JP2017088017A - vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for suppressing the weight of a body frame from increasing.SOLUTION: In a vehicle incorporated with a first high-pressure tank and a second high-pressure tank, a heavy article including at least one of a fuel cell, a motor, a converter and a battery is incorporated in a front room, a space located forward of a cabin of the vehicle. Further, the first high-pressure tank is incorporated in a center tunnel that extends in a longitudinal direction of the vehicle, with a longitudinal direction of the first high-pressure tank extended along the longitudinal direction of the vehicle, while the second high-pressure tank is incorporated rearward of the first high-pressure tank, with a longitudinal direction of the second high-pressure tank extended along a width direction of the vehicle; the heavy article is disposed at a height so as to collide with the first high-pressure tank in the case of a forward collision; the second high-pressure tank is disposed at a height so as to collide with the first high-pressure tank as it moves rearward; and a rearward part in rearward than the second high-pressure tank, that is, a part of the body frame of the vehicle, is disposed at a height so as to collide with the second high-pressure tank as it moves rearward.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle.

  Conventionally, a vehicle in which a heavy object such as a fuel cell is mounted in a front room, which is a space ahead of a guest room, and a part of a body skeleton is disposed between the heavy object and the guest room (for example, Patent Document 1).

JP 2009-190438 A

  In order to prevent the fuel cell from entering the passenger compartment behind the fuel cell when the vehicle described in Patent Document 1 collides with some object in front of the vehicle, a body disposed between the fuel cell and the passenger compartment. It is preferable to make part of the skeleton strong. However, when this portion of the body skeleton is made strong, there is a problem that the weight of the entire body skeleton increases, and as a result, the weight of the vehicle increases.

  The present invention has been made to solve the above-described problems, and can be realized as the following forms.

(1) According to one form of this invention, the vehicle carrying a 1st high pressure tank and a 2nd high pressure tank is provided. In this vehicle, a heavy object including at least one of a fuel cell, a motor, a converter, and a battery is mounted in a front room that is a space ahead of the passenger compartment of the vehicle, and the first high-pressure tank includes The second high-pressure tank is mounted in a center tunnel extending in the longitudinal direction of the vehicle so that the longitudinal direction thereof is along the longitudinal direction of the vehicle, and the second high-pressure tank is configured so that the longitudinal direction is along the width direction of the vehicle. The heavy load is mounted at the rear of the tank, and the heavy object is disposed at a height at which it collides with the first high-pressure tank at the time of a front collision, and the second high-pressure tank collides when the first high-pressure tank moves rearward. The rear portion behind the second high-pressure tank is a height that collides when the second high-pressure tank moves rearward, and is a part of the body skeleton of the vehicle. It is located. According to this aspect, the impact applied at the time of the frontal collision is distributed to the first high-pressure tank, the second high-pressure tank, and the rear part that is a part of the body skeleton. For this reason, it is not necessary to make the body skeleton stronger in comparison with the case where the impact applied to the body skeleton is absorbed by only a part of the body skeleton between the fuel cell and the passenger compartment at the time of a forward collision. As a result, an increase in the weight of the body skeleton can be suppressed.

  The present invention can be realized in various forms, for example, in the form of a vehicle manufacturing method.

1 is a schematic diagram illustrating a configuration of a vehicle according to an embodiment of the present invention. It is the schematic when a vehicle is seen from the width direction (Z-axis direction). It is a schematic diagram which shows the AA cross section of FIG. It is a schematic diagram which shows the BB cross section of FIG. It is a schematic diagram which shows CC cross section of FIG. It is the schematic which shows the structure of the vehicle which is this modification.

A. Embodiment:
FIG. 1 is a schematic diagram showing a configuration of a vehicle 100 according to an embodiment of the present invention. In the present specification, descriptions relating to directions in the vehicle 100 (“right”, “left”, “front”, “rear”, “upper”, “lower”) are respectively driving when the vehicle 100 is boarded. The direction is based on the person. In FIG. 1, the X-axis positive direction indicates the front of the vehicle, the Y-axis positive direction indicates the vehicle upper side, and the Z-axis positive direction indicates the right side of the vehicle. The XYZ axes are the same in the drawings after FIG. That is, the X-axis direction indicates the front-rear direction of the vehicle, and the Z-axis direction indicates the width direction of the vehicle.

  FIG. 2 is a schematic diagram when the vehicle 100 is viewed from the width direction (Z-axis direction). The vehicle 100 includes a guest room 110 and a front room 120 as a space inside the vehicle body. The cabin 110 is a space in which passengers of the vehicle 100 including the driver board. The front room 120 is a space in front of the guest room 110.

  The vehicle 100 includes a body skeleton 10, a first high-pressure tank 20, a second high-pressure tank 30, and a fuel cell 40. The vehicle 100 travels by supplying electric power generated in the fuel cell 40 to a wheel driving motor (not shown) and rotating the wheel 70. In the present embodiment, the fuel cell 40 is used as a heavy object. In the present specification, the heavy article refers to an article including at least one of a fuel cell, a motor, a converter, and a battery.

