JPH06227360A - Mounting structure of impact sensor for vehicle - Google Patents

Abstract

PURPOSE:To detect even such a collision as grazing past a body side and/or that from an oblique direction with certainty by installing an outer panel almost in parallel with the arraying direction of impact sensors, and setting up a fixed point between a reinforce member for the outer panel and an outer panel inner surface, in and around the impact sensor. CONSTITUTION:In the case where another car has collides from the oblique direction so as to graze past the side of a car body, as a reinforce member 14 is installed in and around an impact sensor 1 2 as being supported on an inner surface of an outer panel 11a, even if this outer panel 11a is wavily deformed, a fixed point with this reinforce member 14 canes to a so-called wavy root part, so that the impact sensor 12 to be installed in the vicinity is compressed and conducted. In brief, even a collision from the oblique direction is surely detected. An electric current flows into an inflator of an air bag unit and thereby a gassing agent in this inflator ignites, and an air bag is inflated by the gas generated, whereby a ride is protected from the secondary crash.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting a collision sensor, which is compressed when a collision occurs and is conducted to detect a collision, inside a vehicle body side portion such as a fender or a side door.

[0002]

2. Description of the Related Art As a mounting structure of a collision sensor for detecting a collision by connecting contacts when compressed during a collision, for example, mounting a collision sensor 3 including a primary sensor 1 and a secondary sensor 2 shown in FIGS. The structure is proposed by Japanese Patent Application No. 3-169333.

In this collision sensor 3, a flat rectangular pipe-shaped secondary sensor 2 is mounted on the door outer panel 4a side of a highly rigid side impact beam 5 provided substantially horizontally in the side door 4, and the secondary sensor 2 On the surface of the sensor 2 on the door outer panel 4a side, a plurality of primary sensors 1 are attached in a substantially straight line shape at predetermined intervals.

Further, a mastic sealer 6 is provided between the inner surface of the door outer panel 4a and the collision sensor 3, and the secondary sensor 2 and the door outer panel 4a are provided at a substantially midpoint between the primary sensors 1 and 1 which are adjacent to each other on the same straight line.
They are bonded and connected to and respectively. The mastic sealer 6 has a function of preventing the outer door panel 4a from being distorted or drooping, and a function of keeping the distance between the inner surface of the outer door panel 4a and each primary sensor 1 arranged closest to the inner surface substantially constant. The primary sensor 1 is prevented from conducting with an external force below a certain level,
It functions as an elastic member for preventing malfunction of the primary sensor 1 in the case of no collision (see FIG. 4).

[0005]

In the above-mentioned conventional mounting structure for the collision sensor 3, the collision sensor 3 is disposed close to the inner surface of the door outer panel 4a of the side door 4.
In order to prevent the door outer panel 4a from being distorted or drooped so that the distance between the door outer panel 4a and the inner surface of the door outer panel 4a is kept constant, the mastic sealer 6 is provided between the collision sensor 3 and the inner surface of the door outer panel 4a. Are glued by. Therefore, when the colliding vehicle collides with the vehicle body in a direction substantially perpendicular to the vehicle body (with respect to the side door 4), a load larger than a predetermined amount for compressing the mastic sealer 6 is applied to the door outer panel 4a, and thus the primary sensor 1
Is compressed and can be electrically conducted to detect a collision, but at the time of a collision from an oblique direction such as blurring the side surface of the vehicle body, the door outer panel 4a of the side door 4 as shown in the sectional plan view of FIG. Is deformed in a wave shape, many primary sensors 1 may be located in a portion corresponding to a so-called mountain in the wave shape, and therefore these primary sensors 1 are not turned on. That is, it is likely that the primary sensor 1 does not detect a collision, which may reduce the reliability of the collision sensor 3.

The present invention has been made in view of the above circumstances, and provides a mounting structure for a vehicle collision sensor capable of reliably detecting a collision such as a side wall of a vehicle body or a collision from an oblique direction. It is an object.

[0007]

SUMMARY OF THE INVENTION As a means for solving the above problems, the present invention provides a vehicle collision in which a plurality of collision sensors are mounted inside an outer panel to detect a collision by being conducted by being compressed during a collision. In the sensor mounting structure, the plurality of collision sensors are supported by a rigid member inside the outer panel and arranged in a substantially horizontal direction, and the outer panel lean force member is arranged on the inner surface of the outer panel and in the arrangement direction of the collision sensors. And the fixing point between the outer panel lean force member and the inner surface of the outer panel is set in the vicinity of the collision sensor.

[0008]

With the above-described structure, even if the other portion of the outer panel is deformed into a wavy shape at the time of a collision from an oblique direction, the outer panel lean force member supported by the outer panel is provided in the vicinity of the collision sensor. Since it is reinforced by, the wavy deformation is suppressed. Therefore, when a collision occurs, the outer panel compresses the collision sensor to make it conductive,
It also reliably detects a collision from an oblique direction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the mounting structure of the present invention is applied to a mounting structure of a collision sensor for a side air bag device which is mounted inside a side door mounted on the side surface of a vehicle body will be described with reference to FIGS. Explain.

