vehicle

Abstract

A vehicle, wherein a floor member is formed into an isosceles trapezoidal shape with an upper bottom shorter than a lower bottom by using a plate-like member, and is mounted on a vehicle body in such a manner that the upper bottom faces the front direction of the vehicle. An engaging shape is formed at the upper bottom side portion and the upper bottom matching portion of the floor member, and an inclined shape is formed at the lower bottom side portion and the lower bottom matching portion of the floor member in such a manner that the lower bottom of the floor member is pushed upward and rearward of the vehicle when a force acts from the front. Furthermore, a plurality of ribs protruding upward or downward are formed on the floor member in such a manner that the front-rear direction of the vehicle becomes the longitudinal direction.

Description

Technical Field

[0001] The present invention relates to a vehicle, and more particularly to a cab-over type vehicle. Background Art

[0002] In the past, as such a vehicle, a flat-head type vehicle in which a driving device such as a motor is arranged below the driver's seat in the floor panel has been proposed (for example, see Japanese Patent Application Laid-Open No. 2019-073222). In addition, a flat-head type vehicle in which a battery, a driving unit for traveling, and a power unit electrically connected to the driving unit are arranged under the floor of the vehicle compartment has also been proposed (for example, see Japanese Patent Application Laid-Open No. 2020-029134). Summary of the invention

[0003] In a vehicle in which a driving electric motor is arranged under the floor of the driver's seat, the electric motor becomes a protective component against the collision even when a strong force acts in the front-to-back direction of the vehicle due to a collision or the like, and therefore, a component operated by a high voltage such as a power unit is often arranged on the upper part of the electric motor. On the other hand, since the floor of the driver's seat extends from the front to the rear of the electric motor, a collision occurs in front of and behind the electric motor relative to the compressive force in the front-to-back direction of the vehicle, and therefore the compressive force in the front-to-back direction of the vehicle acts on the floor, sometimes causing an upward bend protruding to the upper side, or a downward bend protruding to the lower side. In the case of an upward bend, the driver's protection may not be achieved. In the case of a downward bend, although it also depends on the extent, there may be a situation in which the downwardly bent floor abuts against the lower component and the component is damaged.

[0004] A main object of the vehicle of the present invention is to protect passengers and suppress damage to components below when a force acts from the front of the vehicle due to a collision or the like in a vehicle in which a running electric motor is arranged under the floor of a driver's seat.

[0005] The vehicle of the present invention adopts the following means to achieve the above-mentioned main object.

[0006] The vehicle of the present invention is a flat-head type vehicle in which a driving electric motor is arranged below a driver's seat, and is characterized in that:

[0007] The floor member under the driver's seat is formed of a plate-like member into an isosceles trapezoidal shape with an upper bottom shorter than a lower bottom, and is mounted on the vehicle body in such a way that the upper bottom faces the front direction of the vehicle.

[0008] An upper bottom side portion of the floor member and an upper bottom matching portion of the vehicle body that matches the upper bottom side portion are formed with meshing shapes to mesh with each other.

[0009] The lower bottom side portion of the floor member and the lower bottom matching portion of the vehicle body that matches the lower bottom side portion are mutually inclined in such a manner that the lower bottom of the floor member is pushed upward and rearward of the vehicle when a force acts on the floor member from the front of the vehicle.

[0010] The floor member is provided with a plurality of ribs protruding upward or downward such that the vehicle front-rear direction becomes the longitudinal direction.

