JP2005248485A - Door closing device and its control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance an operational feeling of a door closing device, while preventing a malfunction of a driving source caused when opening a fully closed door. <P>SOLUTION: A sliding door of a vehicle is provided with the door closing device having a lock mechanism having a latch and a ratchet, and an actuator for driving the latch up to a full latch position from a half latch position. A control device of this door closing device is constituted so as to operate the actuator when detecting that the sliding door transfers to a half door state from an opening state by a detecting signal from a half latch switch and a ratchet switch. The control device prohibits state detection of the sliding door when operating a door knob, and thereby prohibits operation of the actuator regardless of a state change of the sliding door when opening the sliding door of the full closure state by operating the door knob, and starts the state detection of the sliding door after detection prohibiting time passes after stopping operation of the door knob. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention includes a latch mechanism that includes a latch and a ratchet, holds the vehicle door in a half door position and a fully closed position, and allows the door to be opened by releasing the engagement of the ratchet by operating the door opening means, and the latch The present invention relates to a door closing device having a drive source that operates when the lever moves from the unlatched position to the half latched position and moves the latch to the full latched position, and automatically closes the door closed to the half door position.

  Vehicles such as automobiles are provided with doors for passengers to get on and off and to load and unload luggage, and as such doors, for example, a hinge type that is often used for doors for getting on and off, back doors, etc. And sliding doors provided on the side of vehicles such as wagon cars and one-box cars.

  Such a door is provided with a lock mechanism, and the door is held in a closed state by the lock mechanism. As this locking mechanism, a type in which a rotatable latch is rotationally engaged with a striker fixed to a vehicle body is known. In this case, when the door is closed, the striker is inserted into the latch engaging groove in the unlatched position. Enters and the latch is rotated to the full latch position. The ratchet is engaged with the latch that has rotated to the full latch position, whereby the rotation of the latch in the unlatching direction is restricted and the door is held in the fully closed position. The ratchet is also engaged with the latch when it is in the half latch position. In this case, the door is held in the half door position.

  On the other hand, the door is provided with a door knob connected to the ratchet, and the engagement of the ratchet with the latch can be released by operating the door knob. That is, when the door held in the fully closed position or the half door position is opened, the engagement of the ratchet with the latch is released by operating the door knob. As a result, the latch can rotate in the unlatching direction and the door can be opened.

  In such a lock mechanism, when the operation force for closing the door is small, the door may be in a half-door state. In order to close the door to the fully closed position from this state, it is necessary to operate the door again, which is inconvenient. It is. For this reason, for example, the lock mechanism shown in Patent Document 1 is provided with a door closing device called a door closer, and when the latch rotates from the unlatched position to the half-latched position, the latch is forced by an actuator using an electric motor or the like as a drive source. Therefore, it is driven to the full latch position. Thus, the door closed to the half door position is automatically closed to the fully closed position by the actuator, and the operation of closing the door is facilitated.

  The door closing device includes a half latch switch that detects that the latch is in the half latch position, a full latch switch that detects that the latch is in the full latch position, and a ratchet switch that detects that the ratchet is engaged with the latch. The control device for controlling the actuator can detect the open state of the door and the half-door state based on detection signals from these switches. For example, the door open state is detected when both the half latch switch and the ratchet switch are OFF, and the half door state is detected when either the half latch switch or the ratchet switch is ON. When both the ratchet switches are turned on, the fully closed state is detected. In this case, when the door is changed from the open state to the half-door state, the ratchet switch is set to be turned ON by a predetermined distance before the half-latch switch. The condition is detected.

