JP6394900B2 - Vehicle window opening and closing device - Google Patents

Description

  The present invention relates to a vehicle window opening / closing device such as a power window device mounted on a vehicle.

  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) provided with an entrainment prevention function that suppresses foreign matter from being caught inside a door by a vehicle window that is 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

  By the way, in the vehicle window opening and closing device as described above, since the characteristic value of the motor is not stable due to the backlash of the drive system including the motor at the start of operation, it is erroneously detected that foreign matter is caught (even though the winding does not actually occur). However, it may be detected). Therefore, as a means to solve this problem, it is conceivable to set a mask section in which the entrainment prevention function is invalidated in a predetermined section from the start of the opening operation. In that case, the mask section is set to any length. Whether to do so was an issue to consider.

  When opening the vehicle window from the fully closed state, it is affected not only by the backlash of the drive system but also by the weather strip resistance at the top of the window frame, so compared to when starting operation from other than the fully closed state, A long interval is required from the start of operation until the characteristic value of the motor is stabilized. For this reason, it is necessary to set the length of the mask section to be long enough to cope with the case where the vehicle window is opened from the fully closed state. If set, the mask section becomes longer than necessary when the operation is started from a state other than the fully closed state, and as a result, the entrainment detection performance is lowered.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle window opening / closing device capable of suppressing a decrease in foreign matter entrainment detection performance.

  A vehicle window opening / closing device that solves the above problems includes an opening / closing control unit that controls an opening / closing operation of the vehicle window based on a driving force of the motor, and a characteristic of the motor that varies according to a load variation applied to the vehicle window during the opening operation. An entrainment determining unit that determines that foreign matter is entrained by the vehicle window when the value is equal to or greater than a determination threshold, and the opening / closing control unit opens the vehicle window based on the entrainment determination by the entrainment determining unit. A vehicle window opening / closing device that executes an entrainment prevention control that stops operation or reverses by a predetermined amount, wherein the characteristic value of the motor is equal to or greater than the determination threshold value in an initial movement mask section from the start of the opening operation of the vehicle window. However, the restriction part for restricting the entrainment prevention control by the opening / closing control part from being executed, and the opening operation start position of the vehicle window is outside the fully closed region including the fully closed position. A normal value is set in the initial movement mask section, and when the opening operation start position of the vehicle window is in the fully closed area, a value for the fully closed area that is larger than the normal value is set in the An initial motion mask section setting unit for setting the initial motion mask section.

  According to this configuration, the initial movement when the opening operation start position of the vehicle window is within the fully closed area while the normal value is set in the initial movement mask section when the opening operation start position of the vehicle window is outside the fully closed area. In the mask section, a value for a fully closed region can be set in consideration of the influence of the weather strip. In other words, when the opening operation start position of the vehicle window is outside the fully closed region, the initial movement mask section is set to an appropriate value that does not become longer than necessary, and erroneous detection of foreign object entrainment is reliably prevented during the opening operation from the fully closed region. It is possible to set the initial motion mask section to a length that can be performed, and as a result, it is possible to suppress a decrease in foreign matter entrainment detection performance.

In the vehicle window opening and closing apparatus, it is preferable that the fully closed region is set corresponding to an insertion width of the vehicle window with respect to a weather strip provided on a window frame.
According to this configuration, in a state where the vehicle window is outside the fully closed region, the vehicle window does not contact the weather strip, and the initial motion mask section (normal value) when the opening operation start position is outside the fully closed region is Even if it is set to a value that does not take into account the influence of the weather strip, it is possible to prevent erroneous detection of foreign matter inclusion in the initial movement mask section.

In the vehicle window opening and closing apparatus, it is preferable that the initial motion mask section setting unit sets the magnitude of the value for the fully closed region based on the position of the vehicle window in the fully closed region.
According to this configuration, the initial motion mask section (value for the fully closed area) when the opening operation start position is within the fully closed area is set according to the position of the vehicle window in the fully closed area. The initial motion mask section can be set to a more appropriate appropriate value.

  In the vehicle window opening and closing apparatus, it is preferable that the initial motion mask section setting unit sets the value of the value for the fully closed region based on a voltage value applied to the motor when the vehicle window is closed.

  According to this configuration, the initial motion mask section (the value for the fully closed area) when the opening operation start position is within the fully closed area depends on the voltage applied to the motor at the previous closing operation of the vehicle window. Therefore, the initial motion mask section can be set to a more appropriate appropriate value.

  According to the vehicle window opening and closing device of the present invention, it is possible to suppress a decrease in the detection performance of foreign matter entrainment.

