JPH09264134A - Front structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automotive front structure capable of suppressing the stagnation of ventilation in the upper part of a cooler and making the cooler to smoothly distribute cooling wind. SOLUTION: In an engine room, a radiator (cooler) 4 is disposed being inclined toward the rear side of a car body in the front side of an engine 10 and a cooling fan 11, and the radiator 4 is disposed in a position close to a vertical wall section 2 such that the upper part of the radiator 4 is overlapped with the vertical wall section 2 when seen from the front. A guiding member 5 having an upper section 51, a lower side section 52 and a rear side section 53 is fixed by holding the lower end of the radiator 4 between the rear end of the upper surface section 51 and the rear side section 52. A bead 21 is provided as a reinforcing section in the vertical wall section 2 so as to reinforce the vertical wall section 2 and cooling wind is flow-rectified toward the radiator 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front structure of an automobile, which can improve ventilation by ventilating a cooling device, particularly by venting air to an upper part of the cooling device.

[0002]

2. Description of the Related Art Generally, in a cab-over type vehicle, an engine and accessories are installed under a driver's seat and a passenger's seat, which makes it difficult to secure a space for arranging a cooling device. Due to such restrictions as described above, the cooling device is arranged so as to be inclined in the front-rear direction to secure a space for arrangement. For example, in the case where the cooling device is arranged on the vehicle rear side of the front floor vertical wall portion formed by rising and rising rearward of the vehicle such that the upper portion overlaps the vertical wall portion in front view, the vertical wall portion and the front Ventilation is obstructed by the floor panel, and it is difficult for the cooling air to smoothly pass through the cooling device, and it is difficult to sufficiently cool the cooling device. Conventionally, as a means for smoothly circulating the cooling air, for example, in Japanese Utility Model Laid-Open No. 3-69581, in order to cool a fuel tank housed in a space provided on a floor panel and protruding upward, By providing a venturi part formed by locally reducing the cross-sectional area of the path in the traveling path of the outside air, that is, the cooling air formed in the continuous tunnel part at the place, the flow velocity of the outside air is increased and It is described that allows sufficient outside air to flow.

[0003]

However, in the above-mentioned conventional vehicle body structure, it is difficult to circulate the cooling air through the entire cooling device, and in particular, stagnation of ventilation occurs at the upper part of the cooling device to cause insufficient cooling. There was a problem of fear. Further, when the cooling air introduction means of the fuel tank is applied to the cooling of the cooling device that is inclined in the front-back direction, even if the cooling air that hits a part of the cooling device is sufficient, the ventilation side surface of the cooling device There is a problem that it is difficult to supply cooling air to the whole.

An object of the present invention is to solve the above problems, to provide a front structure of an automobile capable of suppressing the stagnation of ventilation in the upper part of the cooling device and allowing smooth cooling air to flow through the entire cooling device. It is to be.

[0005]

In order to achieve the above object, the front structure of an automobile of the present invention has a front floor vertical wall portion, which is formed by rising and rising rearward of the vehicle, and is longitudinally seen in a front view on the vehicle rear side. In a structure in which a cooling device is disposed so that the upper part overlaps the wall part, a guide member for guiding the cooling air to the upper side of the cooling device is provided at the lower part of the cooling device, and the vertical wall part is provided with a substantially vertical direction. By providing the reinforcing portion extending to the part of the cooling air, a part of the cooling air directly passes through the lower half part of the cooling device, that is, a part that does not overlap with the vertical wall part, and the remaining part is guided by the guide member to guide the vertical wall. Flows between the radiator and the radiator, is rectified by the reinforcing portion of the vertical wall portion and is guided to the upper half of the cooling device to improve the cooling performance. As a reinforcing portion, a bead extending substantially vertically of the vertical wall portion is formed, and the bead has a function of rectifying the cooling air guided to the upper side of the cooling device by the guide member. The stagnation of the cooling air in the space formed by the upper part and the upper part of the cooling device can be suppressed to improve the ventilation, and the cooling performance of the cooling device can be improved with a simple structure.
Further, the distance s between the back surface of the vertical wall portion and the upper end of the cooling device can be reduced, and the installation space can be reduced. The guide member includes an upper surface portion formed by rising and rising rearward of the vehicle, a lower side portion extending rearward of the vehicle from a tip of the upper surface portion, and a rear side portion standing upward from a rear end of the lower side portion. By sandwiching and fixing the lower end of the cooling device between the rear end and the rear side of the section, it is possible to reliably guide the cooling air upward, and the required cooling device, especially the lower end of the existing cooling device. It can be attached to any.
By providing a closing member for preventing blow-through of cooling air between the upper end of the cooling device and the upper part of the vertical wall part, the space formed by the upper part of the vertical wall part and the upper part of the cooling device can be improved. Surely suppress cooling air stagnation to improve ventilation better,
Cooling performance can be improved.

