JPH088955Y2 - Movable front spoiler device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a movable front spoiler device mounted on the lower front portion of an automobile.

<Prior art> The front spoiler is installed to improve aerodynamic characteristics of a car at high speed, especially road holding performance, and to improve steering stability, high-speed straightness, etc. There is a movable type.

The movable spoiler performs its function effectively by raising the spoiler and storing it in the vehicle body when the vehicle is stopped or running at low speed, and lowers it when it exceeds a predetermined speed. There is an advantage that you can.

In addition, there are two types of movable spoilers: an air dam type that obtains downforce by using the wind pressure during traveling, and a skirt panel type that obtains downforce by venturi negative pressure with the ground. Various structures have been proposed.

<Problems to be solved by the invention> However, in various conventional skirt panel type spoilers, when descending, part of the wind enters the vehicle body through the gap between the front end of the skirt panel and the lower part of the bumper. There was a problem that the effect of the spoiler was halved, and the front end of the skirt panel, which is the free end, flaps due to wind and generates noise.

Therefore, an object of the present invention is to provide a movable front spoiler device that can effectively prevent wind wraparound and fluttering noise at the front end.

<Means for Solving the Problems> The structure of the present invention for achieving the above object is such that the rear end of a box-shaped skirt panel is pivotally attached to the front lower part of the vehicle body, and the front end side of this skirt panel is used as the front bumper. On the other hand, in a movable front spoiler device that can be raised and lowered according to a vehicle speed by a drive device, an elastic contact plate portion that can be pressed against the front bumper at the panel rising end and the falling end is provided at the front end portion of the skirt panel in the vehicle width direction. It is characterized in that it is provided over substantially the entire width.

<Operation> According to the above configuration, the generation of flapping noise at the rising end and the falling end of the skirt panel is prevented. Further, it is possible to prevent a part of wind from entering the vehicle body at the descending end.

<Embodiment> An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 3, a front bumper 2 is attached to the front of the vehicle body 1, and a skirt panel 3 as a front spoiler is attached to the lower part of the front bumper 2 so as to be able to move up and down.

As shown in FIG. 1, the front bumper 2 includes upper and lower reinforcements 5a and 5b having U-shaped cross sections which are appropriately fixed to the front end cross member 4 and the like, and both reinforcements 5a and 5b. And a bumper fascia 6 made of synthetic resin for covering the above. In FIG. 1, 7 is a laterally long opening for sending cooling air to a radiator (not shown), and 8 is its guide duct.

The skirt panel 3 is formed in a box shape, and descends during high-speed traveling to generate a Venturi negative pressure with the ground, thereby fulfilling the function of a spoiler.

The rear end of the skirt panel 3 is pivotally attached to the front bumper 2 in a vertically rotatable manner, and the front end thereof is bent forward to form a bent plate portion 3a as an elastic contact plate portion thereof. The inside of the lower reinforcement 5b is moved up and down by a driving device 10 described later.

Further, the bent plate portion 3a is configured to elastically and strongly press the upper and lower horizontal plate portions of the lower reinforcement 5b at the rising end and the falling end of the skirt panel 3. This is the shape of the skirt panel when not restrained by the lower reinforcement 5b, as shown in FIG. 4, when the front side of the bent plate portion 3a has a rising end and a falling end, the lower reinforcement This can be done by choosing to be located outside the upper and lower horizontal plates in 5b.

As shown in FIG. 2, the drive device 10 includes a rotating shaft 12 extending in the vehicle width direction and rotatably supported by the front end cross member 4 via a pair of left and right bearing members 11. A pair of left and right cranks 13 fixed to both ends of the shaft 12.
And a crank arm 17 having an upper end coupled to the pins 14 of both cranks 13 and a lower end coupled to the intermediate portion of the skirt panel 3 in the front-rear direction with pins 16 through brackets 15 as appropriate. , And a hysteresis motor 18 that rotationally drives the rotary shaft 12. In the example shown. Output shaft 18a of hysteresis motor 18 is rotating shaft 12
A crank 19 which is disposed on the same axis line and which is fixed to the output shaft 18a is connected to the above-mentioned pin 14 in a pair with the crank 13.

The hysteresis motor 18 raises the skirt panel 3 to the ascending end (stored position) when the vehicle speed is 80 km / h or less, and conversely lowers the skirt panel 3 to the descending end (use position) when the vehicle speed exceeds 80 km / h. The rotation is controlled by a controller (not shown).

With such a configuration, the skirt panel 3 is raised by the drive device 10 and stored in the vehicle body 1 when the vehicle is stopped or running at a low speed. As a result, damage due to interference of the skirt panel 3 with the ground side is avoided in advance.

On the other hand, when traveling at high speed, it is lowered to a predetermined position. As a result, the desired function of the spoiler is achieved and the maneuverability is improved.

Further, in the present embodiment, at the above-mentioned ascending end and descending end of the skirt panel 3, the bending plate portion 3a is pressed against the lower reinforcement 5b with a certain amount of force and does not flutter due to wind, etc. Does not occur.

Further, the fact that the bent plate portion 3a is in pressure contact with the lower reinforcement 5b at the descending end also prevents a part of wind from entering the inside of the vehicle body 1, which reduces the function of the spoiler. It is also avoided that it is done.

Needless to say, the present invention is not limited to the above embodiment, and various changes such as the shape of the skirt panel can be made without departing from the gist of the present invention.

<Effect of device> As described above, according to the present invention, the front end of the skirt panel is brought into pressure contact with the bumper at the rising end and the falling end, so that the spoiler's function can be fully exerted while the flapping noise is generated. The effect of suppressing the occurrence of is also obtained.

[Brief description of drawings]

FIG. 1 is a side sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a perspective view of the same driving device, FIG. 3 is a front half side view of an automobile, and FIG. FIG. In the drawings, 1 is a vehicle body, 2 is a front bumper, 3 is a skirt panel, 3a is a bent plate portion, and 10 is a drive device.

Claims (1)

[Scope of utility model registration request] 1. A movable front spoiler device in which a rear end portion of a box-shaped skirt panel is pivotally attached to a front lower portion of a vehicle body, and a front end side of the skirt panel can be raised and lowered with respect to a front bumper by a drive device according to a vehicle speed. The movable front spoiler device according to claim 1, wherein an elastic contact plate portion that can be pressed against the front bumper at the panel rising end and the falling end is provided at the front end portion of the skirt panel over substantially the entire width in the vehicle width direction.