JP3484925B2 - Body structure for side collision detection sensor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a rocker, a center pillar on which a side collision detection sensor is arranged, a front floor cross member, and a front side door hinged to the front pillar. And a body structure for a side collision detection sensor.

[0002]

2. Description of the Related Art In recent years, occupant protection performance can be improved by operating an occupant protection device (for example, a side airbag device or a head protection airbag device) at the time of a collision with the side surface of an automobile body. It is being promoted. In order to operate this type of occupant protection device, it is naturally necessary to provide a sensor for detecting the state of collision with the side surface of the vehicle body. As one of the measures, it is proposed to dispose a side collision detection sensor in the closed cross section of the center pillar, and the mechanism will be briefly described below.

As shown in FIG. 13, a rocker 10 having a closed cross-section structure including a rocker outer panel 100 and a rocker inner panel 102 at a lower end portion of a vehicle body side portion.
4 is arranged with the longitudinal direction of the vehicle. A lower end portion of a center pillar 110 including a pillar outer panel 106 and a pillar inner panel 108 is coupled to an intermediate portion in the longitudinal direction of the rocker 104.
Further, the rocker 104 and the center pillar 110 described above.
In addition, the door outer panel 11 is provided at a position surrounded by the front pillar and the roof side rail (not shown).
A front side door 116 including two and a door inner panel 114 is arranged so as to be openable and closable.

An opening 118 for mounting a webbing retractor (not shown) is formed at a lower end portion of the pillar inner panel 108 of the center pillar 110 described above, and a side collision detection sensor is provided at an intermediate portion of the pillar inner panel 108. An opening 120 is formed for attaching the. Then, a side collision detection sensor (acceleration sensor) is attached to the formation position of the opening 120 via a bracket (not shown).

According to the above structure, when the automobile 122 collides with the front side door 116 at an angle (with the direction of arrow A as the entry direction), first the front side door 11 is hit.
The lower end portion 116 </ b> A of the door of No. 6 abuts on the upper outside of the rocker outer panel 100. As a result, the rocker outer panel 1 is removed from the lower end 116A of the front side door 116.
The acceleration is transmitted to the upper part of 00. Next, rocker 104
The acceleration transmitted to the center pillar 110 connected to the rocker 104 is transmitted to the center pillar 110. As a result, the acceleration is transmitted to and sensed by the side collision detection sensor fixed to the pillar inner panel 108 of the center pillar 110 (the transmission path of the acceleration G is indicated by an arrow B).

[0006]

However, in the case of the above construction, since the rigidity of the lower end portion of the front side door 116 is low, when the automobile 122 obliquely collides with the front side door 116, the lower end portion 116A of the door is hit. May bend toward the vehicle interior at the middle portion in the front-rear direction, and the lower end portion 116A of the door may come off from the upper outer portion of the rocker outer panel 100 relatively early. In this case, since the acceleration transmitted from the lower end portion 116A of the door to the rocker 104 becomes small (the acceleration to be transmitted is lost), the detection time by the side collision detection sensor (the high load action state is detected by the side collision detection sensor). Means time to
Hereinafter, in the present specification, the term “detection time by the side collision detection sensor” is used in that meaning) but is longer than the allowable range. Therefore, there is a demand to shorten the detection time of the side collision detection sensor.

In view of the above facts, an object of the present invention is to obtain a body structure for a side collision detection sensor which can detect a collision state with a front side door in a short time.

[0008]

According to a first aspect of the present invention, a rocker is arranged at a lower end portion of a side portion of a vehicle body in the longitudinal direction of the vehicle, and a lower end portion is provided near an intermediate portion in the longitudinal direction of the rocker. The center pillar, which is coupled with the side collision detection sensor, which is an acceleration sensor, is arranged on the lower side, and is arranged in the vehicle width direction in the longitudinal direction, and is located in front of the lower end of the center pillar on the inside of the rocker. A side collision detection sensor including a front floor cross member whose longitudinal end is coupled to a predetermined position on the side, and a front side door which is hinge-coupled to a front pillar and which opens and closes a door opening. A body structure for a vehicle, which is in the lower part of the inside of the front side door within a range that wraps in the vehicle up-down direction with respect to the outer upper part of the rocker, and R and at the lower end of the intermediate portion near to the center pillar between the front floor cross member
A reinforcing member having a predetermined strength against the side load on the door outer panel of the front side door is set in a range extending over the front end of the front side door, and the reinforcing member is a front support member.
Guides are installed at the bottom of the outer surface of the door inner panel.
Install it with a specified gap to the outer panel.
In addition, the reinforcing member is located inside the door to the left and right.
It has an upper surface that extends along the transverse direction.
The first upper surface for increasing the rigidity in the vehicle width direction
The feature is that the reinforcement part is set .