The side airbag device includes a side door 11
An airbag provided inside is deployed to the inside of the vehicle compartment at the time of a collision and the impact is absorbed by the airbag to protect the occupant from a secondary collision.

FIG. 1 shows how the collision sensor 12 is attached to the inside of the side door 11.
Is composed of a flat rectangular pipe-shaped secondary sensor 12b and a plurality of primary sensors 12a equipped with arc-shaped cover members attached to one side surface of the secondary sensor 12b at predetermined intervals.

The collision sensor 12 is attached to one side surface of the side impact beam 13 which is attached substantially horizontally in the side door 11 by connecting both ends to the door frame via the brackets 13a. The primary sensor 12a is attached so as to be arranged close to the inner surface of the outer panel 11a.

Further, on the inner surface of the outer panel 11a, there is provided a lean force member 14 having a hat-shaped cross section for preventing the outer panel 11a of the side door 11 from being distorted or drooped. Of the primary sensor 1 and the primary sensor 1
The vicinity of 2a is firmly bonded and fixed to the inner surface of the outer panel 11a by a mastic sealer 15. The fixed point and the collision sensor 12 are preferably arranged side by side in the vertical direction as shown in the figure, but some deviation in the front-back direction is allowed.

Next, the operation of this embodiment constructed as described above will be explained. The collision sensor 12 arranged in the side door 11 of the vehicle collides with the side door 11 from a direction substantially perpendicular thereto. Occasionally, for example, when two or more primary sensors 12a are compressed to conduct, or a secondary sensor 12b is compressed to conduct, a collision is configured to be detected, and the collision sensor 12 malfunctions during non-collision. Is being prevented.

When the collision sensor 12 is compressed and becomes conductive at the time of collision, a current flows through the inflator of the airbag device (not shown) to ignite the gas generating agent in the inflator, and the generated gas causes the airbag (not shown). No)
Inflate and protect the occupant from a secondary collision.

When another vehicle collides obliquely with the side surface of the vehicle body, the lean force member 14 is provided near the upper side of the collision sensor 12 and the outer panel 11a.
Since it is supported and provided on the inner surface of the outer panel 1,
Even if 1a is deformed in a wave shape, the fixed point with the lean force member 14 becomes a so-called valley portion of the wave shape, so that the collision sensor 12 provided in the vicinity thereof is compressed and becomes conductive.
That is, it is possible to reliably detect a collision from an oblique direction. Then, when the collision sensor 12 is compressed and becomes conductive, a current flows through the inflator of the airbag device (not shown) to ignite the gas generating agent in the inflator and inflate the airbag (not shown) with the generated gas. , Protect passengers from secondary collisions.

In this embodiment, the case where the collision sensor 12 including the primary sensor 12a and the secondary sensor 12b is mounted inside the side door 11 has been described. However, only the collision sensor similar to the primary sensor 12a is installed in the side door 11. The same can be applied to a case where a plurality of collision sensors are supported by the impact beam 13 and the collision sensors are arranged inside the vehicle body side portion other than the side door 11.

Further, in this embodiment, the case where the lean force member 14 is arranged at one location near the upper side of the collision sensor 12 has been described.
As another disposition position of 4, the one position near the lower part of the collision sensor 12 or the two positions near the upper and lower parts of the collision sensor 12 is suitable.

[0019]

As described above, according to the vehicle collision sensor mounting structure of the present invention, the plurality of collision sensors are supported by the rigid member inside the outer panel and arranged substantially horizontally, and the outer panel lean force member is arranged. Is supported in the vicinity of the plurality of collision sensors on the inner side surface of the outer panel, and is provided substantially parallel to the arrangement direction of the collision sensors, so that a collision from an oblique direction such as blurring the side surface of the vehicle body can be reliably detected. The airbag can be operated to protect the occupant from a secondary collision.

[Brief description of drawings]

FIG. 1 is a perspective view of a door showing an embodiment of a collision sensor mounting structure of the present invention.

FIG. 2 is a sectional side view taken along line II-II of FIG.

FIG. 3 is a perspective view of a door showing an example of a conventional collision sensor mounting structure.

4 is a cross-sectional plan view taken along the line IV-IV of FIG.

FIG. 5 is a cross-sectional plan view showing a state in which the outer panel is deformed in a wave shape.

[Explanation of symbols]

 11 Side Door 11a Outer Panel 12 Collision Sensor 12a Primary Sensor 12b Secondary Sensor 13 Side Impact Beam 14 Lean Force Member 15 Mastic Sealer

Claims (1)

[Claims] 1. A vehicle collision sensor mounting structure for mounting a plurality of collision sensors inside of an outer panel for detecting a collision by being electrically connected by being compressed at the time of a collision, wherein the plurality of collision sensors are rigid members inside the outer panel. The outer panel lean force member is provided on the inner surface of the outer panel and substantially parallel to the arrangement direction of the collision sensor.
An attachment structure for a vehicle collision sensor, wherein a fixing point between the outer panel lean force member and the inner surface of the outer panel is set in the vicinity of the collision sensor.