JPH0466324A - Sun roof device - Google Patents

Abstract

PURPOSE:To disolve the problem to generate large wind sound when a lid is sucked due to negative pressure at the time of high speed running thereby decreasing riding comfortableness by compensating phenomenon to turn into uncomplete close state caused by sucking of sun roof influenced by the negative pressure generated at the time of high speed running. CONSTITUTION:A first car speed judgment part 21 of a controller 17 judges that the speed of an automobile has reached the level so that a roof 1 part is subjected to strong negative pressure at the time of high speed running and then a lid 2 is sucked upwards. A second car speed judgement part 22 judges the speed of automobile has reached the level so that there is no fear for the lid 2 of being sucked upwards with no application of negative pressure to the roof 1. A negative pressure compensation part 23 receives the judgement outputs from the first and second judgement parts 21, 22 to give them to upper and lower drive circuits 14, 15. As a result, a motor 16 moves reversely to drive the lid 2 up or down slightly by the set amount.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a sunroof device for an automobile.

(Prior Art) Conventionally, in general, in a sunroof device for an automobile, as shown in FIG. Tilt-up operation to raise the rear end side diagonally as shown in a), and tilt-down operation to lower the rear end side from the fully closed state in Figure (b) to the lower side as shown in Figures (c) and (d). Further, the entire lid 2 is slid rearward to be opened and closed (see Japanese Utility Model Publication No. 120018/1983).

(Problem to be Solved by the Invention) However, with such a conventional sunroof device, especially when the car is traveling at high speed, even in the fully closed state shown in FIG. 8(a), the roof 1 may be damaged due to strong wind pressure. Although the lid 2 is made of glass or a metal panel, the lid 2 near the center of the vehicle (OX) is sucked upward slightly, as shown in Figure (C). If taken to an extreme, it will bend as shown by the broken line, resulting in an incompletely closed state in which a step is created between the weather strip 3 and the opening edge of the roof 1, as shown in FIG. 3(b).

If such an incompletely closed state occurs during high-speed driving, there is a problem in that wind noise is generated, which impairs ride comfort during high-speed driving.

This invention was made in view of these conventional problems, and it is necessary to keep the sunroof completely closed even when driving at high speeds, and the wind noise caused by the sunroof being incompletely closed. To provide a sunroof device capable of eliminating deterioration of ride comfort due to

[Configuration of the Invention (Means for Solving the Problem) The sunroof device of the invention of claim 1 comprises: a sunroof drive means for tilting up and tilting down the sunroof from a fully closed state; and a vehicle speed sensor for detecting the vehicle speed of an automobile. ,
an incompletely closed state detecting means for detecting an incompletely closed state of the sunroof that is slightly upwardly shifted from a fully closed state; The sunroof negative pressure correction means drives the sunroof drive means in a tilt-down direction to lower the sunroof to a fully closed state when an incompletely closed state of the sunroof is detected.

Further, the sunroof device of the invention of claim 2 includes a sunroof driving means for tilting up and tilting down the sunroof from a fully closed state, a sunroof fully closed state detecting means for detecting a fully closed state of the sunroof, and a sunroof fully closed state detecting means for detecting a fully closed state of the sunroof. A displacement detection sensor that detects the amount of vertical displacement; and a sunroof negative pressure that, when the displacement detection sensor detects the amount of upward or downward displacement of the sunroof, corrects the position of the sunroof by this amount of displacement and moves it to the fully closed position. and a correction means.

(Function) In the sunroof device of the invention of claim 1, the vehicle speed of the automobile is detected by the vehicle speed sensor, and when the vehicle speed sensor detects a vehicle speed of a predetermined value or higher, the roof portion becomes under negative pressure due to high-speed driving; If the sunroof is sucked out and is in the incompletely closed state, the incompletely closed state detection means detects the incompletely closed state of the sunroof.

When the incompletely closed state detecting means detects the incompletely closed state of the sunroof, the sunroof is lowered by the negative pressure correcting means until the incompletely closed state detecting means no longer detects the incompletely closed state of the sunroof, and the sunroof is completely closed. This prevents the wind noise caused by the sunroof being incompletely closed when driving at high speeds.

In the sunroof device of the invention of claim 2, if the sunroof is displaced upward or downward by a predetermined value or more for some reason in the fully closed state, the displacement detection sensor detects the amount of displacement, and the sunroof negative pressure correction means corrects the displacement. By correcting the sunroof according to the amount of the sunroof, it is possible to prevent the sunroof from being incompletely closed due to the suction of the sunroof due to the negative pressure generated especially when driving at high speeds, to suppress the generation of wind noise, and to improve ride comfort.

(Example) Hereinafter, embodiments of the present invention will be explained in detail based on the drawings.

FIG. 1 shows a block diagram of an embodiment of the invention according to claim 1, and includes a vehicle speed sensor 11 for detecting the vehicle speed of an automobile, and a displacement from a fully closed state of a lid 2 having a configuration to be described in detail later. A displacement detection sensor 12 for detection and an automobile ignition switch (IGN, 5W) 1B are provided as external human power. It also includes an upper drive circuit 14 and a lower drive circuit 15 for the lid 2, and a motor 16 that rotates forward and backward to drive the lid 2 slightly up or down by a set amount, and further includes signals to these external input/output sections. It is equipped with a control device 17 that performs processing.

As shown in FIG. 2, the displacement detection sensor 12 is equipped with piezoelectric switches 1.8u and 18d at two locations above and below the opening edge of the roof 1, which turn on when pressure is applied and turn off when not. As shown in the figure, these piezoelectric switches 1.
The signals from 8u and 18d are connected to logic elements 192 to 1.9C.
The displacement of the lit 2 is detected by the outputs 20a to 20c from the logic elements 1.9a to 1.9C, respectively. That is, the logic element 19a is an AND gate of the forward input of the upper piezoelectric switch 18u and the inverted input of the lower piezoelectric switch 18d, and the logic element 19b is an AND gate of the forward input of the piezoelectric switches 18u and 18d.
The logic element 19c is an AND gate of the inverting input of the upper piezoelectric switch 18u and the forward input of the lower piezoelectric switch 18d, and these logic elements 19a to 19
The displacement state of the lid 2 is detected as follows based on the outputs 20a to 20C of H''L' of the outputs 20a to 20C.

1) When the lid 2 is displaced upward, only the upper piezoelectric switch 18u is turned on, and the logic element 1 is turned on.
Only the output 20a of 9a becomes H", and upward displacement of the lid 2 is detected.

2) When the lid 2 is completely closed, the upper and lower piezoelectric switches 18u and 18d are turned on at the same time, and only the output 20b of the logic element 19b becomes H, which detects that the lid 2 is completely closed. .

3) When the lid 2 is displaced downward, only the lower piezoelectric switch 18d is turned on, only the output 20c of the logic element 19C becomes °H, and the downward displacement of the lid 2 is detected.

The control device W], 7 is constituted by a microcomputer, and the control operation is executed by a software program.Functionally, as shown in FIG. 2 Vehicle speed determination section 22 and negative pressure correction section 23
It is made up of.

The first vehicle speed determination unit 21 determines whether the roof 1
This is the part that determines that the speed has reached such a level that a strong negative pressure is generated and the lid 2 is sucked upwards. In this embodiment, the detected speed from the vehicle speed sensor 11 is 150 km / It is detected whether a predetermined value h has been reached. In addition, the second vehicle speed determination unit 22 determines that when the vehicle is running at a high speed and the lid 2 is sucked upward, the vehicle slows down after performing negative pressure correction on the lid 2 and the roof 2 is sucked upward. This is the part that determines that the speed has reached such a point that no negative pressure is applied to the part and there is no danger of the lid 2 being sucked out.In this example, the speed is 130 km.
/h value.

The negative pressure correction unit 23 is a part that receives the determination outputs from the first vehicle speed determination unit 21 and the second vehicle speed determination unit 22 and gives a drive command to the upper drive circuit 14 or the lower drive circuit 5 of the lid 2. be.

Next, the operation of the sunroof device having the above configuration will be explained.

As shown in the flowchart of FIG. 4, at the start, a flag (Flag) is set to "0" (step S1), and then it is determined whether the lid 2 is fully closed (step S2).

If it is determined in step S2 that the lid 2 is tilted up or slid open or closed, this routine is not entered and the process returns.

However, if the lid 2 is fully closed, then it is determined whether the ignition switch 13 is turned on (step S3).

In the judgment of step S3, if the ignition switch 13 is off and the car is stopped, the driver leaves the car by leaving the lid 2 in the oven and forgetting to close it, and during that time it starts to rain. In order to prevent rain from falling into the interior of the car, it is determined whether the motor 16 is in the fully closed position. If it is not in the fully closed position, the motor 16 is forcibly set to the fully closed position and the lid is closed. 2 is forcibly fully closed (steps S4 and S5).

In the determination in step S3, if the ignition switch 13 is on and the vehicle is running, the first vehicle speed determination unit 21 determines whether or not the vehicle is traveling at high speed.In step S6), the first predetermined Value 150km
/ h or more, the negative pressure correction unit 23 determines whether the lid 2 is fully closed (step S7), and the lid 2 is sucked upward due to strong negative pressure. If it is in an incompletely closed state, the output 20a of the displacement detection sensor 12 becomes 'H' as described above.
A signal is input to this negative pressure correction section 23, and the negative pressure correction section 23
The lower drive circuit 15 drives the motor 16 by the set value to lower the lid 2 to a fully closed state, and at the same time sets the flag to "1°" (step 8).

However, if the -degree negative pressure correction operation does not result in a fully closed state, the lid 2 is again lowered by the set value in the next fully closed state determination step S7.
Repeat this until the lid 2 is fully closed, and even once it is fully closed, the vehicle speed will further increase and the degree of negative pressure will increase, and a situation may occur where the lid 2 is sucked up again. In such a case, steps 82 to s7 are repeated so that the negative pressure correction operation can be performed again.

If the vehicle speed decreases to below the first predetermined value of 150 km/h, the determination in step S6 branches to the No side, and the second vehicle speed determination section 22 determines that the second predetermined value is 130 km/h.
/h and makes a determination (step S9).

In the determination at step S9, if the vehicle speed has not decreased to the second predetermined value of 130 km/h, steps S6 to 89 are iterated until the vehicle speed decreases below that value.

In step S9, the vehicle speed is set to a second predetermined value 130.
If it is less than km/h, the next step is to determine whether the vehicle speed has reached the first predetermined value or not and the negative pressure correction has been performed based on whether the flag is "0" or "1". 510), if the flag is set to 1 because negative pressure correction has been performed, the negative pressure will disappear due to the decrease in vehicle speed, so the lid 2 will fall too far from the fully closed position by the amount that it is forced down. Therefore, the negative pressure correction unit 23 drives the upper drive circuit 14 to start the motor 16, raises the motor 16 by the amount previously lowered, and returns to the fully closed state (Step Sll, 512).

Then, when the lid 2 is fully closed, the flag is set to "0" and the normal running state is returned (step 813).
.

Note that if there is no need to provide hysteresis, it is not necessary to set the first predetermined value and the second predetermined value separately. Also, the first predetermined value is 150 km/h.

The second predetermined value of 130 km/h is not particularly limited, and can be set to an appropriate value by experimentally considering the characteristics of the automobile, the characteristics of the sunroof device, and the like.

In this way, in the embodiment of the invention of claim 1, when the negative pressure is applied to the lid 2 due to the automobile speeding up to a predetermined speed or higher, and the lid 2 is slightly sucked up, the lid 2 is lowered by the set amount to suck up the suction. By correcting the amount and driving the vehicle with the lid 2 kept in a fully closed state even when traveling at high speed, it is possible to prevent the generation of wind noise caused by the lid 2 being in an incompletely closed state.

Note that the deviation detection sensor 12 includes piezoelectric switches 18u, 1
Not limited to 8d, for example, various types such as a combination of an LED and a light sensor, or a mechanical switch can be applied.

FIG. 5 shows an embodiment of the invention of claim 2, which includes a displacement detection sensor 12 that detects upward or downward displacement of the lid 2 with respect to the fully closed state, an ignition switch 13, and an ignition switch 13 that drives the lid 2 upward. an upper drive circuit 14; a lower drive circuit 15 that drives the lid 2 downward; a drive motor 16 that rotates forward and backward to move the lid 2 up or down by these upper and lower drive circuits 14 and 15; A control device jll17 consisting of a fully closed position detection sensor 24 and a microcomputer, which detects the fully closed position, with the rotational position when the motor 2 is in the normal fully closed state as the fully closed position.
It is composed of.

Note that the displacement detection sensor 12 has the same configuration as the first embodiment shown in FIGS. 2 and 3.

Next, the operation of the sunroof device of this embodiment will be explained.

As shown in the flowchart of FIG. 6, when the sunroof is set to the fully closed state, this sunroof device is activated.
First, it is determined whether the sunroof is instructed to be fully closed (step 521). For example, if a tilt up command or a slide open/close command is given, it is determined whether the sunroof is instructed to return and fully closed. If so, the process moves to the next step S22.