[0009]

[0010]

[0011] Claim 2 Body structure for a side collision detection sensor according to the present invention described is the invention according to claim 1, wherein the reinforcing member is a side extending along a direction longitudinal internal door back and forth And a second reinforcing portion for increasing the rigidity in the vehicle width direction is set on the side surface portion.

According to a third aspect of the present invention, there is provided a body structure for a side collision detection sensor according to the first or second aspect of the present invention, wherein each of the rockers has a substantially hat-shaped cross section and faces each other. It is configured to include the rocker outer panel and rocker inner panel to be placed,
A third part for increasing the rigidity of the upper end flange portion in the direction in which the upper end flange portion leans toward the passenger compartment in a region where the upper surface flange and the upper end flange portion of the rocker inner panel are connected to each other and in a range overlapping the reinforcing member in the vehicle front-rear direction. The feature is that the reinforcement part is set.

According to the present invention described in claim 1, flon
To the inside bottom of the Toside door and to the outside top of the rocker
Within the range that wraps vertically in the vehicle,
Near the middle of the floor and the front floor cross member
NtapillarRange extending to the front end of R part at the lower end
Side load on the door outer panel of the front side door.
I set a reinforcing member with a certain strength against the weight
And, the inner lower part of the front side door is reinforced within the above range.
To be done.

Therefore, when an automobile or the like collides obliquely with the outer panel of the front side door, the lower portion (particularly, the lower end portion) of the front side door may not bend toward the vehicle interior at the intermediate portion in the front-rear direction. Instead, each bends toward the vehicle interior side at the front-rear boundary of the set range of the reinforcing member. Therefore, the lower part (particularly the lower end part) of the front side door is translated into a substantially trapezoidal shape as a whole toward the passenger compartment,
Abut on the outside upper part of the rocker. For this reason, it is possible to make it difficult for the lower portion (particularly, the lower end portion) of the front side door door to come out from the upper outer portion of the rocker. As a result, the loss of acceleration transmitted from the lower part of the front side door to the upper outer part of the rocker can be reduced. Therefore, the acceleration applied to the outer panel of the front side door can be efficiently transmitted from the lower portion (particularly, the lower end portion) of the front side door to the center pillar via the outer upper portion of the rocker.

Further , according to the present invention, since the reinforcing member is attached to the lower portion of the outer side surface of the door inner panel of the front side door with a predetermined gap from the door outer panel, the door outer panel and the reinforcing member are provided. It is possible to secure a free running distance when the door outer panel is deformed.

Further , according to the present invention, the reinforcing member comprises:
It has an upper surface that extends along the direction that crosses the inside of the door to the left and right, and since the first reinforcing portion for increasing the rigidity in the vehicle width direction is set on the upper surface, it is diagonal to the outer panel of the front side door. When an automobile or the like collides with the vehicle, it is possible to suppress the collapse of the cross section of the lower portion (particularly, the lower end portion) of the front side door. Therefore, it is possible to reduce the loss of acceleration transmitted to the upper outside of the rocker.

According to the second aspect of the present invention, the reinforcing member is provided with the side surface portion extending along the direction longitudinally crossing the inside of the door, and the side surface portion enhances the rigidity in the vehicle width direction. Since the second reinforcing portion is provided for preventing the vehicle from colliding with the outer panel of the front side door at an angle, the side portion of the reinforcing member is prevented from bending toward the vehicle interior at the intermediate portion in the front-rear direction. be able to. Therefore, it is possible to reduce the loss of acceleration transmitted to the upper outside of the rocker.

