JP2016145467A - Vehicle window opening and closing device - Google Patents

Abstract

A vehicle window opening / closing device capable of suppressing the occurrence of malfunction when a vehicle door is closed is provided.
A control circuit determines that a foreign object has been caught by the window glass when a speed fluctuation amount ω of the motor, which fluctuates in accordance with a load fluctuation applied to the window glass being opened, is equal to or greater than a winding determination threshold value T. The entrainment determination threshold value T is set to a normal value TL or a door opening value TH that is larger than the normal value TL depending on the open / close state of the vehicle door.
[Selection] Figure 2

Description

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

  2. Description of the Related Art Conventionally, as disclosed in, for example, Patent Document 1, there is a vehicle window opening / closing device (power window device) having an entrainment preventing function that suppresses foreign objects from being entrained inside, for example, a door by a vehicle window being opened. In such a vehicle window opening / closing device, the entrainment of a foreign object by the vehicle window being opened is detected from the characteristic value of the motor as a drive source (changes in rotational speed, etc.), and the motor drive, for example, is detected based on the detection result. Is supposed to stop.

JP 2011-122369 A

  However, in the vehicle window opening and closing device as described above, when the vehicle door is closed while the vehicle window is opened, foreign matter is involved when the fluctuation of the characteristic value of the motor increases due to the impact of closing the door. There is a risk of false detection. When erroneous detection of foreign matter entrainment occurs, there is a problem in that a malfunction occurs in which entrainment prevention control (for example, motor drive stop) operates even though the entrainment does not actually occur.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a vehicle window opening / closing device capable of suppressing the occurrence of malfunction when the vehicle door is closed. .

  A vehicle window opening and closing device that solves the above problems includes an opening and closing control unit that controls the operation of the vehicle window that is opened and closed by the driving force of the motor by controlling the driving of the motor based on the operation of the operation switch; A winding determination unit that determines that a foreign object has been caught by the vehicle window when a characteristic value of the motor that fluctuates according to a load variation applied to the vehicle window is equal to or greater than a determination threshold; A vehicle window opening / closing device that executes an entrainment prevention control that stops or reverses the opening operation of the vehicle window based on the entrainment determination by the entrainment determination unit, wherein the entrainment determination unit opens and closes the vehicle door The determination threshold is set according to the state.

  According to this configuration, the determination threshold value for entrainment determination is set according to the open / close state of the vehicle door. As a result, it is possible to set the determination threshold value when the vehicle door is in an open state to an appropriate value, and it is possible to prevent erroneous detection of foreign matter entrainment when the vehicle door is closed while the vehicle window is opened. It becomes possible to suppress. As a result, it is possible to suppress the occurrence of malfunction when the vehicle door is closed.

  In the vehicle window opening and closing apparatus, the entrainment determination unit sets a first value as the determination threshold when the vehicle door is in a closed state, and the first value when the vehicle door is in an open state. It is preferable to set a larger second value as the determination threshold.

  According to this configuration, when the vehicle door is in the closed state, the normal value is set as the determination threshold value. When the vehicle door is in the open state, the motor characteristic value varies greatly due to the impact of closing the vehicle door. Even so, an appropriate value (a value larger than the normal value) that does not detect entrainment can be set as the determination threshold. As a result, it is possible to suitably suppress the occurrence of erroneous detection of foreign matter entrainment when the vehicle door is closed while the vehicle window is opened.

  A vehicle window opening and closing device that solves the above problems includes an opening and closing control unit that controls the operation of the vehicle window that is opened and closed by the driving force of the motor by controlling the driving of the motor based on the operation of the operation switch; A winding determination unit that determines that a foreign object has been caught by the vehicle window when a characteristic value of the motor that fluctuates according to a load variation applied to the vehicle window is equal to or greater than a determination threshold; A vehicle window opening / closing device that executes a winding prevention control for stopping the opening operation of the vehicle window or performing a reverse operation by a predetermined amount based on the winding determination by the winding determination unit, and when the vehicle door is in an open state, A regulation unit is provided for regulating the entrapment prevention control by the opening / closing control unit even when the characteristic value of the motor is equal to or greater than the determination threshold value.

