JP4487897B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure.

  Generally, in-vehicle devices such as a battery, an engine control unit, and an ABS hydro unit are mounted in a food room formed in front of the passenger compartment. These in-vehicle devices are attached to rigid members such as frames and members via brackets and mount rubbers in order to suppress vibrations and the like, and are mainly provided at the side portions of the food room.

  Such conventional vehicle body structures are disclosed in, for example, Patent Documents 1 to 3.

JP-A-8-282305 JP 2000-108868 A JP 2004-216960 A

  Here, in recent vehicles, there is a tendency to adopt a cabin forward vehicle body layout in which the vehicle interior is extended forward in order to make the vehicle interior space as wide as possible, and the hood room formed in front of the vehicle compartment is a conventional vehicle body. It has become shorter (narrower) than the structure. In addition, it is important to ensure the safety of the vehicle body structure in order to protect the safety of passengers as safety awareness rises, and the development of vehicle bodies that reduce the deformation of the vehicle compartment at the time of a collision is promoted. ing. In particular, in the event of a frontal collision, safety is enhanced by deforming and absorbing impact energy formed in front of the passenger compartment. Specifically, when a load of a predetermined value or more is applied from the front of the vehicle body, the side member is deformed in a bellows shape and the food room is crushed rearward to absorb impact energy. The longer the area of the food room, the larger the amount of impact energy absorbed. However, as described above, the food room becomes shorter, while the vehicle body can absorb the impact energy at the time of collision in a limited area. A structure is required. In particular, in a vehicle in which the engine is mounted on the rear side, it can be said that the above tendency is more remarkable because there is no engine in the food room.

  However, in the conventional vehicle body structure, since the strut tower is arranged behind the in-vehicle device, when the hood room is crushed and the in-vehicle device moves rearward at the time of the frontal collision of the vehicle, the in-vehicle device becomes the strut tower. It will collide. Among in-vehicle devices, the ABS hydro unit is generally formed by machining a stainless steel material, and thus has particularly high rigidity and is difficult to deform. On the other hand, the strut tower is formed to be thicker than the peripheral members and has high rigidity, and the suspension strut member is housed therein, so that it is not easily deformed. Therefore, even if the in-vehicle devices collide with the strut tower, they are not easily crushed. In the conventional vehicle body structure in which the in-vehicle device that is a rigid body is mounted in front of the strut tower, the food room remains uncrushed during a frontal collision. Since the deformation amount of the food room is reduced, there is a possibility that the impact energy cannot be absorbed sufficiently.

  It is also conceivable to arrange the in-vehicle device closer to the center in the vehicle width direction than the strut tower in an attempt to prevent the in-vehicle device from colliding with the strut tower at the time of a frontal collision. However, in the food room, there are other cooling units such as radiators, headlights, etc., and changing the arrangement of the in-vehicle equipment will affect the arrangement of these other parts. It is not considered. On the other hand, in a vehicle with a shortened food room, the arrangement space is originally limited, and it is difficult to change the arrangement of in-vehicle devices. In particular, this problem becomes more serious in mini vehicles and small vehicles. Therefore, it is considered advantageous to increase the deformation area of the food room without changing the conventional component arrangement and without increasing the number of components.

  Accordingly, an object of the present invention is to solve the above-described problems and to provide a vehicle body structure capable of sufficiently absorbing impact energy at the time of a vehicle collision.

The vehicle body structure according to the present invention for solving the above problems is as follows.
A strut tower provided in a food room formed in front of the passenger compartment;
In-vehicle equipment mounted in front of the strut tower in the food room;
A guide surface that is formed on the strut tower and is inclined backward from the outside in the vehicle width direction to the inside so as to displace the in-vehicle device in the vehicle width direction at the time of a vehicle collision ;
A bracket that is fixed to the vehicle body member and is supported on the vehicle-mounted device from the bottom side and the inner side,
Forming a long mounting oblong hole in the vehicle width direction at the part of the bracket facing the bottom surface of the in-vehicle device,
The bottom surface side of the in-vehicle device is supported by the attachment slot through an elastic member .

The vehicle body structure according to the present invention for solving the above problems is as follows .
Before SL bracket is characterized in that it removably supporting the in-vehicle equipment at the time of vehicle collision.