According to the third aspect of the present invention, the rocker comprises a rocker outer panel and a rocker inner panel, each of which has a substantially hat-shaped cross section and is arranged to face each other. A third reinforcing portion for increasing the rigidity of the upper end flange portion in the inward direction of the vehicle interior is set in a region where the upper face flange portion and the upper end flange portion are connected to each other and in a range overlapping the reinforcing member in the vehicle front-rear direction. Therefore, when an automobile, etc. collides diagonally with the outer panel of the front side door, and the lower part of the front side door (especially the lower end part) comes into contact with the outer upper part of the rocker, the upper flange part of the rocker inner panel The third reinforcing portion can prevent the vehicle body from falling toward the inside. Therefore, it is possible to further reduce the loss of acceleration transmitted to the upper outside of the rocker.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

First, the body structure around the front side door will be outlined. As shown in FIGS. 4 to 6,
A rocker 10 is arranged at a lower end portion of a vehicle body side portion, with the longitudinal direction of the vehicle being the longitudinal direction. In particular, as shown in FIG. 6, the rocker 10 is structurally composed of a rocker outer panel 12 arranged outside the vehicle compartment and a rocker outer panel 12 arranged inside the rocker outer panel 12 to reinforce the rocker outer panel 12. Reinforce 14
(The illustration thereof is omitted in FIG. 4) and a rocker inner panel 16 which is arranged on the vehicle interior side of the rocker outer reinforcement 14 and forms a substantially rectangular closed cross section with the rocker outer reinforcement 14. ing.

The rocker outer panel 12 includes an upper surface portion 12A and a lower surface portion 1 which are arranged substantially parallel to the vehicle width direction in a sectional view.
2B, a side surface portion 12C connecting the outer ends of the upper surface portion 12A and the lower surface portion 12B to each other, an upper surface portion 12A and a lower surface portion 12
The upper end flange portion 12D and the lower end flange portion 12E, which are bent in directions away from each other from the inner end of B, are formed in a substantially hat-shaped cross section. Similarly, the rocker outer reinforcement 14 also has an upper surface portion 14A and a lower surface portion 14B.
And a side surface portion 14C, and an upper end flange portion 14D and a lower end flange portion 14E are formed in a substantially hat-shaped cross section. Further, the rocker inner panel 16 also has the upper surface portion 1
6A and a lower surface portion 16B, a side surface portion 16C, an upper end flange portion 16D and a lower end flange portion 16E are formed in a substantially hat-shaped cross section. Then, each of the upper flange portions 12D, 14D, 16D and the lower flange portions 12E, 14E, 16E are overlapped with each other in three layers, and spot welded to each other, whereby the rocker outer panel 12 and the rocker outer panel 12 are formed. The rocker 10 is formed by integrating the reinforcement 14 and the rocker inner panel 16.

Further, as shown in FIGS. 5 and 8, the lower end of the front pillar 18 is connected to the front end side of the rocker 10 described above, and the center pillar 20 is connected to the middle portion in the longitudinal direction of the rocker 10. The lower end of is connected. The upper end of the front pillar 18 and the center pillar 20
The upper end portion of is connected to a roof side rail (not shown) arranged along the vehicle front-rear direction at the upper end portion of the vehicle body side portion.

Returning to FIG. 4, the center pillar 20 described above is used.
Is a pillar outer panel 22 arranged outside the passenger compartment,
The pillar outer panel 22 and the pillar inner panel 24 arranged on the vehicle interior side are configured to have a closed cross-section structure. In addition, each member is formed in a substantially hat-shaped cross section.

On the lower side of the pillar inner panel 24, rectangular openings 26 are vertically arranged side by side. The opening 26 formed on the lower end side is for attaching a webbing retractor (not shown), and the webbing retractor is fixed to the pillar inner panel 24 by passing through the opening 26. A side collision detection sensor 30, which is an acceleration sensor, is attached to another opening formed above the opening 26 via a bracket 32.

A front floor cloth is disposed at a predetermined position on the front side of the rocker inner panel 16 described above (a position on the front side of the vehicle by a predetermined distance from the lower end of the center pillar 20) with the vehicle width direction as the longitudinal direction. Member 34
The ends in the longitudinal direction are fixed by spot welding. Further, at a predetermined rear position of the rocker inner panel 16 (a position on the rear side of the vehicle by a predetermined distance from the lower end portion of the center pillar 20), the longitudinal length of the center floor cross member 36 arranged with the vehicle width direction as the longitudinal direction. The ends in the direction are fixed by spot welding. The front floor cross member 34 and the center floor cross member 36 are both formed in the same shape (substantially hat-shaped cross section with the vehicle lower side open).

