JPS5885764A - Movable air balance panel - Google Patents

Abstract

PURPOSE:To lift and lower an air balance panel at low and high speed running time, prevent the damage of the same panel, and improve the running safety by operating an actuator through a vacuum switchover valve by means of an air speed sensor. CONSTITUTION:When a diaphragm 11 that constitutes a wind pressure sensor 7 by the wind pressure following the high speed running is moved against a spring 12, a rod 13 is shifted and a contact 14 is made to contact. Thus, an electric current is applied to the lead wire 15 of a vacuum switchover valve 8 and a solenoid valve 16 is excited and then a plunger 17 is attracted. As a result, a valve 18 is opened and the vacuum is applied to an outlet 20 from an inlet 19 communicated to a manifold 6 and then to an actuator 2. Consequently, the rod of the actuator 2 is lowered and an air balance panel 1 connected to the lower end 4 swings centering a fulcrum 30 and is lowered. On the other hand, at a low speed running, the diaphragm 11 is restored by the spring 12 and the above- mentioned panel 1 is raised.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in movable air balance panels.

Air balance panels are installed to improve aerodynamic characteristics, and it is known that reducing the bottom ground clearance as much as possible when driving at high speeds improves driving stability and helps improve fuel efficiency. .

However, when driving at low speeds such as when driving on rough roads, unless the lower end of the air balance panel is raised above the ground, there is a risk that the panel will be damaged by road surface irregularities or obstacles.

The present invention automatically lowers the ground clearance of the lower end of the air balance panel when driving at high speeds, and automatically increases the ground clearance at the lower end of the air balance panel when driving at low speeds.A wind speed sensor is provided, and its operation activates the vacuum switching valve. By applying this vacuum to an actuator, we aim to provide a movable air balance panel that can automatically switch the height position of the air balance panel according to the purpose specified in 011 during high-speed and low-speed driving. .

Embodiments of the present invention will be explained below with reference to the drawings. Fig. 1 shows a movable air balance panel (1) showing an embodiment of the present invention.
A side view of a car equipped with
[It is a cross-sectional view of the actuator (2) that connects (g) to the air balance panel (/).

Although FIG. 1 shows the case where the lower end of the air balance panel (1) is raised high, FIG. 3 shows the case where the lower end of the pZ channel (1) is lowered from the ground.

In FIG. 3, (5) is a grill, and (A) is a manifold. (7) is a wind pressure sensor installed on the rear side of the grill (j), and the structure shown in FIGS. 9 and S is shown as an example. When the speed exceeds a predetermined speed, A vacuum switching valve (g) installed near the vacuum switch valve (g) is operated to allow vacuum to flow into the vacuum inlet (9) of the actuator (k) through the switch valve (g). The wind pressure sensor (7) detects the wind pressure (10
) hits the diaphragm (//), and the diaphragm (l
/) moves against the spring (12) due to wind pressure, the mouthpiece (13) attached to the diaphragm (II)
moves to bring the contacts into contact (0) This causes current to flow through the lead wire (15) of the vacuum switching valve (f) shown in Figure 6, energizing the solenoid (16) and turning the plunger (17). Therefore, when the lubricant (1g) is opened, the vacuum flows from the inlet (19) that communicates with the manifold (A) to the outlet (20), and from the vacuum inlet (9) to the actuator (2) and Inflow.

The wind pressure sensor (7) in Figure S detects the wind (10) with the blade (2/
), turn the generator (2, 1) to generate a current, amplify this current as necessary, and connect the lead wire (, 2j), and suck the plunger (17) to the inlet (/9).
This allows the vacuum to flow through the outlet (9).