The vehicle body structure according to the present invention for solving the above problems is as follows .
The pre-Symbol said bracket portion cut top to lack mounting holes of facing the inner surface of the in-vehicle apparatus is provided,
The inner surface side of the in-vehicle device is supported by the mounting hole via an elastic member.

According to the vehicle body structure of the present invention , a strut tower provided in a hood room formed in front of a passenger compartment, an in-vehicle device mounted in front of the strut tower in the hood room, and formed in the strut tower. It is, by providing a guide surface inclined rearwardly from the vehicle width direction outer side toward the inner side so as to displace the vehicle device in the vehicle width direction inner side at the time of vehicle collision, and the strut tower and the vehicle equipment at the time of vehicle collision Can be avoided. Therefore, the crushing residue does not occur in the food room, and the impact energy at the time of the frontal collision of the vehicle can be sufficiently absorbed.

According to the vehicle body structure according to the present invention, is fixed to the car body member, by providing a bracket for supporting the bottom side and inner surface side to the vehicle device, the vehicle device is in contact with the guide surface at the time of collision of the vehicle In this case, since the in-vehicle device can be actively tilted inward in the vehicle width direction, the displacement of the in-vehicle device in the vehicle width direction can be promoted.

According to the vehicle body structure according to the present invention, by pre-Symbol bracket for releasably supporting the vehicle equipment at the time of vehicle collision, when the vehicle device is in contact with the guide surface by collision of the vehicle, said vehicle equipment Since it is detached from the bracket, the in-vehicle device can be easily displaced in the vehicle width direction.

According to the vehicle body structure according to the present invention, the long mounting slot in the vehicle width direction is provided at a portion of the bracket that faces the bottom surface of the front SL-vehicle apparatus, the bottom side of the vehicle device is an elastic member to the mounting slot Since the bottom surface side of the in-vehicle device is easily detached from the bracket when the vehicle collides, the in-vehicle device can be smoothly tilted and displaced in the vehicle width direction.

According to the vehicle body structure according to the present invention, the pre-Symbol said bracket portion cut top to lack mounting holes of facing the inner surface of the in-vehicle apparatus is provided, the inner surface side of the vehicle device is an elastic member to the attachment hole Since the inner side surface of the in-vehicle device is easily detached from the bracket in the event of a vehicle collision, the in-vehicle device can be smoothly tilted or displaced in the vehicle width direction.

Hereinafter, the vehicle body structure according to the present invention will be described in detail with reference to the drawings. 1 is a schematic plan view of a vehicle body structure according to one embodiment of the present invention, FIG. 2 is a perspective view of the vehicle body structure according to one embodiment of the present invention, FIG. 3 is an enlarged view of a main part of FIG . ) To (b) are a plan view, an inner side view, and a front view of the bracket, and FIG. 5 is a view showing the movement of the ABS hydro unit at the time of a frontal collision. In addition, the arrow shown in the figure represents the front-back direction and the up-down direction of the vehicle body.

  As shown in FIGS. 1 to 3, the vehicle body 1 is provided with side members (vehicle body members) 2 extending in the longitudinal direction of the vehicle body. A cross member 3 extending in the vehicle width direction is connected to the front end of the side member 2, and a dash panel 4 is provided behind the cross member 3. A hood room 5 is formed in front of the dash panel 4 and a vehicle compartment 6 is formed in the rear thereof.

  A wheel house 7 is connected to the outer side of the side member 2 in the vehicle width direction, and a strut tower 8 that protrudes upward is formed at a corner of the rear side of the wheel house 7 between the side member 2 and the dash panel 4. Has been. A guide surface 9 is provided on the inner side of the front surface of the strut tower 8 in the vehicle width direction, and the guide surface 9 is formed to incline backward from the outer side in the vehicle width direction toward the inner side. In addition, the strut tower 8 is formed thicker than the peripheral members and has high rigidity. A front deck 10 extending in the vehicle width direction is connected to the upper portion of the dash panel 4, and the front end of the front deck 10 projects forward so as to cover the strut tower 8.