It is an electric block diagram which shows schematic structure of the power window apparatus of embodiment. It is a schematic diagram for demonstrating opening and closing of window glass. It is a flowchart for demonstrating the control aspect in the power window apparatus of the form. It is a flowchart for demonstrating the control aspect in the power window apparatus of another example. 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 Pc of the window glass WG as a reference (zero), and a rotation detection signal that is 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). More specifically, the control circuit 21 compares the speed fluctuation amount ω of the motor 11 calculated based on the rotation detection signal during the opening operation of the window glass WG with the entrainment determination threshold value ωt. Then, when the speed fluctuation amount ω is equal to or greater than the entrainment determination threshold value ωt, 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 and the wind glass WG is opened. Stop.

  As shown in FIG. 2, the control circuit 21 recognizes the fully closed position Pc of the window glass WG, the boundary position Pb near the fully closed position Pc, and the fully open position Po. The fully closed position Pc is set to zero by the pulse edge count as described above. Further, the upper end of the window glass WG can be inserted into the weather strip WS provided at the upper part of the window frame of the vehicle door D by a predetermined length, and the glass surface of the upper end portion of the inserted window glass WG is the weather strip. It is adapted to be elastically pressed against WS. The boundary position Pb is set to a position at which the window glass WG that closes (rises) starts to contact the weather strip WS. That is, the boundary position Pb is set to a count number (for example, 30) corresponding to the insertion width (approximately 5 to 6 mm) to the weather strip WS at the upper end of the window glass WG.

  When opening the window glass WG, the control circuit 21 invalidates the entrainment prevention function in a predetermined section (initial movement mask section M) from the operation start position. When an operation signal based on the operation of the operation switch 24 is input, the control circuit 21 sets the initial motion mask section M according to the position of the window glass WG at that time. Specifically, when the operation signal is input, the control circuit 21 sets the normal value Ms to the initial movement mask section M when the upper end of the window glass WG is on the fully open position Po side (open direction side) with respect to the boundary position Pb. Set. At the start of operation, the speed fluctuation amount ω of the motor 11 becomes unstable due to the play of the drive system including the motor 11 and the window regulator. Therefore, in order to invalidate the entrainment prevention function in the section where the speed fluctuation amount ω becomes unstable. The normal value Ms is set. As an example of the normal value Ms in the present embodiment, the count number of pulse edges is set to 40.

  In addition, when the operation signal is input, the control circuit 21 determines that the upper end of the window glass WG is all larger than the normal value Ms when the upper end of the window glass WG is in the section (fully closed region Ac) from the fully closed position Pc to the boundary position Pb. The value Mc for the closed region is set in the initial motion mask section M. The value Mc for the fully closed region is a value obtained by adding a predetermined correction value Ma (a constant value) to the normal value Ms. As an example of the correction value Ma in the present embodiment, the count number of pulse edges is set to 10, and the value Mc for the fully closed region is obtained by adding the correction value Ma (10) to the normal value Ms (40). 50.

Next, the control mode and its operation at the start of the opening operation in this embodiment will be described.
As shown in FIG. 3, the control circuit 21 determines whether or not the window glass WG is positioned in the fully closed region Ac based on the opening operation of the operation switch 24 in step S1, that is, the window glass WG is more than the boundary position Pb. It is determined whether or not it is located on the fully open side (step S2). When it is determined that the window glass WG is in a position other than the fully closed region Ac (positioned in the opening direction side with respect to the boundary position Pb), the control circuit 21 sets the normal value Ms to the initial motion mask section M ( Step S3). On the other hand, when it is determined that the window glass WG is in the fully closed region Ac (located in the closing direction side of the boundary position Pb or the boundary position Pb), the control circuit 21 sets the value Mc for the fully closed region to the initial motion mask interval. Set to M (step S4).

  Thus, after the initial movement mask section M is set in step S3 or step S4, the control circuit 21 drives the motor 11 to start the opening operation of the window glass WG (step S5).

  In step S6, the control circuit 21 calculates the movement amount ΔP from the operation start position of the window glass WG and the initial motion mask section M (the normal value Ms or the value Mc for the fully closed region) set in step S3 or step S4. Compare. When the movement amount ΔP is equal to or greater than the initial movement mask section M, the process proceeds to the entrainment determination in step S7.

  On the other hand, when the movement amount ΔP is less than the initial movement mask section M, step S6 is repeated. That is, until the window glass WG passes the initial movement mask section M from the operation start position, the entrainment determination in step S7 is not executed (that is, the entrainment prevention function is invalidated). As a result, in the state where the window glass WG is in the initial motion mask section M, the motor 11 is driven even if the speed fluctuation amount ω of the motor 11 becomes greater than or equal to the entrainment determination threshold value ωt due to the backlash of the drive system including the motor 11 and the window regulator. Is not stopped.

