JPS6332549Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rear spoiler device for an automobile.

Generally, in FIG. 1, a rear spoiler B is provided on the rear upper surface of a vehicle body A to receive wind from traveling along the outer surface of the vehicle body A.

However, as a conventional rear spoiler for automobiles, a fixed rear spoiler B is used, so if the size and shape of the rear spoiler B is determined according to the degree of ground contact force required for the rear wheels when driving at high speed or when braking is applied, During normal driving,
There is a problem in that large air resistance is constantly applied to the vehicle body A, deteriorating the driving performance.

That is, in a car equipped with such a conventional rear spoiler for cars, a large acceleration cannot be obtained and the fuel efficiency deteriorates.

On the other hand, it is possible to reduce the air resistance by reducing the size of the rear spoiler B, but the problem is that such a rear spoiler B does not provide sufficient ground contact force for the rear wheels. There is.

The present invention attempts to solve this trade-off problem, by making it possible to increase the ground contact force of the rear wheels when the vehicle brakes are applied, while reducing air resistance during normal driving. Another object of the present invention is to provide a rear spoiler device for an automobile, which is capable of finely operating according to the vehicle speed of the automobile, and which also allows the spoiler itself to perform a braking action.

Therefore, the rear spoiler device for an automobile of the present invention is supported by a link member on the rear upper surface of the vehicle body such that the front end is supported movably along the upper surface of the vehicle and the rear end is movable up and down. The vehicle speed detector comprises a spoiler, an actuator that can drive the front end of the spoiler or the link member, a vehicle speed detector that detects the speed of the vehicle, and a brake state detector that detects the brake state of the vehicle. The rear end height of the spoiler is adjusted according to the vehicle speed in response to a detection signal from the brake state detector, and the rear end height of the spoiler is adjusted to approximately the maximum height in response to a detection signal from the brake condition detector. The present invention is characterized in that a control device for controlling the actuator is provided.

Embodiments of the present invention will be described below with reference to the drawings. Figures 2 and 3 show a rear spoiler device for an automobile as a first embodiment of the present invention, and Figure 2 shows a rear spoiler device of the present invention in the part shown in Figure 1. Fig. 3 is a perspective view thereof, and Fig. 4 and 5 are
The figures show a rear spoiler device for an automobile as a second embodiment of the present invention.
The figure is a perspective view thereof, and FIG. 6 is an electric circuit diagram in each embodiment of the present invention.

As shown in FIGS. 2 and 3, in the first embodiment of the present invention, a rear spoiler 1a is provided on the rear upper surface 2a of the trunk lid 2 at the rear of the vehicle body A (see FIG. 1) to receive the traveling wind along the outer surface of the vehicle body A. is provided.

The front end side portion of the rear spoiler 1a is guided by a longitudinal slide guide 6 and is movable in the longitudinal direction (vehicle length direction).

Further, the rear end side part of the rear spoiler 1a is pivotally connected to a link member 8, and is pivoted in the vertical direction (vertical direction).
It has become possible to move to

The link member 8 is guided by a vertical sliding guide 6', is arranged to be movable in the vertical direction, and is driven to project by the hydraulic actuator 3 that constitutes a spoiler projecting drive mechanism.

As shown in FIG. 6, the hydraulic actuator 3 receives an ejection control signal (supply of pressure oil) from a hydraulic control system 10 as a control device, and moves the link member 8.
control protrusion. The amount of protrusion at this time is adjusted by the hydraulic control system 10. In this way, the height of the rear end of the rear spoiler 1a is adjusted.

Further, the hydraulic control system 10 is adapted to supply pressure oil to the hydraulic actuator 3 in response to a brake depression signal from a brake pedal 11 serving as a brake state detector.

Note that the wires may be connected so that the speed signal from the speed detector 12 is sent to the control device 10. In this case, the rear spoiler 1a has a rear end height that is adjusted as appropriate depending on the vehicle speed signal from the speed detector 12. It is determined.

Since the first embodiment of the present invention is constructed as described above, during normal driving, the rear spoiler 1a is maintained at an appropriate rear end height (see symbol C in FIG. 2), and the air resistance is kept small.

