JP2007100483A - Control device for opening/closing of window - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control device for opening/closing of a window which can prevent misdetection of catching caused by the percussion upon closing of a door, and can assure safety. <P>SOLUTION: In the control device for opening/closing of the window, a variation of the load of a motor for opening and closing the window and a predetermined threshold value are compared, whether or not a foreign substance is caught in the window is determined based on the result of the comparison, and the motor is controlled to open the window when the catching occurs. When an ignition switch is off and the door is open, it is determined that there is a good possibility of a passenger getting out, and the threshold value for determination of the catching is raised. When the ignition switch is on or the door is closed, it is determined that there is little possibility of a passenger getting out, and the threshold value for determination of the catching is kept unchanged. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a window opening / closing control device for opening / closing a window of a vehicle.

  BACKGROUND ART A window opening / closing control device (hereinafter referred to as “power window device”) used in an automobile is a device that opens and closes a window by moving a motor forward or backward by operating a switch to raise and lower a window glass of a door. FIG. 11 is a block diagram showing an electrical configuration of a general power window device. 1 is a control unit composed of a CPU for controlling the opening and closing operation of the window, 2 is a motor drive circuit for driving the motor 3, 4 is a rotary encoder that outputs a pulse synchronized with the rotation of the motor 3, and 5 is output from the rotary encoder 4. A pulse detection circuit for detecting a pulse, 6 a memory composed of a ROM, a RAM and the like, and 7 an operation switch for operating the opening and closing of the window.

  When the operation switch 7 is operated, a window opening / closing command is given to the control unit 1, and the motor 3 is rotated forward or backward by the motor drive circuit 2. By the rotation of the motor 3, the window opening / closing mechanism interlocked with the motor 3 is operated to open / close the window. The pulse detection circuit 5 detects a pulse output from the rotary encoder 4, and the control unit 1 calculates the opening / closing amount of the window and the motor speed based on the detection result, and rotates the motor 3 via the motor drive circuit 2. Control.

  FIG. 12 is a schematic configuration diagram illustrating an example of the operation switch 7. The operation switch 7 includes an operation knob 71 that can rotate about the axis Q in the ab direction, a rod 72 provided integrally with the operation knob 71, and a known slide switch 73. 74 is an actuator of the slide switch 73, and 20 is a cover of the switch unit in which the operation switch 7 is incorporated. The lower end of the rod 72 is engaged with the actuator 74 of the slide switch 73. When the operation knob 71 rotates in the ab direction, the actuator 74 moves in the cd direction via the rod 72, and slides according to the moving position. A contact (not shown) of the switch 73 is switched.

  The operation knob 71 can be switched to each position of auto-close AC, manual close MC, neutral N, manual open MO, and auto open AO. FIG. 12 shows a state where the operation knob 71 is in the neutral N position. When the operation knob 71 is rotated by a certain amount in the direction a from this position to the manual closing MC position, a manual closing operation for closing the window is performed manually, and the operation knob 71 is further rotated in the direction a from this position. When the auto-close AC position is set, the auto-close operation is performed to close the window by the auto-operation. Further, when the operation knob 71 is rotated a certain amount in the b direction from the neutral N position to the manual opening MO position, a manual opening operation is performed in which the window is opened manually, and the operation knob is further moved in the b direction from this position. When 71 is rotated to the auto-open AO position, an auto-open operation is performed in which the window is opened by auto operation. The operation knob 71 is provided with a spring (not shown), and when the hand is released from the rotated operation knob 71, the operation knob 71 returns to the neutral N position by the force of the spring.

  In the case of manual operation, the window is closed or opened only while the operation knob 71 is held by hand at the position of manual closing MC or manual opening MO. When returning to the N position, the window closing or opening operation stops. On the other hand, in the case of the automatic operation, once the operation knob 71 is rotated to the position of auto-close AC or auto-open AO, after that, the hand is released from the operation knob 71 and the knob returns to the neutral N position. The window closing operation or opening operation is continuously performed.

  FIG. 13 is a view showing an example of a window opening / closing mechanism provided in each window of the vehicle. Reference numeral 100 denotes an automobile window, 101 denotes a window glass for opening and closing the window 100, and 102 denotes a window opening / closing mechanism. The window glass 101 moves up and down by the operation of the window opening / closing mechanism 102, the window 100 is closed when the window glass 101 is raised, and the window 100 is opened when the window glass 101 is lowered. In the window opening / closing mechanism 102, 103 is a support member attached to the lower end of the window glass 101. 104 is a first arm whose one end is engaged with the support member 103, and the other end is rotatably supported by the bracket 106. 105 is one end engaged with the support member 103, and the other end is engaged with the guide member 107. Second arm. The 1st arm 104 and the 2nd arm 105 are connected via the axis | shaft in each intermediate part. 3 is the motor described above, and 4 is the rotary encoder described above. The rotary encoder 4 is connected to the rotating shaft of the motor 3 and outputs a number of pulses proportional to the amount of rotation of the motor 3. The rotational speed of the motor 3 can be detected by counting the pulses output from the rotary encoder 4 within a predetermined time. Further, the amount of rotation of the motor 3 (the amount of movement of the window glass 101) can be calculated from the output of the rotary encoder 4.

  Reference numeral 109 denotes a pinion that is rotationally driven by the motor 3, and 110 denotes a fan-shaped gear that meshes with the pinion 109 and rotates. The gear 110 is fixed to the first arm 104. The motor 3 can rotate in the forward and reverse directions, and rotates the pinion 109 and the gear 110 by rotating in the forward and reverse directions to rotate the first arm 104 in the forward and reverse directions. Following this, the other end of the second arm 105 slides laterally along the groove of the guide member 107, and the support member 103 moves up and down to raise and lower the window glass 101, thereby opening and closing the window 100. .

