JP2000142283A - Vehicle side collision detecting sensor fitting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect a collision efficiently and rapidly. SOLUTION: A front piece 36B of a hinge 36 is fixed to an upper end rear part 28A of a hinge retainer 28 fixed to a longitudinal wall part 12A of a center pillar, with the longitudinal wall part 12A of the center pillar held in between, and a sensor 14 is fixed to a lower end front part 28B of the hinge retainer 28. A rib 50 and cutouts 52, 54 are formed at the nearly center part in the longitudinal direction of the hinge retainer 28. When rotational force A inward in a cabin acts upon the upper end rear part 28A of the hinge retainer 28, the upper end rear part 28A of the hinge retainer 28 easily bends inward in the cabin with the rib 50 and the cutouts as the starting points, and acceleration G generated to the sensor 14 is prevented from being substantially reduced by the rotational force A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle side collision detection sensor mounting structure, and more particularly to a vehicle side collision detection sensor for operating an airbag device or the like when a force acts from the side of the vehicle. Mounting structure.

[0002]

2. Description of the Related Art Conventionally, as an example of a mounting structure of a side collision detection sensor applied to a vehicle such as an automobile, a structure in which a sensor is disposed below a center pillar (Japanese Patent Laid-Open No. 10-59119).
No.) are known. Hereinafter, an example of a mounting structure of such a vehicle side collision detection sensor will be described.

In the mounting structure for a vehicle side collision detection sensor shown in FIG. 6, a vertical wall portion 100A of a center pillar 100 is provided.
Hinged retainer 10 for the rear side door
2 are fixed by bolts 104. A center pillar 10 is provided at the upper end rear portion 102A of the hinge retainer 102.
The hinge 106 of the rear side door 105 shown in FIG.
08 is fixed. As shown in FIG. 6, the hinge retainer 102 extends downward, and a side collision detection sensor 110 for operating an airbag device or the like is fixed to the lower end front portion 102B of the hinge retainer 102. I have. As a result, the impact input from the rear side door 105 to the center pillar 100 via the hinge 106 can be directly transmitted to the sensor 110 via the hinge retainer 102.

[0004]

However, in this mounting structure of the vehicle side collision detection sensor, as shown in FIG. 7, a collision occurs from the outside of the side of the vehicle to the upper end rear portion 102A of the hinge retainer 102 via the hinge 106. When a load (arrow F in FIG. 7) is applied, the load F generates a rotational force (arrow W in FIG. 7) in the hinge retainer 102 in a clockwise direction around the center P in the front-rear direction. As a result, in the sensor 110, an acceleration G2 is generated by the rotational force W in a direction to cancel the acceleration G1 generated by the load F. Therefore, as shown by the broken line in FIG.
During the period 2, the acceleration G generated in the sensor 110 is substantially reduced. For this reason, the detection time T3 required to reach the acceleration G0 required for detection becomes longer. In addition, measures such as increasing the strength of the center pillar body are necessary to suppress the rotational force W.

An object of the present invention is to provide a mounting structure for a vehicle side collision detection sensor capable of efficiently and quickly detecting a collision in consideration of the above fact.

[0006]

According to a first aspect of the present invention, there is provided a vehicle side collision detection sensor mounting structure, comprising: a hinge retainer fixed to a vertical wall portion of a pillar along a vehicle longitudinal direction; A hinge detection part fixed to the hinged part, the hinge retainer is formed at a hinge fixing part to which a door hinge of a side door is fixed, and a sensor fixing part formed at the front of the hinge fixing part and the collision detection sensor is fixed. Portion, formed between the sensor fixing portion and the hinge fixing portion, and easily deformed when a rotational force acts on the hinge fixing portion, thereby suppressing transmission of the rotational force to the sensor fixing portion. And a rotating force suppressing portion that performs the rotation.

Accordingly, when another vehicle or the like collides with the side door and a rotational force inward of the vehicle width acts on the hinge fixing portion of the hinge retainer via the door hinge, the hinge fixing portion and the front portion thereof are moved forward. The rotational force suppressing portion formed between the sensor fixing portion and the sensor fixing portion is easily deformed, and the rotational force is transmitted to the sensor fixing portion, and suppresses the action on the collision detection sensor. That is, it is possible to prevent the rise of the acceleration generated in the collision detection sensor due to the collision load from being delayed by the acceleration generated by the rotational force. Therefore, collision detection can be performed efficiently and quickly.

According to a second aspect of the present invention, in the mounting structure for a vehicle side collision detection sensor according to the first aspect, the rotational force suppressing portion is formed of at least one of a bead and a notch formed along a vertical direction of the vehicle. It is characterized by one of them.

