JPS5918894Y2 - Vehicle cowl ventilator - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cowl ventilator for a vehicle, and particularly to a cowl ventilator for a vehicle that can increase the amount of air blown into the vehicle interior without causing water intrusion into the vehicle interior.

Generally, a cowl is arranged along the width direction of the vehicle body between the front window and the bonnet of a vehicle, and one of the cowls has a box throughout the vehicle that defines an air introduction path for ventilation in the vehicle interior. There is a type cowl.

The cowl introduces air from an air intake port provided on the top surface near one end into the vehicle interior through an air supply port provided on the bottom surface near the other end. Rainwater, etc. may enter from the intake.

Therefore, in order to prevent this intruding water from flowing into the air supply port and to guide the introduced air to the air supply port, a portion of the cowl is provided around the air supply port and from the edge thereof. A rising cylindrical duct is provided, and the cowl is provided with a drain port.

However, the bottom surface of a conventional cowl is a flat surface, and the duct rising from the flat surface is provided upright on the bottom surface, and its opening does not open toward the air intake port but opens upward. In addition, since the opening edge thereof is spaced uniformly from the upper surface of the cowl, the duct provides a large air resistance.

In order to reduce this air resistance and reduce the amount of air blown into the vehicle interior, it is possible to set the height of the duct low and increase the distance from the opening of the duct to the top surface of the cowl. In some cases, since the height of the duct is reduced, there is a risk that the intruding water will flow into the air inlet of the cowl.

For this reason, in the conventional cowl ventilator including the cowl provided with the duct, it has not been possible to ensure a sufficient amount of air flow without causing water intrusion into the vehicle interior.

Therefore, an object of the present invention is to provide a cowl ventilator for a vehicle that can increase the amount of air blown without causing water intrusion into the vehicle interior.

According to the present invention, a duct provided in the cowl and rising from the edge of the cowl air supply port is opened toward the air intake port provided in the cowl, and the opening of the duct is formed into a wavy curved surface. In addition to reducing air resistance due to the duct, a groove is formed on the bottom surface of the cowl so that water that has entered the cowl can be quickly discharged from a drainage port provided in the cowl.

The features of the present invention will become more apparent from the following description of the illustrated embodiment. , the front window 14 of the car 12
The cowl 18 has a box-like shape as a whole and is disposed along the width direction of the vehicle body between the hood 16 and the hood 16, and a cylindrical duct 20 is disposed within the cowl.

As clearly shown in FIG. 2, the cowl 18 includes a plate-shaped outer member 2 having a substantially L-shaped cross section similar to the conventional one.
2 and an inner member 24, and both members 22, 24 are connected to each other so as to form a box shape as a whole.

A well-known air intake port 26 (see FIG. 2) is provided near one end of the upper surface 18a of the cowl 18, and an air intake port 26 (see FIG. 2) is provided at the bottom of the cowl 18.
Near the other end of the cowl at 8b is an air intake port 26.
An air supply port 28 is provided which is spaced apart from the air supply port 28 .

At the other end of the cowl 18, a drain port 30 (similar to the conventional one) is provided.
(see Figure 1).

The air supply port 28 is arranged in the width direction of the vehicle body, that is, in the cowl 1
It is a rectangular opening defined by a pair of long sides along the longitudinal direction of 8 and a pair of short sides perpendicular to the long sides, and the opening is connected to a conventional pro-armotor unit 32 (not shown), which is well known in the past. It is connected to an air cooler or air heater located below the instrument panel on the passenger side.

A groove 34 is formed in the bottom surface 18b of the cowl 18 in the vicinity of the air intake port 28, that is, in the vicinity of the rectangular opening 28, and extends along the long side toward the drain port 30.

The bottom surface of the groove has a depression angle toward the drain port 30,
The groove 34 guides water such as rainwater that enters the air introduction path defined by the cowl 18 from the air intake port 26, that is, into the cowl 18, to the drain port 30.

The duct 20 has the air supply port 28 in the cowl 18.
are arranged around.

duct) 20 includes a pair of long peripheral wall portions 20a, 2 corresponding to the long sides of the air supply port 28, as shown in FIG.
0a, and a pair of short circumferential walls 20b, 2Qc corresponding to the short sides of the air supply port 28, the cylindrical member has a substantially rectangular cross section, and the edge of the lower end opening 36 is provided with an attachment extending outward. A flange 38 is formed.

