JP2021025392A - Open/close body drive control device for vehicle - Google Patents

Abstract

To provide a technique capable of improving the function of an automatic opening/closing control mechanism, regarding the drive control of an open/close body for vehicles, and capable of improving user's operability and safety.SOLUTION: A controller 2, which is an open/close body drive control device for vehicles, detects the position of an open/close body, detects the state of a latch mechanism, controls an opening/closing operation of the open/close body according to the position of the open/close body, and performs control in such a way as to shift from a normal state to a power saving state in response to a sleep condition and shift from the power saving state to the normal state in response to a return condition. The controller, when shifting to the power saving state (S5), stores open/close body position information in a memory (S3), and stores latch state information in the memory (S2). The controller, when returning to the normal state (S7), compares the detected current latch state with the latch state in the memory (S8), and if there is any change, performs control so as to erase the open/close body position information in the memory so that it is not used (S10).SELECTED DRAWING: Figure 7

Description

The present invention relates to a drive control technique for an opening / closing body such as a vehicle door.

An opening / closing body such as a sliding door or a door such as a tailgate in a vehicle may be provided with a latch mechanism or an automatic opening / closing control mechanism. The latch mechanism is a mechanism for changing the state of the door with respect to the vehicle body between each state such as an open state, a half-latch state, and a full-latch state. The automatic opening / closing control mechanism is a mechanism that assists the user in opening / closing the door by driving the actuator of the door to automatically open / close the door.

Examples of prior art related to the above include Japanese Patent Application Laid-Open No. 2015-140519 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2017-172180 (Patent Document 2). Patent Document 1 describes a latch mechanism for a sliding door of a vehicle. Patent Document 2 describes a vehicle tailgate opening / closing control and sleep control.

JP 2015-140519 Japanese Unexamined Patent Publication No. 2017-172180

Some of the automatic door opening / closing control mechanisms in conventional vehicles perform control according to the opening / closing position of the door. For example, there is a function of variably controlling the speed of movement of the door opening / closing operation according to the position of the door.

Further, the automatic door opening / closing control mechanism in a conventional vehicle may have a sleep control function. The control device of the prior art example shifts the state of the system from the normal mode to the power saving mode according to a predetermined sleep condition, and also shifts the system state from the power saving mode to the normal mode according to a predetermined return condition. Return to mode.

The control device of the prior art example stores the door position information in the memory when putting it to sleep, and when returning, it refers to the door position information stored in the memory and restarts the automatic opening / closing control according to the position. To do. This assumes that the door position is the same before sleep and after wakeup.

However, in the vehicle system of the prior art example, after returning, there may be a difference such as a deviation between the door position saved before sleep, which is the door position recognized by the control device, and the actual door position. obtain. In other words, the control device of the prior art example may be temporarily unable to grasp the actual position of the door in an exceptional situation.

As a specific example of an exceptional situation, in a conventional vehicle system, when the automatic opening / closing control mechanism is sleeping in the fully closed state and the full latch state of the door, the user operates the emergency opening operation mechanism of the door to open the door. There is a case where it was done. The emergency open operation mechanism is a mechanism that allows the user to open the fully closed and fully latched doors in an emergency. In this case, for example, after returning, the control device performs speed control for the automatic opening operation with reference to the fully closed position of the door before sleep. At this time, since the actual door position is a position other than the fully closed position, the speed control according to the door position does not work properly. As a result, the door speed may become an unintended speed or an undesired speed for the user, which may reduce the user's operability and may cause a situation in which an object or body comes into contact with the door. ..

An object of the present invention is to provide a technique capable of improving the function of an automatic opening / closing control mechanism and improving a user's operability and safety with respect to drive control of an opening / closing body for a vehicle.

The vehicle opening / closing body drive control device of the present invention is a vehicle opening / closing body drive control device that controls the opening / closing drive by a drive device having a drive source for opening / closing the opening / closing body provided in the vehicle. An opening / closing body position detection unit that detects the position of the opening / closing body, an opening / closing body position memory that stores the position of the opening / closing body detected by the opening / closing body position detection unit as opening / closing body position information, a vehicle body of the vehicle, and the opening / closing body. A latch state detection unit that detects the state of the latch mechanism that can hold the open / close body in the fully closed position by engaging with, and a latch that stores the state of the latch mechanism detected by the latch state detection unit as latch state information. The state memory, the drive control unit that controls the opening / closing operation of the opening / closing body according to the position of the opening / closing body, and the drive source are shifted from the normal state in which they can operate to the power saving state according to the sleep condition. A sleep control unit that controls the transition from the power saving state to the normal state according to the return condition is provided, and the open / close body position memory is changed from the normal state to the power saving state by the sleep control unit. The position of the opening / closing body detected by the opening / closing body position detecting unit at the time of transition is stored as the opening / closing body position information, and the latch state memory is changed from the normal state to the power saving state by the sleep control unit. The latch state detected by the latch state detection unit at the time of transition is stored as the latch state information, and the drive control unit returns to the normal state from the power saving state by the sleep control unit. The current state of the latch mechanism detected by the latch state detection unit is compared with the state of the latch mechanism indicated by the latch state information stored in the latch state memory, and if there is a change, the state is described. It is characterized in that the opening / closing body position information stored in the opening / closing body position memory is controlled so as not to be used.

In the vehicle opening / closing control device of another aspect of the present invention, when the drive control unit returns from the power saving state to the normal state by the sleep control unit, there is a change in the latch state information. Is characterized in that it is controlled so as to prohibit the automatic opening / closing drive of the opening / closing body.

In the vehicle opening / closing control device of another aspect of the present invention, when the drive control unit returns from the power saving state to the normal state by the sleep control unit, there is a change in the latch state information. Is characterized in that, after grasping that the position of the opening / closing body detected by the opening / closing body position detecting unit has returned to the fully closed position or the fully opened position, the prohibition of the automatic opening / closing drive of the opening / closing body is released. And.

A vehicle opening / closing control device according to another aspect of the present invention is characterized in that the drive control unit controls to change the speed of automatic opening / closing drive of the opening / closing body according to the position of the opening / closing body. To do.

The vehicle opening / closing control device of another aspect of the present invention further has a rotation sensor for detecting the rotation state of the drive source, and the opening / closing body position detecting unit is based on the rotation state detected by the rotation sensor. It is characterized in that the position of the opening / closing body is calculated.

In the vehicle opening / closing control device of another aspect of the present invention, the opening / closing body is a tailgate or a sliding door.

According to the present invention, regarding the drive control of the opening / closing body for a vehicle, the function of the automatic opening / closing control mechanism can be improved, and the user's operability and safety can be improved.