As shown in FIG. 8, the rocker 1 described above is used.
0, the front pillar 18, the center pillar 20, and a door opening 38 surrounded by a roof side rail (not shown), a front side door 40 is provided. The front side door 40 is attached to the front pillar 18 so as to be openable and closable via a door hinge.

As shown in FIGS. 1 and 3, the front side door 40 includes a door outer panel 42 arranged outside the vehicle compartment and a door inner panel 44 arranged inside the vehicle interior with respect to the door outer panel 42. And are included. The upper end flange portion 42A of the door outer panel 42 and the upper end flange portion 44A of the door inner panel 44 are arranged so as to be separated by a predetermined distance, and the door glass 45 (see FIG. 9) is moved up and down by the window regulator. ing. Further, the lower end flange portion 42B of the door outer panel 42 and the lower end flange portion 44B of the door inner panel 44 are joined by hemming (see FIG. 3). Furthermore, the door outer panel 42
Between the door inner panel 44 and the door inner panel 44, a pipe-shaped impact beam 46 for reinforcement, which is arranged with the front-rear direction of the door as a longitudinal direction, is arranged.

Further, as shown in FIG. 1, the above-described door inner panel 44 is wholly recessed toward the vehicle interior except the outer peripheral portion for accommodating a window regulator and the like, and a shelf on the lower end side thereof. A reinforcing member 48 is arranged at a predetermined position of the portion 44C. Hereinafter, the configuration of the reinforcing member 48, which is the main part of the present embodiment, and the configuration related thereto will be described in detail.

As shown in an enlarged manner in FIG. 2, the reinforcing member 48 includes an upper surface portion 48A extending along a direction (door thickness direction; vehicle width direction) transversely traversing the inside of the door, and the inside of the door. A side surface portion 48B extending along a direction that longitudinally crosses the front and rear (door front and rear direction / vertical direction; vehicle front and rear direction), and a stepped step portion 48C provided on the front and rear end sides of the upper surface portion 48A.
And a plurality of mounting portions 48D that are appropriately raised from the predetermined position (front end portion, rear end portion, intermediate portion) of the end portion of the upper surface portion 48A on the vehicle interior side or extended in the front-rear direction. ing.

The step 48C of the reinforcing member 48 is placed on the shelf 44C (see FIG. 1) of the door inner panel 44 described above, and the side surface 48B is bent downward from the outer end of the shelf 44C. The side surface portion 48B and the plurality of mounting portions 48D are drooped in a state of being in contact with the hanging portion 44D and further being in contact with the rising portion 44E that is bent upward from the inner end of the shelf portion 44C. 44D and rising portion 44E
The door inner panel 44 is attached to the lower end portion of the door inner panel 44 outside the vehicle compartment by being fixed by a fixing means such as spot welding or screwing.

The setting range of the reinforcing member 48 is set as follows. The setting range with respect to the vehicle up-down direction includes the position where the rocker outer panel 12 overlaps the upper surface portion 12A, and the door glass 45 when fully opened.
The lower edge (the lower edge of the door glass 45 at the lowest position) does not interfere with the position (the vertical range indicated by Z in FIG. 8). Further, the setting range with respect to the vehicle front-rear direction is set in the vicinity of an intermediate portion between the front pillar 18 and the front floor cross member 34 (a portion indicated by a line P in FIG. 4) to a front end of the R portion at a lower end portion of the center pillar 20 (see FIG. 4). It is set as a range (a range in the front-rear direction indicated by a hatched portion X in FIG. 4) over a section indicated by the arrow Q).