  According to this configuration, when the vehicle door is in the closed state, the entrainment determination is executed, and when the vehicle door is in the open state, the entrainment prevention control ( The operation is stopped from being executed or the predetermined amount of reversing operation is not executed. For this reason, when the vehicle door is closed while the vehicle window is open, even if the characteristic value of the motor fluctuates greatly, the entrainment prevention control can be prevented from being executed. Occurrence of malfunction when closed can be suppressed.

  According to the vehicle window opening and closing device of the present invention, it is possible to suppress the occurrence of malfunction when the vehicle door is closed.

It is an electric block diagram which shows schematic structure of the power window apparatus of embodiment. It is a flowchart for demonstrating the control aspect in the power window apparatus of the form. It is a graph for demonstrating the fluctuation | variation of the rotational speed of a motor when a vehicle door is closed in the state which is carrying out the opening operation of a vehicle window. It is a flowchart for demonstrating the control aspect in the power window apparatus of another example.

Hereinafter, an embodiment of a vehicle window opening and closing device will be described.
As shown in FIG. 1, a power window device 10 (vehicle window opening / closing device) of the present embodiment is attached to a vehicle door D so as to open and close a window glass WG, and includes a motor 11 and rotational driving of the motor 11. For example, an X-arm type window regulator (not shown) that opens and closes the window glass WG. The motor 11 is constituted by a geared motor in which a speed reduction unit is integrally assembled with a DC motor. The window regulator converts the rotation of the motor 11 into an opening / closing operation of the window glass WG.

  The power window device 10 includes a window ECU 12 that controls the motor 11 to control the operation of the window glass WG, and a rotation detection sensor 13 that detects the rotation of the motor 11. The rotation detection sensor 13 is made of, for example, a Hall IC, detects a magnetic field change accompanying rotation of a sensor magnet (not shown) provided on the rotation shaft of the motor 11, and detects rotation information such as the rotation speed and rotation position of the motor 11. Is detected.

  The window ECU 12 is provided separately from the motor 11 or integrally with the motor 11. The window ECU 12 includes a control circuit 21 and a drive circuit 22, and the drive circuit 22 supplies power to the motor 11 from an in-vehicle battery 23 based on the control of the control circuit 21.

  The control circuit 21 controls the opening and closing of the window glass WG by rotating the motor 11 through the drive circuit 22 based on the operation of the operation switch 24 provided in the vehicle door D. Further, the control circuit 21 calculates the position information of the window glass WG based on the rotation detection signal (pulse signal) output from the rotation detection sensor 13. In the present embodiment, the control circuit 21 uses the fully closed position of the window glass WG as a reference (zero), and the rotation detection signal added or subtracted with the opening / closing operation of the window glass WG (that is, forward / reverse rotation of the motor 11). The number of counts of pulse edges (rising edge and falling edge) is calculated as position information of the window glass WG. The control circuit 21 detects the rotation direction of the motor 11 based on the rotation detection signal. The control circuit 21 calculates the rotation speed of the motor 11 from the pulse interval (cycle) of the rotation detection signal, and calculates the fluctuation amount of the motor 11 (speed fluctuation amount ω).

  The control circuit 21 has a function of preventing pinching between the window glass WG and the frame of the vehicle door D. This pinching prevention function detects foreign object pinching by the window glass WG during the closing operation (upward operation) from the change in the rotational speed of the motor 11 calculated based on the rotation detection signal, and foreign object pinching is detected. The window glass WG is reversely operated in the opening direction to release the foreign matter sandwiched therebetween.