It is a figure which shows the structure of the vehicle system including the opening / closing body drive control device for a vehicle of Embodiment 1 of this invention. FIG. 5 is a diagram showing a configuration in which the rear part of the vehicle is viewed from the rear in the first embodiment. It is a figure which shows the structure which looked at the rear part of the vehicle from the side in Embodiment 1. FIG. It is a figure which shows the structural example of the actuator in Embodiment 1. FIG. 5 is a diagram showing a configuration example of a target speed map in door speed control according to the first embodiment. It is a figure which shows the structural example of the latch mechanism in Embodiment 1. FIG. It is a figure which shows the control flow by the opening / closing body drive control device for a vehicle of Embodiment 1. FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In principle, the same parts are designated by the same reference numerals in all the drawings for explaining the embodiments, and the repeated description will be omitted.

(Embodiment 1)
The vehicle opening / closing body drive control device according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7.

[Overview, etc.]
In the vehicle system of the prior art example, the control is not coordinated between the door latch mechanism and the automatic opening / closing control mechanism including the door speed control function and the sleep control function. As described above, the control device of the prior art example performs automatic opening / closing control including door speed control using the door position information immediately before sleep when returning from sleep with respect to the automatic opening / closing control mechanism. Therefore, in an exceptional situation such as when the emergency opening operation mechanism is used, if there is a difference between the door position recognized by the control device and the actual door position, the appropriate automatic opening / closing control does not work.

In the vehicle system including the vehicle opening / closing body drive control device of the first embodiment, the control is coordinated between the door latch mechanism and the automatic opening / closing control mechanism including the door speed control function and the sleep control function, and the automatic opening / closing control is performed. Improve functionality. This vehicle opening / closing body drive control device checks the state of the latch mechanism when returning from sleep, and if there is a change in the current state of the latch mechanism compared to before sleep, the door was opened by the emergency opening operation mechanism. I assume there is a possibility. Then, in response to this exceptional situation, this vehicle opening / closing body drive control device updates the door position information, such as erasing the door position information before sleep so that it is not used for automatic opening / closing control. For example, control is performed so as to temporarily prohibit the automatic opening / closing operation. As a result, it is possible to prevent automatic opening / closing control such as door speed control according to the door position from causing an erroneous action.

[Vehicle system]
FIG. 1 shows the configuration of a vehicle system including the vehicle opening / closing body drive control device of the first embodiment. This vehicle system includes a vehicle control device 1, a controller 2 which is a vehicle opening / closing body drive control device of the first embodiment, and a tailgate device 4 including a tailgate 3 which is a door. The vehicle control device 1 and the controller 2 may be integrated, or the tailgate device 4 (for example, the drive control board 41) and the controller 2 may be integrated. Electric power is supplied from the battery of the vehicle to each part such as the controller 2 and the drive control board 41.

The vehicle control device 1 is composed of an ECU (Electronic Control Unit) or the like, and controls the entire vehicle system including engine control. A controller 2 or the like is connected to the vehicle control device 1 through a communication interface such as CAN (Car Area Network). The vehicle control device 1 can give an instruction regarding control and setting of the tailgate device 4 to the controller 2.

The controller 2 controls the tailgate device 4. In particular, the controller 2 performs drive control on the actuator 5 by giving a control signal SIG2 to the drive control board 41. The controller 2 is connected to the drive control board 41, the rotation sensor 8, the switch 9, the door open / close switch 32, the switch of the latch mechanism 60 of the lock device 30, and the like via a communication interface such as CAN or LIN (Local Interconnect Network). It is connected. The controller 2 is composed of, for example, a microcontroller unit including a CPU, ROM, RAM, etc., a non-volatile memory, a counter, an input / output port, a communication circuit, an analog-to-digital converter (ADC), and the like. The controller 2 realizes each function by software program processing or a dedicated circuit.

The controller 2 is an element constituting the automatic opening / closing control mechanism of the tailgate 3, and has a corresponding automatic opening / closing control function. The automatic opening / closing control function of the controller 2 includes an actuator control unit F1, a door position detection unit F2, a latch state detection unit F3, a door speed control unit F4, a sleep control unit F5, and an update control unit F6. The actuator control unit F1 is a part that controls the actuator 5 of the tailgate device 4. The door position detection unit F2 is a portion that calculates and grasps the opening / closing position of the tailgate 3 based on the detection signal SIG3 of the rotation sensor 8 and stores it in the door position memory 202 of the memory as door position information. The latch state detection unit F3 is a portion that detects the state of the latch mechanism 60 based on the detection signals from each switch of the latch mechanism 60 and stores it in the latch switch state memory 201 as the latch switch state. The door speed control unit F4 is a part that controls the speed at the time of opening / closing operation of the tailgate 3 based on the target speed map 200. The sleep control unit F5 is a part that controls the transition between the normal mode and the power saving mode based on the conditions. The update control unit F6 is a part that controls the update of the door position information and the like of the door position memory 202 in an exceptional situation such as when the emergency opening operation mechanism 33 is used.

The controller 2 stores information such as the target speed map 200, the latch switch state, and the door position in the memory for control, and reads and writes appropriately. The controller 2 stores the state of the latch mechanism 60 as the latch switch state information in the latch switch state memory 201 in the memory. The controller 2 stores the position of the tailgate 3 as door position information in the door position memory 202 in the memory. The target speed map 200 is setting information that defines the relationship between the position of the tailgate 3 and the target speed with respect to the door speed control function by the door speed control unit F4. The latch switch state memory 201 is a memory in which information representing the state of each switch and the state of the latch mechanism 60 is stored based on the detection signals from the switches of the latch mechanism 60 of the lock device 30. There are at least three types of states of the latch mechanism 60: an open state, a half-latch state, and a full-latch state. The door position memory 202 is a memory in which information indicating the open / closed position of the tailgate 3 calculated and grasped based on the detection signal SIG3 from the rotation sensor 8 is stored. The controller 2 reads and writes information from the latch switch state memory 201 and the door position memory 202 in accordance with the sleep control by the sleep control unit F5.

The controller 2 inputs the open / close signal SIG1 from the switch 9 and the open / close signal SIG4 from the door open / close switch 32, acquires the detection signal SIG3 and the like from the rotation sensor 8, and controls the drive control board 41 according to the automatic open / close control. The signal SIG2 is given. The controller 2 acquires the detection signal SIG3 from the rotation sensor 8 based on the monitoring. Further, based on monitoring, the controller 2 uses the detection signal SIG5 from the ratchet switch 65, the detection signal SIG6 from the half latch switch 66, and the full latch switch as detection signals from each switch of the latch mechanism 60 of the lock device 30. The detection signal SIG7 and the like from 67 are acquired. Further, the controller 2 gives the latch mechanism 60 a drive control signal SIG8 to the closure 68, a drive control signal SIG9 to the releaser 69, and the like.