In step S22, the roof 1 part becomes large negative pressure because the car is running at high speed, and the lid 2 is sucked up and slightly displaced upward from the fully closed state, or the lid 2 is closed due to other reasons. The outputs 20a to 20e of the displacement detection sensor 12 determine whether the fully closed state has been displaced upward or downward to the incompletely closed state.
Judgment is made by

In this step S22, if a displacement equal to or less than the predetermined value A has occurred, it is then determined whether the displacement is on the upward (up) side (step 823); if it is an upward displacement, the control device]
7 drives the lower drive circuit 15 to rotate the motor 16 in the downward movement direction until the lid 2 is fully closed (step S24, 526), and if the lid 2 is displaced downward, the controller f17 drives the upper drive circuit ]-4 to rotate the motor 16 in the downward movement direction until the lid 2 is fully closed (steps S25, 526).

In the displacement amount determination in step 22, if the displacement amount is less than the predetermined value A, the negative pressure correction operation is not performed. First, it is determined whether the ignition switch 13 is on or not (step 527), and if it is on, it returns as is, and if it is off, the motor 16 is rotated for correction so that the motor 16 comes to a predetermined fully closed position. (Steps 528, 529).

Thus, in the case of this embodiment, when the actual lid 2 is displaced upward or downward by a predetermined value or more with respect to the fully closed state command for the lid 2, the upward or downward drive circuit 1
4.15, the motor 16 is rotated slightly to correct the lid 2 so that it is in the fully closed state, and the lid 2 is corrected so that it is correctly fully closed in response to a fully closed command at any time regardless of the vehicle speed. This makes it possible to automatically compensate for the effects of negative pressure.

Although the set value A of the amount of displacement of the lid 2 is not particularly limited, in this embodiment, when the displacement detection sensor 12 detects an upward displacement or a downward displacement, a displacement equal to or less than a predetermined value A occurs. I take it as a thing. Therefore, the upper and lower piezoelectric switches 18u.

When installing 18d, the displacement setting value can be adjusted by adjusting the position up and down.

[Effects of the Invention] According to the invention as claimed in claim 1, the negative pressure correction means corrects the phenomenon that the sunroof becomes incompletely closed due to the suction caused by the negative pressure generated during high-speed driving. Also, in the case of a fully closed command, the lid is always kept in a fully closed state, so there is no problem of the lid being sucked up by negative pressure when driving at high speeds, producing loud wind noise and worsening ride comfort. Ride comfort at high speeds can be improved.

Further, according to the invention of claim 2, if the actual position of the lid is displaced upward or downward from the original fully closed position in response to the lid fully closed command, the amount of displacement is automatically corrected. Therefore, the lid is kept completely closed regardless of the vehicle speed, and the lid may be slightly displaced upward due to the negative pressure that occurs especially when driving at high speeds. By avoiding wind noise and minimizing wind noise, ride comfort during high-speed driving can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a cross-sectional view showing how the displacement detection sensor of the above embodiment is installed, and Fig. 3 shows the displacement detection sensor of the above displacement detection sensor. 4 is a flowchart explaining the operation of the above embodiment, FIG. 5 is a block diagram of another embodiment of the present invention, FIG. 6 is a flowchart explaining the operation of the above embodiment, and FIG. 8(a) to 8(d) are sectional views showing the opening and closing operations of the conventional example, FIGS. 8(a) and 8(b) are sectional views showing the operation of the conventional example, and FIG. 8(c) is a perspective view thereof. DESCRIPTION OF SYMBOLS 1... Roof 2... Lid 3... Weather strip 11... Vehicle speed sensor 12... Displacement detection sensor 13... Ignition switch 14... Upper drive circuit 15... Lower drive circuit 1
6...Motor 17...Control device 21-2
．． First vehicle speed determination section 22...Second vehicle speed determination section 23...
・Negative pressure correction unit 24... Fully closed position detection sensor

Claims (2)

[Claims] (1) A sunroof driving means for tilting up and tilting down the sunroof from a fully closed state, a vehicle speed sensor for detecting the vehicle speed of the automobile, and a sensor for detecting an incompletely closed state of the sunroof that is slightly upwardly shifted from the fully closed state. fully closed state detection means; driving the sunroof drive means in a tilt-down direction when the vehicle speed sensor detects a vehicle speed equal to or higher than a predetermined value and the incompletely closed state detection means detects the incompletely closed state of the sunroof; sunroof negative pressure correction means for lowering the sunroof to a fully closed state. (2) Sunroof driving means for tilting up and tilting down the sunroof from the fully closed state, sunroof fully closed state detection means for detecting the fully closed state of the sunroof, and detecting the amount of vertical displacement of the sunroof with respect to the fully closed state. and sunroof negative pressure correction means for correcting the position of the sunroof by the amount of displacement when the displacement detection sensor detects an amount of upward or downward displacement of the sunroof to move it to a fully closed position. A sunroof device consisting of