Further, as shown in FIG. 2, the reinforcing member 4
A pair of first beads 50 extending along the vehicle width direction are formed on the upper surface portion 48A of No. 8. Further, the side surface portion 48B of the reinforcing member 48 is provided with a single second bead 52 extending in the vehicle front-rear direction. In addition to the reinforcing member 48, a plurality of third beads 54 each having a triangular shape are provided at predetermined intervals along the vehicle front-rear direction at a connecting portion between the upper surface portion 16A and the upper end flange portion 16D of the rocker inner panel 16 described above. Is formed (see FIGS. 5 to 7). The setting range of the third bead 54 with respect to the vehicle front-rear direction is set as a range overlapping with the setting range of the reinforcing member 48 in the vehicle front-rear direction (a range overlapping with the side view).

Next, the operation and effect of this embodiment will be described. First, in the case of the present embodiment, which part of the automobile is reinforced and how is reinforced.

First, according to the present embodiment, the upper surface portion 48A and the side surface portion 48B having a substantially L-shaped cross section are formed at the outer lower end portion of the door inner panel 44 in the front side door 40.
Since the reinforcing member 48 provided with is disposed, a substantially rectangular closed cross-section portion is formed at the outer lower end portion (see FIG. 3). For this reason, the outer lower end portion of the door inner panel 44 itself has high rigidity.

Secondly, according to the present embodiment, the reinforcing member 48 itself is also made highly rigid for the following reasons. That is,
Since the pair of first beads 50 extending along the vehicle width direction are formed on the upper surface portion 48A of the reinforcing member 48, the rigidity of the upper surface portion 48A in the vehicle width direction is high. Further, in the side surface portion 48B of the reinforcing member 48, since the single second bead 52 extending along the vehicle front-rear direction is formed, the rigidity of the side surface portion 48B in the vehicle front-rear direction, and thus the rigidity in the vehicle width direction. Is high, which makes it difficult for the side surface portion 48B to bend toward the vehicle interior at the intermediate portion in the front-rear direction.

Thirdly, according to this embodiment, a plurality of third beads 54 each formed in a substantially triangular shape are formed in the connecting portion between the upper surface portion 16A and the upper end flange portion 16D of the rocker inner panel 16 in the vehicle front-rear direction. Since the rocker 10 is formed at predetermined intervals along the upper end, the upper end flange portion of the rocker 10 (that is, the upper end flange portion 12D of the rocker outer panel 12, the upper end flange portion 14D of the rocker outer reinforcement 14 and the upper end flange portion of the rocker inner panel 16). 16D)
It does not easily fall into the passenger compartment. Therefore, according to the present embodiment, the upper end flange portion of the rocker 10 itself has high rigidity.

Next, based on the above-described reinforcement effect being obtained, how the side collision detection sensor 3 is operated when a predetermined high load is obliquely applied to the front side door 40.
It will be described whether the acceleration is transmitted to 0.

As shown in FIGS. 9 and 11 (A), when another vehicle 58 collides with the front side door 40 of the vehicle 56 of this embodiment with the direction of arrow A as the entry direction, first, the front The door outer panel 42 of the side door 40 is slightly deformed toward the vehicle interior side within a gap 60 (see FIG. 3) which is an idle distance provided between the side surface portion 48B of the reinforcing member 48 and the door outer panel 42. Come on. By ensuring the idling distance, it is possible to ensure the inoperability of the occupant protection device when the acceleration acting on the door outer panel 42 is relatively small.

Next, the door outer panel 42 contacts the side surface portion 48B of the reinforcing member 48, but the side surface portion 48B is reinforced by the second bead 52, and the side surface portion 48B is connected by the first bead 50. Since the reinforcing member 48 is supported by the reinforced upper surface portion 48A, the side surface portion 48B of the reinforcing member 48 is suppressed from bending toward the vehicle interior at the front-rear intermediate portion thereof. Therefore, as shown in FIG. 11B, the door outer panel 42 has the reinforcing member 48.
At the boundary part in the front-rear direction of the setting range of, each is bent toward the passenger compartment. Therefore, the lower end of the front side door 40 moves in parallel to the inside of the vehicle as it is, penetrates into the inside of the vehicle in a substantially trapezoidal shape, and abuts on the outside upper side of the rocker 10.

