JP6693093B2 - vehicle - Google Patents

Description

  The present invention relates to a vehicle.

  BACKGROUND ART Conventionally, there is known a vehicle in which a heavy object such as a fuel cell is mounted in a front room, which is a space in front of a passenger room, and a part of a body skeleton is arranged between the heavy object and the passenger 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 the front, a body arranged between the fuel cell and the passenger compartment. It is preferable to strengthen a part of the skeleton. However, if this portion of the body skeleton is made rigid, 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 at least a part of the problems described above, and can be realized as the following modes.
According to an aspect of the present invention, there is provided a vehicle equipped with a first high pressure tank and a second high pressure tank. 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 in front of the passenger compartment of the vehicle; A second high-pressure tank is mounted in a center tunnel extending in the front-rear direction of the vehicle so that the longitudinal direction of the second high-pressure tank extends in the front-rear direction of the vehicle; The heavy object is mounted at the rear of the tank; the heavy object is at least partially overlapped with the first high-pressure tank in the vertical direction and collides during a frontal collision, and is a part of the body skeleton of the vehicle. is positioned at a height that impinges upon at least partially overlaps the forward collision in the vertical direction and the front portion which is located forward of the high-pressure tank; the second high-pressure tank , The vertical at least a portion overlaps the first high-pressure tank of the first high-pressure tank in the direction is disposed at a height that impinges upon which has moved backward; a part of the body frame, the second pressure The rear portion behind the tank is arranged at a height that overlaps at least a part of the second high-pressure tank in the vertical direction and collides when the second high-pressure tank moves rearward, and the rear portion is It is composed of a pair of frames extending in the front-rear direction of the vehicle, and the pair of frames are bent rearward of the second high-pressure tank so as to approach each other in the width direction. At least partly overlaps .
With such a configuration, the impact applied to the body skeleton at the time of a frontal collision is dispersed to the front part and the rear part of the body skeleton. Therefore, it is not necessary to strengthen the body skeleton as compared with the case where the impact applied to the body skeleton is absorbed only by the front part between the heavy load and the passenger compartment. As a result, an increase in the weight of the body skeleton can be suppressed. In addition, the present invention can also be realized in the following forms.

(1) According to one aspect of the invention, there is provided a vehicle equipped with a first high pressure tank and a second high pressure tank. 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, which is a space in front of the passenger compartment of the vehicle, and the first high-pressure tank is The second high-pressure tank is mounted in a center tunnel that extends in the front-rear direction of the vehicle so that the longitudinal direction extends along the front-rear direction of the vehicle. The heavy object is mounted at the rear of the tank, and the heavy object is disposed at a height where it collides with the first high-pressure tank during a frontal collision, and the second high-pressure tank collides when the first high-pressure tank moves rearward. Is a part of the body skeleton of the vehicle, and the rear part behind the second high-pressure tank collides when the second high-pressure tank moves rearward. It is located. According to this aspect, the impact applied during the frontal collision is dispersed to the first high pressure tank, the second high pressure tank, and the rear portion that is a part of the body skeleton. Therefore, at the time of a frontal collision, it is not necessary to strengthen the body skeleton as compared 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. As a result, the increase in 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.

FIG. 1 is a schematic diagram showing the configuration of a vehicle that is an embodiment of the present invention. It is a schematic diagram 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 the CC cross section of FIG. It is a schematic diagram showing the composition of the vehicles which are this modification.

A. Embodiment:
FIG. 1 is a schematic diagram showing the configuration of a vehicle 100 that is an embodiment of the present invention. In the present specification, descriptions regarding directions in the vehicle 100 (“right”, “left”, “front”, “rear”, “upper”, “lower”) refer to driving when the vehicle 100 is on board. The direction is based on the person. In FIG. 1, the positive direction of the X axis indicates the front of the vehicle, the positive direction of the Y axis indicates the upper side of the vehicle, and the positive direction of the Z axis 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 vehicle front-rear direction, and the Z-axis direction indicates the vehicle width direction.