  The control circuit 21 also has a function of preventing foreign matter from being caught in the vehicle door D by the window glass WG during opening operation (descent operation). Specifically, the control circuit 21 compares the speed fluctuation amount ω of the motor 11 calculated based on the rotation detection signal with the entrainment determination threshold T during the opening operation of the window glass WG. Then, when the speed fluctuation amount ω is equal to or greater than the entrainment determination threshold T, it is determined that foreign matter entrainment has occurred due to the wind glass WG, and based on the entrainment determination, the driving of the motor 11 is stopped to open the wind glass WG. Stop.

  The control circuit 21 receives a signal from a door open / close detection switch 25 (curtain switch) that detects opening / closing of the vehicle door D. The door open / close detection switch 25 outputs a door open signal to the control circuit 21 when the vehicle door D is open, and outputs a door close signal when the vehicle door D is closed, respectively.

Next, the control mode and operation of the power window device 10 of this embodiment will be described.
As shown in FIG. 2, the control circuit 21 supplies power to the motor 11 via the drive circuit 22 based on the opening operation of the operation switch 24, and opens the window glass WG (step S1).

  Next, the control circuit 21 performs opening / closing determination of the vehicle door D based on the signal from the door opening / closing detection switch 25 in step S2. Here, when the signal input from the door open / close detection switch 25 is a door close signal, the control circuit 21 determines that the vehicle door D is in the closed state, and sets the normal value TL as the entrainment determination threshold value T. (Step S3). On the other hand, when the signal input from the door open / close detection switch 25 is a door open signal, it is determined that the vehicle door D is in an open state, and a door opening value TH larger than the normal value TL is included. T is set (step S4).

  After the winding determination threshold value T is set in step S3 or step S4, the control circuit 21 proceeds to the winding determination in step S5. In step S5, the control circuit 21 compares the speed fluctuation amount ω of the motor 11 with the entrainment determination threshold value T. When the speed variation amount ω is equal to or greater than the entrainment determination threshold value T, it is assumed that the foreign matter entrainment due to the window glass WG has occurred. Based on the determination, the driving of the motor 11 is stopped and the opening operation of the window glass WG is stopped. On the other hand, when the speed fluctuation amount ω is less than the entrainment determination threshold value T, it is determined that no foreign object entrainment due to the window glass WG has occurred, and step S5 is repeated.

  As described above, when it is determined that the vehicle door D is in the open state, the value TH for opening the door is set as the entrainment determination threshold value T, and the entrainment determination using the value TH is executed. Here, FIG. 3 shows fluctuations in the rotational speed of the motor 11 when the operation switch 24 is opened with the vehicle door D opened and the window glass WG is opened from the fully closed position to the fully open position. ing. As shown in the figure, when the vehicle door D is closed while the window glass WG is being opened, the rotational speed of the motor 11 temporarily drops due to the impact of closing the vehicle door D. That is, the speed fluctuation amount ω of the motor 11 is increased. In this case, the door opening value TH is set to the entrainment determination threshold T as described above, and the door opening value TH is determined by the speed fluctuation amount ω of the motor 11 due to the impact of closing the vehicle door D. The value is set to a value larger than the normal value TL so that the entrainment is not detected even when the value becomes large. For this reason, it is suppressed that the erroneous detection of a foreign material entrainment arises by the impact when the vehicle door D is closed.

Next, characteristic effects of the present embodiment will be described.
(1) The control circuit 21 sets the entrainment determination threshold T according to the open / close state of the vehicle door D. For this reason, the entrainment determination threshold value T is set according to the open / closed state of the vehicle door D. As a result, it is possible to set the entrainment determination threshold T when the vehicle door D is in the open state to an appropriate value, and the foreign matter entrainment when the vehicle door D is closed while the window glass WG is opened. The occurrence of false detection can be suppressed. As a result, when the vehicle door D is closed while the window glass WG is opened, malfunction prevention control (motor 11 drive stop) is executed even though no foreign matter is involved. Can be suppressed.