The switch 9 and the door open / close switch 32 are switches that can be operated by the user, and are composed of a hardware button, a switch circuit, and the like. The switch 9 is an automatic opening / closing switch for operating the automatic opening / closing control mechanism of the tailgate 3, and is arranged on, for example, a door on the side of the driver's seat or an instrument panel. The door open / close switch 32 is a switch for opening / closing the tailgate 3, and is provided on, for example, the door handle 31 of the tailgate 3. The operation of the switch 9 and the door open / close switch 32 can be, for example, an open operation and a close operation. By operating the switch 9, the driver can automatically open and close the tailgate 3. By operating the door open / close switch 32, the user can automatically open / close the tailgate 3. The switch 9 generates an open / close signal SIG1. The door open / close switch 32 generates an open / close signal SIG4. The open / close signal SIG1 and the open / close signal SIG4 include, for example, an open signal representing an open operation and a close signal representing a close operation. The switch 9 and the door open / close switch 32 may be configured as a remote control switch. In that case, the controller 2 receives the open / close signal from the remote controller via wireless communication. The controller 2 controls the automatic opening operation of the tailgate 3 based on the opening signal from the switch 9 and the door opening / closing switch 32, and controls the automatic closing operation based on the closing signal.

The tailgate device 4 includes a tailgate 3 and a drive unit 40. The drive unit 40 includes a drive control board 41, an actuator 5, and a rotation sensor 8. The drive control board 41 drives the actuator 5 according to the control signal SIG2 from the controller 2. The actuator 5 is a drive device, has a built-in motor as a drive source, has a telescopic structure, holds a tailgate 3, and opens and closes the tailgate 3. The rotation sensor 8 detects the rotation state of the motor in the actuator 5 and generates a detection signal SIG3 indicating the rotation state.

The tailgate 3 includes a door handle 31 including a door open / close switch 32, an emergency opening operation mechanism 33, and a lock device 30. The door handle 31 is a part for the user to manually open and close the tailgate 3. For example, when the door handle 31 is opened by the user, the door open / close switch 32 is turned on, and an open signal is given to the controller 2 as an open / close signal SIG4. The emergency opening operation mechanism 33 is a mechanism that allows the user to manually open the tailgate 3 in the locked state, that is, in the full latch state from the vehicle interior side or the outside in an emergency. The emergency opening operation mechanism 33 may be provided on a part of the vehicle body. In this example, the emergency opening operation mechanism 33 is a mechanism capable of opening the tailgate 3 from the vehicle interior side. In this example, the emergency opening operation mechanism 33 is provided in the vicinity of the lock device 30. The emergency opening operation mechanism 33 may be composed of, for example, a lever, a handle, or the like, or may be a mechanism or the like that can open the lid to access the internal lock device 30.

The locking device 30 has a latch mechanism 60. The latch mechanism 60 is a mechanism capable of engaging the vehicle body and the tailgate 3 to hold the tailgate 3 in a fully closed position. The latch mechanism 60 has a first latch portion provided on the vehicle body side and a second latch portion provided on the tailgate 3 side. Further, the latch mechanism 60 has a ratchet switch 65, a half latch switch 66, and a full latch switch 67 as each switch (in other words, a sensor), and also has a closure 68 and a releaser 69.

[Vehicles and tailgates]
FIG. 2 shows an outline of the vehicle 100 equipped with the vehicle opening / closing body drive control device of the first embodiment, when the rear part of the vehicle 100 is viewed from the rear. The X, Y, and Z directions are shown as explanatory directions. The X direction corresponds to the left-right direction of the vehicle, the Y direction corresponds to the front-rear direction of the vehicle, and the Z direction corresponds to the vertical direction and the height direction of the vehicle. The vehicle 100 of this example is a so-called hatchback type vehicle. At the rear of the vehicle 100, a relatively large passenger compartment is provided so that it can be used for loading and unloading luggage. A tailgate 3 which is an opening / closing body is provided at the opening of the vehicle body of the vehicle interior. The tailgate 3 is also called a back door or the like. The vehicle 100 includes a tailgate device 4 including a tailgate 3. The tailgate device 4 is a power tailgate capable of automatically opening and closing the tailgate 3. The actuator 5 of the tailgate device 4 is connected to the controller 2 through a cable 101. Two actuators 5 are provided as actuators 5A and 5B on both the left and right sides of the vehicle body, for example. One end of each actuator 5 is fixed to the vehicle body, and the other end is fixed to the tailgate 3.

FIG. 3 shows an outline of the rear portion of the vehicle 100 of FIG. 2 as viewed from the side, and shows a state in which the tailgate 3 is opened to some extent. In this open state, an opening 105 is formed so that luggage and the like can be taken in and out of the vehicle interior. The tailgate 3 rotates about a roller assembly 102 provided on the ceiling of the vehicle 100, particularly on the upper side of the rear portion, and the position of the tailgate 3 and the opening 105 are determined according to the rotation angle of the rotation. The size changes. In other words, the roller assembly 102 is a rotating shaft portion, and may have a mechanism for stably holding the tailgate 3 in the open state of the tailgate 3. As shown in the drawing, the operation of increasing the opening 105 by rotating the lower side of the tailgate 3 upward is defined as the opening operation, and the lower side of the tailgate 3 is rotated downward. The operation of reducing the size of the opening 105 is defined as the closing operation. The direction of the opening operation is the opening direction, and the direction of the closing operation is the closing direction. The state in which the opening 105 is formed is defined as the open state, and the state in which the opening 105 is not formed is defined as the closed state. The open state corresponds to a state other than the half-latch state and the full-latch state in the latch mechanism 60, and includes a fully open state at the fully open position. The closed state corresponds to a half-latch state or a full-latch state, and includes a fully closed state in a fully closed position. The fully closed state corresponds to the full latch state.

A door handle 31 is provided between a part of the tailgate 3, for example, a window and a lower side portion. A locking device 30 including a latch mechanism 60 is mounted on the lower side of the tailgate 3 and the lower side of the corresponding opening 105 of the vehicle body. A striker is provided as a first latch portion 61 in a part of the lower side portion of the opening 105 in the vehicle body, and a second latch portion 62 is provided in the lower side portion of the tailgate 3. Further, for example, an emergency opening operation mechanism 33 is provided in the vicinity of the lock device 30.

The controller 2 controls the motor of the actuator 5 through the drive control board 41 of FIG. 1 via the cable 101 in response to a user operation or an automatic determination. As a result, the state including the opening / closing position and speed of the tailgate 3 is controlled according to the expansion / contraction of the actuator 5. When the tailgate 3 is closed from the open state, the second latch portion 62 is engaged with the first latch portion 61 in the vicinity of the fully closed position in the latch mechanism 60 of the lock device 30, and the half latch state is set. After that, it becomes a full latch state. When the tailgate 3 is opened from the fully-latch state in the fully closed position, the engagement between the first latch portion 61 and the second latch portion 62 is released, and the tailgate 3 is opened after the half-latch state.