  In step S <b> 7, the control circuit 21 determines whether or not a foreign object is caught by the window glass WG that is being opened. At this time, the control circuit 21 compares the speed fluctuation amount ω of the motor 11 with the entrainment determination threshold value ωt, and determines that foreign matter entrainment due to the window glass WG has occurred when the speed variation amount ω is equal to or greater than the entrainment determination threshold value ωt. Then, based on the entrainment determination, the driving of the motor 11 is stopped and the opening operation of the window glass WG is stopped (step S8). On the other hand, when the speed fluctuation amount ω is less than the entrainment determination threshold value ωt, it is determined that no foreign matter entrainment due to the window glass WG has occurred, and step S7 is repeated.

Next, characteristic effects of the present embodiment will be described.
(1) In the initial mask section M from the start of the opening operation of the window glass WG, the control circuit 21 performs the entrainment prevention control (the drive stop of the motor 11) even if the speed fluctuation amount ω of the motor 11 is equal to or greater than the entrainment determination threshold value ωt. ). As a result, when the opening operation of the window glass WG is started, an erroneous detection that detects the entrainment by the backlash of the drive system including the motor 11 and the window regulator, although the entrainment of the foreign matter does not actually occur. As a result, the foreign matter entrainment detection performance can be improved.

  When the opening operation start position of the window glass WG is outside the fully closed region Ac, the control circuit 21 sets the normal value Ms to the initial movement mask section M, and the opening operation start position of the window glass WG is fully closed. If it is within the region Ac, the value Mc for the fully closed region that is larger than the normal value Ms is set in the initial motion mask section M. When the window glass WG is opened from the fully closed region Ac (when the window glass WG is opened from a state in contact with the weather strip WS), the wind glass WG is affected not only by the backlash of the driving system but also by the resistance of the weather strip WS. Compared to the case where the operation is started from a region other than the region Ac, a longer interval is required from the start of the operation until the speed fluctuation amount ω of the motor 11 is stabilized. Therefore, in the present embodiment, when the opening operation start position of the window glass WG is within the fully closed region Ac, a value Mc (a value that takes into account the influence of the weather strip WS) larger than the normal value Ms is initially set. By setting the mask section M, it is possible to prevent erroneous detection of foreign matter entrainment even in this case. When the opening operation start position of the window glass WG is outside the fully closed region Ac, the normal value Ms that does not take into account the influence of the weather strip WS is set in the initial motion mask interval M, so that the initial motion mask interval It is possible to set M to an appropriate value that does not become longer than necessary.

  As described above, when the opening operation start position of the window glass WG is outside the fully closed region Ac, the initial movement mask section M is set to an appropriate value that does not become unnecessarily long, and foreign matter is caught during the opening operation from the fully closed region Ac. The initial motion mask section M can be set to a length (a value Mc for the fully closed region) that can reliably prevent erroneous detection. As a result, it is possible to suppress a decrease in detection performance of foreign matter entrainment.

  (2) The fully closed region Ac is set to a value corresponding to the insertion width of the window glass WG with respect to the weather strip WS at the upper part of the window frame. That is, in a state where the window glass WG is outside the fully closed region Ac, the window glass WG is not in contact with the weather strip WS. As a result, even if the initial motion mask section M (normal value Ms) when the opening operation start position is outside the fully closed region Ac is set to a value that does not take into account the influence of the weather strip WS, the initial motion mask section M Thus, it is possible to prevent erroneous detection of foreign matter entrainment.

In addition, you may change the said embodiment as follows.
In the above embodiment, the value obtained by adding the constant correction value Ma to the normal value Ms is set as the value Mc for the fully closed region, but the correction value Ma does not necessarily have to be a constant value. For example, as shown in FIG. In this way, the correction value Ma may be changed according to the position of the window glass WG within the fully closed region Ac. As shown in FIG. 4, when it is determined in step S2 that the window glass WG is in the fully closed region Ac, the control circuit 21 sets a value based on the position of the window glass WG to the correction value Ma (step S11). Specifically, when the window glass WG is at the fully closed position Pc, the control circuit 21 sets the correction value Ma to the maximum value (for example, 10 as the pulse edge count), and the position of the window glass WG is at the fully closed position Pc. The correction value Ma is set to be smaller from the maximum value as it moves away from the opening direction side. Thereafter, the control circuit 21 sets a value obtained by adding the correction value Ma set in step S11 and the normal value Ms in the initial movement mask section M (step S12).

  According to this configuration, the initial mask section M is set longer as the window glass WG is closer to the fully closed position Pc (that is, the contact width with the weather strip WS is larger). Thereby, it is possible to set the initial movement mask section M to a more appropriate appropriate value.