Then, the control device starts the operation of the actuator when the half door state is detected during the recognition of the door open state, and thereby the door moves in the closing direction to enter the half door state. Only when the door is closed.
Japanese Patent Laid-Open No. 9-228736

  However, in such a door closing device, the ratchet switch is turned off regardless of the state of the door in conjunction with the operation of the door knob, so that the door knob is operated to open the fully closed door and the door is moved in the opening direction. Immediately after the door is moved to the position where the half-latch switch is turned off, both the ratchet switch and the half-latch switch are turned off and the door is in the half-door state. Will be recognized. When the operation of the door knob is stopped from this state, the ratchet switch is turned on in conjunction with this, so that the control device erroneously recognizes that the door has shifted from the open state to the half-door state and operates the actuator. It will be. Therefore, although the door is being opened, the door is closed from the half-door state to the fully-closed position, which makes the operator feel uncomfortable.

  An object of the present invention is to prevent malfunction of a drive source that occurs when a fully closed door is opened, and to enhance the operational feeling of the door closing device.

  The door closing device of the present invention includes a latch and a ratchet, holds the vehicle door in a half door position and a fully closed position, and allows the ratchet to be released by operating the door opening means to open the door. A door closing device that automatically closes the door closed to the half-door position, the locking mechanism having a locking mechanism for moving the latch from the half-latch position to the full-latch position. Half latch detection means for detecting that the latch position has been reached, ratchet detection means for detecting that the ratchet is engaged with the latch, and based on detection signals of the half latch detection means and the ratchet detection means When the door is in an open state or a half-door state, the drive source is detected when the door transitions from the open state to the half-door state. Control means for actuating, and when the door opening means is operated and the door shifts from a fully closed state to a half door state, activation of the drive source is prohibited regardless of the state of the door. To do.

  The door closing device according to the present invention is characterized in that when the door opening means is operated, the control means prohibits detection of the door state.

  The door closing device according to the present invention is characterized in that the detection of the state of the door by the control means is started after the detection prohibition time has elapsed after the operation of the door opening means is stopped.

  The door closing device according to the present invention is characterized in that the door opening means is a door knob provided on the door and connected to the ratchet and interlocked with the ratchet.

  A control device for a door closing device according to the present invention includes a latch and a ratchet, holds a vehicle door in a half door position and a fully closed position, and releases the engagement of the ratchet by operating a door opening means. A door closing device used for a door closing device having a lock mechanism that can be opened and a drive source that shifts the latch from a half latch position to a full latch position and that automatically closes the door closed to the half door position. A control device of the apparatus, wherein the latch is based on a detection signal of a half latch detection means for detecting that the latch is in a half latch position and a ratchet detection means for detecting that the ratchet is engaged with the latch. Detecting that the door is in an open state or a half-door state, and operating the drive source when the door transitions from the open state to the half-door state. Rutotomoni, the door the door opening means is operated when a transition from the fully closed state to the half door status and inhibits the activation of the driving source regardless of the state of the door.

  The control device for a door closing device according to the present invention is characterized in that the door state detection is prohibited when the door opening means is operated.

  The control device for a door closing device according to the present invention is characterized in that the detection of the door state is started after the detection prohibition time has elapsed since the operation of the door opening means was stopped.

  The control device for a door closing device according to the present invention is characterized in that the door opening means is a door knob provided on the door and connected to the ratchet and interlocked with the ratchet.

  According to the present invention, when the fully closed door is opened, the activation of the drive source is prohibited. Therefore, it is possible to prevent the drive source from malfunctioning and closing the door to the fully closed position. Therefore, the door is not actuated in a direction contrary to the operator's intention, and the operational feeling of the door closing device is enhanced.

  Further, according to the present invention, when the door opening means is operated, the operation of the drive source is prohibited by prohibiting the detection of the door state, so that the door opening means and the ratchet detecting means are interlocked. The malfunction of the drive source in the door closing device of the present invention can be prevented without changing the mechanical structure of the door closing device.

