JP3173539B2 - Center pillar reinforcement structure for automobiles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a center pillar reinforcing structure for an automobile, which can reduce entry into a room in a side collision of the automobile.

[0002]

2. Description of the Related Art Conventionally, a center pillar is made thinner above a boundary between a door panel and a door glass, that is, a so-called waistline, and thicker below, in order to secure a view of an occupant and a passenger. That is, the cross-sectional change is remarkable at the waistline position.

[0003] In addition, since the seat pillar is mounted on the center pillar and the door is mounted on the lower part of the center pillar, each mounting portion is reinforced in addition to the outer panel and the inner panel, and even if a corresponding stress is applied thereto. It is designed so that deformation and buckling do not occur.

[0004] Incidentally, as this kind, there is, for example, one described in Japanese Utility Model Laid-Open No. 63-165273.

[0005]

However, in the prior art, reinforcement of a seat belt reinforce, a door upper hinge reinforce, a door striker patch, a door lower hinge reinforce, etc. is separately or severally integrated. In addition, since the overall operation was performed integrally, at the time of a side collision, the waistline position on the upper side of the door upper hinge having a large cross-sectional change eventually buckled (see FIG. 5).

For this reason, even if the positions of the roof rail and the sill are maintained, the waistline position near the upper and lower centers of the center pillars buckles and largely enters the room.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a center pillar reinforcing structure for an automobile which can minimize entry into a room due to buckling of the center pillar even in the case of a side collision.

[0008]

In order to achieve this object, the present invention provides a door lower hinge mounting portion and a door strike.
Between the mosquitoes mounting portion, in the center pillar to side loading
The first fragile portion buckle provided Doaa' the second weak portion
It is configured to be set between the pal hinge mounting portion and the door striker mounting portion .

[0009]

According to this structure, when a collision or the like is applied to the side of the vehicle and a lateral load is applied, the front door and the rear door receive a force, and the striker locked at the same time as the collapse of the front door is moved to the indoor side. As a result, the space between the door upper hinge and the door lower hinge of the rear door is pushed into the room. At this time, the fragile portion is provided between the door upper hinge mounting portion and the door lower hinge mounting portion, and when a load is applied to this portion, the fragile portion buckles. The fragile portion is generally located below, and enters the interior of the room to the point where the radius from the general sill to the fragile portion and the radius from the side roof rail to the fragile portion intersect. Since one of the radii is smaller than almost half the radius of the conventional center pillar, the amount that enters the room is also reduced.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIGS. 1 to 6 show an embodiment of the present invention.

First, the configuration will be described. FIG. 6 shows a state where the front door 1 and the rear door 3 on the left side of the body of the automobile are removed. The position of the body corresponding to the two-dot chain line at the upper end of the door 3 is generally called a waistline WL.

The center pillar 20 is connected to support between the sill 5 and the side roof rail 7, and the rear door 3 is attached to the rear door upper hinge mounting portion 21 and the rear door lower hinge mounting portion 23 so as to be openable and closable. , And the rear end of the front door 1
Hanging on 5.

FIG. 1 shows an example of a reinforcing structure of the center pillar 20, and reinforcement is provided at positions indicated by oblique lines. The upper reinforcement including the door upper hinge mounting portion 21
The upper part, from which the seat belt (not shown) is attached, to the lower side of the door upper hinge attachment part 21 is integrally formed.

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

The striker attaching portion 25, Rutotomoni be reinforced striker patch 35 is provided, but is provided with a portion overlapping portion between striker patch 35 and the seat belt reinforcement 31, and most apart, wherein
Door upper hinge mounting part 21 and door striker mounting part
25 is defined as a second fragile portion P2.

The door lower hinge mounting portion 23 is, for example, as shown in FIG.
As shown in (1), a door lower hinge reinforcement 37 is inserted between the center pillar outer panel 27 and the center pillar inner panel 29 and reinforced. Therefore, by eliminating the continuity of reinforcement between the striker patch 35 and the door lower hinge reinforcement 37, here Doasu
A portion between the triker mounting portion 25 and the door lower hinge mounting portion 23 is defined as a first weak portion P1.

