JP3341628B2 - Mounting structure of side impact sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side collision sensor mounting structure, and more particularly to a side collision sensor mounting structure mounted on a side door of a vehicle such as an automobile.

[0002]

2. Description of the Related Art Conventionally, a mounting structure of a side collision sensor in which a side collision sensor is mounted on a side door of a vehicle such as an automobile has been known, and an example thereof is disclosed in Japanese Patent Application Laid-Open No. 5-93735.

As shown in FIG. 6, in this side collision sensor mounting structure, an impact beam (reinforcement beam) 102 is disposed inside a side door 100 along the vehicle front-rear direction. A side impact sensor 104 is provided in close proximity. The side collision sensor 104 is fixed to the inner panel 108 of the side door 100 via a bracket 106. The side collision is performed only when the impact beam 102 is deformed by the side collision and comes into contact with the side collision sensor 104. Since the sensor 104 operates, the side collision sensor 104 does not operate when the side door 100 is slightly deformed without deforming the impact beam 102.

[0004]

However, in the mounting structure of the side collision sensor, when the collision position is moved in the vertical direction with respect to the impact beam 102 due to a difference in the bumper height of the collision vehicle, the impact is reduced. The deformation timing of the beam 102 is delayed. Therefore, in order to quickly detect a side collision by the side collision sensor 104, the gap between the impact beam 102 and the side collision sensor 104 needs to be extremely small. Is extremely small, the side collision sensor 104 is easily operated even by a slight deformation of the side door 100, so that the reliability of the side collision sensor 104 is impaired.

[0005] In consideration of the above fact, the present invention can quickly detect a side collision regardless of the bumper height of the colliding vehicle, and
An object of the present invention is to provide a mounting structure for a side collision sensor that does not impair the reliability of the side collision sensor.

[0006]

According to a first aspect of the present invention, there is provided a vertically extending window regulator guide rail fixed to a substantially central portion of an inner panel of a side door in the front-rear direction, and attached to the window regulator guide rail. And a side collision sensor for detecting acceleration generated in the window regulator guide rail.

Therefore, the collision vehicle collides with the side door,
When the side door is deformed by a predetermined amount, acceleration is generated in the window regulator guide rail, and this acceleration is detected by the side collision sensor. In addition, since the window regulator guide rail extends vertically in a substantially central portion in the front-rear direction of the inner panel of the side door, even when the bumper height of the collision vehicle is different, the acceleration of the window regulator guide rail is reduced. The occurrence timing is hard to be delayed. As a result, a side collision can be quickly detected regardless of the bumper height of the colliding vehicle. In addition, when the side door is slightly deformed, the acceleration of the window regulator guide rail does not exceed a predetermined value, so that the reliability of the side collision sensor is not impaired.

According to a second aspect of the present invention, in the mounting structure for a side impact sensor according to the first aspect, an impact is disposed substantially along the vehicle front-rear direction on a portion of the window regulator guide rail that is located outside the vehicle. It is characterized by having a beam.

Therefore, even when the collision position of the colliding vehicle is shifted in the front-rear direction, acceleration is generated in the window regulator guide rail via the impact beam, so that the timing of generation of the acceleration generated in the window regulator guide rail is not easily delayed. . As a result, even when the collision position of the colliding vehicle is shifted in the front-rear direction, the side collision can be quickly detected.

According to a third aspect of the present invention, in the mounting structure for a side impact sensor according to the first aspect, a side door inner provided with a working hole is provided in a direction of the window regulator guide rail toward the passenger compartment. A panel and a seal member for closing the work hole are provided, and the side collision sensor is attached to the window regulator guide rail from the vehicle cabin side with the seal member interposed therebetween.

Therefore, the side impact sensor can be isolated from the outside of the side door inner panel through which rainwater, dust and the like enter by the seal member, so that the side impact sensor can be protected from moisture, dust and the like. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a mounting structure for a side impact sensor according to the present invention will be described with reference to FIGS.

