JP2013141887A - Vehicle side collision detecting mechanism and occupant protecting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To detect and discriminate between an MDB side impact and a pole side impact in a side collision of a vehicle with high accuracy.SOLUTION: An intermediate part in the vertical direction of a vehicle in an outer wall 16A in the vehicle width direction of a door inner panel 16 is provided with a bulkhead part 110. The bulkhead part 110 is formed like a box with a hat-shape in its cross section, the inner side in the vehicle width direction of which is arranged as its open side. The bulkhead part 110 is joined with the outer wall 16A in the vehicle width direction of a door inner panel 16, whereby a sealed space Q is formed therein. Then, a pressure sensor 150 is provided at a part corresponding to the bulkhead part 110 (the sealed space Q) in the inner wall face 16B in the vehicle width direction of the door inner panel 16.

Description

  The present invention relates to a vehicle side collision detection mechanism and an occupant protection system.

  In Patent Document 1, a cylindrical member is disposed between a door inner panel and a door beam or a door outer panel in a side door, and a pressure sensor for detecting pressure fluctuations in a sealed space provided in the cylindrical member is provided. A vehicle collision detection device is disclosed. In a vehicle side collision, an occupant protection device such as an air bag is operated based on the detection result of the pressure sensor (see Patent Document 1).

  Here, “the entire lower part of the side door is deformed like a barrier side collision (a side collision with the barrier) in which the bumper part of the collision target vehicle collides with the lower part of the side door, and the amount of deformation of the door outer inward in the vehicle width direction is reduced. When it is small ”and“ A part of the side door in the vehicle width direction is deformed and the inside of the door outer panel in the vehicle width direction, such as a pole side collision (a side collision with the pole) where the side door collides with a pole-shaped collision object. There was a case where there was no significant difference in the pressure fluctuation in the sealed space in the side door. Therefore, when it is difficult to detect (separate) “barrier side collision (side collision with the barrier)” and “pole side collision (side collision with the pole)” due to pressure fluctuations in the sealed space. was there. Therefore, the technique of Patent Document 1 has room for improvement in this regard. Other related techniques are disclosed in Patent Document 2 and Patent Document 3.

JP 2010-155499 A JP 2006-232126 A JP 07-242153 A

  The present invention has been made in consideration of the above facts, and it is an object to easily detect a side collision with a pole without detecting a side collision with a barrier in a vehicle side collision.

  The vehicle side collision detection mechanism according to claim 1 includes a door outer panel that constitutes an outer plate of a side door provided on a side of the vehicle, a door inner panel that constitutes an inner plate of the side door, and a vehicle having the door inner panel. A partition portion that is provided at an intermediate portion in the vehicle vertical direction on the wall surface on the outer side in the width direction and that forms a sealed space, and detection means that detects pressure fluctuations in the sealed space.

  According to the first aspect of the present invention, in the case of a side collision with the barrier that collides with the lower part of the side door, the entire lower part of the side door is deformed. small. Therefore, the door outer panel does not contact the partition wall portion provided in the middle portion in the vertical direction of the vehicle, or the deformation amount of the partition wall portion is small even when contacting. Therefore, in the case of a side collision with the barrier, the pressure fluctuation in the sealed space formed by the partition wall is small.

  On the other hand, in the case of a collision with a pole in which a side door collides with a pole-shaped collision object, the side door is a part of the vehicle width direction but greatly deforms over the entire vehicle vertical direction. The amount of deformation at the center in the vertical direction is large. Therefore, the door outer panel comes into contact with the partition wall provided in the middle portion of the vehicle in the vertical direction and greatly deforms the partition, that is, the deformation of the partition is large. Therefore, in the case of a side collision with the pole, the pressure fluctuation in the sealed space formed by the partition wall is large.

  In this way, the difference in pressure fluctuation in the sealed space detected by the detecting means is large between the side collision with the barrier and the side collision with the pole in the vehicle side collision, so the side collision with the barrier is not easily detected. A side collision with the pole can be detected.

  According to a second aspect of the present invention, there is provided the vehicle side collision detection mechanism according to the first aspect, wherein a door trim is provided on the inner side in the vehicle width direction of the door inner panel, and the detection means includes a wall surface on the inner side in the vehicle width direction of the door inner panel and It is arrange | positioned between door trims.