  An ABS hydro unit (vehicle equipment) 11 is attached via a bracket 12 in front of the side member 2 disposed on the left side of the vehicle body 1. That is, the ABS hydro unit 11 is provided to face the front of the guide surface 9. The ABS hydro unit 11 is fixed to the bracket 12 with a bolt 15 via a rubber member (elastic member) 14 at one location at a substantially central portion of the bottom surface and two locations below the inner surface. On the other hand, the bracket 12 is fixed to the upper surface of the side member 2 by bolts 16.

  Here, the ABS hydro unit 11 is provided in a vehicle equipped with an anti-lock brake system (ABS), and is disposed in the middle of six brake pipes 13 that connect a master cylinder (not shown) and a wheel cylinder of each wheel. ing. Thus, by controlling the hydraulic pressure to each wheel cylinder, it is possible to prevent each wheel from being locked during sudden braking, and to improve the stability of the vehicle posture and the operability. Further, the ABS hydro unit 11 is a rigid body formed by cutting out a stainless material, for example.

Next, the bracket 12 will be described with reference to FIGS . 3 and 4A to 4C. As shown in FIG. 3 and FIGS. 4A to 4C, the bracket 12 is erected on the inner side in the vehicle width direction of the flat surface portion 20 disposed so as to face the upper surface of the side member 2. It is comprised from the inner wall 30, and the front | former step part 40 and the back | latter stage part 50 which are provided in the front end and rear end of the plane part 20, and is formed in the substantially hat shape by side view.

  The flat portion 20 is formed with a convex portion 21 that bulges upward and abuts against the bottom surface of the ABS hydro unit 11. The convex portion 21 has a unit attachment long hole 22 having a long diameter in the vehicle width direction. . On the other hand, an extension 23 extending rearward is formed outside the rear end of the flat portion 20, and an attachment hole 24 is opened at the tip of the extension 23 to attach a sensor (not shown). ing. Further, unit mounting holes 31 and 32 are opened in the inner wall 30, and cutout portions 33 and 34 are formed in the upper portions of the unit mounting holes 31 and 32. Member mounting holes 41 and 42 are opened in the front stage 40, and member mounting holes 51 are opened in the rear stage 50. That is, the ABS hydro unit 11 is supported by the bracket 12 by being fixed to the mounting holes 22, 31, 32 of the bracket 12 by the bolts 15, while the bracket 12 is bolted to the member mounting holes 41, 42, 51 by the bolts 16. Is fixed to the side member 2 by tightening.

  Next, the movement of the ABS hydro unit 11 during a frontal collision will be described with reference to FIG. As shown in FIG. 5, when a load F of a predetermined value or more due to a collision is applied to the front end of the vehicle body 1, the cross member 3 is moved rearward and the side member 2 is deformed rearward in a bellows shape, so that Is crushed. At this time, the ABS hydro unit 11 fixed to the side member 2 also starts to move rearward (the position of the one-dot chain line in FIG. 5).

  Thereafter, when the load F continues to act, the food room 5 (side member 2) is further crushed, and the ABS hydro unit 11 moves rearward to contact the guide surface 9 of the strut tower 8. At this time, as described above, since both the strut tower 8 and the ABS hydro unit 11 have high rigidity, they hardly deform each other, and the ABS hydro unit 11 is moved backward by the action of the guide surface 9. While moving, it is displaced while falling toward the inner side in the vehicle width direction (the position of the two-dot chain line in FIG. 5).

  Thereby, first, the bolt 15 attached to the unit attachment long hole 22 is removed, and the bottom surface of the ABS hydro unit 11 is detached from the flat surface portion 20 (convex portion 21). Next, when the inner wall 30 falls inward in the vehicle width direction, the bolts 15 attached to the unit attachment holes 31 and 32 are removed from the notches 33 and 34, and the inner side surface of the ABS hydro unit 11 is detached from the inner wall 30. That is, the unit attachment long hole 22 has a long diameter in the vehicle width direction, and the bottom surface of the ABS hydro unit 11 is supported by the unit attachment long hole 22 via the rubber member 14, so that the ABS hydro unit 11 is guided. When colliding with the surface 9, the bolt 15 is easily removed from the unit attachment long hole 22. Therefore, the ABS hydro unit 11 is easily displaced inward in the vehicle width direction, and is easily tilted. In addition, notches 33 and 34 are formed in the upper portions of the unit mounting holes 31 and 32, and the inner surface of the ABS hydro unit 11 is supported by the unit mounting holes 31 and 33 via the rubber member 14. When the inner wall 30 falls due to the displacement or fall of the ABS hydro unit 11 in the vehicle width direction, the bolt 15 is easily detached from the notches 33 and 34. Therefore, the ABS hydro unit 11 is easily displaced.

