JP2022038613A - Vehicle structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle structure capable of avoiding damage to a connection portion provided on a mounted object even if a cross member moves relatively forward in the front-rear direction of the vehicle due to a rear collision.
A vehicle structure is a vehicle structure that forms a skeleton member of a vehicle and includes a cross member extending in the vehicle width direction and a load mounted on the front of the cross member in the vehicle front-rear direction. The cross member is located on an extension line in the vehicle front-rear direction of a connection portion provided on the mounting object, and is at a position separated from the connection portion in the vehicle height direction at the time of a vehicle rear collision. Is provided with a bracket that secures the value above a predetermined value.
[Selection diagram] Fig. 3

Description

The present disclosure relates to a vehicle structure.

Patent Document 1 discloses a fuel tank mounting structure in which a fuel tank is arranged at a lower portion of a floor provided at the rear of the vehicle body. In such a fuel tank mounting structure, a rear suspension member is arranged behind the fuel tank, and the leading edge portion of the rear suspension member is formed in a shape that follows the shape of the rear surface of the fuel tank.

Japanese Unexamined Patent Publication No. 2004-262425

In the fuel tank mounting structure disclosed in Patent Document 1, when the suspension member (cross member) moves relatively forward in the front-rear direction of the vehicle due to a rear collision, the suspension member is connected to the fuel hose provided in the fuel tank (mounted object). There is a risk of collision with the part (connection part) and damaging the fuel hose connection part provided in the fuel tank.

In view of the above circumstances, the embodiment of the present invention provides a vehicle structure capable of avoiding damage to the connection portion provided on the mounted object even if the cross member moves relatively forward in the front-rear direction of the vehicle due to a rear collision. The purpose is.

The vehicle structure according to the embodiment of the present invention is a vehicle structure including a cross member that forms a skeleton member of the vehicle and extends in the vehicle width direction, and a load mounted on the front of the cross member in the vehicle front-rear direction. Therefore, the cross member and the mounted object are located on the extension line in the vehicle front-rear direction of the connection portion provided on the mounted object and at a position separated from the connecting portion in the vehicle height direction at the time of a vehicle rear collision. It is equipped with a bracket that secures a distance from and above a predetermined value.

According to the above configuration, even if the cross member moves relatively forward in the front-rear direction of the vehicle due to the rear collision, the bracket secures the distance between the cross member and the mounted object at the time of the rear collision of the vehicle to a predetermined value or more. Can be prevented from colliding with the connection portion provided on the load. As a result, even if the cross member moves relatively forward in the front-rear direction of the vehicle due to the rear collision, damage to the connection portion provided on the load can be avoided.

In the embodiment of the present invention, in the above configuration, the bracket has a vertical wall portion that overlaps with the cross member in the vehicle front-rear direction.

According to the above configuration, the vertical wall portion of the bracket overlaps the cross member in the front-rear direction of the vehicle, so that the cross member can reliably push the vertical wall portion of the bracket.

In the embodiment of the present invention, in the above configuration, the bracket has a protrusion extending below the cross member from the vehicle width direction end portion of the vertical wall portion and overlapping the cross member in the vehicle height direction.

According to the above configuration, the protrusion of the bracket extends below the cross member from the vehicle width direction end of the vertical wall portion of the bracket and overlaps the cross member in the vehicle height direction, so that the protrusion of the bracket is cross-membered. Can be reliably supported.

In the embodiment of the present invention, in the above configuration, the vertical wall portion is formed with a flange portion at the end portion in the vehicle width direction.

According to the above configuration, since the vertical wall portion has a flange portion formed at the end portion in the vehicle width direction, the flange portion supports the vertical wall portion so that the cross member can reliably support the vertical wall portion. ..

In the embodiment of the present invention, in the above configuration, the mounted object has a surface portion facing the bracket in the front-rear direction of the vehicle.

According to the above configuration, when the cross member moves relative to the front in the front-rear direction of the vehicle due to the rear collision, the mounted object hits the bracket and the surface portion, so that damage to the mounted object can be suppressed.

In the embodiment of the present invention, in the above configuration, the surface portion is formed of a flat surface.

According to the above configuration, when the cross member moves relative to the front in the front-rear direction of the vehicle due to the rear collision, the mounted object hits the bracket on a flat surface, so that damage to the mounted object can be suppressed.

In the embodiment of the present invention, in the above configuration, the mounted material is a fuel tank, the connection portion is a fuel hose connection portion, and the fuel hose connection portion is provided in the upper half portion of the fuel tank. The bracket is provided at a position lower than the fuel hose connection portion in the vehicle height direction.