  Further, the correction value Ma may be changed according to the voltage value V applied to the motor 11 at the time of the previous closing operation of the window glass WG (the closing operation that has entered the fully closed region Ac). For example, as shown in FIG. 5, when the control circuit 21 determines in step S2 that the window glass WG is in the fully closed region Ac, the control circuit 21 sets a value based on the applied voltage value V at the previous window glass WG closing operation. The correction value Ma is set (step S21). Specifically, the control circuit 21 stores the applied voltage value V when the window glass WG passes, for example, the boundary position Pb in the memory (not shown) during the closing operation of the window glass WG, and stores the voltage value in step S21. The applied voltage value V is referred from the memory. The control circuit 21 sets a larger value as the correction value Ma as the applied voltage value V is higher.

  According to this configuration, the position of the window glass WG in the fully closed region Ac and the backlash state of the drive system including the motor 11 and the window regulator vary depending on the applied voltage value V at the previous closing operation. By setting the correction value Ma based on the value V, the initial motion mask section M can be set to a more appropriate appropriate value.

  In the example shown in FIG. 5, the control circuit 21 sets the value based on the applied voltage value V as the correction value Ma after the opening operation of the operation switch 24 (step S1). However, the control circuit 21 is particularly limited to this. It is not a thing. For example, when the closing operation of the window glass WG is stopped, the initial movement mask section M (correction value Ma) at the next opening operation may be set in advance based on the applied voltage value V.

  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 boundary position Pb that determines the range of the fully closed area Ac is set to a position at which the window glass WG to be closed starts to contact the weather strip WS, but is not particularly limited thereto. The boundary position Pb may be set closer to the fully closed position Pc than the position at which the boundary position Pb starts to contact the weather strip WS. That is, the fully closed region Ac may be set to a length shorter than the length corresponding to the insertion width of the window glass WG with respect to the weather strip WS.

  In the above-described embodiment, the power window device 10 using the X arm type window regulator is applied, but the power window device using a wire regulator such as a wire type or a single arm type may be applied.

  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) an opening / closing control unit for controlling the opening / closing operation of the vehicle window based on the driving force of the motor;
An entrainment determining unit that determines that foreign matter is entrained by the vehicle window when a characteristic value of the motor that fluctuates in accordance with a load variation applied to the vehicle window during opening operation is equal to or greater than a determination threshold; The 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,
In the initial mask section from the start of the opening operation of the vehicle window, a regulation unit that regulates the entrainment prevention control by the opening / closing control unit even if the characteristic value of the motor is equal to or greater than the determination threshold value;
An initial motion mask section setting unit that sets a length of the initial motion mask section to be used in the next opening operation of the vehicle window based on a voltage value applied to the motor during the closing operation of the vehicle window. A vehicle window opening and closing device.

  According to this configuration, the size of the backlash of the drive system including the motor (that is, the length of the idle running section at the start of operation) changes depending on the voltage applied to the motor when the vehicle window is closed. By setting the length of the initial motion mask section according to the voltage value, the initial motion mask section can be set to a more appropriate appropriate value.

  DESCRIPTION OF SYMBOLS 10 ... Power window apparatus (vehicle window opening / closing apparatus), 11 ... Motor, 21 ... Control circuit (opening / closing control part, entrainment determination part, regulation part, initial movement mask area setting part), WG ... Window glass (vehicle window), WS ... Weather Strip.

Claims (4)

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,
In the initial mask section from the start of the opening operation of the vehicle window, a regulation unit that regulates the entrainment prevention control by the opening / closing control unit even if the characteristic value of the motor is equal to or greater than the determination threshold value;
When the opening operation start position of the vehicle window is outside the fully closed region including the fully closed position, a normal value is set in the initial movement mask section, and the opening operation start position of the vehicle window is within the fully closed region. In this case, the vehicle window opening and closing apparatus includes: an initial motion mask section setting unit that sets a value for a fully closed region larger than the normal value in the initial motion mask section. The vehicle window opening and closing device according to claim 1,
The vehicle window opening and closing device characterized in that the fully closed region is set in accordance with an insertion width of the vehicle window with respect to a weather strip provided in a window frame. In the vehicle window opening and closing device according to claim 1 or 2,
The initial movement mask section setting unit sets the size of the value for the fully closed region based on the position of the vehicle window in the fully closed region. In the vehicle window opening and closing device according to claim 1 or 2,
The vehicle window opening and closing device characterized in that the initial movement mask section setting unit sets the magnitude of the value for the fully closed region based on a voltage value applied to the motor when the vehicle window is closed.