JPH0439047Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to the cowl structure of an automobile, and is particularly concerned with preventing foreign matter from entering the passenger compartment through the ventilation duct connected to the upper surface of the dash panel top. Regarding measures to prevent this.

(Prior Art) Conventionally, in the cowl structure of an automobile, a plurality of openings for air intake are formed in the cowl panel, and a ventilation duct leading to the passenger compartment is joined to the dash panel top. A device in which air is introduced into a ventilation duct through the plurality of openings is known. In this case, in order to prevent foreign matter such as leaves from entering from the outside, for example,
As disclosed in Japanese Patent No. 182872, a wire mesh is generally attached to the opening of the cowl panel or the opening of the ventilation duct by welding.

(Problem to be solved by the invention) However, as mentioned above, when attaching the wire mesh to the peripheral edge of the upper opening of the ventilation duct by welding, the edge of the wire mesh is attached to the upper opening of the ventilation duct. There are parts that are joined to the periphery of the opening and parts that are not joined, so when the wire mesh vibrates due to engine vibration, etc., the edge of the wire mesh at the unjoined part will close to the upper opening of the ventilation duct. There is a problem in that chattering noise is generated due to repeated collisions with the peripheral edges of the parts.

In view of the above, the present invention aims to avoid collision between the edge of the wire mesh provided to cover the upper opening of the ventilation duct and the peripheral edge of the upper opening, thereby preventing the occurrence of chattering noise. purpose.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides that there is no gap between the edge of the wire mesh and the periphery of the upper opening of the ventilation duct except at the joint between the edge of the wire mesh and the periphery of the upper opening of the ventilation duct. It is intended to be formed.

Specifically, the solution taken by the present invention is such that the cowl structure of an automobile is such that a ventilation duct is joined to the upper surface of the dash panel upper, and the peripheral edge is attached to the peripheral edge of the upper opening of the ventilation duct. A plurality of protrusions are provided at intervals in the circumferential direction of the periphery, and a wire mesh covering the upper opening from above leaves a gap between the wire mesh and the periphery of the upper opening. and is fixed to the protrusion.

(Function) With the above configuration, a plurality of protrusions projecting upward from the periphery of the upper opening of the ventilation duct are provided at intervals in the circumferential direction, and the wire mesh is attached to the upper opening of the ventilation duct. Since it is fixed to the protruding part with a gap between it and the circumferential edge of the metal mesh, the edge of the wire mesh has a gap with the circumferential edge of the upper opening at locations other than the protruding part. Therefore, even if the wire mesh vibrates due to engine vibration or the like, the existence of the gap prevents the edge of the wire mesh from colliding with the peripheral edge of the upper opening.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

1 and 2 show an embodiment of the present invention, in which 1 is a cowl panel that is disposed below a front window (not shown) and has a plurality of openings for taking in air, and 2 is a vehicle compartment 3 and an engine compartment. The dash panel upper 2 and the cowl panel 1 form a cowl structure having a closed cross section in the vehicle width direction.

In addition, the horizontal part 2 of the dash panel top 2
In a, there is a communication port 5 leading to the passenger compartment 3 near the rear of the vehicle body.
is formed, and a ventilation duct 6 having a substantially U-shaped cross section is erected to surround the communication port 5.

Upper opening 6 of the ventilation duct 6
A plurality of protrusions 7, 7, . . . that protrude inwardly and upwardly at regular intervals on both left and right sides are provided on the peripheral edge a. An edge of a mesh-like wire mesh 8 that covers the upper side of the upper opening 6a is bonded and supported on the upper surface of the protrusion 7, and the wire mesh 8 covers the peripheral edge of the upper opening 6a of the ventilation duct 6. There is a gap 9 between the two.

Reference numeral 10 denotes a bulge formed on the front side wall of the ventilation duct 6 so as to protrude toward the front of the vehicle body, and the front end of the wire mesh 8 is joined to the front side of the bulge 10. Further, 11 is a flange for joining the ventilation duct 6 to the horizontal portion 2a of the dash panel upper 2.

Therefore, in the above embodiment, the edge of the wire mesh 8 is connected to the upper opening 6a of the ventilation duct 6.
It is joined only at the protrusion 7 that protrudes inwardly and upwardly from the periphery of the ventilation duct 6, and there is a certain gap 9 between it and the periphery of the upper opening 6a of the ventilation duct 6 in other parts. Therefore, even if the wire mesh 8 vibrates due to engine vibration or the like, the edge of the wire mesh 8 will not collide with the periphery of the upper opening 6a, so that collision noise, that is, chatter noise due to the vibration of the wire mesh 8, will be reduced. It will never occur.

(Effects of the invention) As described above, according to the invention, a plurality of upwardly projecting protrusions are provided at intervals in the circumferential direction on the peripheral edge of the upper opening of the ventilation duct,
Since the wire mesh is fixed to the protrusion with a gap between it and the periphery of the upper opening, the edge of the wire mesh has a gap between it and the periphery of the upper opening at locations other than the protrusion. Therefore, even if the wire mesh vibrates due to engine vibrations, etc., the existence of the gap prevents the edge of the wire mesh from colliding with the periphery of the upper opening. Even if the wire mesh vibrates, it is possible to reliably prevent the occurrence of chattering noise, which is the collision sound between the edge of the wire mesh and the peripheral edge of the upper opening.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and Fig. 1 is a perspective view showing a wire mesh attached to the periphery of the upper opening of the ventilation duct, and Fig. 2 is a vertical cross-section showing the overall schematic structure of the cowl structure. FIG. 2... Datsushi panel top, 6... Ventilation duct, 6a... Upper opening, 7... Projection, 8... Wire mesh, 9... Gap.

Claims (1)

[Scope of utility model registration request] A ventilation duct is joined to the upper surface of the dash panel top, and protrusions projecting upward from the periphery of the upper opening of the ventilation duct are arranged at intervals in the circumferential direction of the periphery. A cowl structure for an automobile, characterized in that a plurality of wire meshes are provided, and a wire mesh that covers the upper opening from above is fixed to the protrusion with a gap between it and the peripheral edge.