[Actuator drive control by controller]
Examples of drive control of the actuator 5 corresponding to automatic opening / closing control of the tailgate 3 by the controller 2 in FIGS. 1 to 3 and an example of detecting the position of the tailgate 3 are as follows. The controller 2 calculates the door position according to the detection signal SIG3 from the rotation sensor 8, and controls the door speed according to the door position based on the target speed map 200. The controller 2 generates a control signal SIG1 for actuator control corresponding to door speed control and the like, and transmits the control signal SIG1 to the drive control board 41. The controller 2 uses a PWM (Pulse Width Modulation) signal to control the drive of the motor of the actuator 5. The controller 2 controls the output duty of the PWM signal.

The drive control board 41 includes a drive circuit. The drive circuit has, for example, four switching elements constituting an H-bridge circuit. The two output terminals of the H-bridge circuit are connected to the motor of the actuator 5 (FIG. 4 described later) via the cable 101. The drive control board 41 drives the motor of the actuator 5 in a designated rotation direction and rotation speed according to the control signal SIG2. The drive control board 41 supplies a drive current to the motor of the actuator 5 based on the switching control of a plurality of switching elements of the drive circuit to generate an electromagnetic force. As a result, the motor is rotationally driven in a designated direction, the actuator 5 expands and contracts, and the tailgate 3 opens and closes. For example, when the motor rotates in the forward direction, the actuator 5 extends and the tailgate 3 opens in the opening direction, and when the motor rotates in the opposite direction, the actuator 5 contracts and the tailgate 3 closes. Closes the operation. The actuator 5 holds the open / closed state of the tailgate 3 when it is stationary.

The rotation sensor 8 monitors and detects the rotation state of the motor of the actuator 5. The rotation sensor 8 is mounted as a motor shaft sensor in the vicinity of the motor in the actuator 5, for example. The rotation sensor 8 generates a pulse signal according to the rotation of the motor and outputs it as a detection signal SIG3. The rotation sensor 8 generates a pulse signal for each rotation of a predetermined rotation angle of the motor shaft, for example. The controller 2 counts the pulse signal of the detection signal SIG3 from the rotation sensor 8 and obtains the pulse count value.

The drive control board 41 adjusts the timing of switching the drive current of the actuator 5 to the motor according to the rotation state detected by the rotation sensor 8. Further, a braking force can be generated in the motor of the actuator 5. When performing braking control, the drive control board 41 switches and controls a plurality of switching elements of the drive circuit to a predetermined state. As a result, a closed circuit is formed in the drive circuit, the motor operates as a generator, and a braking force is generated. A part of the drive control by the controller 2 may be performed by the drive control board 41.

The rotational state of the motor of the actuator 5 has a predetermined correspondence relationship with the opening / closing position of the tailgate 3, and the correspondence relationship is defined in advance. The door position detection unit F2 of the controller 2 grasps the rotation state of the motor based on the detection signal 3 from the rotation sensor 8, and calculates the opening / closing position of the tailgate 3 as the door position. The state of the tailgate 3 includes not only the position but also the presence / absence of operation, the speed, and the like. The door position can be calculated from the pulse count value of the rotation sensor 8 with reference to the fully closed position or the fully open position of the tailgate 3. For example, the controller 2 calculates the rotation angle of the motor shaft from the pulse count value, detects the rotation angle of the output shaft based on a predetermined reduction ratio, and calculates the position of the tailgate 3 from the state of expansion and contraction of the actuator 5.

The correspondence between the pulse count value of the rotation sensor 8 and the position of the tailgate 3 may be defined in advance in a data table or the like. Further, the rotation sensor 8 may be configured to calculate the door position as described above instead of the controller 2. Not limited to the rotation sensor 8, a mechanism capable of detecting the open / closed position of the tailgate 3 may be used. For example, if there is a mechanism for detecting the rotation angle of the roller assembly 102, it may be used.

At the time of automatic opening / closing control, the controller 2 confirms from various signals whether the tailgate 3 has reached the fully closed position or the fully opened position, and if so, terminates the automatic opening / closing operation. That is, the controller 2 stops the motor of the actuator 5 and the like. The state near the fully closed position can be determined from the state of each switch of the latch mechanism 60. When the tailgate 3 is closed, the controller 2 also detects a pinch state of an object with the vehicle body by using, for example, a pressure sensor, and when the pinch is detected, the closing operation is stopped and opened. Performs coping control such as reversal to operation.

[Actuator]
FIG. 4 shows an outline of a structural example of the actuator 5. The actuator 5 has a structure that expands and contracts by a feed screw method using a motor 500. The actuator 5 has a substantially rod shape and includes substantially cylindrical housings 50A, 50B, 50C, fixing portions 51, 52, and a connector portion 53. The housing 50B is fitted to the housing 50A, and the housing 50C is stretchably attached to the housing 50B. The fixing portions 51 and 52 are provided at both ends of the actuator 5, and each has openings for inserting fixing pins (not shown) provided in the vehicle body and the tailgate 3. As a result, the actuator 5 is rotatably connected to the vehicle body and the tailgate 3 about the fixing pin. The connector portion 53 is provided in the vicinity of the fixed portion 51 and serves as an insertion port for the cable 101.

The motor 500 and the like are housed in the housing 50A. The motor 500 outputs a driving force for opening and closing the tailgate 3. In this example, a brushed DC motor is used as the motor 500. One of the motor shafts of the motor 500 is inserted into the brush holder unit 501, and the other is connected to the reduction mechanism unit 502. The drive current from the controller 2 is supplied to the brush of the brush holder unit 501. This drive current is applied to the armature coil via a brush and commutator. As a result, an electromagnetic force is generated in the armature, and the armature rotates together with the motor shaft in a predetermined rotation direction and rotation speed.

The brush holder unit 501 includes a sensor magnet (not shown) attached to one end of the motor shaft, and a sensor substrate installed so as to face the sensor magnet. The sensor magnet and the sensor substrate function as a motor shaft sensor (that is, the rotation sensor 8 in FIG. 1) that detects the rotation angle of the motor 500. This motor shaft sensor detects a magnetic change when the motor shaft and the sensor magnet rotate, and outputs a pulse corresponding to the detection.

The speed reduction mechanism unit 502 includes, for example, a speed reduction mechanism having a two-stage configuration composed of a planetary gear speed reducer or the like. The reduction mechanism unit 502 decelerates the rotation of the motor shaft at a predetermined reduction ratio and transmits the rotation to the output shaft 503. One end of the output shaft 503 in the housing 50B is rotatably supported by a bearing holder 504 installed adjacent to the speed reduction mechanism portion 502. The output shaft 503 is a so-called trapezoidal screw. A guide tube and coil spring (not shown) are provided around the output shaft 503 in the housing 50B. The guide tube guides the movement of the inner tube 505. The coil springs extend within the housing 50B and the housing 50C and always urge the housing 50C out of the housing 50B.