Therefore, in addition to the contents of the first aspect, by adjusting at least one of the bead and the notch formed in the hinge retainer, at least one of the bead and the notch can be formed by a desired rotational force. Since the hinge retainer can be adjusted so as to be bent starting from one of them, the detection accuracy of the sensor can be easily improved.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a mounting structure for a vehicle side collision detection sensor according to the present invention will be described with reference to FIGS.

In the drawings, an arrow FR indicates a forward direction of the vehicle, an arrow UP indicates an upward direction of the vehicle, and an arrow IN indicates a direction toward the interior of the vehicle.

As shown in FIG. 4, the vehicle 1 of the present embodiment
Reference numeral 0 denotes a four-door vehicle, in which a center pillar 12 extending in the vehicle body vertical direction is formed between a front side opening 10A and a rear side door opening 10B. Center pillar 1
A side collision detection sensor (hereinafter, referred to as a sensor) 14 composed of an acceleration sensor is provided below the 2. In addition,
The sensor 14 is connected to a control unit (not shown) for controlling an airbag device or the like as an occupant protection device. The sensor 14 detects an acceleration G acting on the sensor 14 and outputs a detection signal to the control unit. It is supposed to. In the control unit, an occupant protection device such as an airbag device is activated by a detection signal from the sensor 14.

As shown in FIG. 1, the center pillar 12
The outer panel 22 includes an outer panel 22 that forms the outer side of the vehicle interior of the center pillar 12, an inner panel 24 that forms the inner side of the vehicle interior of the center pillar 12, and a reinforcement 26 that is disposed along the inner side of the outer panel 22. A substantially rectangular closed cross section 27 extending in the vertical direction of the vehicle is formed.

As shown in FIG. 2, in the vertical wall portion 12A of the center pillar 12, a hinge retainer 28 is fixed to the vehicle interior side surface of the reinforcement 26 by a fixing means such as a bolt 30 or the like.

As shown in FIG. 3, the screw portion 30A of the bolt 30 has a through hole 31 formed in the hinge retainer 28.
And, it penetrates a through hole formed in the reinforcement 26 (see FIG. 2), and the screw portion 30A of the bolt 30
, A nut is screwed into the reinforcement 26 (see FIG. 2) from the outside of the cabin.

As shown in FIG. 1, the rear side door 32
A rear piece 36A of a pair of upper and lower hinges 36 is fixed to a front wall portion 34A of the inner panel 34 by fastening members such as two bolts 38 and nuts 39 in front and rear. Further, a front piece 36B of the lower hinge 36 is provided with a bolt 38 and a nut 4 on an upper end rear portion 28A as a hinge fixing portion of the hinge retainer 28 with the vertical wall portion 12A of the center pillar 12 interposed therebetween.
It is fixed by a fastening member such as 0.

As shown in FIG. 3, the hinge retainer 28
A lower end front portion 28B as a sensor fixing portion is formed with a concave portion 28C recessed in the vehicle interior.

As shown in FIG. 1, a fastening member 42 such as a screw is inserted into the concave portion 28C, and the sensor 14
Is disposed on the vehicle interior side of the concave portion 28C. Further, the fastening member 42 is attached to the mounting hole 4 formed at the bottom of the concave portion 28C.
6 and screwed into the sensor 14, the sensor 14
Are fixed to the lower end front portion 28B of the hinge retainer 28.

As shown in FIG. 3, the hinge retainer 28
A flange 28D is formed on the outer periphery of the vehicle toward the interior of the vehicle. Further, a rib 50 as a rotational force suppressing portion is formed along a vertical direction at a substantially central portion in the front-rear direction of the hinge retainer 28, and both ends of the rib 50 in the vertical direction serve as a rotational force suppressing portion. Notches 52 and 54 are formed.

As shown in FIG. 1, the cross section of the rib 50 as viewed from above the vehicle has a V-shape with an opening facing the outside of the cabin, and the hinge retainer 28 has an upper end rear portion 28A.
When a rotational force (arrow A in FIG. 1) acts on the interior of the vehicle, the rotational force A causes the rib 50 and the notches 52, 5
4 as a starting point, upper end rear portion 28A of hinge retainer 28
However, as shown by a two-dot chain line in FIG.

The rear side 62A of the inner panel 62 of the front side door 60 is opposed to the outside of the cabin in front of the vertical wall portion 12A of the center pillar 12, and the rear side 62A of the inner panel 62 is a cabin. A rear portion 64 </ b> A of the impact beam 64 disposed in the front side door 60 along the front-rear direction extends from the outer portion.

Next, the operation of the present embodiment will be described.

In the mounting structure of the vehicle side collision detection sensor according to the present embodiment, a load (see FIG. 1) on the upper end rear portion 28A of the hinge retainer 28 via the hinge 36 due to a side collision with the rear side door 32 of another vehicle or the like. When the arrow F) acts on the rear end 28A of the hinge retainer 28 due to the load F, when a rotational force (arrow A in FIG. 1) acts on the upper end rear portion 28A, the rib 50 and the notches 52 and 54 are used as starting points. As a result, the upper end rear portion 28A of the hinge retainer 28 easily bends into the vehicle compartment as shown by a two-dot chain line in FIG.

