JP3530988B2 - Air spoiler - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wing type air spoiler mounted on a rear portion of a vehicle such as an automobile.

[0002]

2. Description of the Related Art A conventional wing-type air spoiler of this type is a wing having three legs.
Main leg type, or 2 with two legs on the wing
The main leg type is the mainstream, and the one leg type air spoiler with one leg on the wing part is mostly used because it cannot withstand opening and closing due to insufficient rigidity and reduction of tightening torque. The reality is that it has not been done.

However, as a social tendency of the air spoiler, considering a situation where the duck tail type (mounting fit type) is changed to the three-leg type and the current two-leg type, the one-leg type air spoiler is considered. It is judged that development will be certain as the times pass.

Further, in the manufacture of an air spoiler, SMC compression molding in which a sheet-shaped material in which glass fiber is impregnated with an unsaturated polyester resin is laminated on a mold according to the weight and shape of the parts and is molded by a pressing force. Generally, the air spoiler manufactured by this SMC compression molding method is not suitable for manufacturing a one leg type air spoiler because it is very heavy.

On the other hand, the air spoiler manufactured by the blow molding method is light and can be said to be suitable for manufacturing a one leg type air spoiler.

[0006]

However, when a one-legged air spoiler is manufactured by the blow molding method, the legs are hollow, so that a crack is generated in the attaching part for attaching the leg to the trunk of the automobile. It was necessary to devise to support the deformation of the wing.

There is a technique disclosed in Japanese Utility Model Laid-Open No. 5-62390 as a structure of an air spoiler having a hollow inside, although it is not a one leg type air spoiler.
This disclosed technology has a structure in which a hollow portion is provided by adhesively fixing the upper portion and the lower portion, which are separately formed plastic molded bodies, at their respective peripheral edges, and a rib protruding on the inner surface of the lower portion, A cushioning material is interposed between the rib and the inner surface of the upper portion facing the rib to prevent sink marks from being generated on the surface of the upper portion.

Further, as a mold structure for forming a hidden rib inside the hollow molded body when the hollow molded body is molded by the blow molding method, there is a technique disclosed in Japanese Patent Laid-Open No. 6-71738. This disclosed technique has a structure in which a slide plate is provided only on one side of two molds that form a molding cavity. When the slide plate is fixed to a protruding position and the parison is lowered to a predetermined position, both slide plates are fixed. The mold is closed, the part of the parison sandwiched between the tip of the slide plate and the inner surface of the other mold is welded, and when air is blown into the parison, the slide plate is pulled out almost at the same time to form a hidden rib. .

The present invention has been made in view of the above problems, and an object thereof is to make a wing portion and one leg portion integrally blow-molded with a synthetic resin that can endure as a product. It is to provide an air spoiler consisting of and.

[0010]

In order to achieve the above object, the air spoiler according to the invention of claim 1 is an air spoiler comprising a wing portion and one leg portion integrally blow molded with a synthetic resin. The leg side reinforcing rib is formed at a middle portion of the leg portion in the vehicle front-rear direction, in which a parison is pushed in a tapered shape from both side walls in the vehicle width direction of the leg portion toward opposite side walls. It is characterized in that the tip ends of these leg side reinforcing ribs are butted against each other and connected .

Therefore, the leg-side reinforcing ribs can support the wing portion in order to prevent deformation of the wing portion along the vehicle width direction, and cracks in the mounting portion caused by the hollow leg portion are not generated. To prevent. Also,
By making the leg side reinforcing ribs tapered, it is possible to suppress the thinning of the tip end portions, and by attaching the tip end portions of the leg side reinforcing ribs to each other, the strength and rigidity are improved and blown together with a synthetic resin. Molded wing and 1
Enables commercialization of an air spoiler consisting of two legs.

Further, an air spoiler according to the invention 請 Motomeko 2, wing portions which are blow molded integrally with a synthetic resin
And this leg has a leg at the center in the vehicle width direction.
The air spoiler, wherein the leg is in the vehicle front-rear direction.
At the position that is the middle part of the
From the two side walls of the foot part in the vehicle width direction to the other side wall facing
Once the parison was pushed in and formed, and
Provided with leg reinforcement ribs that are butted against each other and connected.
And are characterized .

