JPH0450172Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a structure for preventing water from entering the ventilator of a cab-over type automobile.

(Prior Art) The inside/outside air switching box of the ventilator of a cab-over type automobile is arranged at a position indicated by the symbol V in FIG.

The structure around the conventional inside/outside air switching box was
This will be explained based on the diagram. An opening 2 is formed in a horizontal portion 1a at the front end of the cab floor panel 1. A lower end of an inside/outside air switching box 3 is connected to the opening 2 . The upper end of this box 3 is communicated via a duct 4 to a heater device (not shown). Further, a damper 5 for switching between outside air and inside air is swingably provided in this box. When the damper 5 is in the position shown by the solid line, outside air is taken into the heater device, and when it is placed in the position shown by the chain line, the inside air is circulated through the window hole 3a. An upper edge 6a of a headlamp support 6 serving as a partition plate is fixed to the rear edge of the horizontal portion 1a of the cab floor panel 1 by spot welding. Therefore, the inclined portion 1b of the cab floor panel and the headlamp support 6 form a space S that becomes narrower as it goes upward. A headlamp 7 is supported on the support 6. In FIG. 5, reference numeral 8 indicates a front panel, 9 a headlamp bezel, 10 a front bumper, and 11 a front wheel. When outside air is taken in, the air is taken into the space D from between the headlamp 7 and the headlamp bezel 9, and then is taken into the vehicle interior through the inside/outside air switching box 3.

(Problems to be Solved by the Invention) In FIG. 5, when a puddle W exists on the road surface, the water splashed up by the front wheels 11 turns into a jet and heads forward. The water droplets moving along the inclined portion 1b of the cab floor panel enter the space S. As mentioned above, since the cab floor panel 1 and the headlamp support 6 are spot welded, a gap exists between them, albeit partially. Therefore, the water droplets that have entered the space S in the form of a jet are blown out from the gap into the opening 2 of the inside/outside air switching box 3 in the form of mist. Even if the gap is about 0.1 mm, a mist of water will spray out. When the damper 5 is placed at the outside air intake position as shown by the solid line and the fan of the heater device (not shown) rotates to suck outside air, the mist water droplets are sucked into the duct 4. ,
There is a problem.

In order to solve this problem, it would be possible to eliminate the gap between the cab floor panel 1 and the headlamp support 6, but since the area is extremely narrow, it would be difficult to work with, and it would be necessary to use a sealing method. There is a problem that the cost increases.

(Means for Solving the Problems) The present invention proposes that in order to prevent water from entering the ventilator without increasing costs, the periphery of the opening of the cab floor panel is bent downward or the box A water drainer that prevents the movement of water along the lower surface of the cab floor panel by having the lower edge protrude downward from the opening and facing the gap between the spot weld between the cab floor panel and the partition plate. It is characterized by its structure with sections.

(Function) The water that is splashed up by the front wheels and moves along the cab floor panel sprays out in the form of mist from the gap between the spot welds between the cab floor panel and the headlamp support, which serves as a partition plate. This water collides with and adheres to the drainage section and falls without entering the inside/outside air switching box.

(Example) Hereinafter, the present invention will be explained in detail based on the illustrated example. Note that members having the same functions as those explained in FIG. 5 are designated by the same reference numerals.

In FIG. 2, a drain portion 21 is formed at the periphery of the opening 20 of the cab floor panel 1 by bending the periphery downward. This draining section 21
hangs down to a position opposite to the joint between the horizontal portion 1a of the cab floor panel 1 and the upper edge 6a of the headlamp support 6. More specifically, the draining portion 21 is provided so as to face the gap between the horizontal portion 1a and the upper end portion 6a, which are spot-welded to each other.

Now, as shown by arrow a, when the water that has become a jet is forced into the space S, this water flows into the horizontal part 1a.
The liquid tends to eject into the space D from the minute gap between the upper edge 6a and the upper edge 6a. However, these mist-like water droplets are
It collides with the draining part 21 located at the front in the spouting direction and adheres to its outer peripheral surface. The mist-like water droplets adhering to the outer circumferential surface 21a of the draining portion 21 eventually grow into relatively large water droplets, and then drip as shown by arrow b.

Figure 3 shows the opening 2 of the cab floor panel 1.
shows the structure when it is reinforced with reinforcement reinforcement 30. In this case, the draining section 31
is formed downward at the periphery of the opening of the reinforcement reinforcement 30. This draining part 31 is the horizontal part 1
It is the same as in the previous embodiment that it hangs downward from the joint between a and the upper end portion 6a.

In FIG. 4, the lower end of the inside/outside air switching box 3 is fitted into the opening 2, and the lower edge thereof is projected downward from the joint between the horizontal part 1a and the upper end 6a to form a draining part 40. This is an example.

The effects of the embodiment shown in FIGS. 3 and 4 are as follows:
Since it is similar to the example shown in FIG. 2, its explanation will be omitted.

In the illustrated embodiment, the gasket normally provided between the cab floor panel 1 and the inside/outside air switching box 3 is omitted.

(Effects of the invention) As described above, according to the invention in which a water drain is provided at the lower end of the inside/outside air switching box, water droplets that move along the cab floor panel and become mist reach the inside/outside air switching box. Since there is no water intrusion, water intrusion into the ventilator is prevented.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of a cab-over type automobile to which the present invention is applied, Fig. 2 is a vertical cross-sectional end view showing an embodiment of the present invention, and Figs. 3 and 4 are different embodiments of the present invention. A vertical cross-sectional view of the main part showing the
FIG. 5 is a vertical cross-sectional end view showing the structure around a conventional ventilator. 1... Cab floor panel, 2, 20... Opening, 3... Inside/outside air switching box, 21, 31, 4
0... Draining section.

Claims (1)

[Scope of Claim for Utility Model Registration] A partition plate is provided in front of the front wheels to hang down from the front lower surface of the cab floor panel, and its upper edge is spot-welded to the lower surface of the cab floor panel, A cab-over type vehicle having an opening formed in a portion of the cab floor panel in front of the partition plate, an outside air intake port connected to the opening, and an inside/outside air switching box disposed above the cab floor panel. In the ventilator, the cab floor panel and the partition plate are spot-welded by bending the peripheral edge of the opening downward or by causing the lower edge of the inside/outside air switching box to protrude downward from the opening. A structure for preventing water from entering the ventilator, characterized by having a draining part facing the gap between the ventilators.