JP5098115B2 - Door lock device - Google Patents

Description

  The present invention relates to a door locking device that opens and closes a doorway provided on a side wall of a vehicle.

One of the door opening and closing methods that opens and closes the door opening of the vehicle is a sliding mechanism that supports the sliding door slidably in the longitudinal direction of the vehicle using only the sliding mechanism provided at the center of the upper and lower sides of the sliding door. A vehicle equipped with a swing slide door that eliminates the above is known, and an example thereof is described in Patent Document 1.
By the way, when the door opening of the vehicle is held closed by the swing slide door, for example, as shown in FIG. 18, the swing slide door 200 is oscillated and displaced by the parallel link 201 or the like to reach the closed position D1. At that time, the front and lower two lock portions J1 and J2 (only the upper portion is shown in FIG. 18) and the latches 202 in the rear rear lock portion J3 are engaged with the strikers 203, thereby swinging the slide. The door is locked to the door opening.

  Here, when an electric power latch is used, as shown in FIG. 19, when the fork 204 in the latch 202 of each of the lock portions J1, J2, and J3 engages with the striker 203, first, The half-latch state where the fork 204 is opposed to the striker 203 is detected by the half-latch switch SWA, and after the half-latch state is confirmed, the switching lever 207 which is a swing operation member interlocked with the drive gear 206 is not shown. The fork 204 is engaged with the striker 203 by the operating force of the switching lever 207. Further, when the full latch state is detected by the full latch switch SWB and the pole switch SWP for detecting the movement of the fork return regulating pole 208 is switched, the motor is stopped and the fork 204 is connected to the striker 203. Further meshing is stopped. After this, the motor reverses, and the switching lever 207 returns to the origin position, which is the swing start position, so that the displacement of the fork when it is unlatched is allowed.

  By the way, the conventional power latch is designed to place the motor stopped at any position, the drive gear linked to the motor, the swing operation member, etc. at the origin position when the power is turned on after the assembly of the line or after the vehicle battery is replaced. Initial home position return control is performed to return to and stop.

  At this time, the controller as the control means performs the following control. FIG. 20 shows an operation chart of a conventional power latch as a conventional example. Here, a full latch switch (SWB) that turns on when a full latch is detected, a half latch switch (SWA) that turns on when a half latch is detected, and a fork in a latch body (not shown) of the power latch, A pole switch (SWP) that issues a switching signal when the pole swings to restrict the return of the fork and an origin position switch (SWN) that generates a switching signal when the origin position is detected are provided.

  During normal retraction operation, the door is manually operated in the closing direction, the half latch switch SWA is turned on, and when the pole switch SWP reaches the half latch position, the motor is driven to displace the latch to the full latch side, The full latch state is detected at the time when the pole switch SWP is switched together with the switching of the full latch switch SWB. In the normal pull-in operation, the full latch position is set as the motor reversal position, the motor is reversed, and the drive gear, the swing operation member and the like linked to the motor are returned to the original position.

On the other hand, in the initial home search control, the motor is continuously forward rotated in the door closing direction (closed position direction) even after the pole switch SWP is switched. This reaches a mechanical restraint state where the fork is excessively engaged with the striker at the overrun restraint position (see FIG. 20), resulting in a forced stop.
Then, this position where the overload is applied is set as the motor reversal position, the motor is reversed and released from the restrained state, and then continues to rotate (reverse rotation). Then, the motor is moved to the home position according to the switching of the home position switch (SWN). Stop at the position, and issue the home position detection completion command.
In this way, in the pull-in operation by the power latch to the closed position of the door at normal time, it is confirmed that the fork has reached the full latch position, and the motor is reversed to the home position after stopping, The latch does not operate to the overrun restraint position, and the above restraint state does not occur.

Japanese Patent Publication No.7-84137

  As described above, in the normal pull-in operation by the power latch, it is confirmed that the full latch switch SWB is turned on and the pole switch SWP is switched, the motor is stopped at the full latch position, and the reverse operation is performed (see FIG. 20). Therefore, there is no problem that the latch falls into a restrained state.

  However, when performing initial home position return control when the power is turned on, for example, after the motor has been newly assembled or after the vehicle battery has been replaced, there are cases where the fork is not in the half latch position but has advanced to the full latch position and stopped. In such a case, when the motor of the power latch starts to move from the full latch position, the switching of the full latch switch SWB and the pole switch SWP cannot be confirmed, and the motor cannot be stopped. Therefore, the motor always operates to the overrun restraint position, and an excessive load is applied to the motor when the fork of the latch reaches the mechanical restraint state. Then, the motor is driven reversely (reversely) and continuously rotates, and the home position detection switch SWN is switched at a predetermined home position Pb so that the motor and the driving gear, the swing operation member, etc. linked thereto are stopped at the home position. I have to.

Note that the power latch has been modified to return the motor and its interlocking member to the home position and stop when the power is turned on after assembly of the line or after battery replacement, for the reason of preventing safety and damage to the latch. Control is absolutely necessary.
As described above, in the conventional initial origin search, the motor always operates to the overrun restraint position, and the motor temporarily stops when the latch reaches the mechanical restraint state. At this time, there is a problem that deformation and breakage of the latch mechanism portion and a motor fixing failure are likely to occur.

  The present invention has been made on the basis of the above problems. The object of the present invention is to eliminate the fact that the latch reaches a mechanically constrained state when performing home search to stop the motor at a predetermined home position. Another object of the present invention is to provide a door locking device that can reliably prevent deformation and breakage of the latch mechanism and a motor fixing failure.

  According to a first aspect of the present invention, a door that opens and closes a door opening of a vehicle body and a latch supported by either the door or the edge of the door opening are engaged with a striker fixed to the other. A door locking portion for holding the door in a closed position; a latch driving means for rotating a motor in one direction to engage the latch with the opposing striker and switching from a half latch position to a full latch position; and the latch drive. Control means for driving the means, and further comprising overrun detection means for detecting that the latch has reached the predetermined overrun position from the half latch position through the full latch position. The control means performs the initial home search to stop the motor at a predetermined home position when the power is turned on. The latch is displaced toward the overrun position, and when the overrun detection means detects that the latch has reached the overrun position, the motor is reversed. It is characterized by that.