[0006]

Embodiments of the present invention will be described with reference to the embodiments. 1 and 2, a front floor panel 1 that covers the floor surfaces of a driver's seat and a passenger seat, and a vehicle rear side end of the front floor panel 1 are continuously provided at a front portion of a cab-over vehicle body A vertical wall portion 2 that rises toward the vehicle, and an engine cover 3 that is provided continuously to the vehicle body rear side end of the vertical wall portion 2 and extends rearward of the vehicle body are provided. Seats and passenger seats are provided.

An engine 10, a cooling fan 11, and accessories (not shown) are arranged in an engine room R below the engine cover 3, and a radiator 4, which is one of cooling devices, is installed in the engine 10. Also, in front of the cooling fan 11, it is arranged so as to be inclined toward the rear side of the vehicle body and is fixed by the bracket 6. The radiator 4 is arranged at a position close to the vertical wall portion 2 so that the upper portion of the radiator 4 overlaps with the vertical wall portion 2 when viewed from the front. The radiator 4 has a lower end protruding forward from the vehicle body, has a substantially triangular cross section, and is formed by rising and rising rearward of the vehicle.
Together with the upper surface portion 51 formed on the substantially cylindrical curved surface, the upper surface portion
A guide member 5 is provided, which includes a lower side portion 52 extending from the front end of the rear portion 51 toward the rear of the vehicle, and a rear side portion 53 standing upward from the rear end of the lower side portion 52. The lower end of the radiator 4 is clamped and fixed by the rear side portion 52. The guide member 5 can be optionally attached to the lower end of a required cooling device such as a radiator, particularly an existing cooling device, by its mounting means.

The vertical wall portion 2 and the upper end of the radiator 4 are provided so as to close the upper end of the gap between the vertical wall portion 2 and the radiator 4, and a seal plate (closing member) 9 for preventing blow-through of cooling air. Are connected by. In front of the radiator 4, below the front floor panel 1, the sub radiator 7
Also, the cooling fan 8 is arranged in a state of being substantially horizontal. The radiator 4 is connected to the engine 9 by a conduit (not shown), and the sub radiator 7 is connected by a conduit (not shown) to the engine 10.
Alternatively, it is connected to an air conditioner (not shown).

As shown in FIG. 2, the vertical wall portion 2 is provided with a plurality of beads 21 projecting toward the radiator 4 side as reinforcing portions, and the beads 21 have a continuous curve upward with the lower end as a starting point and an end point. A pair of rising portions 21A, 21A formed by drawing and extending upward from the start point and the end point, respectively,
Horizontal bead part that connects the upper ends of both rising parts 21A, 21A
21B, the vertical wall portion 2 is reinforced, and the cooling air introduced from the outside of the vehicle and flowing under the front floor panel 1 is rectified toward the radiator 4.

In operation, the cooling air introduced from the outside of the vehicle and flowing under the front floor panel 1 is partially sucked by the cooling fan 8 to cool the sub radiator 7, and the rest is in the direction of the radiator 4. And is guided upward by the guide member 5 at the lower end of the radiator 4 to generate cooling air flowing between the vertical wall portion 2 and the radiator 4. That is, on the downstream side of the sub radiator 7,
The cooling air that flows under the front floor panel 1
A portion of the radiator 4 directly passes through the lower half portion of the radiator 4, that is, a portion that does not overlap the vertical wall portion 2, and the remaining portion passes through the guide member 5.
Is guided by and flows into between the vertical wall portion 2 and the radiator 4.

The cooling air flowing between the vertical wall portion 2 and the radiator 4 is prevented from passing upward through the radiator 4 by the seal plate 41, and the bead (reinforcing portion) of the vertical wall portion 2 is prevented.
It is rectified by 21 and guided to the entire upper half portion of the radiator 4 (that is, the portion overlapping the vertical wall portion 2). The rectifying action of the beads 21 is such that the rising portions 21A generate an air flow directed upward, and the lateral bead portions 21B generate an air flow in the radiator 4 direction.

Therefore, with the above structure, the cooling air can be effectively guided to the upper side of the radiator (cooling device) 4, and the upper end of the radiator 4 and the engine cover 3 can be effectively guided.
It is possible to prevent blow-through of cooling air from the gap between and. Further, the guide member can be arbitrarily attached to a lower end of a cooling device such as a necessary radiator, particularly an existing cooling device by fixing the guide member by sandwiching and fixing the lower end of the radiator 4. Further, due to the air flow in the radiator 4 direction by the horizontal bead portion 21B, stagnation of the cooling air in the space formed by the upper portion of the vertical wall portion 2 and the upper portion of the radiator 4 is suppressed to improve the ventilation. The cooling performance of the radiator 4 can be improved with a simple structure, and the sub radiator 7 can be eliminated. Further, since the distance s between the back surface of the vertical wall portion 2 and the upper end of the radiator 4 can be reduced, the seal plate 5 can be reduced or the seal plate 5 can be omitted, and the radiator 4 can be omitted. The space required for the arrangement can be reduced. Further, by providing the bead 21 which is the reinforcing portion, the strength of the vertical wall portion 2 is increased to facilitate the molding process.