One of the short circumferential walls 20b extends along the flange 3 along a smooth arcuate curved surface extending toward the other short circumferential wall 20C.
6, and the upper portion of the other short circumferential wall 20C is bent in a direction away from the one short circumferential wall 20b.

The height from the flange 36 to the upper edge of one short circumferential wall 20b is greater than the height to the upper edge of the other short circumferential wall 20c, and the upper edge of the pair of long circumferential walls 20a is S. Accordingly, the upper end opening 40 of the duct 20 is located along the curved surface of the duct 20.
Open toward C side and along the wavy curved surface.

A lip 42 is formed at the edge of the upper end opening 40 of the duct 20 at a portion corresponding to part of the other short circumferential wall 20C and the pair of long circumferential walls 20a.

The tip of this lip 42 is rounded downward at the short circumferential wall portion 20C as shown in FIG.
Further, as shown in FIG. 5, the tip of the long peripheral wall portion 20a is rounded laterally.

Although the lip 42 can be made unnecessary, in order to further reduce the air resistance due to the duct 20, which will be described later, and to reliably prevent intruding water from entering the air supply port 28,
Preferably, a lip 42 is provided as shown.

As shown in FIG. 1, the duct 20 is connected to the cowl 18 with its upper end opening 40 facing the air intake port 18H and its lower end opening 36 aligned with the air supply port 28.
The mounting flange 38 and the cowl bottom surface 18 b
It is fixed to the cowl bottom surface 18b by welding or the like at its attachment portion 38 with a molded foam cooler interposed between the cowl and the cowl bottom surface 18b.

In the cowl ventilator 10, the duct 2
0 is from the edge of the air supply port 28 to the air intake port 26
Since the upper end opening 40 is open toward the air intake port 26 and follows a wavy curved surface, the air introduced from the air intake port is not subjected to strong resistance by the duct 20 as in the conventional case. The introduced air is smoothly guided into the duct 20 through the upper end opening 40, and the introduced air is fed into the vehicle interior from the air supply port 28 via the blower motor unit 32.

As a result, we were able to increase the effective ventilation area by approximately 30% compared to the conventional method.

Further, the intruding water entering the cowl is prevented from entering the air supply port 28 by the duct 20, and is quickly guided to the drain port 30 by the groove 34, and is then transported from the drain port to the outside of the vehicle. Therefore, the intruding water does not accumulate in the cowl 18, and this intruding water does not exceed the duct 20 and enter the vehicle interior from the air supply port 28.

In the above description, an example has been described in which the duct 20 is a cylindrical member having a substantially rectangular cross section corresponding to the shape of the air supply port 28. However, the duct may have various cross sections depending on the shape of the air supply port. It can be formed by a flat cylindrical member.

According to the present invention, as described above, the air resistance is reduced by the duct in the cowl, and the water that enters the cowl can be quickly discharged to the outside of the vehicle by the groove provided on the bottom of the cowl. Thereby, the amount of air blown into the vehicle interior can be increased without causing water intrusion into the vehicle interior.

Furthermore, according to the present invention, the height of the cowl can be reduced without reducing the amount of air blown compared to the conventional method, and as a result, the height of the bonnet can be set lower than the conventional method. This is extremely advantageous in terms of vehicle design.

[Brief explanation of drawings]

1 and 2 are a plan view and a side view, respectively, schematically showing a part of an automobile equipped with a cowl ventilator according to the present invention, and FIG. FIG. 4 is a perspective view of the duct according to the invention, and FIGS. 4 and 5 are cross-sectional views taken along lines IV--IV and II--X shown in FIG. 3, respectively. 18: Cowl, 18b: Bottom of cowl, 20: Duct, 2
6: Air intake port, 28: Air supply port, 30: Drain port, 3
4: Groove, 40: Duct opening.

Claims (1)

[Scope of utility model registration request] A cowl having a drainage port and an air intake port and an air supply port provided separated from each other to define an air introduction path into the interior of the vehicle; A cowl ventilator for a vehicle includes a cylindrical duct surrounding the air supply port and rising from an edge thereof to prevent intruding water from flowing into the air supply port, the duct being connected to the air supply port. A cowl ventilator for a vehicle, characterized in that the cowl has an opening along a wavy curved surface that opens toward an inlet, and the cowl has a groove on the bottom surface thereof for guiding the intruding water to the drainage port.