At this time, a contact reaction force acts from the outer upper side of the rocker 10 to the lower end of the door inner panel 44.
As described above, since the pair of first beads 50 are formed on the upper surface portion 48A of the reinforcing member 48 to enhance the rigidity in the vehicle width direction, a cross section (reinforcing member 48 and door) is formed at the lower end portion of the door inner panel 44. The collapse of the closed cross section formed with the inner panel 44 is suppressed. Further, since the upper end flange portion of the rocker 10 is less likely to fall toward the vehicle interior side, the lower end portion of the front side door 40 is less likely to come off the upper end flange portion of the rocker 10 (see FIG. 10). From these things, according to this embodiment, the acceleration is transmitted to the upper outside of the rocker 10 with almost no loss.

Here, the following effects can be obtained by setting the setting range of the reinforcing member 48 in the vertical direction of the vehicle and the setting range of the longitudinal direction of the vehicle to the ranges described above. That is, in the present embodiment, the setting range of the reinforcing member 48 in the vehicle vertical direction is set to the rocker outer panel 1
The range (the range indicated by Z in FIG. 8) including the position where it overlaps the upper surface portion 12A of No. 2 is defined, but the significance thereof is that the acceleration with less loss is surely ensured at the outer upper portion of the rocker 10 in relation to the heights of the members. It's about communicating. Although there is a limit to the setting range of the reinforcing member 48 in the vertical direction of the vehicle, it is limited to a position where it does not interfere with the lower edge of the door glass 45 when fully opened. This is a limitation due to the nature.

Further, in this embodiment, the setting range of the reinforcing member 48 in the vehicle front-rear direction is set from the vicinity of the intermediate portion between the front pillar 18 and the front floor cross member 34 (the portion viewed from the arrow P in FIG. 4) to the center pillar 20. R at the bottom
Although it is set as a range (a range shown as a hatched portion X in FIG. 4) over the front end of the front portion (a portion indicated by an arrow Q in FIG. 4), its significance is to secure the vehicle body rigidity in the vehicle width direction as in the present embodiment. From the viewpoint of adopting a body structure in which the front floor cross member 34 is disposed, the rocker inner panel 1
The point 6 is that the amount of movement of 6 to the passenger compartment side becomes maximum in the shaded portion X. In other words, rocker inner panel 16
Since the front floor cross member 34 serves as a support, the amount of movement toward the inside of the vehicle is relatively small at the connection portion of the center floor 20 with the front floor cross member 34. Since the cross-section changes abruptly at the front end, it tends to become the starting point of deformation, and in front of it, it is the farthest position from the front pillar 18 and the front floor cross member 34, and the middle part of both members which is also the position where no support member can be obtained. The area around it is easily deformed toward the passenger compartment.

Therefore, if only the rocker 10 is viewed, the amount of movement to the inside of the vehicle is greatest in the shaded X portion. Then, by transmitting the acceleration with less loss from the lower end portion of the front side door 40, which has been deformed into a substantially trapezoidal shape, to the portion that is easily moved, the oblique line X portion of the rocker 10 can be moved very quickly and effectively. It can be moved indoors.
As a result, the pillar inner panel 24 of the center pillar 20 provided with the side collision detection sensor 30 can be moved to the vehicle interior side very early and effectively.

As can be seen from the characteristic diagram shown in FIG. 12, according to this embodiment, the front side door 40
The contact load from the lower end portion of the rocker 10 to the outer upper portion of the rocker 10 can be increased (raised) very quickly.

As described above, according to this embodiment, the detection time by the side collision detection sensor 30, which is an acceleration sensor, can be made extremely short, and as a result, the state of collision with the front side door 40 can be detected in a short time. be able to.

Further, since the transmission loss of acceleration is small, it is not necessary to dispose side collision detection sensors at a plurality of positions to compensate for this. Therefore, it is possible to reduce the number of parts, which in turn leads to cost reduction.

Further, according to the present embodiment, as described above, the front side door 40 does not bend to the vehicle interior side at the front-rear intermediate portion thereof, so the front side door 40 enters the vehicle interior side. The amount can be reduced.

The occupant protection device operated by the side collision detection sensor 30 used in the present embodiment is targeted at the airbag for occupant head protection that bulges like a curtain along the pillar portion and the roof side rail portion. There is a side airbag device for protecting the occupant's chest and abdomen that is inflated from the device, the front side door, or the seat back.

Further, in this embodiment, the reinforcing member 4 is provided at the outer lower end portion of the door inner panel 44 of the front side door 40 corresponding to the hatched portion X where the amount of movement to the vehicle interior side is the largest.
8 is provided, but not limited to this, the diagonal Y portion (see FIG. 4), which is wider than the diagonal X portion, corresponds to the diagonal Y portion because the amount of movement toward the vehicle interior side is reasonable. Alternatively, the reinforcing member may be arranged within that range.

Further, in the present embodiment, the door outer panel 4 is provided in order to prevent the occupant protection device from operating when a low load is applied.
Although the gap 60 that functions as the two free running distances is set between the side surface portion 48B of the reinforcing member 48, it is not always necessary to have such a configuration, and the gap may not be provided. In this case, a weak portion for absorbing energy, which performs the same function as the gap 60, may be set on the outer end side of the upper surface portion 48A of the reinforcing member 48.

Further, in this embodiment, the first reinforcing portion and the second reinforcing portion
Although the first bead 50, the second bead 52, and the third bead 5 are adopted as the reinforcing part and the third reinforcing part, respectively, the invention is not limited to this, and any structure having an equivalent reinforcing function can be applied.

[0052]

As described above, the present invention according to claim 1
The body structure for the side collision detection sensor according to Ming
To the inside bottom of the Toside door and to the outside top of the rocker
Within the range that wraps vertically in the vehicle,
Near the middle of the floor and the front floor cross member
NtapillarRange extending to the front end of R part at the lower end
Side load on the door outer panel of the front side door.
I set a reinforcing member with a certain strength against the weight
So, acceleration added to the outer panel of the front side door
Degree from the lower edge of the front side door to the upper outside of the rocker
Can be efficiently transmitted to the center pillar via
As a result, the state of collision with the front side door can be quickly
It has an excellent effect that it can be detected.

Aspects of the present invention according to claim 1
In the body structure for a collision detection sensor, the reinforcing member is attached to the lower portion of the outer surface of the door inner panel of the front side door with a predetermined gap with respect to the door outer panel. This has an excellent effect that the idling distance of the door outer panel can be secured, and as a result, the inactivity of the occupant protection device can be secured when the acceleration acting on the door outer panel is relatively small.

Further, the side according to the present invention according to claim 1
In the body structure for a surface collision detection sensor, the reinforcing member includes an upper surface portion extending along a direction transversely crossing the inside of the door, and the upper surface portion has first reinforcement for increasing rigidity in the vehicle width direction. Since the parts are set, it is possible to reduce the transmission loss of acceleration due to the collapse of the cross section of the lower end of the front side door, and as a result, it is possible to detect the state of collision with the front side door in an even shorter time. Have an effect.

[0055] Body structure for a side collision detection sensor according to the present invention described in claim 2 is the invention according to claim 1, the reinforcing member, the side surface portion extending along a direction longitudinal internal door back and forth Since the second reinforcing portion for increasing the rigidity in the vehicle width direction is set on the side surface portion, it is possible to reduce the transmission loss of acceleration due to bending at the middle portion of the side surface portion of the reinforcing member, As a result, there is an excellent effect that the state of collision with the front side door can be detected in a shorter time.

According to a third aspect of the present invention, in the body structure for a side collision detection sensor according to the first aspect or the second aspect , the rockers have substantially hat-shaped cross sections and are arranged to face each other. The rocker outer panel and the rocker inner panel that are configured to include the rocker inner panel, the upper surface of the rocker inner panel is connected to the upper end flange portion, and the reinforcing member and the vehicle front-rear direction, in the range that overlaps the upper end flange portion. Since the third reinforcing portion is set to increase the rigidity in the direction of the vehicle interior collapse, it is possible to reduce the transmission loss of acceleration due to the collapse of the upper end flange portion of the rocker inner panel into the vehicle interior side. Therefore, it has an excellent effect that the state of collision with the front side door can be detected in a shorter time.

[Brief description of drawings]

FIG. 1 is a perspective view showing a door outer panel, a reinforcing member, and a door inner panel in the present embodiment, which are separated from each other.

FIG. 2 is an enlarged perspective view of a reinforcing member shown in FIG.

