JP3480093B2 - Opening / closing body control device for vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle opening / closing body control device for preventing pinching by an opening / closing body.

[0002]

2. Description of the Related Art Recently, many vehicles have an opening / closing body driven by a motor, such as a power window or a sliding sunroof. In the case where such an opening / closing body is provided, in order to prevent the opening / closing body from being pinched, when a load larger than a predetermined amount is applied to the opening / closing body during the closing operation of the opening / closing body, as disclosed in Japanese Patent Laid-Open No. 5-95694. In addition, it is proposed that the opening / closing body is opened to perform automatic reversal to eliminate pinching by the opening / closing body. Further, in the above-mentioned publication, the sandwiching of the opening / closing body is performed by a motor for driving the opening / closing body.
It has been proposed to perform detection using the drive current of the inverter, that is, the ripple current (ripple pulse).

[0003]

SUMMARY OF THE INVENTION In the above-mentioned automatic reversing of the opening / closing body for preventing the entrapment, the entrapment is erroneously detected for some reason, that is, the opening / closing body is subjected to a load larger than a predetermined value. You may be mistakenly determined that you did. In such a case, it becomes impossible to fully close the opening / closing body due to the automatic reversal control,
In this respect, some measure will be desired.

[0004]

To achieve the above object, the present invention (the invention according to claim 1) has the following configuration. That is, when a load of a predetermined amount or more is applied to the opening / closing body during the closing operation of the opening / closing body driven by the motor, the vehicle opening / closing body control is performed so as to automatically reverse the opening / closing body in the opening direction. In the device, the vehicle condition detecting means for detecting that the vehicle is in a predetermined condition, and the vehicle condition detecting means have, as the predetermined conditions, a brake operation, a clutch operation, and a vehicle speed. That is, when at least one of the gear position of the transmission and the traveling gear position is detected to detect that the driver of the vehicle is present in the driver's seat, the prohibition means for prohibiting the automatic reversal. And is provided.

In order to achieve the above object, the present invention (the invention according to claim 2) has the following configuration. That is, when a load of a predetermined amount or more is applied to the opening / closing body during the closing operation of the opening / closing body driven by the motor, the vehicle opening / closing body control is performed so as to automatically reverse the opening / closing body in the opening direction. In the device, the vehicle situation detecting means for detecting that the vehicle is in a predetermined situation, and the vehicle situation detecting means, as a predetermined situation, that the drive voltage of the opening / closing body has dropped to a predetermined voltage or less, By detecting at least one of traveling at a predetermined vehicle speed or more, when it is detected that the drive resistance of the opening / closing body is increasing, a prohibiting unit that prohibits the automatic reversal, Is provided.

[0006]

According to the invention described in claim 1, the automatic reversing of the opening / closing body is used to prevent the vehicle from being caught, and the vehicle in which the automatic reversing of the opening / closing body is prohibited is in a predetermined state. Then, the opening / closing body is closed to securely close the opening / closing body.

Further, as a predetermined situation, it is possible to fully close the opening / closing body by utilizing the fact that the person who drives the vehicle is present in the driver's seat. In this case, the fact that the driver of the vehicle is present in the driver's seat can artificially cope with the trapping at this time, and even if the automatic reversal is prohibited, no problem occurs.

Moreover, at least one of the following conditions: the vehicle condition detecting means is operated by the brake, the clutch is operated, the vehicle speed is present, and the gear position of the transmission is at the traveling gear position. From the above, it is possible to easily detect that the person who drives the vehicle is present in the driver's seat.

According to the second aspect of the present invention, the automatic reversal of the opening / closing body is used to prevent the vehicle from being caught, and the automatic reversing of the opening / closing body is prohibited in a predetermined situation. By closing the opening / closing body, the opening / closing body can be surely fully closed.

Further, since the predetermined condition is a condition in which the driving resistance of the opening / closing body is increasing, it is considered that a load larger than a predetermined value is applied to the opening / closing body due to the increase in the driving resistance of the opening / closing body. It is possible to prevent the accidental detection, prohibit the automatic reversal caused by the erroneous detection, and securely close the opening / closing body.

Further, the vehicle condition detection means detects at least one of that the drive voltage of the opening / closing body is lower than a predetermined voltage and that the vehicle is traveling at a predetermined vehicle speed or more, Since it is detected that the drive resistance of the opening / closing body is increasing, it is possible to deal with a specific matter in which it is erroneously determined that a load larger than a predetermined value is applied to the opening / closing body.

[0012]

[0013]

[0014]

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a view of a door 1 for a driver's seat with an interior material and an inner panel removed, viewed from the passenger compartment side. A window as an opening / closing body, that is, a power window is indicated by reference numeral 2. The power window 2 is guided in the vertical direction by a pair of front and rear guide members 3 and 4 extending substantially in the vertical direction. The upward movement is a closing operation and the descending movement is an opening operation. Then, the automatic reversal of the power window 2 is a downward movement.

The door 1 is equipped with a drive mechanism K including a motor 5 and a speed reduction mechanism 6. Reduction mechanism 6 and power
The window 2 is connected via a wire 7, whereby the power window 2 is raised when the motor 5 is normally rotated, and the power window 2 is lowered when the motor 5 is reversed.

FIG. 2 shows a control system of the power window 2. In FIG. 2, U is a control unit configured by using a microcomputer, and the control unit U includes an opening / closing switch 11, a control circuit 12,
The drive circuit 13 and the ripple current detection circuit 14 including the shunt resistor 14a are provided.

The switch 11 includes opening / closing switches 11a to 11d for individually instructing opening / closing of the power windows 2 at front, rear, left and right positions. Then, the control unit U makes the switch 11 positioned on the upper surface of the armrest of the door 1 (operable from the upper surface side),
It is equipped in the armrest. In FIG. 2, the motor 5 shows only a part of the four motors in the front, rear, left and right, and the other motors are not shown.

The motor 5 is connected to the battery via the drive circuit 13, the ripple current detection circuit 14, and the relay 16. The control circuit 12 includes an ignition switch 1
The control circuit 12 turns on the relay 16 only when the ON / OFF signal from 5 is input and the ignition switch 15 is ON, and until a predetermined time (for example, 20 seconds) elapses from the ignition switch OFF ( Battery power is constantly supplied to the control circuit 12).

When any one of the switches 11a to 11d is operated (open command, close command) on condition that the relay 16 is turned on, the operation signal is the control signal.
In response to the input signal, the control circuit 12 outputs a predetermined control signal to the drive circuit 13 to drive the motor 5 corresponding to the operated switch. Then, by stopping the switch operation, the driving of the motor 5 is stopped at that time.

From the ripple current detection circuit 14 to the control circuit 1
A ripple pulse is output to the No. 2. As is well known, the ripple pulse is a pulse in which a driving current is generated during the driving of the motor 5, and the number of pulses required to fully close the power window 2 is a predetermined number of pulses. The predetermined number of pulses is 1600. In other words, the control circuit 12 can know the rotational position of the motor 5, that is, the open / close position of the power window 2 by monitoring the number of ripple pulses.

When the control circuit 12 detects that the power window 2 is closed and fully closed by operating any of the switches 11a to 11d by utilizing the ripple pulse (number), Alternatively, when it is detected that the motor 5 has been opened to the full open, the motor 5 is de-energized to prevent the motor 5 from being overloaded. In addition, the control circuit 12 detects that the load acting on the motor 5 has become large, that is, pinching, from the state of the ripple pulse generation, and at this time, the power window 2 is opened to the fully open position, that is, the operation is completed. Automatically flips. More specifically, when the load on the power window 2, that is, the motor 5 becomes large, the ripple pulse becomes larger in both amplitude and cycle than under normal load. Therefore, at least one of this amplitude and cycle is larger. When the value exceeds a predetermined value, the above-mentioned automatic reversal is performed because the pinch occurs.

The amplitude and the cycle of the above-mentioned ripple pulse are set when the power window is about to be driven in the closing direction from the fully closed state and when it is about to be driven in the opening direction from the fully opened state. Also becomes larger than a predetermined value, the motor 5 can be operated by using at least one of the amplitude and the period of the ripple pulse instead of or in addition to the full-closed detection or the full-opened detection using the number of ripple pulses. It is also possible to stop energization of the motor 5 in order to prevent overload on the motor.

The control of the trapping prevention by the control circuit 12 is performed when the power window 2 is sufficiently closed so that the trapping can no longer be considered, and more specifically, the power window 2 is in the fully closed state and the fully closed state. When the state is a state in which the state is opened by a predetermined distance (4 mm in the embodiment) from the state, the drive up to the fully closed state is permitted without performing the automatic reversal. That is, when the power window 2 is in the open state within the predetermined distance from the fully closed state, the zone is a zone in which the automatic reversal is prohibited, and conversely, the power is more in the opening direction than the predetermined distance. When the window 2 is in the position, the automatic reversal permission zone in which the automatic reversal may be performed.

In order to prohibit the automatic inversion, the control circuit 12
In addition to the signals from the various sensors or the switches S1 to S5 being input, the operating state of the ignition switch 15 is input. The switch S1 is a brake switch that is turned on when the brake pedal is depressed. The switch S2 is a clutch switch that is turned on when the clutch is depressed (in the embodiment, the manual transmission has a clutch). The switch S3 is a door switch that is turned on when the door 1 is opened, and is provided only on the driver's seat door 1 in the embodiment.

