JPH05302458A - Control method for actuator drive type lock device - Google Patents

Abstract

PURPOSE:To more surely judge the operating condition of a lock device which can be operated by an operation signal. CONSTITUTION:A trunk lock device which is provided for locking or unlocking at opening or closing the trunk lid of an automobile, is driven by a motor 37 so as to automatically lock or unlock. A limit switch LS5 to detect the locking condition by changeover on the lock side, and a limit switch LS4 to detect the unlocking condition by changeover on the unlock side are provided. Even if the limit switch LS4 on the unlock side is changed to the lock detecting condition when the device is driven on the lock side by the motor 37 according to a lock signal, when the limit switch LS5 on the lock side is left to be in the unlock detecting condition after the lapse of a decided time T3, a trouble signal is output. The trouble condition can be surely judged, by detecting both limit switch signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a method for controlling a lock device which is selectively driven by an actuator in either one of two states of locking and unlocking.

[0002]

2. Description of the Related Art For example, in a lock device for a trunk lid of an automobile, a key is used to directly lock / unlock the trunk to open / close the trunk, and a remote control lever provided in the passenger compartment is used to lock a wire or the like. It is known to mechanically perform a locking / unlocking operation via the.

In some of the lock devices having the above structure, the key cylinder is driven by an actuator such as a motor to automatically operate the lock device in response to a lock or unlock operation signal. By the way, when it is attempted to lock the lock device in a state where the foreign matter is caught in the latch mechanism, it is conceivable that the lock device is not completely locked. In such a case, it is difficult to confirm the locked state at the remote operation position in the actuator drive type lock device operated by remote operation. Although it is possible to confirm the normal operation of the lock device by operating sound, there is a problem that it is difficult to judge.

[0004]

SUMMARY OF THE INVENTION In view of the above problems of the prior art, the main object of the present invention has been improved to more surely judge the operating state of the lock device which can be operated by an operation signal. An object of the present invention is to provide a control method of an actuator drive type lock device.

[0005]

According to the present invention, there is provided a method for controlling a locking device which is selectively driven by an actuator in either one of a locked state and an unlocked state. The process of outputting a drive signal corresponding to each lock and unlock operation signal to the actuator by the control means, the first detection switch that switches when the lock device is in the locked state, and the lock device In the process of detecting the respective states of the lock device by the second detection switch which is switched when the unlocked state is reached, and when either one of the drive signals is output, the both detection switches are Achieved by providing a method for controlling an actuator drive type lock device, which is characterized in that failure judgment is performed when the detection state corresponding to the one drive signal is not switched. That. In particular, when the unlocking drive signal is output, when both the detection switches do not switch to the detection state corresponding to the unlocking state, the locking drive signal is output, or the locking drive signal is output. When one of the two detection switches is in the detection state corresponding to the unlocked state and the other is in the detection state corresponding to the locked state, the unlock drive signal is output. After that, the locking drive signal may be output.

[0006]

In this way, both detection switches are switched to the locked detection state when the locking drive signal is set, and both detection switches are unlocked when the unlocking operation signal is set. Since the state is switched to the detection state, it can be determined that there is a failure if either one of the detection switches is in a different detection state that does not correspond to the operation signal. Further, when the unlocking drive signal does not completely move to the unlocked state, the locked state can be maintained until the repaired state. Also,
If one of the two detection switches is unlocked and the other is locked when the lock drive signal is output, it can be determined that the switch was in an incomplete state. The locking operation can be performed completely by making the locking operation after the locked state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side view of an automobile to which a roof according to the present invention is automatically attachable / detachable.
It is the same as that disclosed in Japanese Patent Publication No. -79429. In FIG. 1, a roof 2 that covers the upper part of the vehicle body 1 is supported at its front edge by a roof front cross member 3 and at its rear edge by a gate-shaped roll bar 4 behind the vehicle. And is detachably attached to the vehicle body 1.
Both sides of the front edge of the roof 2 are selectively coupled by a side locking device (not shown) of a manual latch structure, and the vicinity of both sides of the rear edge of the roof 2 of the roll bar 4 is tilted to tilt the roof 2. A pair of left and right tilt devices 5 provided on both pillars are selectively coupled to the projecting ends by a center lock device (not shown) having a manual latch structure.

In the present vehicle, the roof 2 is automatically accommodated in the trunk lid 6 and is automatically mounted on the roof portion of the vehicle body 1. The trunk lid 6 is supported on the rear part of the vehicle body 1 so as to be vertically displaced while being held in a substantially horizontal state as shown in FIG. 2 together, and can be lifted and lowered by a motor driving device (not shown) having a screw jack structure. Has been done. A pair of left and right slide shafts 7 that can be retracted toward the roof 2 side at the upper limit are slidably supported on both sides of the trunk lid 6, and a push-pull cable (not shown) is provided. The motor is driven via the.

Further, in order to automatically raise and lower the trunk lid 6 for housing the roof 2, the trunk lock device 8 as a locking device of the present invention for locking and unlocking the trunk lid 6 is provided as a vehicle. It can be operated remotely from the room. Both side windows 9 are driven by a motor (not shown) to open and close, and a rear window (not shown) is also opened and closed by a motor to improve a feeling of opening when the roof 2 is removed. There is.

An outline of the operation of attaching and detaching the roof 2 of the automobile thus constructed will be described below with reference to FIGS. 1 to 4.

First, when opening the roof 2 when the roof 2 and each window are fully closed, the side lock device is released to bring the front edge of the roof 2 into a free state. Then press the roof operation switch, but at this time,
If the side window 9 is fully closed, the side window 9 is fully opened to avoid interference with the roof 2 (FIG. 1).

Next, the trunk lock device 8 is unlocked,
The trunk lid 6 rises, the tilting device 5 lifts the rear edge of the roof 2, and the two are aligned with each other. In this state, the slide shaft 7 projects from the front end of the trunk lid 6 toward the roof 2, and the tip end portions of the slide shaft 7 are recessed in the corresponding holes on both side portions of the roof 2 (FIG. 2). The slide shaft 7
When the vehicle is in the predetermined immersion state, the center lock device provided on the roll bar 4 is manually operated to release the combined state of the roof 2 and the tilt device 5, and the roof 2 and the slide shaft 7 are separated from each other. Put in a combined state.

When the tilt device 5 is lowered and the slide shaft 7 is housed in the trunk lid 6, the roof 2 is also housed in the trunk lid 6 while being supported by the slide shaft 7 (FIG. 3). Then, when the trunk lid 6 is lowered and the trunk is fully closed, the trunk lock device 8 is locked, and the open mode for accommodating the roof in the trunk ends (FIG. 4).

In the case where the roof accommodation state of FIG. 4 is changed to the roof mounting state of FIG. 1, the side window 9 is first fully opened and then the operation reverse to the above is performed. Can be put on.

Next, the circuit configuration as the control means of this apparatus will be described below with reference to FIG. As shown in FIG.
The control unit 10 that controls the present device includes a constant voltage circuit 11 that is connected to a power supply terminal of a battery BT and supplies a constant voltage (Vcc) to each circuit, a CPU 12 that performs main control of the present device, and a CPU 12. A reset circuit 13 that resets when an abnormality occurs, a standby circuit 14 that controls when dark current is supplied when the engine is stopped, and an operation switch signal CP
The switch input circuit 15 input to U12, the condition detection input circuit 16 inputting each condition signal of the roof opening / closing operation to the CPU 12, and each position signal during the roof opening / closing operation to the CPU1.
2, a position detection input circuit 17, an alarm system drive circuit 18 that outputs an alarm signal for informing the operator of the operating state of the roof according to the CPU 12, and a power window drive circuit that outputs a drive signal for opening and closing each window. 19,
It has a roof system drive circuit 20 that outputs a signal for driving the roof 2 and the trunk lid 6, and a rotation detection input circuit 21 that inputs a rotation state signal of a predetermined drive motor to the CPU 12. Further, an ignition switch IG is provided between the power supply terminal of the battery BT and the input terminal of the standby circuit 14.