  Furthermore, according to the present invention, since the door state detection is started after the detection prohibition time has elapsed since the operation of the door opening means is stopped, the operation timing of the door opening means and the detection timing of the ratchet detection means Even if an error occurs, the error can be absorbed and erroneous detection of the door state can be reliably prevented. Therefore, the operation reliability of the door closing device can be enhanced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a side view showing a vehicle provided with a door closing device according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram showing details around the door of the vehicle shown in FIG. 3 is a block diagram showing a control system of the door closing device shown in FIG. 2, and FIGS. 4 (a) to 4 (c) show lock mechanisms when the latches are in the unlatched position, the half latched position, and the full latched position, respectively. It is explanatory drawing which shows the operating state of an actuator.

  As shown in FIG. 1, a slide door 12 as a door is provided on a side portion of the vehicle 11. The slide door 12 is guided by a guide rail 13 fixed to the side surface of the vehicle 11 and can be opened and closed between a fully closed position indicated by a solid line in the figure and a fully open position indicated by a one-dot chain line in the figure.

  As shown in FIG. 2, the slide door 12 is provided with a roller assembly 12a. When the roller assembly 12a moves along the guide rail 13, the slide door 12 opens and closes in the vehicle front-rear direction. It is like that. Further, the vehicle front side of the guide rail 13 is bent toward the vehicle interior side, whereby the slide door 12 is drawn into the vehicle 11 and closed so as to be in the same plane as the vehicle side surface. ing.

  The sliding door 12 is provided with a door closing device 14, and the sliding door 12 closed to the half door position is automatically closed to the fully closed state by the door closing device 14.

  As shown in FIG. 3, the door closing device 14 includes a lock mechanism 15, an actuator 16, and a control device 17. The lock mechanism 15 and the actuator 16 are unitized as a closer mechanism 18 and are arranged at the vehicle front side end of the slide door 12 as can be seen from FIG. The control device 17 is disposed inside the slide door 12 and is connected to the actuator 16 via the drive circuit 19.

  As shown in FIG. 4A to FIG. 4C, the lock mechanism 15 includes a latch 21 and a ratchet 22, and the latch 21 engages with a striker 23 fixed to the opening end of the vehicle 11. It is formed in a fork shape having an engaging groove 21a. Further, the latch 21 is supported by the latch shaft 24 and is rotatable. When the slide door 12 is closed toward the fully closed position, the latch 21 is pushed by the striker 23 that has entered the engagement groove 21a, and FIG. ) To the full latch position shown in FIG. 4 (c) through the half latch position shown in FIG. 4 (b).

  The ratchet 22 includes a locking claw portion 22 a that protrudes toward the latch 21, and is rotatably supported on the ratchet shaft 25 on the same plane as the latch 21. Further, the ratchet 22 is urged in a direction (clockwise in FIG. 4) in which the locking claw portion 22a is brought into contact with the latch 21 by an urging means such as a spring (not shown).

  As shown in FIG. 4 (b), the locking claw portion 22a engages with a half latch locking groove 21b provided in the latch 21 when the latch 21 is in the half latch position. As a result, the latch 21 rotated to the half latch position is restricted from rotating toward the unlatched position by the ratchet 22, and the slide door 12 is held at the half door position. Even when the locking claw portion 22a is engaged with the half latch locking groove 21b, the latch 21 can be pushed up to the full latch position by pushing up the locking claw portion 22a. Accordingly, the rotation of the latch 21 in the half latch position in the direction of the unlatching position is restricted, but the rotation in the direction of the full latch position is permitted. That is, when the latch 21 is between the half latch position and the full latch position, the slide door 12 is held in a temporarily connected state that is not held in the fully closed position but cannot be opened, that is, in a half door state.

  As shown in FIG. 4C, when the latch 21 rotates to the full latch position, the locking claw portion 22a engages with the engagement groove 21a of the latch 21, and the latch 21 is restricted from rotating in the unlatched position direction. It is held in the full latch position. As a result, the slide door 12 is held in the fully closed position.

  That is, in the lock mechanism 15, when the latch 21 is in the half latch position and the full latch position, the ratchet 22 is engaged with the latch 21, so that the latch 21 is moved between the half latch position and the full latch position, that is, the sliding door 12. It is designed to be held in the half door position and the fully closed position.