  According to the second aspect of the present invention, the space between the door inner panel on the outer side in the vehicle width direction and the door trim is, for example, more waterproof and dustproof than that between the door outer panel and the door inner panel. Since it is ensured, the reliability of the detection means is improved.

  According to a third aspect of the vehicle side collision detection mechanism of the present invention, in the first or second aspect, the partition wall is formed in an elongated shape along the vehicle front-rear direction.

  According to the third aspect of the present invention, since the partition wall portion is formed in an elongated shape along the vehicle front-rear direction, the detection range of the detection means is expanded in the vehicle front-rear direction.

  According to a fourth aspect of the present invention, in the vehicle side collision detection mechanism according to the third aspect, a door impact beam is provided between the door outer panel and the door inner panel with the vehicle front-rear direction as a longitudinal direction. The beam is disposed on the outer side in the vehicle width direction and on the lower side in the vehicle vertical direction with respect to the partition wall.

  According to the fourth aspect of the present invention, in a vehicle side collision, the collision load is transmitted to the door impact beam via the door outer panel, and the door impact beam is deformed inward in the vehicle width direction, so that the collision energy is absorbed. Is done. Since the door impact beam is disposed outside the partition wall portion in the vehicle width direction and below the partition wall portion in the vehicle vertical direction, deformation of the door outer panel in the vehicle width direction in a side collision with the barrier is suppressed. Is done.

  Therefore, the pressure fluctuation in the sealed space formed by the partition wall portion in the side collision with the barrier is further reduced, and the accuracy of not detecting the side collision with the barrier is improved.

  The vehicle side collision detection mechanism according to a fifth aspect of the present invention is the vehicle side collision detection mechanism according to the third aspect, wherein a door impact beam is provided between the door outer panel and the door inner panel with the vehicle longitudinal direction as a longitudinal direction. Further, it is arranged so as to overlap the partition wall portion on the outer side in the vehicle width direction and in a side view.

  According to the fifth aspect of the present invention, the collision load is transmitted to the door impact beam through the door outer panel, and the door impact beam is deformed inward in the vehicle width direction, so that the collision energy is absorbed. Since the door impact beam is disposed outside the partition wall portion in the vehicle width direction and overlaps the partition wall portion in a side view, the door impact beam is deformed inward in the vehicle width direction due to a side collision with the pole. A pressure fluctuation occurs in the sealed space by contacting the part and deforming the partition part. The amount of deformation of the partition wall increases by the thickness of the door impact beam in the vehicle width direction.

  Therefore, the pressure fluctuation in the sealed space formed by the partition wall portion at the side collision with the pole is further increased, so that the accuracy of detecting the side collision with the pole is improved.

  The vehicle side collision detection mechanism according to claim 6 includes a door outer panel constituting an outer plate of a side door provided on a vehicle side portion, a door inner panel constituting an inner plate of the side door, and a vehicle having the door inner panel. The door outer panel is provided on a wall surface on the outer side in the width direction so that the door outer panel deformed inward in the vehicle width direction does not come into contact with the barrier, and the door outer panel deformed inward in the vehicle width direction in the side collision with the pole It has a partition part which forms the sealed space comprised so that it may contact, and the detection means which detects the pressure fluctuation of the said sealed space.

  According to the sixth aspect of the present invention, the partition wall portion is configured so that the door outer panel deformed inward in the vehicle width direction does not come into contact with the barrier at the time of a side collision. There is almost no or small pressure fluctuation in the sealed space formed by the partition wall. On the other hand, since the partition wall portion is configured such that the door outer panel deformed inward in the vehicle width direction comes into contact with the pole in the case of a side collision, the sealed space formed by the partition wall in the case of a side collision with the pole side collision The pressure fluctuation is large.

  In this way, the difference in pressure fluctuation in the sealed space between the side collision with the barrier and the side collision with the pole in a vehicle side collision increases, so it is not easily detected by the side collision with the barrier. A collision can be detected.