  In the power window device as described above, when the operation knob 71 is at the position of the automatic closing AC in FIG. 12 and the automatic closing operation is performed, a function of detecting the object pinching is provided. That is, as shown in FIG. 14, when the object Z is sandwiched in the gap of the window glass 101 while the window 100 is closed, this is detected and the closing operation of the window 100 is switched to the opening operation. . Since the window 100 is automatically closed during the automatic closing operation, the pinching detection function works to prevent the human body from being harmed when a hand or neck is accidentally pinched. Operation is prohibited. In detecting pinching, the controller 1 reads the rotational speed of the motor 3 that is the output of the pulse detection circuit 5 as needed, compares the current rotational speed with the previous rotational speed, and based on the comparison result, Determine presence or absence. When the object Z is caught in the window 100, the load on the motor 3 increases and the rotational speed decreases, so that the speed fluctuation amount increases, and when the speed fluctuation quantity exceeds a predetermined threshold, the object Z Is determined to have been sandwiched. The threshold value is stored in the memory 6 in advance.

  By the way, the fluctuation | variation of the rotational speed of the motor 3 generate | occur | produces not only by foreign object pinching but by the vibration when a door is closed. When the rotational speed fluctuates due to such vibrations, it may happen that the foreign object is erroneously determined to be opened and the window is opened even though the foreign object is not interposed. As a countermeasure against this, it is conceivable to set a high threshold value for determining pinching. However, if the threshold value is simply increased, the load at the time when pinching is detected (hereinafter referred to as “pinching load”) is set to the threshold value. Since it increases as much as it is raised, there is a problem that safety is threatened when hands or arms are caught.

  Therefore, as a solution to this problem, in Patent Document 1 below, by increasing the threshold value for a certain time after detecting that the door is closed, the rotation speed of the motor fluctuates due to vibration during the door closing operation. Even so, the amount of speed fluctuation does not exceed the threshold value to prevent misjudgment, and after a certain period of time has elapsed since the door closed, the threshold value is restored to perform normal pinching detection. Power window devices have been proposed. Patent Document 2 discloses a similar technique.

  Further, Patent Document 3 compares the load applied to the motor with the first threshold when the door is open, and compares the load applied to the motor with the second threshold when the door is closed. Based on the results, a power window device is shown that prevents misdetection of pinching not only when the door is closed but also when the door is opened by judging the pinching state during closing of the window. ing. In Patent Document 4, when the driver detects that the driver is in the driver's seat based on the brake operation, clutch operation, vehicle speed, gear position of the transmission, etc., the window is automatically reversed in the opening direction. A power window device is shown in which the operation to be performed is prohibited. Patent Document 5 describes a keyless entry system that locks a door in response to a door lock signal transmitted from a remote controller and closes a window by operating a power window device.

Japanese Patent No. 3156553 JP-A-9-125815 Japanese Patent No. 3206327 Japanese Patent No. 3480093 JP 7-54525 A

In a vehicle equipped with a power window device that detects the inclusion of a foreign object and reverses the window in the opening direction, the occupant closes the window glass by operating the power window device switch or keyless entry system remote control when getting off the vehicle. However, when the door is closed, the pinch detection function is activated by the impact of the door, and the window glass may be reversed and opened. If the occupant leaves the vehicle without noticing this false reversal, problems such as theft occur. Thus, as described in Patent Documents 1 and 2, by raising the threshold value when the door is closed, erroneous reversal can be prevented, but in this case, the following problem occurs.
(1) Since the signal line for detecting the door closing needs to be taken into a device (ECU: Electronic Control Unit) for detecting pinching, the number of harnesses is increased, and an input interface of the ECU is required. The cost is high.
(2) In order to avoid this, when a door closing detection signal is wirelessly transmitted to the ECU, the detection signal may be delayed depending on the communication speed or traffic volume. If the detection signal is delayed, the timing for raising the threshold is delayed. Thus, there is a high possibility that the window glass is erroneously reversed by the impact of closing the door.

  On the other hand, as disclosed in Patent Document 3, in order to prevent erroneous detection of pinching when the door is opened, if the threshold value is unconditionally raised when the door is opened, for example, an occupant in the vehicle has an arm on the window during the closing operation. If the sandwiching load does not reach a certain value, the window glass does not reversely move, so that the arm is tightened and the risk increases. In addition, as in Patent Document 4, when the occupant is in the vehicle, the window glass reversal operation is uniformly prohibited, and there is a problem that the risk of being caught is further increased.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a window opening / closing control device that can prevent erroneous detection of pinching due to an impact when a door is closed and that can ensure safety.

  In the present invention, load detection means for detecting a load of a motor for opening and closing a vehicle window, comparison means for comparing a change amount of the load detected by the load detection means with a predetermined threshold, and the comparison means Based on the comparison result, determination means for determining whether or not a foreign object has been caught in the window, and control means for controlling the motor to open the window when the determination means determines that a foreign object has been caught. The window opening / closing control apparatus has a detection means for detecting whether or not an occupant in the vehicle can get off. When the detecting means detects that there is no possibility of getting off, the comparing means compares the amount of change of the load detected by the load detecting means with the first threshold value, and the detecting means has a possibility of getting off. Is detected, the load change amount detected by the load detecting means is compared with a second threshold different from the first threshold. Further, the determination means determines whether or not foreign matter is caught based on the comparison result by the comparison means while the window is closed by the motor.