  A door knob 26 as a door opening means operated by an operator such as an occupant is provided on the interior side and the exterior side of the slide door 12. The door knob 26 is connected to the ratchet 22 through, for example, a connecting rod 27 and the like, and when the door knob 26 is operated, the ratchet 22 rotates in a direction away from the latch 21 in conjunction with the operation. That is, when the sliding door 12 held in the fully closed position or the half door position by the lock mechanism 15 is opened, the engagement of the ratchet 22 with the latch 21 is released by operating the door knob 26, thereby The sliding door 12 can be opened by being freely rotatable in the unlatched position direction. In the case shown in the figure, the ratchet 22 is connected to the door knob 26 by a connecting rod 27. However, the present invention is not limited to this. For example, the door knob 26 and the ratchet 22 are connected using a wire or the like. The ratchet 22 may be disengaged from the latch 21 in conjunction with the operation of the door knob 26, such as electrically detecting the motor and driving the ratchet 22 with an electric motor or the like interlocking with this.

  On the other hand, as shown in FIGS. 4A to 4C, the actuator 16 has an electric motor 31 as a drive source, a power conversion mechanism 32, and a drive rod 33, and when the electric motor 31 operates, its output Is converted into a linear reciprocating motion by the power conversion mechanism 32 so that the drive rod 33 moves forward and backward. The movement direction of the drive rod 33 is set so as to deviate from the axis of the latch shaft 24 and pass on the movement locus of the latch 21. When the drive rod 33 advances from the original position, the latch 21 is pushed by the drive rod 33. It moves to the full latch position. In addition, after the latch 21 is moved to the full latch position, the electric motor 31 is reversely rotated and the drive rod 33 is moved backward to the original position so as to be separated from the latch 21.

  As the power conversion mechanism 32, for example, a rack and pinion mechanism, a ball screw mechanism or the like is used, but other mechanisms may be used.

  The door closing device 14 is provided with a half latch switch 34 as a half latch detection means, a ratchet switch 35 as a ratchet detection means, a full latch switch 36 and a door knob operation detection switch 37. These switches 34 to 37 are limit switches, and output detection signals when the switches 34 to 37 are pressed and turned on. The control device 17 detects the position or state of the sliding door 12 based on the detection signals from these switches 34 to 37, and operates the actuator 16 when the sliding door 12 shifts from the open state to the half door state. Thus, the sliding door 12 is forcibly closed to the fully closed state.

  FIG. 5 is an operation chart showing the state of each switch and actuator when the sliding door in the open state is closed, and FIG. 6 is an operation chart showing the state of each switch and actuator when the sliding door in the fully closed state is opened. It is.

  As shown in FIGS. 5 and 6, the half latch switch 34 is pushed by the latch 21 when the latch 21 rotates from the unlatched position to the half latch position, that is, this half latch switch. 34, it is detected that the latch 21 is in the half latch position. The half latch switch 34 is continuously turned on when the latch 21 rotates from the half latch position to the full latch direction.

  The ratchet switch 35 is pushed by the ratchet 22 when the ratchet 22 is engaged with the latch 21. That is, the ratchet switch 35 detects that the ratchet 22 is engaged with the latch 21. It has become so. In this case, when the ratchet 22 is engaged with the engagement groove 21a of the latch 21, the ratchet switch 35 is turned on on the open side by a predetermined distance with respect to the half latch switch 34. The half latch state is detected by the half latch switch 34 after the ratchet 22 is securely engaged with the latch 21. The half-latch state is a state where the latch 21 is movable between the half-latch position and the full-latch position. At this time, the slide door 12 is not held in the fully closed position but is opened. This is a temporary connection state that cannot be performed, that is, a half-door state.

  The full latch switch 36 is pushed by the latch 21 when the latch 21 is in the full latch position, that is, the full latch switch 36 detects that the latch 21 is in the full latch position. It has become so.

