JP4149860B2 - Opening and closing body drive control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drive control device for an opening / closing body mainly applied to an opening / closing body such as an electric slide door, an electric back door, and an electric trunk provided in an automobile.
[0002]
[Prior art]
An electric sliding door (opening / closing body) provided in an automobile detects an ON state of an operation switch linked to an external door handle or the like, and slides by driving means such as a motor. The door is provided with a lock body including a latch and a locking plate. A striker for engaging the latch of the lock body and holding the door is provided on the body side of the automobile. A closure mechanism is configured by a mechanism that holds the door between the lock body and the striker.
[0003]
P0 point is provided at an intermediate position between the half latch position and the full latch position in order to stop the latch of the sliding door at the half latch position where the latch is barely engaged with the striker and the fully latched full latch position. . When the door position reaches the point P0, the slide drive device is controlled to stop the sliding movement of the door (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
JP-A-11-200708 (FIG. 10)
[0005]
[Problems to be solved by the invention]
However, in the prior art, the driving force (duty) of the motor of the slide mechanism, which is an opening / closing drive device, is operated with a constant or increased until a predetermined intermediate position P0. For this reason, in addition to the door closing force of the closure mechanism, the driving force of the motor of the driving means is excessively added. As a result, the driving force of the motor is applied as an overload to the drive transmission system such as the cable and gear of the slide mechanism.
[0006]
Due to this overload, the durability of the slide drive device may be reduced. Also, when the door is driven by a cable or the like, tension is applied to both ends of the cable for the purpose of absorbing the slack generated on the cable feeding side where the driving force of the motor is not applied and the permanent elongation generated on the cable. A tensioner device is provided. However, when the motor is stopped at the P0 position, the tensioner device that has been operated by the driving force of the motor is returned to the original position, thereby generating a door opening direction pulse. This makes it difficult for the rotation sensor that detects the door position to accurately detect the door position, and it is difficult to accurately control the opening / closing drive device.
[0007]
The present invention has been made in view of the problems as described above in which the prior art has, the driving speed of the electric sliding door after the closure mechanism is actuated, suit operating speed of the closure mechanism, the closing drive device By preventing the overload applied to the cable or driving motor as a traction means and applying a driving force that does not return the tensioner device to its original position, the generation of unnecessary position pulses can be suppressed. An object of the present invention is to provide a drive control device for an opening / closing body that can be stably reset.
[0008]
[Means for Solving the Problems]
According to the present invention, the above problem is solved as follows.
(1) A latch that can be rotated between a full latch position that engages with a striker and holds the open / close body in a fully closed position, and a half latch position that engages with the striker and holds the open / close body in a half-door position. A lock body having means, switch means for detecting a half latch area including a half latch position of the latch means and a full latch area including a full latch position, and the latch based on the start of detection of the half latch area of the switch means The mechanism is driven by a closure motor and moved from the half-latch position to the full-latch position, whereby the opening / closing body is moved from the half-door position to the fully-closed position, and opened and closed by a traction means pulled by the drive motor. An opening / closing body drive control device comprising an opening / closing drive device for moving the body. After a predetermined time has elapsed since the start of the detection of the half-latch area, the duty ratio of the drive motor of the opening / closing drive device is changed at a preset change rate to change the moving speed of the opening / closing body, The closing mechanism is controlled so as to be slightly slower than or substantially the same as the closing speed at which the opening / closing body is fully closed from the half-door position of the opening / closing body, and the switch means detects the full latch position of the latch means. An open / close drive control circuit unit for stopping the drive motor before starting.
[0009]
( 2 ) In the above item (1) , the opening / closing drive control circuit is configured to change the duty ratio of the opening / closing body after a preset time has elapsed since the duty ratio of the drive motor of the opening / closing drive device was changed at a preset change rate . Perform position pulse reset and motor stop.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0011]
FIG. 1 shows an automobile (1) to which an embodiment of the present invention is applied. The automobile (1) has a door (2) for passengers to get on and off, and a door handle (3) for the passenger to hold to open and close the door (2) is provided on the side of the door (2). It has been. The door (2) is guided by a slide guide (5) provided on the side surface of the automobile (1) and can be opened and closed by sliding in the front-rear direction. The region between the door position and the door position can be slid and moved by the closure mechanism (9) from the half door position to the fully closed position. The opening / closing drive device (14) and the closure mechanism (9) are controlled by the control device (4).
[0012]
FIG. 2 shows the control device (4). The control device (4) has an open / close drive control circuit unit (6) for controlling the open / close drive device (14) and a closure control circuit unit (8) for controlling the operation of the closure mechanism (9). The opening / closing drive control circuit section (6) is provided with a timer (7) for generating a basic control timing related to the sliding movement of the door (2).
[0013]
A power source (18) such as a battery mounted on the automobile (1) is connected to the control device (4), and electric power necessary for operation is supplied. An operation switch (19) is connected to the open / close drive control circuit section (6), and this operation switch (19) is turned on and off in conjunction with the operation of the door handle (3), a keyless remote controller (not shown), or the like. Create a state.
[0014]
Inside the door (2), the lock body (24) capable of holding the door (2) in the fully closed position or the half door position , and the door (2) is forcibly moved from the half door position to the fully closed position. A closure mechanism (9) is provided.
[0015]
The lock body (24) is completely engaged with a striker (not shown) fixed to the vehicle body side, and is fully engaged with the full latch position corresponding to the fully closed position of the door (2) and the striker. (Not shown) that can be rotated to a half latch position corresponding to the half door position and an open position from which the striker is disengaged, and an illustration that engages with the latch and that can restrain the latch to the full latch position and the half latch position. Latch means comprising an approximate locking plate is provided.
[0016]
The closure mechanism (9) has a closure motor (13) and is connected to the latch means via a gear, a link, etc., and the latch of the latch means is moved to the half latch position with the closing movement of the door (2). When moved, the closure motor (13) is driven to move the latch to the full latch position, and the door (2) is forcibly moved from the half door position to the fully closed position.
[0017]
The speed at which the closure mechanism (9) drives the closure motor (13) to close the door (2) is constant. In the embodiment of the present invention, it is assumed that the door (2) is closed at a speed of 150 millimeters / second for the sake of explanation. This speed is set depending on the type of vehicle, the shape of the door (2), the weight, and the like.
[0018]
(10) is a half switch for detecting the half door position and the fully closed position of the door (2), that is, the half latch area including the half latch position of the latch means and the full latch area including the full latch position. (11) is a full switch for starting detection from an area before the full latch position of the latch means. (12) is a neutral switch (12) for detecting the neutral position of the gear, link, etc. of the closure mechanism (9). The half switch (10) is connected not only to the closure control circuit unit (8) but also to the open / close drive control circuit unit (6), and inputs the respective signals of the ON state and the OFF state. . In order to detect the half latch position (half door position) with the half switch (10), the detection of the half latch position is detected by switching from the ON state to the OFF state and detecting the detection of the half latch area. It is said.
[0019]
The open / close drive device (14) electrically connected to the open / close drive control circuit section (6) includes a rotation sensor (15), an electromagnetic clutch (16), a drive motor (17), and a door (2). Connected to the drive cable (22) constituting the connected traction means, the cable pulleys (23) and (23) provided at the front and rear ends of the slide guide (5) and guiding the drive cable (22), and the drive cable (22) Cable tensioners (21) and (21) that perform dynamic adjustment so that a constant tension is generated, and a cable drum (20) that wraps the drive cable (22) and applies a drive force.
[0020]
The rotation sensor (15) is formed by a rotary encoder, and outputs an electrical pulse signal in accordance with the rotation of the rotating body interlocking with the drum (20). This pulse signal is used as a position pulse for detecting the position of the door (2). The electromagnetic clutch (16) is provided for transmitting the power of the drive motor (17) to the drum (20). Control of transmission / non-transmission of the power of the drive motor (17) to the drum (20) by the electromagnetic clutch (16) is performed by control by the opening / closing drive control circuit unit (6). A constant tension is applied to the drive cable (22) by the cable tensioners (21, 21), and the tension is maintained appropriately.