Referring to FIG. 3, another embodiment will be described.
A bead 31 provided on the vertical wall portion 2 is formed so as to protrude toward the vehicle interior. According to this configuration, the cooling air flows in the bead 31 to be rectified and bent toward the radiator (cooling device) 4 at the upper end of the bead 31, so that the cooling air can be efficiently guided to the radiator 4 and the bead 31 can be efficiently guided.
Since 31 does not project to the radiator 4 side, the distance s between the vertical wall portion 2 and the radiator 4 can be further reduced, and the seal plate can be omitted. Therefore, the space required for disposing the radiator 4 can be reduced. It can be made smaller.

As described above, in the above-mentioned embodiment, only the reinforcement forming the bead is described, but the reinforcement composed of a plate material (for example, a channel having an L-shaped cross section).
Can be provided on the vertical wall portion so as to project toward the engine room, and the vertical wall portion can be reinforced and a rectifying function can be provided. However, in the case where the reinforcing portion made of a plate material is provided, the time and labor required for manufacturing are increased as compared with the case where the bead is formed.

[0015]

Since the present invention is configured as described above, it has the following effects. On the vehicle rear side of the front floor vertical wall portion formed by rising and rising to the rear of the vehicle, in which the cooling device is arranged with the upper portion overlapping the vertical wall portion in a front view, in the lower part of the cooling device, By providing a guide member for guiding the cooling air to the upper side of the cooling device and providing a reinforcing portion extending substantially vertically in the vertical wall portion, a part of the cooling air is directly in the lower half portion of the cooling device, that is, After passing through the part that does not overlap the vertical wall part, the remaining part is guided by the guide member and flows between the vertical wall part and the radiator, and is rectified by the reinforcing part of the vertical wall part and the upper half part of the cooling device. To improve the cooling performance. As a reinforcing portion, a bead extending substantially vertically of the vertical wall portion is formed, and the bead has a function of rectifying the cooling air guided to the upper side of the cooling device by the guide member. Suppressing cooling air stagnation in the space formed by the upper part and the upper part of the cooling device to improve the ventilation,
The cooling performance of the cooling device can be improved with a simple structure. The strength of the vertical wall portion 2 is increased to facilitate the molding process. Further, the distance between the back surface of the vertical wall portion and the upper end of the cooling device can be reduced, and the installation space can be reduced. The guide member includes an upper surface portion formed by rising and rising rearward of the vehicle, a lower side portion extending rearward of the vehicle from a tip of the upper surface portion, and a rear side portion standing upward from a rear end of the lower side portion. By sandwiching and fixing the lower end of the cooling device between the rear end and the rear side of the section, it is possible to reliably guide the cooling air upward, and the required cooling device, especially the lower end of the existing cooling device. It can be attached to any. Between the upper end of the cooling device and the upper part of the vertical wall part, by providing a closing member for preventing blow-through of cooling air,
The stagnation of the cooling air in the space formed by the upper portion of the vertical wall portion and the upper portion of the cooling device can be surely suppressed to further improve the ventilation and improve the cooling performance.

[Brief description of drawings]

FIG. 1 is a layout view showing a front structure of an automobile of the present invention.

FIG. 2 is a plan layout view of a front structure of an automobile of the present invention.

FIG. 3 is a perspective view of the front structure of the automobile of the present invention.

FIG. 4 is a perspective view of a guide member of the present invention.

FIG. 5 is a layout view showing another embodiment of the present invention.

[Explanation of symbols]

1 front floor panel, 2 vertical wall parts, 3 engine cover 4 radiator (cooling equipment), 5 guide member, 6 bracket 10 engine, 11 cooling fan

Claims (4)

[Claims] 1. A cooling system, wherein a cooling device is provided on a vehicle rear side of a front floor vertical wall portion formed by rising and rising rearward of the vehicle such that an upper portion of the vertical wall portion is overlapped with the cooling device in a front view. A front structure of an automobile, characterized in that a guide member for guiding cooling air to the upper side of the cooling device is provided at a lower part of the device, and a reinforcing portion extending substantially vertically is provided at a vertical wall part. 2. A bead extending substantially vertically of a vertical wall portion is formed as a reinforcing portion, and the bead has a function of rectifying the cooling air guided to the upper side of the cooling device by the guide member. A front structure for an automobile according to claim 1, wherein the front structure is an automobile. 3. The guide member includes an upper surface portion formed by rising and rising rearward of the vehicle, a lower side portion extending rearward of the vehicle from a tip of the upper surface portion, and a rear side portion erected upward from a rear end of the lower side portion. The front structure of the automobile according to claim 1 or 2, further comprising: and a lower end of the cooling device being sandwiched and fixed between a rear end and a rear side of the upper surface part. 4. The front of an automobile according to claim 1, wherein a closing member for preventing blow-through of cooling air is provided between the upper end of the cooling device and the upper portion of the vertical wall portion. Part structure.