According to the above configuration, even if the cross member moves relatively forward in the front-rear direction of the vehicle due to the rear collision, the bracket secures the distance between the cross member and the fuel tank at a predetermined value or more at the time of the rear collision of the vehicle. Can be prevented from colliding with the fuel hose connection provided in the fuel tank. As a result, even if the cross member moves relatively forward in the front-rear direction of the vehicle due to the rear collision, damage to the fuel hose connection portion provided in the fuel tank can be avoided.

In the embodiment of the present invention, in the above configuration, the fuel hose connection portion is provided at a position recessed forward from the rear end of the fuel tank in the vehicle front-rear direction.

According to the above configuration, since the fuel hose connection portion is provided at a position recessed forward from the rear end of the fuel tank in the vehicle front-rear direction, the amount of protrusion of the fuel hose connection portion is reduced, and the cross member and the fuel tank are connected to each other. It is possible to narrow the interval of a predetermined value or more to be secured between them.

According to the embodiment of the present invention, even if the cross member moves relatively forward in the front-rear direction of the vehicle due to the rear collision, damage to the connection portion provided on the mounted object can be avoided.

It is a top view which shows roughly the structure of the vehicle structure which concerns on embodiment of this invention. It is a perspective view which shows the structure of the load shown in FIG. 1 schematically. It is an enlarged plan view of the main part of the vehicle structure shown in FIG. It is an enlarged side view of the main part of the vehicle structure shown in FIG. 3 is an enlarged perspective view of a main part of the cross member shown in FIGS. 3 and 4. It is a top view of the bracket shown in FIG. It is a side view of the bracket shown in FIG. It is a side view which shows the vehicle structure which concerns on embodiment of this invention, and is the figure which shows the state before the rear collision. It is a side view which shows the vehicle structure which concerns on embodiment of this invention, and is the figure which shows the state after a rear collision.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention to this, but are merely explanatory examples. do not have.

FIG. 1 is a plan view schematically showing the configuration of the vehicle structure 1 according to the embodiment of the present invention. As shown in FIG. 1, the vehicle structure 1 according to the embodiment of the present invention is a vehicle structure of a vehicle in which a load 3 is mounted below a floor panel (not shown) on the rear side of the vehicle. , A cross member 6 and a load 3 mounted in front of the vehicle of the cross member 6. It forms the skeleton member of the vehicle and extends in the width direction of the vehicle. The cross member 6 is, for example, a cross member that supports a rear suspension (not shown), and is provided along the vehicle width direction. The mounted object 3 is a structure in which the length in the vehicle front-rear direction is shorter than the length in the vehicle width direction and larger than the length in the vehicle height direction, and the mounted object 3 is mounted along the vehicle width direction in the longitudinal direction. The load 3 is, for example, a fuel tank 4, but is not limited thereto.

FIG. 2 is a diagram schematically showing the configuration of the load 3 shown in FIG. 1. As shown in FIG. 2, the load 3 is suspended and installed by a plurality of bands 31 and 31 spanning in the front-rear direction of the vehicle. As a result, even if the vehicle is hit backward, the load 3 maintains its position by inertia. In the example shown in FIG. 2, the load 3 is a fuel tank 4, and one fuel tank 4 is configured by joining the separately manufactured lower half portion 4a and the upper half portion 4b.

As shown in FIG. 2, the mounted object 3 is provided with a connecting portion 3a. As shown in FIG. 2, when the load 3 is a fuel tank 4, the connection portion 3a is, for example, a fuel hose connection portion 4c to which the fuel hose 5 is connected, and the upper half portion 4b of the fuel tank 4. Preferably, the fuel tank 4 is provided at a position recessed forward from the rear end in the vehicle front-rear direction.

FIG. 3 is an enlarged plan view of a main part of the vehicle structure 1 shown in FIG. 1, and FIG. 4 is an enlarged plan view of a main part of the vehicle structure 1 shown in FIG. As shown in FIGS. 3 and 4, the cross member 6 includes a bracket 61 capable of ensuring a gap. The bracket 61 secures the distance between the cross member 6 and the mounted object 3 to a predetermined value DS or more. The predetermined value DS is an interval at which the cross member 6 does not collide with the connection portion 3a even if the cross member 6 collides with the load 3 due to a rear collision. Amount), the position of the connecting portion 3a, the size of the connecting portion 3a, and the like. As shown in FIG. 3, the connecting portion 3a is on the vehicle front-rear direction extension line EX of the connecting portion 3a provided on the mounting object 3, and as shown in FIG. 4, from the connecting portion 3a in the vehicle height direction. It is installed in a detached position.

