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JP-7856543-B2 - Opening/closing control device

JP7856543B2JP 7856543 B2JP7856543 B2JP 7856543B2JP-7856543-B2

Inventors

  • 田中 壮稔
  • 渡辺 悦朗

Assignees

  • 株式会社ユーシン

Dates

Publication Date
20260511
Application Date
20221007

Claims (8)

  1. A drive unit that drives an opening and closing mechanism for opening and closing the opening of the vehicle body, A distance detection unit that detects the detection distance, which is the distance from the opening/closing body to the object to be detected, When a command to start the opening or closing operation of the opening/closing body is input, a control unit controls the drive unit to operate the opening/closing body, A unit for detecting the operating position of the opening/closing body, Equipped with, The control unit, When the start command is input, the distance detection unit determines whether the detected object is a moving object or a stationary object based on the detection result, If the object to be detected is a stationary object, a first collision determination distance is set as the collision determination distance to be compared with the detection distance. If the object to be detected is the moving object, a second collision determination distance longer than the first collision determination distance is set as the collision determination distance. If the detection distance is greater than the collision detection distance, the drive unit is controlled to continue the operation of the opening/closing body; if the detection distance is less than the collision detection distance, the drive unit is controlled to stop the operation of the opening/closing body. The collision detection distance is set such that the closer the operating position of the opening/closing body is to the maximum extension position where the amount of extension of the opening/closing body from the vehicle body is maximum within the movable range of the opening/closing body, the larger the collision detection distance becomes. The second collision detection distance is set such that the closer the operating position of the opening/closing body is to the maximum extension position, the greater the amount by which the second collision detection distance exceeds the first collision detection distance. Opening/closing mechanism control device.
  2. A drive unit that drives an opening and closing mechanism for opening and closing the opening of the vehicle body, A distance detection unit that detects the detection distance, which is the distance from the opening/closing body to the object to be detected, When a command to start the opening or closing operation of the opening/closing body is input, a control unit controls the drive unit to operate the opening/closing body, A unit for detecting the operating position of the opening/closing body, Equipped with, The control unit, When the start command is input, the detection unit determines whether the detected object is a moving object or a stationary object based on the detection result of the distance detection unit. If the object to be detected is a stationary object, a first collision determination distance is set as the collision determination distance to be compared with the detection distance. If the object to be detected is the moving object, a second collision determination distance longer than the first collision determination distance is set as the collision determination distance. If the detection distance is greater than the collision detection distance, the drive unit is controlled to continue the operation of the opening/closing body; if the detection distance is less than the collision detection distance, the drive unit is controlled to stop the operation of the opening/closing body. If the object to be detected is a stationary object, the first collision determination distance is set such that it is varied according to the amount of overhang and the difference between the amount of overhang and the first collision determination distance remains constant. Open Enclosure control device.
  3. A drive unit that drives an opening and closing mechanism for opening and closing the opening of the vehicle body, A distance detection unit that detects the detection distance, which is the distance from the opening/closing body to the object to be detected, When a command to start the opening or closing operation of the opening/closing body is input, a control unit controls the drive unit to operate the opening/closing body, A unit for detecting the operating position of the opening/closing body, Equipped with, The control unit, When the start command is input, the detection unit determines whether the detected object is a moving object or a stationary object based on the detection result of the distance detection unit. If the object to be detected is a stationary object, a first collision determination distance is set as the collision determination distance to be compared with the detection distance. If the object to be detected is the moving object, a second collision determination distance longer than the first collision determination distance is set as the collision determination distance. If the detection distance is greater than the collision detection distance, the drive unit is controlled to continue the operation of the opening/closing body; if the detection distance is less than the collision detection distance, the drive unit is controlled to stop the operation of the opening/closing body. A first table defining the correspondence between the operating position and the first collision detection distance, and a second table defining the correspondence between the operating position and the second collision detection distance are stored in advance. If the object to be detected is a stationary object, the first collision determination distance is set according to the operating position by referring to the first table. If the object to be detected is the moving object, the second collision determination distance is set according to the operating position by referring to the second table. Opening/closing mechanism control device.
  4. The first or second table is, The release time table that is referenced when the start command for the release operation is input, The opening/closing control device according to claim 3 , further comprising: a closing table which is referenced when the start command for the closing operation is input.
  5. The control unit, When the aforementioned start command is input, it is determined whether the conditions for starting the collision prevention process, which stops the operation of the opening/closing body according to the detected distance, have been met. The opening/closing body control device according to any one of claims 1 to 4 , wherein when the aforementioned start condition is met, the drive unit is controlled based on the comparison result between the detection distance and the collision determination distance.
  6. The opening/closing body control device according to claim 5 , wherein the starting condition includes the condition that the detection distance is greater than a processing start distance that is longer than the collision determination distance.
  7. The opening/closing body control device according to claim 6 , wherein if the detection distance is smaller than the processing start distance at the time of input of the start command, the start condition is met when the detection distance subsequently becomes larger than the processing start distance.
  8. When the start condition is met, the control unit determines whether the termination condition for the collision prevention process is met. The termination conditions include the condition that the operating position of the opening/closing body has reached a predetermined termination position, or the condition that a predetermined time has elapsed since the start command was input. The opening/closing body control device according to claim 5 , wherein the termination position is set between the fully closed position and the fully open position, and the predetermined time is shorter than the time required for the opening/closing body to move between the fully closed position and the fully open position.