  According to a second aspect of the present invention, in the door locking device according to the first aspect, the overrun position includes the full latch position and an overrun restraint position where the retracting function of the latch is mechanically restrained. It is set to be between.

  According to a third aspect of the present invention, in the door locking device according to the first or second aspect, when the latch reaches a half latch position, a half latch signal is output, and when the latch reaches the overrun position, the half latch signal is switched. A half latch sensor is provided, and the overrun detecting means detects that the latch has reached the overrun position by detecting switching of the half latch signal.

  According to a fourth aspect of the present invention, there is provided the door locking device according to any one of the first to third aspects, further comprising an origin detecting means for detecting that the motor has reached the origin, wherein the control means The latch is in a fully latched state, and the motor is stopped when the origin detecting means detects that the motor has reached the origin.

  According to a fifth aspect of the present invention, in the door locking device according to any one of the first to fourth aspects, the latch driving means is a swing amount branching transmission interlocked with a swing operation member swinged by the motor. The latch interlocked by each switching operation force from a member is switched from a half latch state to a full latch state with respect to the striker.

  According to a sixth aspect of the present invention, in the door locking device according to any one of the first to fifth aspects, the door locking portions are respectively provided on the front side and the rear side of the door opening, and the control means When initializing the motor, the motor is driven to rotate in one direction to displace the latch of the front lock portion toward the front overrun position, and then the latch of the front lock portion is moved to the overrun position. When it is detected that the run position has been reached, the motor is driven in reverse, the latch of the rear lock portion is displaced toward the rear overrun position, and the latch of the rear lock portion is moved to the overrun position. When it is detected that the motor has reached, the motor is reversely driven again, and then the motor is stopped at the origin position.

  According to the first aspect of the present invention, when performing the initial home search for stopping the motor at a predetermined home position when the power is turned on, the motor is rotated in one direction to displace the latch toward the overrun position, and then the latch When the overrun position is detected, the motor is reversed, and then the motor is returned to the predetermined origin position and stopped, so that it is possible to prevent the latch from falling into a mechanical restraint state. There are no problems such as deformation and breakage of the latch mechanism, and adhesion of the motor.

  In the invention of claim 2, since the overrun position is set to be between the full latch position and the overrun restraint position, the motor can be reversed before the overrun restraint position, and the mechanical restraint of the latch can be achieved. The occurrence of the state is surely prevented, and problems such as deformation and breakage of the latch mechanism, and motor sticking do not occur.

  In the invention of claim 3, since the half latch signal is switched when the half latch sensor that outputs the half latch signal reaches the overrun position, the existing half latch signal can be switched without providing a new overrun position detection sensor. By detecting, it is possible to detect that the latch has reached the overrun position.

  According to the fourth aspect of the invention, since the origin detection means detects that the motor has reached the origin, the motor can be stopped accurately when the origin position is detected.

  According to the fifth aspect of the present invention, since the latch interlocked by each switching operation force from the swing amount branch transmission member interlocked with the swing operation member is switched from the half latch state to the full latch state with respect to the striker, The degree of freedom of the layout can be expanded. For example, by distributing the swing of the swing operation member to two or more swing displacement transmitting members, the plurality of latches can be fully latched from the half latch state. Can be easily switched to.

  According to the sixth aspect of the present invention, when the power source is turned on, the front latch is displaced toward the front overrun position, and when the switching of the front half latch signal is detected, the front overrun position is reached. And then the rear lock portion is displaced toward the rear overrun position, and when the rear half latch signal switching is detected, the rear overrun position is reached. Then, the motor is reversely driven again, and then the motor is stopped at the origin position. For this reason, it is possible to prevent the front and rear latches from entering into a mechanical restraint state, and when the motor side reaches the origin position that is a predetermined amount away from the rear overrun position, the motor is stopped at the origin position and is easy. Can be corrected back to In addition, since the front and rear lock portions are interlocked with each other, it is not necessary to add a motor, the cost can be reduced, the weight of the device can be reduced, and the degree of freedom of layout in the door is improved.

FIG. 1 shows a vehicle B to which a door locking device according to an embodiment of the present invention is applied. The vehicle B is an automobile having a center pillar 5 and includes a front door 2 that opens and closes a front entrance / exit 1 and a swing slide door (hereinafter simply referred to as a rear door) 4 that opens and closes a rear entrance 3.
The front door 2 is hinged at two front and lower locations h1 and h2 and is pivotably locked to the rear lock portion Jf at the middle of the center pillar 5 by using a latch and striker (not shown).
Prior to the description of the door locking device, the rear door 4 opening and closing device will be described first.

As shown in FIG. 5, the rear door 4 is supported by the swing slide unit U, and as shown in FIGS. 1 and 3, a closed position D1 for closing the rear entrance / exit 3 and a protruding position D2 protruding outside the vehicle from the closed position D1. The controller 30 is slidably supported at a fully open position D3 slid rearward from the protruding position D2, and a controller 30 serving as a control means for controlling the opening / closing thereof is provided in the rear door 4 (see FIGS. 1 and 4).
As shown in FIG. 1, the swing slide unit U that constitutes a main part of the door opening / closing device of the rear door 4 is attached in the vicinity of an intermediate portion in the vertical direction of a rear pillar 60 provided along the rear entrance / exit 3 of the vehicle body.
As shown in FIGS. 3 and 5, the base member 15, which is the base of the swing slide unit U, forms a fixing member for the side wall of the vehicle body, and the base end of the parallel link 16 and the base end of the door load support arm 18. And the cable ends poe and pce of the opening / closing drive mechanism 19 and the wire harnesses 49 and 51 are attached.

In addition to the door glass, in the space in the rear door 4, the door support rail 22, the slider 24 fitted to the door support rail 22, the door side member of the opening / closing drive mechanism 19, and the electrical equipment provided in the rear door 4 A controller 30 as control means is provided (see FIG. 1).
The parallel link 16 has a function of positioning the movement locus and each position of the rear door 4. The front and rear connecting pins 246 and 245 of the front arm 31 and the rear arm 32 of the parallel link 16 are respectively connected to the vicinity of the front and rear ends of the slider 24.
As shown in FIGS. 1 and 3, the rear door 4 is provided with a motor M and a take-up drum 46 and a plurality of intermediate rollers Po <b> 2 and Pc <b> 2 that constitute a drive source of the opening / closing drive mechanism 19. As shown in FIGS. 3 and 5, the door load support arm 18 mounted above the parallel link 16 is pin-coupled to a base end boss portion 41 formed on the base member 15 side on the vehicle body side. 44, a second support arm 61 pin-coupled to the pivot end (base end) thereof, and a door-side pivot portion 37 to which the swing end of the second support arm 61 is pin-coupled. With such a door load support arm 18, the load at the center of gravity of the rear door 4 is always transmitted to and supported by the base member 15.

As shown in FIGS. 3 and 5, the door support rail 22 of the rear door 4 has a main and sub rail groove formed long in the front-rear direction X therein, and a plurality of rollers r <b> 1 and r <b> 2 are provided inside the door support rail 22. The slider 24 is slidably fitted. Accordingly, the slider 24 swings by the parallel link 16 and the door support rail 22 can slide in the front-rear direction X with respect to the plurality of rollers r1 and r2 of the slider 24.
Next, the opening / closing drive mechanism 19 provided in the rear door 4 includes a motor M disposed in the rear door 4, a winding drum 46 that is wound around the motor M and driven so as to be rewound, and a winding drum. An open cable 49 and a closed cable 51 (see FIG. 3C) that can be freely wound around 46, a front end pulley po1 of the door support rail 22 around which the open cable 49 is wound, and the closed cable 51 are wound. An open cable 49 supported by the base member 15 and the end pulley pc1 at the rear end of the door support rail 22; the first pulley 23f on the front side of the slider 24; the second pulley po2 (front intermediate pulley) on the front arm 31; A cable end poe to which the anchor portions are connected, a first pulley 23r on the rear side of the slider 24, a second pulley pc2 (rear intermediate pulley) on the rear arm 32, a base It is supported by the member 15 and a cable end pce and connected with an anchor portion of the closing cable 51.

As shown in FIGS. 2 and 3, the controller 30 uses the swing slide unit U and the opening / closing drive mechanism 19 to close the rear door 4, a closed position D1 that closes the rear entrance / exit 3, and a protrusion that protrudes outside the vehicle from the closed position D1. Open / close control is performed to the position D2 and the fully open position D3 slid rearward from the protruding position D2, and door lock control is simultaneously performed. Here, the door lock control of the controller 30 will be mainly described.
As shown in FIGS. 1 and 2, a main controller 70 on the vehicle body side is connected to the controller 30 to exchange signals with each other, and a power supply circuit 71 is connected to the controller 30 via a wire harness k1. The Here, the controller 30 includes a connection / disconnection detection function unit 301 that determines a connection / disconnection state when the wire harness k1 side is connected / disconnected to the power supply side during maintenance.

  The input port (not shown) of the controller 30 includes an engine key switch 900, an input panel switch 901, front and lower lock units J1, J2 and rear lock unit J3 pole switches swa, a half latch position sensor swb, Each input signal is input from the full latch position sensor swc, and when a preset origin position is detected, a switching signal is input from the origin position switch swd. The pole switch swa is opposed to the pole 880 that restricts the return of the fork q0, and generates a switching signal when it swings.

On the other hand, output ports (not shown) of the controller 30 include motors M1f and M1r for driving a latch switching lever 82r (see FIG. 6), which is a swing operation member in each of the front and rear latch drive means 81, and latch release drive means. This is connected to a solenoid (not shown) that drives a release arm 801 of 80 (see FIG. 4).
As a result, the controller 30 performs door opening / closing control, which will be described later, and at the time of moving the door to the closed position D1, the front and lower front locking portions J1 and J2 and the latches q0 of the rear locking portion J3 facing each other are opposed to each other. Latch driving means 81 and latch release driving means 80 are driven and controlled to switch the striker 66s from the half latch state to the full latch state.

  In particular, the controller 30 serving as a control unit includes a function as an overrun detection unit 302 (see FIG. 2) and an initial home search control function unit 303 that stops the motors M1f and M1r at a predetermined home position Pb when the power is turned on. Prepare. Note that the initial home position control here can be performed at any position when the power is turned on, for example, after assembling the lines of the front upper and lower front lock portions J1 and J2 and the rear lock portion J3, or after replacing the vehicle battery. A function of stopping the motor stopped at the origin position Pb (for example, the position Ph in FIG. 7), the driving gear interlocked with the motor, the swing operation member, and the like is shown.

  Here, the overrun detection means 302 detects this when the latches q and q0 reach the predetermined overrun position Pp1 through the full latch position Pp from the state where the latches q and q0 have reached the half latch position (see FIG. 7). Then, it functions to output an overrun detection signal. The overrun position Pp1 is set in advance so as to be between the full latch position Pp and the overrun restraint position Pr (see FIG. 7) at which the pull-in functions of the latches q and q0 are mechanically restrained.

  When the initial home search control function unit 303 performs the initial home search to stop the motor at the predetermined home position Pb, as shown in FIG. 7, the motor that has stopped at the position Ph before starting the home search is unidirectional. And the latches q and q0 are displaced toward the overrun position Pp1, and then the overrun detection means 302 detects that the latches q and q0 have reached the overrun position Pp1. Then, the motor is controlled to be reversed.

  Note that the overrun detection means 302 here constitutes one control function unit provided in the controller 30 as the control means, but instead, an overrun detection means that is separated from the controller 30 is provided separately, where the latch q, When it is detected that q0 has reached the overrun position Pp1, the detection signal may be output to the controller 30 side.

Next, a door locking device for holding the rear door 4 to be opened / closed at the closed position D1 will be described with reference to FIGS. 3 (a) to 6 (c).
In the closed position D1, the front upper and lower lock portions J1 and J2 constituting the front door lock portion of the rear door 4 are removably locked to the center pillar 5 (see FIG. 3A) using the latch 661 and the striker 662, and the rear end The rear end lock portion J3 that forms the other side lock portion in the middle of the upper and lower sides is detachably locked to the rear pillar 60 using the latch 66r and the striker 66s.