[0011] In the vehicle of the present invention, a driving motor is arranged below the driver's seat. The floor member below the driver's seat is formed into an isosceles trapezoidal shape with an upper bottom shorter than a lower bottom by a plate-like member, and is installed on the vehicle body in a manner that the upper bottom becomes the front direction of the vehicle. The upper bottom side of the floor member and the part of the vehicle body that matches the upper bottom side (upper bottom matching part) are mutually formed with a meshing shape in a meshing manner, and the lower bottom side of the floor member and the part of the vehicle body that matches the lower bottom side (lower bottom matching part) are mutually formed with an inclined shape in a manner that the lower bottom of the floor member is pushed up to the upper and rear of the vehicle when a compressive force acts on the floor member from the front of the vehicle. By forming the upper bottom side and the lower bottom side of the floor member and the upper bottom matching part and the lower bottom matching part of the vehicle body in this way, when a force acts from the front of the vehicle due to a frontal collision, etc., the force from the front acts on the floor member through the meshing shape, and the lower bottom of the floor member is pushed up to the upper and rear of the vehicle through the inclined shape. As a result, the floor member moves toward the rear of the vehicle with a slight upward push. The floor member is provided with a plurality of rib shapes that protrude upward or downward in such a manner that the longitudinal direction of the vehicle becomes the longitudinal direction, thereby being able to suppress the floor member from bending upward or bending downward when a force acts on the floor member from the front. As a result, when a force acts from the front of the vehicle due to a collision or the like, the occupants can be protected, and damage to components arranged below the floor member can be suppressed. Here, the "rib shape" includes a plurality of ribs that protrude upward, a plurality of ribs that protrude downward, a plurality of ribs in which ribs that protrude upward and ribs that protrude downward are arranged alternately, and the like. Among the plurality of ribs in which ribs that protrude upward and ribs that protrude downward are arranged alternately, ribs that are wavy are also included.

[0012] In the vehicle of the present invention, the meshing shape between the side portion of the upper bottom of the floor member and the upper bottom matching portion may be a convex shape on one side and a concave shape on the other side. In addition, in the vehicle of the present invention, the inclined shape between the side portion of the lower bottom of the floor member and the lower bottom matching portion may be a shape with an angle of 45 degrees relative to the horizontal from the lower front side of the vehicle toward the upper rear side of the vehicle.

[0013] In the vehicle of the present invention, the angle between the upper bottom of the floor member and the waist may be greater than 90 degrees by 30 degrees or more. In this way, even in the case of a collision (oblique collision) from the oblique front of the vehicle, the floor member can be moved toward the rear of the vehicle with a slight upward push.

[0014] In the vehicle of the present invention, a storage portion for storing high-voltage components may be provided below the floor member and above the motor, so that the high-voltage components can be protected when a force acts from the front of the vehicle due to a collision or the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings, in which like reference numerals represent like elements, and in which:

[0016] Figure 1 This is an explanatory diagram showing a schematic structure of the vicinity of a driver's seat of a vehicle as one embodiment of the present invention.

[0017] Figure 2 It is a plan view with the floor member 30 as the center.

[0018] Figure 3 yes Figure 2 Section view of section AA in the figure.

[0019] Figure 4 yes Figure 2 Cross-sectional view of section BB.

[0020] Figure 5 It is an explanatory diagram showing an example of the state of the floor member 30 when there is an input from the front of the vehicle. DETAILED DESCRIPTION

[0021] Next, the mode for carrying out the present invention will be described using examples.

[0022] Figure 1 This is an explanatory diagram showing a schematic structure of the vicinity of a driver's seat of a vehicle as one embodiment of the present invention. Figure 2 It is a plan view with the floor member 30 as the center.

[0023] like Figure 1As shown in FIG. 1 , the vehicle 20 is configured as a flat-head type vehicle in which a driving motor 50 is arranged below a floor member 30 below a driver's seat 40. A storage section 60 for storing high voltage components such as an inverter and a boost circuit for driving the motor 50 and operating at a high voltage (e.g., 200V, 400V, etc.) is arranged below the floor member 30 and above the motor 50. In the embodiment, the motor 50 is housed in a solid housing, so that Figure 1 As shown, the front and rear of the motor 50 become a collision area where the compression force in the front-rear direction of the vehicle (compression force generated by a collision, etc.) collides, and the range of the motor 50 becomes a protection area where no collision occurs. In order to avoid damage to high-voltage components and adverse conditions caused by high voltage, the high-voltage components are arranged in the protection area.

