JPH0680012A - Cowl top structure - Google Patents

Abstract

PURPOSE:To facilitate extremely maintenance of an air cleaner and so on installed in an air box while using a through-hole and a hole by forming the through-hole and the hole in a cowl top panel and a cowl top cover. CONSTITUTION:Maintenance hole and through-hole 22 are formed in a cowl top panel 34 situated above an air box and a cowl top cover 21 situated above this cowl top panel 34. A maintenance cover 27 is arranged to cover these hole and through-hole 22. A flange 23 is arranged on the peripheral part surface side of the through-hole 22, and a groove part fitted to the flange 23 is arranged on the reverse side peripheral part of the maintenance cover 27, and a foaming material is arranged to be interposed compressively on the outer peripheral surface of a cowl top cover hole part between the flange and the groove part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cowl top structure for an automobile having a structure for facilitating maintenance and inspection of an air cleaning device, a wiper device and the like incorporated in a cowl top panel of the automobile.

[0002]

2. Description of the Related Art Conventional cowl top structures for automobiles include, for example, a closed cowl structure as shown in FIG. 1 and an open cowl structure as shown in FIG. First, the closed cowl structure shown in FIG. 1 will be described.

Reference numeral 1 is an engine hood, and 2 is a seal rubber for sealing an engine room. 3 is an air box, 4 is a cowl top panel, and a dash upper panel 5 is incorporated in the cowl top panel 4. A cowl top cover 6 is located above the cowl top panel 4. An air intake flange 7 is provided inside the air box 3, and the moisture that has entered the air box 3 is prevented from entering the air intake flange 7 due to the height of the air intake flange. Further, the dash upper panel 5 is provided inside the flange 7 of the air intake flange 7.
There is a hole portion 8 for connecting to the interior of the vehicle.

Next, the open cowl structure shown in FIG. 2 will be described.

Reference numeral 9 is an engine hood, and 10 is a seal rubber for sealing the engine room. Reference numeral 11 denotes an air box, and the air box 11 includes a cowl top panel 12 and a dash upper panel 13.
A cowl top cover 1 is provided above the air box 11.
There is 4. In addition, an air intake flange 15 is provided inside the air box 11, and the structure is such that moisture that has entered the air box 11 cannot enter the air intake flange 15 due to the height of the flange. Inside the air intake flange 15, there is a hole 16 of the dash upper panel 13, which serves as a communication port with the vehicle interior. A foam material 18 seals between the outer periphery of the lower surface of the cowl top cover 14 and the cowl top panel 12 and the windshield 17.

[0006]

However, in the closed cowl structure described above, the cowl top panel 4 is incorporated into the air box 3 because the air box 3 is covered by the cowl top panel 4. For example, since maintenance and inspection of an air cleaning device, a wiper device, and the like (not shown) cannot be performed outside the passenger compartment, there is an inconvenience that a device requiring maintenance cannot be installed in the air box 3.

In the open cowl structure, the air box 3 is removed by removing the cowl top cover 14.
Although it is possible to perform maintenance and inspection of the device installed therein, once the cowl top cover 14 is removed, the foaming material 18 for sealing deteriorates and the sealing performance is impaired. There is a problem in that the negative pressure generated by the drive of a blower fan (not shown) causes the moisture to reach the lower surface of the cowl top cover 14 and be sucked into the air intake flange 15 to lose the waterproof property.

[0008]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to such a conventional problem, in which a cowl top panel is provided with a through hole and a flange which stands up at the periphery of the through hole is formed. In addition, when a maintenance cover is formed in which a groove is formed to cover the through hole and the flange is fitted, and when the maintenance cover is attached to the through hole,
By interposing a waterproof material between the flange and the groove, it is possible to prevent water from entering the air intake and facilitate maintenance and inspection of the equipment installed in the air box. To provide.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described in detail with reference to the embodiment shown in the drawings. The same parts of the structure of this embodiment and the structure described in the conventional example shown in FIG. The same reference numerals are used and the description of the same structural parts is omitted.

In FIGS. 3 to 5, reference numeral 21 denotes a resin cowl top cover, which is a cowl top cover 2.
1 is provided at a position corresponding to the vehicle body 20 as shown in FIG. 3, for example, a substantially rectangular through hole 22 having a size into which a worker's hand can enter. As means for forming the through hole 22, FIG.
As shown in FIG. 1, a resin-molded cowl top cover 21
Weak groove 2 that is advantageous for forming through holes 22 on the back surface of the material
By forming 4 in advance, the through hole 22 can be extremely easily formed by cutting along the groove 24. Further, a flange 23 is formed so as to rise along the periphery of the through hole 22 on the upper surface of the cowl top cover 21, and the rising inclined wall is provided outside the flange 23, that is, on the opposite side of the through hole 22. 25 is formed on the periphery. Furthermore, the cowl top cover 2 above
On the back surface of No. 1, a waterproof wall 26 that is formed annularly along the hole edge of the through hole 22 and is hung down is integrally formed.

Reference numeral 27 denotes a maintenance cover which is attached to the cowl top cover 21 via a mounting screw 28 in order to close the through hole 22. The maintenance cover 27 rises up corresponding to the inclined wall 25. Inclined portion 29
An annular groove 30 formed next to the inclined portion 29 and into which the flange 23 is engaged, and the mounting screw 2
A seat surface 41 through which 8 is penetrated is formed.

Attach the mounting screw 28 to the cowl top cover 2
As shown in FIG. 7, the cowl top cover 21 is provided with a threaded boss 31 as shown in FIG. 7, or as shown in FIG.
The flange 42 for press-fitting and fixing the nut 32 may be formed on the back surface of the. 33 is a cowl top cover 2
1 shows waterproof urethane which is interposed between 1 and the maintenance cover 27. Reference numeral 34 denotes a cowl top panel to which the cowl top cover 21 having the above structure is attached.
A hole 35 is formed at a position corresponding to the through hole 22 of the cowl top panel 34, and a peripheral edge of the hole 35 is formed by a drain receiving portion 36, and further, an end surface of the drain receiving portion 36 and the cowl. A waterproof urethane 37 is interposed between the top cover 21 and the top cover 21 to enhance waterproofness. In FIG. 9, a punch hole 38 for screw hole drilling is provided in a state before the screw hole is drilled in the cowl top cover 21. Easy drilling process.

The structure of this embodiment has been described above. Next, the operation thereof will be described. The cowl top panel 34 and the cowl top cover 21 are formed with through holes 22 and holes 35 into which a worker's hand can be inserted, for example. Therefore, the maintenance of the air cleaning device and the like installed in the air box 12 can be carried out very easily by utilizing the through holes 22 and the holes 35. The through hole 22 provided in the cowl top panel can prevent moisture from entering the air box 12 through the through hole 22 due to the attachment of the maintenance cover 27. That is, as shown in FIG. 7, when the maintenance cover 27 is attached onto the through hole 22 of the cowl top cover 21, the flange 23 provided on the cowl top cover 21 is fixed to the maintenance cover 2
7 is fitted in the groove 30 provided in the groove 7, and a waterproof material 39 such as urethane is interposed in the fitting portion.
Further, between the cowl top cover 21 and the maintenance cover 27, there is a gap 39 formed between the rising sloped wall 25 and the sloped portion 29, so that the suction of water due to the capillary phenomenon is prevented, and, for example, Even if water enters the gap 39 between the cowl top cover 21 and the peripheral edge of the maintenance cover 27, the rising water is blocked by the rising inclined wall 25 from flowing toward the through hole 22. It

Further, since the rising flange 23 is provided between the rising sloped wall 25 and the through hole 22, even if there is water that has been raised along the sloped wall 25, the flange 23 is also provided. Blocked by 23, through hole 2
No water will penetrate into 2.

The above is the means for preventing the flow of water on the surface of the cowl top cover 21. For example, for the water (drain) attached to the back surface of the cowl top cover 21, the action of the waterproof wall 26 that is suspended. The water is shielded by the water and is dropped from the lower end edge of the waterproof wall 26 onto the drain receiving portion 36 provided on the cowl top panel 34. The drain on the drain receiving portion 36 follows the drain receiving portion 36. It is discharged to the outside.

Further, the drain receiving portion 36 has a rising portion 4
0, and the leading end of the rising portion is in contact with the back surface of the top cover 21 via the waterproofing urethane 37. Therefore, the moisture in the drain receiving portion 36 causes the rising portion 40 to move. The airtightness of the inside of the air box 3 can be enhanced without being invaded into the air box 3 beyond it.

