JPS6414576U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of a movable rear fin device according to the present invention, FIG. 2 is a schematic configuration diagram of the same movable rear fin device as above, and FIG. 3 is an example of the configuration of a control device for a movable rear fin device according to the present invention. 4 to 6 are schematic configuration diagrams showing different examples of the driving means in the movable rear fin device according to the present invention, and FIG. 7 is a block diagram showing another example of the control device for the movable rear fin device according to the present invention. FIG. 8 is a graph showing an example of control according to the duration of wind pressure of the movable rear fin device to which the control device shown in FIG. 3 is applied, and FIG. Graph showing the change in output over time; Fig. 3b shows the comparison result between the wind pressure sensor output and the set value; Fig. 1c shows the result of processing the signal output outputted by an integrating circuit based on the comparison result in Fig. 1b. Graph d is a graph showing the comparison result between the output of the integrating circuit shown in c of the same figure and the prescribed value of duration,
9 is a graph showing the state of the position detection sensor output during the control state, and FIG. 9 is a graph showing the frequency of occurrence of wind pressure stronger than the operating level of the movable rear fin device to which the control device shown in FIG. 3 is applied. Graphs illustrating control examples, where a is a graph showing changes in the wind pressure sensor output over time, b is a graph showing a comparison result between the wind pressure sensor output and the set value of the operation level, and c is a comparison between b of the same figure. A graph showing the output result after converting the signal output based on the result into a line spectrum trigger pulse using a Schmitts circuit etc. d is a graph showing the output result after converting the signal output into a line spectrum trigger pulse using a Schmitt circuit etc. Figure d shows the trigger pulse output shown in figure c counted at regular intervals. A graph showing the output waveform of a counter circuit that outputs a control pulse when the number of counts within a certain period of time is greater than or equal to a specified number. A graph showing the output signal waveform of the timer circuit that outputs the control signal of
Figures a and b are flowcharts showing an example of a control program for a movable rear fin device to which the control device shown in Fig. 7 is applied. DESCRIPTION OF SYMBOLS 1... Wind pressure sensor, 2... Control device, 3... Actuator, 4... Rear fin main body, 5... Rear fin position detection sensor, 6... Car, 7...
Rear pillar, 8...Rear quarter panel.

Claims (1)

[Scope of utility model registration request] Rear fins are attached to the rear pillar, rear quarter panel, or trunk lid of an automobile to improve crosswind stability when driving.
A storage part is formed in either the rear pillar, the rear quarter panel, or the trunk lid and can store the main body of the rear fin, and when it is not needed when there is no crosswind, it is stored in the storage part and pushed out from the storage part when there is a strong crosswind. a movable rear fin body in the form of a rear fin, a drive means for protruding the rear fin body with respect to the storage portion or swinging, rotating or moving the rear fin body in the storage direction; When the strength of the crosswind is detected and the strength of the crosswind reaches a preset strength or higher, and the strength of the crosswind continues for a preset time or more, or even if the duration is less than the preset time, the frequency of occurrence When the frequency exceeds the predetermined frequency, the drive means is automatically operated to swing, rotate or move the rear fin body to push the rear fin body out of the storage section, and the strength of the wind pressure is set in advance. If the strength is less than the predetermined time, or if the connection time is less than the predetermined time and the frequency is less than the predetermined frequency, the driving means is automatically operated to swing, rotate, or rotate the rear fin body toward the inside of the storage section. A movable rear fin device comprising automatic control means for moving and storing the movable rear fin device in the storage portion.