KR100206505B1 - Car center pillar structure - Google Patents

Abstract

Even in the case of a side collision, the center pillar reinforcement structure of the automobile which can minimize the intrusion into the vehicle by the buckling of the center pillar is provided.

Between the door lower hinge attachment part 23 and the door upper hinge attachment part 21, the weak part P1, P2 which first buckles in the center pillar 20 with respect to a side load is provided.

Further, in order to reduce the intrusion into the vehicle more, the weak part P1 is provided between the door lower hinge attaching part 23 and the door striker attaching part 25.

Description

Center pillar structure of automobile

1 is a schematic illustration of the reinforcement state showing one embodiment of the present invention.

2 is a cross-sectional view taken along line X-X in FIG.

3 is a cross-sectional view taken along line Y-Y of FIG.

4 is a schematic explanatory view similar to FIG.

5 is a schematic diagram showing a state of bending deformation of the center pillar during lateral collision.

6 is a partial perspective view showing the body pillars near the center pillar.

* Explanation of symbols for main parts of the drawings

1: front door 3: rear door

5: room 7: side loop

20: center pillar 21: door upper hinge attachment portion

23: door lower hinge attachment portion 25: door striker attachment portion

WL: Westline P1, P2: Vulnerable

[Industrial use]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center pillar structure of a vehicle that can reduce intrusion into a vehicle during side collision of the vehicle.

[Private Technology]

Conventionally, the center pillar is made by making the upper side thinner than the boundary between the door panel and the door glass, the so-called westline, and the lower side in order to secure the vision of the driver and the passenger. That is, the cross-sectional change is severe at the westline position.

In addition, since the seat belt is mounted on the top of the center pillar and the door is mounted on the bottom of the center pillar, each mounting portion is reinforced in addition to the outer panel and the inner panel so that bending deformation does not occur even when a corresponding stress is applied. .

In addition, there exist some of this kind as described in Unexamined-Japanese-Patent No. 63-165273, for example.

[Problem trying to solve the invention]

However, in the related art, the reinforcement of the seat belt train force, the upper door hinge force, the door striker patch, the door lower hinge force, or the like has been performed separately or several in one or all in one. Therefore, in the side impact, the position of the westline WL, which is the upper side of the upper door hinge with large cross-sectional change, is bent into the car and enters the position of the WL (figure 5).

For this reason, even if the positions of the roof rail and the seal are maintained, the position of the westline close to the center of the top and bottom of the center pillar is bent and deformed, and the vehicle is invading into the vehicle.

Accordingly, an object of the present invention is to provide a center pillar structure of an automobile which can minimize the intrusion into the vehicle due to the bending deformation of the center pillar even when a side impact is received.

[Means for solving the problem]

In order to achieve this object, the present invention has a configuration in which the center pillar is first set at a position between the door lower hinge attaching portion and the door upper hinge attaching portion of the center pillar with respect to the lateral load.

[Action]

With this configuration, when a lateral load is applied to the side of the car in a collision or the like, the front door and the rear door are forced to bend, and the striker on which the front door is locked is pulled into the car, and the upper part of the door of the rear door is pulled. The hinge and the lower door hinge slide into the car. At this time, the weak part is provided between the upper door hinge part and the lower door hinge part, and the weak part is bent and deformed by applying a load to the part. At this time, the seal and the side loop foil will be described in a state where there is no deformation and no movement. It intrudes into the vehicle to the point of intersection of the radius from the coarse seal to the weak part and the radius from the side loop rail to the weak part. Since this weak part is generally lower and one radius is smaller than about half the radius of the conventional center pillar, the penetration amount is also small.

EXAMPLE

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated based on drawing.

1 to 6 show one embodiment of the present invention.

First, the configuration will be described. 6 shows a state in which the front door 1 and the rear door 3 on the left side of the body of the vehicle are removed. The position of the body corresponding to the two-dot chain line at the top of the door 3 is generally referred to as the waistline WL.

The center pillar 20 is connected to support between the seal 5 and the side roof rails 7, and the rear door 3 is attached to the upper hinge hinge portion 21 and the lower rear hinge hinge portion ( 23 is freely attached to the opening and closing, and the rear end of the front door 1 is fixed to the striker attachment portion 25.

1 shows an example of the reinforcing structure of the center pillar 20, and is reinforced at a position indicated by diagonal lines. The reinforcement of the upper part including the door upper hinge attaching part 21 is integrally comprised from the upper position which attaches the seat belt not shown to the lower part than the upper door hinge attaching part 21.

The seat belt mounting portion has a cross section as shown in FIG. 2 and is reinforced with a seat belt train force 31 between the center pillar outer panel 27 and the center pillar inner panel 29. 33 is a seat belt anchor.

The striker attachment portion 25 is provided with a striker patch 35 and is reinforced, and at the same time installs a part overlapped with the striker patch 35 and the seatbelt train force 31, but most of the weak parts (P2) are separated. It is.