Between the ignition switch IG and the switch input circuit 15, the driver side window switch 22 for opening and closing the driver side window 9 and the passenger side window 9 are opened and closed. Front passenger side window switch 23, a rear window switch 24 for opening and closing the rear window, a trunk switch 25 for remotely controlling the opening and closing of the trunk lid 6 from the passenger compartment, and an automatic opening and closing of the roof 2. And a roof switch 26 as an operation switch of the. The respective switch operation signals are sent to the CPU 12 via the switch input circuit 15.
Entered in.

The driver's seat side window switch 22 is manually operated to open and close the side window 9 only while it is being pressed, and when it is pressed once for a predetermined time or more, it is continuously opened and closed without being pressed thereafter. Automatic operation for
It is designed so that it can be discriminated in cooperation with 2 and selectively performed. That is, the open and closed contacts are configured so that when manual is selected, only the manual contact is turned on, and when automatic is selected, both the manual and automatic contacts are turned on. The contacts are the power window drive circuit 19 and the CPU
12 and the automatic contact is C
It is connected only to the PU 12, and the CPU 12 can detect the ON state of both contacts and judge that the automatic mode is selected.

The passenger's seat side window switch 23 and the rear window switch 24 can be operated only manually, and have respective open side and closed side selection contacts.
It is directly input to the power window drive circuit 19 and also input to the CPU 12. The manual opening / closing signal line of each window directly input to the power window driving circuit 19 is selectively grounded via the transistor Q1, and the manual opening / closing line for the rear window is a transistor. It is also designed to be selectively grounded through Q2. These transistors Q1
Q2 is turned on / off in response to a control signal from the CPU 12, and when turned on, the input of each of the above manual opening / closing signals to the power window drive circuit 19 is prohibited. For example, when the operation of each window is prohibited during the opening / closing operation of the roof 2, the transistors Q1 and Q2 are
This is possible by appropriately turning on.

The trunk switch 25 has selection contacts on the open side and the closed side so that the locking / unlocking by the latch mechanism and the automatic raising / lowering of the trunk lid 6 can be performed manually. Reference numeral 26 is for making the automatic operation of the present device, and has opening / closing side and reverse rotation side selection contacts. Each of these contacts is connected to the CPU 12 via the switch input circuit 15.

The L terminal signal of the AC generator (ACG) and the vehicle speed signal are sent to the CPU via the condition detection input circuit 16.
12 and the switch signals of the limit switches LS1 to LS3 for detecting the operation start condition of the present apparatus are sent to the CPU via the condition detection input circuit 16.
12 is input. The limit switch LS1 is switched when the parking brake is operated, and the limit switch L
S2 is switched when the rear window is fully closed, and the limit switch LS3 is switched when the side lock device that latches the front edge of the roof 2 is locked. The respective condition detection signals are input to the CPU 12 via the condition detection input circuit 16, and the condition confirmation means is configured in this way.

The position detection input circuit 17 receives the switch signals of the limit switches LS4 to LS15 for detecting the operating state. Limit switch LS
4 is switched when the trunk lock device 8 is in a predetermined unlocked state, and the limit switch LS5 is switched when the trunk lock device 8 is in the half-latch state.
The limit switch LS6 is switched when the trunk lid 6 is fully closed, and the limit switch LS7 is
The trunk lid 6 is switched when it is in a half-open state (for example, 175 mm), and the limit switch LS8 is switched when the trunk lid 6 is in a fully-open state.

Further, the limit switches LS9 to LS11
Is configured to detect the fully closed / fully opened position of the roof 2 in the tilt direction and the operable position of the slide shaft 7 in the tilt direction of the roof 2. The tilt first limit switch LS9 is switched when it is in the fully closed / fully opened state, and the tilt second limit switch LS10 is switched.
Is switched when the height becomes equal to or higher than a predetermined height (for example, 80 mm), and the third tilt limit switch LS11 is switched when the height becomes equal to or lower than the predetermined height (for example, 80 mm).

Further, the limit switch LS12 is switched when the slide shaft 7 is stored, and the limit switch LS13 is switched when the slide shaft 7 is projected. Then, the limit switch LS14 is switched when the center lock is operated to bring the roof 2 and the tilt device 5 into a coupled (released) state, and the limit switch LS15 operates the center lock to switch the roof 2 and the slide shaft. 7 and join (release)
It is designed to switch when the state is reached. In this way, the operation confirmation means is configured.

At the output terminal of the above-mentioned alarm system drive circuit 18, there is provided a first sounding body for notifying the alarm as a sound.
Further, the second buzzers 27 and 28 are connected to the respective roof and trunk indicator lights 29 and 30 for visual recognition by the display provided on the instrument panel, for example. The buzzers 27, 28 and the indicator lights 29, 30 are supplied with a voltage via an ignition switch IG.

At the output terminal of the power window drive circuit 19, a driver window motor 31 for opening and closing the driver side wind window 9 and a passenger window for driving the passenger side window 9 are opened and closed. A motor 32 and a rear window motor 33 for driving the rear window to open and close are connected to each other and are driven independently of each other. In addition, the window detection motors 31 and 32 on the driver's seat side and the passenger's seat side respectively include a rotation detection pulse sensor P.
1.P2 is connected.

At the output terminals of the roof system drive circuit 20, a tilting motor 34 for the roof 2 and a slide shaft motor 35 for projecting / storing the slide shaft 7 are provided.
, A trunk raising / lowering motor 36 for raising / lowering operation of the trunk lid 6 and a trunk lock motor 37 for locking / unlocking operation of the trunk lock device 8 are connected to each other so that they can be independently driven. Is becoming Further, rotation detecting pulse sensors P3 to P5 are connected to the respective driving motors 34 to 36 for tilting, sliding shaft, and trunk elevating.

The rotation detection signals of the pulse sensors P1 to P5 are input to the CPU 12 via the rotation detection input circuit 21. In this way, the control circuit of this device is configured.

As described above, when the roof 2 is attached or detached, the trunk lid 6 automatically moves up and down, so that the trunk lock device 8 of this device can automatically perform the locking and unlocking operations. Has been done. In order to confirm the operation, the two limit switches LS4.
LS5 is provided. Limit switch LS4 is
It switches when the trunk lock device 8 is in the unlocked state, and the limit switch LS5 is
It is provided so that it can be switched when is locked.

Next, the operation procedure of the trunk lock device 8 which is locked / unlocked by the lock / unlock signal generated by the automatic operation of the roof 2 or the lock / unlock signal generated by the operation of the trunk switch 25 will be described. , With reference to FIGS. 6-12.

In FIG. 6, when the lock signal is generated, the limit switch LS5 which is switched on the lock side of the trunk lock device 8 is switched.
It shows a case where both the limit switch LS4 which is switched on the unlocking side of the trunk lock device 8 are in the unlocking detection state. In this case, when the trunk lock motor 37 is driven to the lock side, first, the unlock detection limit switch L
S4 is switched to the lock detection state, then the lock detection limit switch LS5 is switched to the lock detection state, and after the predetermined time T1 (for example, 200 msec) has elapsed from when the lock detection limit switch LS5 is switched to the lock detection state, the trunk lock motor 37 stops and the locking operation ends.

At this time, the state check of both limit switches LS4 and LS5 is started after a predetermined time T2 (for example, 500 msec) has elapsed from the start of driving the motor 37.
This is the same in each of the following cases. The reason why the motor 37 is driven for the predetermined time T1 is to perform the locking operation for a longer time so that the locking can be performed mechanically and reliably, and both limits are set when the motor 37 stops. The states of the switches LS4 and LS5 are checked, and if they are normal, no fault output is given.

In FIG. 7, when the lock signal is generated, the lock detection limit switch LS5 and the unlock detection limit switch LS.
Both 4 and 4 are in the unlocking detection state, the motor 37 is driven to the locking side, and the unlocking detection limit switch LS4 first switches to the locking detection state, but the locking detection limit switch LS5 does not switch to the locking detection state. The case is shown. In this case, the trunk clock motor 37 is stopped after a predetermined time T3 (for example, 2 seconds) has elapsed from the time when the motor 37 starts to be driven to the locking side, and a switch failure signal is output to perform, for example, the self-diagnosis function of the CPU 12. The light emitting diode 38 is used to indicate a failure in a predetermined display mode.

In FIG. 8, when the lock signal is generated, the lock detection limit switch LS5 and the unlock detection limit switch LS.
When both 4 and 4 are in the unlocking detection state, the motor 37 is driven to the locking side, and the locking detection limit switch LS5 is switched to the locking detection state without first switching the unlocking detection limit switch LS4 to the locking detection state. Is shown. In this case, the lock detection limit switch LS
The motor 37 is stopped after a predetermined time T1 has elapsed from the switching to the lock detection state of No. 5, the switch failure signal is output, and the failure display similar to the above is performed.

Next, FIG. 9 shows a case where, for example, the lock detection limit switch LS5 is in the lock detection state and the unlock detection limit switch LS4 is in the unlock detection state when the lock signal is generated. In this case, since both limit switches LS4 and LS5 are not in the same detection state, it is possible that the latch mechanism is in the half-latch state. Therefore, even if it is driven to the locking side as it is, a sufficient locking operation is performed. Therefore, the motor 37 is temporarily driven to the unlocking side for a predetermined time T3, and after a slight stop period T4 (for example, 30 msec), the motor 37 is again driven to the locking side for the predetermined time T3. By doing so, the latch mechanism of the trunk lock device 8 can be locked after the latch mechanism is completely unlocked, and the lock can be reliably performed. Both limit switches L
Even if the initial state of S4 and LS5 is the reverse of the above, it is the same.

Further, FIG. 10 shows the case where both the lock detection limit switch LS5 and the lock detection detection limit switch LS4 are in the lock detection state when the unlock signal is generated. In this case, when the motor 37 is driven to the unlocking side, the locking detection limit switch LS5 first switches to the unlocking detection state, and then the unlocking detection limit switch LS.
4 switches to the unlocking detection state, and after the predetermined time T1 has elapsed from the time when the unlocking detection limit switch LS4 was switched to the unlocking detection state, the trunk lock motor 37 stops and the unlocking operation ends.

In FIG. 11, when the unlock signal is generated, the lock detection limit switch LS5 and the unlock detection limit switch L
Both S4 and S4 are in the unlocking detection state, the motor 37 is driven to the unlocking side, and the locking detection limit switch LS5 is first switched to the unlocking detection state, but even if the motor 37 is driven for the predetermined time T3, the unlocking is performed. It shows a case where the detection limit switch LS4 has not been switched to the unlock detection state.
In this case, after the unlocking drive of the motor 37 is stopped, after a slight stop period, the motor 37 is driven to the locking side for a predetermined time T3, and a failure signal is output. This locking action is
This is because the trunk lock device 8 is held in the locked state until repaired, in order to avoid leaving the trunk lock device 8 in the unlocked state when it is considered that there is some kind of failure.