Description

This invention relates to an opening/closing mechanism control device. For example, Patent Document 1 discloses a control device that opens a vehicle's tailgate from a closed position to an open position by operating a motor. The tailgate is equipped with an obstacle sensor. If the obstacle sensor detects an obstacle during the tailgate's opening operation, the control device stops the motor's operation and, consequently, the tailgate's opening operation, in order to avoid a collision between the tailgate and the obstacle. Japanese Patent Publication No. 2009-108556 A left side view showing a vehicle equipped with an opening/closing control device according to the first embodiment.A magnified view of a portion of Figure 1.Figure 1 is a perspective view showing the rear of the vehicle.A schematic block diagram showing the configuration of the opening/closing control device according to the first embodiment.A plan view showing the distance sensor.A schematic diagram illustrating the conditions for initiating collision avoidance processing.A schematic diagram illustrating the conditions for initiating collision avoidance processing.A graph illustrating the table used to set the collision detection distance during the release operation.A graph illustrating the table used to set the collision detection distance during the closing operation.A flowchart showing part of the process performed by the opening/closing control device shown in Figure 4.A flowchart showing part of the process performed by the opening/closing control device shown in Figure 4.A schematic block diagram showing the configuration of the opening/closing control device according to the second embodiment.A flowchart showing part of the process performed by the opening/closing control device shown in Figure 11. The embodiments of the present invention will be described below with reference to the drawings. The same or corresponding elements are denoted by the same reference numerals throughout the drawings to avoid redundant detailed descriptions. Unless otherwise specified, it is assumed that the ground on which the vehicle is in contact is horizontal; however, directions in the following description may be appropriately changed depending on the slope of the ground. (First Embodiment) Referring to Figures 1 to 3, the opening/closing control device 100 according to this embodiment controls the opening and closing operations of an opening/closing body provided on a vehicle 1 such as a four-wheeled automobile. The vehicle 1 includes, as an example of an opening/closing body, a back door 4 that opens and closes an opening 3 provided at the rear of the vehicle body 2. The back door 4 operates by changing its operating position within a movable range between a fully closed position θ0 (see solid line in Figures 1 and 2) that closes the opening 3 and a fully open position θF (see dashed line in Figures 1 and 2) that opens the opening 3. The fully closed state is when the back door 4 is positioned at the fully closed position θ0. The fully open state is when the back door 4 is positioned at the fully open position θF, as shown in Figure 3. The opening operation is a movement in the opening direction toward the fully open position θF, and once started, it inherently continues until the fully open state. The closing operation is a movement in the closing direction toward the fully closed position θ0, and once started, it inherently continues until the fully closed state. The opening operation typically starts in the fully closed state, and the closing operation typically starts in the fully open state. The back door 4 is attached to the upper edge of the opening 3 via a hinge 5, allowing it to rotate around an axis A extending in the vehicle width direction. In this case, the opening direction is counterclockwise when viewed from the left side, and the operating position of the back door 4 can be quantitatively expressed by the rotation angle (deg) around axis A. The back door 4, in its fully closed position, is tilted so that it extends further back as it moves downward from axis A. When the back door 4 moves from the fully closed position θ0 to the open position, the amount of protrusion B from the vehicle body 2 increases. The protrusion amount B is the distance in the vehicle-length direction from the rearmost end face of the vehicle body 2 to the tip of the back door 4. When the back door 4 is positioned at its maximum protrusion position θM, between the fully closed position θ0 and the fully open position θF, the back door 4 extends parallel to the ground G from axis A, and the protrusion amount B is at its maximum within the back door 4's range of motion. The back door 4 can move further in the open direction from the maximum protrusion position θM to the fully open position θF. This causes the opening 3 to open wider, and the protrusion amount B decreases. Here, the fully closed position θ0 is assumed to be 0 degrees, representing the minimum or re