JP2013144908A - Closer control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a closer control device for enabling a door shifted into a half-closed condition along with the detection of pinch during closing operation to be closed into a fully-closed condition with operation as intended by a user.SOLUTION: A door ECU 20 controls the drive of a DC motor 11 to select a fully-latched condition, when detecting a half-latched condition, controls the reverse drive of the DC motor 11 to select the half-latched condition and stops the drive of the DC motor 11 along with the selection of the half-latched condition, when detecting the pinch by the door during controlling the drive of the DC motor 11, and restarts the drive control of the DC motor 11 to select the fully-latched condition, when detecting the door closing operation of a re-operation switch 26 after selecting the half-latched condition along with the reverse drive control of the DC motor 11.

Description

  The present invention relates to a closer control device that automatically closes a door in a half door state to a fully closed state.

  Conventionally, as such a closer control device, for example, the one described in Patent Document 1 is known. This device includes an opening / closing body (door) for opening and closing an opening of a vehicle body, a closer mechanism (latch mechanism) for holding the opening / closing body in a half latch position and a fully closed position, and an opening / closing body via the closer mechanism. Driving means for driving the vehicle between the half latch position and the fully closed position, and detecting that the opening and closing body and the vehicle body are caught when the opening and closing body is closed from the half latch position to the fully closed position by the driving means. Pinch detection means and drive that drives the drive means in the reverse direction by driving the drive means in the reverse direction when the pinch detection means detects the pinching, and opens and closes the open / close body to the half latch position and holds it at the half latch position by the closer mechanism. Control means.

  According to this configuration, the object to be pinched can be released from the opening / closing body by the driving means being driven in reverse rotation in accordance with the pinching detection. In addition, even if the driving means is driven in reverse in accordance with the pinching detection, the opening / closing body does not open to the fully open position, so that foreign matter can be prevented from entering from the opening of the vehicle body.

JP 2011-52472 A

  By the way, in Patent Document 1, when the opening / closing body opens to the half latch position in accordance with the reverse drive of the driving means when the pinching is detected, the drive control means holds the opening / closing body at the half latch position by the closer mechanism. The drive means is stopped. The drive control means receives the full-close detection signal that detects that the open / close body is closed from the half-latch position to the fully-closed position (that is, until it recognizes that the open / close body is in the fully closed position), or The drive means continues to be stopped until an open instruction signal is received to open the open / close body from the half latch position toward the fully open position.

  Therefore, when the drive means is closed to the fully closed position by the drive means, an open instruction signal is sent to the drive control means to hold the open / close body at the half latch position by the closer mechanism. And the opening / closing body needs to be opened once toward the fully open position. After that, when the opening / closing body is closed again to the half latch position, the driving means is restarted to close the opening / closing body to the fully closed position.

  As described above, in order to resume the driving of the driving means in the above-described driving stop state despite the user's intention to close the opening / closing body to the fully closed position, the user must Needed to operate in the reverse direction (send instruction signal transmission), which was complicated.

  An object of the present invention is to provide a closer control device capable of closing a door that has shifted to a half-door state upon detection of pinching during a closing operation to an fully closed state by an operation that matches the user's intention. .

  In order to solve the above problems, the invention according to claim 1 is a latch mechanism capable of selectively holding a door in a half-door state and a fully-closed state, and the latch mechanism holds the door in a half-door state. A half-latch detection means for detecting a half-latch state, a full-latch detection means for detecting a full-latch state in which the latch mechanism holds the door in a fully-closed state, and a drive for switching the latch mechanism between the half-latch state and the full-latch state Driving means for driving, driving control means for controlling the driving means so that the latch mechanism is switched to a full latch state when a half-latch state is detected, pinching detection means for detecting pinching by the door, and the driving When the control means drives and controls the drive means, the latch mechanism is half-cut by detecting pinching by the door. And a reversing drive control means for controlling the driving means to reversely drive so as to switch to a half-latch state and stop driving the driving means in accordance with the switching to the half-latch state. A closing operation detecting means for detecting an operation instruction; and a switching operation of the door or a closing operation instruction after the switching of the latch mechanism to a half-latch state in accordance with the reverse drive control of the drive means by the reverse drive control means. And a re-drive control means for resuming the drive control of the drive means so that the latch mechanism is switched to a full latch state by detecting this.

  According to this configuration, for example, when a half-latch state is detected with the closing operation of the door in the open state, the drive unit is driven and controlled by the drive control unit so that the latch mechanism is switched to the full latch state. . At this time, when pinching by the door is detected by the pinching detection unit, the driving unit is reversely driven by the reverse driving control unit so that the latch mechanism is switched to the half latched state, and the half latching state is switched. Accordingly, the driving of the driving means is stopped. Thereafter, when the closing operation detecting means detects the closing operation of the door or an instruction of the closing operation, the driving control of the driving means is resumed so that the latch mechanism is switched to the fully latched state by the redrive control means. The Therefore, for example, the user operates the door (closed operation or close operation instruction) in accordance with the intention of closing the door held in the half-door state to the fully-closed state due to the occurrence of the pinching, and thereby restarts the operation. The drive control of the drive means can be resumed so that the latch mechanism is switched to the full latch state by the drive control means. For this reason, the user can close the door to the fully closed state by an intuitive operation, and the operability can be improved.

  According to a second aspect of the present invention, in the closer control device according to the first aspect, when the re-drive control unit performs re-drive control of the drive unit, the sensitivity of changing the pinch detection sensitivity by the pinch detection unit. The gist is that a change means is provided.

  Normally, when the user operates the door held in a half-door state with the occurrence of pinching (closing operation or instruction for closing operation), pinching is eliminated or pinching does not actually occur. Can be assumed. According to this configuration, when the redrive control unit performs redrive control of the drive unit, for example, the sensitivity changing unit is changed so as to reduce the detection sensitivity of the pinch detection by the pinch detection unit, thereby causing occurrence of pinching. It is possible to suppress pinching from being detected by a person in a state where this is not possible. Further, it is possible to avoid repetitive reverse drive control of the driving means against the user's intention to close the door held in the half-door state to the fully-closed state, and to make the door fully open. It can be closed to the closed state.

  According to a third aspect of the present invention, in the closer control device according to the first aspect, the reverse drive control means detects that the door is caught when the redrive control means redrives the drive means. In other words, the gist is that the driving means is reversely driven so that the latch mechanism is switched to the half latch state, and the driving means is stopped when the latch mechanism is switched to the half latch state.

  According to this configuration, the inversion drive control unit is configured such that the latch mechanism is switched to the half latch state even when the pinching by the door is detected when the redrive control unit performs redrive control of the drive unit. The driving means is subjected to inversion driving control or the like. Therefore, after the re-drive control means detects a closing operation of the door or an instruction of the closing operation after switching to the half latch state of the latch mechanism in accordance with the reverse drive control of the driving means at this time, The drive means is controlled again so that the latch mechanism switches to the full latch state. In this way, by repeating the re-drive control of the drive means by the re-drive control means, the door can be more reliably closed to the fully closed state.

  According to a fourth aspect of the present invention, in the closer control apparatus according to the third aspect, the pinching detection sensitivity of the pinching detection unit is changed according to the number of times of redrive control of the drive unit by the redrive control unit. The gist is that a sensitivity changing means is provided.

  Usually, when the user closes the door held in a half-door state due to the occurrence of pinching, the pinching is eliminated or the pinching does not actually occur as the number of closing operations increases. Probability is high. According to this configuration, for example, as the number of times of re-drive control of the drive means by the re-drive control means increases, that is, as the number of times of closing by the user increases, for example, the sensitivity changing means detects the pinching detection means. By changing so as to reduce the detection sensitivity of pinching caused by the pinching, it is possible to suppress pinching from being detected in a state where pinching cannot occur. Further, it is possible to avoid repetitive reverse drive control of the driving means against the user's intention to close the door held in the half-door state to the fully-closed state, and to make the door fully open. It can be closed to the closed state.

  According to a fifth aspect of the present invention, in the closer control device according to the third or fourth aspect, the inversion drive control of the drive means for switching the latch mechanism by the inversion drive control means to the half latch state and the half latch state The gist of the invention is that it includes prohibiting means for prohibiting re-drive control of the drive means by the re-drive control means by repeating the drive stop of the drive means accompanying the switching a predetermined number of times.

  According to this configuration, it is possible to suppress the re-drive control of the drive means by the re-drive control means from being repeated unintentionally.

  According to the present invention, it is possible to provide a closer control device capable of closing a door that has shifted to a half-door state in accordance with the detection of pinching during the closing operation to an fully-closed state by an operation in accordance with the user's intention.

The perspective view which shows the rear part of the vehicle with which this invention is applied. The side view which shows a latch mechanism and its operation | movement. The block diagram which shows an electrical structure. The flowchart which shows the control aspect of 1st Embodiment. The flowchart which shows the control aspect of 2nd Embodiment. The graph which shows transition of the rotational speed difference with respect to the stroke of DC motor.

(First embodiment)
A first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, an opening 2a is formed at the rear part of a body (vehicle body) 2 of a vehicle 1 to which the present invention is applied, and a door hinge (not shown) provided at the upper part of the opening 2a. A back door 3 as a door is attached through the door so as to be freely opened and closed. The back door 3 is opened by being pushed upward about the door hinge.

A door lock device 10 is installed at the front end of the back door 3 on the vehicle interior side. The door lock device 10 includes a DC motor 11 as drive means.
As shown in FIG. 2, the door lock device 10 includes a latch mechanism 12 supported by the back door 3 via a base plate (not shown) fixed to the back door 3. The latch mechanism 12 includes a latch 13 and a pole 14 that are rotatably connected around rotation shafts 12a and 12b that are parallel to the base plate. The latch 13 (latch mechanism 12) is arranged facing the U-shaped striker 4 fixed to the lower portion of the opening 2a, and can be engaged with and disengaged from the striker 4.

  That is, the latch 13 has an engagement recess 13a and is formed in a U shape. One side and the other side of the engagement recess 13a (the clockwise direction side and counterclockwise rotation in FIG. 2). The first claw portion 13b and the second claw portion 13c are formed on the direction side, respectively. A first engagement portion 13d is formed at the tip of the first claw portion 13b on the opposite side of the engagement recess 13a, and a second portion of the second claw portion 13c is formed on the engagement recess 13a side. An engaging portion 13e is formed. The latch 13 is urged toward the side that rotates in the clockwise direction in the figure by latching the other end of the latch urging spring held at one end to the base plate, and the latch installed on the base plate. When the opposing surface 13g of the first claw portion 13b comes into contact with the stopper, the rotation in the direction is restricted and held at a predetermined rotation position (hereinafter also referred to as “unlatch position”).

  On the other hand, the pole 14 is connected to the lift lever 16 via the rotation shaft 12b, and rotates integrally with the lift lever 16 around the rotation shaft 12b. The pawl 14 has an engagement end portion 14a and an extension end portion 14b extending from the rotation shaft 12b to one side and the other side (the right side and the left side in FIG. 2), respectively. The pole 14 is attached to the side that rotates counterclockwise in the figure, that is, the side that raises the engaging end 14a, by engaging the other end of the pole biasing spring held at one end with the base plate. In addition, the stopper abutting portion 16a of the lift lever 16 connected to the pole 14 abuts against the stopper ST installed on the base plate, so that the rotation in this direction is restricted, and the predetermined rotation shown in FIG. Held in the moving position.

  Here, the basic operation of the latch mechanism 12 will be described. In the state where the back door 3 is opened, the latch 13 is held at the unlatched position by the abutment surface 13g of the first claw portion 13b coming into contact with the latch stopper, and the engaging recess 13a The striker 4 opens upon approaching the striker 4 during the closing operation. Further, the pole 14 is held at a predetermined rotation position by the lift lever 16 coming into contact with the stopper ST, and the engagement end portion 14a is disposed below the second claw portion 13c. The state of the latch mechanism 12 at this time is referred to as an unlatched state (release state).

  Next, when the striker 4 enters the engaging recess 13a in accordance with the closing operation of the back door 3, the inner wall surface of the engaging recess 13a is pressed by the striker 4 and is shown by a two-dot chain line in FIG. As described above, the latch 13 rotates counterclockwise in the illustrated direction against the latch biasing spring, and the engagement end 14a of the pole 14 is locked to the second engagement portion 13e to prevent rotation. Is done. At this time, the back door 3 is in a half door state in which the engagement recess 13a engages with the striker 4 to prevent it from coming off, and the state of the latch mechanism 12 at this time is referred to as a half latch state.

  Subsequently, as the back door 3 is further closed, when the striker 4 further enters the engagement recess 13a, the inner wall surface of the engagement recess 13a is pressed by the striker 4, and the solid line in FIG. As shown, the latch 13 further rotates in the counterclockwise direction shown in the figure against the latch urging spring, and the engagement end portion 14a of the pole 14 is locked to the first engagement portion 13d. It is prevented from rotating. At this time, the back door 3 is in a fully closed state in which the engagement recess 13a engages with the striker 4 to prevent it from coming off, and the state of the latch mechanism 12 at this time is referred to as a fully latched state (engaged state).

  Further, in the above-described half latch state or full latch state, for example, when the pole 14 rotates in the clockwise direction against the pole biasing spring in accordance with the operation of the door handle (back door outside handle), the engagement end portion The locking of the first engaging portion 13d or the second engaging portion 13e by 14a is released. At this time, the latch 13 is urged by the latch urging spring and rotates in the clockwise direction shown in the drawing while pressing the striker 4 by the inner wall surface of the engaging recess 13a. The back door 3 can be released by releasing the engagement with the striker 4 in the engagement recess 13a. At this time, it goes without saying that the latch mechanism 12 is in an unlatched state (released state).

  The DC motor 11 is linked to a latch 13 and rotates the latch 13 to switch the latch mechanism 12 between a half latch state and a full latch state according to the rotation direction.

Next, the electrical configuration of the present embodiment will be described.
As shown in FIG. 3, a door ECU (Electronic Control Unit) 20 installed in the vehicle 1 is mainly composed of, for example, a micro controller (MCU), and is related to electrical drive of the door lock device 10. The door lock drive unit 21 is electrically connected. The door lock drive unit 21 includes the DC motor 11, a half latch switch 22 as a half latch detection unit, a full latch switch 23 as a full latch detection unit, and a pulse sensor 24. The door ECU 20 controls the switching of the latch mechanism 12 between the half latch state and the full latch state by drivingly controlling the DC motor 11. Further, the door ECU 20 detects that the latch mechanism 12 is in the half latch state based on the detection signal output from the half latch switch 22 (the latch 13 is in the rotation position corresponding to the half latch state), and Based on the detection signal output from the full latch switch 23, it is detected that the latch mechanism 12 is in the full latch state (the latch 13 is in the rotation position corresponding to the full latch state). Further, the door ECU 20 detects the rotation direction (forward or reverse), rotation amount (stroke), rotation speed N, and the like of the DC motor 11 based on a pair of pulse signals with different phases output from the pulse sensor 24. . The door ECU 20 controls the driving of the DC motor 11 based on the detection signals from both the switches 22 and 23 and the pulse signal from the pulse sensor 24.

  For example, when the half-latch state of the latch mechanism 12 is detected with the closing operation of the back door 3 in the open state, the door ECU 20 controls the drive of the DC motor 11 to switch the latch mechanism 12 to the full latch state (drive). Control means).

  Further, the door ECU 20 obtains the rotational speed No when the DC motor 11 is in an unloaded state, and calculates the rotational speed difference DN (= No−N) between the rotational speed No and the current rotational speed N. This is because the rotational speed difference DN is correlated with the rotational torque difference (corresponding to a load). The door ECU 20 compares the rotational speed difference DN with the detection threshold Ta corresponding to the stroke St of the DC motor 11 at that time, and the back ECU 20 backs up when the rotational speed difference DN falls below the detection threshold Ta. Detection of a foreign object or the like caught by the door 3 (pinch detection means). This detection threshold Th is stored in advance in a memory area (for example, ROM) of the door ECU 20.

  When pinching is detected when the door ECU 20 drives and controls the DC motor 11 to switch the latch mechanism 12 to the fully latched state, the door ECU 20 performs reverse drive control of the DC motor 11 to switch the latch mechanism 12 to the half latched state. Then, the driving of the DC motor 11 is stopped in accordance with the switching to the half latch state (reverse drive control means).

  Further, the door ECU 20 is electrically connected to a re-operation switch 26 as a closing operation detection unit installed on the back door 3. For example, the re-actuating switch 26 is closed by the user (for example, pushed in the closing direction) with respect to the back door 3 in which the latch mechanism 12 is switched to the half-latch state due to the detection of the pinching and is in the half-door state. In this case, the door position switch outputs a detection signal indicating that the back door 3 is closed. Based on this detection signal, the door ECU 20 performs redrive control of the DC motor 11 so as to switch the latch mechanism 12 in the half latch state to the full latch state (redrive control means). In other words, the door ECU 20 accepts the detection signal of the reactivation switch 26 and permits the redrive control of the DC motor 11 only when the pinching is detected and the reverse drive control of the DC motor 11 is performed. .

  Note that the door ECU 20 detects the trapping of a foreign substance or the like by the back door 3 by comparing the rotational speed difference DN with the detection threshold Ta even during the re-drive control of the DC motor 11. However, the door ECU 20 changes the detection threshold Ta, which is compared with the rotational speed difference DN, to a larger value, for example, and lowers the detection sensitivity so that pinching is not easily detected (changing means). This is because, when the user closes the back door 3 held in a half-door state with the occurrence of pinching, it can be assumed that the pinching has been eliminated or that pinching has not actually occurred. by.

  Next, when the latch mechanism 12 is shifted to the half-latch state when the back door 3 in the open state is closed, the drive control of the DC motor 11 is started and the latch mechanism 12 is switched to the full latch state. The relationship between the stroke (rotation amount) St of the DC motor 11 correlated with the opening / closing position of the door 3 and the rotational speed difference DN will be described based on the map shown in FIG.

  As shown in FIG. 6, the DC motor 11 has a free running section with a predetermined amount of rotation until it actually engages with the latch 13 as it rotates, and the DC motor that ends the free running section. 11 immediately before the stroke Sto is regarded as a no-load state, and the rotational speed difference DN at that time is zero. The idle running section of the DC motor 11 is detected based on the pulse signal of the pulse sensor 24, for example.

  As depicted by a broken line in FIG. 6, the rotational speed difference DN (hereinafter also referred to as “reference rotational speed difference”) that is expected to correspond to the stroke St is immediately after the stroke Sto at which the idle running section ends. While decreasing in a step shape, it continues decreasing until the stroke Ste of the DC motor 11 in which the switching of the latch mechanism 12 to the full latch state is completed. This is because the DC motor 11 starts to engage with the latch 13 immediately after the stroke Sto, so that the rotational speed N of the DC motor 11 rapidly decreases and the back door 3 is closed due to the increase in the stroke St. This is because the door reaction force (for example, the elasticity of the weather strip that seals the back door 3 in a liquid-tight manner) continues to increase and the rotational speed N of the DC motor 11 continues to decrease. Needless to say, the reference rotational speed difference becomes a negative number in the entire range of the strokes Sto to Ste.

In the present embodiment, based on the reference rotational speed difference indicated by the broken line, the above-described detection threshold Ta related to the detection of pinching is calculated according to the following equation.
Ta = “reference rotational speed difference” −Z
However, Z is a pinching determination torque, and is set to a predetermined value (positive number) based on a rotational speed difference corresponding to a load at the time of pinching. Further, two predetermined values ZH and ZL (ZH <ZL) are selectively adopted as predetermined values that can be set for the pinching determination torque Z, and two detection threshold values TaH, TaL exists.

TaH = "reference rotational speed difference" -ZH
TaL = “reference rotational speed difference” −ZL
Therefore, as depicted by a solid line in FIG. 6, the detection threshold value TaH is a value (negative number) that is reduced by a predetermined value (pinching determination torque) ZH from the reference rotational speed difference, and the detection threshold value TaL is the same. It is a value (negative number) that is decreased by a predetermined value (pinch determination torque) ZL from the reference rotational speed difference.

