JP2021133765A - Vehicle floor structure - Google Patents

Abstract

To protect feet of an occupant seated on a seat installed at the upper side of an engine room from heat of an engine constantly.SOLUTION: An engine room 2 is formed so as to protrude upward from a floor F and a seat 3 is installed at the upper side of the engine room 2. A carpet 15 is installed on the floor F and a heat insulation material 16 is provided between a front surface 2a of the engine room 2 and the carpet 15. A gap 20 for guiding wind of an air conditioner 5 to the heat insulation material 16 is formed between the carpet 15 and a tunnel part 4 which face the air conditioner 5 provided at the front side of the floor F. The heat insulation material 16 is formed with ventilation flues 24 through which the wind from the air conditioner 5 passes. Cold wind of the air conditioner 5 flows to the heat insulation material 16 through the gap 20 and passes through the ventilation flues 24 of the heat insulation material 16. The heat insulation material 16 is cooled and heat of an engine 10 is not transmitted to feet of an occupant.SELECTED DRAWING: Figure 1

Description

The present invention relates to a vehicle floor structure in which an engine room protrudes from the floor and a seat is installed above the engine room.

In a cab-over vehicle such as a one-box vehicle, an engine room protruding upward from the floor is formed, the engine is mounted in the engine room, and a seat is installed above the engine room.

In cab-over vehicles, the heat of the engine is transmitted to the floor, and the feet of the occupants become hot. In order to prevent such heat damage, Patent Documents 1 and 2 describe that the heat of the engine is prevented from being transferred to the floor by passing a running wind under the floor. Further, Patent Document 2 describes that a heat insulating material is provided on the floor to block the heat of the engine.

Japanese Unexamined Patent Publication No. 2007-45279 Japanese Unexamined Patent Publication No. 9-216578

When the vehicle is stopped, the running wind cannot be used, which is insufficient to prevent heat damage. In addition, if the heat insulating material is provided on the entire floor, there are problems in cost, weight, and productivity. However, it is sufficient to keep the occupant's feet out of the heat of the engine. Furthermore, it is desirable to be able to block heat regardless of the running of the vehicle. Therefore, in view of the above, it is an object of the present invention to provide a vehicle floor structure capable of effectively protecting the feet of occupants from heat damage at all times.

In the floor structure of the vehicle of the present invention, an engine room is formed so as to project upward from the floor, a seat is installed on the upper side of the engine room, a carpet is installed on the floor, and between the front surface of the engine room and the carpet. Is provided with a heat insulating material. A gap is formed between the carpet facing the air conditioner provided on the front side of the floor and the floor to guide the air of the air conditioner to the heat insulating material, and the heat insulating material is formed with a ventilation path through which the air from the air conditioner passes. NS.

The cold air of the air conditioner flows through the gap to the heat insulating material and passes through the ventilation path of the heat insulating material. The insulation is cooled to block the heat of the engine from being transferred to the passenger compartment.

According to the present invention, the cold air of the air conditioner can be used to constantly cool the heat insulating material between the occupant's feet and the engine room, and the occupant's feet can be protected from the heat of the engine.

A perspective view of the floor structure of the vehicle according to the embodiment of the present invention as viewed diagonally from above. Sectional view of the floor with a gap between it and the carpet Diagram showing the ventilation path of the heat insulating material

FIG. 1 shows a floor structure of a vehicle such as a cab-over vehicle according to an embodiment of the present invention. The floor F of the passenger compartment is composed of a floor panel 1 on the front side and a floor panel on the rear side (not shown), and the front panel 1 projects upward between the front side and the rear side to form an engine room 2. It is formed. The seat 3 is installed on the upper side of the engine room 2. Seats 3 are arranged on the left and right for the driver's seat and the passenger's seat.

At the center of the floor panel 1 in the vehicle width direction, a raised tunnel portion 4 is formed so as to extend in the front-rear direction. A dash panel (not shown) is provided on the front side of the floor panel 1, and the air conditioner 5 is mounted on the dash panel. The air conditioner 5 is arranged above the tunnel portion 4. Air outlets 6 are formed at the upper and lower parts of the air conditioner 5.

As shown in FIG. 2, the engine 10 is mounted in the engine room 2. A maintenance hole 11 communicating with the engine room 2 is formed below each seat 3, and a cover 12 for closing the maintenance hole 11 is attached to the lower part of the seat 3. The tunnel portion 4 communicates with the engine room 2.

Each seat 3 is rotatably attached to the floor panel 1 toward the rear. Hinge portions (not shown) are provided on the rear side of the cover 12 on the center side and the outside of the vehicle in the vehicle width direction of the seat 3, respectively. Mounting brackets 13 for locking the front side of the seat are provided on the center side of the seat 3 in the vehicle width direction and on the outside of the vehicle, respectively. The mounting bracket 13 is fixed to the front surface 2a of the engine room 2. A hook 14 is attached to the front side of the lower surface of the seat 3, and the hook 14 is detachably locked to the mounting bracket 13. When the mounting bracket 13 is removed from the hook 14, the seat 3 can be rotated backward. When the seat 3 rotates backward, the maintenance hole 11 appears.

A carpet 15 is laid on the floor F. The carpet 15 covers almost the entire surface of the engine room 2 except for the front portion of the tunnel portion 4 and the maintenance hole 11. However, the support metal fitting 13 is not covered with the carpet 15 and is exposed in the vehicle interior.

A heat insulating material 16 is attached to the front surface of the engine room 2 which is easily heated by the engine 10 in order to block the heat transmitted from the engine 10, and the heat insulating material 16 is covered with the carpet 15. The heat insulating material 16 arranged below the seat 3 has a shape in which both sides in the vehicle width direction of the upper portion are cut out so as to avoid the mounting brackets 13 on both sides. The heat insulating material 16 is provided for each of the sheets 3 on both sides.