FIG. 3 is a cross-sectional view showing the front side door in an assembled state with a part of the vertical cross-sectional structure omitted.

FIG. 4 is a perspective view showing a rocker, a center pillar, a front floor cross member, and a center floor cross member in the present embodiment.

FIG. 5 is a side view showing a body structure around a door of a front side door as viewed from the inside of the vehicle compartment.

6 is an enlarged view of the vertical sectional structure of the rocker, 6- in FIG.
It is sectional drawing which follows the 6 line.

FIG. 7 is an enlarged cross-sectional view taken along line 7 of FIG. 6 showing an enlarged third bead set on the rocker inner panel.

FIG. 8 is a side view showing a positional relationship between a reinforcing member arranged in the front side door and the rocker with respect to the vehicle vertical direction, as viewed from the outside of the vehicle compartment.

FIG. 9 is a plan view showing a state in which another vehicle has obliquely collided with the front side door of the vehicle of the present embodiment.

FIG. 10 is an explanatory diagram for explaining the operation of the present embodiment when the front side door receives a load.

FIG. 11 is an explanatory diagram for explaining the operation of the present embodiment when the front side door receives a load.

FIG. 12 is a graph showing an effect when the structure of the present embodiment is used.

FIG. 13 is a perspective view showing a conventional body structure.

[Explanation of symbols]

10 rocker 12 rocker outer panel 16 rocker inner panel 16A upper surface 16D upper end flange 18 front pillar 20 center pillar 30 side collision detection sensor 34 front floor cross member 38 door opening 40 front side door 42 door outer panel 44 door inner panel 48 reinforcement member 48A Top surface portion 48B Side surface portion 50 First bead (first reinforcing portion) 52 Second bead (second reinforcing portion) 54 Third bead (third reinforcing portion) 60 Gap

─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shigeaki Kurokawa 1 Toyota-cho, Toyota-shi, Aichi Toyota Motor Co., Ltd. (56) References JP-A-8-183341 (JP, A) JP-A-8-11535 (JP, A) JP-A-9-123869 (JP, A) Actually developed 3-8070 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60J 5/00 B60R 21 / 22 B60R 21/32 B62D 25/20 G01P 15/00

Claims (3)

(57) [Claims] 1. A rocker arranged at a lower end portion of a vehicle body side portion in the longitudinal direction of a vehicle, and a side collision having a lower end portion coupled to a vicinity of an intermediate portion in the longitudinal direction of the rocker and an acceleration sensor on a lower side. The center pillar in which the detection sensor is arranged is arranged with the vehicle width direction as the longitudinal direction, and the longitudinal end portion is coupled to a predetermined position on the vehicle cabin inner side of the rocker that is on the vehicle front side with respect to the lower end portion of the center pillar. And a front side cross member that is hinged to the front pillar and that opens and closes the door opening. In the lower part, in the range that wraps in the vehicle vertical direction with respect to the outer upper part of the rocker, and between the front pillar and the front floor cross member. Over R portion front end at the lower end near to the center pillar
In the range, set a reinforcing member having a predetermined strength against the side load of the front side door to the door outer panel
At the same time, the reinforcing member is a door inner panel of the front side door.
At the bottom of the outer surface of the door against the door outer panel.
It is installed with a certain gap, and the reinforcing member is a member that crosses the inside of the door from side to side.
It is equipped with an upper surface part that extends along the direction, and
The first reinforcement part is installed to increase the rigidity in the vehicle width direction.
A body structure for a side collision detection sensor, characterized in that 2. The reinforcing member includes a side surface portion that extends along a direction that longitudinally cuts through the inside of the door, and a second reinforcing portion for increasing rigidity in the vehicle width direction is set on the side surface portion. The body structure for a side collision detection sensor according to claim 1 , wherein: 3. The rocker includes a rocker outer panel and a rocker inner panel, each of which has a substantially hat-shaped cross section and is arranged to face each other. An upper surface portion and an upper end flange portion of the rocker inner panel are formed. claims of the range to wrap the connecting portions a and the reinforcing member and the vehicle longitudinal direction, setting the third reinforcing portion for increasing the rigidity against tilting direction of the vehicle interior side of the upper flange portion, it is characterized by The body structure for a side collision detection sensor according to claim 1 or 2 .