As a result, as shown by the solid line in FIG. 5, the acceleration G generated in the sensor 14 does not substantially decrease due to the rotational force A.
Is shorter than the detection time T3 in the related art shown by a broken line in FIG. 5, and the sensor 14 can efficiently and quickly detect a collision.

The rise delay between the time T4 and the time T5 at the acceleration G shown by the solid line in FIG.
This is due to the bending of the hinge retainer 28 starting from the rib 50 and the notches 52 and 54.

In the present embodiment, the hinge retainer 2
By adjusting the front and rear width and height of the bead 50 to be formed at 8 or the width and depth of the notches 52 and 54, the hinge 50 starts from the ribs 50 and the notches 52 and 54 by a desired rotational force A. Since the retainer 28 can be adjusted to be bent, the detection accuracy of the sensor 14 can be easily improved.

In the above, the present invention has been described in detail with respect to a specific embodiment. However, the present invention is not limited to such an embodiment, and various other embodiments are included in the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, in the present embodiment, the cross-sectional shape of the rib 50 serving as the rotational force suppressing portion as viewed from above the vehicle is V-shaped with the opening facing the outside of the vehicle compartment. The shape is not limited to the V shape, and may be another shape such as a U shape. Further, in the present embodiment, the rib 50 and the notches 52 and 54 are formed as the rotational force suppressing portion. However, instead, only one of the rib 50 and the notches 52 and 54 may be formed. In addition, the rotational force suppressing unit is
Not limited to the rib 50 and the notches 52 and 54, the slit,
Another fragile portion made of a thin portion or the like having a reduced thickness may be used.

In this embodiment, the embodiment in which the mounting structure of the vehicle side collision detection sensor of the present invention is applied to a center pillar (B pillar) of a four-door vehicle has been described.
The mounting structure of the vehicle side collision detection sensor according to the present invention is also applicable to a mounting structure of the vehicle side collision detection sensor in a pillar of another vehicle such as a C pillar of a 6-door vehicle.

[0029]

The present invention according to claim 1 has an excellent effect that collision detection can be performed efficiently and quickly.

The present invention described in claim 2 has an excellent effect that the detection accuracy can be easily improved in addition to the effect described in claim 1.

[0031]

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line 1-1 in FIG.

FIG. 2 is a perspective view showing a mounting structure of a vehicle side collision detection sensor according to an embodiment of the present invention, as viewed from the inside rearward of the vehicle diagonally.

FIG. 3 is a perspective view showing the hinge retainer in the mounting structure of the vehicle side collision detection sensor according to the embodiment of the present invention, as viewed from the obliquely rear inner side of the vehicle.

FIG. 4 is a schematic side view showing an inner side portion of a vehicle body to which a mounting structure for a vehicle side collision detection sensor according to an embodiment of the present invention is applied.

FIG. 5 is a graph showing detection accuracy of a sensor in a mounting structure for a vehicle side collision detection sensor according to an embodiment of the present invention.

FIG. 6 is a perspective view showing a mounting structure of a vehicle side collision detection sensor according to a conventional embodiment, viewed from diagonally rear inner side of the vehicle.

FIG. 7 is a sectional view taken along the line 7-7 in FIG. 6;

[Explanation of symbols]

 Reference Signs List 12 Center pillar 12A Center pillar vertical wall vertical wall 14 Vehicle side collision detection sensor 22 Center pillar outer panel 26 Center pillar reinforcement 28 Hinge retainer 28A Upper end rear part of hinge retainer (hinge fixing part) 28B Lower end of hinge retainer Front part (sensor fixing part) 32 Rear side door 36 Hinge 50 Rib (rotational force suppression part) 52 Notch (rotational force suppression part) 54 Notch (rotational force suppression part)

Claims (2)

[Claims] 1. A hinge retainer fixed to a vertical wall of a pillar along a longitudinal direction of a vehicle, and a collision detection sensor fixed to the hinge retainer, wherein the hinge retainer is fixed to a door hinge of a side door. A hinge fixing portion, a sensor fixing portion formed in front of the hinge fixing portion and to which the collision detection sensor is fixed, and a sensor fixing portion formed between the sensor fixing portion and the hinge fixing portion. Easily deformed when rotational force acts,
And a rotational force suppressing unit that suppresses transmission of the rotational force to the sensor fixing unit. 2. The mounting of the vehicle side collision detection sensor according to claim 1, wherein the rotational force suppressing portion is at least one of a bead and a notch formed along a vertical direction of the vehicle. Construction.