Also, when the brake is applied, the symbol D in Fig. 2
As shown in the figure, the rear spoiler 1a is displaced to the maximum rear end height, improving the ground contact of the rear wheels, increasing straight-line stability, and increasing air resistance, so that the rear spoiler 1a can function as a brake. It also performs functions.

Note that when the vehicle is stopped or the engine is stopped, the rear spoiler 1a is retracted into the vehicle body A so as to be flush with the rear upper surface 2a of the trunk lid 2, as shown by the symbol E in FIG.

As shown in FIGS. 4 and 5, in the second embodiment of the present invention, the rear end of the rear spoiler 1b is pivotally supported by one end of the link member 8a by a hinge 9'.
The other end of the link member 8a is pivotally supported on the rear upper surface 2a of the trunk lid 2 by a hinge 9, and in this way, the rear spoiler 1b and the link member 8a are connected to each other.
It is configured to be bendable by a hinge 9'.

The front end of the rear spoiler 1b is guided by a longitudinal slide guide 6, and the hydraulic actuator 3 drives the arm 8' in the horizontal direction.

Also in this second embodiment, the height of the rear end of the rear spoiler 1b is adjusted according to the vehicle speed, and the height of the rear end of the rear spoiler 1b is adjusted to the maximum height when the brake is applied. Almost the same effects as in the embodiment can be obtained.

Note that even when the control device 10 receives a brake state signal from the brake pedal 11 as a brake state detector, the hydraulic actuator 3 is configured not to operate unless the vehicle speed signal from the speed detector 12 is detected at a predetermined value or higher. In this case, the rear spoilers 1a, 1b are used within the effective vehicle speed, and the operation of the rear spoilers 1a, 1b can be stopped during low-speed braking.

Further, as the spoiler protrusion drive mechanism, an electric type or a mechanical type may be used. In this case, a solenoid coil, a motor, a wire, etc. are driven in response to a brake activation signal from the brake pedal 11. configured.

As described above in detail, according to the automobile rear spoiler device of the present invention, the following effects and advantages can be obtained.

(1) During normal driving, the height of the rear end of the rear spoiler can be maintained at an appropriate level depending on the vehicle speed, thereby achieving the optimum ground contact force depending on the vehicle speed.

(2) When the brakes are applied, the height of the rear end of the rear spoiler is fully adjusted until it reaches its maximum height.
The ground contact force of the rear wheels increases, and the rear spoiler itself also performs a braking action, providing a powerful braking effect.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a rear spoiler arranged at the rear of an automobile, Figs. 2 and 3 show a rear spoiler device for an automobile as a first embodiment of the present invention, and Fig. 2 shows the part of Fig. 1. 3 is a longitudinal cross-sectional view showing the spoiler of the present invention, FIG. 3 is a perspective view thereof, and FIGS. 1 is a vertical sectional view showing the spoiler of the present invention, FIG. 5 is a perspective view thereof, and FIG. 6 is an electric circuit diagram in each embodiment of the present invention. 1a, 1b... Rear spoiler, 2... Trunk lid, 2a... Rear upper surface of trunk lid, 2b
... Rear end of the trunk lid, 3 ... Hydraulic actuator constituting the spoiler protrusion drive mechanism, 6 ...
...Guide for sliding in the longitudinal direction, 6'...Guide for sliding in the vertical direction, 7...Guide roller, 8, 8
a...Link member, 8'...Arm, 9,9'...
Hinge, 10... Hydraulic control system as a control device,
DESCRIPTION OF SYMBOLS 11... Brake pedal as a brake state detector, 12... Speed detector, 13... Link mechanism, A... Vehicle body.

Claims (1)

[Scope of utility model claims] A spoiler whose front end is supported movably along the top surface of the vehicle and whose rear end is supported vertically by a link member on the rear upper surface of the vehicle body, and the front end of the spoiler or the link member. The spoiler includes an actuator that can be driven, a vehicle speed detector that detects the speed of the vehicle, and a brake state detector that detects the brake state of the vehicle, and receives a detection signal from the vehicle speed detector and adjusts the spoiler according to the vehicle speed. A control device is provided that controls the actuator to adjust the height of the rear end of the spoiler and adjust the height of the rear end of the spoiler to approximately the maximum height in response to a detection signal from the brake condition detector. An automotive rear spoiler device featuring: