JP2012154029A - Opening-closing body driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening-closing body driving device of which a structure can be simplified.SOLUTION: A rear sunshade ECU starts motor control in a manner of performing opening operation of the rear sunshade regardless of whether the rear sunshade is in a full-open or full-closed position, when a start is directed regarding the opening/closing operation of the rear sunshade. Accompanied by the start of the control, the rear sunshade ECU starts motor control in a manner of performing closing operation when a locked state is detected as the opening operation does not satisfy the full stroke time T1.

Description

  The present invention relates to an opening / closing body drive device that opens and closes an opening / closing body using a driving force generated by an electrical drive source.

  As this type of device, Patent Document 1 discloses a rear sunshade device that opens and closes a rear sunshade that covers a rear window of a vehicle from the indoor side and blocks sunlight. In the device described in this document, when the rear sunshade is driven by a motor and the rear sunshade reaches a fully open position or a fully closed position, this is detected by a limit switch and the drive of the motor is stopped.

JP-A-6-193368 ([0001], [0012], [0040], [0043], [FIG. 5])

  However, since the limit switch is required in the one described in Patent Document 1, there is a room for improvement in terms of cost, such as a large number of parts and troublesome assembly, and an increase in the size of the apparatus. Invite.

  The present invention has been made paying attention to such problems, and an object thereof is to provide an opening / closing body driving device capable of simplifying the structure.

  In order to achieve the above object, an invention according to claim 1 is directed to an opening / closing body driving device for opening / closing an opening / closing body using a driving force of an electric drive source. When instructed, control of the drive source is started in a mode in which one of the opening and closing operations of the opening and closing body is performed regardless of whether the opening and closing body is in the fully open position or the fully closed position. Control means, and defining the required time for opening operation of the opening and closing body as a reference required time for opening operation, and defining the required time for closing operation of the opening and closing body as a reference required time for closing operation, When a lock current indicating that the fully open position or the fully closed position has reached the drive source flows, the drive source further includes lock detection means for detecting a lock state of the drive source, and the control means starts the control. With that, When the locked state is detected by the lock detecting means while the one operation does not satisfy the reference required time corresponding to this operation, the drive source is controlled in such a manner that the other operation is performed with respect to the one operation. The gist is to start.

  According to the same configuration, when an opening operation is performed from the fully closed position in response to an operation start instruction, for example, when the reference required time for the opening operation has elapsed, the fully opened position is reached and the locked state is detected. On the other hand, when the opening operation is performed from the fully opened position, the locked state is detected before the reference required time for the opening operation elapses. In this case, the opening operation is stopped and the closing operation is started. Thereafter, when the reference required time for the closing operation elapses, the fully closed position is reached, and the locked state is detected.

  When a closing operation is performed from the fully open position in response to an instruction to start the operation, the fully closed position is reached when the reference required time for the closing operation has elapsed, and the locked state is detected. On the other hand, when the closing operation is performed from the fully closed position, the lock state is detected before the reference required time for the closing operation elapses. In this case, the closing operation is stopped and the opening operation is started. Thereafter, when the reference required time for the opening operation has elapsed, the fully opened position is reached, and the locked state is detected.

  In any case, by monitoring the current flowing through the drive source without using a limit switch, it is possible to detect the locked state at the fully open position and the fully closed position, and thus recognize the open / close position of the open / close body. It becomes. Therefore, the structure can be simplified.

  Whatever method is used to detect that the opening / closing body has reached the final position in the first operation after power-on, the stored contents of a volatile memory such as RAM are used in the second and subsequent operations. The opening / closing position can be recognized with reference to FIG. Thus, it is not always necessary to use a nonvolatile memory such as an EEPROM, which is advantageous in terms of cost.

  According to a second aspect of the present invention, in the opening / closing body driving device according to the first aspect, the one of the operations corresponds to this operation in accordance with the control first started in response to the instruction. When the locked state is detected by the lock detection means without satisfying the reference required time, the final arrival position by performing the one operation is recognized as the current opening / closing position, and the other operation is performed. The gist thereof is to start the control of the driving source in the above.

  According to this configuration, for example, when the opening operation is performed from the fully opened position, the lock state is detected before the reference required time for the opening operation elapses. The position is recognized as the current opening / closing position, and the closing operation is started. On the other hand, when the closing operation is performed from the fully closed position, the locked state is detected before the reference required time for the closing operation elapses. In this case, the final arrival position of the closing operation, that is, the fully closed position is It is recognized as the current opening / closing position, and the opening operation is started.

  As described above, the opening / closing operation is performed in a manner that reflects the current opening / closing position. Therefore, appropriate control can be performed in response to the operation start instruction.

Since this invention is comprised as mentioned above, there exist the following effects.
According to the present invention, the structure can be simplified.

The electric block circuit diagram which shows the rear sunshade apparatus of the structure by this embodiment. Regarding the operation of the rear sunshade device configured according to the present embodiment, (a) is a time chart illustrating the operation when the opening operation is started from the fully closed position, and (b) is the opening operation starting from the fully opened position. The time chart explaining operation | movement when being performed.

Hereinafter, an embodiment in which the opening / closing body driving device according to the present invention is embodied in a rear sunshade device will be described.
As shown in FIG. 1, the rear sunshade device 1 includes a front side switch installed at a place where it can be operated while seated in a driver's seat and a rear side switch installed at a place where it can be operated while seated on a rear seat. When the rear sunshade switch 2, which is a generic name, is operated, the rear sunshade that is an opening / closing body is opened and closed. The rear sunshade switch 2 is electrically connected to a rear sunshade electronic control unit (hereinafter referred to as a rear sunshade ECU) 3. In the present embodiment, the rear sunshade switch 2 is configured such that the first fixed contact is grounded, the second fixed contact is connected to the rear sunshade ECU 3, and the movable contact is both fixed contacts as the operation knob is operated. Although it consists of a contact type switch which electrically connects between them, a non-contact type switch may be used.

  The rear sunshade ECU 3 is operated when the rear sunshade switch 2 is manually operated by a vehicle occupant and the potential of the second fixed contact of the rear sunshade switch 2 becomes low level. Recognize that At this time, the rear sunshade ECU 3 controls the sunshade drive motor 4 that is an electrical drive source, thereby opening and closing the rear sunshade using the drive force of the motor 4. The motor 4 is a DC motor capable of forward and reverse rotation, and the rotational driving force thereby is transmitted to the rear sunshade through a speed reduction mechanism or the like, so that the rear sunshade moves the rear window from the indoor side. The opening / closing operation is performed over a fully closed position that covers and a fully open position that does not cover the rear window.

Next, the operation of the rear sunshade device 1 will be described.
First, with reference to FIG. 2A, the operation when the opening operation is started from the fully closed position will be described.

  In this case, when the rear sunshade switch 2 is operated at the point P1 in a state where the power is supplied to the rear sunshade ECU 3 in accordance with the power state of the vehicle being changed to the ignition ON through the operation of the power switch, The sunshade ECU 3 starts the opening operation by rotating the motor 4 forward.

  Then, after the full stroke time T1, which is the reference required time for the opening operation, has elapsed, the fully open position is reached. At this time, a lock current flows through the motor 4, and the rear sunshade ECU 3 at the point P2 where this state continues for a certain time or more. The locked state of the motor 4 is detected. The rear sunshade ECU 3 detects the locked state of the motor 4 on condition that the state where the current flowing through the motor 4 is higher than the threshold value continues for the predetermined time or more.

  In this case, the rear sunshade ECU 3 detects that the lock state has been detected after the full stroke time T1 has elapsed since the start of the opening operation, and the detection of the lock state is due to the rear sunshade reaching the fully open position. That is, the fully open position is recognized as the current open / close position, and the forward rotation of the motor 4 is stopped. As a result, the opening operation is stopped at the point P3.

Next, the operation when the opening operation is started from the fully opened position will be described with reference to FIG.
In this case, when the rear sunshade switch 2 is operated at the point P4 in the state where the power is turned on to the rear sunshade ECU 3 in accordance with the power state of the vehicle being changed to the ignition ON through the operation of the power switch, The sunshade ECU 3 starts the opening operation by rotating the motor 4 forward.

  Thereafter, a lock current flows through the motor 4 before the full stroke time T1, which is the reference required time for the opening operation, and the rear sunshade ECU 3 is in a locked state of the motor 4 at a point P5 where this state continues for a predetermined time or more. Is detected.

  In this case, based on the fact that the rear sunshade ECU 3 detects the locked state before the full stroke time T1 has elapsed since the opening operation was started, the detection of the locked state was that the rear sunshade was originally in the fully open position. That is, the fully open position is recognized as the current open / close position, and the forward rotation of the motor 4 is stopped. As a result, the opening operation is stopped at the point P6.

Thereafter, the rear sunshade ECU 3 starts the closing operation by rotating the motor 4 in the reverse direction at the point P7.
Then, after the full stroke time T2, which is the reference required time for the closing operation, has passed, the fully closed position is reached. At this time, a lock current flows through the motor 4, and the rear sunshade ECU 3 at a point P8 where this state continues for a certain time or more. Detects the locked state of the motor 4.

  In this case, the rear sunshade ECU 3 detects that the lock state has been detected after the full stroke time T2 has elapsed since the start of the closing operation, and the detection of the lock state is due to the rear sunshade reaching the fully closed position. That is, that is, the fully closed position is recognized as the current opening / closing position, and the reverse rotation of the motor 4 is stopped. As a result, the closing operation is stopped at the point P9.

  As described above, when the first operation after power-on is instructed to start by operating the rear sunshade switch 2, the opening operation is initially performed, and then the closing operation is performed as necessary. The current opening / closing position is recognized by the rear sunshade ECU 3 through the first operation. The rear sunshade ECU 3 stores the current opening / closing position in a volatile memory typified by a RAM so that the stored contents of the RAM can be used for subsequent control over a period until the power is turned off. To reflect.

  That is, when the rear sunshade ECU 3 is instructed to start the second and subsequent operations after the power is turned on, the rear sunshade ECU 3 recognizes the current open / close position with reference to the stored contents of the RAM, and the open / close position is the fully open position. In this case, the closing operation is started by rotating the motor 4 in the reverse direction. On the other hand, when the current open / close position is the fully closed position, the rear sunshade ECU 3 starts the opening operation by rotating the motor 4 forward. In this way, in the second and subsequent operations after the power is turned on, the opening / closing operation from one final arrival position recognized through the previous operation to the other final arrival position is immediately performed.

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) By monitoring the current flowing through the motor 4 without using a limit switch, it is possible to detect the locked state at the fully open position and the fully closed position. As a result, the rear sunshade It is possible to recognize the open / close position. Therefore, the structure can be simplified.

  (2) Whatever method is used to detect that the rear sunshade has reached the final position for the first operation after the power is turned on, in the second and subsequent operations, a volatile memory such as a RAM is stored. It becomes possible to recognize the opening / closing position by referring to the contents. Thus, it is not always necessary to use a nonvolatile memory such as an EEPROM, which is advantageous in terms of cost.

  (3) When the opening operation is performed from the fully opened position, the locked state is detected before the full stroke time T1 elapses. In this case, the final reaching position of the opening operation, that is, the fully opened position is the current open / closed state. The position is recognized and the closing operation is started. In this way, the opening / closing operation is performed in a manner that reflects the current opening / closing position. Therefore, appropriate control can be performed in response to the operation start instruction.

(4) Since the opening operation is initially performed in response to the operation start instruction, it is possible to avoid the pinching by the rear sunshade.
(5) The current opening / closing position recognized through the first operation after power-on can be reflected in the subsequent control.

  (6) In the second and subsequent operations after the power is turned on, an opening / closing operation from one final arrival position recognized through the previous operation to the other final arrival position can be immediately performed. .

  (7) Instead of using a limit switch, if a non-volatile memory such as an EEPROM is provided and the opening / closing position of the rear sunshade is stored in the memory, the power is turned off and then turned on again Thus, the open / closed position before the power interruption can be reflected in the subsequent control. However, in this case, since a part such as an EEPROM is required, it is disadvantageous in terms of cost as in the case of using a limit switch.

  In this regard, when the configuration according to the present embodiment is adopted, the start of the closing operation is delayed only at the first operation after the power is turned on and the operation is started from the fully opened position, but the RAM value is referred to in the second and subsequent operations. Since the opening / closing position can be recognized, there is no delay, and the use of RAM is advantageous in terms of cost.

  In addition, when setting the delay time, such as increasing the detection sensitivity of the locked state, the user experience is improved and the convenience can be improved by devising such that the user does not feel uncomfortable.

In addition, the said embodiment can also be changed and actualized as follows.
A configuration in which an initial closing operation is performed instead of a configuration in which an initial opening operation is performed when a start instruction is given for an initial operation after power-on may be employed. In this case, when the closing operation is performed from the fully opened position in response to the operation start instruction, the fully closed position is reached when the reference required time for the closing operation has elapsed, and the locked state is detected. On the other hand, when the closing operation is performed from the fully closed position, the lock state is detected before the reference required time for the closing operation elapses. In this case, the closing operation is stopped and the opening operation is started. Thereafter, when the reference required time for the opening operation has elapsed, the fully opened position is reached, and the locked state is detected.

  The “threshold value” and “predetermined time” used for detecting the lock state may be appropriately set in consideration of detection sensitivity. For example, if the “certain time” is short, the lock state can be detected at an early stage, while if the “certain time” is long, the verification as to whether or not the lock state has been reached takes a long time. Detection accuracy can be improved.