[0024] like Figure 2 As shown, the floor member 30 is formed of a plate-like member such as a steel plate into an isosceles trapezoidal shape in which the upper bottom 32 is shorter than the lower bottom 34, and is embedded and mounted on the vehicle body 22 of the vehicle 20 in such a manner that the upper bottom 32 faces the vehicle front direction. The floor member 30 is formed so that the angle θ formed by the waist portions 36a, 36b and the upper bottom 32 is 30 degrees greater than 90 degrees, that is, 120 degrees.

[0025] Figure 3 yes Figure 2 The AA section view in Figure 4 yes Figure 2 The cross-sectional view of the BB section in FIG. Figure 3 As shown, the side surface (upper bottom side portion) 33 of the upper bottom portion 32 of the floor member 30 is formed in a concave shape, and the portion (upper bottom matching portion) 23 of the vehicle body 22 that matches the upper bottom side portion 33 is formed with a convex shape in a manner that meshes with the concave shape of the upper bottom side portion 33, and the upper bottom side portion 33 meshes with the upper bottom matching portion 23. In the embodiment, the concave shape of the upper bottom side portion 33 and the convex shape of the upper bottom matching portion 23 are referred to as meshing shapes.

[0026] The side surface (lower bottom side portion) 35 of the lower bottom portion 34 of the floor member 30 is formed to be inclined at an angle of 45 degrees in a manner that the upper surface extends toward the rear of the vehicle more than the lower surface, and the portion (lower bottom matching portion) 25 of the vehicle body 22 that matches the lower bottom side portion 35 is formed to be inclined at an angle of 45 degrees in a manner that the lower surface extends toward the front of the vehicle more than the upper surface. That is, the floor member 30 is installed in a manner that the inclination of the lower bottom side portion 35 is placed on the inclination of the lower bottom matching portion 25 of the vehicle body 22 from above. Therefore, when a force acts on the floor member 30 from the front of the vehicle, the lower bottom 34 of the floor member 30 is pushed upward and toward the upper and rear of the vehicle. In the embodiment, the inclination of the lower bottom side portion 35 and the inclination of the lower bottom matching portion 25 are referred to as an inclined shape.

[0027] The floor member 30 is provided with a plurality of ribs 31a to 31o projecting upward so that the strength is increased relative to buckling in the vehicle front-rear direction and the length direction is in the vehicle front-rear direction. Crank-shaped pressing portions 38a and 38b are formed at both ends of the lower bottom portion 34 of the floor member 30, and the floor member 30 is installed by pressing the pressing portions 38a and 38b from above with bolts 39a and 39b.

[0028] Next, consider a case where a force acts on the vehicle 20 from the front due to a collision or the like (a head-on collision). Figure 5 1 is an explanatory diagram showing an example of the state of the floor member 30 when a force acts on the vehicle from the front. When the force acts from the front of the vehicle, the vehicle body 22 in the collision area collides, and the force also acts on the floor member 30. The upper bottom side portion 33 of the floor member 30 and the upper bottom matching portion 23 of the vehicle body 22 form a meshing shape of a concave shape and a convex shape, so that the floor member 30 is pressed toward the rear of the vehicle while maintaining the meshing state. Since a plurality of ribs 31a to 31o are formed on the floor member 30, the shape is maintained without buckling against the force from the front of the vehicle. Since the lower bottom side portion 35 of the floor member 30 and the lower bottom matching portion 25 of the vehicle body 22 are formed with an inclined shape, the lower bottom side portion 35 of the floor member 30 moves toward the upper and rear of the vehicle along the inclination of the lower bottom matching portion 25 of the vehicle body 22, that is, moves in a manner of climbing up the lower bottom matching portion 25.

[0029] Thus, in the vehicle 20 of the embodiment, the upper bottom side portion 33 of the floor member 30 and the upper bottom matching portion 23 of the vehicle body 22 are formed into a meshing shape, and the lower bottom side portion 35 and the lower bottom matching portion 25 are formed into an inclined shape, and a plurality of ribs 31a to 31o are formed on the floor member 30 in such a manner that the length direction becomes the front-rear direction of the vehicle, so that the floor member 30 moves slightly upward and rearward of the vehicle while maintaining its shape in response to the force from the front of the vehicle generated by a collision, etc. Therefore, it is possible to avoid a situation where the driver (passenger) cannot be protected due to the upward bending of the floor member 30, and it is possible to avoid a situation where the components (high-voltage components) below are damaged due to the downward bending of the floor member 30.