  An occupant protection system according to a seventh aspect includes a vehicle side collision detection mechanism according to any one of the first to sixth aspects and a detection value of pressure fluctuation detected by the detection means, wherein a predetermined threshold value And an activating means for activating the occupant protection device.

  According to the seventh aspect of the present invention, since the difference in pressure fluctuation in the sealed space is large between the side collision with the barrier and the side collision with the pole in the vehicle side collision, the pressure at the side collision with the barrier is increased. By setting a threshold value between the peak value of the fluctuation and the peak value of the pressure fluctuation at the side collision with the pole, the occupant protection device is not activated at the side collision with the barrier easily, and the side collision with the pole is avoided. Sometimes the occupant protection device can be activated.

  According to the first aspect of the present invention, compared with the configuration in which the partition wall portion is not provided in the middle portion in the vehicle vertical direction on the wall surface in the vehicle width direction of the door inner panel, the barrier against the vehicle side collision can be easily performed. A side collision with the pole can be detected without detecting a side collision.

  According to invention of Claim 2, compared with the structure which provides a detection means between a door outer panel and a door inner panel, the reliability of a detection means can be improved.

  According to the invention described in claim 3, the detection range of the detection means can be expanded in the vehicle front-rear direction.

  According to the fourth aspect of the present invention, compared with the configuration in which the detection means and the partition wall overlap in a side view, the pressure fluctuation in the sealed space formed by the partition wall in the side collision with the barrier is reduced. The accuracy of not detecting a side collision with the barrier can be improved.

  According to the fifth aspect of the present invention, the pressure variation in the sealed space formed by the partition wall in the side collision with the pole is larger than in the configuration in which the detection means and the partition wall are separated from each other in a side view. The accuracy of detecting a side collision with the pole can be improved.

  According to the sixth aspect of the present invention, compared with the configuration in which the door outer panel is in contact with the partition wall in both the side collision with the barrier and the side collision with the pole, it is easy to A side collision with the pole can be detected without detecting a side collision.

  According to the seventh aspect of the present invention, it is possible to easily activate the occupant protection device at the time of a side collision with the pole without operating the occupant protection device at the time of a side collision with the barrier.

FIG. 3 is an enlarged vertical sectional view of a cross section taken along line AA of FIG. 2 showing a vehicle side portion to which a vehicle side collision detection mechanism according to an embodiment of the present invention is applied. 1 is a side view schematically showing a vehicle side portion to which a vehicle side collision detection mechanism according to an embodiment of the present invention is applied. 1 is a block diagram showing an occupant protection system according to an embodiment of the present invention. (A) is an enlarged longitudinal sectional view corresponding to FIG. 1 showing the deformation of the side door at the time of MDB side collision when a bumper part of MDB (Moving Deformable Barrier) collides side by side substantially in the entire vehicle width direction at the lower part of the side door. (B) is a side view corresponding to FIG. 2 which shows the collision position and collision range of the bumper part of MDB. (A) is an enlarged longitudinal sectional view corresponding to FIG. 1 showing the deformation of the side door at the time of pole side collision, and (B) is a side view corresponding to FIG. 2 showing the collision position and collision range of the pole. It is a graph which shows the relationship between the pressure fluctuation of sealed space, and time passage at the time of MDB side collision and pole side collision. It is a graph which shows the relationship of the pressure fluctuation of the sealed space at the time of the MDB side collision in a comparative example, and the pole side collision, and time passage. The vehicle side part to which the vehicle side surface collision mechanism which concerns on the modification of one Embodiment of this invention is applied is shown, (A) is an expanded longitudinal cross-sectional view corresponding to FIG. 1 which shows the deformation | transformation of the side door in a pole side collision. (B) is a side view corresponding to Drawing 2 showing a vehicle side part typically.

<Embodiment>
A vehicle side collision detection mechanism 100 and an occupant protection system 102 according to an embodiment of the present invention will be described with reference to FIGS. In each drawing, the front side in the vehicle front-rear direction is indicated by an arrow FR, the vehicle width direction outer side is indicated by an arrow OUT, and the vehicle vertical direction upper side is indicated by an arrow UP. In this embodiment, the vertical direction of the side door coincides with the vehicle vertical direction, and the thickness direction of the side door coincides with the vehicle width direction when the door is closed (the door is closed). The front-rear direction of the door coincides with the front-rear direction of the vehicle when the door is closed. Moreover, in FIG. 2, the door outer panel 14 mentioned later is not shown in figure for easy understanding.

