JPS5936539Y2 - Vehicle front deck side structure - Google Patents

Description

[Detailed description of the invention] This invention relates to a front deck side structure for a vehicle.
In particular, the present invention relates to a front fixed side structure suitable for use in front engine type automobiles.

In the conventional vehicle front deck structure, a space leading to the air intake is formed by disposing an upper frame rear having a top wall and both side walls above the cowl top inner that constitutes the ventilation width, and furthermore, a space leading to the air intake is formed. A cavity communicating with the above space is formed above.

However, in such a conventional vehicle front locking structure, engine noise is emitted from the auxiliary equipment mounting hole, fender mirror mounting hole, weight reduction hole, etc. formed in the wall of the cavity, and also from the front door leading to the cavity. There is a problem in that wind noise from the grille enters the vehicle interior as noise through the air intake ports through the respective spaces.

The level of this noise varies depending on the vehicle type, installed engine, etc., but is at a level that makes the occupants inside the vehicle feel uncomfortable.

This invention aims to solve these problems, and can prevent noise such as engine noise and wind noise from entering the passenger compartment through the air intake port through the space inside the cowl top. An object of the present invention is to provide a front deck side structure for a vehicle.

Therefore, the front deck side structure for a vehicle of the present invention has a closed structure formed by a cowl top outer having a front wall at the front end extending above and below the vehicle and in the vehicle width direction, and a cowl top inner having an air intake into the vehicle interior. A cowl top with a cross section, which cooperates with the cowl top inner to form a space with a closed cross section, and has a U-shaped cross section that communicates with the engine room or the front end of the vehicle from the front wall of the cowl top outer in front of the vehicle. A frame rear is disposed along the longitudinal direction of the vehicle between the cowl top outer and the cowl top inner at a side end of the cowl top in the vehicle width direction, and communicates with the space and prevents water in the cowl top. In a front deck side structure having a drainage port for discharging water to the side in the vehicle width direction from the front wall to the rear of the vehicle between the upper frame rear and the cowl top inner, from the engine room or the front end of the vehicle to the space. In order to prevent intruding noise from entering the vehicle interior via the drain port and air intake port, a sound insulating wall member is disposed within the space on a substantially extension of the front wall in the vehicle width direction. It is characterized by

Hereinafter, a front deck side structure for a vehicle as an embodiment of the present invention will be explained with reference to the drawings. Fig. 1 is a perspective view thereof, Fig. 2 is a sectional view taken along line III in Fig. 1,
FIG. 3 is a perspective view showing the sound insulating wall member.

As shown in FIGS. 1 and 2, a cowl top inner 1 having an air intake port 1a into the passenger compartment is arranged in a concavely curved manner at the front door of the automobile.
A cowl top outer 2 having a front wall 2a extending vertically and in the width direction of the vehicle is arranged in a convexly curved manner, and the cowl top inner 1 and cowl top outer 2 form a cowl top with a closed cross section. (Ventilation cap) C is configured.

Further, in the cowl top inner 1, a gutter 1b for draining rainwater that has entered the cowl top C to both sides of the vehicle is formed along the vehicle width direction and extends to the front deck side portion.

Furthermore, a top wall 3a and both side walls 3b are attached to the front deck side portion of the automobile from the inside of the cowl top outer 2.
, 3C is fixed along the longitudinal direction of the vehicle on the surface of the cowl top inner 1 that does not have the air intake port 1a by spot welding or the like. A closed section space S surrounded by the cowl top inner rear 3 is formed.

That is, the upper frame rear 3 cooperates with the cowl top inner 1 to form the space S.

Note that openings 4 are formed between the lower edges of both side walls 3b and 3C of the upper frame 3 and the gutter 1b formed in the cowl top inner 1, and the space S is located at the lower edge of the side wall 3b. The opening 4 communicates with the air intake port 1a.

That is, this opening 4 communicates with the space S and functions as a drainage port that drains the water in the cowl top C to the side in the vehicle width direction through the gutter 1b.
It is provided between the upper frame rear 3 and the cowl top inner 1 at the rear of the vehicle from the front wall 2a of the outer knob 2.

Moreover, this frontage 4 is formed in a size that enables sufficient drainage for the following reasons.

In other words, the structure is such that rainwater etc. can enter inside the cowl top C, but especially when washing a car, a large amount of water enters in a short period of time, so this water collects inside the cowl top C and flows through the air intake port 1a. In order to prevent this, the opening 4 is formed to have a sufficient size to have sufficient drainage capacity.

Therefore, if no measures are taken, noise such as engine noise and wind noise will enter the space S from the engine compartment and the front end of the vehicle through the cavity T described later, and this noise will naturally be transmitted to the opening 4 and the air intake. It should have entered the passenger compartment through 1a.

Therefore, in this structure, the silencer power top 5 as a sound insulating wall member is disposed at the following position.

That is, in the space S, a silencer power top 5 as a sound insulating wall member as shown in FIG. 3 is arranged so as to cover the space S as shown in FIGS. .

The silencer pull top 5 is fixed at its upper edge in the space S by spot welding or the like at a portion where the top wall 3a of the upper frame rear 3 and the cowl top outer 2 are fixed. , its lower edge,
This is the part where the cowl top inner 1 and the dash panel 6 are fixed, and are fixed by spot welding or the like.

To further explain the arrangement position of this silencer cowl top 5, this silencer cowl top 5 is arranged on a substantially extension of the front wall 2a of the cowl top outer 2 in the vehicle width direction in the space S. Become.

Further, a front fender shield outer 7 is disposed on this front deck side portion so as to partially overlap the front edge of the Atsuba frame rear 3, and this front fender shield outer 7 is provided with a cover front fender shield 8. , forming the lower part of the cavity.

In addition, the lower part of this cavity leads to the front grille in front, that is, to the engine room and the front end of the vehicle, and the wall has holes for attaching auxiliary equipment such as batteries, mirror mounting holes, and weight reduction. A hole is formed, and therefore, as mentioned above, noise such as engine sound and wind noise enters the lower part of this cavity from the engine room and the front end of the vehicle, but these noises are suppressed by the silencer cowl top 5. Since the air is prevented from entering the air intake port 1a through the opening 4
As shown by the arrow in Figure 2, it is clear that it is possible to prevent noise from entering the vehicle interior from the air intake port 1a through the space S and the opening 4, and thereby to significantly reduce the noise level in the vehicle interior. be.

Further, since the silencer cowl I/tube 5 is disposed substantially on the extension of the front wall 2a of the cowl top outer 2 in the vehicle width direction and partitions the space S, the wall surface of the silencer cowl top 5 is provided between the outer wall surfaces of both upper frame rears 3,
This makes it possible to improve the torsional rigidity of the front fender shield outer 7 and the cover front fender shield 8 that constitute the cavity T following the space S, as well as the torsional rigidity of the vehicle body. can also be improved.

Note that the reference numeral 5a in FIGS. 1 and 3 indicates a notch for weight reduction formed in the silencer cowl I to the knob 5, and the reference numeral 9 in FIG. shows the front window.

Further, by sealing the end faces of the silencer cowl I/tube 5 with an appropriate sealing material, the sound insulation effect can be further enhanced.

As described above in detail, the front deck side structure for a vehicle of the present invention has the cowl top outer 2 having the front wall 2a extending in the vertical and width direction of the vehicle at the front end and the air intake port 1a into the vehicle interior. A cowl top C with a closed cross section formed by a cowl top inner 1 is provided, and the cowl top inner has a U-shaped cross section that communicates with the engine room or the front end of the vehicle at the front of the vehicle from the front wall 2a of the cowl top outer 2. An upper frame rear 3 is disposed along the vehicle longitudinal direction between the cowl top outer 2 and the cowl top inner 1 at the vehicle widthwise side end of the cowl top C, and communicates with the space S. Above cowl 1~
In the front stiff side structure, the space is provided with a drain port 4 for draining water in the knob C laterally in the vehicle width direction between the upper frame gloss 3 and the cowl top inner 1 at the rear of the vehicle from the front wall 2a. With a simple configuration in which a sound insulating wall member 5 is disposed almost on the extension of the front wall 2a in the vehicle width direction in the space S, the noise that has entered the space S from the engine room or the front end of the vehicle is absorbed by the drainage water. It is possible to sufficiently prevent the air from entering the vehicle interior via the air intake port 4 and the air intake port 1a, which has the effect of significantly reducing the noise level inside the vehicle interior. This also has the advantage of improving the rigidity of the front fender shield outer 7 and the torsional rigidity of the front fender shield outer 7 and the cover front fender shield 8.

[Brief explanation of the drawing]

The figures show a front rigid side structure for a vehicle as an embodiment of the present invention. Fig. 1 is a perspective view thereof, Fig. 2 is a sectional view taken along the line FIG. 3 is a perspective view showing the sound insulating wall member. 1...Cowl top inner, 1a...
Air intake, 1b... Gutter, 2... Cowl top outer, 2a... Cowl top outer front wall, 3... Upper frame rear, 3a.・
...Top wall of upper frame rear 3, 3b, 3C...
...Both side walls of upper frame rear 3, 4...
- Opening, 5... Silencer cowl top as a sound insulating wall member, 5a... Weight reduction notch for silencer power pull top 5, 6... Dash panel, 7... ...Front fender shield outer, 8...Cover front fender shield, 9...Front fender shield inner, 10...Front window, C...・・・
- Cowl top S...space, T...hollow part.

Claims (1)

[Scope of utility model registration request] It has a cowl top with a closed section formed by an outer cowl top having a front wall extending in the upper and lower direction of the vehicle and in the width direction of the vehicle, and an inner cowl top having an air intake into the vehicle interior, and cooperates with the inner cowl top. The upper frame rear, which has a U-shaped cross section and forms a space with a closed cross section and communicates with the engine room or the front end of the vehicle from the front wall of the front wall of the cowl top in the vehicle width direction, A drainage port is provided along the vehicle longitudinal direction between the cowl top outer and the cowl top inner, and communicates with the space and drains water in the cowl top laterally in the vehicle width direction. In the front stiff side structure located between the upper frame rear and the cowl top inner at the rear of the vehicle, noise that enters the space from the engine room or the front end of the vehicle passes through the drain port and air intake port. A front deck side structure for a vehicle, characterized in that a sound insulating wall member is disposed within the space on a substantially extension of the front wall in the vehicle width direction in order to prevent noise from entering the vehicle interior.