  (2) When the vehicle door D is in the closed state, the control circuit 21 sets the normal value TL (first value) as the entrainment determination threshold value T. When the vehicle door D is in the open state, the control circuit 21 uses the normal value TL. The door opening value TH (second value) is set as the entrainment determination threshold value T. According to this configuration, when the vehicle door D is in the closed state, the normal value TL is set as the entrainment determination threshold value T. When the vehicle door D is in the open state, the impact of closing the vehicle door D is caused. An appropriate value (a value larger than the normal value TL) that does not detect the entrainment even if the speed variation amount ω of the motor 11 varies greatly can be set as the entrainment determination threshold T. As a result, it is possible to suitably suppress the occurrence of erroneous detection of foreign matter entrainment when the vehicle door D is closed while the window glass WG is opened.

In addition, you may change the said embodiment as follows.
In the above embodiment, the control circuit 21 performs the opening / closing determination (step S2) of the vehicle door D after opening the window glass WG (after step S1), but based on the opening operation of the operation switch 24. Then, after the opening / closing determination of the vehicle door D is performed, the window glass WG may be controlled to open.

  In the above embodiment, either the normal value TL or the door opening value TH is set as the entrainment determination threshold T according to the open / closed state of the vehicle door D at the start of the opening operation of the window glass WG. At the time of opening operation of the window glass WG, regardless of the open / closed state of the vehicle door D during the opening operation of the window glass WG, the winding determination is made by the winding determination threshold T set at the start of the opening operation. . However, the present invention is not limited to this, and the entrainment determination threshold value T is switched to the normal value TL or the door opening value TH according to the open / closed state of the vehicle door D during the opening operation of the window glass WG. You may control. For example, when the vehicle door D is opened during the opening operation of the window glass WG, the entrainment determination threshold value T is changed from the normal value TL to the door opening value TH, and the window glass WG During the opening operation, the entrainment determination threshold value T may be controlled to be fixed to the door opening value TH regardless of the open / closed state of the vehicle door D.

  In the above embodiment, when the vehicle door D is in the open state, the control circuit 21 sets the door opening time value TH larger than the normal value TL as the entrainment determination threshold value T. For example, FIG. Control as shown in FIG. In the flowchart shown in the figure, when the control circuit 21 determines in step S2 that the vehicle door D is in the open state, the entrainment prevention function is invalidated in the opening operation (step S11). That is, at this time, even if the speed fluctuation amount ω of the motor 11 during the opening operation is equal to or greater than the entrainment determination threshold T, the control circuit 21 does not stop driving the motor 11 (entrainment prevention control). On the other hand, when it is determined in step S2 that the vehicle door D is in the open state, the control circuit 21 performs the entrainment determination based on the entrainment determination threshold T (normal value TL).

  According to this, when the vehicle door D is in the closed state, the entrainment determination is performed, and when the vehicle door D is in the open state, the speed fluctuation amount ω of the motor 11 is equal to or greater than the entrainment determination threshold T. However, it is restricted so that the entrainment prevention control is not executed. For this reason, when the vehicle door D is closed while the window glass WG is opened, it is possible to prevent the entrainment prevention control from being executed even if the speed fluctuation amount ω of the motor 11 fluctuates greatly. As a result, the occurrence of malfunction when the vehicle door D is closed can be suppressed.

  In the above embodiment, the control circuit 21 detects the foreign matter entrainment based on the speed fluctuation amount ω of the motor 11, but is not particularly limited to this, and a characteristic value other than the speed fluctuation amount ω of the motor 11. Entrainment detection may be performed based on (a characteristic value of the motor 11 that varies according to a load variation applied to the window glass WG).

  In the above embodiment, the control circuit 21 stops the driving of the motor 11 based on the entrainment determination and stops the opening operation of the window glass WG. In addition to this, for example, the control circuit 21 closes the wind glass WG based on the entrainment determination. Alternatively, the reverse operation may be performed by a predetermined amount.