An inner tube 505 extends in the housing 50C. The fixing portion 52 at the end of the housing 50C is screwed into the inner tube 505 by a screw structure and is integrally fixed to the inner tube 505. The inner tube 505 is inserted into the guide tube. A nut member is fixed to one end of the inner tube 505 on the insertion side. When the fixing portion 52 is connected to the tailgate 3, the nut member cannot perform a rotational movement about the rotation axis of the motor 500. As a result, the nut member moves along the rotation axis direction via the screw connection in accordance with the rotation of the output shaft 503. Along with this, the inner tube 505, the fixing portion 52, and the housing 50C, which are directly or indirectly fixed to the nut member, also move.

Based on the structure as described above, for example, when the motor 500 is rotationally driven in the positive direction, the output shaft 503 rotates at a predetermined reduction ratio, and the housing 50C moves in the direction of exiting the housing 50B accordingly. As a result, the actuator 5 extends and the tailgate 3 opens in the opening direction. On the other hand, when the motor 500 is rotationally driven in the opposite direction, the housing 50C moves in the direction of entering the housing 50B. As a result, the actuator 5 contracts and the tailgate 3 closes in the closing direction.

[Door speed control-target speed map]
FIG. 5 shows a configuration example of a target speed map 200 related to door speed control in the automatic opening / closing control of the tailgate 3. In this target speed map 200, the position of the tailgate 3 (L. Corresponds to the door position) shown on the horizontal axis and the set target speed (V) related to the speed control of the motor 500 of the actuator 5 shown on the vertical axis. ) Is stipulated. The controller 2 sets the speed of the actuator 5 with respect to the motor 500 based on the target speed map 200 at the time of opening or closing in the automatic opening / closing control of the tailgate 3, which is a suitable setting target according to the position L of the tailgate 2. The speed is controlled to be V. The controller 2 controls the rotational state of the motor and the open / closed state of the tailgate 3 based on the set target speed V. For control, the controller 2 detects the actual speed of the motor 500 based on the rate of change of the rotation angle of the motor shaft of the motor 500 by using the pulse count value of the detection signal SIG3 of the rotation sensor 8, and the tailgate 3 Position L is calculated. Further, the controller 2 detects the drive current value of the motor 500 flowing in the drive circuit of the drive circuit board 41 for control. Based on the target speed map 200, the controller 2 controls to change the speed of the motor 500 according to the position L while comparing the actual speed of the motor 500 with the set target speed V.

The controller 2 determines the duty of the PWM signal according to the set target speed V. The controller 2 calculates an operation amount (for example, a current command value) for bringing the difference between the set target speed V and the actual speed close to zero. Further, the controller 2 calculates an operation amount (for example, a voltage command value) for bringing the difference between the current command value and the drive current value close to zero. This voltage command value represents the duty of the PWM signal. The controller 2 generates a PWM signal according to the finally determined output duty, and gives the control signal SIG2 including the PWM signal to the drive control board 41. The drive control board 41 switches and controls each switching element in the drive circuit according to the PWM signal, and rotationally drives the motor 500 of the actuator 5. Specifically, when the motor 500 is rotated in the forward direction, the controller 2 fixes one of the two switching elements of the drive circuit to off, and controls the other two switching elements by a PWM signal. When the motor 500 is rotated in the opposite direction, the controller 2 fixes the other two switching elements of the drive circuit to off, and controls the other two switching elements by the PWM signal.

The map example of FIG. 5 shows a setting example in the case of performing automatic opening operation control from the fully closed position L1 to the fully opened position L2. The position L is represented by a pulse count value based on the rotation sensor 8 described above, and has a range from the fully closed position L1 to the fully open position L2. The fully closed position L1 is a position corresponding to a fully latched state in which the tailgate 3 is completely closed. The fully open position L2 is a position corresponding to the fully open state in which the tailgate 3 is fully opened. In the map, the solid line corresponds to the set target speed V, and the broken line indicates the map speed VM, the gradual increase speed VU, and the gradual decrease speed VD. As shown in the figure, this map example is roughly mountain-shaped so that the set target speed V is small near the fully closed position L1 and near the fully open position L2, and the set target speed V is large at an intermediate position between them. Has characteristics. By controlling the door speed using such a map, it is possible to realize suitable automatic opening / closing control that achieves both safety and efficiency.

This map has control of each section of section T1, section T2, section T3, and section T4 in the automatic opening operation control direction from the fully closed position L1 to the fully open position L2. In the section T1 from the fully closed position L1, the set target speed V is set to a preset constant start speed VS, and the duty of the PWM signal is set to the initial duty.

Next, in the section T2 from the position LA, the set target speed V is gradually increased as the distance from the fully closed position L1 is along the gradual increase speed VU at a predetermined rate. At this time, the controller 2 generates a duty that gradually increases from the initial duty at a preset rate at each predetermined control cycle. The controller 2 compares the map speed VM with the gradual increase speed VU, and switches the set target speed V from the gradual increase speed VU to the map speed VM at the position LB where the gradual increase speed VU is larger than the map speed VM.

Next, in the section T3 from the position LB, the set target velocity V is set along the map velocity VM, rises with a gentle positive slope, reaches the maximum value at the intermediate position LC, and then is gentle. It decreases with a negative slope. The controller 2 compares the map speed VM and the gradual deceleration VD, and switches the set target speed V from the map speed VM to the gradual deceleration VD at the position LD where the gradual deceleration VD is smaller than the map speed VM.

Next, in the section T4 from the position LD, the set target speed V is set along the gradual deceleration VD at a preset rate, gradually decreases as it approaches the fully open position L2, and at the fully open position L2, the predetermined end. The speed is set to VE.

As described above, the speed of the tailgate 3 during the automatic opening operation continuously changes to a suitable speed from the fully closed position L1 to the fully open position L2. In particular, in the vicinity of the fully closed position L1 and the vicinity of the fully open position L2, the operation can be performed at a relatively slow speed, and the vibration of the tailgate 3 can be suppressed. Further, as a result, the user's operability can be improved, and the operation can be efficiently performed in the intermediate position region. The door speed control example using the map is the case of the automatic opening operation control, but the same control is possible in the case of the automatic closing operation control starting from the fully open position L2.