Since the mounting bracket 13 is attached to the front surface 2a of the engine room 2, the engine 10 is likely to be heated. Moreover, since the mounting bracket 13 is exposed inside the vehicle interior, heat may be radiated from the heated mounting bracket 13 and the feet of the occupant may become hot. If the position of the mounting bracket 13 is changed to a position away from the feet of the occupant in order to prevent such heat damage, the operation becomes difficult. Further, if the mounting bracket 13 is covered with another heat insulating material, it leads to an increase in cost, an increase in weight, and an increase in mounting work.

Therefore, in order to take measures against heat damage easily and inexpensively, the mounting bracket 13 is cooled by using the wind of the air conditioner 5. Specifically, a gap 20 is formed between the carpet 15 facing the air conditioner 5 and the floor F, and the gap 20 guides the wind blown from the air conditioner 5 to the front surface 2a of the engine room 2. A rib 21 is projected from the upper surface of the tunnel portion 4, and the rib 21 supports the carpet 15 from below to form a gap 20. Alternatively, the raising material 22 may be attached to the lower surface of the carpet 15. The gap 20 is formed by placing the raising member 22 on the upper surface of the tunnel portion 4. As described above, the gap 20 is formed between the carpet 15 covering the upper surface of the tunnel portion 4 and the upper surface of the tunnel portion 4, and the inlet 23 of the gap 20 is located behind the air outlet 6 at the lower part of the air conditioner 5.

Similarly, a gap 20 is formed between the center of the front surface 2a of the engine room 2 and the carpet 15 by the rib 21 and the raising material 22. A gap 20 is also formed around the heat insulating material 16 covered with the carpet 15. Therefore, the gap 20 communicates from the air outlet 6 at the bottom of the air conditioner 5 to the left and right heat insulating materials 16 and serves as a flow path for the cold air blown from the air conditioner 5.

The heat insulating material 16 includes a plurality of ventilation passages 24 through which the wind from the air conditioner 5 passes. As shown in FIGS. Penetrate through. The ventilation passage 24 is formed in a straight line, and the upper ventilation passage 24 is formed so as to face the mounting bracket 13 arranged on the outside of the vehicle. Then, at least one ventilation passage 24 is curved toward the mounting bracket 13 arranged on the outside of the vehicle. An exhaust port 25 is formed on a carpet 15 that covers the outer side surface of the engine room 2. The wind that has entered the gap 20 is discharged into the vehicle interior from the exhaust port 25.

The cold air blown out from the air outlet 6 of the air conditioner 5 enters the gap 20 from the inlet 23 and heads toward the front surface 2a of the engine room 2. The cold air that hits the front surface 2a is divided into left and right and flows toward the outside of the vehicle. The cold air goes to the heat insulating material 16 and hits the mounting bracket 13 on the center side exposed from the carpet 15. The cold air cools the mounting bracket 13 and spreads in the vehicle interior.

The cold air that has reached the heat insulating material 16 flows through the gap 20 along the side surface of the heat insulating material 16. A part of the cold air flows into the ventilation passage 24. The heat insulating material 16 is cooled not only from the outside but also from the inside. The cold air that has passed through the heat insulating material 16 is discharged into the vehicle interior from the exhaust port 25. The cold air that has passed through the upper ventilation passage 24 hits the mounting bracket 13 on the outside of the vehicle, cools the mounting bracket 13, and spreads in the vehicle interior.

By using the cold air of the air conditioner 5 in this way, the heat insulating material 16 and the mounting bracket 13 can be directly cooled while the vehicle is running or stopped. Since the mounting bracket 13 exposed in the vehicle interior does not get hot, the feet of the occupant can be protected from the heat of the engine 10. Further, since the heat insulating material 16 is cooled from the inside and outside, the heat of the engine 10 can be reliably blocked from being transmitted to the vehicle interior, and the feet of the occupants can be effectively protected from heat damage. Moreover, since the existing member such as the carpet 15 and the heat insulating material 16 can be used to form a flow path for cold air, it is very advantageous in terms of cost, weight, and productivity.

It should be noted that the present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention. Although the description is given on the passenger seat side in FIG. 1, the same configuration is used on the driver's seat side. Further, the above configuration may be applied to only one of the seats.

The gap 20 between the carpet 15 and the carpet 15 may be formed on the side surface of the tunnel portion 4 or on the floor panel 1 other than the tunnel portion 4. As the ventilation passage 24 of the heat insulating material 16, a ventilation pipe may be provided in the heat insulating material 16. Further, the ventilation passage 24 may be formed so as to penetrate the heat insulating material 16 in the vertical direction, or may be formed so as to penetrate upward or downward from the side of the heat insulating material 16.

1 Floor panel 2 Engine room 3 Seat 4 Tunnel part 5 Air conditioner 6 Air outlet 10 Engine 13 Mounting bracket 15 Carpet 16 Insulation material 20 Gap 23 Entrance 24 Ventilation path

Claims (1)

A vehicle in which an engine room is formed so as to project upward from the floor, a seat is installed above the engine room, a carpet is installed on the floor, and a heat insulating material is provided between the front of the engine room and the carpet. In the floor structure, a gap is formed between the carpet facing the air conditioner provided on the front side of the floor and the floor to guide the wind of the air conditioner to the heat insulating material, and the wind from the air conditioner is blown into the heat insulating material. The floor structure of the vehicle is characterized by the formation of a ventilation path through which it passes.

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