  As shown in FIG. 1 and FIG. 2, the vehicle side portion 10 is provided with a side door 12 that opens and closes a door opening that is not shown. As shown in FIG. 2, a side glass 11 is provided above the side door 12.

  As shown in FIG. 1, on the lower edge side of the door opening (below the side door 12), in other words, a rocker 20 having a closed cross-sectional structure is provided at the lower end of both sides of the vehicle side portion 10 in the vehicle width direction. The front-rear direction is arranged as the longitudinal direction.

  The side door 12 is disposed on the outer side in the vehicle width direction below the side id glass 11 and constitutes an outer plate, and the door inner panel that is provided on the inner side in the vehicle width direction than the door outer panel 14 and constitutes an inner plate. 16. The lower edge portion of the door outer panel 14 is coupled to the lower edge portion of the door inner panel 16 by hemming. A door trim 18 is provided on the inner side of the door inner panel 16 in the vehicle width direction (vehicle compartment side).

  The side door 14 is provided with a vehicle side collision detection mechanism 100 according to an embodiment of the present invention. The vehicle side collision detection mechanism 100 includes a partition wall 110 and a pressure sensor 150 as an example of detection means.

  A partition wall portion 110 is provided at an intermediate portion in the vehicle vertical direction on the wall surface 16A on the outer side in the vehicle width direction of the door inner panel 16. The partition wall portion 110 has a box shape with a cross-sectional hat shape in which the inner side in the vehicle width direction is disposed as the opening side.

  Moreover, as shown in FIG. 2, the partition part 110 is formed in the elongate shape along the vehicle front-back direction. In the present embodiment, the partition wall 110 is slightly inclined downward in the vehicle vertical direction toward the rear side in the vehicle longitudinal direction.

  The upper and lower flange portions 112 and 114 and the left and right flange portions 116 and 118 of the partition wall 110 are joined to the wall surface 16A on the outer side in the vehicle width direction of the door inner panel 16, so that the sealed space Q is contained in the partition wall 110. (See also FIG. 1).

  In addition, the material of the partition part 110 is not limited. For example, it is possible to configure the partition 110 with an iron plate, resin, or the like. Further, the joining method for joining to the wall surface 16A is not limited. For example, it is possible to join the partition wall 110 to the wall surface 16A with an adhesive, rivets, bolts, or the like. In order to improve the sealing property of the sealed space Q, a sealing member may be sandwiched between the flange portions 112, 114, 116, 118 of the partition wall portion 110 and the wall surface 16A.

  A pressure sensor 150 is provided at a portion corresponding to the partition wall portion 110 (sealed space Q) on the inner wall surface 16B of the door inner panel 16 in the vehicle width direction. In the present embodiment, as shown in FIG. 2, the pressure sensor 150 is provided at a portion corresponding to an intermediate portion (an intermediate portion in the longitudinal direction) of the partition wall portion 110 in the vehicle front-rear direction. A detection hole 17 is formed in a portion corresponding to the partition wall portion 110 (sealed space Q) of the door inner panel 16, and the pressure sensor 150 detects pressure fluctuation through the detection hole 17. It has become.

  As the pressure sensor 150, various existing pressure sensors can be used. For example, a sensor element having a thin diaphragm is housed in a sensor housing, and a pressure that detects a pressure change based on a change in resistance value caused by strain when pressure acts in the thickness direction of the diaphragm A sensor can be used.

  As shown in FIGS. 1 and 2, a pipe-like door impact beam 180 is provided between the door outer panel 14 and the door inner panel 16 of the side door 12 and arranged in the longitudinal direction of the vehicle front-rear direction. . As shown in FIG. 2, both end portions of the door impact beam 180 in the axial direction are attached to the peripheral edge portion 16 </ b> D of the door inner panel 16 by brackets 190.

