 and 42 laid on the upper surface of the floor panel 7, and 41 is a mat 41.
It is a mat holder 42 that holds down the end of the.

When a side collision occurs in an automobile having such a vehicle body structure and a door structure, a large impact force is input to the door 19 from the outside of the vehicle. When the impact force due to the side collision is input to the door 19, the outer panel 21 of the door 19 is first deformed toward the vehicle compartment,
Since the impact bar 30 is arranged on the back side of the outer panel 21, the impact force is supported by the impact bar 30, and the deformation of the outer panel 21 can be suppressed to a relatively small scale. Therefore, it is possible to prevent the deformation of the outer panel 21 from spreading to the inner panel 22 side and the inner panel 22 deforming toward the passenger compartment.

On the other hand, the entry of the door 19 into the passenger compartment side is basically due to the fact that its pivotal support is hinged to the vehicle body and the joining force is high, and the peripheral edge of the door body 20. 19a is blocked by the fact that it overlaps with the side sill 2 and the pillars 3, 4, 5 at the peripheral edge of the front door opening 11, but in reality, since the range of the above-mentioned overlapped portion is small, In some cases, the door body 20
As described above, with the deformation, the whole is pulled to the hinge coupling side, and the polymerization range is narrowed.

However, in this embodiment,
When the door main body 20 enters the vehicle compartment side by a predetermined amount or more, the impact absorbing portion 32 comes into contact with the impact support portion 13 on the vehicle body 1 side to reliably prevent further intrusion. That is, since the impact support portion 13 is formed so as to extend inward of the front door opening 11,
Even if the peripheral portion 19a of the door body 20 is deformed so that the overlapping range of the peripheral edge portion 19a with the front door opening 11 side is narrowed, the engagement state between the impact support portion 13 and the impact absorbing portion 32 is not affected. Since it is maintained as it is, the entry of the door 19 into the vehicle compartment is reliably prevented.

Further, in this case, the shock absorbing portion 32 is formed by bulging the plate, and when a load is applied to the plate, the shock absorbing portion 32 is appropriately crushed and deformed (that is, it is deformed). It can be said that the impact absorbing portion 32 has an appropriate elasticity in the door thickness direction). Therefore, the crushing deformation of the impact absorbing portion 32 effectively absorbs and alleviates the impact force, and the impact of the impact force on the entire vehicle body is minimized. That is, the impact absorbing portion 32 and the impact supporting portion 13 simultaneously achieve the function of preventing the door 19 from entering the vehicle interior side and the ability of absorbing and relaxing the impact force.

Further, in this embodiment, since the impact absorbing portion 32 is formed integrally with the impact bar 30, not only the load exerted on the impact absorbing portion 32 but also the load exerted on the impact bar 30 at the same time. Impact support 1
Thus, the load supporting performance of the vehicle body 1 as a whole is improved by being dispersedly supported on the side sill 2 side via the shaft 3.

Further, since the impact support portion 13 is formed at the rear corner portion 11a of the front door opening 11, the side impact impact force can be favorably supported. That is, the front portion of the vehicle body of the door 19 is firmly coupled to the vehicle body 1 by the door hinges 27, 27, but the rear portion of the vehicle body is only coupled by a door lock (not shown) and its coupling force (that is, The binding force is low. Therefore, the impact absorbing portion 32 is formed in the portion having the low coupling force, and the impact absorbing portion 32 is supported by the vehicle body 1 side through the impact supporting portion 13 to compensate for the low coupling force, and the door 19 as a whole is high. The support performance is secured.

Further, when the impact support portion 13 is provided at the rear corner 11a of the front door opening 11 as described above, this portion originally has no effect on the boarding / alighting performance. Despite the formation of the support portion 13, the occupant's entry / exit performance is favorably maintained.

Further, since the impact absorbing portion 32 is arranged inside the door body 20 and is not exposed to the outside, the appearance in the opened state of the door is maintained well, and the commercial value is increased accordingly. It can also contribute to improvement.

In this embodiment, the impact absorbing portion 32 is formed integrally with the impact bar 30, but in another embodiment, it can be formed separately. Further, the impact absorbing portion 32 is capable of arbitrarily setting impact force supporting performance and absorbing performance by, for example, appropriately forming small holes and slits and adjusting the rigidity thereof. . Further, as the impact absorbing portion 32, in addition to the plate formed by bulging as in this embodiment, for example, it may be formed of a rubber body having an appropriate elasticity, or a spring having an appropriate spring force. It is also possible to use a damper or the like. Further, a slit, a bead, etc. may be formed in the vehicle width direction surface portion of the door inner panel 22 corresponding to the shock absorbing portion 32 so that the door inner panel 22 and the shock absorbing portion 32 cooperate to absorb the shock. good.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle body side portion of an automobile equipped with a door intrusion prevention structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of an essential part of the vehicle body side portion shown in FIG.

3 is a partially cutaway perspective view of a door attached to a door opening of the vehicle body of FIG.

FIG. 4 is a longitudinal sectional view of an essential part of a state in which the IV-IV part of FIG. 2 and the IV-IV part of FIG. 3 are combined.

[Explanation of symbols]

1 is a vehicle body, 2 is a side sill, 3 is a center pillar, 4 is a front pillar, 5 is a rear pillar, 6 is a tire house,
7 is a floor panel, 11 is a front door opening, 12
Is a rear door opening, 13 and 14 are impact supports, 16
Is a front seat, 17 is a rear seat, 19 is a door, 2
0 is a door body, 21 is an outer panel, 22 is an inner panel, 23 is a door trim, 24 is a window glass, 25
Is a window regulator, 26 is a sash, 27 is a door hinge, 30 is an impact bar, 31 is an extending part, 32 is an impact absorbing part, 34 is a bead, 41 is a mat, and 42 is a mat holder.

Claims (1)

[Claims] 1. A door constituted by an outer panel and an inner panel is openably and closably attached to a door opening defined by a side sill formed on a side surface of a vehicle body and extending in a vehicle front-rear direction to define a lower end edge portion thereof. An impact support is formed at a corner of the lower edge of the door opening near the rear of the vehicle body in a state of being continuously extended from the side sill and extending inward of the door opening. Between the panel and the inner panel, an impact bar extending in the front-rear direction of the vehicle body and an impact absorbing portion having a proper elasticity in the door thickness direction at a position corresponding to the impact supporting portion when the door is closed are provided. A car door intrusion prevention structure characterized by: