JP2008222095A - Side collision sensor mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To promptly detect a side collision even when the side collision occurs to a position different from an installing position of a side collision sensor, in a side collision sensor mounting structure provided with a side collision sensor in a vehicular door. <P>SOLUTION: The side collision sensor mounting structure comprises an impact beam 14, the side collision sensor 12 provided on the vehicular door, a reinforcing member 16 extending in a door fore-and-aft direction while including the installing position of the side collision sensor 12 so as to narrow a clearance between a door outer panel 20 and a door inner panel 22, and a load transmitting member 18 capable of transmitting a side collision load F from an impact beam 14 to the reinforcing member 16. When the side collision to the position different from the installing position of the side collision sensor 12 occurs, the side collision load F is promptly inputted to the reinforcing member 16 from the impact beam 14 through the load transmitting member 18. Elastic energy released when the reinforcing member 16 is going to return to an original shape after bending is inputted in the side collision sensor 12, thereby detecting the side collision. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a side collision sensor mounting structure.

In the door inner panel, a configuration is disclosed in which a concave portion that protrudes outward in the vehicle width direction is formed in a portion that overlaps the front-rear direction intermediate portion of the impact beam in a side view, and a side collision sensor is provided at the bottom of the concave portion. (See Patent Document 1).
Japanese Patent Laid-Open No. 10-315905

  However, in the conventional example described above, the load transmission path from the impact beam to the side collision sensor is not taken into consideration, so that when a side collision occurs at a position different from the installation position of the side collision sensor, the side surface by the side collision sensor is used. It was difficult to accelerate the collision detection timing.

  In consideration of the above fact, in the side collision sensor mounting structure in which the side collision sensor is provided in the vehicle door, when the side collision occurs at a position different from the installation position of the side collision sensor, An object of the present invention is to make it possible to quickly detect the side collision.

  According to the first aspect of the present invention, there is provided an impact beam extending in the front-rear direction of the door between the door outer panel and the door inner panel in the vehicle door, and a side collision sensor provided on the vehicle door for detecting a side collision. And a reinforcing member extending in the front-rear direction of the door including the installation position of the side collision sensor so as to narrow a gap between the door outer panel and the door inner panel, and disposed at an end of the impact beam. And a load transmitting member capable of transmitting a side impact load to the reinforcing member.

  In the side collision sensor mounting structure according to claim 1, when a side collision occurs at the side collision sensor installation position, the side collision load is input to the side collision sensor via the reinforcing member, so that the side collision occurs. Detected. Since the reinforcing member is disposed so as to narrow the gap between the door outer panel and the door inner panel, the load input to the side collision sensor is performed quickly.

  When a side collision occurs at a position different from the installation position of the one side collision sensor, the side collision load is promptly input from the impact beam to the reinforcing member via the load transmission member. When the reinforcing member bends due to the side impact load, elastic energy is accumulated in the reinforcing member. And the elastic energy released when the reinforcing member tries to return to the original shape is input to the side collision sensor, whereby the side collision is detected. Therefore, even when a side collision occurs at a position different from the installation position of the side collision sensor while suppressing the deformation of the vehicle door by the impact beam, the side collision can be detected promptly.

  According to a second aspect of the present invention, in the side collision sensor mounting structure according to the first aspect, the reinforcing member and the side collision sensor are provided at a position below the door with respect to the impact beam.

  In the side collision sensor mounting structure according to claim 2, the reinforcing member and the side collision sensor are provided at a position below the door from the impact beam, that is, at a relatively high rigidity portion of the vehicle door. It is possible to suppress erroneous detection of the side collision sensor during normal use such as time. Thus, in the side collision sensor mounting structure according to the second aspect, the side collision can be detected quickly by the side collision sensor while preventing erroneous detection during normal use.

  According to a third aspect of the present invention, in the side collision sensor mounting structure according to the first or second aspect, the side collision sensor corresponds to the foremost occupant seating position on the vehicle interior side of the vehicle door for the front seat. The reinforcing member is characterized in that the front end portion is disposed corresponding to the position of the side collision sensor and the rear end portion is disposed at the rear end portion of the door.

  In the side collision sensor mounting structure according to claim 3, the side collision sensor is disposed corresponding to the foremost passenger seating position on the vehicle interior side of the vehicle door for the front seat, and the front end portion of the reinforcing member is on the side. Since it is arranged corresponding to the position of the collision sensor, when a side collision occurs in a part corresponding to the frontmost seating position of the front door vehicle door, the side collision load is applied to the front end of the reinforcing member. The side collision sensor is directly and promptly input to detect a side collision.

  Further, since the rear end portion of the reinforcing member is disposed at the rear end portion of the door, when a side collision occurs on the rear door portion of the front seat vehicle door relative to the position where the side collision sensor is installed, The impact load is quickly input to the reinforcing member. After the reinforcing member bends due to the side impact load, the elastic energy is released when trying to return to the original shape, and the elastic energy is input to the side impact sensor, thereby detecting a side collision.

  As described above, in the side collision sensor mounting structure according to the third aspect, by arranging the reinforcing member suitable for the vehicle door for the front seat, the weight of the reinforcing member can be reduced, and the weight for the front seat can be reduced. A side collision can be quickly detected in a wide range from the portion corresponding to the foremost seating position of the vehicle door to the rear of the door.

  As described above, according to the side collision sensor mounting structure according to claim 1 of the present invention, in the side collision sensor mounting structure in which the side collision sensor is provided in the vehicle door, the installation position of the side collision sensor is provided. Even when a side collision occurs at a different position, an excellent effect that the side collision can be detected quickly is obtained.

  According to the side collision sensor mounting structure of the second aspect, it is possible to obtain an excellent effect that the side collision can be quickly detected by the side collision sensor while preventing erroneous detection during normal use.

  According to the side collision sensor mounting structure according to claim 3, while reducing the weight of the reinforcing member, the side surface in a wide range of the front seat vehicle door from the portion corresponding to the foremost seating position to the rear of the door. An excellent effect that a collision can be detected quickly is obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, a side collision sensor mounting structure S according to the present embodiment relates to a mounting structure of a side collision sensor 12 applied to a front door vehicle door 10, for example, an impact beam 14 and a side collision sensor 12. And a reinforcing member 16 and a load transmitting member 18.

  The vehicle door 10 includes a door outer panel 20 on the outer side in the vehicle width direction and a door inner panel 22 on the inner side in the vehicle width direction. The outer peripheral edge portion of the door outer panel 20 and the outer peripheral edge portion of the door inner panel 22 are hemmed at portions other than the door upper portion.

  The impact beam 14 is a reinforcing member for the vehicle door 10 extending in the front-rear direction of the door between the door outer panel 20 and the door inner panel 22 in the vehicle door 10. The impact beam 14 is fixed to the door inner panel 22 using beam brackets 26 and 28 provided at both ends of the impact beam 14, and is installed in a state close to the door outer panel 20.

  The side collision sensor 12 is, for example, an acceleration sensor that is provided on the vehicle door 10 and detects a side collision, and a signal output from the side collision sensor 12 is a device that operates during a side collision, for example, a side air (not shown). It can be used as a trigger when operating a bag device or a curtain shield airbag device. The side collision sensor 12 is fixed to, for example, an inner side surface in the vehicle width direction of the door inner panel 22 at a portion of the vehicle door 10 having relatively high rigidity, for example, at a position below the door of the impact beam 14. Further, the side collision sensor 12 is disposed corresponding to the foremost occupant seating position on the vehicle interior side of the vehicle door 10. Here, the foremost occupant seating position refers to a front end portion of a seat cushion in a vehicle seat (not shown) disposed on the vehicle interior side of the vehicle door 10, and the vehicle seat is in the vehicle front-rear direction. When the vehicle seat is configured to be slidable within a predetermined range, it means the front end portion of the seat cushion when the vehicle seat is slid most forward.

  The reinforcing member 16 is, for example, a synthetic resin or metal member that extends in the front-rear direction of the door including the installation position of the side collision sensor 12 so as to narrow the gap between the door outer panel 20 and the door inner panel 22. The reinforcing member 16 may be solid, or may be partially hollow for weight reduction. The reinforcing member 16 is fixed to the outer side surface of the door inner panel 22 in the vehicle width direction, for example, at a position below the door with respect to the impact beam 14.

  In consideration of the wax application step for the joint of the lower edge of the vehicle door 10 in the manufacturing process of the vehicle door 10, the reinforcement member 16 is fixed from the inner side of the door inner panel 22 with the bolt 24, for example. It is done by fastening. Since manufacture of the vehicle door 10 is generally performed in the order of a welding process, a wax application process, and an assembly process of fixing parts such as bolts, the wax application is performed without being obstructed by the reinforcing member 16. Because you can.

  When the reinforcing member 16 is fixed to the door inner panel 22, the front end portion 16A is disposed corresponding to the position of the side collision sensor 12, and the rear end portion 16B is disposed at the door rear end portion. As described above, since the side collision sensor 12 is disposed corresponding to the foremost occupant seating position, the front end portion 16A of the reinforcing member 16 also corresponds to the foremost occupant seating position.

  The bending rigidity of the reinforcing member 16 is higher than the bending rigidity of the portion of the door inner panel 22 to which the reinforcing member 16 is fixed. This is for efficiently transmitting the side collision load to the side collision sensor 12 through the reinforcing member 16 when, for example, a side collision to the rear part of the door, which is different from the installation position of the side collision sensor 12, occurs. The height dimension and the width dimension of the reinforcing member 16 are set in consideration of the bending rigidity required for the reinforcing member 16. In order to expedite detection of a side collision, it is desirable to increase the width dimension of the reinforcing member 16 and reduce the gap between the reinforcing member 16 and the door outer panel 20.

  In the example shown in FIGS. 1 to 4, the width dimension of the reinforcing member 16 is constant, but the width dimension may be partially changed. For example, as shown in FIG. 5, the width of the reinforcing member 16 is increased toward the rear of the door, and the gap between the reinforcing member 16 and the door outer panel 20 is reduced as the distance from the installation position of the side collision sensor 12 increases. You may comprise. This is because, when a side collision occurs in a portion of the vehicle door 10 away from the position where the side collision sensor 12 is installed, the side collision can be detected earlier.

  As shown in FIG. 1, the load transmitting member 18 is a member that is disposed at the end of the impact beam 14 and that can transmit a side impact load from the impact beam 14 to the reinforcing member 16. In the present embodiment, the beam bracket 28 on the rear end side of the door also serves as the load transmission member 18. Since the load transmission member 18 is fixed to the door inner panel 22, the transmission of the side impact load from the impact beam 14 to the reinforcing member 16 at the rear portion of the vehicle door 10 is transmitted to the load transmission member 18 and the door inner panel 22. Done through. That is, “transmission of a side impact load from the impact beam 14 to the reinforcing member 16” includes not only direct transmission from the impact beam 14 to the reinforcing member 16 but also transmission through the door inner panel 22. . This is because the reinforcing member 16 is fixed to the door inner panel 22. In order to increase the transmission efficiency of the side impact load, the load transmission member 18 may be extended below the door to the height position of the reinforcing member 16. In addition to this, the load transmission member 18 may be connected to the reinforcement member 16 so that the side impact load can be directly transmitted from the load transmission member 18 to the reinforcement member 16.

(Function)
This embodiment is configured as described above, and the operation thereof will be described below. First, referring to FIG. 3A, an operation when a collision body 30 such as a pole collides with a side of the vehicle door 10 corresponding to the frontmost occupant seating position will be described. In the side collision sensor mounting structure S, when the collision body 30 collides with the door outer panel 20 of the vehicle door 10, the door outer panel 20 is deformed inward in the vehicle width direction by the side collision load F, as shown in FIG. Thus, it abuts against the reinforcing member 16.

  In the present embodiment, the reinforcing member 16 is disposed so as to narrow the gap between the door outer panel 20 and the door inner panel 22, and the side collision sensor 12 is positioned at the foremost occupant seating position on the vehicle interior side of the vehicle door 10. Further, since the front end portion 16A of the reinforcing member 16 is disposed corresponding to the position of the side collision sensor 12, the side collision load F is changed from the vicinity of the front end portion 16A of the reinforcing member 16 to the side collision. Directly and promptly input to the sensor 12. Thereby, the side collision sensor 12 detects the acceleration generated in the side collision sensor 12 and outputs it as a signal. When the acceleration value based on this signal exceeds a predetermined threshold, it is determined that a side collision has occurred. This determination is performed, for example, by a control device for a side airbag device or a curtain shield airbag device (not shown), and the side airbag device or the curtain shield airbag device is activated using a signal output from the side collision sensor 12 as a trigger. be able to.

  3A is a cross-sectional view taken along the 3A-3A arrow in FIG. 1, the impact beam 14 is not shown. However, the deformation of the vehicle door 10 toward the inner side in the vehicle width direction is the impact beam. 14 can be suppressed.

  Next, as shown in FIG. 4A, an operation when the collision body 30 such as a pole collides with the rear side of the door different from the installation position of the side collision sensor 12 will be described. 4A is a cross-sectional view taken along arrow 4A-4A in FIG. 1, and FIG. 4B shows a state in which the deformation of the door outer panel 20 has progressed from the state of FIG. 4A. 4C is a cross-sectional view taken along arrow 4C-4C in FIG. 1, and the cross-sectional position is different from FIGS. 4A and 4B. FIG. 4D shows a state where the deformation of the door outer panel 20 has progressed from the state of FIG.

  As shown in FIG. 4 (A), when the collision body 30 collides with the door outer panel 20 of the vehicle door 10, as shown in FIG. The side impact load F is transmitted from the door outer panel 20 to the impact beam 14 by being deformed inward in the direction and coming into contact with the impact beam 14. As a result, the side impact load F is transmitted from the rear end portion of the impact beam 14 to the door inner panel 22 via the load transmitting member 18 (beam bracket 28) in the direction of arrow A, and from the front end portion of the impact beam 14. It is transmitted to the door inner panel 22 through the beam bracket 26 (see FIG. 1). Here, the reinforcing member 16 is fixed to the door inner panel 22, and the rear end portion 16 </ b> B of the reinforcing member 16 is arranged at the rear end portion of the door, so that the load transmitting member 18 transmits the door inner panel 22 to the door inner panel 22. The made side impact load F is also quickly transmitted to the rear end portion 16B of the reinforcing member 16. As a result, the rear end portion 16B of the reinforcing member 16 starts to bend inward in the vehicle width direction, and accordingly, the side collision sensor 12 starts to generate acceleration.

  As shown in FIG. 4C, when the deformation of the door outer panel 20 proceeds, the door outer panel 20 contacts the reinforcing member 16. At this time, since the reinforcing member 16 is disposed so as to narrow the gap between the door outer panel 20 and the door inner panel 22, the door outer panel 20 can quickly come into contact with the reinforcing member 16. As a result, the side impact load F is directly transmitted from the door outer panel 20 to the reinforcing member 16, and the deflection of the reinforcing member 16 is further increased, and the acceleration generated in the side impact sensor 12 is also increased.

  Then, as shown in FIG. 4D, when the speed of the collision body 30 and the deformation speed of the vehicle door 10 become substantially equal, the reinforcing member 16 tries to return to the original shape. When the elastic energy released at this time is input to the side collision sensor 12, the acceleration generated in the side collision sensor 12 is further increased, and the side collision is detected when the acceleration value exceeds a predetermined threshold value. Is done.

  As shown in FIG. 5, the width dimension of the reinforcing member 16 is increased toward the rear of the door, and the clearance between the reinforcing member 16 and the door outer panel 20 becomes smaller as the distance from the installation position of the side collision sensor 12 increases. When configured in this manner, the door outer panel 20 abuts on the reinforcing member 16 earlier, so that a side collision can be detected earlier.

  Thus, in the side collision sensor mounting structure S, even when a side collision occurs at a position different from the installation position of the side collision sensor 12 while the deformation of the vehicle door 10 is suppressed by the impact beam 14, the side surface A collision can be detected promptly. Further, in the side collision sensor mounting structure S, the reinforcement member 16 suitable for the front seat vehicle door 10 is disposed, so that the weight of the reinforcement member 16 is reduced and the front seat vehicle door 10 is provided. Of these, a side collision can be quickly detected in a wide range from the portion corresponding to the foremost seating position to the rear of the door, that is, the passenger seating range. Further, in the side collision sensor mounting structure S, the reinforcing member 16 and the side collision sensor 12 are provided in a relatively rigid portion of the vehicle door 10, for example, at a position below the door relative to the impact beam 14. Misdetection of the side collision sensor 12 during normal use such as time can be suppressed. And by detecting a side collision earlier in this way, a side airbag apparatus, a curtain shield airbag apparatus, etc. can be operated earlier.

  Note that a side collision from the rear end portion 16B of the reinforcing member 16 to the rear of the vehicle can be detected by providing a side collision sensor (not shown) on the B pillar or the rear door.

  In the present embodiment, the beam bracket 28 also serves as the load transmission member 18, but the function of the load transmission member 18 is not limited to the beam bracket 28. As shown in FIG. The vertical wall portion 22 </ b> A of the door inner panel 22 located on the inner side in the vehicle width direction at the rear end of 14 also functions as the load transmission member 18. For this reason, the load transmission member 18 is not limited to the beam bracket 28.

  In the present embodiment, the side collision sensor mounting structure S has been described as being applied to the front seat vehicle door 10. However, the present invention is not limited to this, and the side collision sensor mounting structure S is a rear seat vehicle. It is also possible to apply to an industrial door. The type of door may be a sliding door as well as a hinged door.

It is a partially broken front view which shows the state which looked at the vehicle door which has a side collision sensor attachment structure from the vehicle interior side. FIG. 2 is an enlarged sectional view taken along arrow 2-2 in FIG. 1 showing a side collision sensor mounting structure. (A) It is a 3A-3A arrow sectional drawing in FIG. 1 which shows the state of the moment when the collision body side-collised to the site | part corresponding to the foremost passenger seating position in a vehicle door. (B) It is sectional drawing which shows the state which the door outer panel deform | transformed and contact | abutted to the reinforcement member and the side collision load was directly input into the side collision sensor via this reinforcement member. (A) It is a 4A-4A arrow directional cross-sectional view in FIG. 1 which shows the state of the moment when the collision body collided with the door rear part of the door for vehicles. (B) It is sectional drawing which shows the state which the door outer panel deform | transformed and contact | abutted to an impact beam and a side impact load is transmitted to a door inner panel via a load transmission member, and, thereby, the reinforcement member began to bend. FIG. 4C is a cross-sectional view taken along the 4C-4C arrow in FIG. 1 showing a state in which the deflection of the reinforcing member is further increased by further deforming the door outer panel and coming into contact with the reinforcing member. (D) It is sectional drawing which shows the state which the speed of the collision body and the deformation | transformation speed of the vehicle door became substantially equal, and the elastic energy of the reinforcement member was released and it returned to the original state. It is an expanded sectional view which shows the modification which changed the shape of the reinforcement member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle door 12 Side collision sensor 14 Impact beam 16 Reinforcement member 16A Front end part 16B Rear end part 18 Load transmission member 20 Door outer panel 22 Door inner panel F Side collision load S Side collision sensor mounting structure

Claims (3)

An impact beam extending in the front-rear direction of the door between the door outer panel and the door inner panel in the vehicle door;
A side collision sensor provided on the vehicle door for detecting a side collision;
A reinforcing member extending in the front-rear direction of the door including the installation position of the side collision sensor so as to narrow a gap between the door outer panel and the door inner panel;
A load transmitting member disposed at an end of the impact beam and capable of transmitting a side impact load from the impact beam to the reinforcing member;
A side impact sensor mounting structure characterized by comprising:   The side collision sensor mounting structure according to claim 1, wherein the reinforcing member and the side collision sensor are provided at a position below the door with respect to the impact beam. The side collision sensor is disposed corresponding to the foremost occupant seating position on the vehicle interior side of the vehicle door for the front seat,
3. The reinforcing member according to claim 1, wherein a front end portion of the reinforcing member is disposed corresponding to a position of the side collision sensor, and a rear end portion is disposed at a door rear end portion. Side impact sensor mounting structure.

Images