  As shown in FIG. 1, the door impact beam 180 is provided outside the long partition wall 110 in the vehicle width direction. As shown in FIG. 2, the door impact beam 180 is provided in parallel or substantially parallel to the partition wall 110. That is, like the partition wall 110, the door impact beam 180 is slightly inclined downward in the vehicle vertical direction toward the rear side in the vehicle longitudinal direction. And the door impact beam 180 is arrange | positioned in the vehicle front-back direction lower side of the elongate partition part 110 in the side view (refer also FIG. 1).

  As shown in FIG. 3, the occupant protection system 102 includes a vehicle side collision detection mechanism 100, an ECU (Electronic Control Unit) 200 as an example of an operating unit, and an airbag device 250 as an example of an occupant protection device. , Including.

  The pressure sensor 150 is electrically connected to the ECU 200. Note that the wiring 155 that electrically connects the pressure sensor 150 and the ECU 200 is disposed in a space between the wall 16B on the vehicle inner side in the vehicle width direction of the door inner panel 16 and the door trim 18 shown in FIG.

  As shown in FIG. 3, ECU 200 is electrically connected to airbag device 250. When the detection signal (detection value) sent from the pressure sensor 150 exceeds a predetermined threshold value S (see FIG. 6 described later), the ECU 200 operates the airbag device 250 to protect the occupant. It is configured.

  In addition, as the airbag apparatus 250, the side airbag apparatus and curtain airbag apparatus which are mounted in a seat back can be used, for example.

(Function and effect)
Next, functions and effects of the present embodiment will be described.

  First, as shown in FIG. 4, a bumper portion 502 of an MDB (Moving Deformable Barrier) 500, which is an example of a barrier, collides with the entire side of the vehicle in the vehicle width direction at the lower portion of the side door 12 (side collision with the barrier). ).

  When the bumper portion 502 of the MDB 500 collides with the lower part of the side door 12 as shown in FIG. A collision load is transmitted to 180 and the door impact beam 180 is deformed inward in the vehicle width direction, so that the collision energy is absorbed.

  The door outer panel 14 is deformed in its entire lower part (a wide range in the vehicle longitudinal direction of the lower part), but the deformation amount of the central part of the door outer panel 14 in the vehicle vertical direction is small. Therefore, the door outer panel 14 does not contact the partition wall portion 110 provided in the vehicle vertical direction intermediate portion, or the deformation amount of the partition wall portion 110 is small even if the door outer panel 14 contacts.

  Therefore, as shown in the graph M in FIG. 6, in the case of MDB side collision, the pressure fluctuation in the sealed space Q formed by the partition wall 110 hardly occurs, so the peak value of the pressure fluctuation is small.

  Further, in the present embodiment, the door impact beam 180 is disposed on the partition wall 110 and the vehicle front-rear direction lower side of the partition wall 110 in a side view, so that the door outer panel 14 inward in the vehicle width direction at the MDB side collision. Is prevented from being deformed. Therefore, the pressure fluctuation of the sealed space Q formed by the partition wall 110 at the MBD side collision is further reduced, and as a result, the peak value of the pressure fluctuation is further reduced.

  Next, as shown in FIG. 5, a pole side collision (a side collision with the pole) in which the side portion of the side door 12 in the vehicle width direction collides with the pole 600 will be described.

  When the side door 12 collides with the pole 600 in a side face, as shown in FIG. 5A, a part of the door outer panel 14 in the vehicle width direction is locally curved inward in the vehicle width direction, and the door passes through the door outer panel 14. The collision load is transmitted to the impact beam 180, and the door impact beam 180 is deformed in the vehicle width direction, so that the collision energy is absorbed.

  Since only part of the vehicle outer width direction of the door outer panel 14 is deformed over the entire vehicle vertical direction, the deformation amount of the central portion of the door outer panel 14 in the vertical direction of the vehicle is large. Therefore, the door outer panel 14 comes into contact with the partition wall portion 110 provided in the vehicle vertical direction intermediate portion, and the partition wall portion 110 is greatly deformed.

  Therefore, as shown in the graph P of FIG. 6, in the case of a pole-side collision, the pressure fluctuation in the sealed space Q formed by the partition wall 110 is increased, and the peak value of the pressure fluctuation is increased.

  Thus, since the difference W between the peak values of pressure fluctuations in the sealed space Q is large between the MDB side collision and the pole side collision in the vehicle side collision, the peak value of the pressure fluctuation at the side collision with the barrier and the pole By setting a threshold value with the peak value of the pressure fluctuation at the time of the side collision, it is possible to detect only the pole side collision without easily detecting the MDB side collision.

  The ECM 200 (see FIG. 3) does not operate the airbag device 250 (see FIG. 3) when the detected value does not exceed the threshold value S, and does not operate the airbag device 250 (see FIG. 3). 250 (see FIG. 3) is activated. That is, the airbag device 250 (see FIG. 3) can be operated at the time of the pole-side collision without operating the airbag device 250 (see FIG. 3) at the time of MBD collision.

  As shown in FIG. 1, the pressure sensor 150 is provided on the wall surface 16 </ b> B on the inner side in the vehicle width direction of the door inner panel 16.

  The space between the wall 16B on the vehicle width direction inner side of the door inner panel 16 and the door trim 18 is, for example, waterproof and dustproof as compared with the space between the door outer panel 14 and the door inner panel 16. Yes. Therefore, the pressure sensor 150 is provided on the inner wall surface 16B of the door inner panel 16 so that it is not necessary to take a waterproof measure or a dust preventive measure against the pressure sensor 150. Can be secured.

  Further, the wiring 155 (see FIG. 3) that electrically connects the pressure sensor 150 and the ECU 200 is provided with a space between the wall 16 </ b> B on the inner side in the vehicle width direction of the door inner panel 16 and the door trim 18. Therefore, the wiring 155 can be easily routed, and it is not necessary to take measures for waterproofing and dustproofing. Even when measures are taken, reliability is ensured by simple measures.

  Further, as shown in FIG. 2, the partition wall portion 110 has a long shape extending in the vehicle front-rear direction, so that the detection range of the pressure sensor 150 is expanded in the vehicle front-rear direction. Therefore, for example, even when the position of the pressure sensor 150 and the pole 600 is shifted in the vehicle front-rear direction at the time of a pole side collision, the pressure sensor 150 can detect a pressure fluctuation (pole side collision).

(Comparative example)
Here, the difference in pressure fluctuation between the MDB side collision and the pole side collision in the comparative example in which the partition wall portion is not provided in the central portion of the outer panel in the vehicle vertical direction, that is, the present invention is not applied will be described.

  As shown in FIG. 7, in such a configuration, there is no large difference in pressure fluctuation between the MDB side collision (graph M) and the pole side collision (graph P), and there is almost no peak value difference W. Therefore, it is very difficult to distinguish (separately) detect MDB side collision and pole side collision, and even if a threshold value S is set between these peak values, MBD is considered in consideration of variations, errors, and the like. It is very difficult to operate the airbag apparatus 250 during a side collision without operating the airbag apparatus 250 during a side collision. That is, in consideration of variations, errors, and the like, it is conceivable that the airbag device 250 is activated at the time of MBD collision.

  On the other hand, in this embodiment, as already described, as shown in FIG. 6, the difference W between the peak values of the pressure fluctuations in the sealed space Q is caused by the MDB side collision and the pole side collision in the vehicle side collision. Therefore, the MDB side collision and the pole side collision can be easily distinguished (separated) with high accuracy. In addition, by setting the threshold value S between these peak values, the air bag device 250 is not operated at the time of the MBD side collision and the air bag device at the time of the pole side collision without fail even when taking into account variations and errors. The bag device 250 can be activated.

(Modification)
Next, a modification of the present embodiment will be described with reference to FIG.

  In the modification shown in FIG. 8, the door impact beam 180 is arranged outside the long partition wall 110 in the vehicle width direction so as to overlap the partition wall 110 and the partition wall 110 in a side view.

  Therefore, as shown in FIG. 8A, the door impact beam 180 is deformed inward in the vehicle width direction in contact with the partition wall 110 at the pole side collision, and pressure variation occurs in the sealed space Q. . The deformation amount of the partition wall 110 is increased by the thickness of the door impact beam 180 in the vehicle width direction.