In FIG. 12, when the unlocking signal is generated, contrary to FIG. 11, the unlocking detection limit switch L LS5 is not switched to the unlocking detection state while the unlocking detection limit switch LS5 is switched to the unlocking detection state.
The case where S4 is switched to the unlocking detection state is shown.
In this case, after a predetermined time T1 has elapsed since the unlock detection limit switch LS4 was switched to the unlock detection state,
After the stop period T4, the motor 37 is driven to the locking side for a predetermined time T3 to output a failure signal. Also in this case, it is similar to the case of FIG. In addition, in the present embodiment, the trunk lock device 8 of the automobile is shown, but the present invention is also applicable to various other remotely operable lock devices.

[0039]

As described above, according to the present invention, the locking / unlocking operation of the lock device can be suitably controlled according to each case, and the failure state of the lock device capable of automatic operation can be reliably determined. In addition, in the event of a failure, driving to the locking side can prevent the unlocked state until repaired. When a so-called half-latch state is detected during locking, the locking operation can be performed with sufficient operating force by returning to the unlocking side and then performing the locking operation. The effect is extremely large as can be done.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view of an automobile to which the present invention is applied and which is capable of storing a roof.

FIG. 2 is a view corresponding to FIG. 1 showing a tilt-up state of a roof.

FIG. 3 is a view corresponding to FIG. 1 showing a state where the roof lid is stored.

FIG. 4 is a view corresponding to FIG. 1 showing a state where the roof is completely stored.

FIG. 5 is a schematic diagram of a control circuit according to the present invention.

FIG. 6 is a time chart showing an operation according to the present invention.

FIG. 7 is a time chart showing an operation according to the present invention.

FIG. 8 is a time chart showing an operation according to the present invention.

FIG. 9 is a time chart showing an operation according to the present invention.

FIG. 10 is a time chart showing an operation according to the present invention.

FIG. 11 is a time chart showing an operation according to the present invention.

FIG. 12 is a time chart showing an operation according to the present invention.

[Explanation of symbols]

 1 Vehicle Body 2 Roof 3 Roof Front Cross Member 4 Roll Bar 5 Tilt Device 6 Trunk Lid 7 Slide Shaft 8 Trunk Lock Device 9 Side Window 10 Control Unit 11 Constant Voltage Circuit 12 CPU 13 Reset Circuit 14 Standby Circuit 15 Switch Input Circuit 16 Condition Detection Input circuit 17 Position detection input circuit 18 Alarm system drive circuit 19 Power window drive circuit 20 Roof system drive circuit 21 Rotation detection input circuit 22 Driver side window switch 23 Passenger side window switch 24 Rear window switch 25 Trunk switch 26 Roof switch 27 First buzzer 28 Second buzzer 29 Roof indicator light 30 Trunk indicator light 31 Driver window motor 32 Passenger window motor 33 Rear window motor 34 Tilt operation motor 35 Sly Motor motor 36 trunk lifting shaft 37 trunk lock motor 38 light emitting diodes

Front page continuation (72) Inventor Yoshio Morishima 1-2681 Hirosawa-cho, Kiryu-shi, Gunma Mitsuba Electric Mfg. Co., Ltd. Tsuba Electric Works

Claims (3)

[Claims] 1. A method for controlling a lock device selectively driven by an actuator in either one of two states of locking and unlocking, wherein a control signal is generated by a drive signal corresponding to each operation signal of locking and unlocking. Output to the actuator by means of a first detection switch that is switched when the lock device is in the locked state, and a second detection switch that is switched when the lock device is in the unlocked state. According to the process of detecting each state of the lock device, and when one of the drive signals is output, when both the detection switches do not switch to the detection state corresponding to the one drive signal. A method for controlling an actuator-driven lock device, which comprises determining a failure. 2. When the unlocking drive signal is output,
The method for controlling an actuator drive type lock device according to claim 1, wherein when both of the detection switches do not switch to a detection state corresponding to the unlocked state, a lock drive signal is output. 3. When the locking drive signal is output,
When one of the both detection switches is in the detection state corresponding to the unlocked state, and the other is in the detection state corresponding to the locked state, the locking drive is performed after the unlocking drive signal is output. The control method of the actuator drive type lock device according to claim 1, wherein a signal is output.