In the rear door 4, each latch 66r (FIG. 6 (a)) of the front upper and lower lock parts J1, J2 and the rear lock part J3 interlocked via a cable 800 (see FIGS. 4 (a), (b)) at the front side lock part. ) To (c)) are provided with a latch drive means 81 and a latch release drive means 80 for switching the striker 66s from the half latch state to the full latch state. Both the drive means 81 and 80 are driven and controlled by the controller 30 (control means).
As shown in FIG. 1, the front upper and lower lock portions J1 and J2 are disposed on a center pillar 5 that connects a roof side rail 10 and a side sill 10c that constitute the upper and lower portions of the rear entrance 3 and further, the rear lock portion J3. Is arranged in a rear pillar 60 located on the rear side of the rear entrance 3 of the vehicle body. As shown in FIG. 3A, the striker 66s of the front upper lock portion J1 (the front lower lock portion J2 has the same configuration) is fastened and fixed to the center pillar 5 with a bolt (not shown), and the striker of the rear lock portion J3. 66s is fastened and fixed by an intermediate bolt (not shown) in the vertical direction of the rear pillar 60.

The rear door 4 held in the door closing position D1 is locked to the center pillar 5 using a latch 66r and a striker 66s that constitute the front upper lock portion J1 (the front lower lock portion J2 has the same configuration), and the rear lock portion J3. The rear pillar 60 is locked using a latch 66r and a striker 66s.
As shown in FIGS. 4A and 4B and FIGS. 6A to 6C, the latch driving means 81 is driven by a drive gear 811 driven by motors M1f and M1r and a drive gear 811. A latch switching lever 82r, which is a swing operation member that is swingably supported via a pivot 813 with respect to the bracket B1 (see FIGS. 6A and 6B).
Here, the front lower lock portion J2, the front upper lock portion J1, and the rear lock portion J3 have substantially the same configuration, and here, the front upper lock portion J1 will be described as a representative.

  The front upper lock portion J1 includes a latch switching lever 82r, which is a swing operation member supported so as to be swingable by a bracket B1 that forms a base thereof via a pivot 813, and a bracket B2 that is integral with the bracket B1 via a pivot 872. A fork q0 that is supported so as to be able to swing and is pressed by the other end of the latch switching lever 82r to swing, and is supported by the bracket B2 so as to be swingable via a pivot 873, and is selected as two protruding ends of the fork q0. And a pawl 880 capable of engaging and restricting the fork q0 to a half latch state or a full latch state.

  As shown in FIGS. 6A to 6C, the other end of the latch switching lever 82r rotates about the pivot 813 to switch the fork q0 from the half latch position to the full latch position. Here, the pole 880, which is urged clockwise around the pivot pin 873, sequentially engages the two ends of the fork q0, and each time the fork q0 is regulated and held at the half latch position and the full latch position. As shown in FIG. 7, ON / OFF switching is performed twice.

As shown in FIGS. 4 (a) and 4 (b), the latch release driving means 80 supported by the rear door 4 has both the front upper and lower lock portions J1, J2 and the rear lock portion J3 via the release arm 801 and the cable. It can be returned to the unlatched position.
Specifically, the latch release driving means 80 includes a release arm 801 (see FIGS. 4A and 4B) that is swung by a solenoid (not shown), and a fulcrum pin 803 around the release arm 801. A branch operation member 802 that leverages, and each pole 880 of the front upper and lower lock portions J1 and J2 and the rear lock portion J3 connected to the other swinging end of the branch operation member 802 via three coaxial cables 806 (FIG. 6 (a) to (c)).
As a result, when the latch release driving means 80 is driven and the poles 880 of the front upper and lower lock portions J1 and J2 and the rear lock portion J3 are released, the respective poles 880 rotate around the pivot pin 873 and the forks q0 can return to the unlatched position (see the solid line position in FIG. 6A).

Next, the operation of the rear door 4 will be described together with the door lock control routine of FIG.
This door lock control routine is executed at a predetermined control time in a main routine (not shown) performed by the controller 30, that is, whenever the rear door 4 approaches the closing position D1.
Here, in step A1, the controller 30 determines that the connection from the connection / disconnection detection means 301 and the ON signal of the engine key switch 900 are both on and connected to the power supply circuit 71, and determines that the power supply is connected. Proceed to In step A2, it is determined whether the rear door 4 is in the closed position (see FIG. 1) D1. If so, the process proceeds to step A3, and if the rear door 4 is open, the process proceeds to step A5.

In step A3, it is determined whether or not a door opening command has been received. If the door is not received, it is determined that the rear door 4 holds the closed position D1, and the process directly returns to the main routine (not shown). Otherwise, the process proceeds to step A4. .
If No in step A3, when the rear door 4 holds the closed position D1, the latches 661 and 671 of the front upper lock portion J1, the front lower lock portion J2 and the rear end lock portion J3 on the rear door 4 side are locked. The state is kept in a non-energized state. That is, the rear door 4 is locked to the center pillar 5 using the front upper lock portion J1 (the same applies to the front lower lock portion J3) and the latches 66r and the strikers 66s of the rear lock portion J3. In this case, as shown in FIG. 3A, the swinging ends of the rear arm 32 and the front arm 31 are drawn into the vehicle interior, and the door support rail 22 closes the rear door 4 together with the slider 24 of the swinging ends of both arms. The position (see FIG. 1) D1 is held.

  When the door opening command is received and the process proceeds to step A4, the controller 30 issues a lock release command, and the branch operation member 802 swings from the steady position to the release position, and in conjunction with this, the front upper, lower lock parts J1, J2 and Each of the poles 880 of the rear lock portion J3 is simultaneously released to release each latch 66r from each striker 66s, and as shown in FIG. 6 (a), the front upper, lower lock portions J1, J2 and the rear lock portion J3. To the unlatched position. At this time, the latch switching lever 82r (the motors M1f and M1r interlocked therewith) which are the swing operation members of the front upper, lower lock portions J1 and J2 and the rear lock portion J3 is moved to the origin position Pb (FIG. 6 (a )) And does not interfere with the return operation of each fork q0.

As a result, the rear door 4 is opened from the closed position D1, and swinging toward the protruding position D2 is allowed.
At this time, on the opening / closing control routine side of the main routine (not shown), the motor M is driven and, as shown by a two-dotted line in FIG. And the winding drum 46 winds the cable stretched between the stationary pulley po1 on the door support rail 22. As a result, the front arm 31 and the rear arm 32 interlocked therewith are oscillated and displaced from the closed position D1 to the oscillating position D2 shown in FIG.

  Next, the door support rail 22 side is illustrated relative to the slider 24 at the oscillating end of the parallel link 16 where the rear door 4 passes the oscillating position D2 and stops oscillating by the action of the opening / closing drive mechanism 19. The sliding operation is performed up to the fully open position D3 shown in 3 (c).

Next, assume that step A5 is reached.
Here, the passenger gets on and off using the rear entrance 3 and waits for the controller 30 to receive a door closing command. At this time, the motor M is driven, and the rear door 4 returns from the state of FIG. 3C to the swing position of FIG. 3B and moves toward the closed position D1 of FIG.

In step A6, it is determined whether the rear door 4 is directed to the closed position D1, and the front upper and lower lock portions J1, J2 have reached the half latch position. When the front upper lock part J1 and the front lower lock part J2 reach the half latch state, the pole switch swa is turned on, and then the half latch switch swb reaches the position Pc of FIG. The lower lock portions J1 and J2 are in the state shown in FIG.
At this time, the motor M1f is continuously driven to drive the latch driving means 81 in one direction rf1 (see FIG. 6C) so that the front upper and front lower lock portions J1 and J2 are fully latched from the half latch state (FIG. 6). When the full latch switch swc generates a full latch signal and the pole switch swa is turned on / off, the motor reversal position (full latch completion position during normal pull-in operation) Pp (FIG. 6C) The motor M1f is reversed, the motor M1f and the latch switching lever 82r are returned to the solid line position in FIG. 6A, which is the origin position Pb, and the process proceeds to Step A8.

In step A8, when the motor M1r of the rear lock unit J3 is continuously driven and a half latch state is detected, the process proceeds to step A9, where the rear lock unit J3 is switched from the half latch state to the full latch state (see FIG. 6C). When the latch switch swc issues a full latch signal, the motor M1r is reversed, the motor M1r and the latch switching lever 82r are returned to the origin position Pb, and the process returns to the main routine.
Next, the initial home search control for stopping the motor at the predetermined home position Pb, which is performed when the power is turned on after the motor is newly assembled or after the vehicle battery is replaced, will be described together with the door lock home position return control routine of FIG. To do.

This door lock origin position return control routine receives a predetermined control time in a main routine (not shown) performed by the controller 30, that is, a detection signal from the connection / disconnection detection means 301 that the controller 30 is connected to the power supply circuit 71, When the home search control timing is determined in step S1, the process proceeds to step S2.
In step S2, each input signal is fetched and stored from each of the pole switches swa, the half latch position sensor swb, the full latch position sensor swc, and the origin position switch swd of the front, lower lock part J1, J2 and rear lock part J3. .

In step S3, the input of the half latch sensor swb is determined, and it is determined whether the rear door 4 has been manually moved to the half latch position as shown in FIG.
At this time, it is assumed that the motors M1f and M1r and the latch switching levers 82r interlocked with the motors M1f and M1r are maintained at appropriate positions indicated by reference sign Pq in FIG. If the rear door 4 manually reaches the half latch position from such an appropriate position Pq and reaches the position Ph that receives the input of the half latch sensor swb, the controller 30 proceeds from step S3 to step S4, and the motor M1f, M1r and each latch switching lever 82r interlocked therewith are driven to the forward rotation side rf1, that is, the front upper, lower lock parts J1, J2 and rear lock part J3 are moved to a predetermined overrun position Pp1 (FIG. 6 (c), (See FIG. 7).

  Next, when reaching step s5, it is assumed that the half latch position sensor swb and the full latch position sensor swc are turned on and have reached the full latch position Pp, and then the motor is rotated in one direction (forward rotation side), Then, the overrun detection means 302 determines whether the latch has reached the predetermined overrun position Pp1 through the full latch position Pp. For example, when the half latch position sensors swb of the lock portions J1, J2 and the rear lock portion J3 are switched on / off, it is determined that the latch inversion position Pp1 has been reached. When it is detected that the overrun position Pp1 has been reached, the routine proceeds to step s6, where the motor is stopped.

  The overrun position Pp1 is set so as to be between the overrun restraint position Pr (see FIG. 7) at which the latch pull-in function is mechanically restrained. That is, a time point that is a predetermined amount t1 (see FIG. 7) before the time point when the latch 66r reaches the state in which the retracting function is mechanically constrained, that is, the fork q1 reaches the state where the striker 66s is excessively engaged and cannot be displaced. Is set to be Therefore, by determining that the overrun position Pp1 has been reached and reversing the motors M1f and M1r in step S7, it is possible to reliably prevent the retracting function of the latch 66r from being mechanically constrained.

Next, when step S8 is reached, the origin detection switch SWd waits for the ON operation, and the latch switching lever 82r, which is a swing operation member interlocked with the reversely rotating (reversing) motors M1f and M1r, is moved to the origin detection switch SWd (FIG. 6, FIG. 6). When the switch is turned on, the process proceeds to step S9, where the motors M1f and M1r are stopped, the latch switching lever 82r is stopped at the origin position Pb, and the process returns to the main routine.
As described above, at the normal time, the controller 30 drives the latch driving means 81 and the latch release driving means 80 according to the door lock control routine of FIG. 8, and the latches q0 of the front lock portions J1, J2 and the rear lock portion J3 are set. The latch drive means 81 and the latch release drive means 80 can be driven and controlled so that each of the opposing strikers 66s is switched from the half latch state to the full latch state.

  On the other hand, when performing the initial home position stop that stops the motor at a predetermined home position when the power is turned on after the motor is newly assembled or after the vehicle battery is replaced, the controller 30 performs the door lock home position return control routine shown in FIG. Thus, as shown in FIG. 7, the controller 30 manually moves the latch from the appropriate position Pq to the appropriate position Ph on the half-latch or full-latch position side, and then the controller 30 performs home position origination control. . In other words, when switching to the overrun position Pp1 is detected, when switching of the half latch signal is detected, the motors M1f and M1r are driven to reverse after the motor reverse position Pp1 is reached. For this reason, it is possible to prevent the latch 66r from moving to the overrun restraint position Pr where the latch 66r falls into a mechanical restraint state, and it is possible to prevent problems such as deformation and breakage of the latch mechanism portion, and fixing of the motor.

Similarly, when the motor side reaches the origin position Pb that is a predetermined distance away from the rear overrun position Pp1, the motors M1f and M1r are stopped at the origin position Pb and can be easily returned and corrected.
Furthermore, after the motor is reversed at the overrun position Pp1 before the pull-in function of the latch 66r is mechanically constrained, the motors M1f and M1r can be accurately stopped using the origin detection sensor SWd at the time of origin detection. The motors M1f and M1r can be easily returned to the original position Pb and corrected.
Next, a door locking device according to a second embodiment of the present invention will be described.

In the first embodiment, two motors M1f for driving the upper and lower lock portions J1 and J2 and two motors M1r for driving the rear lock portion J3 are required.
Here, instead of this, in the second embodiment shown in FIGS. 10 to 13, the latch driving means 81a and the latch for driving the front upper, lower lock portions J1, J2 and the rear lock portion J3 with one motor M1. The release driving means 80a is driven and controlled.
Note that the latch driving means 81a and the latch release driving means 80a have many overlapping portions as compared with the members of the first embodiment, description of these overlapping portions will be omitted, and different components will be mainly described. Furthermore, the components of the door locking device other than the latch driving means 81a and the latch release driving means 80a in the second embodiment are the same as the opening / closing device of the rear door 4 described with reference to FIGS. , Abbreviate duplicate explanation.

As shown in FIGS. 12 (a), 12 (b), 13 (a) and 13 (b), the latch driving means 81a mounted on the rear door 4 described above is a sector operation member 82a which is a swing operation member. An operation cable 86 and a latch switching lever 87 which are swing amount branching transmission members interlocked with this, a switching lever 83 pivotally supported by the fan-shaped operating member 82a, and a latch switching lever 84 pivotally supported by the pivot shaft 813 Is provided.
Here, the latch driving means 81a moves the fan-shaped operation member 82a in one direction r1 from the base position A (see the solid line position in FIG. 12A and FIG. 15) and swings it to one end position B (see FIG. 15). After moving, it moves backward in the other direction r2 (the solid line position in FIG. 13B and FIG. 14) and returns to the base point position A (see FIG. 15). Thus, until the next door opening command is input, the latches q of the front lock portions J1 and J2 and the latch q1 of the rear lock portion J3 are switched to the full latch position and stopped as shown in FIG.

As shown in FIGS. 12A, 12B, 13A, and 13B, the fan-shaped operation member 82a and the drive gear 811 that meshes with the fan-shaped operation member 82a are at the base position A (solid line in FIG. 12A). Position and forward in one direction r1 to reach one end position B, and then return in the other direction r2 (see FIGS. 13B and 14) to return to the base position A. .
The latch driving means 81a includes a drive gear 811 driven by the motor M1, a fan-shaped operation member 82a, a switching lever 83 supported by the main part of the fan-shaped operation member 82a and a switchable lever 83, and a bracket B1 via a pivot 813. A latch switching lever 84 that is supported, and a release lever 85 that is pivotally supported by the bracket B1 to perform switching operation are provided.

As shown in FIGS. 12 (a) and 12 (b), the fan-shaped operation member 82a has a front upper lock portion J1 {a front lower lock portion J2 is also configured to be interlocked with a cable 800 (see FIG. 4)}. One end of a drive cable 86 (indicated by a two-dot chain line in FIGS. 4A and 4B) that switches from the latch position to the full latch position is pin-coupled.
Here, the latches 661 and 671 of the front upper and lower lock portions J1 and J2 and the rear lock portion J3 have the same configuration as the latch 66r shown in FIGS. 6A to 6C, and redundant description is omitted.

Also in this case, the latch release driving means 80a adopts the same configuration as the latch release drive means 80 shown in FIGS. 4A and 4B, operates in the same manner, and the front and lower lock portions J1 and J2 have the pole 881 and the release. The pawl 882 of the rear lock portion J3 interlocked with the lever 85 can be released. At this time, the poles 881 and 882 rotate around the pivot pins 873 and 883, and the fork q returns to the unlatched position (see FIG. 12A). At the same time, the switching lever 83 and the pole 882 rotate to return the fork q1 to the unlatched position.
Next, the opening / closing operation of the rear door 4 is often similar to the operation in the door lock control routine shown in FIG. 8 in the first embodiment, and here, the description of the door lock control routine shown in FIG. 16 will be simplified. .

In the door lock control routine in the second embodiment, in step A1 of the door lock control routine shown in FIG. 16, both the signal from the connection / disconnection detection unit 301 and the on signal of the engine key switch 900 are on, and the controller 30 It is determined that the power source is connected to the power supply circuit 71 and the main controller, and the process proceeds to step A2.
In step A2, it is determined whether or not the rear door 4 is in the state of holding the closed position (see FIG. 1) D1, and if so, the process proceeds to step A3. If it is determined that a door opening command is received, the process proceeds to step A4.

When the door opening command is received and the process proceeds to step A4, the controller 30 issues a lock release command, and in conjunction with the branch operation member 802, the poles 881 and 882 of the front upper and lower lock portions J1 and J2 and the rear lock portion J3 are simultaneously opened. Release operation. As a result, the latches 661 and 671 (corresponding to the reference numeral 66r in FIG. 3) are detached from the strikers 662 and 672 (corresponding to the reference numeral 66s in FIG. 3), and as shown in FIG. The lower lock portions J1, J2 and the rear lock portion J3 are switched to the unlatched position.
As a result, the rear door 4 is opened from the closed position D1, and swinging toward the protruding position D2 is allowed.

In step A5, it waits for a door closing command to be received, and if it is input, the process proceeds to step A6 '. At this time, the motor M is driven on the main routine side, and the rear door 4 is moved as shown in FIGS. It moves sequentially and moves toward the closed position D1.
In step A6 ′, the upper and lower lock sections J1 and J2 wait for the half-latch position to be reached, the pole switches sw1 and sw4 are turned on, and then the half-latch switches sw2 and sw5 issue a half-latch-on signal. It is assumed that the lock portion J1 and the front lower lock portion J2 are switched to the half latch position Pc shown in FIGS. 11 and 12B.

  At this time, the process proceeds to step A7 ', the motor M1 is continuously driven, the latch driving means 81a is driven in one direction r1, and the front upper and front lower lock portions J1, J2 are driven toward the full latch position Pp. If it is determined in step A8 ′ that the full latch switch sw3 emits a full latch signal, the process proceeds to step A9 ′, where the motor M1 is driven reversely so that the rear lock portion J3 is moved to the full latch position Pp ′ (see FIG. 13B). Drive towards. If it is determined in step A10 'that the full latch position Pp' has been reached, the motor M1 and the latch switching lever 84 are stopped in step A11 ', and the process returns to the main routine.

Next, when initial home search is performed to stop the motor at a predetermined home position when the power is turned on after the motor is newly installed or the vehicle battery is replaced, the operation of the rear door 4 is controlled by the door lock home position return control shown in FIG. It will be explained together with the routine.
The door lock origin position return control routine of FIG. 17 overlaps with the door lock origin position return control routine of FIG. 9, and the explanation of the overlapped part is simplified.

  When step B1 is reached, it is determined from the detection signal from the connection / disconnection detection means 301 that the controller 30 is connected to the power supply circuit 71. In step B2, the front upper, lower lock portions J1, J2 and rear lock portion J3 are detected. Each input signal is fetched and stored from each of the pole switches sw1 and 4, half latch position sensors sw2 and sw5, full latch position sensors sw3 and sw6, and the origin position switch sw7. As shown in FIG. 13 (b), the origin position switch sw7 is formed so as to be turned on when it comes into contact with the convex portion e projecting from the rotating edge of the fan-shaped operation member 82a. The fan-shaped operation member 82a to be interlocked is provided in advance so as to be turned on when it reaches a preset origin position Pb.

In step B3, input of the half latch sensors sw2 and sw5 is determined, and when the power is turned on, as shown in FIG. 11, it is determined whether the rear door 4 is manually moved to the half latch position Pc or the full latch position Pp.
In this case, it is assumed that the latch switching levers 84 and 87 interlocked with the motor M1 are held at appropriate positions indicated by reference sign Pq in FIG. 12A after maintenance.

  When the rear door 4 manually reaches the appropriate position Ph beyond the half latch position Pc or the full latch position from such an appropriate position Pq, and receives the inputs of the half latch sensors sw2 and sw5, the controller starts from step B3 to step s4. Then, the motor M1 and the latch switching lever 87 interlocked therewith are driven to the forward rotation side r1 (see FIG. 12A), that is, the front upper and lower lock portions J1 and J2 are moved to the overrun position Pp1 (FIG. 13). (See (a)). Next, when step B5 is reached, for example, on / off switching of the half latch position sensor sw2 is detected, and the full latch position sensor sw3 is turned on to reach the full latch position Pp. Subsequently, a predetermined value is passed through the full latch position Pp. It is detected that the overrun position Pp1 is reached (see time point th in FIG. 11).

When the overrun position Pp1 is reached and the process proceeds to step B6, the motor M1 is stopped, reversed, and driven toward the overrun position Pp1 ′ (see time point ti in FIG. 11).
Here, the overrun position Pp1 is set in advance so as to be a predetermined time t1 ′ (see FIG. 11) before the time when the latch 661 reaches the state where the pull-in function is mechanically restricted. Therefore, by determining that the overrun position Pp1 has been reached and reversing the motor M1 in step B6, the latch 661 can be reliably prevented from being mechanically constrained by the retracting function.

  Next, when step B7 is reached, the half latch position sensor sw5 is turned on / off, the full latch position sensor sw6 is turned on and reaches the full latch position Pp ', and subsequently, the predetermined overrun position is passed through the full latch position Pp'. Waiting for Pp1 ′ to be reached, the overrun detection means 302 determines the time of detection (see time point ti in FIG. 11).

When the overrun position Pp1 ′ is reached and the process proceeds to step B8, the motor M1 is once reversed after being stopped and driven toward the origin position Pb.
Here, it is determined that the overrun position Pp1 ′ has been reached and the motor M1 is re-inverted in step B8, whereby the pull-in function of the latch 671 moves to the overrun restraint position Pr ′ where the mechanically restrained state is achieved. Can be prevented and the restraint state can be reliably prevented.

  In step B9, the origin detection switch SW7 is awaited to be turned on. When the fan-shaped operating member 82a on the side of the latch switching lever 84 interlocked with the re-inverted motor M1 turns on the origin detection switch SW7, it is determined that the motor M1 and the sector-shaped operating member 82a interlocked with the origin position Pb have reached Step B10. move on. Here, the motor M1 is stopped, the motor M1 and the fan-shaped operation member 82a interlocked therewith are stopped at the origin position Pb, and the process returns to the main routine. As described above, the door locking device of the second embodiment is normally driven according to the door lock control routine of FIG. 16, and the front lower lock portions J1, J2 and the rear lock portion J3 are fully latched from the half latch state, respectively. The latch drive means 81a and the latch release drive means 80a can be driven and controlled to switch to the state.

  In particular, when an initial home position search is performed to stop the motor at a predetermined home position Pb when the power is turned on after the motor is newly assembled or the vehicle battery is replaced, the door shown in FIGS. 12 and 13 is used by the controller 30a. As shown in FIG. 11, the lock origin position return control routine is executed. As a result, the latches 661 and 671 are manually moved from the appropriate position Pq to the appropriate position Ph on the half latch position side, and then the controller 30a. Thus, displacement is made toward the overrun position Pp1. Here, when the overrun position Pp1 is reached, the motor M1 is driven reversely, and then when the overrun position Pp1 ′ is reached, the motor M1 is driven reversely again, and further, the origin separated from the overrun position Pp1 ′ by a predetermined amount. When the motor M1 reaches the position Pb, the motor is stopped at the origin position Pb, so that the initial origin return for returning the motor to the origin position Pb can be easily performed.

In particular, the front and rear latches 661 and 671 can be prevented from falling into a mechanical restraint state, and the motor is stopped at the origin position when the motor side reaches the origin position separated by a predetermined amount from the rear overrun position. Can be easily returned and corrected. In addition, since the front upper and lower lock portions are interlocked with each other, it is not necessary to add a motor, the cost can be reduced, the weight of the device can be reduced, and the degree of freedom of layout in the door is improved. Furthermore, using the origin detection sensor SW7, the motor M1 and the fan-shaped operation member 82a side linked to the motor M1 can be accurately stopped at the origin position Pb, and can be easily returned and corrected.
Further, since the motor M1 is reversed and re-inverted at the time of detection of the overrun positions Pp1 and Pp1 before the pull-in function of each latch 661 and 671 is mechanically constrained, the mechanical operation of each latch 661 and 671 is performed. Occurrence of the restraint state can be prevented, and problems such as deformation and breakage of the latch mechanism portion and adhesion of the motor do not occur.