As shown in FIGS. 3 and 4, the load 3 is the fuel tank 4, the connection portion 3a is the fuel hose connection portion 4c to which the fuel hose 5 is connected, and the fuel hose connection portion 4c is the fuel tank 4. When provided in the upper half portion 4b, as shown in FIG. 3, the bracket is on the vehicle front-rear direction extension line EX of the fuel hose connection portion 4c, and as shown in FIG. 4, the fuel hose connection portion 4c. It is provided at a position lower than that in the vehicle height direction, preferably at a position facing the lower half portion 4a of the fuel tank 4.

FIG. 5 is an enlarged perspective view of a main part of the cross member 6 shown in FIGS. 3 and 4. 6 is a plan view of the bracket 61 shown in FIG. 5, and FIG. 7 is a side view of the bracket 61 shown in FIG. As shown in FIG. 5, the bracket 61 is provided on the lower edge of the leading edge of the cross member 6. The bracket 61 is fixed to the cross member 6 by being co-tightened by, for example, a bolt 62 for fixing the stabilizer fixing bracket 71 for fixing the stabilizer 7.

As shown in FIGS. 5 to 7, for example, the bracket 61 is configured by joining two sheet metal parts in combination. In the example shown in FIGS. 5 to 7, the bracket 61 has a portion 61a that abuts on the mounted object 3 (hereinafter referred to as “contact portion 61a”) and a portion 61b that fixes the corresponding contact portion 61a to the cross member 6 (hereinafter “” It has a fixed portion 61b ”). The contact portion 61a has a U-shape in a plan view and an L-shape in a side view, the rear end of the upper portion abuts on the front surface of the cross member 6, and the upper end of the lower portion abuts on the lower surface of the cross member 6. It is formed to touch. The fixing portion 61b is provided so as to fill a U-shaped groove in a plan view of the contact portion 61a, and one through hole 61b1 is provided in the center thereof. As a result, the bracket 61 is fixed to the cross member 6 by a single bolt 32 (see FIG. 7).

As shown in FIGS. 5 to 7, for example, the bracket 61 has a vertical wall portion 61a1 at the contact portion 61a. The vertical wall portion 61a1 overlaps with the cross member 6 in the front-rear direction of the vehicle. As a result, the contact portion 61a of the bracket 61 overlaps with the cross member 6 in the vertical wall portion 61a1 in the vehicle front-rear direction, so that the cross member 6 can reliably push the contact portion (vertical wall portion 61a1) of the bracket 61. can.

As shown in FIGS. 5 to 7, for example, the bracket 61 has a protrusion 61a2 at the contact portion 61a. The protruding portion 61a2 extends below the cross member 6 from the end portion of the vertical wall portion 61a1 in the vehicle width direction and overlaps with the cross member 6 in the vehicle height direction. As a result, the contact portion 61a of the bracket 61 extends below the cross member 6 from the vertical wall portion 61a1 in the protrusion 61a2 and overlaps with the cross member 6 in the vehicle height direction. ) Can be reliably supported by the cross member 6.

As shown in FIGS. 5 to 7, for example, the vertical wall portion 61a1 is formed with a flange portion 61a12 at the end portion in the vehicle width direction. As a result, the flange portion 61a12 supports the vertical wall portion 61a1, so that the cross member 6 can reliably support the vertical wall portion 61a1.

Further, as shown in FIGS. 3 and 4, for example, the mounted object 3 has a surface portion 3b facing the bracket 61 in the vehicle front-rear direction. By doing so, when the cross member 6 moves forward in the front-rear direction of the vehicle due to the rear collision, the mounted object 3 hits the bracket 61 and the surface portion 3b, so that damage to the mounted object 3 can be suppressed.

Further, as shown in FIGS. 3 and 4, for example, the surface portion 3b is formed of a flat surface 3b1. By doing so, when the cross member 6 moves relative to the front in the front-rear direction of the vehicle due to the rear collision, the mounted object 3 hits the bracket 61 on a flat surface, so that damage to the mounted object 3 can be suppressed.