  If the load F continues to act, the ABS hydro unit 11 is moved below the front deck 10 and inside the strut tower 8 in the vehicle width direction (the position indicated by the solid line in FIG. 5). As described above, when the load F is applied at the time of a frontal collision, the ABS hydro unit 11 is moved to the rear end of the hood room 5, so that the hood room 5 can have a collapse amount of the deformation region X.

  In the embodiment, the in-vehicle device disposed in front of the strut tower 8 is the ABS hydro unit 11, but a rigid body such as a battery or an engine control unit may be used. In addition, the rigid body in the present embodiment is one that hardly deforms even when colliding with the strut tower at the time of frontal collision.

  Therefore, according to the vehicle body structure of the present invention, the strut tower 8 is formed with the guide surface 9 inclined backward from the outside in the vehicle width direction toward the inside, and the ABS hydro unit is opposed to the front of the guide surface 9. 11, the ABS hydro unit 11 is moved to the rear end of the hood room 5 even when the ABS hydro unit 11 contacts the strut tower 8 at the time of a frontal collision. Energy can be absorbed sufficiently. Thereby, it is not necessary to change the component arrangement or increase the number of components, and it is possible to suppress an increase in cost while improving the impact energy absorption performance even in a vehicle having a short (narrow) food room 5.

  Further, by providing a bracket 12 that supports the bottom surface and the inner surface of the ABS hydro unit 11 via a rubber member, when the ABS hydro unit 11 collides with the guide surface 9, the long diameter portion of the unit attachment long hole 22 and the unit The notches 33 and 34 of the mounting holes 31 and 32 serve as guides, and the ABS hydro unit 11 can be easily displaced or tilted inward in the vehicle width direction.

  The present invention can be applied to a vehicle body structure including a rigid body in front of the strut tower.

1 is a schematic plan view of a vehicle body structure according to an embodiment of the present invention. 1 is a perspective view of a vehicle body structure according to an embodiment of the present invention. FIG. 3 is an enlarged view of a main part of FIG. 2. (A) is a plan view of the bracket, (b) is an inner side view of the bracket, and (c) is a front view of the bracket. It is the figure which showed the mode of the movement of the ABS hydro unit at the time of front collision.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car body 2 Side member 3 Cross member 4 Dash panel 5 Hood room 6 Car compartment 7 Wheel house 8 Strut tower 9 Guide surface 10 Front deck 11 ABS hydro unit 12 Bracket 13 Brake pipe 14 Rubber member 15, 16 Bolt 20 Plane part 21 Convex Part 22 Unit mounting long hole 23 Extension part 24 Mounting hole 30 Inner wall 31, 32 Unit mounting hole 33, 34 Notch part 40 Front part 41, 42, 51 Member mounting hole 50 Rear part

Claims (3)

A strut tower provided in a food room formed in front of the passenger compartment;
In-vehicle equipment mounted in front of the strut tower in the food room;
A guide surface that is formed on the strut tower and is inclined rearward from the outside in the vehicle width direction to the inside so as to displace the in-vehicle device in the vehicle width direction at the time of a vehicle collision ;
A bracket that is fixed to the vehicle body member and is supported on the vehicle-mounted device from the bottom side and the inner side,
Forming a long mounting oblong hole in the vehicle width direction at the part of the bracket facing the bottom surface of the in-vehicle device,
The vehicle body structure characterized in that the bottom surface side of the in-vehicle device is supported by the mounting elongated hole via an elastic member . The vehicle body structure according to claim 1 ,
The vehicle body structure characterized in that the bracket supports the in-vehicle device so that it can be detached in the event of a vehicle collision. The vehicle body structure according to claim 1 or 2 ,
Provide a mounting hole in which the upper part is notched in the part of the bracket facing the inner surface of the in-vehicle device,
The vehicle body structure, wherein an inner surface side of the in-vehicle device is supported by the mounting hole via an elastic member.

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