The opening 39 (see FIG. 3) provided in the center pillar inner panel 29 is
7 is a work hole for attaching a hinge (not shown) to be mounted on the hinge 7.
Reference numeral 41 denotes a hole for reducing weight and promoting fragility, such as a reduction hole.
Either or neither of the inner panels 29 may be provided or provided on any or both of the vulnerable portions P1 and P2.

The fragile portions P1 and P2 are provided with a reinforcing method and a hole 41.
Adjust the securing of rigidity by the method of setting. Either one may be weakened, but if the first fragile portion P1 is weaker, it will buckle at a lower position, and the amount of penetration of the buckling center pillar will be reduced.

Further, the sill 5 has a relatively low strength due to the reinforcement of the center pillar 20, so that the sill 5 is reinforced by providing the sill brace 43 in this example.

FIG. 4 shows another example of reinforcement. The seat belt reinforce of this example is integrated to the periphery of the door upper hinge mounting portion 21, but the reinforcement is weakened by the example shown in FIG. The striker patch 35 is made larger than that in FIG. 1 in order to further reinforce the striker mounting portion 25 alone.

The door lower hinge reinforce 37 extends to the sill 5 and reinforces it, omitting the sill brace 43 shown in FIG.

In this manner, the fragile portions P1 and P2 are connected to the door lower hinge mounting portion 23 and the striker mounting portion 25, respectively.
Between the striker mounting portion 25 and the door upper hinge mounting portion 21 so that the center pillar 2
0 buckling before the other part .
The hole 41 promotes the vulnerability as described above.
1 and P2 are selectively provided.

Next, the operation will be described.

FIG. 5 is a schematic diagram when a side load F is applied due to a side collision or the like. When the lateral load F is applied, the door lower hinge mounting portion 23 and the door upper hinge mounting portion 21
Buckling occurs at the fragile portions P1 and P2 between them as shown by the two-dot chain line. The upper part of the fragile parts P1 and P2 falls in the vertical direction, and the lower part of the fragile parts P1 and P2 also faces the upper left oblique line.

On the other hand, the waist line W
If the L position is fragile, it is deformed as indicated by the dashed line (the lower part overlaps the dashed line). The waistline WL, which has swelled outward, is broken into the room. In this way, the entry into the room is different, and in the case of the present invention, the waistline WL
Since the part does not break and occurs at the fragile parts P1 and P2,
The upper half shown in a straight line by the two-dot chain line actually has a bulge on the outside, so that a wider state is secured in the indoor space.

[0027]

As described above , according to the first aspect of the present invention , the first fragile portion is provided with the door lower hinge attaching portion and the door.
Insert the second weak part between the striker mounting part and the door upper
By positively providing the space between the flange mounting portion and the door striker mounting portion, the buckling can be performed at a location near the center pillar, and the penetration of the center pillar into the room can be reduced as much as possible. If both fragile parts buckle, the impact load
Absorbs energy slowly and absorbs energy.
Taper can be further reduced from entering the room
You.

The invention according to claim 2, first provided between the further the de Aroahin <br/> di mounting portion and the door striker mounting portion
Lower because the vulnerable part was weaker than the second vulnerable part
Since buckling starts at the first fragile portion, the buckling position is further lowered, and the penetration of the center pillar into the room can be further reduced.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a reinforced state showing one embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view taken along line YY of FIG. 1;

FIG. 4 is a schematic explanatory view similar to FIG. 1;

FIG. 5 is a schematic view showing a buckled state of a center pillar at the time of a side collision.

FIG. 6 is a partial perspective view showing the vicinity of a center pillar on a body side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front door 3 ... Rear door 5 ... Sill 7 ... Side roof rail 20 ... Center pillar 21 ... Door upper hinge attaching part 23 ... Door lower hinge attaching part 25 ... Door striker attaching part WL ... Waist line P1, P2 Weak part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 25/04

Claims (2)

(57) [Claims] 1. A center pillar reinforcing structure for side collision of an automobile, between the Doaroahinji mounting portion and Doasutoraika mounting portion, the first <br/> fragile portion buckled in the center pillar to side loading And the second fragile portion is attached to the door upper hinge mounting portion.
A center pillar structure for an automobile , provided between the door striker mounting portion and the door striker mounting portion . 2. The door lower hin of the two fragile portions.
Before being provided between the attachment part and the door striker attachment part
The first vulnerable part is weaker than the second vulnerable part.
The center pillar reinforcing structure for an automobile according to claim 1, wherein: