JPH10317794A - Drive controller for auto slide door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate operator's burden by inhibitting automatic opening and closing of an auto slide door of a vehicle which is opened, closed, and driven by a motor after the next time when an intermediate limit switch which stops the auto slide door once at an intermediate position causes a failure. SOLUTION: A slide door operates in the directions of opening and closing in company with forward and reverse rotation of a motor. A fully open limit switch 10 and an intermediate limit switch 11 which detect that the slide door reaches a fully open position and an intermediate position, respectively, are provided. A control unit rotates the motor forward and reversely in accordance with the operation contents when the slide door is at the fully open position or a fully close position to operate it in the direction of opening or closing. When the slide door moves between the fully open position and the fully close position due to the automatic open and close operation, the motor is stopped when an abnormality of the intermediate limit switch 11 is detected, and the automatic opening and closing operation of the slide door by means of an operation switch is inhibitted after the next time on. Consequently, it is possible to eliminate operator's spiritual burden.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive control device for an automatic sliding door in an automobile driven by a drive device such as a motor.

[0002]

2. Description of the Related Art Conventionally, as an automatic sliding door device in a one-box vehicle, the one shown in FIG. 5 is generally used. In other words, the side walls of the vehicle body 51 have openings 5 for getting on and off.
2 are provided, and a slide door 53 is slidably supported. The slide door 53 is linked to a gear mechanism provided on a rotating shaft of a motor via a chain, a sprocket, and the like (not shown). The closing direction C toward the front side FR of the vehicle body 51 by the motor, It is driven in the opening direction O toward the side RR.
Further, in the automatic sliding door device that drives the sliding door 53 to open and close by using the motor as a driving source, the sliding door 53 reaches the fully open position Po when the sliding door 53 reaches the fully open position Po, and reaches the fully closed position Pc. A fully-closed limit switch 55 that is turned on at the time of turning on the vehicle and an intermediate limit switch 56 that is turned on when it reaches the intermediate position Pn slightly before the fully-closed position Pc at the time of the fully closing operation are provided.

At the time of full opening and full closing, the fully open limit switch 55 and the fully closed limit switch 56 are turned on and the power of the motor is turned off at the same time, and the slide door 53 is opened at the fully open position Po and the fully closed position Pc. Stop. When the intermediate limit switch 56 is turned on during full closing, the power supply of the motor is turned off, and the motor is temporarily stopped at the intermediate position Pn.
3 is configured to ensure safety during the closing operation.

When an abnormal state occurs in which the ON state of the intermediate limit switch 56 is not detected, the driving speed of the sliding door 53 is reduced when the sliding door 53 is closed, or the time required to reach the intermediate position Pn. By activating the timer circuit for measuring the time, and temporarily stopping the slide door 53 as the required time elapses,
A system for ensuring safety when the intermediate limit switch 56 has failed has been proposed by the present applicant (Japanese Utility Model Application Laid-Open No. HEI 4 (1994)).
-92979).

[0005]

However, in such a conventional auto-sliding door device, when the intermediate limit switch 56 fails, the closing direction operation is not disabled. Even if the driving speed of the slide door 53 is reduced, the occupant performing the closing operation of the slide door 53 is forced to pay attention until the slide door 53 reaches the fully closed position. Also, the intermediate position Pn
Even if the slide door 53 is once stopped based on the required time to reach, the movement speed of the slide door 53 varies, so that the stop position also slightly varies. Therefore, a person who performs the operation has a feeling of anxiety, and as a result, he is forced to pay attention until he reaches the fully closed position.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and reduces a mental burden applied to an operator of a slide door after a failure occurs in a switch for detecting a position where a stop is temporarily performed. An object of the present invention is to provide a drive control device for an automatic sliding door to be eliminated.

[0007]

According to a first aspect of the present invention, there is provided a driving means for driving a sliding door in an opening direction and a closing direction, and the sliding door is fully opened. Intermediate position detection means for detecting that the slide door has reached an intermediate position provided between the position and the fully closed position. When the intermediate position detection means detects that the slide door has reached the intermediate position, the slide door is closed. In the drive control device for temporarily stopping the slide door driven in the direction, and subsequently driving the slide door in the closing direction, when the slide door is driven from the fully closed position to the fully open position, the intermediate position detection means moves the slide door to the intermediate position of the slide door. When an abnormal state cannot be detected, the abnormal state detecting means for detecting the abnormal state and the abnormal state detecting means detecting the abnormal state. And a drive prohibition unit for prohibiting the drive unit from driving the slide door in the closing direction when the detection of the abnormal state is stored in the storage unit. .

In such a configuration, if a failure occurs in the intermediate position detecting means, the failure is detected when the slide door is driven from the fully closed position to the fully open position, while the slide door is driven by the driving means in the next and subsequent times. In the closing direction is prohibited.

[0009] In addition, in the invention of claim 2,
The abnormal state detecting means, in addition to when the slide door is driven from the fully closed position to the fully open position, and when the slide door is driven from the fully open position to the fully closed position, the intermediate position detecting means When an abnormal state where the arrival at the intermediate position cannot be detected occurs, the abnormal state is detected.

In this configuration, when a failure occurs in the intermediate position detecting means, it is detected even when the slide door is driven from the fully open position to the fully closed position. That is, when the slide door is driven from a position other than the fully open position or the fully closed position, the abnormal state detecting means does not detect the abnormal state of the intermediate position detecting means.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. That is, FIG. 2 is a perspective explanatory view showing the inside of a sliding door 1 constituting an automatic sliding door device using a motor as a driving source, similarly to that described in the related art, and FIG. FIG. 2 is an exploded perspective view showing a drive mechanism provided on a vehicle body side. First, a drive mechanism of the slide door 1 according to the present embodiment will be described. That is, the automatic sliding door unit 2 shown in FIG. 3 is fixed to a vehicle body side (not shown). The motor unit 3 and the sprocket 4 are attached to the automatic sliding door unit 2. The motor unit 3 includes a sliding door motor, a driving gear, and a magnet clutch for intermittently transmitting the torque between the two. Is housed. An endless motor belt 5 is stretched between the drive gear and the sprocket 4, and the motor belt 5 is pulled by a belt guide 6.

One connecting bracket 7 is provided on a part of the motor belt 5, and the other connecting bracket 8 is provided on the slide door 1. When the two connection brackets 7 and 8 are connected to each other, the slide door 1 operates in the opening direction O and the closing direction C via the motor belt 5 with the forward / reverse rotation of the motor (FIG. 2). In addition, the buzzer 9 that emits an alarm sound when the operation of the slide door 1 is started and the one of the connection brackets 7 come into contact with the automatic slide door unit 2 so that the slide door 1 reaches the fully open position Po. , The fully open limit switch 10 which is turned on and
A middle opening limit switch 11, which is an intermediate position detecting means of the present invention, which is turned on upon detecting that the slide door 1 has reached the middle opening position Pn, is provided. The operating positions of the sliding door 1 are the same as those shown in FIG. 5 in the related art.

When the slide door 1 is at the fully closed position Pc, a lock 12 is connected to a striker provided on the vehicle body, and a lockout actuator for releasing the lock state is provided inside the slide door 1. 13 and an auto closure 14 for driving the slide door 1 to the fully closed position Pc when the slide door 1 moves to just before the fully closed position Pc and the lock 12 is in the half-locked state.
And a closure control unit 15 for controlling the auto closure 14.

Next, the electrical configuration of the automatic sliding door device according to the present embodiment will be described with reference to the circuit diagram of FIG. That is, this circuit is configured around the control unit 21 of the automatic sliding door. The control unit 21 mainly includes a control circuit 22 and first to sixth relays 23,... 28 connected thereto. The control circuit 22 includes a CP (not shown).
U, a ROM in which a control program of the CPU and various parameters are stored, a RAM for storing various data in accordance with the operation of the CPU, a timer, an input / output device including an A / D converter, a D / A converter, and the like. Also, by operating based on the control program, it functions as the abnormal state detecting means, the storing means, and the driving inhibiting means of the present invention.

The control unit 21 is provided with a plurality of connection ends a to t. The connection end a is connected to the anode of the battery via the circuit breaker 29, and the connection end b is grounded to the vehicle body. .

The connection terminal c is connected to a parking brake switch 30 which is turned on when the parking brake is put into a braking state, and a parking brake lamp 32 in a meter block 31 which is turned on by the operation of the parking brake switch. The connection end d is connected to the L terminal of the alternator 33 from which a low signal is output when the engine speed is lower than a predetermined number or when the engine is stopped, and in the meter block 31 which is lit upon receiving the low signal. It is connected to a charge lamp 34. The connection end e is provided in the meter block 31 and is connected to a transistor 35 to which a vehicle speed signal from a speed sensor (not shown) is input.

The connection ends f and g are connected to the meter block 31.
Range switch 36, N range switch 37 in the inhibitor switch in the A / T control device connected to
Connected to each other. The P range switch 36
The switch is turned on when a shift lever (not shown) is shifted to P (parking).
Is a switch which is turned on in a state shifted to N (neutral). The connection end h is connected to a stop lamp switch 39 which is turned on when the foot brake is depressed and turns on the stop lamp 38. Also,
The connection end i and the connection end j constitute an operation switch 40 arranged in the passenger compartment and operated by an occupant, and have a normally open type open operation switch 40a and a close operation switch 40 which share the same movable contact connected to the ignition. 40b.

The connection ends k to p are provided on the aforementioned automatic sliding door unit 2 on the side of the vehicle body and are connected to electrical components. That is, connection ends l, m
Are respectively connected to both poles of a slide door motor 42 which is a driving means of the slide door 1 provided in the motor unit 3. The connection terminals n and o are connected to the full-open limit switch 10 and the intermediate limit switch 11, and the connection terminal p is connected to the buzzer 9. The connection end k is connected to a magnet clutch 43 provided in the motor unit 3. On the other hand, the connection end q is connected to the drive motor 44 of the lockout actuator 13 in the slide door 1, while controlling the drive motor 45 of the auto closure 14 via the drive motor 44. It is connected to the.

The connection end r is a door switch 46 which is turned off when the slide door 1 is at the fully closed position Pc.
And a room lamp 48 connected to the battery via a room lamp switch 47. The control unit 21 performs a predetermined operation even after the ignition switch is turned off by connecting the connection end s to the ignition switch and connecting the connection end t to the backup B power supply. You can do it.

Next, the operation of the present embodiment having the above configuration will be described with reference to the flowchart of FIG.
This flowchart shows a control procedure relating to the failure diagnosis of the middle-open limit switch 11 performed each time the operation switch 40 is operated.

That is, the control unit 21
The opening operation switch 40a or the closing operation switch 40
b, the operation switch 40
Is detected to have been opened or closed (Y in S1).
ES), it is determined whether or not the intermediate check flag is “0” (S2). This intermediate check flag is a flag for indicating whether or not the middle-open limit switch 11 is faulty. If "1" is set, it indicates a fault, and "0" is set. Is a flag indicating normal. Here, “1” is set in the intermediate check flag.
Is set (NO in S2), the buzzer 9 generates an alarm sound (S3), and then returns to step S1.

Conversely, if the intermediate check flag is set to "0" (YES in S2), the state of the fully open limit switch 10 and the door switch 46 is detected, and the slide door 1 is fully opened. It is determined whether it is at the position Po or the fully closed position Pc (S4). Here, if the sliding door 1 is at the fully open position Po or the fully closed position Pc, the intermediate check start flag is set to "1" (S5), and conversely, the sliding door 1 is set to a position other than the fully open position Po or the fully closed position Pc. If so, the intermediate check start flag is set to "0" (S6), and then each of the steps 7
Proceed to. Then, according to the operation content determined in step S1, the slide door motor 42 is rotated forward or backward to operate the slide door 1 in the opening direction O or the closing direction C (see FIG. 5).

Subsequently, the middle-open limit switch 11
Is determined to be in the ON state (S8). If the ON state is detected, "1" is set in the intermediate memory (S8).
9) The process proceeds to step S10, and if the ON state is not detected, the process directly proceeds to step S10. In the following step S10, the state of the full-open limit switch 10 and the door switch 46 is detected again to determine whether or not the slide door 1 has reached the fully-open position Po or the fully-closed position Pc. If not, the process returns to step 1. On the other hand, if it has reached either the fully open position Po or the fully closed position Pc, it is determined whether the intermediate check start flag is set to "1" (S11). That is, it is determined whether or not the slide door 1 has moved from the fully closed position Pc (or the fully open position Po) to the fully open position Po (or the fully closed position Pc).

If the result of the determination is NO, for example, the slide door 1 is not automatically opened and closed, and the fully open position Po to the fully closed position Pc is manually operated.
When the slide door 1 located between the positions is operated from the position to the fully open position Po or the fully closed position Pc by operating the operation switch 40, the slide door motor 42
Is stopped and the process is terminated. Conversely, if the result of the determination in step S11 is YES,
Further, it is determined whether "1" is set in the intermediate memory (S12). Here, when “1” is set, that is, the slide door 1 is moved from the fully closed position Pc (or the fully open position Po) to the fully open position P by the automatic opening / closing operation.
If the middle-open limit switch 11 operates normally while moving to o (or the fully closed position Pc), the intermediate check flag, the intermediate memory, and the intermediate check start flag are each set to “0” (S13). ), The slide door motor 42 is stopped, and the process is terminated.

Conversely, if the result of the determination in step S12 is NO and "1" has not been set in the intermediate memory, that is, if the middle open limit switch 11 is abnormal, After the intermediate check flag is set to "1", the slide door motor 42 is stopped and the process is terminated. Also, the contents of the intermediate check flag set here are stored and held in the RAM in the control circuit 22 by the B power supply even after the ignition is turned off. Thus, when the operation switch 40 is operated next time or later, the result of the determination in step S2 becomes NO, and the automatic opening / closing operation of the slide door 1 by the operation switch 40 is prohibited.

Therefore, when a failure occurs in the middle-open limit switch 11, when the sliding door 1 is closed, the driving speed of the sliding door 1 is reduced, or the stop position varies based on the driving time of the sliding door 1. In contrast to the case where the vehicle is temporarily stopped so as to cause the above, the occupant, especially the operator, is not alerted until the slide door 1 reaches the fully closed position. Therefore, it is possible to eliminate a mental burden applied to the operator of the slide door 1 when a failure occurs in the middle-open limit switch 11.

The failure of the middle-open limit switch 11 is determined by the automatic opening and closing operation of the slide door 1 to the fully closed position Pc.
Since the ON state can be detected only when moving from the full open position Po (or the full open position Po) to the full open position Po (or the fully closed position Pc), the ON state of the middle open limit switch 11 is set otherwise. Is not detected, there is no possibility that the middle open limit switch 11 is erroneously detected as a failure. Therefore, the failure of the middle limit switch 11 can be accurately detected.

In the present embodiment, the middle-open limit switch is used both when the slide door 1 is driven from the fully closed position Pc to the fully open position Po and when the slide door 1 is driven from the fully open position Po to the fully closed position Pc. 11 has been described, the failure detection operation is described as a fully closed position P
This may be performed only when driving from c to the fully open position Po. That is, in steps S4 to S5, the intermediate check start flag may be set to “1” only when the opening operation is performed from the fully closed state. In this case, when a failure occurs, only the operation in the closing direction C from the fully open position Po is disabled, so that the fully closed position Pc
The operation of the slide door 1 in the closing direction C, which is required to always stop at the front intermediate position Pn, is prevented, and the operation in the opening direction O is permitted, so that the slide door 1 becomes easier to use.

[0029]

As described above, according to the first aspect of the present invention, the intermediate position detecting means for detecting that the slide door has reached the intermediate position provided between the fully open position and the fully closed position has a failure. When this occurs, it is detected when the slide door is driven from the fully closed position to the fully open position, and the driving of the slide door in the closing direction by the driving means from the next time onward is prohibited.

For this reason, when a failure occurs in the intermediate position detecting means, when the drive speed at the time of closing the slide door is reduced, or when the slide door is closed, the stop position varies based on the drive time. Unlike in the case where a temporary stop is made as would occur, the occupant, especially the operator, is not alerted until the sliding door reaches the fully closed position. Therefore, it is possible to eliminate a mental burden applied to an operator of the slide door after a failure occurs in a switch or the like for detecting a position where the stop is temporarily performed.

In addition, in the invention of claim 2,
When the slide door is driven from a position other than the fully open position and the fully closed position, the abnormal state detecting means does not detect the abnormal state of the intermediate position detecting means. For this reason, for example, when the slide door is stopped at a position passing through the intermediate stop position by manual opening and closing when the ignition is in the off state, when the ignition is turned on and the slide door is driven to open and close, the intermediate position Since the detecting means cannot detect the arrival of the slide door at the intermediate position, a situation in which the abnormal state detecting means erroneously detects the failure of the intermediate position detecting means can be avoided. Therefore, even if the stop position of the slide door changes after the slide door is manually opened / closed, the failure of the intermediate position detection means can be accurately detected.

[0032]

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention.

FIG. 2 is a perspective view showing the inside of a slide door.

FIG. 3 is an exploded perspective view showing a drive mechanism of the slide door.

FIG. 4 is a diagram showing a failure diagnosis of a middle-open limit switch performed each time an operation switch is operated.

FIG. 5 is a side view of a vehicle body showing a conventional technique.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Slide door 11 Medium-open limit switch (intermediate position detection means) 21 Control unit (drive control device) 22 Control circuit (abnormal state detection means, storage means, drive inhibition means) 40 Operation switch 42 Slide door motor (drive means)

Claims (2)

[Claims] 1. A driving means for driving a sliding door in an opening direction and a closing direction is provided, and it is detected that the sliding door has reached an intermediate position provided between a fully open position and a fully closed position. A drive control device provided with an intermediate position detecting means, and when the intermediate position detecting means detects that the slide door has reached the intermediate position, the slide door driven in the closing direction is temporarily stopped and then driven in the closing direction. In the above, when the slide door is driven from the fully closed position to the fully open position, and when the intermediate position detection means detects an abnormal state in which the slide door cannot reach the intermediate position, the abnormal state is detected. State detecting means, storage means for storing that the abnormal state detecting means has detected an abnormal state, and noting that the abnormal state has been detected in the storage means. A drive prohibition unit for prohibiting the drive unit from driving the slide door in the closing direction when the device is memorized. 2. The abnormal position detecting means detects the intermediate position not only when the slide door is driven from a fully closed position to a fully open position but also when the slide door is driven from a fully open position to a fully closed position. 2. The automatic sliding door drive control device according to claim 1, wherein when an abnormal state in which the means cannot reach the intermediate position of the sliding door cannot be detected by the means, the abnormal state is detected.