[0017]

As described above, according to the present invention, the cowl top panel 34 located above the air box and the cowl top cover 2 located above the cowl top panel 34.
1, a maintenance hole 35 and a through hole 22 are formed, and a maintenance cover 27 for covering the hole 35 and the through hole 22 is further provided. Further, a flange 23 is provided on the peripheral surface side of the through hole 22, and A groove portion 30 that fits with the flange 23 is provided on the back side peripheral portion of the maintenance cover 27.
And a foam material 3 which is compressed between the flange 23 and the groove 30 and the outer peripheral surface of the cowl top cover hole.
According to this, the cowl top structure has the cowl top panel 34 and the cowl top cover 2
1 includes, for example, a through hole 22 and a hole 3 into which an operator's hand can be put.
5 is formed, the maintenance of the air cleaning device and the like installed in the air box 12 can be carried out very easily by utilizing the through holes 22 and the holes 35. Further, the through hole 22 provided in the cowl top panel is formed by attaching the maintenance cover 27.
The effect that water can be prevented from entering the air box 12 from 2 and a cowl top structure having excellent waterproofness can be provided.

[Brief description of drawings]

FIG. 1 is a structural explanatory view showing a closed cowl structure of a conventional example.

FIG. 2 is a structural explanatory view showing an open cowl structure of a conventional example.

FIG. 3 is a structural explanatory view of a cowl top panel provided with holes according to an embodiment of the present invention.

FIG. 4 is a structural explanatory view of a cowl top structure according to an embodiment of the present invention.

FIG. 5 is a structural explanatory view of a cowl top cover and a maintenance cover according to an embodiment of the present invention.

FIG. 6 is an explanatory diagram of a cowl top cover according to an embodiment of the present invention.

FIG. 7 is an explanatory view of a waterproof structure of the cowl top structure according to the embodiment of the present invention.

FIG. 8 is an explanatory view of a waterproof structure of the cowl top structure according to the embodiment of the present invention.

FIG. 9 is an explanatory diagram of a cowl top cover according to an embodiment of the present invention.

[Explanation of symbols]

21 ... Cowl top cover 22 ... Through hole 23 ... Flange 24 ... Weak groove 25 ... Standing inclined wall 26 ... Waterproof wall 27 ... Maintenance cover 28 ... Mounting screw 29 ... Inclined portion 30 ... Groove portion 31 ... Screw embedding boss 32 ... Nut 33 ... Waterproof urethane 34 ... Cowl top panel 35 ... Hole 36 ... Drain receiving part 37 ... Waterproof urethane 38 ... Punch hole 39 ... Waterproof material 40 ... Rise 41 ... Seat 42 ... Flange

Claims (6)

[Claims] 1. A cowl top panel (34) located above an air box and the cowl top panel (34).
A maintenance hole (35) and a through hole (22) are formed in the cowl top cover (21) located above, and a maintenance cover (27) covering the hole (35) and the through hole (22) is further provided. Further, a flange (23) is provided on the peripheral surface of the through hole (22), and a groove (30) fitted to the flange (23) is provided on the rear peripheral edge of the maintenance cover (27). The cowl top structure is characterized in that a foam material (39) is provided between the flange (23) and the groove portion (30) and is compressed between the outer peripheral surface of the cowl top cover hole portion. 2. The cowl top structure according to claim 1, wherein the through hole (22) formed in the cowl top cover (21) is formed above the general surface. 3. A cowl top cover (21) has a screw boss (31) at the periphery of a through hole (22), and a maintenance seat (27) has a screw seat surface (41) at the outer periphery thereof. The cowl top structure according to claim 1, further comprising a foam material (33) compressed by the screw boss (31) and the screw seat surface (41). 4. The cowl according to claim 1, 5 or 6, wherein a gap (39) is provided in a portion other than the fitting portion and the screw tightening portion of the cowl top panel (34) and the maintenance cover (27). Top structure. 5. The back side of the cowl top cover (21),
The cowl top structure according to claim 1, further comprising a weak groove for forming the through hole (22). 6. The cowl top cover (21) is provided with a punch hole (38) for drilling and a press-fitting nut (32) receiving portion flange (42) on the back side thereof.
The cowl top structure shown.