[Lock device-latch mechanism]
FIG. 6 shows a configuration example of the latch mechanism 60 in the locking device 30. (A), (B), and (C) of FIG. 6 show the transition of the state of the latch mechanism 60. The state (A) is an open state, in other words, an unlocked state. The state (B) is a half-latch state. The state (C) is a full latch state, in other words, a locked state. An example of transitioning from the open state of (A) to the full-latch state of (C) via the half-latch state of (B) when the tailgate 3 is closed will be described. In addition, as explanatory directions, two directions R1 and R2 perpendicular to the X direction, and clockwise RA and counterclockwise RB as rotation directions with the X direction as the rotation axis are shown.

The latch mechanism 60 has a striker as a first latch portion 61, a latch member 63 as a second latch portion 62, a ratchet lever 64, and the like. Not limited to this, the first latch portion 61 and the second latch portion 62 may be provided in the opposite positional relationship. The striker indicates a case where a steel rod having a circular cross section extends in the X direction, which is the vertical direction of the drawing. The striker has a substantially U-shape and has an opening between the striker and the vehicle body. In the figure, numbers "1" to "4" are added to represent the transition state of the position relative to the striker with respect to the second latch portion 62.

First, as shown in (A), the latch member 63 has a notch 63a, a first ratchet engaging portion 63b, and a second ratchet engaging portion 63c. When the tailgate 3 is closed, the striker enters the notch 63a of the latch member 63 as in the change from "1" to "2" in (A). In other words, the notch 63a engages the striker. The latch member 63 is constantly urged in the counterclockwise direction RB by the coil spring 63e. When the striker enters the notch 63a, the latch member 63 rotates clockwise RA about the rotation axis C1. In the open state of (A), the ratchet switch 65, the half-latch switch 66, and the full-latch switch 67 are all in the off state (“OFF”).

Next, as shown in (B), the state of the latch member 63 with respect to the striker changes from "2" to "3" as the closing operation progresses. That is, the striker enters the depth of the notch 63a, and the latch member 63 further rotates clockwise RA about the rotation axis C1. As a result, the half latch switch 66 is first turned on (“ON”) by the tip 63d of the latch member 63. After that, the ratchet lever 64 rotates clockwise RA around the rotation axis C2. As a result, the tip 64a of the ratchet lever 64 engages with the first ratchet engaging portion 63b, and the ratchet switch 65 is also turned on by the tip 64d of the ratchet lever 64.

A half-latch switch 66 and a full-latch switch 67 are provided in the vicinity of the latch member 63. The half-latch switch 66 is a switch capable of detecting a half-latch state. When the tip portion 64a of the ratchet lever 64 is engaged with the first ratchet engaging portion 63b as in (B), the half-latch switch 66 is turned on by contact with the tip portion 63d. Become. The full latch switch 67 is a switch capable of detecting a full latch state. The full latch switch 67 is brought into contact with the tip 63d when the tip 64a of the ratchet lever 64 is engaged with the second ratchet engaging portion 63c of the latch member 63 as in (C). , Turns on.

Each ratchet engaging portion of the first ratchet engaging portion 63b and the second ratchet engaging portion 63c is engaged with the tip portion 64a of the ratchet lever 64 according to the state of rotation of the latch member 63. This engagement prevents the latch member 63 from rotating in the counterclockwise direction RB, which is the unlocking direction.

The ratchet lever 64 can rotate about the rotation shaft C2. The ratchet lever 64 is constantly urged in the clockwise RA by the spring force of the coil spring 64b. The door handle 31 described above is connected to the ratchet lever 64. When the user operates the door handle 31, the ratchet lever 64 is rotated counterclockwise RB.

A ratchet switch 65 is provided in the vicinity of the ratchet lever 64. When the ratchet switch 65 is such that the tip portion 64a of the ratchet lever 64 is engaged with the first ratchet engaging portion 63b or the second ratchet engaging portion 63c of the latch member 63 as in (B) and (C). In addition, it is turned on by contact with the tip portion 64d.

The lock device 30 is provided with a closure 68 that is reciprocated by the drive motor M1. The closure 68 is a mechanism that automatically rotates the latch member 63 in order to assist the transition from the half-latch state to the full-latch state. The controller 2 drives and controls the drive motor M1 by the drive control signal SIG8 of FIG.

Next, when both the half latch switch 66 and the ratchet switch 65 are turned on, the drive motor M1 of the closure 68 is rotationally driven in the forward direction, the closure 68 is projected toward the latch member 63 in the direction R2, and the latch is latched. It corresponds to a part of the member 63. As a result, the latch member 63 is rotated clockwise RA about the rotation axis C1, the engagement between the tip portion 64a of the ratchet lever 64 and the first ratchet engaging portion 63b is released, and the ratchet switch 65 is temporarily turned off. Be in a state.

After that, when the closure 68 further protrudes in the direction R2, the state of the striker changes from "3" to "4" as shown in (C). As a result, the tip 64a of the ratchet lever 64 engages with the second ratchet engaging portion 63c, and the ratchet switch 65 is turned on again by the tip 63d of the latch member 63. Further, the full latch switch 67 is turned on by the tip 63d of the latch member 63.

When both the full latch switch 67 and the ratchet switch 65 are turned on, the drive motor M1 of the closure 68 is rotationally driven in the opposite direction, and the closure 68 is returned to the initial position as in (A). In this way, the latch mechanism 60 is in a fully latched state at the fully closed position.

As described above, in the open state as the latch switch state, the three switches are in the off state. In the half-latch state, the ratchet switch 65 and the half-latch switch 66 are turned on. In the full latch state, the ratchet switch 65 and the full latch switch 67 are turned on.

Further, although the details are omitted, the lock device 30 is provided with a releaser 69 that is reciprocated by the drive motor M2. The releaser 69 is a mechanism for releasing the engagement between the tip portion 64a of the ratchet lever 64 and each ratchet engaging portion of the latch member 63. In other words, the releaser 69 is a mechanism that automatically rotates the ratchet lever 64 in order to assist the transition from the full latch state to the half latch state. The controller 2 drives and controls the drive motor M2 by the drive control signal SIG9 of FIG. When the drive motor M2 is rotationally driven in the forward direction, the releaser 69 is activated and the ratchet lever 64 is rotated counterclockwise RB against the spring force of the coil spring 64b. As a result, the engagement between the tip portion 64a of the ratchet lever 64 and each ratchet engaging portion of the latch member 63 is released. It is also possible to omit the closure 68 and the releaser 69 in the latch mechanism 60, or to operate the closure 68 and the releaser 69 with the same drive motor.

[Sleep control function]
An example of the sleep control function by the controller 2 is as follows. As a state related to automatic open / close control, the controller 2 confirms a predetermined sleep condition in the normal mode (in other words, the active state), and if the sleep condition is satisfied, the power saving mode (in other words, the sleep state) is changed from the normal mode. Transition to sleep. The sleep condition includes, for example, a case where the tailgate 3 is stationary and there is no opening / closing operation from the switch 9 or the door opening / closing switch 32 for a certain period of time or more.