[0030] Next, consider a case where a force acts from the oblique front of the vehicle 20 due to a collision or the like (an oblique collision). In this case, the floor member 30 is formed so that the angle θ formed by the waist portions 36a, 36b and the upper bottom portion 32 is 30 degrees greater than 90 degrees (i.e., 120 degrees), so that the floor member 30 moves slightly upward and rearward of the vehicle along the waist portion on the side opposite to the waist portion where the force acts, while maintaining its shape. Therefore, even in an oblique collision, it is possible to avoid a situation where the driver (passenger) cannot be protected due to the upward bending of the floor member 30, and it is possible to avoid a situation where the components (high-voltage components) below are damaged due to the downward bending of the floor member 30.

[0031] In the flat-head type vehicle 20 of the embodiment described above, the upper bottom 32 arranged on the front side of the vehicle is formed into an isosceles trapezoidal shape shorter than the lower bottom 34 arranged on the rear side of the vehicle, the upper bottom side portion 33 of the floor member 30 and the upper bottom matching portion 23 of the vehicle body 22 form a meshing shape, and the lower bottom side portion 35 and the lower bottom matching portion 25 form an inclined shape, and a plurality of ribs 31a to 31o are formed on the floor member 30 in such a manner that the length direction becomes the front-rear direction of the vehicle. As a result, when a force acts from the front of the vehicle due to a collision or the like, the floor member 30 moves slightly upward and rearward of the vehicle while maintaining its shape. As a result, it is possible to avoid a situation where the driver (passenger) cannot be protected due to the upward bending of the floor member 30, and it is possible to avoid a situation where the components (high-voltage components) below are damaged due to the downward bending of the floor member 30. In addition, in the flat-head type vehicle 20 of the embodiment, the floor member 30 is formed so that the angle θ formed by the waist portions 36a, 36b and the upper bottom portion 32 is 30 degrees greater than 90 degrees (i.e., 120 degrees). As a result, when a force acts from the oblique front of the vehicle 20 due to a collision or the like, the waist portion on the side opposite to the waist portion on which the force acts moves slightly upward and rearward of the vehicle while maintaining its shape. Therefore, even in an oblique collision, it is possible to avoid a situation where the driver (passenger) cannot be protected due to the upward bending of the floor member 30, and it is possible to avoid a situation where the components (high-voltage components) below are damaged due to the downward bending of the floor member 30.

[0032] In the flat-top type vehicle 20 of the embodiment, as the meshing shape of the upper bottom side portion 33 of the floor member 30 and the upper bottom matching portion 23 of the vehicle body 22, a concave shape is formed in the upper bottom side portion 33 and a convex shape is formed in the upper bottom matching portion 23. However, a convex shape may be formed in the upper bottom side portion 33 and a concave shape may be formed in the upper bottom matching portion 23. In addition, since the upper bottom side portion 33 and the upper bottom matching portion 23 only need to mesh, a shape other than the meshing shape of the concave shape and the convex shape may be used.

[0033] In the flat-head type vehicle 20 of the embodiment, the inclined shape of the lower bottom side portion 35 of the floor member 30 and the lower bottom matching portion 25 of the vehicle body 22 is set to a shape with an angle of 45 degrees relative to the horizontal from the lower front of the vehicle to the upper rear of the vehicle. However, when a force acts on the floor member 30 from the front of the vehicle, the lower bottom portion 34 of the floor member 30 is pushed upward toward the upper and rear of the vehicle, so the angle of the inclined shape is not limited to 45 degrees, and 30 degrees, 40 degrees, 50 degrees, 60 degrees, etc. may also be used.