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

As shown in FIG. 2, an impact beam 12 is provided in the front side door 10 of the first embodiment along the vehicle front-rear direction (when the door is closed). Are connected to the front and rear portions of the front side door 10 via brackets (not shown).

[0015] As shown in FIG.
2 is a door outer panel 14 of the front side door 10
, And is located near the rear surface 14A of the door outer panel 14. The door inner panel 16 of the front side door 10 includes a door glass 1.
A window regulator guide rail 18 for moving up and down 7 is fixed by a fixing member 20 such as a bolt.

As shown in FIG. 2, the window regulator guide rail 18 is disposed substantially vertically in the center of the front side door 10 in the front-rear direction and in the vicinity of the side of the occupant sitting on the front seat. positioned. A power window motor 22, a front lower frame 24, and a rear lower frame 26 are attached to the door inner panel 16 (see FIG. 1).

As shown in FIG. 1, the window regulator guide rail 18 is provided so as to straddle a work hole 30 formed in the door inner panel 16. Further, an acceleration sensor as a side collision sensor is provided on a surface 18A of the window regulator guide rail 18 on the vehicle cabin side (in a door closed state), that is, an intermediate portion in the vertical direction of the surface 18A of the front side door 10 on the door trim 32 side. 34 are provided. The acceleration sensor 34 is attached to a bracket 36 fixed to the window regulator guide rail 18 by welding or the like with fixing members 38 such as bolts and nuts.

Next, the operation of the first embodiment will be described.
In the first embodiment, the colliding vehicle is the front side door 1
When the front side door 10 collides with a predetermined amount and deforms by a predetermined amount, acceleration is generated in the window regulator guide rail 18, and the acceleration sensor 34 detects the acceleration. In addition, since the window regulator guide rail 18 extends vertically at a substantially central portion in the front-rear direction of the door inner panel 16 of the front side door 10, even when the bumper height of the collision vehicle is different, the window regulator guide rail 18 is provided. The timing at which the acceleration occurs at 18 is not easily delayed. As a result, a side collision can be quickly detected regardless of the bumper height of the colliding vehicle.

In addition, when the front side door 10 is slightly deformed, the acceleration of the window regulator guide rail 10 does not exceed a predetermined value, so that the reliability of the acceleration sensor 34 is not impaired.

In the first embodiment, since the impact beam 12 is disposed substantially in the vehicle front-rear direction on the portion of the window regulator guide rail 18 which is on the outside of the vehicle, the collision position of the collision vehicle is determined. Even when the vehicle is displaced in the vehicle front-rear direction with respect to the regulator guide rail 18, the impact beam 12 deforms the window regulator guide rail 18, and acceleration is generated on the window regulator guide rail 18. As a result, the timing of the generation of the acceleration generated on the window regulator guide rail 18 is not easily delayed. Therefore, even when the collision position of the collision vehicle is displaced from the window regulator guide rail 18 in the vehicle front-rear direction, the side collision can be quickly detected.

Since the frequency component of the impact force at the time of a side collision is less than 50 Hz as shown in FIG. 3, in order to further improve the reliability of the acceleration sensor 34, the signal obtained from the acceleration sensor 34 must be It is necessary to remove a signal (noise) in the frequency domain other than the collision component using a filter or the like. Therefore, it is preferable that the resonance frequency of the mounting portion of the acceleration sensor 34 be 50 Hz or more.

Next, a second embodiment of the mounting structure for a side impact sensor according to the present invention will be described with reference to FIG.

The same members as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in FIG. 4, in the second embodiment, the working hole 30 is closed by a sealing member 40 made of a resin sheet or the like. From the indoor side, it is attached to a bracket 36 of the window regulator guide rail 18 previously fixed to the door inner panel 16 with a fixing member 38 such as a bolt or a nut.

The seal member 40 has an outer peripheral edge 4
0A is adhered to the peripheral portion of the work hole 30 of the door inner panel 16, and rainwater, dust, and the like that have entered between the door outer panel 14 and the door inner panel 16 pass through the work hole 30 to the door inner panel 16. It is prevented from entering between the door trim 32.