  FIG. 2 is a schematic diagram when the vehicle 100 is viewed from the width direction (Z-axis direction). The vehicle 100 has a cabin 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 a 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 by the fuel cell 40 to a wheel driving motor (not shown) to rotate the wheels 70. In this embodiment, the fuel cell 40 is used as a heavy load. In addition, in the present specification, the heavy object refers to an object 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-shaped metal. The body skeleton 10 is provided in the vehicle 100 to ensure the strength of the vehicle 100. As shown in FIG. 1, bumper reinforcements 12 and 14 are fixed to the front and the rear of the body skeleton 10, respectively. The body skeleton 10 is fixed to a floor panel 60 (not shown in FIGS. 1 and 2).

  The fuel cell 40 is a polymer electrolyte fuel cell that receives, as reaction gas, hydrogen as a fuel gas and oxygen as an oxidant gas to generate electricity. 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 for supplying to the fuel cell 40. The first high-pressure tank 20 is mounted on the vehicle 100 so that its longitudinal direction extends along the front-rear direction (X-axis direction) of the vehicle 100. Here, in the present specification, “mounted on the vehicle 100 so that the longitudinal direction is along the front-rear direction (X-axis direction) of the vehicle 100” means that the longitudinal direction is the front-rear direction of the vehicle 100 (X-axis direction). It is shown that the vehicle 100 is mounted so that the direction is within ± 20 °.

  FIG. 3 is a schematic diagram showing an 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. The bands 61 and 62 and the floor panel 60 are fixed by bolts and nuts. In the present embodiment, the first high-pressure tank 20 is mounted in the 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 so that the longitudinal direction is along the width direction (Z-axis direction) of the vehicle 100. The second high-pressure tank 30 is arranged behind the first high-pressure tank 20 (on the −X axis direction side). In the present specification, the phrase “mounted on the vehicle 100 so that the longitudinal direction extends along the width direction (Z-axis direction) of the vehicle 100” means that the longitudinal direction is relative to the vehicle 100 width direction (Z-axis direction). It indicates that the vehicle 100 is mounted so that the direction is within ± 20 °.

  FIG. 4 is a schematic view 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. The bands 66 and 67 and the 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 passenger compartment 110. As shown in FIG. 4, the band 66 and the band 67 are fixed by a bolt and a nut on the front side of the vehicle, and are fixed by a bolt and a nut on the rear side of the vehicle via a spring.

  As shown in FIG. 2, 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 in the vertical direction (Y-axis direction). There is.

  The fuel cell 40 is a portion 10A of the body skeleton 10 located in front of the first high-pressure tank 20 (hereinafter, also referred to as "front portion 10A") when the vehicle 100 collides with an object in front, that is, at the time of front collision. ) And the first high-pressure tank 20 are disposed at a height at which they collide.

  FIG. 5 is a schematic diagram showing a CC cross section of FIG. 1. As shown in FIG. 5, the fuel cell 40 is arranged at a position overlapping 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 vertical direction (Y-axis direction). ..

  In addition, as shown in FIG. 2, the second high-pressure tank 30 is arranged at a height at which the first high-pressure tank 20 collides with the first high-pressure tank 20 in the vertical direction (Y-axis direction). That is, the second high-pressure tank 30 is arranged at a position overlapping at least a part of the first high-pressure tank 20 in the vertical direction (Y-axis direction).

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

As shown in FIG. 1, 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 in the width direction ( Z- axis direction). ing. The fuel cell 40 is arranged at a position overlapping 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 ( Z- axis direction). The first high-pressure tank 20 is arranged at a position overlapping at least a part of the second high-pressure tank 30 in the width direction ( Z- axis direction). The second high-pressure tank 30 is arranged at a position overlapping at least a part of the rear portion 10B of the body skeleton 10 in the width direction ( Z- axis direction).