  Then, the door ECU 20 determines the magnitude of the rotational speed difference DN and the detection threshold Ta (TaH or TaL) after a change in rotational speed difference (decrease in the rotational speed difference DN) accompanying the start of engagement between the DC motor 11 and the latch 13. Compare relationships. When it is determined that the rotational speed difference DN is less than the detection threshold Ta, the door ECU 20 determines that a load corresponding to the occurrence of pinching has occurred.

  Note that the detection threshold value TaL in which the predetermined value ZL is adopted as the pinching determination torque Z is set to be relatively smaller than the detection threshold value TaH, and it is difficult to detect pinching even if the rotational speed difference DN is the same. ing.

  As described above, the door ECU 20 changes and sets the detection threshold Ta to a relatively large value so that the pinching is hardly detected during the re-drive control of the DC motor 11. That is, the door ECU 20 employs a detection threshold value TaH having relatively high detection sensitivity in detection of pinching immediately after the closer operation starts accompanying the transition to the half latch state. On the other hand, the door ECU 20 employs a detection threshold TaL having a relatively low detection sensitivity in detecting pinching after the closer operation is started (resumed) after the closer reversing operation.

  Next, the control mode of the door lock device 10 (door lock drive unit 21) by the door ECU 20 during the closing operation of the back door 3 will be described based on the flowchart shown in FIG. In this process, it is detected that the latch mechanism 12 is in the half latch state based on the detection signal output from the half latch switch 22 with the closing operation (closing operation) of the back door 3 in the open state. It is started with.

  When the processing shifts to this routine, first, in S (step) 1, the door ECU 20 starts the closer operation and starts the drive control of the DC motor 11 so as to bring the latch mechanism 12 into the fully latched state. It should be noted that here, the door ECU 20 is in the idle running period until the stroke St of the DC motor 11 reaches the stroke Sto because it is immediately after the start of the closer operation accompanying the transition to the half latch state. While detecting the speed No, the calculation of the rotational speed difference DN is started after the end of the idling period.

  When the closer operation is started, the door ECU 20 determines in S2 whether or not pinching is detected based on the rotational speed difference DN. As described above, the detection threshold value TaH having a relatively high detection sensitivity is used in the detection of the pinching immediately after the start of the closer operation accompanying the transition to the half latch state. If it is determined that no pinching has been detected, the door ECU 20 determines in S3 whether or not the detection signal output from the full latch switch 23 is on, that is, whether or not the transition of the latch mechanism 12 to the full latch state has been completed. Determine whether. Here, when it is determined that the detection signal output from the full latch switch 23 is not ON, the door ECU 20 returns to S2 and repeats the same processing. If it is determined that the detection signal output by the full latch switch 23 is ON, the door ECU 20 stops the closer operation and stops the driving of the DC motor 11 in S4, and the process is terminated. That is, the door ECU 20 continues the closer operation until the transition to the full latch state is completed or not, as long as there is no pinching detected, after the closer operation is started in accordance with the transition of the latch mechanism 12 to the half latch state.

  On the other hand, if it is determined in S2 that pinching has been detected, in S5, the door ECU 20 starts the closer reversing operation to reverse the DC motor 11 in order to put the latch mechanism 12 in a half latch state in order to eliminate pinching. Start drive control.

  When the closer reversing operation is started, the door ECU 20 determines in S6 whether or not the detection signal output from the half latch switch 22 is ON, that is, whether or not the shift of the latch mechanism 12 to the half latch state has been completed. To do. The door ECU 20 repeats the process (S6) until it is determined that the detection signal output from the half latch switch 22 is on, and when it is determined that the detection signal output from the half latch switch 22 is on, S7 , The closer operation (closer reversal operation) is stopped, and the driving of the DC motor 11 is stopped. That is, for example, when the pinching is detected after the closer operation is started, the door ECU 20 continues the closer reversing operation until the transition to the half latch state is completed.

  Thereafter, in S8, the door ECU 20 determines whether or not the detection signal output from the re-operation switch 26 is ON, that is, whether or not the back door 3 is closed by the user's closing operation on the back door 3. The door ECU 20 repeats the process (S8) until it is determined that the detection signal output from the reactivation switch 26 is on, and when it is determined that the detection signal output from the reactivation switch 26 is on, the process proceeds to S9. Transition. That is, the door ECU 20 is in a standby state until the detection signal output from the re-operation switch 26 is turned on after the transition to the half-latch state is completed due to pinching detection or the like (YES in S2).

  In S9, the door ECU 20 sets a detection threshold TaL having a relatively low detection sensitivity as the detection threshold Ta related to detection of pinching, and returns to S1 to repeat the same processing. However, after the closer operation is started (restarted) after the closer reversing operation, the acquired rotational speed No detected in the initial process is used. Needless to say, with the change of the detection threshold value Ta, the pinching detection sensitivity in S2 is relatively lowered than the original.

  Therefore, the door ECU 20 continues the closer operation until the transition to the fully latched state is completed, even after the closer operation is started (resumed) after the closer reversal operation, unless the pinching is detected. Alternatively, the door ECU 20 repeats the closer reversal operation and the like as long as the pinch is detected even after the closer operation start (resumption) after the closer reversal operation.

Next, the operation of this embodiment will be described.
For example, when the half latch state is detected with the closing operation of the back door 3 in the open state, the DC motor 11 is driven and controlled by the door ECU 20 so that the latch mechanism 12 is switched to the full latch state. At this time, when pinching by the back door 3 is detected, the DC motor 11 is reversely driven and controlled so that the latch mechanism 12 is switched to the half latch state by the door ECU 20, and the DC motor 11 is stopped when the switch to the half latch state is performed. Is done. Thereafter, when the closing operation of the back door 3 is detected by the re-operation switch 26, the drive control of the DC motor 11 is resumed so that the latch mechanism 12 is switched to the full latch state by the door ECU 20.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In this embodiment, the user latches by the door ECU 20 by closing the back door 3 held in the half-door state in accordance with the intention to close it to the fully-closed state with the occurrence of pinching. The drive control of the DC motor 11 can be resumed so that the mechanism 12 is switched to the full latch state. For this reason, the user can close the door to the fully closed state by an intuitive operation, and the operability can be improved.

Further, unlike the conventional example, it is not necessary to release the latch mechanism that holds the door in the half door state and to open the door once, so that convenience and merchantability can be improved.
(2) In the present embodiment, when the door ECU 20 controls to redrive the DC motor 11, the change is made so as to lower the detection sensitivity of the pinching, so that pinching is detected in a state where pinching cannot occur. This can be suppressed. In addition, it is possible to prevent the reverse drive control of the DC motor 11 from being repeated against the user's intention to close the back door 3 held in the half door state to the fully closed state, and more reliably the back door 3. Can be closed to the fully closed state. Note that if pinching actually occurs, the user has already dealt with the DC motor 11 prior to re-drive control, so there is no problem even if the pinning detection sensitivity is lowered.

  (3) In the present embodiment, the door ECU 20 reverses the DC motor 11 so that the latch mechanism 12 is switched to the half latch state even when the pinching by the back door 3 is detected when the DC motor 11 is re-driven. Drive control etc. Therefore, if the closing operation of the back door 3 is detected by the reactivation switch 26 after the door ECU 20 is switched to the half latch state of the latch mechanism 12 in accordance with the reverse drive control of the DC motor 11 at this time, the latch mechanism 12 The DC motor 11 is re-driven to be switched to the full latch state. Thus, the re-drive control of the DC motor 11 by the door ECU 20 is repeated, so that the back door 3 can be more reliably closed to the fully closed state.

(Second Embodiment)
A second embodiment of the present invention will be described with reference to FIG. Since the second embodiment is mainly configured so as to limit the number of times of redrive control of the DC motor 11 by the door ECU 20 of the first embodiment, the detailed description of the same parts will be made. Is omitted.

  Hereinafter, the control mode of the door lock device 10 (door lock drive unit 21) by the door ECU 20 during the closing operation of the back door 3 of the present embodiment will be described. In this process, it is detected that the latch mechanism 12 is in the half latch state based on the detection signal output from the half latch switch 22 with the closing operation (closing operation) of the back door 3 in the open state. It is started with.

  When the processing shifts to this routine, first, in S11, the door ECU 20 starts the closer operation and starts the drive control of the DC motor 11 to bring the latch mechanism 12 into the full latch state.

  When the closer operation is started, the door ECU 20 determines in S12 whether or not pinching is detected based on the rotational speed difference DN. As in the first embodiment, the detection threshold value TaH having a relatively high detection sensitivity is employed in the detection of the pinching immediately after the closer operation starts accompanying the transition to the half latch state. If it is determined that no pinching has been detected, the door ECU 20 determines in S13 whether or not the detection signal output from the full latch switch 23 is on, that is, whether or not the shift of the latch mechanism 12 to the full latch state has been completed. Determine whether.

  Here, if it is determined that the detection signal output from the full latch switch 23 is not ON, the door ECU 20 returns to S12 and repeats the same processing. If it is determined that the detection signal output from the full latch switch 23 is ON, the door ECU 20 stops the closer operation and stops driving the DC motor 11 in S14. Then, in S15, the door ECU 20 clears the counter C for counting the number of times of the closer reversal operation or the like to zero, and ends the process.

  On the other hand, if it is determined in S12 that pinching has been detected, in S16, the door ECU 20 starts the closer reversing operation to bring the latch mechanism 12 into a half-latch state in order to eliminate pinching and reverse the DC motor 11. Start drive control.

  When the closer reversing operation is started, the door ECU 20 determines in S17 whether or not the detection signal output from the half latch switch 22 is ON, that is, whether or not the shift of the latch mechanism 12 to the half latch state has been completed. To do. The door ECU 20 repeats the processing (S17) until it is determined that the detection signal output from the half latch switch 22 is ON, and when it is determined that the detection signal output from the half latch switch 22 is ON, S18. , The closer operation (closer reversal operation) is stopped, and the driving of the DC motor 11 is stopped. Then, the door ECU 20 increments the counter C by “1” in S19. That is, the counter C represents the number of times that the closer reversal operation or the like has been performed on the assumption that the pinching is detected in S12.