The normal mode is a state in which the motor 500 or the like of the actuator 5 can be operated, and the power saving mode is a state in which the motor 500 or the like of the actuator 5 is not operated. In the normal mode, the controller 2 normally operates based on the supply of normal power and controls each part. For example, the controller 2 monitors the state of each sensor (including each switch of the rotation sensor 8 and the lock device 30) and the like, in other words, acquires a detection signal and the like at a predetermined frequency at a predetermined time. On the other hand, in the power saving mode, the controller 2 reduces the frequency of the state monitoring operation for each sensor or the like portion as compared with the normal mode, or stops the monitoring operation. As a result, the power consumption is reduced in the power saving mode.

The controller 2 confirms a predetermined recovery condition in the power saving mode, and if the recovery condition is satisfied, shifts from the power saving mode to the normal mode. The return condition includes, for example, a case where the ignition switch is turned on, or a case where an opening / closing operation is generated from the switch 9 or the door opening / closing switch 32. Further, the return condition is that when the tailgate 3 is moved by the user's manual operation, or when the tailgate 3 is closed from the open state due to a malfunction or an external force (for example, the lower side is dropped), the power generation by the motor 500 is generated. The case where the action is detected based on the action is mentioned.

[Emergency opening operation mechanism]
The user can open the locked tailgate 3 from the passenger compartment side in an emergency by manually operating the emergency opening operation mechanism 33 described above. With this operation, the tailgate 3 goes into an open state through a half-latch state. The user opens the tailgate 3 so that the opening 105 in FIG. 2 has a desired size. At this time, the position of the tailgate 3 can be various positions other than the fully closed position L1. At this time, the controller 2 cannot grasp the position of the tailgate 3 in the power saving mode during sleep.

The controller 2 returns from the power saving mode during sleep to the normal mode according to the return conditions such as the operation of the switch 9, and refers to the information such as the door position information held in the door position memory 202 of FIG. To do. The door position referred to at this time is the position of the tailgate 3 immediately before sleep before using the emergency opening operation mechanism 33, and may be different from the current actual position.

As described above, regarding the automatic opening / closing control mechanism of the tailgate 3, the controller 2 cannot temporarily grasp the actual position of the tailgate 3 depending on the combination of the sleep control and the use of the emergency opening operation mechanism 33. It can be a situation. In such an exceptional situation, even if the controller 2 performs the above-mentioned door speed control using the past door position information at the time of return, it may not be possible to bring about an appropriate action.

Therefore, the controller 2, which is the vehicle opening / closing body drive control device of the first embodiment, controls to update the door position information of the door position memory 202 according to the change of the latch switch state before and after sleep as described below. It has a function (update control unit F6 in FIG. 1).

[Control flow]
FIG. 7 shows a control flow including the door position update control by the controller 2. The flow of FIG. 7 has steps S1 to S12, and will be described below in the order of steps. The control flow of FIG. 7 shows a control example in the vicinity of the fully closed position L1 of the tailgate 3.

In step S1, the controller 2 detects the operating state of the switch 9 and the open / close switch 32 at each predetermined control time point in the activated state. The controller 2 controls the automatic opening and closing of the tailgate 3 in response to, for example, the opening / closing signal SIG1 from the switch 9.

In step S2, the controller 2 grasps the state related to the latch mechanism 60 based on the detection signal from each switch of the latch mechanism 60 of the lock device 30 at each control time point, and sets the latch switch state memory 201 as the latch switch state. Remember. This latch switch state includes the above-mentioned open state, half-latch state, and full-latch state.

In step S3, the controller 2 grasps the state regarding the opening / closing position of the tailgate 3 based on the detection signal SIG3 of the rotation sensor 8 at each control time point, and stores it in the door position memory 202 as door position information. The door position is a position within the range from the fully closed position L1 to the fully open position L2 in FIG.

In step S4, the controller 2 confirms the sleep condition. If the sleep condition is satisfied (YES), the process proceeds to step S5, and if the sleep condition is not satisfied (NO), the process returns to step S1.

In step S5, the controller 2 shifts from the normal mode to the power saving mode to sleep.

In step S6, the controller 2 confirms the return condition. If the return condition is satisfied (YES), the process proceeds to step S7.

In step S7, the controller 2 shifts from the power saving mode to the normal mode.

In step S8, immediately after returning, the controller 2 refers to the latch switch state information of the latch switch state memory 201 and detects the current latch switch state from each switch of the lock device 30. The former latch switch state information referred to at this time is information stored in the latch switch state memory 202 in step S2 before sleep. Then, the controller 2 compares the latch switch state represented by the latch switch state information of the latch switch state memory 201 with the detected current latch switch state.

In step S9, the controller 2 confirms whether or not there is a change between the latch switch state before sleep and the latch switch state after returning as a result of the comparison in step S8. If there is a change (YES), the process proceeds to step S10, and if there is no change (NO), the process proceeds to step S12. Here, the case where there is a change includes a case where the state of the latch mechanism 60 changes due to the operation of the emergency opening operation mechanism 33 by the user and the tailgate 3 is opened.

In step S10, the controller 2 considers that there is a difference in the recognition of the position of the tailgate 3 due to the above change, and updates so as to erase the door position information held in the door position memory 202. To do. This door position information is the information stored in step S3 before sleep, and is old information that does not match the current actual door position. By erasing the door position information, the controller 2 is prevented from being used for the subsequent automatic opening / closing control. The information processing is not limited to erasing, and the door position information may not be used for control.

In step S11, the controller 2 is in an exceptional situation in which the emergency opening operation mechanism 33 may have been used. Therefore, the automatic opening / closing control of the tailgate 3, particularly the door based on the target speed map 200 described above. Control the speed so that it is not temporarily controlled. Specifically, the controller 2 gives the drive control board 41 a control signal SIG2 indicating a temporary prohibition command regarding automatic opening / closing control. The drive control board 41 temporarily prevents the actuator 5 from being driven according to the control signal SIG2. As a result, during this prohibition, the tailgate 3 does not automatically open and close, and the user can only manually open and close it. As a result, the automatic opening / closing operation of the tailgate 3 at the speed setting based on the erroneous position recognition is prevented.

After that, when the position of the tailgate 3 is once returned to the fully closed state L1 or the fully open state L2 after a certain period of time has elapsed, the prohibition on automatic opening / closing control is released and the normal control operation is restored. The controller 2 starts a normal control operation after confirming that the position of the tailgate 3 is once set to the fully closed position L1 or the fully open position L2 by, for example, a manual operation. For example, the controller 2 transmits a command for releasing the prohibition to the drive control board 41. In the first embodiment, the door position is calculated according to the pulse of the rotation sensor 8. Therefore, after returning from sleep, the tailgate is temporarily grasped in order to accurately grasp the position of the tailgate 3. 3 needs to be in the fully closed state L1 or the fully open state L2.