  The door knob operation detection switch 37 is turned on when the door knob 26 is operated. That is, the door knob operation detection switch 37 detects that the door knob 26 is operated.

  On the other hand, a control device 17 as a control means includes a microprocessor (CPU) (not shown) that calculates a control signal, a ROM (not shown) that stores a control program, an arithmetic expression, map data, and the like, and a data that is temporarily not stored. A control circuit is provided with a RAM and has a function as a so-called microcomputer.

  As shown in FIG. 3, the control device 17 has a switch information input unit 41 to which the switches 34 to 37 are connected, and detection signals of the switches 34 to 37 are transmitted from the switch information input unit 41 to the control device. 17 is input.

  The detection signal of the door knob operation detection switch 37 input to the switch information input unit 41 is sent to the door knob operation determination unit 42, and the door knob operation determination unit 42 operates the door knob 26 based on the input detection signal. It is determined whether or not it has been done.

  On the other hand, detection signals of the half latch switch 34, the ratchet switch 35 and the full latch switch 36 are sent from the switch information input unit 41 to the door position determination unit 43, and the door position determination unit 43 receives the input detection signal. The position, that is, the state of the slide door 12 is determined based on the above. In this case, when both the half latch switch 34 and the ratchet switch 35 are turned OFF, the slide door 12 is in an open state (including a state in which the latch 21 is between the unlatched position and the half latch position and the slide door 12 can be opened). )), And when one of the half latch switch 34 and the ratchet switch 35 is turned on, it is determined that the slide door 12 is in the half door state. That is, the control device 17 detects the open state and the half door state of the slide door 12 based on detection signals from the half latch switch 34 and the ratchet switch 35. The door position determination unit 43 determines that the slide door 12 is in the fully closed position when both the ratchet switch 35 and the full latch switch 36 are turned on.

  The determination results by the door knob operation determination unit 42, the door position determination unit 43, and 43 are sent to the door position state determination unit 44. The door position state determination unit 44 sends the determination result of the door position determination unit 43 to the door position state determination unit 45 when the door knob operation determination unit 42 determines that the door knob 26 is not operated, and the control device 17 performs the sliding door. 12 state detections are finalized. When the state of the slide door 12 is determined by the door position state determination unit 45, the door open state recognized determination unit 46 recognizes that the slide door 12 is in the open state, and the door open state recognized signal is sent to the door open state. It is sent from the state recognized determination unit 46 to the actuator operation determination unit 47. Further, the state of the slide door 12 determined by the door position state determination unit 45 is input to the actuator operation determination unit 47.

  When the actuator position determination unit 45 detects that the slide door 12 is in a half-door state when the recognized signal from the door open state recognized determination unit 46 is transmitted, A drive signal is output to the control signal output unit 48. When the drive signal is sent to the control signal output unit 48, the control signal output unit 48 outputs the control signal to the drive circuit 19, whereby the drive circuit 19 is driven to operate the electric motor 31, that is, the actuator 16. To start. Thus, in this control device 17, when the half door state of the slide door 12 is detected in a state where the open state of the slide door 12 is recognized, that is, the slide door 12 has shifted from the open state to the half door state. When this is detected, the actuator 16 is operated. As a result, the actuator 16 is operated only when the slide door 12 moves from the open state to the close direction to the half door state, and the slide door 12 closed to the half door state is forced by the actuator 16. Can be closed to the fully closed position.

  Reference numeral 49 denotes a power source such as a battery mounted on the vehicle 11, and the electric motor 31 and the control device 17 are operated by electric power supplied from the power source 49.

  On the other hand, when the door knob operation determination unit 42 determines that the door knob 26 is operated, the door position state determination unit 44 prohibits the determination result of the door position determination unit 43 from being sent to the door position state determination unit 45. The That is, in the control device 17, when the door knob 26 is operated, the detection of the state of the sliding door 12, that is, the recognition of the door open state by the door open state recognized determination unit 46 is prohibited.