  Furthermore, in the second embodiment, the operation cable 86 that is a swing amount branching transmission member that is interlocked with the fan-shaped operation member 82a (oscillation operation member), and the latch that is interlocked with each switching operation force from the latch switching levers 84 and 87. Since the 661 and 671 are switched from the half latched state to the full latched state with respect to the strikers 662 and 672, the swing amount branch transmission member can increase the degree of freedom of the layout of the lock device. In addition, the swing of the swing operation member is distributed and transmitted to two or more swing amount branching transmission members (the operation cable 86 and the latch switching levers 84 and 87), so that the plurality of latches are in the fully latched state from the half latched state. There is an advantage that the cost can be reduced easily.

  In the above description, the present invention is applied to the left rear door 4. However, the present invention can be similarly applied to the right side, and the present invention can be similarly applied to the left and right doors of a two-door vehicle. An effect is obtained.

1 is a schematic side view of a vehicle in which a door locking device according to an embodiment of the present invention is employed. It is a control block diagram of the controller used with the locking device of the door of FIG. It is opening / closing operation | movement explanatory drawing of the locking device of the door of FIG. FIGS. 2A and 2B are operation explanatory views of the door lock device of FIG. 1, in which FIG. 1A illustrates a rear door unlocking operation, and FIG. It is a principal schematic sectional drawing of the door provided with the door lock apparatus of FIG. FIG. 2 is an explanatory diagram of a schematic configuration of a lock unit shared by the front upper and lower and rear lock units of the door lock device of FIG. The operation | movement chart of the latch in the lock part shared by the front upper / lower and rear lock part of the door lock apparatus of FIG. 1 is shown. It is a flowchart of the door lock control routine used with the door lock apparatus of FIG. It is a flowchart of the door lock origin position return control routine used with the door lock device of FIG. It is a control block diagram of the controller used with the door locking device in 2nd Embodiment of this invention. FIG. 11 is an operation chart of a latch in the front and upper lock portions and a latch in the lock portion of the rear lock portion of the door lock device of FIG. 10. FIG. 11 is a schematic configuration explanatory view of the front upper and lower and rear lock portions of the door lock device of FIG. 10, (a) is a latch in the upper and lower and rear lock portions, and (b) is a half latch state in the upper and lower and rear lock portions. Indicates. FIG. 11 is a schematic configuration explanatory view of the front upper and lower and rear lock portions of the door lock device of FIG. 10, (a) is a state in which the latch in the front lock portion reaches the full latch, and (b) is a state in which the latch in the rear lock portion has reached the full latch. Indicates the state. It is lock operation explanatory drawing of the rear lock part in the door lock apparatus of FIG. It is rocking | fluctuation range explanatory drawing of the rocking | fluctuation operation member of the door lock apparatus of FIG. It is a flowchart of the door lock control routine used with the door lock apparatus of FIG. It is a flowchart of the door lock origin position return control routine used with the door lock device of FIG. It is opening / closing operation | movement explanatory drawing of the conventional locking device of a door. It is operation | movement explanatory drawing of the latch drive means of the locking device of the door of FIG. The operation | movement chart of the latch in the locking part of the locking device of the door of FIG. 18 is shown.

Explanation of symbols

3 Rear entrance 4 Rear door 30 Controller (control device)
66r, 661, 671 Latch 66s, 662, 672 Striker 71 Power supply 80 Latch release drive means 81 Latch drive means 82a Fan-shaped operation member (oscillation operation member)
82r Latch switching lever (swinging operation member)
83 Switching lever 84, 87 Latch switching lever (oscillating amount branch transmission member)
85 Release lever 86 Operation cable (oscillation amount branch transmission member)
880, 881, 882 Paul q0, q, q1 Fork B Car (body)
D1 Closed position J1, J2 Front up / down lock part J3 Rear lock part M1, M1f, M1r Motor Pq, Ph Appropriate position Pp1, Pp1 'Overrun position Pb Origin position

Claims (6)

A door that opens and closes the door opening of the vehicle body,
A door locking portion for holding the door in a closed position by meshing a latch supported on either the door or the edge of the door opening with a striker fixed to the other;
Latch driving means for rotating the motor in one direction and meshing the latch with the opposing striker to switch from the half latch position to the full latch position;
Control means for driving and controlling the latch driving means;
In a door locking device comprising:
Overrun detection means for detecting that the latch has reached a predetermined overrun position from the half latch position via the full latch position;
When the control means performs initial home search to stop the motor at a predetermined home position when power is turned on, the motor is rotated in one direction to displace the latch toward the overrun position, A door locking device, wherein when the overrun detecting means detects that the latch has reached the overrun position, the motor is reversed. The door locking device according to claim 1,
The door overlock position is set such that the overrun position is set between the full latch position and an overrun restraint position where a retracting function of the latch is mechanically restrained. The door locking device according to claim 1 or 2,
A half latch sensor that outputs a half latch signal when the latch reaches a half latch position and switches the half latch signal when the latch reaches the overrun position;
The door overlock device is characterized by detecting that the latch has reached the overrun position by detecting switching of the half latch signal. In the door locking device according to any one of claims 1 to 3,
Comprising origin detecting means for detecting that the motor has reached the origin;
The door lock device according to claim 1, wherein the control means stops the motor when the latch is in a fully latched state and the origin detecting means detects that the motor has reached the origin. The door locking device according to any one of claims 1 to 4,
The latch driving means switches the latch, which is interlocked by each switching operation force from the swing amount branch transmission member interlocked with the swing operation member swinged by the motor, from the half latch state to the full latch state with respect to the striker. Door lock device characterized by. The door locking device according to any one of claims 1 to 5,
The door locks are provided on the front and rear sides of the door opening,
When the origin of the motor is determined, the control means rotates the motor in one direction to displace the latch of the front lock portion toward the front overrun position, and then the latch of the front lock portion is When it is detected that the overrun position has been reached, the motor is driven reversely to displace the latch of the rear lock portion toward the rear overrun position, and the latch of the rear lock portion is moved to the overrun position. When it is detected that the position has been reached, the motor is reversely driven again, and then the motor is stopped at the origin position.

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