JP6851855B2 - Electric sliding door control device - Google Patents

Description

The present invention relates to a control device for an electric sliding door.

One-box type and minivan type vehicles have a sliding door that opens and closes by sliding in the front-rear direction on the rear side door, and it is standard depending on the option or grade, and the function to open and close the sliding door by the driving force of the motor , So-called electric sliding door (power sliding door) is equipped.

In an example of the sliding door drive mechanism, a motor is connected to a pulley via an electromagnetic clutch and a speed reducer, and the pulley is rotated by the driving force of the motor to move the belt connected to the sliding door. , The sliding door moves (slides) in the opening and closing directions. In this drive mechanism, the moving speed of the sliding door can be adjusted by controlling the energization of the electromagnetic clutch, and the stopped state of the sliding door can be maintained. If the motor and pulley are separated by an electromagnetic clutch, the sliding door can be manually opened and closed.

Japanese Unexamined Patent Publication No. 2001-152746

By abolishing the electromagnetic clutch and adopting a clutchless configuration, the cost of the drive mechanism can be reduced. However, in the clutchless drive mechanism, the motor and pulley (sliding door) are always connected, so in order to manually open and close the sliding door, set the friction of the motor and the reduction ratio of the reducer low. I have no choice but to do it.

Therefore, in the mode in which the sliding door is manually opened and closed (manual operation mode), the moving speed of the sliding door is increased when the operator exerts a large amount of force or when the weight of the sliding door acts in the operating direction when parking on a slope. May become excessive. If the moving speed of the sliding door becomes excessive, when the sliding door is fully opened or fully closed and stopped, the inertia of the motor overlaps with the inertia of the sliding door, and a large impact due to that inertia causes the belt, reducer and It joins the pulleys and reduces their durability.

An object of the present invention is to provide an electric sliding door control device capable of suppressing the sliding door from reaching the end (fully open state or fully closed state) in the moving direction at an excessive moving speed.

In order to achieve the above object, the electric sliding door control device according to the present invention is a control device for an electric sliding door in which the sliding door can be opened and closed by the driving force of a motor and the sliding door can be opened and closed manually. According to the detection means for detecting that the slide door has moved to the first predetermined position before the end of the slide door in the moving direction when the slide door is manually opened and closed, and the detection by the detection means. A control means for supplying a current to the motor and controlling the motor so that the moving speed of the slide door at the second predetermined position on the terminal side of the first predetermined position becomes the target speed.

According to this configuration, when the sliding door is manually opened and closed, if the sliding door reaches the first predetermined position before the end in the moving direction due to the opening and closing, a current is supplied to the motor thereafter. , The motor is controlled so that the moving speed of the sliding door at the second predetermined position on the terminal side of the first predetermined position becomes the target speed.

Therefore, the slide door can be moved at an arbitrary speed of the operator until the slide door reaches the first predetermined position, and when the slide door reaches the second predetermined position, the moving speed of the slide door is high. Converge to the target speed. This makes it possible for the operator to respond to the desire for quick opening and closing (movement) of the sliding door, while suppressing the sliding door from reaching the end in the moving direction at an excessive moving speed. As a result, when the slide door reaches the end, it is possible to suppress a large impact due to the inertia of the slide door from being applied to the drive mechanism of the slide door, and it is possible to suppress a decrease in the durability of the drive mechanism.

Further, even if a foreign substance is caught between the sliding door and the vehicle body, it is possible to prevent the moving speed of the sliding door from becoming excessive at the time of the pinching, and it is possible to reduce the damage given to the foreign substance. ..

The drive mechanism of the sliding door may have a clutchless configuration in which an electromagnetic clutch is not provided on the power transmission path.

In this case, since the rotation speed of the motor at the time when the slide door reaches the second predetermined position can be reduced, it is possible to suppress a large impact due to the inertia of the motor from being applied to the drive mechanism when the slide door reaches the end. ..

According to the present invention, it is possible to prevent the sliding door from reaching the end in the moving direction at an excessive moving speed while being able to respond to the case where the operator desires to open and close the sliding door quickly. Therefore, when the slide door reaches the end, it is possible to suppress a large impact due to the inertia of the slide door from being applied to the drive mechanism of the slide door, and it is possible to suppress a decrease in the durability of the drive mechanism.

It is a right side view of the vehicle which mounts the electric sliding door control device which concerns on one Embodiment of this invention. It is a block diagram which shows the electrical structure concerning the control of opening and closing operation of a sliding door. It is a flowchart which shows the flow of control at the time of the manual closing operation of a sliding door. It is a figure which shows an example of the change of the door speed at the time of the manual closing operation of a sliding door.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

<Vehicle configuration>
FIG. 1 is a right side view of a vehicle 1 equipped with an electric sliding door control device according to an embodiment of the present invention.