  -It is desirable to set the full stroke time T1 and the full stroke time T2 in consideration of sliding resistance and changes with time associated with the opening / closing operation of the rear sunshade. Good. In this case, the present invention is embodied as an opening / closing body drive device including setting means for setting the reference required time for the opening operation and the reference required time for the closing operation.

The electrical drive source is not limited to a motor, and may be, for example, a solenoid.
The opening / closing body driving device according to the present invention is not limited to the rear sunshade device, but the opening / closing body is opened / closed between the fully open position and the fully closed position, such as a power window device, a power slide door device, and an electric door mirror device. Further, the present invention may be applied to sunroof devices, moon roof devices, automatic door devices, electric shutter devices, electric blind devices, and the like.

Next, a technical idea that can be grasped from the above embodiment and another example will be described.
(A) In an opening / closing body drive device that opens and closes an opening / closing body using a driving force generated by an electrical drive source, when the opening / closing operation of the opening / closing body is instructed to start, the opening / closing body is fully opened and fully closed. Control means for starting control of the drive source in a mode in which the opening / closing body is opened regardless of the position, and the time required for opening the opening / closing body is determined as a reference required for opening operation. A time required for the closing operation of the opening / closing body is defined as a reference required time for the closing operation, and a lock current indicating that the opening / closing body has reached the fully open position or the fully closed position is applied to the drive source. The control means further includes a lock detection means for detecting a lock state of the drive source when the flow has started, and the opening of the opening / closing body satisfies a reference required time for the opening action when the control is started. Without the lock When the lock state is detected by the detection means, the opening and closing body driving apparatus characterized by starting the control of the drive source in a manner closing operation of the opening-and-closing member is carried out. According to this configuration, an opening operation is initially performed in response to an operation start instruction, so that pinching by the opening / closing body can be avoided.

  (B) The control means starts control of the drive source in a mode in which the opening / closing body is opened when an instruction to start the first operation after power-on is given. Accordingly, when the lock detecting means detects the locked state after the reference opening time has elapsed for the opening operation of the opening / closing body, the fully open position is recognized as the current opening / closing position, while accompanying the started control. When the lock detecting means detects the lock state while the opening operation of the opening / closing body does not satisfy the reference required time, the opening / closing body is closed after recognizing the fully opened position as the current opening / closing position. In this mode, the control of the drive source is started, and with this started control, the lock detection means detects the lock state after the closing operation of the opening / closing body has passed the reference required time. Can, closing body driving apparatus according to (a) recognize the fully closed position as the current open and closed positions. According to this configuration, the current opening / closing position recognized through the first operation after power-on can be reflected in the subsequent control.

  (C) When the control means is instructed to start the second and subsequent operations after power-on, the control means refers to the open / close position recognized as the current open / close position and determines the open / close position as one of the final positions. The opening / closing body drive device according to (b), wherein when the opening position is defined, the control of the drive source is started in such a manner that the opening / closing body reaches the other final arrival position with respect to the one final arrival position. According to this configuration, in the second and subsequent operations after the power is turned on, the opening / closing operation from one final arrival position recognized through the previous operation to the other final arrival position can be immediately performed. become.

  DESCRIPTION OF SYMBOLS 1 ... Rear sunshade apparatus (opening-closing body drive device), 2 ... Rear sunshade switch, 3 ... Rear sunshade ECU (control means, lock | rock detection means), 4 ... Motor (electric drive source).

Claims (2)

In the opening / closing body driving device for opening / closing the opening / closing body using a driving force by an electrical drive source,
When an instruction to start the opening / closing operation of the opening / closing body is given, one of the opening / closing operation of the opening / closing body is performed regardless of whether the opening / closing body is in the fully open position or the fully closed position. Control means for starting control of the drive source of
The required time for the opening operation of the opening / closing body is defined as the reference required time for the opening operation, and the required time for the closing operation of the opening / closing body is defined as the reference required time for the closing operation,
A lock detecting means for detecting a lock state of the drive source when a lock current indicating that the open / close body has reached the fully open position or the fully closed position flows to the drive source;
When the control unit detects the locked state by the lock detection unit while the one operation does not satisfy the reference required time corresponding to the operation, the control unit performs the operation for the one operation. Control of the said drive source in the aspect in which the other operation | movement is performed is started. The opening-closing body drive device characterized by the above-mentioned. The control means, when the lock state is detected by the lock detection means while the one operation does not satisfy the reference required time corresponding to this operation, with the control first started after receiving the instruction, 2. The opening / closing body drive device according to claim 1, wherein a final arrival position by performing the one operation is recognized as a current opening / closing position, and control of the drive source in a mode in which the other operation is performed is started.

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