  In the present invention, when it is detected that there is no possibility of passengers getting off, the first threshold is used as a threshold for comparing the amount of change in motor load, and it is detected that there is a possibility of passengers getting off. Only when this is done, the second threshold value is used instead of the first threshold value. Therefore, for example, by setting the second threshold value to be larger than the first threshold value, when an occupant who has no possibility of getting off is in the vehicle, the threshold value remains small. Even if an arm or the like is accidentally pinched, the original pinching detection function works to open the window, and the danger of pinching can be avoided. On the other hand, if there is a possibility that an occupant in the vehicle will get off, it is assumed that the door will eventually be closed, so by raising the threshold value, erroneous detection of pinching due to the impact when the door is closed will open the window Can be prevented in advance. Even if the threshold value is increased, the passenger gets off, so there is little risk of being caught.

  As detection means for detecting the presence or absence of a passenger's possibility of getting off, first detection means for detecting the open / closed state of a vehicle door and second detection means for detecting an on / off state of an ignition switch may be used. it can. In this case, when the first detection means detects the open state of the door and the second detection means detects the ignition switch being turned off, it detects the possibility of the passenger getting out of the vehicle. As the first detection means, for example, a courtesy lamp switch provided in the vehicle can be used, but a dedicated detection switch may be provided. The same applies to the following examples.

  As another example of the detection means, a first detection means for detecting the open / closed state of the door of the vehicle and a second detection means for detecting the presence or absence of a door lock can be used. In this case, when the first detection means detects the open state of the door and the second detection means detects that the door is not locked, the possibility of the passenger getting off is detected.

  As another example of the detecting means, a first detecting means for detecting an open / closed state of a vehicle door and a second detecting means for detecting a power supply voltage can be used. In this case, when the first detection means detects the open state of the door and the second detection means detects that the power supply voltage is lower than a predetermined value, the possibility of the passenger getting off is detected.

  As another example of the detecting means, a first detecting means for detecting the open / closed state of the door of the vehicle and a second detecting means for detecting the presence or absence of an occupant can be used. In this case, when the first detection means detects the open state of the door and the second detection means detects the absence of an occupant, the possibility of the passenger getting off is detected.

  Furthermore, as another example of the detection means, a first detection means for detecting the open / closed state of the door of the vehicle and a second detection means for detecting the presence / absence of a key can be used. In this case, when the first detection means detects the open state of the door and the second detection means does not detect the key, the possibility of the passenger getting out is detected.

  When the first detection means and the second detection means as described above are used, it is possible to detect the possibility of the passenger getting out of the vehicle using an existing device provided in the vehicle. In addition, since the threshold value can be changed before the door is closed by detecting the open state of the door, the detection signal is delayed such as when the threshold value is changed by the door closing detection signal when the door is closed. There is no delay in the timing of raising the threshold due to, and malfunctions when the door is closed can be prevented.

  According to the present invention, only when it is detected that there is a possibility that an occupant will get off, the threshold is changed and the pinching is determined, so that an erroneous detection of pinching occurs due to an impact when the door is closed. In addition to being able to prevent this, if there is no possibility that the occupant will get out of the vehicle, it is determined whether the vehicle is caught without changing the threshold value, so that the danger caused by the vehicle can be avoided and safety can be improved.

  Next, an embodiment of the present invention will be described with reference to the drawings. In the following, FIGS. 12 to 14 described in the background art section are cited as a part of the embodiment of the present invention.

  FIG. 1 is a block diagram showing an electrical configuration of a power window device according to an embodiment of the present invention. In FIG. 1, the same parts as those in FIG. 1 is a control unit composed of a CPU for controlling the opening and closing operation of the window, 2 is a motor drive circuit for driving the motor 3, 4 is a rotary encoder that outputs a pulse synchronized with the rotation of the motor 3, and 5 is output from the rotary encoder 4. A pulse detection circuit for detecting a pulse to be detected, 6 is a memory composed of a ROM, a RAM and the like, and 7 is an operation switch (FIG. 12) for operating the opening and closing of the window. The memory 6 stores a first threshold value and a second threshold value which will be described later.

  Reference numeral 8 denotes a door close detection switch for detecting that the vehicle door is closed. For example, a courtesy lamp switch for controlling lighting of a lamp in the vehicle in conjunction with opening and closing of the door can be used. 9 is an ignition switch for starting the engine. The ignition switch is turned on (ON state) when the car key is inserted into the key insertion port and turned to the engine starting position, and is otherwise turned off (ON state). OFF state). 10 is a door lock detection sensor for detecting the presence or absence of a door lock, and 11 is a power supply voltage detection circuit for detecting a power supply voltage. For example, the door lock detection sensor 10 detects that the door is locked based on a signal when the door lock button of the driver's seat is operated. Reference numeral 12 denotes an occupant detection sensor, which includes, for example, a seating sensor that detects that the occupant is sitting on the seat. This seating sensor is originally used to adjust the inflation speed of the airbag according to the presence or absence of an occupant. Reference numeral 13 denotes a key detection sensor for detecting the presence or absence of a car key, and detects this when, for example, a key is inserted into a key insertion slot.

  In FIG. 1, when the operation switch 7 is operated, a window opening / closing command is given to the control unit 1, and the motor 3 is rotated forward or backward by the motor drive circuit 2. By the rotation of the motor 3, the window opening / closing mechanism 102 (FIGS. 13 and 14) interlocked with the motor 3 is operated to open / close the window 100. The pulse detection circuit 5 detects the pulse output from the rotary encoder 4, and the control unit 1 calculates the opening / closing amount of the window 100 and the rotation speed of the motor 3 based on the detection result, and the motor via the motor drive circuit 2. 3 is controlled. The load of the motor 3 can be obtained from the rotational speed.

  In the above configuration, the rotary encoder 4 and the pulse detection circuit 5 are examples of load detection means in the present invention, and the control unit 1 is an example of comparison means, determination means, and control means in the present invention. The detection switch 8 and the control unit 1 are an example of the first detection means in the present invention. An ignition switch 9, a door lock detection sensor 10, a power supply voltage detection circuit 11, an occupant detection sensor 12, a key detection sensor 13, and a control unit 1 is an example of the second detection means in the present invention.

  FIG. 2 is a flowchart showing the basic operation of the power window device according to the embodiment of the present invention. “SW” in the drawing represents “operation switch 7” (the same applies to the following flowcharts). If the operation switch 7 is in the manual closing MC position in step S1, the manual closing operation is performed (step S2). If the operation switch 7 is in the auto closing AC position in step S3, the automatic closing operation is performed. If the operation switch 7 is in the manual opening MO position in step S5, the manual opening operation is performed (step S6). In step S7, the operation switch 7 is automatically opened. If it is at the position of AO, an automatic opening operation process is performed (step S8). If the operation switch 7 is not in the auto-open AO position in step S7, the operation switch 7 is in the neutral N position and no processing is performed. Details of steps S2, S4, S6, and S8 will be described below in order.

  FIG. 3 shows a detailed procedure of the “manual closing process” in step S2 of FIG. This processing procedure is not different from the conventional one. The procedure of FIG. 3 is executed by the CPU that constitutes the control unit 1. First, it is determined based on the output of the rotary encoder 4 whether the window 100 is completely closed by the manual closing operation (step S11). If the window 100 is completely closed (step S11: YES), the process is terminated. If the window 100 is not completely closed (step S11: NO), a normal rotation signal is output from the motor drive circuit 2 to cause the motor 3 to rotate forward. The window 100 is closed (step S12). Subsequently, it is determined whether or not the window 100 is completely closed (step S13). If the window 100 is completely closed (step S13: YES), the process is terminated. If the window 100 is not completely closed (step S13: NO), pinching is performed. It is determined whether or not it has been detected (step S14). In detecting this pinching, the rotational speed of the motor 3 is calculated based on the output of the pulse detection circuit 5, the load of the motor is obtained from this rotational speed, and when the load variation exceeds a predetermined threshold value, It is determined that there has been pinching.

  In the present embodiment, a first threshold value and a second threshold value larger than the first threshold value are used as threshold values. When the pinch determination is performed using the first threshold, the pinch is determined to be pinched if the amount of change in the motor load exceeds the first threshold, but when the pinch determination is performed using the second threshold, Even if the amount of change in the load of the motor exceeds the first threshold value, it is not determined that the object is caught, and it is determined that the object is caught only after the second threshold value is exceeded. In the pinching detection in step S14, the first threshold value is used.

  When the object Z is sandwiched as shown in FIG. 14 (step S14: YES), the motor drive circuit 2 outputs a reverse rotation signal to reverse the motor 3 and open the window 100 (step S15). Thereby, the pinching is released. Then, it is determined whether or not the window 100 is completely opened (step S16). If the window 100 is completely opened (step S16: YES), the process is terminated. If the window 100 is not completely opened (step S16: NO), the process proceeds to step S15. Return to continue the reverse rotation of the motor 3.

  If pinching is not detected in step S14 (step S14: NO), it is determined whether or not the operation switch 7 is in the manual closing MC position (step S17). If the operation switch 7 is in the manual closing MC position (step S17: YES), the process returns to step S12 to continue normal rotation of the motor 3, and if it is not in the manual closing MC position (step S17: NO), the automatic closing is performed. It is determined whether or not the position is AC (step S18). If the operation switch 7 is in the auto-closed AC position (step S18: YES), the process proceeds to an auto-close process described later (FIG. 4) (step S19), and if it is not in the auto-closed AC position (step S18: NO), It is determined whether or not the position is the manual opening MO position (step S20). If the operation switch 7 is in the manual opening MO position (step S20: YES), the process proceeds to the manual opening process described later (FIG. 5) (step S21), and if it is not in the manual opening MO position (step S20: NO), It is determined whether or not the automatic open AO position is reached (step S22). If the operation switch 7 is in the auto-open AO position (step S22: YES), the process proceeds to an auto-open process described later (FIG. 6) (step S23). If the operation switch 7 is not in the auto-open AO position (step S22). : NO), the process ends without any processing.

  FIG. 4 shows a detailed procedure of the “automatic closing process” in step S4 of FIG. This processing procedure is a feature of the present invention. The procedure in FIG. 4 is executed by the CPU that constitutes the control unit 1. First, the threshold change flag is reset to 0 (step S31). The threshold change flag is a flag that is set to 1 when the threshold is changed from the first threshold to the second threshold, and is stored in a predetermined area of the memory 6. In the initial state, the first threshold is selected from the first threshold and the second threshold. Next, it is determined based on the output of the rotary encoder 4 whether or not the window 100 is completely closed by the automatic closing operation (step S32). If the window 100 is completely closed (step S32: YES), the process proceeds to step S47. If the window 100 is not completely closed (step S32: NO), the process proceeds to step S33.

  In step S33, it is determined whether the threshold value change flag is 0 or not. Initially, since the threshold value change flag is 0 (step S33: YES), the process proceeds to step S34a, and it is determined whether or not the ignition switch 9 (FIG. 1) is in the OFF state (OFF state). When the ignition switch 9 is in the OFF state (step S34a: YES), the process proceeds to step S35, and it is determined based on the detection output of the door close detection switch 8 whether the door is in the open state. If the door is open (step S35: YES), the threshold value is increased (step S36). That is, the first threshold value is replaced with the second threshold value. Then, the threshold change flag is set to 1 (step S37). Further, when the ignition switch 9 is in the on state (ON state) (step S34a: NO) or when the door is in the closed state (step S35: NO), steps S36 and S37 are not executed and the threshold value is set to the first threshold. The process proceeds to step S38.

  In step S38, a normal rotation signal is output to the motor drive circuit 2, the motor 3 is rotated forward, and the window 100 is closed. Subsequently, it is determined whether or not the window 100 is completely closed (step S39). If the window 100 is completely closed (step S39: YES), the process proceeds to step S47, and if it is not completely closed (step S39: NO), It transfers to step S40 and it is determined whether the pinching was detected. In detecting this pinching, as described above, the rotational speed of the motor 3 is calculated based on the output of the pulse detection circuit 5, the motor load is obtained from this rotational speed, and the amount of change in the load reaches a predetermined threshold value. When it exceeds, it is determined that there has been pinching. In the pinching detection in step S40, either the first threshold value or the second threshold value is used according to the determination results in steps S34a and S35. When the second threshold value is used (when both the determinations in steps S34a and S35 are YES), the threshold value is increased, thereby preventing erroneous determination as being caught even if there is vibration due to the door closing. can do.

  If the object Z is sandwiched as shown in FIG. 14 (step S40: YES), the motor drive circuit 2 outputs a reverse rotation signal to reverse the motor 3 and open the window 100 (step S41). Thereby, the pinching is released. Then, it is determined whether or not the window 100 is completely opened (step S42). If it is completely opened (step S42: YES), the process proceeds to step S47. If it is not completely opened (step S42: NO), step S41 is performed. Return to, and continue the reverse rotation of the motor 3.

  If pinching is not detected in step S40 (step S40: NO), it is determined whether or not the operation switch 7 is in the manual opening MO position (step S43). If the operation switch 7 is in the manual opening MO position (step S43: YES), the process proceeds to the manual opening process described later (FIG. 5) (step S44), and if it is not in the manual opening MO position (step S43: NO), It is determined whether or not the automatic opening AO is in the position (step S45). If the operation switch 7 is in the auto-open AO position (step S45: YES), the process proceeds to an auto-open process described later (FIG. 6) (step S46). If the operation switch 7 is not in the auto-open AO position (step S45). : NO), it returns to step S33. If the threshold value is changed to the second threshold value in step S36 and the threshold flag is set to 1 in step S37, the determination in step S33 is NO, and steps S34a to S37 are omitted, and the process proceeds to step S38. Move. That is, the window auto-close operation is continued while the second threshold is maintained.

  If the determination is YES in steps S32, S39, and S42, and after execution of steps S44 and S46, the process proceeds to step S47 and the threshold value change flag is set to zero. Thereafter, the threshold is returned from the second threshold to the first threshold (step S48), and the process is terminated.

  As described above, in the embodiment shown in FIG. 4, the threshold value is raised only when the ignition switch 9 is in the OFF state and the door is in the open state. The fact that the door is opened with the ignition switch 9 turned off means that there is a high possibility that the occupant will get off, and it is assumed that the door will eventually be closed. Therefore, by changing the threshold value from the first threshold value to the second threshold value and raising the threshold value in this situation, it is possible to prevent a window from being opened due to erroneous detection of pinching due to an impact when the door is closed. Can do. Even if the threshold value is increased, the passenger gets off, so there is little risk of being caught. On the other hand, when the ignition switch 9 is in the on state or the door is in the closed state, it is unlikely that the passenger will get off the vehicle. Even if an arm or the like is accidentally pinched in the window during the closing operation, the original pinching detection function works to open the window and avoid the danger of pinching.

  Moreover, since the door open / closed state and the ignition switch 9 on / off state can be detected by using the existing door closing detection switch 8 and the ignition switch 9 provided in the vehicle, it is not necessary to provide a separate detection means. It can be realized simply and inexpensively. Further, since the threshold value can be raised before the door is closed by detecting the open state of the door, the threshold value due to the delay of the detection signal, such as when the threshold value is raised by the door closing detection signal when the door is closed. There is no delay in the timing of raising the door, and it is possible to prevent malfunction when the door is closed.

  FIG. 5 shows a detailed procedure of the “manual opening process” in step S6 of FIG. This processing procedure is not different from the conventional one. The procedure in FIG. 5 is executed by the CPU constituting the control unit 1. First, it is determined based on the output of the rotary encoder 4 whether or not the window 100 is completely opened by the manual opening operation (step S51). If the window 100 is completely opened (step S51: YES), the process is terminated. If the window 100 is not completely opened (step S51: NO), a reverse signal is output from the motor drive circuit 2 to reverse the motor 3, and the window 100 Is opened (step S52). Subsequently, it is determined whether or not the window 100 is completely opened (step S53). If the window 100 is completely opened (step S53: YES), the processing is terminated. If the window 100 is not completely opened (step S53: NO), the operation switch It is determined whether or not 7 is at the position of manual opening MO (step S54). If the operation switch 7 is in the manual opening MO position (step S54: YES), the process returns to step S52 to continue the reverse rotation of the motor 3, and if it is not in the manual opening MO position (step S54: NO), the automatic opening AO It is determined whether it is in the position (step S55). If the operation switch 7 is in the position of auto-open AO (step S55: YES), the process proceeds to the auto-open process described later (FIG. 6) (step S56), and if it is not in the position of auto-open AO (step S55: NO), It is determined whether or not the position is the manual closing MC position (step S57). If the operation switch 7 is in the manual closing MC position (step S57: YES), the process proceeds to the manual closing process described above (FIG. 3) (step S58), and if it is not in the manual closing MC position (step S57: NO), It is determined whether or not the automatic close AC position is reached (step S59). If the operation switch 7 is in the auto-close AC position (step S59: YES), the process proceeds to the auto-close process described above (FIG. 4) (step S60). If the operation switch 7 is not in the auto-close AC position (step S59). : NO), the process ends without any processing.

  FIG. 6 shows a detailed procedure of the “automatic opening process” in step S8 of FIG. This processing procedure is not different from the conventional one. The procedure in FIG. 6 is executed by the CPU that constitutes the control unit 1. First, it is determined based on the output of the rotary encoder 4 whether or not the window 100 is completely opened by the automatic opening operation (step S71). If the window 100 is completely opened (step S71: YES), the process is terminated. If the window 100 is not completely opened (step S71: NO), a reverse signal is output from the motor drive circuit 2 to reverse the motor 3, and the window 100 Is opened (step S72). Subsequently, it is determined whether or not the window 100 is completely opened (step S73). If the window 100 is completely opened (step S73: YES), the processing is terminated. If the window 100 is not completely opened (step S73: NO), the operation switch It is determined whether or not 7 is at the position of the manual closing MC (step S74). If the operation switch 7 is in the manual closing MC position (step S74: YES), the process proceeds to the manual closing process described above (FIG. 3) (step S75), and if not in the manual closing MC position (step S74: NO), It is determined whether or not the automatic close AC position is reached (step S76). If the operation switch 7 is in the automatic closing AC position (step S76: YES), the process proceeds to the automatic closing process described above (FIG. 4) (step S77), and if the operating switch 7 is not in the automatic closing AC position (step S76). : NO), the process returns to step S72 and the reverse rotation of the motor 3 is continued.

  FIG. 7 is a flowchart showing a procedure of automatic closing processing in another embodiment of the present invention. Note that the procedures of the manual closing process, the manual opening process, and the automatic opening process are the same as those shown in FIGS. 3, 5, and 6, respectively. In FIG. 7, only step S34a of FIG. 4 is replaced with step S34b, and other than that, it is the same as FIG. In step S34b, it is determined whether or not the door is locked based on the detection output of the door lock detection sensor 10. If the door is not locked (step S34b: YES), the process proceeds to step S35 and the door is opened. Whether or not it is in a state is determined based on the detection output of the door close detection switch 8. If the door is open (step S35: YES), the threshold value is increased (step S36). That is, the first threshold value is replaced with the second threshold value. Then, the threshold change flag is set to 1 (step S37). If the door is not locked (step S34b: NO), or if the door is closed (step S35: NO), steps S36 and S37 are not executed, and the threshold value is left as the first threshold value. Then, the process proceeds to step S38. The procedure after step S38 is the same as that in FIG.

  In the embodiment of FIG. 7, the threshold is raised only when the door is not locked and the door is open. The fact that the door is opened without the door being locked means that there is a high possibility that the occupant will get off the vehicle, and it is assumed that the door will eventually be closed. Therefore, by changing the threshold value from the first threshold value to the second threshold value and raising the threshold value in this situation, it is possible to prevent a window from being opened due to erroneous detection of pinching due to an impact when the door is closed. Can do. Even if the threshold value is increased, the occupant gets off, so there is little risk of being caught. On the other hand, if the door is locked or the door is closed, it is unlikely that the occupant will get out of the vehicle. Even if an arm or the like is accidentally sandwiched in the window inside, the original pinching detection function works to open the window and avoid the danger of pinching.

  Further, since the open / closed state of the door and the presence / absence of the door lock can be detected by using the existing door close detection switch 8 or the door lock detection sensor 10 provided in the vehicle, it is not necessary to provide a dedicated detection means separately. Simple and inexpensive. Further, since the threshold value can be raised before the door is closed by detecting the open state of the door, the threshold value due to the delay of the detection signal, such as when the threshold value is raised by the door closing detection signal when the door is closed. There is no delay in the timing of raising the door, and it is possible to prevent malfunction when the door is closed.

  FIG. 8 is a flowchart showing the procedure of automatic closing processing in another embodiment of the present invention. Note that the procedures of the manual closing process, the manual opening process, and the automatic opening process are the same as those shown in FIGS. 3, 5, and 6, respectively. In FIG. 8, only step S34a in FIG. 4 is replaced with step S34c, and otherwise, there is no change from FIG. In step S34c, it is determined based on the output of the power supply voltage detection circuit 11 whether the power supply voltage is lower than a predetermined value. If the power supply voltage is lower than the predetermined value (step S34c: YES), the process proceeds to step S35 and the door is open. Is determined based on the detection output of the door close detection switch 8. If the door is open (step S35: YES), the threshold value is increased (step S36). That is, the first threshold value is replaced with the second threshold value. Then, the threshold change flag is set to 1 (step S37). When the power supply voltage is equal to or higher than the predetermined value (step S34c: NO) or when the door is closed (step S35: NO), steps S36 and S37 are not executed and the threshold value remains the first threshold value. Then, the process proceeds to step S38. The procedure after step S38 is the same as that in FIG.

  In the embodiment of FIG. 8, the threshold value is raised only when the power supply voltage is lower than a predetermined value and the door is open. When the engine is in operation, the power supply voltage is 13.5V, for example, due to the power generated by the generator. However, if the engine stops operating, the generator stops generating power and the power supply voltage drops to, for example, 12V (battery voltage). To do. Therefore, when the door is opened in a state where the power supply voltage is reduced, it means that there is a high possibility that the engine will stop and the occupant will get off, and it is assumed that the door will eventually be closed. Therefore, by changing the threshold value from the first threshold value to the second threshold value and raising the threshold value in this situation, it is possible to prevent a window from being opened due to erroneous detection of pinching due to an impact when the door is closed. Can do. Even if the threshold value is increased, the passenger gets off, so there is little risk of being caught. On the other hand, when the power supply voltage is not lowered or the door is closed, it is unlikely that the occupant will get off the vehicle, so by leaving the threshold at the first threshold, Even if an arm or the like is accidentally sandwiched between windows that are being closed, the original pinching detection function works to open the window, and the danger of pinching can be avoided.

  Further, since the door open / closed state and the presence or absence of the power supply voltage can be detected by using the existing door close detection switch 8 or power supply voltage detection circuit 11 provided in the vehicle, there is no need to provide a dedicated detection means. It can be realized simply and inexpensively. Further, since the threshold value can be raised before the door is closed by detecting the open state of the door, the threshold value due to the delay of the detection signal, such as when the threshold value is raised by the door closing detection signal when the door is closed. There is no delay in the timing of raising the door, and it is possible to prevent malfunction when the door is closed.

  FIG. 9 is a flowchart showing a procedure of automatic closing processing in another embodiment of the present invention. Note that the procedures of the manual closing process, the manual opening process, and the automatic opening process are the same as those shown in FIGS. 3, 5, and 6, respectively. In FIG. 9, step S34a in FIG. 4 is merely replaced with step S34d, and other than that, there is no change from FIG. In step S34d, it is determined whether or not an occupant is present based on the detection output of the occupant detection sensor 12. If the occupant is not present (step S34d: YES), the process proceeds to step S35, and the door is opened. Whether or not the door is open is determined based on the detection output of the door close detection switch 8. If the door is open (step S35: YES), the threshold value is increased (step S36). That is, the first threshold value is replaced with the second threshold value. Then, the threshold change flag is set to 1 (step S37). Further, when the occupant is present (step S34d: NO) or when the door is closed (step S35: NO), steps S36 and S37 are not executed and the threshold value remains the first threshold value. Then, the process proceeds to step S38. The procedure after step S38 is the same as that in FIG.

  In the embodiment of FIG. 9, the threshold value is raised only when no passenger is present and the door is open. The fact that the occupant is no longer detected and the door is opened means that the occupant has a high possibility of getting off, and it is assumed that the door will eventually be closed. Therefore, by changing the threshold value from the first threshold value to the second threshold value and raising the threshold value in this situation, it is possible to prevent a window from being opened due to erroneous detection of pinching due to an impact when the door is closed. Can do. Even if the threshold value is increased, the passenger gets off, so there is little risk of being caught. On the other hand, if the occupant is present or the door is closed, it is unlikely that the occupant will get off the vehicle. Therefore, if the threshold is kept at the first threshold, the occupant in the vehicle is closed. Even if an arm or the like is accidentally sandwiched between windows during operation, the original pinching detection function works to open the window, and the danger of pinching can be avoided.

  In addition, since the open / closed state of the door and the presence / absence of an occupant can be detected by using the existing door close detection switch 8 and the occupant detection sensor 12 (such as a seating sensor) provided in the vehicle, There is no need to provide it, and it can be realized simply and inexpensively. Further, since the threshold value can be raised before the door is closed by detecting the open state of the door, the threshold value due to the delay of the detection signal, such as when the threshold value is raised by the door closing detection signal when the door is closed. There is no delay in the timing of raising the door, and it is possible to prevent malfunction when the door is closed.

  FIG. 10 is a flowchart showing the procedure of the automatic closing process in another embodiment of the present invention. Note that the procedures of the manual closing process, the manual opening process, and the automatic opening process are the same as those shown in FIGS. 3, 5, and 6, respectively. In FIG. 10, only step S34a in FIG. 4 is replaced with step S34e, and otherwise, there is no change from FIG. In step S34e, the presence or absence of a car key is determined based on the detection output of the key detection sensor 13. The key detection sensor 13 detects whether or not the car key is set at a predetermined location. For example, in the case of a normal key, it is detected whether or not the key is inserted into the key insertion slot. In the case of a smart entry key, it is determined whether or not the key is placed at a predetermined position. To detect. When the key is not detected (step S34e: YES), the process proceeds to step S35, and it is determined based on the detection output of the door close detection switch 8 whether or not the door is open. If the door is open (step S35: YES), the threshold value is increased (step S36). That is, the first threshold value is replaced with the second threshold value. Then, the threshold change flag is set to 1 (step S37). If a key is detected (step S34e: NO), or if the door is closed (step S35: NO), steps S36 and S37 are not executed and the threshold value is left as the first threshold value. Control goes to step S38. The procedure after step S38 is the same as that in FIG.

  In the embodiment of FIG. 10, the threshold value is raised only when no key is detected and the door is open. The fact that the key is not detected and the door is open means that the key is pulled out and there is a high possibility that the occupant will get off the vehicle, and it is assumed that the door will eventually be closed. Therefore, by changing the threshold value from the first threshold value to the second threshold value and raising the threshold value in this situation, it is possible to prevent a window from being opened due to erroneous detection of pinching due to an impact when the door is closed. Can do. Even if the threshold value is increased, the passenger gets off, so there is little risk of being caught. On the other hand, if the key is detected or the door is closed, it is unlikely that the passenger will get off. Therefore, if the threshold value remains at the first threshold value, the passenger in the vehicle will be closed. Even if an arm or the like is accidentally sandwiched in the window inside, the original pinching detection function works to open the window and avoid the danger of pinching.

  In addition, since the open / closed state of the door and the presence / absence of a key can be detected by using the existing door close detection switch 8 or the key detection sensor 13 provided in the vehicle, it is not necessary to provide a dedicated detection means, and It can be realized at low cost. Further, since the threshold value can be raised before the door is closed by detecting the open state of the door, the threshold value due to the delay of the detection signal, such as when the threshold value is raised by the door closing detection signal when the door is closed. There is no delay in the timing of raising the door, and it is possible to prevent malfunction when the door is closed.

  In the embodiment described above, the load of the motor 3 is detected based on the rotational speed. However, instead of this, the load may be detected based on the current flowing through the motor 3. In this case, a current detection circuit may be provided as load detection means. In the above embodiment, the second threshold is set larger than the first threshold. However, depending on the load change amount calculation formula, the first threshold may be set larger than the second threshold. The first threshold value and the second threshold value may be different values.

  In addition, as shown in the embodiment, the situation where the ignition switch is turned off when the door is open, or the occupant's seat or key is not detected when the door is open is only when getting off the vehicle. It can happen even when you get on, but you can't open and close the window before you get on, so you don't have to worry about being caught by the auto-close operation. On the other hand, since there is a vehicle type that can be automatically closed for a certain time (for example, 30 seconds) even when the key is removed, the present invention is effective in this case.

It is the block diagram which showed the electrical structure of the power window apparatus which concerns on this invention. It is the flowchart which showed the basic operation | movement of the power window apparatus. It is a flowchart showing the detailed procedure of the manual closing process. It is a flowchart showing the detailed procedure of the automatic closing process. It is a flowchart showing the detailed procedure of the manual opening process. It is a flowchart showing the detailed procedure of the automatic opening process. It is a flowchart showing the detailed procedure of the automatic closing process in other embodiment. It is a flowchart showing the detailed procedure of the automatic closing process in other embodiment. It is a flowchart showing the detailed procedure of the automatic closing process in other embodiment. It is a flowchart showing the detailed procedure of the automatic closing process in other embodiment. It is the block diagram which showed the electrical structure of the general power window apparatus. It is the schematic block diagram which showed an example of the operation switch. It is the figure which showed an example of the window opening / closing mechanism. It is a figure which shows the state by which the object was pinched | interposed into the window.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control part 2 Motor drive circuit 3 Motor 4 Rotary encoder 5 Pulse detection circuit 6 Memory 7 Operation switch 8 Door close detection switch 9 Ignition switch 10 Door lock detection sensor 11 Power supply voltage detection circuit 12 Occupant detection sensor 13 Key detection sensor 100 Window 101 Window glass 102 Window opening / closing mechanism Z Object

Claims (6)

Load detecting means for detecting a load of a motor for opening and closing a vehicle window;
Comparison means for comparing the load change amount detected by the load detection means with a predetermined threshold;
Determination means for determining whether or not a foreign object has been caught in the window based on a comparison result by the comparison means;
Control means for controlling the motor to open a window when it is determined by the determination means that a foreign object has been sandwiched;
In a window opening and closing control device having
Equipped with a detecting means for detecting whether or not a passenger in the vehicle can get off,
When the detection means detects that there is no possibility of getting off, the comparison means compares the amount of change of the load detected by the load detection means with a first threshold value, and the detection means has a possibility of getting off. When detecting that, the load change amount detected by the load detection means is compared with a second threshold different from the first threshold,
The window opening / closing control apparatus according to claim 1, wherein the determination unit determines whether or not a foreign object is caught based on a comparison result by the comparison unit while the window is closed by the motor. In the window opening and closing control device according to claim 1,
The detection means includes
The first detection means for detecting the open / closed state of the vehicle door, and the second detection means for detecting the on / off state of the ignition switch,
Window opening / closing control characterized in that when the first detection means detects the open state of the door and the second detection means detects the ignition switch OFF state, the possibility of the passenger getting off is detected. apparatus. In the window opening and closing control device according to claim 1,
The detection means includes
The first detection means for detecting the open / closed state of the door of the vehicle and the second detection means for detecting the presence or absence of the door lock,
A window characterized in that when the first detection means detects an open state of the door and the second detection means detects that the door is not locked, the possibility of the passenger getting off is detected. Open / close control device. In the window opening and closing control device according to claim 1,
The detection means includes
The first detection means for detecting the open / closed state of the vehicle door and the second detection means for detecting the power supply voltage,
When the first detection means detects an open state of the door and the second detection means detects that the power supply voltage is lower than a predetermined value, it detects the possibility of the passenger getting off. Window opening and closing control device. In the window opening and closing control device according to claim 1,
The detection means includes
The first detection means for detecting the open / closed state of the vehicle door and the second detection means for detecting the presence or absence of a passenger,
A window opening / closing control device, wherein when the first detection means detects an open state of the door and the second detection means detects the absence of an occupant, the possibility of the passenger getting out is detected. . In the window opening and closing control device according to claim 1,
The detection means includes
The first detection means for detecting the open / closed state of the door of the vehicle, and the second detection means for detecting the presence or absence of a key,
A window opening / closing control device, wherein when the first detection means detects an open state of the door and the second detection means does not detect a key, the possibility of a passenger getting off is detected.

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