  Subsequently, in S20, the door ECU 20 determines whether or not the current counter C is larger than a predetermined value (natural number) CM. When it is determined that the current counter C is larger than the predetermined value CM, the door ECU 20 considers that the pinching in which the closer reversing operation or the like is repeated cannot be eliminated, and performs an abnormality notification using, for example, a notification lamp or a notification buzzer. It will be in a standby state. As a result, it is avoided that the closer re-operation (re-drive control of the DC motor 11) is repeated more than the number of times corresponding to the predetermined value CM (prohibiting means), and the user may be in an abnormal state. Informed. Note that the closer reversing operation based on the detection of pinching is avoided from being repeated more than the number of times corresponding to the predetermined value “CM + 1”.

  On the other hand, when it is determined in S20 that the current counter C is equal to or smaller than the predetermined value CM, the door ECU 20 determines in S21 whether or not the detection signal output from the reactivation switch 26 is ON, that is, the user closes the back door 3. It is determined whether or not the back door 3 has been closed by the operation. The door ECU 20 repeats the processing (S21) until it is determined that the detection signal output from the reactivation switch 26 is on, and when it is determined that the detection signal output from the reactivation switch 26 is on, the process proceeds to S22. Transition. That is, after the transition to the half-latch state is completed with the detection of pinching or the like (YES in S12), the door ECU 20 is not in an abnormal state in which the closer re-operation is repeated more than the number of times corresponding to the predetermined value CM. It will be in a standby state until the detection signal which the re-operation switch 26 outputs turns on.

In S22, the door ECU 20 sets a detection threshold TaL having a relatively low detection sensitivity as the detection threshold Ta related to detection of pinching, and returns to S11 to repeat the same processing.
Therefore, the door ECU 20 continues the closer operation until the transition to the fully latched state is completed, even after the closer operation is started (resumed) after the closer reversal operation, unless the pinching is detected. Alternatively, the door ECU 20 repeats the closer re-operation as long as the pinching is detected on the assumption that the current counter C does not exceed the predetermined value CM even after the closer operation is started (restarted) after the closer reversing operation.

As described above in detail, according to the present embodiment, in addition to the effects (1) to (3) in the first embodiment, the following effects can be obtained.
(1) In this embodiment, the reverse drive control of the DC motor 11 that switches the latch mechanism 12 to the half latch state and the drive stop of the DC motor 11 that accompanies the switch to the half latch state correspond to a predetermined number of times (corresponding to a predetermined value “CM + 1”). The re-drive control of the DC motor 11 is prohibited by being repeated. Thereby, it is possible to prevent the re-drive control of the DC motor 11 from being repeated. Further, it is possible to avoid the waiting for detection of the closing operation of the back door 3 by the re-operation switch 26 (the standby state of the door ECU 20) being continued, and the power consumption can be reduced.

In addition, you may change the said embodiment as follows.
-In said 1st Embodiment, when pinching is detected again after the closer operation start (resumption) which passed through the first closer reversal operation, the closer reactivation after the first closer reversal operation may be prohibited. That is, for example, in the second embodiment, the predetermined value CM may be “1”.

  In the second embodiment, the pinching detection sensitivity (detection threshold Ta) may be changed (sensitivity changing means) according to the number of times of redrive control of the DC motor 11 (counter C). More specifically, the more the number of redrive controls (counter C) of the DC motor 11 is, that is, the more the number of closing operations for the back door 3 held in the half-door state with the occurrence of pinching is, The detection threshold Ta may be corrected to decrease so as to reduce the pinching detection sensitivity. Normally, when the user closes the back door 3 held in a half-door state due to the occurrence of pinching, the pinching is canceled or the pinching is actually performed as the number of closing operations increases. This is because there is a high possibility that it has not occurred. By changing in this way, it is possible to suppress pinching from being detected by a person in a state where pinching cannot occur. Further, it is possible to prevent the reverse drive control of the DC motor 11 from being repeated against the user's intention to close the back door 3 held in the half-door state to the fully-closed state. It can be closed to the fully closed state.

  Note that the detection threshold Ta may be monotonously decreased (for example, proportionally decreased) as the number of times of redrive control of the DC motor 11 (counter C) is increased. Further, the detection threshold Ta may be decreased stepwise by a plurality of values as the number of times of redrive control of the DC motor 11 (counter C) is increased. In this case, if the detection threshold value Ta is reduced in two steps according to the number of times of redrive control of the DC motor 11 in particular, the arithmetic processing can be further simplified.

In each of the above embodiments, the detection threshold value Ta is corrected when the pinching detection sensitivity is changed. However, the rotational speed difference DN may be corrected.
In each of the above embodiments, the detection threshold value Ta (or rotational speed difference DN) related to detection of pinching may be changed (corrected) according to the rotational speed of the DC motor 11 and the sensor output value.

In each of the above embodiments, the detection threshold Ta may be maintained at a constant value (for example, the detection threshold TaH) regardless of whether or not the closer is reactivated.
In each of the above embodiments, the rotational speed difference DN (negative number) is used when estimating the load when the back door 3 is closed. However, the absolute value of the rotational speed difference DN may be used. In this case, the absolute value of the rotation speed difference DN and the polarity of the detection threshold related to the foreign object pinching determination may be set so as to match.