Fig. 7 shows a system in which the wind pressure sensor (7) of Fig. 1I and the vacuum switching valve (g), which is different from Fig. 4, are combined into one body.
The rod (/3) of the wind pressure sensor (7) is connected to the piston (2) of the vacuum switching valve (g), and at low speeds it is connected to the atmosphere inlet (J) and the vacuum inlet (9) of the actuator (2). Exit (the one that was connected to the second one is
When running at high speed and the wind (111EE caused by /) exceeds a predetermined value, the spring (1
2), the rod (/3) moves to the right, moves the piston (2) to the right, and opens the piston hole (211a).
Vacuum (σ) from the vacuum population (/9) flows into the actuator (2) from the inlet (9) of the actuator (2) through the outlet (20). (27) and atmospheric chamber (:1g
), and when entering M, the diaphragm (easy) moves downward against the line 1 nong (29) &. Then, the rod (3) attached to the diaphragm (JA) also descends. Therefore, the air nozzle nozzle (1) is connected to the lower end (t) of the rod (3).
swings about the fulcrum (30) and descends from the state shown in FIG. 7 to the state shown in FIG. 4. In addition, actuator (2)
The negative royal chamber and atmospheric chamber are arranged vertically and horizontally with 42 rods (3
) may be replaced by a single non-knock mechanism, and the nog knob (1) may be lowered when negative pressure is supplied.

Next, when running at a low speed, the wind pressure sensor (7) in FIGS. 4 and 7 returns to the left side of the diaphragm (II).

In the case of Figure 9, switch (/41) Di is turned off,
Since the thread/id (/A) becomes de-energized, the communication between the vacuum inlet (19) and the outlet (〃) is cut off, and the vacuum vacuum enters the vacuum inlet (9) of the actuator (K). Since the inflow stops, the diaphragm (2) returns to its original position due to the compression force of the spring (9), and the rod (2) returns to its original position.
3) rises and pulls up the air balance panel (1) to the state shown in Figure 1. In the case of Fig. 7, the piston (2) returns to the left and the communication between the vacuum pump (19) and the outlet (20) is cut off.On the other hand, in the wind pressure sensor (7) of Fig. S,
Due to low speed driving, the rotation of the blade (21) weakens and it becomes impossible to generate a current strong enough to excite the thread/id (/A), so the valve (1g) is closed in the same way and the air balance panel (1) G1 is opened as described above. be pulled up.

Since the present invention is configured as explained in detail above,
The air balance panel is automatically lowered when driving at high speeds. Therefore, it is possible to improve driving stability and fuel efficiency. Furthermore, when driving at low speeds on rough roads, the actuator automatically operates in reverse and raises the air balance panel, thereby preventing the air balance panel from colliding with uneven road surfaces or obstacles.

[Brief explanation of the drawing]

Fig. 1 is a side view of an automobile equipped with a movable air balance panel showing an embodiment of the present invention, Fig. 2 is a side sectional view showing an embodiment of the actuator provided in Fig.
A side view showing a state in which the air balance panel is lowered from the state shown in the figure, FIG. 9 and FIG. The sectional view shown in FIG. 7 is a side sectional view when a wind pressure sensor and a vacuum switching valve showing another embodiment are directly connected. Explanation of the main parts of the diagram C... Movable air balance panel... Actuator 3... Rondo (connection member)
D...Lower end S...Grill 6...Manifold (negative pressure source) 7...Wind pressure sensor noise...Vacuum switching valve 9-...Vacuum inlet io...Wind
20...Outlet 2A...Diaphragm
Core... Negative Royal Family 2g... Atmospheric Chamber Co9.
...Suge Niji, Ng Figure 2

Claims (1)

[Claims] In a vehicle equipped with a movable air balance panel, an actuator that is activated to lower the panel when negative pressure flows in, a wind pressure sensor that is activated by the wind speed when the vehicle is at a predetermined speed or higher to switch a vacuum switching valve, and the switching valve is A movable air balance panel 0 characterized in that the actuator has a negative pressure chamber into which negative pressure from a negative pressure source flows when switched, and operates against the biasing force when the negative pressure chamber becomes negative pressure.