8 is a side view showing the vehicle structure 1 according to the embodiment of the present invention, FIG. 8-1 is a view showing a state before a rear collision, and FIG. 8-2 is a state after a rear collision. It is a figure which shows. As shown in FIG. 8-1, before the vehicle is collided backward, the distance between the cross member 6 and the load 3 is sufficiently wide, and the cross member 6 is connected to the connection portion 3a provided on the load 3. There is no collision. As shown in FIG. 8-2, when the vehicle is rear-struck, the load 3 maintains its position due to inertia, while the cross member 6 moves relatively forward in the front-rear direction of the vehicle. However, the cross member 6 is provided on the vehicle front-rear direction extension line EX of the connecting portion 3a provided on the mounting object 3, and the cross member 6 and the mounting object 3 are located at positions separated from the connecting portion 3a in the vehicle height direction. Since the bracket 61 for ensuring the interval to be equal to or higher than a predetermined value DS is provided, the cross member 6 does not collide with the connection portion 3a provided on the mounting object 3.

According to the vehicle structure 1 according to the embodiment of the present invention described above, even if the cross member 6 moves relatively forward in the front-rear direction of the vehicle due to a rear collision, the bracket 61 sets the distance between the cross member 6 and the load 3 in advance. Since the DS is secured to be equal to or higher than the predetermined value DS, it is possible to prevent the cross member 6 from colliding with the connection portion 3a provided on the mounting object 3. As a result, even if the cross member 6 moves relatively forward in the front-rear direction of the vehicle due to the rear collision, damage to the connecting portion 3a provided on the mounted object 3 can be avoided.

The mounted object 3 is a fuel tank 4, the connection portion 3a is a fuel hose connection portion 4c to which the fuel hose 5 is connected, the fuel hose connection portion 4c is provided in the upper half portion 4b of the fuel tank 4, and the bracket 61. Is provided at a position lower in the vehicle height direction than the hose connection portion, and the bracket 61 is the distance between the cross member 6 and the fuel tank 4 even if the cross member 6 moves relatively forward in the vehicle front-rear direction due to a rear collision. Is secured to be equal to or higher than a predetermined value DS, so that it is possible to prevent the cross member 6 from colliding with the fuel hose connection portion 4c provided in the fuel tank 4. As a result, even if the cross member 6 moves relatively forward in the front-rear direction of the vehicle due to a rear collision, damage to the fuel hose connection portion 4c provided in the fuel tank 4 can be avoided.

Further, when the fuel hose connecting portion 4c to which the fuel hose 5 is connected is provided at a position recessed forward from the rear end of the fuel tank 4 in the vehicle front-rear direction, it is secured in advance between the cross member 6 and the fuel tank 4. It is possible to narrow the interval of the specified predetermined value DS or more.

The present invention is not limited to the above-described embodiment, and includes a modification of the above-mentioned embodiment and a combination of these embodiments as appropriate.

1 Vehicle structure 3 Vehicles 3a Connection 3b Surface 3b 1 Flat 31 Band 4 Fuel tank 4a Lower half 4b Upper half 4c Fuel hose connection 5 Fuel hose 6 Cross member 61 Bracket 61a Abutment 61a1 Vertical wall 61a12 Flange 61a2 Protruding part 61b Fixing part 61b1 Through hole 62 Bolt 7 Stabilizer 71 Stabilizer fixing bracket

Claims (8)

A cross member that forms the skeleton member of the vehicle and extends in the width direction of the vehicle,
The load mounted on the front of the cross member in the front-rear direction of the vehicle and
It is a vehicle structure equipped with
The cross member is located on an extension line in the vehicle front-rear direction of a connection portion provided on the mounting object, and is at a position separated from the connection portion in the vehicle height direction at the time of a vehicle rear collision. Equipped with a bracket to secure the specified value or more,
Vehicle structure. The bracket has a vertical wall portion that overlaps the cross member in the front-rear direction of the vehicle.
The vehicle structure according to claim 1. The bracket has a protrusion extending below the cross member from the vehicle width direction end of the vertical wall portion and overlapping the cross member in the vehicle height direction.
The vehicle structure according to claim 2. A flange portion is formed on the vertical wall portion at the end portion in the vehicle width direction.
The vehicle structure according to claim 2 or 3. The mounted object has a surface portion facing the bracket in the front-rear direction of the vehicle.
The vehicle structure according to any one of claims 1 to 4. The vehicle structure according to claim 5, wherein the surface portion is formed of a flat surface. The load is a fuel tank, and the connection is a fuel hose connection.
The fuel hose connection is provided in the upper half of the fuel tank.
The bracket is provided at a position lower than the fuel hose connection portion in the vehicle height direction.
The vehicle structure according to any one of claims 1 to 6. The fuel hose connection portion is provided at a position recessed forward from the rear end of the fuel tank in the vehicle front-rear direction.
The vehicle structure according to claim 7.

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