[0034] In the cab-over type vehicle 20 of the embodiment, the angle θ formed by the waist portions 36a, 36b and the upper bottom portion 32 as the floor member 30 is formed to be 30 degrees greater than 90 degrees (i.e., 120 degrees). However, since the floor member 30 only needs to move slightly upward and rearward of the vehicle while maintaining its shape even in the case of an oblique collision, the angle θ formed only needs to be 30 degrees greater than 90 degrees (i.e., 120 degrees or more), and for example, an angle 35 degrees greater than 90 degrees (125 degrees), an angle 45 degrees greater than 90 degrees (135 degrees), etc. may be used.

[0035] In the flat-head type vehicle 20 of the embodiment, a plurality of ribs 31a to 31o protruding upward are formed on the floor member 30 in such a manner that the length direction is the front-rear direction of the vehicle. However, as long as the strength relative to the buckling in the front-rear direction of the vehicle is increased, a plurality of ribs 31a to 31o protruding downward may be formed on the floor member 30 in such a manner that the length direction is the front-rear direction of the vehicle, or ribs protruding upward and ribs protruding downward may be alternately formed on the floor member 30 in such a manner that the length direction is the front-rear direction of the vehicle. In the case where the ribs protruding upward and the ribs protruding downward are alternately formed, the cross section may also be a smooth curve (wavy).

[0036] The correspondence between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problem is explained. In the embodiment, the driver's seat 40 is equivalent to the "driver's seat", the motor 50 is equivalent to the "electric motor", the floor member 30 is equivalent to the "floor member", the upper bottom side portion 33 is equivalent to the "upper bottom side portion", the upper bottom matching portion 23 is equivalent to the "upper bottom matching portion", the lower bottom side portion 35 is equivalent to the "lower bottom side portion", and the lower bottom matching portion 25 is equivalent to the "lower bottom matching portion".

[0037] In addition, regarding the correspondence between the main elements of the embodiment and the main elements of the invention recorded in the column of means for solving the problem, since the embodiment is an example of a method for specifically describing the method for implementing the invention recorded in the column of means for solving the problem, it does not limit the elements of the invention recorded in the column of means for solving the problem. That is, the interpretation of the invention recorded in the column of means for solving the problem should be based on the description in that column, and the embodiment is only a specific example of the invention recorded in the column of means for solving the problem.

[0038] As mentioned above, although the form for implementing this invention was demonstrated using an Example, this invention is not limited to such an Example at all, It is a matter of course that it can be implemented in various forms within the range which does not deviate from the summary of this invention.

[0039] The present invention can be used in the manufacturing industry of cab-over type vehicles, etc.

Claims

1. A vehicle, which is a flat-head type vehicle in which a driving electric motor is arranged below a driver's seat, characterized in that: The floor member under the driver's seat is formed of a plate-like member into an isosceles trapezoidal shape with an upper bottom shorter than a lower bottom, and is mounted on the vehicle body in such a way that the upper bottom faces the front direction of the vehicle. An upper bottom side portion of the floor member and an upper bottom matching portion of the vehicle body that matches the upper bottom side portion are formed with meshing shapes to mesh with each other. The lower bottom side portion of the floor member and the lower bottom matching portion of the vehicle body that matches the lower bottom side portion are mutually inclined in such a manner that the lower bottom of the floor member is pushed upward and rearward of the vehicle when a force acts on the floor member from the front of the vehicle. The floor member is provided with a plurality of ribs protruding upward or downward in such a manner that the longitudinal direction of the vehicle becomes the longitudinal direction. One of the meshing shapes between the side portion of the upper bottom of the floor member and the upper bottom matching portion is a convex shape and the other is a concave shape.

2. The vehicle according to claim 1, characterized in that The inclined shape of the side portion of the lower bottom of the floor member and the lower bottom matching portion is a shape with an angle of 45 degrees relative to the horizontal from the lower front of the vehicle toward the upper rear of the vehicle.

3. The vehicle according to claim 1 or 2, characterized in that: The angle formed by the upper bottom and the waist of the floor member is greater than 90 degrees by 30 degrees or more.

4. The vehicle according to claim 1 or 2, characterized in that: A storage portion for storing high-voltage components is provided below the floor member and above the motor.

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