The sensor S4 is a vehicle speed sensor for detecting the presence of a vehicle speed. In the embodiment, the vehicle speed is equal to or higher than a predetermined vehicle speed at which the vehicle speed becomes low (for example, 1
When the vehicle speed is 0 km / h or more), it is determined that there is a vehicle speed. The sensor S5 detects the gear position of the transmission, and detects that the gear position for traveling (for example, first speed, second speed, etc.) is selected. When the transmission is an automatic transmission, it is detected that the vehicle is in the traveling gear position when it is in a traveling range other than the P range and the N range.

Next, with reference to the flow chart of FIG. 3, among the control contents of the control circuit 12, the automatic reversal and the control of prohibiting the automatic reversal will be focused and described. In the following description, Q indicates a step. First, in Q1, each sensor or the like or ripple pulse signal is input, and then in Q2, it is determined whether or not the zone is a zone that permits the above-described automatic inversion. If YES in Q2, it is determined in Q3 whether or not the door 1 is open. If NO in Q3, in Q4 whether or not the ignition switch 14 is ON. To be determined.

When the determination in Q4 is YES, Q5 to Q8
If all the conditions that the brake operation is not performed, the clutch is not operated, the vehicle speed does not exist, and the traveling gear position is not selected, it is judged in Q9 that It is determined whether or not the switch 5 is locked. This determination in Q9 is whether or not the power window 2 is pinched.
This determination is made by observing the state of the ripple pulse as described above. If YES in the determination in Q9, it means that pinching occurs, and therefore in Q10, the power window 2 is automatically inverted.

If NO in the determination in Q9, it means that the entrapment has not occurred, and therefore in Q11, the fully closed operation of the power window 2 is permitted. In addition, N is determined by the determination of Q2.
Even when it is O, it means that no pinching occurs, so the process proceeds to Q11. Further, when the door is open (YES in the determination of Q3) and when the determinations of Q5 to Q8 are YES, the process proceeds to Q11 and the power window 2 is fully closed. If NO in the above Q4, Q5
The process proceeds to Q9 without passing through Q8, and either automatic reversal or full closing permission control is performed.

In the embodiment shown in FIG. 3, it is detected that at least a person who is knowledgeable for driving exists near the vehicle (Q3 to Q).
8), or the one for detecting that the vehicle is running (Q4 to Q8), the ON state detection of the ignition switch in Q4 detects the running state of the vehicle more reliably. However, if there is any one of Q5 to Q8, the determination of Q4 can be eliminated. Of course, in a vehicle of the type in which the opening / closing drive of the power window 2 is permitted only when the ignition switch 15 is ON, the determination of Q4 is unnecessary. It should be noted that the detection of the vehicle in the traveling state in Q4 to Q8 is merely an example, and it is possible to detect that the vehicle is in the traveling state by at least one of the determinations in Q4 to Q8 or any combination. Or all of these conditions may be satisfied (when all the conditions are satisfied, if automatic determination is prohibited when all the determinations of Q4 to Q8 are YES within a predetermined time, Good).

FIG. 4 shows another embodiment of the present invention and corresponds to FIG. Of this FIG. 4, Q21,
Since Q22 corresponds to Q1 and Q2 in FIG. 3 and Q26 to Q28 correspond to Q9 to Q11 in FIG. 3, duplicate description thereof will be omitted. In FIG. 4, the condition for prohibiting the automatic reversal is a case where the drive resistance of the power window 2 is substantially increased (erroneous determination of entrapment is prevented). That is, when the drive voltage of the motor 5 has dropped below a predetermined voltage, when the power window 2 is frozen, and when the vehicle speed is high (for example, 70 km / h or more, The driving resistance of the power window 2 increases due to the sucking action due to the airflow flowing along it).

When the drive voltage drops, freezes, or at a high vehicle speed, the amplitude and the cycle of the ripple pulse are substantially increased even if no entrapment occurs, and it is erroneously determined to be an entrapment. At this time, automatic inversion is prohibited. It should be noted that a separate detection sensor may be provided for the drive voltage, and the determination of freezing may be performed by using the outside air temperature sensor (when the outside air temperature is a low temperature equal to or lower than a predetermined temperature, it is determined as freezing). In addition, like ABS control and traction control,
If a separate control device for detecting (estimating) the road surface μ is provided, the detected road surface μ is input to the control circuit 12 so that automatic reversal is prohibited when the road surface μ is in a low μ state corresponding to a frozen state. Good.