In order to achieve the above-mentioned object, a claim
The air spoiler according to the invention of claim 3 is claim 1 or 2.
In the air spoiler according to the item 1, the vehicle of the wing part
In the middle of the vehicle width direction, from the lower part of the wing above
The parison is pushed in toward the side part in a tapered shape.
Reinforced ribs on the wing side that are formed along the vehicle longitudinal direction
Align the wing side reinforcing ribs in the vehicle width direction.
At the same time, the tip of the wing side reinforcing rib and the wing
There is a specified clearance between the inner surface of the upper part of the
I got it.

Therefore, the wing-side reinforcing ribs are present.
By doing so, warp deformation of the wing part at high temperature is prevented,
Strength and rigidity can be improved. Also clear
By providing the lance, the tip of the wing side reinforcement rib
Part contacts the inner surface of the upper part of the wing part
The resulting surface sinkage of this upper part can be eliminated
It

[0015]

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a rear portion of a vehicle to which an air spoiler according to the present invention is attached, FIG. 2 is a perspective view of an air spoiler according to the present invention, FIG. 3 is a sectional view taken along the line AA of FIG. 2, and FIG. It is a bottom view of the air spoiler concerning this invention.

An air spoiler 10 according to the present invention has a hollow wing portion 1 blow-molded from a reinforced styrene resin (ABS), and a central lower portion of the wing portion 1 integrally formed with the wing portion 1. And a hollow leg portion 2 that is blow molded. The air spoiler 10 is attached to the rear portion (trunk lid 21) of the vehicle 20 by the attachment portion (seat surface portion) 7 at the lower end portion of the leg portion 2.

The width of the leg portion 2 in the vehicle width direction (left-right direction) is 10 to 20% of the total length of the air spoiler, and the height of the leg portion 2 is 10 to 20% of the total length of the air spoiler.
The width of the leg portion 2 in the vehicle width direction is 1 of the total length of the air spoiler.
When it is less than 0%, the left and right of the wing part 1 are wavy, and when it is more than 20%, the design becomes muddy, and the refined and sharp impression does not appear. Therefore, as described above, the width of the leg portion 2 in the vehicle width direction is 10 to 20% of the total length of the air spoiler.

Further, when the height of the leg portion 2 is 10% or less of the total length of the air spoiler, the impression as one leg is diminished,
If it is 20% or more, there is a problem in strength at high speed. Therefore, the height of the leg portion 2 is 10 to 2 of the total length of the air spoiler.
It is set to 0%.

That is, the wing portion 1 has a wing body 1A which is a hollow body having a flat closed cross section, and both ends of the wing body 1A are closed. Further, a pair of hidden ribs, which are hidden ribs, are arranged on the wing body 1A at positions equidistant from the center point in the vehicle width direction, with their axis a aligned along the vehicle front-rear direction (front-rear direction). I am allowed.

That is, these wing-side reinforcing ribs 3
At the time of blow molding of the wing body 1A, the lower part 1a of the wing body 1A is formed by the rib forming procedure using the slide plate for rib forming described in the related art.
The parison is pressed in a tapered shape from the inner surface of the wing toward the inner surface of the upper portion 1b, and the front end portion 3a of the wing side reinforcing rib 3 and the wing body 1 are formed.
A clearance of about 5 to 10 mm is provided between the inner surface of the upper portion 1b of A and A.

The presence of the wing-side reinforcing ribs 3 as described above prevents warpage and deformation of the wing portion 1 at high temperatures, and improves strength and rigidity. Further, by providing the clearance, the surface sink mark of the upper side portion 1b which occurs when the tip end portion 3a of the wing side reinforcing rib 3 comes into contact with the inner surface of the upper side portion 1b of the wing body 1A is eliminated.

Further, the leg portion 2, the bottom center of the wing part 1, which is blow molded integrally with the wing section 1, leg body is a hollow body having a substantially square-shaped closed cross-section 2A, and the left and right surface portions 2a and 2b, which are both side walls of the leg body 2A, have the wing body 1
It is composed of a curved surface continuous with the lower part 1a of A, and at the center of the inner surface of these left and right surface portions 2a, 2b, leg side reinforcing ribs 4 which are hidden ribs along the vertical direction are respectively formed at the center of the leg body 2A. Toward the side wall (opposite side walls), and these leg side reinforcing ribs 4 are provided at their tip portions 4a.
Butt each other near the center of the leg body 2A.

That is, the leg side reinforcing rib 4 is formed by the rib forming procedure using the slide plate for rib forming described in the prior art at the time of blow molding of the leg body 2A performed together with the wing body 1A. Is pressed into a tapered shape, and the leg-side reinforcing ribs 4 have a thickness of about 6.0 to 7.0 mm.

Since the leg side reinforcing ribs 4 extend in the vehicle width direction, that is, in the left-right direction, the wing portion 1 is supported to prevent deformation of the wing portion 1 along the vehicle width direction. This prevents the generation of cracks in the mounting portion 7 due to the hollow legs 2.
Further, by thinning the leg side reinforcing ribs 4, it is possible to suppress the thinning of the tip end portions 4a, and by abutting the tip end portions 4a of the leg side reinforcing ribs 4 to each other, the strength and rigidity are improved.

The leg body 2A which is the mounting portion 7
4 to 6, a mounting plate (iron plate) 5 is mounted on the bottom surface 2c by insert molding, and three mounting bolts 6 are mounted on the mounting plate 5.

Then, the mounting bolt 6 of the mounting plate 5 is passed through the trunk lid 21 of the vehicle 20 and fastened to a nut (not shown), whereby the air spoiler 10 is attached to the trunk lid 21 of the vehicle 20. It is attached. As a result, the mounting support force in terms of vibration resistance and opening / closing durability can be significantly improved.

[0028]

As described in the foregoing, in the air spoiler according to the present invention, the leg-side reinforcing ribs can support the wing portions in order to prevent deformation of the U Ingu portion along the vehicle width direction However, the generation of cracks in the mounting portion due to the hollow legs is prevented. Moreover, we can be suppressed thinner tip by tapering the leg-side reinforcing ribs, have improved strength and rigidity by applying come together butt the tip end of the leg-side reinforcing ribs, integrally with the synthetic resin It is possible to commercialize an air spoiler consisting of a blow molded wing part and one leg part.

Further, in the air spoiler according to the invention of claim 3, the presence of c Ingu side reinforcing ribs to prevent warping deformation of the wing portions at a high temperature, it is possible to improve the strength and rigidity . Further, by providing the clearance, occurs when the tip of the wing-side reinforcing ribs contacts the inner surface of the upper portion of the window I <br/> ring portion, it can be eliminated surface sink of the upper portion.

[0030]

[Brief description of drawings]

FIG. 1 is a perspective view of a rear portion of a vehicle equipped with an air spoiler according to the present invention.

FIG. 2 is a perspective view of an air spoiler according to the present invention.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a bottom view of the air spoiler according to the present invention.

FIG. 5 is a plan view of a mounting portion of a leg portion of the air spoiler according to the present invention.

6 is a sectional view taken along the line CC of FIG.

[Explanation of symbols]

1 wing section 2 legs 3 Wing side reinforcement rib 4 Leg side reinforcement rib 4a tip

Claims (3)

(57) [Claims] 1. An air spoiler comprising a wing portion integrally formed by blow molding with a synthetic resin and one leg portion, wherein the leg portion has an intermediate portion in the vehicle front-rear direction in a vehicle width direction of the leg portion. the leg-side reinforcing ribs parison is formed is pushed in a tapered shape toward the opposite side walls from the side walls is provided and abuts the distal end of the leg reinforcing ribs to each other
An air spoiler characterized by being connected . 2. A woven wire integrally molded by blow molding with a synthetic resin.
The legs at the center of the wing and this wing in the vehicle width direction.
An air spoiler having a portion, the leg of the vehicle front
Position in the middle of the rear direction, spaced upward from the lower end
On the other side facing from both side walls of the leg in the vehicle width direction
The parison is pushed into the wall and is tapered.
An air spoiler that is provided with leg reinforcing ribs that are connected to each other by being abutted against each other . 3. An intermediate portion of the wing portion in the vehicle width direction
From the lower part of the wing to the upper part
The parison is pushed into the taper and is formed in front of the vehicle.
Wing side reinforcement ribs along the rear direction are provided
Align the side reinforcing ribs in the vehicle width direction and
Between the tip of the reinforcing rib on the wing side and the upper side of the wing.
A predetermined clearance is provided between the inner surface and the inner surface, or
Air spoiler described in 2 .