  The door position state determination unit 44 is provided with a timer (not shown) that starts when the door knob operation determination unit 42 determines that the operation of the door knob 26 has been stopped. The determination result of the door position state determination unit 44 is sent to the door position state determination unit 45 when it is detected that the detection prohibition time t has elapsed since the stop. In other words, in the control device 17, when the door knob 26 is operated, the detection of the state of the slide door 12 is started after the detection prohibition time t has elapsed since the operation was stopped.

  FIG. 7 is a flowchart showing a control procedure of the control device shown in FIG. 3, and the control procedure of this control device will be described below based on FIG.

  First, when power supply from the power source 49 such as a battery mounted on the vehicle is started to the control device 17, it is determined whether or not the reset is released in step S1, and if it is determined that the reset is performed, the sliding door is determined. 12 state detection is started.

  Next, in step S2, it is determined whether or not the open state of the slide door 12 is recognized. If it is determined that the open state of the slide door 12 is recognized, the slide door 12 is in the half-door state in step S3. It is determined whether or not. When it is determined in step S3 that the slide door 12 is in the half door state, it is recognized that the slide door 12 has shifted from the open state to the half door state, and in step S4, the door open state recognized determination unit 46 determines. The recognition of the door open state is cleared, and then the operation of the actuator 16 is started in step S5. Then, the actuator 16 operates until the fully closed state of the slide door 12 is detected. If it is determined in step S6 that the slide door 12 is fully closed, the routine returns to step S2.

  This control procedure will be described with reference to FIG. 5. When the slide door 12 is in the open state, the half latch switch 34 and the ratchet switch 35 are both OFF, so the open state of the slide door 12 is recognized. When the slide door 12 is closed to the half door position, the ratchet switch 35 is turned on and the half door state of the slide door 12 is recognized. As a result, it is detected that the slide door 12 has shifted from the open state to the half door state, and the actuator 16 is actuated to drive the slide door 12 toward the fully closed position. When the sliding door 12 is driven by the actuator 16 and moves from the half door position toward the fully closed position, the latching claw portion 22a of the ratchet 22 reaches between the engagement groove 21a and the half latch locking groove 21b, and the ratchet. The switch 35 is turned off again. At this time, since the half latch switch 34 is turned on, the half door state of the slide door 12 is continuously recognized. When the slide door 12 is closed to the fully closed position, both the ratchet switch 35 and the full latch switch 36 are turned on, and the control device 17 recognizes the fully closed state of the slide door 12, whereby the actuator 16 is driven to the drive rod. It operates in the reverse direction and stops until 33 is in the original position.

  On the other hand, if it is determined in step S2 that the open state of the slide door 12 is not recognized, recognition of the door open state is prohibited in step S7. That is, the door position state determination unit 44 prohibits the detection of the state of the slide door 12 until the continuation time indicating that the operation of the door knob 26 is stopped. Recognition of the door open state by 46 is also prohibited. This prohibition state is continued until it is determined in step S8 that the operation of the door knob 26 has been stopped. That is, when the door knob 26 is being operated, the ratchet switch 35 is turned off in conjunction with the door knob 26, so that the detection of the state of the sliding door 12 determined based on the detection signal of the ratchet switch 35 is prohibited. The recognition of the 12 open states is prohibited.

  Therefore, as shown in FIG. 6, when the fully closed slide door 12 moves in the opening direction to the position where the half latch switch 34 is turned off while the door knob 26 is operated, the half latch switch 34 and the ratchet switch 35. Are both OFF and the recognition condition for the half door state of the slide door 12 is established, but since the detection of the state of the slide door 12 is prohibited at this time, the open state of the slide door 12 is not recognized. Thus, even if the operation of the door knob 26 is stopped in this state and the ratchet switch 35 is turned on, the transition from the open state of the slide door 12 to the half-door state is not detected, so the actuator 16 does not operate. That is, in this control device 17, when the door knob 26 is operated and the fully closed slide door 12 is shifted to the half-door state, the state detection of the slide door 12 is prohibited to prevent the slide door 12 from being detected. First, the operation of the actuator 16 is prohibited.