The vehicle 1 is, for example, a minivan type automobile. Although only the right side surface of the vehicle 1 is shown in FIG. 1, a front door opening 2 and a rear door opening 3 are formed on both left and right side surfaces of the vehicle 1, and the front door opening 2 and the rear door opening 3 are formed. A hinge door 4 and a sliding door 5 for opening and closing 3 are provided.

The hinge door 4 opens and closes the front door opening 2 by swinging with the hinge arranged at the front end thereof as a fulcrum. An outdoor handle 6 operated to open and close the hinge door 4 is provided on the outer surface of the hinge door 4.

The sliding door 5 opens and closes the rear door opening 3 by sliding in the front-rear direction, as shown by the alternate long and short dash line and the solid line in FIG. An outdoor handle 7 operated to open and close the slide door 5 is provided on the outer surface of the slide door 5.

Although not shown, door handles (indoor handles) that are operated to open and close the hinge door 4 and the slide door 5 are also provided on the vehicle interior side surfaces of the hinge door 4 and the slide door 5, respectively. In the following description, since it is not necessary to distinguish between the outdoor handle 7 and the indoor handle of the sliding door 5, these are collectively referred to as "door handle 7".

<Electric sliding door>
FIG. 2 is a block diagram showing an electrical configuration relating to control of opening / closing operation of the sliding door 5.

The vehicle 1 is equipped with an ECU (Electronic Control Unit) having a configuration including a microcomputer (microcontroller unit). The microcomputer has, for example, a CPU, ROM and RAM, a data flash (flash memory), and the like. Although FIG. 2 shows only the ECU (sliding door ECU) 11 for controlling the opening / closing operation of the slide door 5, the vehicle 1 is equipped with a plurality of ECUs for controlling each part. .. A plurality of ECUs including the sliding door ECU 11 are connected so as to enable two-way communication by a CAN (Controller Area Network) communication protocol.

An electric slide door (power slide door) is adopted for the slide door 5, and the slide door 5 can be opened and closed electrically as well as manually opened and closed. The slide door 5 is provided with a door slide unit 21 for electrically opening and closing. The door slide unit 21 includes a door motor 22 and a slide mechanism 23.

The slide mechanism 23 includes, for example, a pulley that is rotated by the driving force of the door motor 22 and a belt that travels and moves with the rotation of the pulley, and is a mechanism that slides the slide door 5 in the front-rear direction by the driving force of the door motor 22. .. The slide mechanism 23 employs a so-called clutchless configuration in which an electromagnetic clutch is not provided on the power transmission path thereof.

The door slide unit 21 further includes a door position sensor 24 and a motor current sensor 25.

The door position sensor 24 is provided, for example, in connection with a rotating body (roller or the like) that rotates with the movement of the sliding door 5, and outputs a pulse signal synchronized with the rotation of the rotating body as a detection signal. The detection signal of the door position sensor 24 is input to the sliding door ECU 11. The sliding door ECU 11 acquires the position of the sliding door 5 based on the number of pulse signals input from the door position sensor 24. Further, the slide door ECU 11 acquires the rotation speed (rotation speed) of the rotating body from the detection signal of the door position sensor 24 by calculation, and further, the moving speed of the slide door 5 (hereinafter, “door”) is obtained from the rotation speed of the rotating body. "Speed") is obtained by calculation.

The motor current sensor 25 outputs a detection signal according to the current supplied to the door motor 22. The detection signal of the motor current sensor 25 is input to the sliding door ECU 11. The sliding door ECU 11 acquires the current value flowing through the door motor 22 from the detection signal of the motor current sensor 25.

Further, the sliding door 5 is provided with a door closer unit 31. The door closer unit 31 includes a closer motor 32 and a lock mechanism 33.

The lock mechanism 33 includes a latch and a ratchet rotatably provided on the slide door 5, respectively, and the ratchet engages with the latch while the latch restrains the striker provided on the vehicle body, whereby the slide door 5 is provided. Is a mechanism that holds the ratchet in a fully closed state.

More specifically, when the slide door 5 moves from the fully open state to the closed direction, the striker provided on the vehicle body is accepted in the engaging groove formed in the latch during the movement, and the latch is in the half latch position. Rotates to. As a result, the latch restrains the striker and the ratchet engages with the latch, so that the sliding door 5 is in a so-called half-door state. When the sliding door 5 further moves from the half-door state to the closing direction, the latch rotates from the half-latch position to the full-latch position, and the ratchet and the latch are once disengaged and then re-engaged. By this engagement, the rotation of the latch is restricted, and the slide door 5 is held in the fully closed state.