  -In each said embodiment, when estimating the load at the time of closing operation of the back door 3, the rotational speed difference DN by the pulse sensor 24 was utilized, However, When the sensor which detects the moving speed of the back door 3 is provided directly Is a deviation of a movement speed change of the back door 3 (for example, a movement speed of the back door 3 in a predetermined section or a reference movement speed determined by a preset movement speed and a current movement speed detected thereafter) Any one of a speed difference, an integrated value of the movement speed difference, and a movement speed change amount within a predetermined time (for example, per unit time or per unit movement amount) may be used.

  In addition, when a sensor that directly detects the rotational torque of the DC motor 11 is provided, the rotational torque may be used. Furthermore, in the case where a means for calculating or detecting another characteristic value (for example, a change in rotational angular acceleration of the DC motor 11) that correlates with the rotational torque of the DC motor 11 is provided, the characteristic value may be used.

  In each of the above embodiments, the dedicated re-operation switch 26 is separately provided in order to detect the closing operation (closing operation) of the back door 3 by the user. On the other hand, for example, an existing courtesy switch that is turned on in the half door state of the back door 3 and turned off in the fully closed state may be used as the reactivation switch 26. Further, the closing operation (closing operation) of the back door 3 by the user may be detected using the rotation amount (stroke) or rotation speed of the DC motor 11 detected based on the pulse signal of the pulse sensor 24.

  Alternatively, when an appropriate sensor or the like (for example, a pulse sensor or a rotary encoder) for detecting the rotation position of the latch 13 is provided, the sensor or the like may be used as the reactivation switch 26.

  In each of the above embodiments, when a door motor that electrically closes the back door 3 in the open state is provided and a pulse sensor for detecting the rotation amount or the rotation speed of the door motor is provided, the pulse sensor is The reactivation switch 26 may be used.

  Alternatively, when the door motor is provided with a switch (for example, a close switch, a lock switch, a remote control switch, etc.) that instructs the door motor to close the open back door 3, the switch is used as the reactivation switch 26. May be.

  -In each said embodiment, the control of the door lock apparatus 10 (door lock drive unit 21) at the time of the closing operation of the back door 3 is, for example, a time-out in which the elapsed time from the start of the control exceeds a certain time or the use It may be ended by a closing operation of the back door 3 to a fully closed state or an opening operation of the back door 3 by a person.

  In each of the above embodiments, the transmission mechanism that mechanically links the DC motor 11 and the latch mechanism 12 (latch 13) is arbitrary, such as a link mechanism, a cam mechanism, a gear mechanism, a cable (rope, belt) transmission mechanism, A screw mechanism or a combination of these may be employed as appropriate.

  -As a door, a swing door, a sliding door, a trunk lid, etc. may be sufficient.

  3 ... Back door (door), 11 ... DC motor (drive means), 12 ... Latch mechanism, 20 ... Door ECU (drive control means, pinching detection means, reverse drive control means, redrive control means, sensitivity change means, prohibition Means), 22... Half latch switch (half latch detection means), 23... Full latch switch (full latch detection means), 26.

Claims (5)

A latch mechanism that can selectively hold the door in a half-door state and a fully-closed state; a half-latch detection means that detects a half-latch state in which the latch mechanism holds the door in a half-door state; and Full latch detection means for detecting a fully latched state for holding the door in a fully closed state, drive means for switching the latch mechanism between the half latch state and the full latch state, and the latch mechanism by detecting the half latch state Drive control means for driving and controlling the drive means so as to switch to a fully latched state, pinch detection means for detecting pinching by the door, and pinching by the door detected when the drive control means controls the drive means. As a result, the drive means is reversed and controlled so that the latch mechanism switches to a half latch state. In closer control device and a reversing drive control means for said driving means stop driving with the switching to the half-latched state,
A closing operation detecting means for detecting the closing operation of the door or an instruction of the closing operation;
After the switching of the latch mechanism to the half latch state in accordance with the reverse drive control of the drive means by the reverse drive control means, the latch mechanism is in the fully latched state by detecting the closing operation of the door or the instruction for the closing operation. A closer control device comprising: redrive control means for resuming drive control of the drive means so as to switch to The closer control device according to claim 1,
A closer control device comprising sensitivity changing means for changing a pinching detection sensitivity by the pinching detection means when the redrive control means performs redrive control of the driving means. The closer control device according to claim 1,
The inversion drive control means inverts the drive means so that the latch mechanism is switched to a half latch state even when a pinching by the door is detected when the redrive control means performs redrive control of the drive means. A closer control device characterized in that drive control is performed and the drive means is stopped when switching to the half latch state. The closer control device according to claim 3,
A closer control device comprising sensitivity changing means for changing the pinching detection sensitivity by the pinching detection means according to the number of times of redrive control of the driving means by the redrive control means. In the closer control device according to claim 3 or 4,
The redrive control unit is configured to repeat the inversion drive control of the drive unit that switches the latch mechanism to the half latch state by the reverse drive control unit and the drive stop of the drive unit in accordance with the switch to the half latch state by a predetermined number of times. A closer control device comprising prohibiting means for prohibiting re-drive control of the drive means according to the above.