[0021]
FIG. 4 is a flowchart for explaining the control of the drive control device for the opening and closing body according to the embodiment of the present invention.
[0022]
At the start (fully opened state) (S1), the sliding movement of the door (2) is started. In this start (S1), by operating the door handle (3) of the door (2), the operation switch (19) (start-up SW) is turned on (S2). ) Control is started.
[0023]
When the ON state of the operation switch (19) is confirmed, a buzzer for alerting the passenger is sounded (S3). After the buzzer sounds, the electromagnetic clutch (16) operates (S4), and the drive motor (17) starts rotating (S5). The power generated by the rotation of the drive motor (17) is transmitted to the drum (20) to rotate the drum (20). When the drive cable (22) is wound around the drum (20), the door (2) slides in the closing direction.
[0024]
When the door (2) moves to the vicinity of the half door position and the latch means reaches the half latch area, it is confirmed that the half switch (10) is turned off (S6). Here, referring to FIG. 5, the closure mechanism (9) starts its operation at the same time when the OFF state of the half switch (10) is confirmed (S6) (S16). The closure motor (13) starts to rotate in the forward direction (S17). The closing speed of the closure mechanism (9) driven by the closure motor (13) is set to 150 millimeters / second. When it is confirmed that the half switch (10) is in the OFF state and the full switch (11) is also in the OFF state (S18), the closure motor (13) starts to rotate in the reverse direction. When it is confirmed that the neutral switch (12) is in the OFF state (S20), the closure motor (13) stops (S21), and a series of operations of the closure mechanism (9) is completed (S22).
[0025]
On the other hand, when it is confirmed that the latch means enters the half latch area and the half switch (10) is in the OFF state (S6), the timer (7) starts measuring time (S7). The time of this start is set to 0 second, and the time measurement is continued in the timer (7), and continues until 100 milliseconds have passed (S8). The time of 100 milliseconds is equivalent to the time when the latch means starts rotating in the direction of the full latch area by the closure mechanism (9) from the start of detection of the half latch area (half latch position), and the latch is surely As long as the rotation is started, this timing is not limited to 100 milliseconds. For example, it can be appropriately selected depending on the shape of the door (2), the operating speed of the closure mechanism (9), the speed of sliding movement, and the like.
[0026]
In the steps (S7) and (S8), the timer (7) measures 100 milliseconds, but instead of this timing, as shown in FIG. 6, the half switch (10) is turned off. You may advance to the next step at the timing of switching from the state to the ON state.
[0027]
When 100 milliseconds have elapsed, the output of the drive motor (17) is fixed (S9). This output fixing is performed by controlling the duty ratio of the driving power of the driving motor (17). The output of the drive motor (17) continues to increase with the target of 100% duty ratio after the rotation is started in (S5). This requires a certain amount of momentum to close the door (2), must resist the reaction force of the weather strip provided on the automobile (1) side, and the door (2) is in the half latch position. This is because it is required to slide at a low speed for safety. When 100 milliseconds have elapsed, the duty ratio of the drive power of the drive motor (17) is approximately 60 to 70 percent.
[0028]
By fixing the output of the drive motor (17), the moving speed of the door (2) is kept at a predetermined speed. As the movement speed control of the door (2), the first control method fixes the duty ratio when 100 milliseconds have elapsed. (Shown in (a) of FIG. 6). In this state, since the reaction force of the weather strip is applied to the door (2), the moving speed of the door does not increase. In the case of (a), the retracting speed of the door (2) by the closure mechanism (9) is 150 mm / Same as seconds. For this reason, the moving speed of the door (2) and the retracting speed of the closure mechanism (9) become the same, and the output of the driving motor (17) necessary for the sliding movement does not occur excessively, and the opening / closing drive as the opening / closing drive device The device (14) is not overloaded. For example, in the case of (a), control may be performed with a fixed duty ratio (for example, 40 percent) fixed when 100 milliseconds have elapsed.
[0029]
In the second control method, when 100 milliseconds have elapsed, the duty ratio is reduced to about 25 to 35 percent and fixed, and a constant speed movement of 100 millimeters / second is performed (shown in FIG. 6B). ). In this case (b), the pull-in speed of the door (2) by the closure mechanism (9) is lower than 150 millimeters / second. For this reason, the retracting speed of the closure mechanism (9) is slightly faster than the moving speed of the door (2), and the output of the driving motor (17) necessary for the sliding movement is not excessive, and the opening / closing driving device (14) is not overloaded.
[0030]
In the third control method, when 100 milliseconds have elapsed, the duty ratio is decreased by a predetermined value (for example, 2 percent per 20 milliseconds) and fixed to 25 to 35 percent, and a constant speed of 100 millimeters / second is achieved. The movement is performed (shown in FIG. 6C). In the case of (c), the retracting speed of the door (2) by the closure mechanism (9) is lower than 150 millimeters / second. Furthermore, the process of changing the speed to constant speed movement is gradually performed at a change rate of 2%. For this reason, the pull-in speed of the closure mechanism (9) with respect to the movement speed of the door (2) can be slightly increased without a steep change in the slide movement speed, and a drive motor ( The output of 17) is not excessive, and the switching drive (14) is not overloaded. Note that the output of the drive motor (17) in the first to third control methods described above is in a state where tension is properly applied to the tension section (T) shown in FIG. The output is such that the tensioner (21) does not return to the original position (the broken line position of the cable tensioner (21) in FIG. 3).
[0031]
When the time of the timer (7) reaches 500 milliseconds (S10), the position pulse of the door (2) is reset (S11). This position pulse is output from the rotation sensor (15) and corresponds to the rotation of the drum (20).
[0032]
At the same time as the position pulse is reset in (S11), the drive motor (17) stops (S12). Next, the electromagnetic clutch (16) is turned off, and the driving force transmission between the driving motor (17) and the drum (20) is cut off. Next, the stop of the closure motor (13) is confirmed (S14), and all control steps are completed (S15). The confirmation of the stop of the closure motor (13) in (S14) confirms the stop due to the closure motor (13) being stopped (S21) in the operation step of the closure mechanism (9) described above.
[0033]
FIG. 6 is a time chart showing control steps of the opening / closing body drive control device described with reference to FIGS. 4 and 5.
[0034]
The moving speed of the door (2) is indicated by (P1). Similarly, the position of the door (2) is (P2), the ON / OFF state of the half switch (10) is (P3), and the closure motor (13 ) Is indicated as (P4) and the drive motor (17) is indicated as (P5). (P6) shows a half latch area (H / L) which is a half door position, and (P7) shows a full latch area (F / L) which is a fully closed position.
[0035]
The moving speed of the door (2) is gradually reduced so that the door position becomes the lowest speed from the fully closed position to the weather strip contact position. Thereafter, when the motor gradually accelerates and reaches the half latch region (P6), the duty ratio is increased to increase the acceleration and the timer (7) starts measuring time.
[0036]
When the time of the timer (7) reaches 100 milliseconds, the moving speed (P1) of the door (2) is decelerated and controlled to move at the above-mentioned constant speed. The speed of the moving speed (P1) when the state (P3) of the half switch (10) changes from the ON state to the OFF state and then changes from the OFF state to the ON state (end of the half latch area). May be controlled to a constant speed.
[0037]
In conjunction with the transition from the half latch area (P6) to the full latch area (P7), the state (P4) of the closure motor (13) also changes from the ON state to the OFF state and stops. The state (P5) of the drive motor (17) is turned OFF after the position pulse of the rotation sensor (15) is stably reset when the timer (7) reaches 500 milliseconds. To do.
[0038]
The duty ratio of the drive motor (17) is controlled so that the door closing speed and the sliding movement speed by the closure mechanism (9) are equal or less. For this reason, since the cable tensioner (21) does not move due to the tension remaining on the drum (20), the rotation sensor (15) moves unintentionally and outputs an unnecessary position pulse after reset. Can be prevented.
[0039]
In the embodiment of the present invention, the door closing speed by the closure mechanism (9) after a predetermined time elapses after the duty ratio of the driving motor (17) of the opening / closing drive device (14) starts detecting the half latch area. It is set to a constant value equal to or less than that. Therefore, in addition to the door closing force of the closure mechanism (9), the driving force of the drive motor (17) is not excessively applied, and the closure mechanism (9) and the opening / closing drive device (14) perform cooperative control. The door (2) can be fully closed with a driving force without excess or deficiency. As a result, it is possible to prevent the drive force of the drive motor (17) from being applied as an overload to the drive transmission system such as the cable (22) of the opening / closing drive device (14).
[0040]
Since overload caused by excessive driving of the drive motor (17) can be prevented, durability of the drive device of the opening / closing drive device (14) can be improved. Further, when the door (2) is driven by the cable (22), the cable (22) is loosened from the drum (20) by the excessive driving force of the drive motor (17), or the cable ( It is possible to prevent the cable tensioner (21) on the drawing side of the drum (20) of 22) from returning to the original position and generating a pulse in the door opening direction. Thereby, the rotation sensor (15) for detecting the position of the door (2) can accurately detect the position of the door (2), and the opening / closing drive device (14) can be controlled accurately.
[0041]
The present invention is not limited to the above-described embodiment, and can be applied to an opening / closing body such as a swing-type side door, back door, and trunk lid of an automobile.
[0042]
【The invention's effect】
According to the present invention, the driving speed of the electric sliding door after the closure mechanism is actuated, it is possible to match the operating speed of the closure mechanism, an excessive load on the cable or the drive transmission unit is a driving means of the slide mechanism preventing In addition, by applying a driving force such that the cable tensioner does not return to the original position, generation of unnecessary position pulses can be suppressed, and the position pulses can be reset stably.
[0043]
[Brief description of the drawings]
FIG. 1 is an external view of an automobile according to an embodiment of the present invention.
FIG. 2 is a block diagram of a control device according to an embodiment of the present invention.
FIG. 3 shows a driving device for an opening / closing body according to an embodiment of the present invention.
FIG. 4 is a control flowchart of the control device according to the embodiment of the present invention.
FIG. 5 is a control flowchart of the control device according to the embodiment of the present invention.
FIG. 6 is a timing chart of the opening / closing member drive control device according to the embodiment of the present invention;
[Explanation of symbols]
(1) Automobile
(2) Door (opening / closing body)
(3) Door handle
(4) Control device
(5) Slide guide
(6) Open / close drive control circuit
(7) Timer
(8) Closure control circuit
(9) Closure mechanism
(10) Half switch (switch means)
(11) Full switch (switch means)
(12) Neutral switch
(13) Closure motor
(14) Open / close drive device (slide mechanism)
(15) Rotation sensor
(16) Electromagnetic clutch
(17) Drive motor
(18) Power supply
(19) Operation switch
(20) Drum
(21) Cable tensioner
(22) Drive cable (traction means)
(23) Cable pulley
(24) Lock body
(T) Tension section

Claims (2)

There is a latch means that can rotate between a full latch position that engages with the striker and holds the opening / closing body in the fully closed position, and a half latch position that engages with the striker and holds the opening / closing body in the half door position. A lock body, a switch means for detecting a half latch area including a half latch position of the latch means and a full latch area including a full latch position, and the latch means is closed based on the start of detection of the half latch area of the switch means. The opening / closing body is moved by a closure mechanism that moves the opening / closing body from the half-door position to the fully-closed position by driving with a motor and moving from the half-latch position to the full-latching position, and a pulling means that is pulled by the driving motor. An opening / closing body drive control device comprising:
After a predetermined time has elapsed from the time when the switch means starts detecting the half latch region, the duty ratio of the drive motor of the opening / closing drive device is changed at a preset rate of change, and the moving speed of the opening / closing body is changed, The closing mechanism is controlled so as to be slightly slower than or substantially the same as the closing speed at which the opening / closing body is fully closed from the half-door position of the opening / closing body, and the switch means controls the full latch area of the latch means. An opening / closing body drive control device comprising an opening / closing drive control circuit section for stopping the drive motor before detection. The open / close drive control circuit resets the position pulse of the open / close body and stops the motor after a preset time has elapsed since the duty ratio of the drive motor of the open / close drive device was changed at a preset change rate. The opening / closing body drive control device according to claim 1 .

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