When the door slide unit 21 moves the slide door 5 in the closing direction (when electrically closed), the drive of the door motor 22 is stopped when the latch rotates to the half-latch position. Then, the closer motor 32 is driven, and the latch is rotated from the half-latch position to the full-latch position by the driving force of the closer motor 32. As the latch rotates from the half-latch position to the full-latch position, the striker moves, and the slide door 5 transitions from the half-door state to the fully closed state.

The door closer unit 31 further includes a half-latch switch 34, a full-latch switch 35, and a ratchet switch 36 for detecting the rotational position of the latch.

The half-latch switch 34 outputs, for example, an off signal when the latch is located at the half-latch position and an on signal when the latch is located at a position other than the half-latch position.

The full latch switch 35 outputs, for example, an off signal when the latch is located at the full latch position and an on signal when the latch is located at a position other than the full latch position.

The ratchet switch 36 outputs, for example, an off signal when the ratchet is engaged with the latch, and outputs an on signal when the ratchet and the latch are disengaged.

The sliding door ECU 11 is located at any position other than the half-latch position, the full-latch position or the half-latch position and the full-latch position based on the signals output from the half-latch switch 34, the full-latch switch 35 and the ratchet switch 36. To get.

Further, an on / off signal of the door handle switch 41 is input to the sliding door ECU 11. The door handle switch 41 is a momentary operation type switch, and outputs an on signal while the user is performing an operation of pulling the door handle 7 (see FIG. 1) toward the front (hereinafter, simply referred to as “operation”). , Outputs an off signal while the operation is not performed.

For example, when the door handle 7 is operated in the fully closed state of the slide door 5, the slide door ECU 11 uses the slide door ECU 11 based on the position and moving speed of the slide door 5, the current value of the current flowing through the door motor 22, and the like. The current supplied to the door motor 22 from the battery mounted on the vehicle 1 is controlled so that the door motor 22 operates. Further, when the door handle 7 is operated with the slide door 5 fully open, the slide door ECU 11 causes the vehicle 1 to close the slide door 5 based on the current value of the current flowing through the door motor 22 or the like. The current supplied from the mounted battery to the door motor 22 is controlled. Further, in order to displace the latch of the lock mechanism 33 from the half latch position to the full latch position, the slide door ECU 11 controls the current supplied from the battery to the closer motor 32.

<Manual closing operation control>
FIG. 3 is a flowchart showing a flow of control when the sliding door 5 is manually closed. FIG. 4 is a diagram showing an example of a change in door speed during the closing operation.

When the ignition switch of the vehicle 1 is on and the slide door 5 is stopped in the fully open state, the fully closed state, or the temporary holding state in the middle of opening and closing, the slide door ECU 11 controls the manual closing operation shown in FIG. Is executed.

In the manual closing operation control, it is determined whether or not the sliding door 5 is manually moved in the closing direction, that is, whether or not the sliding door 5 is manually operated in the closing direction (step S11). When the door handle 7 is operated, an ON signal is output from the door handle switch 41, and the movement of the slide door 5 in the closing direction is detected from the detection signal of the door position sensor 24, the sliding door 5 is moved to the closing direction. It is determined that the manual operation of is performed.

While the sliding door 5 is not manually operated in the closing direction, it is determined at regular intervals whether or not the manual operation has been performed.

When the slide door 5 is manually operated in the closing direction (YES in step S11), the predetermined position A in which the slide door 5 is in the half-door state, in other words, the rotation position of the latch of the lock mechanism 33 is a half latch. It is determined whether or not the predetermined position C on the upstream side in the closing direction from the predetermined position A of the slide door 5 at the time of the position has been reached (step S12).

When the sliding door 5 reaches the predetermined position C, the door speed Vc at the predetermined position C is acquired by calculation from the detection signal of the door position sensor 24 (step S13).

After that, it is determined whether or not the slide door 5 has reached the predetermined position B between the predetermined position A and the predetermined position C (step S14).

When the sliding door 5 reaches the predetermined position B, the door speed Vb at the predetermined position B is acquired by calculation from the detection signal of the door position sensor 24 (step S15).

Then, the target speed, which is the target value of the door speed at the predetermined position A, is Va, the distance between the predetermined position A and the predetermined position B is Db, and the distance between the predetermined position B and the predetermined position C is Dc. , The latch control current value I is set according to the following equation (1) (step S16).

I = α {Vb + (Vb-Vc) * (Db / Dc) -Va} ... (1)
However, α: control current correction coefficient

Depending on the setting of the latch control current value I, the current of the latch control current value I is supplied to the door motor 22 (step S17). By supplying an electric current to the door motor 22, the driving force of the door motor 22 is transmitted to the slide door 5 as a braking force. Therefore, as shown by the solid line in FIG. 4, after the sliding door 5 crosses the predetermined position B toward the predetermined position A, the door speed decreases toward the target speed Va.