  Thus, in this door closing device 14, when the door knob 26 is operated and the fully closed slide door 12 is opened, the actuator 16 is prohibited from starting, so that the actuator 16 malfunctions to open. It is possible to prevent the sliding door 12 being closed to the fully closed position. Therefore, it is possible to prevent the sliding door 12 from moving and closing in the closing direction against the operator's intention, and to enhance the operational feeling of the door closing device 14.

  Further, in the door closing device 14, since the actuator 16 is prohibited from being activated by prohibiting the detection of the state of the slide door 12 when the door knob 26 is operated, the door knob 26 and the ratchet 22 are interlocked. The malfunction of the actuator 16 in the door closing device 14 can be prevented without changing the mechanical structure of the door closing device 14.

  If the recognition of the door open state is prohibited in step S7, it is then determined in step S8 whether or not the operation of the door knob 26 is stopped. Note that when the process proceeds from step S7 to step S8, the timer count is reset.

  If it is determined in step S8 that the operation of the door knob 26 has been stopped, the timer is started in step S9, and the duration in which the operation of the door knob 26 is stopped by the timer count in step S10 is the detection prohibited time t (for example, 160 ms). ) Has been determined. If it is determined in step S10 that the detection prohibition time t has elapsed, detection of the state of the slide door 12 is started in step S11. Thereby, for example, even if the detection timing of the door knob operation detection switch 37 and the ratchet switch 35 has an error and the ratchet switch 35 remains turned off after the door knob operation detection switch 37 is turned off, the half latch It is possible to prevent both the switch 34 and the ratchet switch 35 from being turned off and the open state of the slide door 12 being erroneously recognized.

  On the other hand, if it is determined in step S8 that the operation of the door knob 26 has not been stopped, the timer count is reset and the process returns to step S7.

  Thus, in this door closing device 14, since the detection of the state of the slide door 12 is started after the detection prohibition time has elapsed since the operation of the door knob 26 is stopped, the detection timing of the door knob operation detection switch 37 and Even if an error occurs in the detection timing of the ratchet switch 35, it is possible to reliably prevent erroneous detection of the door state by absorbing this error. Therefore, it is possible to reliably prevent the actuator 16 from malfunctioning and to close the slide door 12 to the fully closed position, and to improve the operation reliability of the door closing device 14.

  When the detection of the state of the slide door 12 is started in step S11, it is determined in step S12 whether or not the slide door 12 has been opened. If not, the process returns to step S7 and the flow from step S7 onward. repeat. On the other hand, if it is determined in step S12 that the slide door 12 is in the open state, the open state of the slide door 12 is recognized in step S13, the routine is returned, and the position state of the slide door 12 is determined in step S2.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the above-described embodiment, the case where the door closing device 14 of the present invention is applied to the slide door 12 is shown. However, the present invention is not limited to this. You may apply to the back door etc. which are provided in.

  Moreover, in the said embodiment, although the electric motor 31 is used as a drive source, you may make it use not only this but another drive sources, such as an electromagnetic actuator and a hydraulic cylinder, for example.

  Further, in the above-described embodiment, the control device 17 detects the half latch position when one of the half latch switch 34 and the ratchet switch 35 is turned on, and when the ratchet switch 35 is turned on, Although the engagement with the latch 21 is detected, the present invention is not limited to this, and it may be detected when it is turned off.

  Further, the half latch detection means and the ratchet detection means are not limited to limit switches, and any means that can detect the half latch state of the latch 21 or the engagement of the ratchet 22 with the latch 21 may be used.

  Furthermore, in the said embodiment, although the door opening means is the door knob 26 provided in the slide door 12, it is not restricted to this, It is portable for accepting the opening operation of the slide door 12 when the button is pushed. Any keyless switch or the like that can release the engagement of the ratchet 22 with respect to the latch 21 can be used.