As shown in FIG. 3, the door lower hinge attaching part 23 contains the door lower hinge rain force 37 between the center pillar outer panel 27 and the center pillar inner panel 29. As shown in FIG. It is reinforced.

Therefore, the continuity of reinforcement is removed between the striker patch 35 and the door lower hinge lane force 37, and the excitation portion P is set to be weak.

However, the rear door 3 with rigidity is connected between them, and a lack of general rigidity does not arise. In addition, although the weak parts P1 and P2 are generally provided, either may be provided.

The opening 39 (refer to FIG. 3) provided in the center pillar inner panel 29 is a hinged attachment hole of the hinge attached to the center pillar outer panel 27. 41 is a hole for increasing fragility along with weight reduction, such as a reducing hole, and on any one or both of the center pillar outer panel 27 and the inner panel 29, and at any one of the weak parts P1 and P2. Or install or not install.

The weak parts P1 and P2 can adjust the securing of rigidity by the reinforcement method or the installation method of the hole 41.

Although any may be weakened, when the weak part P1 is weaker, it will bend at a lower position, and the penetration amount of the bent deformation center pillar will be less.

In addition, since the strength of the seal 5 is relatively weakened by the reinforcement of the center pillar 20, the seal braze 43 is provided and reinforced in this example.

Another reinforcement example is shown in FIG. The seatbelt train force of this example is integrated up to the periphery of the upper door hinge attachment portion 21, but the reinforcement is weakened by the example shown in FIG. 1, and the striker patch 35 is also separated. The striker patch 35 is larger than the case of FIG. 1 in order to further reinforce the striker attachment portion 25 alone.

The lower door hinge force 37 extends up to the thread 5 so as to be reinforced, and the seal braze 43 shown in FIG. 1 is omitted.

Thus, the weak parts P1 and P2 are positioned between the lower door hinge attachment part 23 and the striker attachment part 25, respectively, between the striker attachment part 25 and the upper door hinge attachment part 21, respectively. It is installed so that it may bend and deform before another part of the center pillar 20. The hole 41 is selectively provided in the weak parts P1 and P2 in order to promote vulnerability as mentioned above.

Next, the operation will be described.

5 is a schematic diagram when the lateral load F acts due to a lateral collision or the like.

When the lateral load F is applied, the weak part between the lower door hinge attachment part 23 and the upper door hinge attachment part 21 when the positions of the seal 5 and the side roof rail 7 are not changed ( When bending deformation occurs in P1), the center pillar deforms as indicated by the dashed two-dot chain line. That is, the radius 5 to the weak part P1 and the side loop rail 7 are pushed to the intersection point P1 'up to the weak part P1 by the point of the seal 5, and the upper side is more right than the weak part P1. In the vertical direction from the inclined downwards, the lower side is falling inclined from the vertical direction to the upper left. The weak part P2 is also the same as the weak part P1.

On the other hand, if the position of the westline WL is weak as in the related art, the radius to the westline WL by the point of the seal 5 and the radius to the westline WL by the point of the side loop rail 7 are pointed. It is pushed to the intersection with and deformed as indicated by the dashed dashed line (the lower part overlaps the dashed dashed line). The position of the Westline (WL) that has been inflated outward is bent and invaded into the vehicle (WL '). In this way, not only the intrusion into the vehicle is different, but also in the case of the present invention, since the bending of the westline WL portion does not occur and occurs in the weak portion P1, the upper half shown in a straight line by the two-dot chain line is actually Since is inflated outwards, the space in the car is more secure. If it occurs in the weak part P2, it enters the vehicle more than P1 'but does not reach the point WL'.

[effect]

As described above, the invention according to claim 1 provides a closed structure between the rear door and the hinged part of the center pillar by actively installing the weak part between the lower door hinge part and the upper door hinge part. Normal stiffness can be secured and the side pillars can be bent and deformed near the center pillar in the event of side impact, thereby minimizing the intrusion into the vehicle.

Therefore, it is difficult to affect the passenger's head as well as the body because it is bent under the center pillar.

In the invention according to claim 2, since the weak part is further provided between the door lower hinge part and the striker part, the bending deformation position is lowered, so that the intrusion into the vehicle of the center pillar can be made less. .

Claims (2)

A center pillar structure for lateral impulse of a vehicle having a rear door attached to a door lower hinge attaching portion and a door upper hinge attaching portion of a center pillar, wherein the door lower hinge attaching portion and the upper upper hinge attaching portion of the center pillar are provided. The center pillar structure of a vehicle characterized in that a weak portion for bending the center pillar is first bent and deformed with respect to the side load at a position between. The center pillar structure of a vehicle according to claim 1, wherein the weak part is provided between the door lower hinge attaching part and the door striker attaching part.