When "Vb + (Vb-Vc) * (Db / Dc) -Va" in the equation (1) has a negative value, that is, the amount of change in the door speed between the predetermined position B and the predetermined position C. When the door speed at the predetermined position A predicted from the above is lower than the target speed Va, the current is not supplied to the door motor 22. As a result, it is possible to prevent the movement of the slide door 5 from being assisted by the driving force of the door motor 22.

After that, it is determined whether or not the latch of the lock mechanism 33 is displaced to the half latch position (step S18). For example, when an off signal is output from both the half-latch switch 34 and the ratchet switch 36, it is determined that the latch has been displaced to the half-latch position.

When the latch is displaced to the half-latch position (YES in step S18), the sliding door 5 is in the half-door state, and the supply of current to the door motor 22 is stopped (step S19).

When the supply of the current to the door motor 22 is stopped, the supply of the current to the closer motor 32 is started (step S20: closer operation).

The driving force of the closer motor 32 causes the latch to be displaced from the half-latch position to the full-latch position. After that, it is determined whether or not the latch is displaced to the full latch position (step S21). For example, when an off signal is output from both the full latch switch 35 and the ratchet switch 36, it is determined that the latch has been displaced to the full latch position.

When the latch is displaced to the full latch position (YES in step S21), the slide door 5 is fully closed, the current supply to the closer motor 32 is stopped (step S22: closer stop), and the manual closing operation control is terminated. To.

<Effect>
As described above, when the slide door 5 is manually operated in the closing direction and the slide door 5 reaches the predetermined position B, the current of the latch control current value I is supplied to the door motor 22 thereafter. The door motor 22 is controlled so that the door speed at the predetermined position A on the downstream side in the closing direction from the predetermined position B becomes the target speed Va.

Therefore, the slide door 5 can be moved at an arbitrary speed of the operator until the slide door 5 reaches the predetermined position B, and when the slide door 5 reaches the predetermined position A, the door speed is the target speed. Converges to Va. As a result, it is possible to prevent the slide door 5 from reaching the predetermined position A at an excessive moving speed, while being able to respond to the operator's desire for quick opening and closing (movement) of the slide door 5. As a result, when the slide door 5 exceeds the predetermined position A and reaches the end (full latch position) where the slide door 5 is in the fully closed state, a large impact due to the inertia of the slide door 5 is suppressed from being applied to the slide mechanism 23. It is possible to suppress a decrease in the durability of the slide mechanism 23.

Further, even if a foreign substance is caught between the slide door 5 and the vehicle body, it is possible to prevent the moving speed of the slide door 5 from becoming excessive at the time of the pinching, and to reduce the damage given to the foreign substance. Can be done.

Further, even if the slide mechanism 23 has a clutchless configuration, the rotation speed of the door motor 22 at the time when the slide door 5 reaches the predetermined position A can be reduced, so that the slide door 5 is at the end of the fully closed state. When reaching, it is possible to prevent a large impact due to the inertia of the door motor 22 from being applied to the slide mechanism 23.

<Modification example>
Although one embodiment of the present invention has been described above, the present invention can also be implemented in other embodiments.

For example, in a configuration provided with a main switch for switching between an electric open / close mode in which the slide door 5 opens and closes electrically and a manual open / close mode in which the slide door 5 is manually opened and closed, the manual open / close mode is selected by operating the main switch. If so, the manual closing operation control shown in FIG. 3 may be executed.

Further, not only when the slide door 5 is manually closed, but also when the slide door 5 is manually opened, the same control as the manual closing operation control may be performed.

In the above-described embodiment, the sliding door ECU 11 is configured as one ECU by itself, but the function of the sliding door ECU 11 and the function of another ECU may be incorporated into one ECU.

In addition, various design changes can be made to the above-mentioned configuration within the scope of the matters described in the claims.

5: Sliding door 11: Sliding door ECU (electric sliding door control device, detection means, control means)
22: Door motor (motor)
24: Door position sensor (detection means)

Claims (1)

A control device for an electric sliding door that can open and close the sliding door by the driving force of a motor and can manually open and close the sliding door.
When the sliding door is manually opened and closed, a detecting means for detecting that the sliding door has moved to a first predetermined position before the end of the sliding door in the moving direction, and
Control that supplies a current to the motor in response to detection by the detection means and controls the motor so that the moving speed of the slide door at a second predetermined position on the terminal side of the first predetermined position becomes a target speed. and means only including,
The control means predicts the moving speed of the sliding door at the second predetermined position according to the detection by the detecting means, and when the predicted moving speed is lower than the target speed, the current to the motor is transmitted. Electric sliding door control device that does not supply.

Images