It is a side view which shows the vehicle provided with the door closing apparatus which is one embodiment of this invention. It is explanatory drawing which shows the detail around the door of the vehicle shown in FIG. It is a block diagram which shows the control system of the door closing apparatus shown in FIG. (A)-(c) is explanatory drawing which shows the operating state of a locking mechanism and an actuator when a latch exists in an unlatch position, a half latch position, and a full latch position, respectively. It is an operation | movement chart which shows the state of each switch and actuator when the sliding door of an open state is closed. It is an operation | movement chart which shows the state of each switch and actuator when the sliding door of a fully closed state is opened. It is a flowchart figure which shows the control procedure of the control apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vehicle 12 Slide door 12a Roller assembly 13 Guide rail 14 Door closing device 15 Lock mechanism 16 Actuator 17 Control device 18 Closer mechanism 19 Drive circuit 21 Latch 21a Engaging groove 21b Half latch locking groove 22 Ratchet 22a Locking claw part 23 Strike 24 Latch shaft 25 Ratchet shaft 26 Door knob 27 Connecting rod 31 Electric motor 32 Power conversion mechanism 33 Drive rod 34 Half latch switch 35 Ratchet switch 36 Full latch switch 37 Door knob operation detection switch 41 Switch information input section 42 Door knob operation determination section 43 Door position Determination unit 44 Door position state determination unit 45 Door position state determination unit 46 Door open state recognized determination unit 47 Actuator operation determination unit 48 Control signal output unit 49 Power supply t Prohibition time out

Claims (8)

A lock mechanism that includes a latch and a ratchet, holds the vehicle door in a half-door position and a fully-closed position, and releases the engagement of the ratchet by operation of a door opening means so that the door can be opened; and A door closing device for automatically closing the door closed to the half-door position, the drive source having a drive source for shifting from the half-latch position to the full-latch position,
Half latch detection means for detecting that the latch is in a half latch position;
Ratchet detecting means for detecting that the ratchet is engaged with the latch;
Based on detection signals of the half latch detection means and the ratchet detection means, it is detected that the door is in an open state or a half door state, and when the door is changed from the open state to the half door state, the drive source Control means for operating
When the door opening means is operated and the door shifts from a fully closed state to a half door state, activation of the drive source is prohibited regardless of the state of the door.   2. The door closing device according to claim 1, wherein when the door opening means is operated, detection of the state of the door by the control means is prohibited.   3. The door closing device according to claim 1 or 2, wherein detection of the state of the door by the control means is started after a detection prohibition time has elapsed since the operation of the door opening means was stopped. .   The door closing device according to any one of claims 1 to 3, wherein the door opening means is a door knob provided on the door and connected to the ratchet and interlocked with the ratchet. . A lock mechanism that includes a latch and a ratchet, holds the vehicle door in a half-door position and a fully-closed position, and releases the engagement of the ratchet by operation of a door opening means so that the door can be opened; and A door closing device control device used for a door closing device having a drive source for shifting from a half latch position to a full latch position and automatically closing the door closed to the half door position,
The door is in an open state or a half-door state based on detection signals from a half latch detection means for detecting that the latch is in a half latch position and a ratchet detection means for detecting that the ratchet is engaged with the latch. The drive source is activated when the door shifts from the open state to the half door state, and the door opening means is operated to move the door from the fully closed state to the half door state. And a door closing device control device that prohibits activation of the drive source regardless of the state of the door.   6. The control device for a door closing device according to claim 5, wherein the door state detection is prohibited when the door opening means is operated.   The door closing device control device according to claim 5 or 6, wherein detection of the state of the door is started after a detection prohibition time has elapsed since the operation of the door opening means was stopped. Control device. The control device for a door closing device according to any one of claims 5 to 7, wherein the door opening means is a door knob provided on the door and connected to the ratchet and interlocking with the ratchet. Control device for door closing device.

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