  In the above embodiment, the present invention is applied to the power window device 10 using the X-arm type window regulator. However, for example, the present invention may be applied to a power window device using a wire regulator or a single-arm type window regulator. Good.

  In the above embodiment, the present invention is applied to the power window device 10 that opens and closes the window glass WG provided on the vehicle door D. However, for example, the present invention is applied to a sunroof device that opens and closes the roof glass provided on the roof of the vehicle. May be.

Next, a technical idea that can be grasped from the above embodiment and another example will be added below.
(A) In the vehicle window opening and closing device according to claim 1,
When the vehicle door is in a closed state at the start of opening operation of the vehicle window, the entrainment determining unit sets a first value as the determination threshold value during opening operation of the vehicle window, and opens the vehicle window. When the vehicle door is open at the start, the vehicle window opening and closing device is configured to set a second value larger than the first value as the determination threshold value during the opening operation of the vehicle window.

  According to this configuration, when the vehicle door is closed at the start of the opening operation of the vehicle window, the normal value is set as the determination threshold, and when the vehicle door is open at the start of the opening operation of the vehicle window. An appropriate value (a value larger than the normal value) that does not detect entrainment even when the motor characteristic value fluctuates greatly due to the impact of closing the vehicle door can be set as the determination threshold value. As a result, it is possible to suitably suppress the occurrence of erroneous detection of foreign matter entrainment when the vehicle door is closed while the vehicle window is opened.

(B) In the vehicle window opening and closing device according to claim 3,
When the vehicle door is in an open state at the start of the opening operation of the vehicle window, the restricting portion is controlled by the opening / closing control portion even when the characteristic value of the motor is not less than the determination threshold value during the opening operation of the vehicle window. A vehicle window opening and closing device that restricts the entrainment prevention control from being executed.

  According to this configuration, when the vehicle door is closed with the vehicle window opened, even if the motor characteristic value fluctuates greatly, the entrainment prevention control (operation stop or predetermined amount of reversal operation) is not executed. As a result, the occurrence of malfunctions when the vehicle door is closed can be suppressed.

  DESCRIPTION OF SYMBOLS 10 ... Power window apparatus (vehicle window opening / closing apparatus), 11 ... Motor, 21 ... Control circuit (opening / closing control part, entrainment determination part, control part), D ... Vehicle door, WG ... Window glass (vehicle window).

Claims (3)

An opening / closing controller for controlling the opening / closing operation of the vehicle window based on the driving force of the motor;
An entrainment determination unit that determines that a foreign object is entrained by the vehicle window when a characteristic value of the motor that varies in accordance with a load variation applied to the vehicle window during opening operation is equal to or greater than a determination threshold;
The opening and closing control unit is a vehicle window opening and closing device that executes an entrainment prevention control that stops the opening operation of the vehicle window or reverses the vehicle window by a predetermined amount based on the entrainment determination by the entrainment determination unit,
The entrainment determination unit sets the determination threshold according to an open / closed state of a vehicle door. The vehicle window opening and closing device according to claim 1,
The entrainment determination unit sets a first value as the determination threshold when the vehicle door is in a closed state, and a second value greater than the first value when the vehicle door is in an open state. Is set to the determination threshold value. An opening / closing controller for controlling the opening / closing operation of the vehicle window based on the driving force of the motor;
An entrainment determination unit that determines that a foreign object is entrained by the vehicle window when a characteristic value of the motor that varies in accordance with a load variation applied to the vehicle window during opening operation is equal to or greater than a determination threshold;
The opening and closing control unit is a vehicle window opening and closing device that executes an entrainment prevention control that stops the opening operation of the vehicle window or reverses the vehicle window by a predetermined amount based on the entrainment determination by the entrainment determination unit,
A vehicle comprising a restricting portion for restricting the entrainment prevention control by the opening / closing control portion from being executed even when a characteristic value of the motor is equal to or greater than the determination threshold when the vehicle door is in an open state. Window opening and closing device.