  According to the vehicle 100 of the present embodiment, when the fuel cell 40 moves rearward of the vehicle 100 during a frontal collision of the vehicle 100, 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 to the rear of the vehicle 100 is shown in FIG. 1 as a direction D. As the fuel cell 40 moves to the rear of the vehicle 100, the first high pressure tank 20 pushed by the fuel cell 40 collides with the second high pressure tank 30. Then, the second high pressure tank 30 collides with the rear portion 10B of the body skeleton 10. Therefore, according to the vehicle 100 of the present embodiment, the impact applied to the body skeleton 10 during a frontal collision is dispersed to the front portion 10A and the rear portion 10B of the body skeleton 10. Therefore, it is not necessary to strengthen the body skeleton 10 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 passenger compartment 110. As a result, the weight increase of the body skeleton 10 can be suppressed.

B. Modification:
B1. Modification 1:
In the above-mentioned embodiment, the fuel cell 40 is used as a heavy load. However, the present invention is not limited to this. At least one of the fuel cell, the motor, the converter, and the battery may be used as the heavy object. In the case where a plurality of heavy objects are provided, any one of the heavy objects means that "the heavy object is disposed at a height where it collides with the first high-pressure tank during a frontal collision" in the means for solving the problem. One is arranged at a height where it collides with the first high pressure tank. Further, of the above heavy objects, the fuel cell is the heaviest and hardest, and therefore the fuel cell is arranged at a height at which it collides with the first high-pressure tank during a frontal collision, which further increases 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 the configuration of a vehicle 100A according to this modification. The vehicle 100A of the present modification is different from the vehicle 100 of the above-described embodiment in that it does not include the front portion 10A, 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 frontal collision of the vehicle 100A, the fuel cell 40 collides with the first high-pressure tank 20. As the fuel cell 40 moves to the rear of the vehicle 100A, the first high-pressure tank 20 pushed by the fuel cell 40 collides with the second high-pressure tank 30. Then, the second high pressure tank 30 collides with the rear portion 10B of the body skeleton 10. Therefore, according to the vehicle 100A, the impact applied during a frontal collision is dispersed to the first high pressure tank 20, the second high pressure tank 30, and the rear portion 10B of the body skeleton 10. Therefore, it is not necessary to make the body skeleton stronger than in the case where the impact applied to the body skeleton 10 at the time of a frontal collision is absorbed by only a part of the body skeleton 10 between the fuel cell and the passenger compartment. .. As a result, even when the body skeleton between the front room and the guest room is not provided, it is possible to suppress an increase in weight of the body skeleton 10.

  The present invention is not limited to the above-described embodiments and modifications, and can be realized in various configurations without departing from the spirit of the invention. For example, technical features in the embodiments and modifications corresponding to the technical features in each mode described in the section of the summary of the invention are provided in order to solve some or all of the above problems, or In order to achieve some or all of the effects, it is possible to appropriately replace or combine them. If the technical features are not described as essential in this specification, they can be deleted as appropriate.

10 ... Body skeleton 10A ... Front part 10B ... Rear 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 in a front room, which is a space in front 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 of the first high-pressure tank extends 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 extends along the width direction of the vehicle,
The heavy object has a height at which at least a part of the heavy object overlaps in the vertical direction in the vertical direction, and the heavy object is a part of the body skeleton of the vehicle and is positioned in front of the first high pressure tank. Is arranged at a height at which at least a part of the front portion and the vertical direction overlap in the vertical collision, and the front collision occurs.
The second high-pressure tank is arranged at a height such that it overlaps at least a part of the first high-pressure tank in the vertical direction and collides with the first high-pressure tank when moving backward.
A rear portion, which is a part of the body skeleton and is rearward of the second high-pressure tank, overlaps at least a part of the second high-pressure tank in the vertical direction and collides when the second high-pressure tank moves rearward. Is located at the height ,
The rear portion is configured by a pair of frames extending in the front-rear direction of the vehicle, and the pair of frames are bent rearward of the second high-pressure tank so as to approach each other in the width direction, and thus the rear portion in the vertical direction. A vehicle overlapping at least a portion of the second high pressure tank .

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