JP5406488B2 - Power door - Google Patents

Description

  The present invention relates to a power door, and more particularly to a power door that opens and closes a door opening by driving a door body with a drive mechanism having a power source.

  In one-box and minivan vehicles, the rear side door is often a power slide door that operates with the power of a motor or the like. In a power slide door, the door body is pulled out of the door opening and opened by power of a motor or the like, and is inserted into the door opening and closed.

  The power slide door is provided with an electrostatic capacity type touch sensor, and when a human body or the like is caught, the power slide door is reversed to avoid the human body or the like (for example, patent document) 1).

  One type of capacitive touch sensor is one in which another electrode is provided inside a flexible hollow electrode. This touch sensor detects the pinching based on the change in capacitance when the human body with bare skin contacts the outer electrode, and at the same time the electrostatic force when the outer electrode deformed by the contact of the human body with clothes contacts the inner electrode. The pinching is detected based on the change in the capacity (see, for example, Patent Document 2).

As another type of touch sensor, a resistance type touch sensor is used. The resistance-type touch sensor has a plurality of conductors arranged opposite to each other on the inner wall of a flexible tube, and utilizes a change in resistance when the conductors come into contact with each other due to deformation of the tube accompanying pinching. Such a touch sensor is provided on the door body side or the door opening side (see, for example, Patent Documents 3-8).
Japanese Patent Laying-Open No. 2004-219311 (paragraph numbers 0015-0016, FIGS. 1 and 2) JP 2007-108003 (paragraph numbers 0033-0039, 0042-0043, 0045-0048, FIGS. 3, 4, and 5) JP-A-11-182136 (paragraph number 0037, FIGS. 1 and 2) Japanese Patent Laying-Open No. 2007-83927 (paragraph numbers 0015-0021, FIGS. 3, 4, and 5) Japanese Patent Laying-Open No. 2003-220837 (paragraph numbers 0011-0012, FIGS. 1, 2 and 4) Japanese Patent Laid-Open No. 11-2222036 (paragraph numbers 0008-0011, FIGS. 1, 2 and 3) Japanese Patent Laid-Open No. 11-210320 (paragraph number 0034, FIGS. 1, 2 and 6) JP-A-9-264094 (paragraph numbers 0025-0027, 0042, FIGS. 1, 3, 9)

  When the main switch is turned off during the opening / closing of the power slide door, or when the power slide door stops halfway after the pinch detection is continued a plurality of times, the motor drive circuit is turned off.

  When the motor drive circuit is off, the door body is free, and therefore, when the vehicle is tilted, there is a possibility that it will start moving due to its own weight and pinch will occur. Even when the vehicle is not tilted, there is a risk that pinching urged by inertia or power assist may occur when the door body is opened and closed manually.

  Therefore, an object of the present invention is to realize a power door that can avoid pinching even when the door body is in a free state.

The invention according to claim 1 as means for solving the problem is to drive the door body by a drive mechanism having a power source to open and close the door opening, and to insert foreign matter based on the detection signal of the touch sensor. A speed detection means for detecting the movement speed of the door body , and the door body starts to move when the door body is not driven by the drive mechanism, and the speed detection value of the speed detection means is Stop means for stopping the door body when a predetermined threshold value is exceeded, and making the door body unmovable based on a pinch detection signal of the touch sensor when the door body is not driven by the drive mechanism. It is a power door characterized by comprising a safety means.

The invention according to claim 2 as means for solving the problem is to drive the door body by a drive mechanism having a power source to open and close the door opening, and to insert foreign matter based on the detection signal of the touch sensor. A speed detection means for detecting the movement speed of the door body , and the door body starts to move when the door body is not driven by the drive mechanism, and the speed detection value of the speed detection means is Stop means for stopping the door main body when a predetermined threshold is exceeded, and when the door main body is detected based on a pin detection signal of the touch sensor in a state where the door main body is not driven by the drive mechanism It is a power door characterized by comprising reversing means for moving a predetermined distance in a direction opposite to the moving direction.

The invention according to claim 3 as means for solving the problem is that the safety means or the reversing means is such that the speed detection value of the speed detection means in a state in which the door body is not driven by the drive mechanism has the threshold value. The power door according to claim 1 or 2, wherein the power door operates when not exceeding .

According to the first aspect of the present invention, the power door that opens and closes the door opening by driving the door body with a drive mechanism having a power source and avoids foreign object pinching based on the pin detection signal of the touch sensor, When the door main body starts to move in a state where the door main body is not driven by the drive mechanism and the speed detection value of the speed detection means exceeds a predetermined threshold value in the state where the door main body is not driven by the driving mechanism. The door main body includes stop means for stopping the door main body and safety means for making the door main body immovable based on a pinch detection signal of the touch sensor when the door main body is not driven by the drive mechanism. It is possible to realize a power door that can avoid pinching even when is in a free state.

According to the second aspect of the present invention, the power door that opens and closes the door opening by driving the door body with a drive mechanism having a power source and avoids foreign object pinching based on the pin detection signal of the touch sensor, When the door main body starts to move in a state where the door main body is not driven by the drive mechanism and the speed detection value of the speed detection means exceeds a predetermined threshold value in the state where the door main body is not driven by the driving mechanism. Stop means for stopping the door body, and in advance in a direction opposite to the moving direction at the time of pinching detection based on a pinching detection signal of the touch sensor when the door body is not driven by the drive mechanism. Since it has reversing means to move it by a predetermined distance, it is possible to realize a power door that can avoid pinching even when the door body is in a free state. Can.

According to the invention of claim 3 , the safety means or the reversing means operates when the speed detection value of the speed detection means in a state where the door body is not driven by the drive mechanism does not exceed the threshold value. Therefore, it is possible to efficiently avoid pinching.

The best mode for carrying out the invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the best mode for carrying out the invention.
FIG. 1 schematically shows the appearance of the left side of a vehicle equipped with a power slide door. As shown in FIG. 1, the vehicle 100 is equipped with a power slide door 200. The power slide door 200 is an example of the best mode for carrying out the invention. The configuration of the power slide door 200 shows an example of the best mode for carrying out the invention related to the power slide door. Hereinafter, the power slide door is also simply referred to as a slide door.

  The upper portion, the lower portion, and the rear portion of the slide door 200 engage with guide rails 112, 114, and 116 provided on the upper portion, the lower portion, and the rear portion of the body 110 of the vehicle 100, respectively. The sliding door 200 opens and closes the door opening on the side surface of the body 110 by a reciprocating sliding motion to the rear along the guide rails 112, 114, and 116. The sliding door 200 is opened and closed by a known opening / closing mechanism having a power source such as a motor.

  FIG. 2 schematically shows the configuration of the sliding door and the door opening. FIG. 2 corresponds to an AA cross-sectional view of vehicle 100 shown in FIG. In FIG. 2, the top is the outdoor, the bottom is the indoor, the left is the front, and the right is the back.

  As shown in FIG. 2, the slide door 200 is closed in a state where the slide door 200 is fitted in the door opening 300 of the body 110. In this state, the outer surface of the slide door 200 has no step with respect to the outer surface of the body 110 and is so-called flush. Further, the door trim 202 on the inner surface of the slide door 200 is also flush with the inner surface of the body 110. Hereinafter, the door opening is also simply referred to as opening.

  The rear portion of the sliding door 200 is engaged with the guide rail 116 via the engaging member 204 in the opening 300. The engaging member 204 has a hinge on the slide door 200 side and a roller on the guide rail 116 side. The guide rail 116 obliquely enters the opening 300 from the outer surface of the body 110, and the roller of the engaging member 204 is positioned near the end of the oblique portion of the guide rail 116.

  The front portion of the sliding door 200 is engaged with the socket 118 by the boss 206 in the opening 300. The socket 118 is provided on the rear surface of the center pillar 120 of the body 110 in the opening 300.

  On the inner periphery of the opening 300, an opening flange 302 is provided on the indoor side. A weather strip 400 is provided at the front end of the opening flange 302. Hereinafter, the opening flange is also simply referred to as a flange.

  FIG. 3 schematically shows a detailed configuration of the weather strip 400. The weather strip 400 extends in a direction perpendicular to the paper surface. As shown in FIG. 3, the weather strip 400 includes an attachment member 402, a seal member 404, and a touch sensor 410. The attachment member 402 attaches the entire weather strip 400 to the distal end portion of the flange 302.

  The seal member 404 is provided on the outward surface of the attachment member 402. The seal member 404 is a tube-like hollow flexible body, and when the slide door 200 is completely closed, as shown in FIG. 2, the seal member 404 is in close contact with the panel portion of the slide door 200 and is slightly crushed to form a gap. Seal. The attachment member 402 and the seal member 404 are made of a non-conductive material. As the non-conductive material, for example, rubber or plastic is used.

  The touch sensor 410 is provided at the tip of the attachment member 402. The touch sensor 410 includes a first element 412 fixed to the tip of the attachment member 402 and a second element 414 fixed to the tip of the attachment member 402 so as to surround the first element 412.

  Both the first element 412 and the second element 414 are made of a conductive material. As the conductive material, for example, conductive rubber or conductive plastic is used. An electric wire may be embedded in the first element 412.

  The second element 414 has flexibility, and can be deformed when the foreign object comes into contact with the first element 412. In a state where there is no contact due to deformation or the like, the first element 412 and the second element 414 are in an insulated state.

  The touch sensor 410 is a capacitive touch sensor similar to that described in Patent Document 2, and detects pinching based on a change in capacitance when the human body with bare skin comes into contact with the outer electrode 414. At the same time, the pinching is detected based on the change in capacitance when the outer electrode 414 deformed by the contact of the human body of the clothes contacts the inner electrode 412.

  The touch sensor 410 is not limited to such a configuration, and a capacitive touch sensor similar to that described in Patent Document 1 or a resistance similar to that described in Patent Document 3-8. It may be a touch sensor of the type.

  FIG. 4 is a block diagram showing the configuration of the sliding door control system 1. As shown in FIG. 4, the slide door control system 1 has a microcomputer 10. The microcomputer 10 forms the center of the sliding door control system 1.

  Signals are input to the microcomputer 10 from the touch sensor input circuit 20, the main SW (switch) 30, the operation SW (switch) 40, and the door movement amount detection circuit 50. The microcomputer 10 controls the slide door 200 through the door opening / closing control circuit 60 by a predetermined program based on these input signals.

  An input signal from the touch sensor input circuit 20 is a pinching detection signal of the touch sensor 410. The microcomputer 10 recognizes whether a human body or the like is caught based on an input signal from the touch sensor input circuit 20.

  An input signal from the main SW 30 is a signal representing ON / OFF of the main SW 30. The main SW 30 is turned on / off by the passenger. The microcomputer 10 recognizes the input state of the main SW 30 based on the input signal from the main SW 30.

  The input signal from the operation SW 40 is a signal representing the operation state of the operation SW 40. The operation SW 40 is operated in the opening direction or the closing direction of the slide door 200 by the passenger. The microcomputer 10 recognizes the operation state of the operation SW 40 based on the input signal from the operation SW 40.

  An input signal from the door movement amount detection circuit 50 is a signal (door movement amount signal) indicating the movement amount of the slide door 200. The door movement amount signal is obtained, for example, as a count value of pulses generated with the rotation of the power motor. The pulse generator is composed of a combination of a permanent magnet and a Hall IC, for example. The door movement amount detection circuit 50 is an example of speed detection means in the present invention.

  The microcomputer 10 recognizes the movement amount of the slide door 200 based on the input signal from the door movement amount detection circuit 50. The microcomputer 10 also obtains the moving speed (door moving speed) of the slide door 200 from the change rate of the door moving amount.

  As for the door moving speed, two threshold values are set in advance and stored in the microcomputer 10. FIG. 5 shows an example of setting two threshold values. As shown in FIG. 5, a threshold A and a threshold B are set. The threshold value A is a threshold value that defines a boundary between the low speed and the medium speed of the door movement speed, and the threshold value B is a threshold value that defines a boundary between the medium speed and the high speed of the door movement speed.

  At speeds below the threshold A, the brake is turned off. At a speed equal to or higher than the threshold value B, the brake is turned on. Brake OFF and brake ON will be described later again.

  In the state where the main SW 30 is turned on, when the operation SW 40 is operated in the opening direction or the closing direction by the occupant, the motor 10 is controlled by the corresponding control command of the microcomputer 10 and the operation of the door opening / closing control circuit 60 based thereon. The sliding door 200 is opened / closed by the power of. That is, the sliding door is opened and closed in the power mode.

  If a human body or the like is caught during opening / closing of the sliding door in the power mode, the microcomputer 10 stops the sliding door 200 in the door opening / closing control circuit 60 based on the pinching detection signal input from the touch sensor input circuit 20. To avoid pinching and reversal.

  During operation in the power mode, when the main SW 30 is turned off or the pinch detection continues a plurality of times, the microcomputer 10 stops driving the slide door 200. By stopping the driving, the sliding door 200 enters a free state.

  The sliding door 200 in the free state may start to move under its own weight when the vehicle is inclined. Further, the sliding door 200 in the free state can be opened and closed manually. The opening and closing by human power may be accompanied by assist by the power of the motor.

  The microcomputer 10 performs the following control on the sliding door 200 in the free state. FIG. 6 shows a flowchart of an example of the control operation. This control operation is repeatedly performed at intervals of 200 ms, for example. The same applies to other examples described later.

  As shown in FIG. 6, in step S01, it is determined whether or not the slide door 200 is in an intermediate position other than the door fully closed or fully opened. If the determination is no, the brake is turned off in step S08. The free state of the slide door 200 is continued by turning off the brake.

  The brake is turned off by, for example, turning off a power transmission clutch. Alternatively, when the regenerative brake is used, it is performed by making the power regenerative circuit open loop, and when using the dedicated mechanical brake, it is performed by deactivating it. The same applies hereinafter.

  If the determination in step S01 is yes, it is determined in step S02 whether the door moving speed is equal to or less than a threshold value A. If the determination is yes, the brake is turned off in step S08, and the free state is continued.

  If the determination in step S02 is no, in step S03, input from the touch sensor is read, and in step S04, it is determined whether pinching is detected by the touch sensor. If the determination is yes, the brake is turned on in step S06. When the brake is turned on, the slide door 200 becomes immovable. Since the sliding door 200 becomes immovable, the pinching is prevented.

  The touch sensor 410, the touch sensor input circuit 20, the microcomputer 10, and the door opening / closing control circuit 60 related to the control operations in steps S03, S04, and S06 are examples of safety means in the present invention.

  For example, the brake is turned on by turning on a clutch of a power transmission system. Or when using a regenerative brake, it carries out by making a power regeneration circuit into a closed loop, and when using a special mechanical brake, it carries out by operating it. The same applies hereinafter.

  If the determination in step S04 is no, it is determined in step S05 whether the door moving speed is equal to or higher than a threshold value B. If the determination is yes, in step S06, the brake door is turned on and the slide door 200 is made immovable. The microcomputer 10 and the door opening / closing control circuit 60 related to the control operations in steps S05 and S06 are an example of a stopping unit in the present invention.

  If the determination in step S05 is no, the brake state is maintained in step S07. As a result, when the brake is turned on before that time, the brake is kept on, and when the brake is turned off, the brake is kept off.

  In this way, even when the sliding door 200 in the free state starts to move for some reason, the pinch avoidance is performed based on the pinch detection signal of the touch sensor 410. Further, when the moving speed of the slide door 200 increases to some extent, the brake is applied to prevent danger even if pinching is not detected.

  FIG. 7 shows a flowchart of another example of the control operation. In this flowchart, the same steps as those in the flowchart of FIG. 6 are denoted by the same reference numerals and description thereof is omitted.

  The control operation of FIG. 7 differs from the control operation of FIG. 6 in that when the determination in step S04 is yes, the brake is turned off after a slight movement in the opposite direction to the pinching in step S09. In step S09, after slightly moving in the opposite direction to the pinching, the brake door is turned off, so that the slide door 200 is inverted by a predetermined distance such as 50 mm. As a result, the human body or the like caught by the slide door 200 is released and safety is increased.

  The touch sensor 410, the touch sensor input circuit 20, the microcomputer 10, and the door opening / closing control circuit 60 related to the control operations in steps S03, S04, and S09 are examples of the inverting means in the present invention.

  FIG. 8 shows a flowchart of another example of the control operation. As shown in FIG. 8, in step S <b> 101, it is determined whether or not the slide door 200 is in an intermediate position other than the door fully closed or fully opened. If the determination is no, the brake is turned off in step S108. The free state of the slide door 200 is continued by turning off the brake.

  If the determination in step S101 is yes, it is determined in step S102 whether the door moving speed is equal to or less than a threshold value A. If the determination is yes, the brake is turned off in step S108 and the free state is continued.

  If the determination in step S102 is no, it is determined in step S103 whether the door moving speed is greater than or equal to a threshold value B. If the determination is yes, in step S106, the brake door is turned on and the slide door 200 is made immovable. The microcomputer 10 and the door opening / closing control circuit 60 related to the control operations in steps S103 and S106 are an example of a stopping unit in the present invention.

  If the determination in step S103 is no, in step S104, input from the touch sensor is read, and in step S105, it is determined whether or not pinching is detected by the touch sensor. If the determination is yes, the brake is turned on in step S106. When the brake is turned on, the slide door 200 becomes immovable and is not caught.

  The touch sensor 410, the touch sensor input circuit 20, the microcomputer 10, and the door opening / closing control circuit 60 related to the control operations in steps S104, S105, and S106 are examples of safety means in the present invention.

  If the determination in step S105 is no, the brake state is maintained in step S107. As a result, when the brake is turned on before that time, the brake is kept on, and when the brake is turned off, the brake is kept off.

  In this way, when the sliding door 200 in the free state starts to move for some reason and the moving speed becomes equal to or higher than the threshold value B, the brake is applied to prevent danger. Further, only when the moving speed of the slide door 200 is not equal to or higher than the threshold B, the pinch avoidance is performed based on the pinch detection signal of the touch sensor 410.

  FIG. 9 shows a flowchart of another example of the control operation. In this flowchart, the same steps as those in the flowchart of FIG. 8 are denoted by the same reference numerals and description thereof is omitted.

  The control operation of FIG. 9 differs from the control operation of FIG. 8 in that when the determination in step S105 is yes, the brake is turned off after a slight movement in the opposite direction to the pinching in step S109. In step S109, after slightly moving in the opposite direction to the pinching, the slide door 200 is reversed by a predetermined distance, for example, 50 mm, by turning off the brake. As a result, the human body or the like caught by the slide door 200 is released and safety is increased.

  The touch sensor 410, the touch sensor input circuit 20, the microcomputer 10, and the door opening / closing control circuit 60 related to the control operations in steps S104, S105, and S109 are examples of the inverting means in the present invention.

  The power door is not limited to a slide-type power door, and may be a front door or a back door that opens and closes by a swing. The touch sensor may be provided on the door opening side.

  As mentioned above, the power door for the vehicle has been exemplified as the best mode for carrying out the invention. However, the power door of the present invention is not limited to the vehicle, but is used for power doors for ships, aircrafts, etc., or indoors and outdoors. It may be a power door for an appropriate use such as a power door to be used. The power door may be a power door of a luggage trunk.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view of a vehicle equipped with a power slide door as an example of the best mode for carrying out the invention. It is a figure which shows the structure of a slide door and a door opening. It is a figure which shows the structure of a touch sensor. It is a block diagram which shows the structure of a slide door control system. It is a figure which shows the relationship between two threshold values. It is a flowchart which shows operation | movement of a sliding door control system. It is a flowchart which shows operation | movement of a sliding door control system. It is a flowchart which shows operation | movement of a sliding door control system. It is a flowchart which shows operation | movement of a sliding door control system.

Explanation of symbols

1: Slide door control system 10: Microcomputer 20: Touch sensor input circuit 30: Main SW
40: Operation SW
50: Door movement amount detection circuit 60: Door opening / closing control circuit 100: Vehicle 110: Body 112, 114, 116: Guide rail 118: Socket 120: Center pillar 200: Power slide door 202: Door trim 204: Engaging member 206: Boss 300: Door opening 302: Opening flange 400: Weather strip 402: Mounting member 404: Seal member 410: Touch sensor 412: Inner electrode 414: Outer electrode

Claims (3)

A power door that opens and closes the door opening by driving the door body with a drive mechanism having a power source, and avoids foreign object pinching based on the pinch detection signal of the touch sensor,
Speed detecting means for detecting the moving speed of the door body;
In a state where the door body is not driven by the drive mechanism, the door body starts to move , and when the speed detection value of the speed detection means exceeds a predetermined threshold, the stop means for stopping the door body,
A power door comprising safety means for making the door body immovable based on a pinch detection signal of the touch sensor in a state where the door body is not driven by the drive mechanism. A power door that opens and closes the door opening by driving the door body with a drive mechanism having a power source, and avoids foreign object pinching based on the pinch detection signal of the touch sensor,
Speed detecting means for detecting the moving speed of the door body;
In a state where the door body is not driven by the drive mechanism, the door body starts to move , and when the speed detection value of the speed detection means exceeds a predetermined threshold, the stop means for stopping the door body,
Reversing means for moving the door body by a predetermined distance in a direction opposite to the moving direction at the time of pinching detection based on the pinching detection signal of the touch sensor in a state where the door body is not driven by the driving mechanism. A power door characterized by comprising. The said safety | security means or the said inversion means act | operates when the speed detection value of the said speed detection means does not exceed the said threshold value in the state in which the said door main body is not driven with the said drive mechanism. 2. The power door according to 2.

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