The detection of the driving resistance increasing state in Q23 to Q25 is merely an example, and the driving resistance increasing can be observed by using other parameters, and at least the determination of Q23 to Q25 is made. The drive resistance increasing state may be detected by only one or an arbitrary combination.

Although the embodiments have been described above, the present invention is not limited to this, and includes, for example, the following cases.

(1) A separate dedicated switch for prohibiting the automatic reversal may be provided, and in this case, the prohibition switch may be provided near the opening / closing switch 11 on the driver's seat side.
When both switches are provided close to each other, the automatic reversal prohibition can be performed only when the prohibition switch and the opening / closing switch 11 are simultaneously operated. In this case, the prohibition switch and the opening / closing switch 11 are close to each other. However, it is preferable to set the mutual positional relationship in such a manner that simultaneous operation is difficult, such as by providing them on different surfaces of the vehicle body. Further, the prohibiting switch may be installed at a position apart from the opening / closing switch 11 so that it is difficult to operate the opening / closing switch 11 at the same time. That is, the prohibiting switch can be arranged at a position that is normally hard to touch, for example, below the dashboard. In this case, the automatic reversal is prohibited at least within a predetermined time after the prohibiting switch is turned on. You can set it to. (2) The opening / closing body is not limited to the power window but may be a slide type sun roof. (3) In addition to ripple pulse detection, the operating state of the motor 5 for detecting that a load larger than a predetermined value is applied to the opening / closing body is detected by an encoder 5 or the like.
It is also possible to detect the rotational position of. That is, when a large load is applied to the opening / closing body,
Since the cycle of the output pulse of the antenna becomes large, it is possible to know whether or not a large load acts on the opening / closing body by monitoring this cycle. (4) The drive of the power window 2 by the motor 5 can be appropriately selected by using a wire mechanism or a rack mechanism. In order to cope with the expansion and contraction of the wire 7 and the change in backlash depending on the temperature, the number of ripple pulses or encoder for detecting the opening / closing position of the power window 2 and setting the automatic reversal permission zone is selected according to the temperature. It is also possible to correct the detected value. (5) Both of the control of FIGS. 3 and 4 (determination of Q3 to Q8 and Q23 to Q25) may be performed together. (6) The automatic reversal control and the automatic reversal prohibition control may be applied only to the rear seat power window where pinching is particularly problematic, but including the front seat power window,
Alternatively, it can be applied to all the opening / closing bodies including the sun roof. (7) The motor 5 is not limited to an electric type, but may be a hydraulic type. In this case, the operating state of the motor 5 for detecting entrapment can be the drive hydraulic pressure (change in hydraulic pressure).

[Brief description of drawings]

FIG. 1 is a side view showing an example of a door having a power window, as viewed from the passenger compartment side with an interior material and an inner panel removed.

FIG. 2 is a diagram showing a power-wind control system.

FIG. 3 is a flow chart showing a control example of the present invention.

FIG. 4 is a flowchart showing another control example of the present invention.

[Explanation of symbols]

1: Door 2: Power window 5: Motor 11: Open / close switch 12: Control circuit 13: Drive circuit 14: Ripple current detection circuit 15: Ignition switch S1: Break switch S2: Clutch switch S3: Door switch S4: Vehicle speed sensor S5: Gear position sensor U: Control unit

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05F 15/00 B60J 1/00

Claims (2)

(57) [Claims] 1. A vehicle for automatic reversal for driving the opening / closing body in the opening direction when a load larger than a predetermined value is applied to the opening / closing body during the closing operation of the opening / closing body driven by a motor. In the opening / closing body control device, the vehicle condition detecting means for detecting that the vehicle is in a predetermined condition, and the vehicle condition detecting means for controlling the brake operation as the predetermined condition.
Made, clutch operated, vehicle speed
Is present and the gear position of the transmission is in the drive gear position.
A vehicle by detecting at least one of
When it is detected that the driver is in the driver's seat,
An opening / closing body control device for a vehicle, comprising: a prohibiting unit that prohibits the automatic reversal. 2. A closing operation of an opening / closing body driven by a motor.
When a load larger than a predetermined value is applied to the opening / closing body,
Vehicle with automatic reversal that drives the body in the opening direction
State detection means for detecting that the vehicle is in a predetermined state in a vehicle opening / closing body control device
And the vehicle condition detection means determines that the opening / closing body
Drive voltage has dropped below a certain voltage,
Is at least one of the following:
The drive resistance of the opening / closing body is increased by detecting
When it is detected that the
An opening / closing body control device for a vehicle , comprising: a prohibiting means for prohibiting .