JPH0621834Y2 - Car front spoiler device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a front spoiler device mounted on a lower front end of a vehicle body to prevent the vehicle body from being lifted when the vehicle travels.

[Conventional technology]

When a car travels at high speed, the airflow may enter between the car body and the road surface and the car body may float up, and the running condition may become unstable.To prevent this, at the lower front end of the car body,
A plate-like member in the left-right direction called a front spoiler is projected to limit the airflow entering the lower surface of the vehicle body.

FIG. 3 is a perspective view showing the outline of the front spoiler,
At the front end of the vehicle body (1), a pair of left and right drive devices (2) having an operating shaft that expands and contracts downward are installed, and a spoiler plate (3) is horizontally installed at the lower ends of the left and right operating shafts. is there.

The spoiler plate (3) is a flat plate having a plane orthogonal to the traveling direction, and when stopped or traveling at low speed, it is stored inside the vehicle body as shown by the chain line, and protrudes to the position shown by the solid line during high-speed traveling. , Restrict airflow to the bottom of the vehicle.

[Problems to be solved by the device]

In the above-mentioned front spoiler device, the actuating shafts of the left and right drive devices (2) are covered with a bellows cover that is extendable and concatenated with a plurality of pleats to protect it from dust and rainwater. Moisture adheres to the outer surface of the bellows cover when running in the rain or when washing the car.

In the operating state in which the spoiler plate (3) is lowered, since the bellows cover is extended, the inclination angle of the folds on the outer surface of the cover is large, and the adhering water quickly flows down and is removed. When 3) is raised to the retracted position, the bellows cover has a folded and contracted shape,
Since the folds have a shallow inclination angle and do not easily flow down, and the space between the folds that are vertically adjacent to each other is narrow, surface tension is exerted and the attached water is retained between the folds.

In this way, if moisture adheres to the outer surface of the bellows cover,
When the temperature drops below the freezing point in winter and the attached water freezes, the spoiler plate (3) is driven downwards.
If the bellows cover is cracked and repeated, the bellows cover (15) will eventually be cut off.

The present invention provides means for solving this problem.

[Means for Solving the Problems]

According to the present invention, a protective cover cylinder having a length capable of covering the length of the bellows cover in a contracted state and having an open lower surface is attached to the upper part of the bellows cover to raise the spoiler plate (3) to the retracted position. In this case, the bellows cover is housed inside the protective cover cylinder.

[Action]

When the spoiler plate is raised to the retracted position when stopped or running at low speed, the folds of the bellows cover are housed inside the protective cover cylinder and are protected from water adhesion.

〔Example〕

FIG. 1 is a sectional view of an apparatus according to an embodiment of the present invention, showing a state in which the spoiler plate (3) is lowered and the folds of the bellows cover are extended.

The drive device (2) is shown as an example, but by a motor (5) arranged in a case (4) mounted inside the vehicle body (1), through a gear (6) (7). The screw shaft (8) is rotationally driven, and the nut (9) screwed to the screw shaft (8) is vertically driven.

A slider (10) integral with the nut (9) is attached to the nut (9), and the slider (10) slides along a vertical guide rail (11) protruding from the inner wall of the case (4). Move. The upper end of the vertical operating shaft (12) is fixed to the slider (10), and the operating shaft (12) is supported by the guide bearing (13) to move the nut (9) and the slider (10). Along with this, the case (4) is projected downward and driven up and down.

At the lower end of the working shaft (12), through the attachment (14),
The spoiler plate (3) is attached, and the left and right actuating shafts (12) are synchronously moved up and down to drive the spoiler plate (3).
Is moved to a storage position in the vehicle body (1) and an operating position below the vehicle body.

The part where the operating shaft (12) projects to the outside of the case (4) is covered with a bellows cover (15) that is expandable and contractable by arranging a plurality of pleats so that dust and rainwater can be removed from the operating shaft (12). It is prevented from adhering to the outer surface or entering the inside of the case (4). The upper end of the bellows cover (15) is attached to the lower part of the case (4), and the lower end is fixed around the actuating shaft (12).

A protective cover tube (16), which is the main subject of the present invention, is attached to the lower part of the case (4) where the bellows cover (15) is attached.

The protective cover cylinder (16) has a cylindrical shape with an open lower surface, and the inner diameter of the protective cover cylinder (16) has an appropriate allowance with respect to the outer diameter when the bellows cover (15) is contracted, and the upper part has a conical shape. The diameter of the bellows cover (15) is reduced, and a small diameter portion (17) that is in close contact with the outer peripheral surface of the insertion portion of the bellows cover (15) into the case (4) is continuously provided.
A flange (18) is formed at the upper end of the case (4), engages with the lower end of the case (4), and is attached at a position concentric with the operating shaft (12) and the bellows cover (15).

As shown in the second illustration, the length of the protective cover tube (16) is such that the bellows cover (15) is contracted by raising the spoiler plate (3) and shrinking the bellows cover (15). The size is such that it can completely cover the folds.

That is, when the spoiler plate (3) is lifted while the front spoiler device is inactive when stopped or running at low speed, the bellows cover (15) has the entire folds inside the protective cover tube (16). Housed in. Therefore, water such as rainwater or car wash water should be protected from the protective cover tube (16).
It is shielded by and is prevented from adhering to the bellows cover (15).

Even if the adhering water freezes in the winter, the freezing is only on the outer surface of the protective cover tube (16), and since there is no water adhering to the bellows cover (15), it is between the folds of the bellows cover (15). Thus, the inconvenience of cracking the bellows cover (15) when the spoiler plate (3) descends due to freezing of water is eliminated.

Although the above description has been given based on the illustrated embodiment, the present invention is not limited to the above description, and is
It includes obvious modifications or applications. For example, as a method of attaching the protective cover cylinder (16), in the illustrated embodiment, the diameter of the upper portion of the protective cover cylinder (16) is reduced to form the case (4).
It is inserted between the opening edge of the cover and the bellows cover (15). You may do it.

Further, the above-mentioned embodiment is applied to the bellows cover which covers the operating shaft of the front spoiler device,
The present invention can be applied to the same type of device having a similar bellows cover.

[Effect of device]

(1) When the bellows cover is in a contracted state, the folds are housed in the protective cover cylinder and shielded from adhesion of rainwater and the like.

(2) Even if the adhering water freezes in the winter, the freezing remains only on the outer surface of the protective cover cylinder, and there is no water adhering to the contracted bellows cover.
It is possible to prevent cracks and breakage accidents.

[Brief description of drawings]

FIG. 1 is a view showing a state in which a spoiler plate is lowered in a first embodiment of the present invention, FIG. 2 is a view showing a state in which the spoiler plate is also raised, and FIG. 3 is a perspective view showing an outline of a front spoiler device. Is. (1) …… Body, (2) …… Driving device (3) …… Spoiler plate, (4) …… Case (5) …… Motor, (12) …… Actuating shaft (15) …… Bellows cover, (16) …… Protective cover tube

Claims (1)

[Scope of utility model registration request] 1. A spoiler plate installed on a lower surface of a front portion of a vehicle body is driven up and down by a working shaft extending and contracting downward to a position retracted in the vehicle body and a position protruding downward from the stored position. In a front spoiler device in which the projecting portion of the actuating shaft is covered with a bellows cover in which a plurality of folds are connected in a stretchable manner, in the case where the bellows cover is contracted, the lower end that accommodates the folds is protected. A front spoiler device for an automobile, wherein a cover cylinder is concentrically provided on the upper end portion of the bellows cover with the actuating shaft and the bellows cover.