  Therefore, the peak value of the pressure fluctuation in the sealed space Q formed by the partition wall portion 110 at the pole-side collision is further increased, so that the detection accuracy of the pole-side collision is improved. In other words, it is possible to detect only the pole side collision without more reliably detecting the MDB side collision.

  Since door impact beam 180 is disposed obliquely downward toward the rear side in the vehicle front-rear direction, bumper portion 502 of MDB 500 and the lower end portion of door impact beam 180 wrap. Therefore, at the time of MDB side collision, the door impact beam 180 is deformed inward in the vehicle width direction and absorbs collision energy.

  In addition, the inclination angle of the door impact beam 180 is increased so that the vehicle rear end side of the door impact beam 180 is positioned further downward than shown in the figure, and the bumper portion 502 of the MDB 500 and the door impact beam 180 are You may make it wrap reliably. Alternatively, two door impact beams 180 may be provided at a position on the vehicle vertical direction lower side of the partition wall portion 110 shown in FIG. 2 and a position overlapping the partition wall portion 110 shown in FIG.

<Others>
The present invention is not limited to the above embodiment.

  For example, the partition wall portion 110 has a long shape extending in the vehicle front-rear direction, and one pressure sensor 150 is provided for one partition wall portion 110. However, the present invention is not limited to this.

  For example, a plurality of pressure sensors may be provided for one partition wall. Or the structure in which the some partition part was located in a line with the vehicle front-back direction may be sufficient.

  Moreover, it cannot be overemphasized that it can implement with a various aspect in the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 10 Vehicle side part 12 Side door 14 Door outer panel 16 Door inner panel 16A Wall surface inside the vehicle width direction of a door inner panel 16B Wall surface outside the vehicle width direction of a door inner panel 18 Door trim 100 Vehicle side collision detection mechanism 102 Crew protection system 110 Bulkhead 150 pressure sensor (an example of detection means)
180 Door impact beam 200 ECU (an example of operating means)
250 Airbag (an example of an occupant protection device)
Q sealed space

Claims (7)

A door outer panel constituting an outer plate of a side door provided on the side of the vehicle;
A door inner panel constituting the inner plate of the side door;
A partition wall portion that is provided in an intermediate portion in the vehicle vertical direction on the wall surface on the vehicle width direction outside of the door inner panel, and forms a sealed space;
Detection means for detecting pressure fluctuations in the sealed space;
A vehicle side collision detection mechanism. A door trim is provided on the inner side of the door inner panel in the vehicle width direction,
The detection means is disposed between a wall surface in the vehicle width direction of the door inner panel and the door trim.
The vehicle side collision detection mechanism according to claim 1. The partition wall is formed in an elongated shape along the vehicle longitudinal direction.
The vehicle side collision detection mechanism according to any one of claims 1 and 2. Between the door outer panel and the door inner panel, a door impact beam is provided with the vehicle longitudinal direction as the longitudinal direction,
The door impact beam is disposed on the outer side in the vehicle width direction and on the lower side in the vehicle vertical direction with respect to the partition wall.
The vehicle side collision detection mechanism according to claim 3. Between the door outer panel and the door inner panel, a door impact beam is provided with the vehicle longitudinal direction as the longitudinal direction,
The door impact beam is disposed so as to overlap the partition wall portion on the outer side in the vehicle width direction and in a side view.
The vehicle side collision detection mechanism according to claim 3. A door outer panel constituting an outer plate of a side door provided on the side of the vehicle;
A door inner panel constituting the inner plate of the side door;
The door inner panel is provided on the outer wall surface in the vehicle width direction, and is configured so that the door outer panel deformed inward in the vehicle width direction does not contact when side collision with the barrier, and inward in the vehicle width direction when side collision with the pole. A partition wall that forms a sealed space configured to contact the deformed door outer panel;
Detection means for detecting pressure fluctuations in the sealed space;
A vehicle side collision detection mechanism. The vehicle side collision detection mechanism according to any one of claims 1 to 6,
An operating means for operating the occupant protection device when the detected value of the pressure fluctuation detected by the detecting means exceeds a predetermined threshold;
Occupant protection system with.

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