  The body skeleton 10 is composed of a plurality of frames, and each frame is a prismatic member having a closed space inside by bending a plate-like metal. Body skeleton 10 is provided in vehicle 100 in order to secure the strength of vehicle 100. As shown in FIG. 1, bumper reinforcements 12 and 14 are respectively fixed to the front and rear of the body skeleton 10. The body skeleton 10 is fixed to a floor panel 60 (not shown in FIGS. 1 and 2).

  The fuel cell 40 is a solid polymer fuel cell that generates power by receiving supply of hydrogen as a fuel gas and oxygen as an oxidant gas as reaction gases. The fuel cell 40 is mounted in the front room 120. In the present embodiment, the fuel cell 40 is fixed to the body skeleton 10.

  The first high-pressure tank 20 and the second high-pressure tank 30 are connected to the fuel cell 40 (not shown), and are filled with high-pressure hydrogen to be supplied to the fuel cell 40. The first high-pressure tank 20 is mounted on the vehicle 100 so that the longitudinal direction is along the front-rear direction (X-axis direction) of the vehicle 100. Here, in this specification, “the vehicle is mounted on the vehicle 100 so that the longitudinal direction is along the longitudinal direction (X-axis direction) of the vehicle 100” means that the longitudinal direction is the longitudinal direction of the vehicle 100 (X-axis direction). Indicates that the vehicle is mounted on the vehicle 100 in a direction within ± 20 °.

  FIG. 3 is a schematic diagram showing the AA cross section of FIG. 1. As shown in FIG. 3, the first high-pressure tank 20 is fixed below the floor panel 60 via bands 61 and 62. Bands 61 and 62 and floor panel 60 are fixed by bolts and nuts. In the present embodiment, the first high-pressure tank 20 is mounted in a center tunnel 65 that extends in the front-rear direction (X-axis direction).

  As shown in FIG. 1, the second high-pressure tank 30 is mounted on the vehicle 100 such that the longitudinal direction is along the width direction (Z-axis direction) of the vehicle 100. The second high-pressure tank 30 is disposed behind the first high-pressure tank 20 (−X axis direction side). In this specification, “the vehicle is mounted on the vehicle 100 so that the longitudinal direction is along the width direction (Z-axis direction) of the vehicle 100” means that the longitudinal direction is relative to the width direction (Z-axis direction) of the vehicle 100. It indicates that the vehicle is mounted on the vehicle 100 in a direction within ± 20 °.

  FIG. 4 is a schematic diagram showing a BB cross section of FIG. 1. As shown in FIG. 4, the second high-pressure tank 30 is fixed below the floor panel 60 via bands 66 and 67. Bands 66 and 67 and floor panel 60 are fixed by bolts and nuts. In the present embodiment, the second high-pressure tank 30 is mounted below the rear seat in the cabin 110. As shown in FIG. 4, the band 66 and the band 67 are fixed by bolts and nuts on the front side of the vehicle, and are fixed by bolts and nuts via a spring on the rear side of the vehicle.

  As shown in FIG. 2, in the vertical direction (Y-axis direction), the body skeleton 10, the first high-pressure tank 20, the second high-pressure tank 30, and the fuel cell 40 are arranged in the following relationship. Yes.

  When the vehicle 100 collides with some object in the front, that is, in the case of a front collision, the fuel cell 40 is a part 10A of the body skeleton 10 positioned in front of the first high-pressure tank 20 (hereinafter also referred to as “front portion 10A”). ) And the height colliding with the first high-pressure tank 20.

  FIG. 5 is a schematic view showing a CC cross section of FIG. As shown in FIG. 5, the fuel cell 40 is disposed at a position that overlaps at least a part of the front portion 10 </ b> A of the body skeleton 10 and at least a part of the first high-pressure tank 20 in the vertical direction (Y-axis direction). .

  As shown in FIG. 2, the second high-pressure tank 30 is disposed at a height that causes the collision when the first high-pressure tank 20 moves rearward in the vertical direction (Y-axis direction). That is, the second high-pressure tank 30 is arranged at a position overlapping with at least a part of the first high-pressure tank 20 in the vertical direction (Y-axis direction).

  A part 10B (hereinafter also referred to as “rear part 10B”) of the body skeleton 10 behind the second high-pressure tank 30 is disposed at a height at which the second high-pressure tank 30 collides when it moves rearward. That is, the rear portion 10B of the body skeleton 10 is disposed at a position overlapping with at least a part of the second high-pressure tank 30 in the vertical direction (Y-axis direction).

  As shown in FIG. 1, in the width direction (Y-axis direction), the body skeleton 10, the first high-pressure tank 20, the second high-pressure tank 30, and the fuel cell 40 are arranged in the following relationship. ing. The fuel cell 40 is disposed at a position that overlaps at least a part of the front portion 10A of the body skeleton 10 and at least a part of the first high-pressure tank 20 in the width direction (Y-axis direction). The first high-pressure tank 20 is disposed at a position that overlaps at least a part of the second high-pressure tank 30 in the width direction (Y-axis direction). The second high-pressure tank 30 is disposed at a position that overlaps at least a part of the rear portion 10B of the body skeleton 10 in the width direction (Y-axis direction).

  According to the vehicle 100 of the present embodiment, when the fuel cell 40 moves rearward of the vehicle 100 when the vehicle 100 collides forward, the fuel cell 40 includes the front portion 10A of the body skeleton 10 and the first high-pressure tank 20. Clash with. Here, the direction of the force applied to the first high-pressure tank 20 and the second high-pressure tank 30 when the fuel cell 40 moves rearward of the vehicle 100 is shown in FIG. As the fuel cell 40 moves rearward of the vehicle 100, the first high-pressure tank 20 pushed by the fuel cell 40 collides with the second high-pressure tank 30. The second high-pressure tank 30 collides with the rear portion 10B of the body skeleton 10. For this reason, according to the vehicle 100 of the present embodiment, the impact applied to the body skeleton 10 during a frontal collision is distributed to the front part 10A and the rear part 10B of the body skeleton 10. For this reason, it is not necessary to make the body skeleton 10 strong as compared with the case where the impact applied to the body skeleton 10 is absorbed only by the front portion 10A between the fuel cell 40 and the cabin 110. As a result, an increase in the weight of the body skeleton 10 can be suppressed.

B. Variations:
B1. Modification 1:
In the above-described embodiment, the fuel cell 40 is used as a heavy object. However, the present invention is not limited to this. As the heavy object, at least one of a fuel cell, a motor, a converter, and a battery may be used. In the case where a plurality of heavy objects are provided, in the means for solving the problem, “the heavy object is disposed at a height that collides with the first high-pressure tank at the time of a forward collision” is any of the heavy objects. One means that it is arranged at a height that collides with the first high-pressure tank. In addition, since the fuel cell is the heaviest and hardest among the above heavy objects, the fuel cell is arranged at a height that collides with the first high-pressure tank at the time of a forward collision, thereby further increasing the weight of the body skeleton. Can be suppressed.

B2. Modification 2:
In the above-described embodiment, the body skeleton 10 includes the front portion 10A. However, the present invention is not limited to this. That is, the body skeleton 10 may not include the front portion 10A.

  FIG. 6 is a schematic diagram showing a configuration of a vehicle 100A that is the present modification. The vehicle 100A of the present modification is different from the vehicle 100 of the above-described embodiment in that the front portion 10A is not provided, but is otherwise the same. Even in such a configuration, when the fuel cell 40 moves to the rear of the vehicle 100A during the front collision of the vehicle 100A, the fuel cell 40 collides with the first high-pressure tank 20. When the fuel cell 40 moves to the rear of the vehicle 100 </ b> A, the first high-pressure tank 20 pushed by the fuel cell 40 collides with the second high-pressure tank 30. The second high-pressure tank 30 collides with the rear portion 10B of the body skeleton 10. Therefore, according to the vehicle 100 </ b> A, the impact applied at the time of the forward collision is distributed to the first high-pressure tank 20, the second high-pressure tank 30, and the rear portion 10 </ b> B of the body skeleton 10. For this reason, it is not necessary to make the body skeleton stronger in comparison with the case where the impact applied to the body skeleton 10 is absorbed by only a part of the body skeleton 10 between the fuel cell and the passenger compartment at the time of a forward collision. . As a result, even when the body skeleton between the front room and the guest room is not provided, an increase in the weight of the body skeleton 10 can be suppressed.

  The present invention is not limited to the above-described embodiments and modifications, and can be realized with various configurations without departing from the spirit thereof. For example, the technical features in the embodiments and the modifications corresponding to the technical features in each embodiment described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Body frame | skeleton 10A ... Front part 10B ... Back part 12, 14 ... Bumper reinforcement 20 ... 1st high pressure tank 30 ... 2nd high pressure tank 40 ... Fuel cell 60 ... Floor panel 61, 62, 66, 67 ... Band 65 ... Center tunnel 70 ... Wheels 100, 100A ... Vehicle 110 ... Guest room 120 ... Front room

Claims (1)

In a vehicle equipped with a first high pressure tank and a second high pressure tank,
A heavy object including at least one of a fuel cell, a motor, a converter, and a battery is mounted on a front room, which is a space ahead of the passenger compartment of the vehicle,
The first high-pressure tank is mounted in a center tunnel extending in the front-rear direction of the vehicle so that the longitudinal direction thereof is along the front-rear direction of the vehicle,
The second high-pressure tank is mounted behind the first high-pressure tank so that the longitudinal direction is along the width direction of the vehicle,
The heavy object is disposed at a height that collides with the first high-pressure tank during a front collision,
The second high-pressure tank is disposed at a height at which the first high-pressure tank collides when moving backward,
The vehicle, which is a part of a body skeleton of the vehicle, and a rear part behind the second high-pressure tank is disposed at a height at which the second high-pressure tank collides when moving backward.

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