On the other hand, in step S12, the controller 2 considers that there is no problem in recognizing the position of the tail game 3 because the above change has not occurred, and automatically controls the opening and closing of the tail gate 3 based on the door position information of the door position memory 202. To resume. After step S11 and step S12, the flow ends, the flow returns to the beginning, and the same process is repeated.

[Effects, etc.]
As described above, according to the vehicle opening / closing body drive control device of the first embodiment, even if the recognition of the position of the tailgate 3 is deviated, the door position information is updated in cooperation with the latch switch state. It is said. As a result, the function of the automatic opening / closing control mechanism can be improved, and the user's operability and safety can be improved. According to the control example of FIG. 7, it is possible to prevent an erroneous automatic opening / closing operation even when the position shift occurs due to the operation of the emergency opening operation mechanism 33 in the fully closed state of the tailgate 3. For example, in the door speed control based on the map of FIG. 5, it is assumed that the actual door position has changed from the fully closed position L1 before sleep to the position in the section T2 after returning. In that case, the latch switch state has changed from the full latch state before sleep to the open state after returning. In this case, when returning, it is prohibited to start the automatic opening operation at the set target speed that matches the fully closed position L1 before sleep. In this way, even in an exceptional situation where the user uses the emergency opening operation mechanism 33, it is possible to prevent the tailgate 3 from moving unintentionally by the user.

[Modification example]
The following is also possible as a modification of the first embodiment. As a modification of the control example of FIG. 7, automatic opening / closing control corresponding to an exceptional situation may be applied at the time of step S11 or step S12. For example, at that time, the controller 2 may set the door speed to a predetermined speed lower than the speed at the time of normal automatic opening / closing control, and perform the opening operation up to the fully open position L2.

Although the first embodiment shows an improvement regarding the automatic opening / closing control function, the same control as that of the first embodiment, that is, the door position information according to the latch switch state, is also provided for the other functions controlled by using the door position. Controls such as updating and temporarily prohibiting functions can be applied. Examples of other functions in the modified example include a pinch prevention function for preventing an object or body from being pinched between the vehicle body and the door. For example, in the pinch prevention function, when the presence / absence of control and the control conditions are defined according to the door position, the control of the first embodiment can be similarly applied.

Although the present invention has been specifically described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist. In the first embodiment, the tailgate 3 has been described as a door that is an opening / closing body, but the present invention is not limited to this, and the same can be applied to other opening / closing bodies such as a sliding door and an auto hinge door.

1 Vehicle control device 2 Controller (Vehicle opening / closing body drive control device)
3 Tailgate 4 Tailgate device 5 Actuator 8 Rotation sensor 9 Switch 30 Lock device 31 Door handle 32 Door open / close switch 33 Emergency opening operation mechanism 40 Drive unit 41 Drive control board 60 Ratchet mechanism 61 1st latch part 62 2nd latch part 65 Ratchet switch 66 Half latch switch 67 Full latch switch 68 Closer 69 Releaser F1 Actuator control unit F2 Door position detection unit F3 Latch state detection unit F4 Door speed control unit F5 Sleep control unit F6 Update control unit 200 Target speed map 201 Latch switch status memory 202 Door position memory SIG1, SIG4 Open / close signal SIG2 Control signal SIG3 Detection signal SIG5, SIG6, SIG7 Detection signal SIG8, SIG9 Drive control signal 100 Vehicle 101 Cable 102 Roller assembly 105 Opening 500 Motor 501 Brush holder unit 502 Deceleration mechanism 503 Output Shaft 504 Bearing holder 505 Inner tube 50A, 50B, 50C Housing 51, 52 Fixed part 53 Connector part L1 Fully closed position L2 Fully open position VS Start speed VM Map speed VU Gradual increase speed VD Gradual deceleration speed VE Termination speed T1, T2, T3, T4 Section 63 Latch member 64 Ratchet lever 63a Notch 63b First ratchet engagement part 63c Second ratchet engagement part 63d, 64a, 64d Tip part 63e, 64b Coil spring M1, M2 Drive motor C1, C2 Rotating shaft

Claims (6)

A vehicle opening / closing body drive control device that controls the opening / closing drive by a driving device having a drive source for opening / closing the opening / closing body provided in the vehicle.
An opening / closing body position detecting unit that detects the position of the opening / closing body,
An opening / closing body position memory that stores the position of the opening / closing body detected by the opening / closing body position detection unit as the opening / closing body position information, and
A latch state detection unit that detects the state of a latch mechanism that can engage the vehicle body and the opening / closing body to hold the opening / closing body in a fully closed position.
A latch state memory that stores the state of the latch mechanism detected by the latch state detection unit as latch state information, and
A drive control unit that controls the opening / closing operation of the opening / closing body according to the position of the opening / closing body,
A sleep control unit that controls the drive source to shift from an operable normal state to a power saving state according to a sleep condition, and to shift from the power saving state to the normal state according to a recovery condition.
With
The opening / closing body position memory stores the position of the opening / closing body detected by the opening / closing body position detecting unit when the sleep control unit shifts from the normal state to the power saving state as the opening / closing body position information. ,
The latch state memory stores the latch state detected by the latch state detection unit when the sleep control unit shifts from the normal state to the power saving state as the latch state information.
The drive control unit is stored by the latch state memory and the current state of the latch mechanism detected by the latch state detection unit when the sleep control unit returns from the power saving state to the normal state. The state of the latch mechanism indicated by the latch state information is compared, and if there is a change, the opening / closing body position information stored in the opening / closing body position memory is controlled not to be used.
Open / close body drive control device for vehicles. When the sleep control unit returns from the power saving state to the normal state, the drive control unit prohibits the automatic opening / closing drive of the opening / closing body if there is a change in the latch state information. To control,
The vehicle opening / closing body drive control device according to claim 1. When the drive control unit returns from the power saving state to the normal state by the sleep control unit, if there is a change in the latch state information, the open / close body position detection unit detects the opening / closing. After grasping that the position of the body has returned to the fully closed position or the fully open position, the prohibition of the automatic opening / closing drive of the opening / closing body is released.
The vehicle opening / closing body drive control device according to claim 2. The drive control unit controls to change the speed of automatic opening / closing drive of the opening / closing body according to the position of the opening / closing body.
The vehicle opening / closing body drive control device according to any one of claims 1 to 3. In the vehicle opening / closing body drive control device according to any one of claims 1 to 4.
Further, it has a rotation sensor that detects the rotation state of the drive source.
The opening / closing body position detecting unit calculates the position of the opening / closing body from the rotating state detected by the rotation sensor.
Open / close body drive control device for vehicles. The opening / closing body is a tailgate or a sliding door.
The vehicle opening / closing body drive control device according to any one of claims 1 to 5.

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