Therefore, in the second embodiment, the acceleration sensor 34 can be isolated from the outside of the side door inner panel 16 through which rainwater, dust and the like enter by the seal member 40. , Dust and the like.

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 within the scope of the present invention. It is clear to a person skilled in the art that is possible. For example, as shown in FIG.
May be directly attached to the window regulator guide rail 18 with a fixing member 38 such as a bolt or a nut without using a bracket. When a power window motor is attached to the window regulator guide rail via a bracket, the bracket may be extended to fix the acceleration sensor. Also,
The mounting structure for a side impact sensor according to the present invention is also applicable to a rear side door.

[0028]

According to the first aspect of the present invention, there is provided a window regulator guide rail fixed to substantially the center of the inner panel in the front-rear direction of the side door and extending in the vertical direction, and mounted on the window regulator guide rail. And a side collision sensor for detecting the acceleration generated in the vehicle. Therefore, the side collision can be quickly detected regardless of the bumper height of the colliding vehicle, and the reliability of the side collision sensor is not impaired.

According to a second aspect of the present invention, in the mounting structure for a side impact sensor according to the first aspect, an impact beam is disposed substantially along the vehicle front-rear direction on a portion of the window regulator guide rail that is outside the vehicle. Therefore, in addition to the effect described in claim 1, there is an excellent effect that a side collision can be quickly detected even when the collision position of the collision vehicle is shifted in the front-rear direction.

According to a third aspect of the present invention, in the mounting structure for a side impact sensor according to the first aspect, a side door inner panel provided with a working hole is provided in a direction toward a vehicle cabin side of the window regulator guide rail. And a seal member for closing the working hole, and the side collision sensor is attached to the window regulator guide rail from the vehicle cabin side with the seal member interposed therebetween. It has an excellent effect that it can be protected from dust and the like.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a mounting structure of a side collision sensor according to a first embodiment of the present invention, as viewed from the front of a vehicle.

FIG. 2 is a perspective view of a main part of a mounting structure of the side collision sensor according to the first embodiment of the present invention, as viewed obliquely from the front inside the vehicle.

FIG. 3 is a graph showing a relationship between an impact force and a frequency at the time of a side collision of the mounting structure of the side collision sensor according to the first embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a mounting structure of a side collision sensor according to a second embodiment of the present invention, as viewed from the front of a vehicle.

FIG. 5 is a cross-sectional view illustrating a mounting structure of a side collision sensor according to another embodiment of the present invention, as viewed from the front of a vehicle.

FIG. 6 is a cross-sectional view of a mounting structure of a side collision sensor according to a conventional embodiment, viewed from the front of a vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Front side door 12 Impact beam 14 Door outer panel 16 Door inner panel 18 Window regulator guide rail 30 Working hole 34 Acceleration sensor (side collision sensor) 40 Seal member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-46836 (JP, A) JP-A-5-254388 (JP, A) JP-A-5-45371 (JP, A) 368250 (JP, A) JP-A-5-16757 (JP, A) JP-A-5-319096 (JP, A) JP-A-6-227359 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G01P 15/00-15/13 B60J 5/04 B60R 21/22 B60R 21/32

Claims (3)

(57) [Claims] 1. A vertically extending window regulator guide rail fixed to a substantially central portion in the front-rear direction of an inner panel of a side door, and a side surface attached to the window regulator guide rail for detecting acceleration generated in the window regulator guide rail. A mounting structure for a side collision sensor, comprising: a collision sensor; 2. The mounting structure for a side impact sensor according to claim 1, wherein an impact beam disposed substantially along the front-rear direction of the vehicle is provided on a portion of the window regulator guide rail that is located outside the vehicle. 3. A side door inner panel which is disposed in the vehicle interior side of the window regulator guide rail and has a working hole formed therein, and a seal member for closing the working hole, wherein the side collision sensor is provided. The mounting structure for a side impact sensor according to claim 1, wherein the side collision sensor is attached to the window regulator guide rail from the vehicle interior side with the seal member interposed therebetween.