JP2013174077A - Opening/closing body control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing body control device which prevents an opening/closing body from moving rapidly in a manually operable state.SOLUTION: A door opening/closing body 11 comprises: a slide door 2; and a door opening/closing motor M for driving the slide door 2. The door opening/closing body 11 includes: a motor control circuit 63 which controls the door opening/closing motor M by supplying electric power to the door opening/closing motor M when the slide door 2 is driven, and cutting off the electric power supplied to the door opening/closing motor M when the slide door 2 is stopped; and a brake control circuit 64 which brakes the door opening/closing motor M using regenerative electric power generated by operation of the slide door 2 when the electric power to the door opening/closing motor M is cut off by the motor control circuit 63.

Description

  The present invention relates to a control device for an opening / closing body that can be opened / closed electrically, and more particularly, to a control device for a vehicle door that is opened / closed electrically.

  A slide door disposed on a side surface of an automobile is generally guided by a rail provided on a side wall of the vehicle body and can be opened and closed. Many of these sliding doors have been manually opened and closed, but in recent years, the number of sliding doors that are electrically opened and closed is increasing.

  Patent Document 1 includes a motor mechanism unit including a cable arranged in a loop along the side surface of an automobile, a drum that winds or feeds the cable, and a motor that rotates the drum. An apparatus is described in which a cable is wound or sent out to control opening and closing of a sliding door.

  Such a sliding door opening and closing control device enables the motor to rotate even when the power is off, so that the sliding door can be opened and closed even when the motor is power off. Manual opening and closing operations are possible.

  In addition, some hatchback type automobiles in which a flip-up type door is provided at the opening of the rear part of the automobile electrically control the opening and closing of the rear door. Also in this case, when the motor is turned off, the opening and closing body can be manually opened and closed by providing a clutch in the motor mechanism.

JP 2001-193353 A

  The door of an automobile equipped with the opening / closing control device as described above is opened / closed by the control of the motor mechanism section when the power is on, and is manually opened / closed when the power is off.

  As described above, when the motor friction is light when the power is turned off, a strong impact may occur if an excessive force is applied to the door by an excessive manual operation. Further, when the automobile is stopped on a steep slope, there is a possibility that the automobile may move downward due to the weight of the door. Furthermore, even when an object collides in the direction in which the door can move, the door may move in an unintended direction.

  As described above, when the opening / closing body is opened / closed by an external force such as manual operation, if a large force is applied to the opening / closing body, the opening / closing body such as a van closing or the like is strongly applied to the vehicle body when the opening / closing body is moved. An impact may occur, which may cause deformation, damage or failure of the door or the vehicle body. In addition, there is a possibility that pinching may occur with sudden opening and closing of the door, and it is necessary to call attention to injury and damage to objects.

  An object of the present invention is to provide an opening / closing body control device that prevents the opening / closing body from moving suddenly even when the opening / closing body such as a slide door or a hatchback type rear door opens / closes in a manually operable operation state. And

  An opening / closing body control apparatus according to the present invention is an opening / closing body control apparatus including an opening / closing body and a motor that drives the opening / closing body, and includes a motor control unit and a motor brake unit. The motor control means controls the motor by supplying electric power to the motor when the opening / closing body is driven and cutting off the electric power supplied to the motor when the opening / closing body is stopped. The motor brake means brakes the motor using regenerative electric power generated by operating the opening / closing body when electric power to the motor is interrupted by the motor control means.

  Here, the opening / closing body is disposed on an object having an opening, and is movable between a position for closing the opening and a position for opening the opening. For example, a sliding door and a hatchback-type rear door that are slidably arranged with respect to a side opening provided for getting on and off an automobile are taken as an example of an opening / closing body.

  In addition, the regenerative power is power generated when the driving motor rotates reversely and operates in the same manner as the generator.

  The motor control means includes a bridge circuit that supplies and stops power to the motor by operating the switching element, the motor brake means includes a brake control circuit, and the brake control circuit operates the switching element by regenerative power. It is preferable to brake the motor.

  In addition, it is preferable that a storage device for storing regenerative power is provided, and the motor brake means is driven by the power supplied from the storage device.

  Furthermore, it is preferable that the brake control circuit is configured to brake the motor by PWM control.

  In the opening / closing body control device according to the present invention, even if the opening / closing body is moved in an open / closed state in which it can be manually operated, it is possible to prevent the opening / closing body from moving suddenly.

  Further, when the bridge circuit is used, automatic operation and manual operation of the opening / closing body can be easily performed, so that braking of the motor can be easily performed during manual operation.

  When a capacitor is used, it is possible to continuously brake the motor by accumulating regenerative power in the capacitor.

  When the brake control circuit is configured to brake the motor by PWM control, it is possible to perform efficient braking with less power.

FIG. 1 is a schematic configuration diagram illustrating an example of an automobile equipped with an electric sliding door. FIG. 2 is a perspective view showing a mechanism portion that controls opening and closing of the electric slide door of FIG. FIG. 3 is a block diagram illustrating a connection state between the control unit 5 and peripheral devices. FIG. 4 is a circuit diagram including the motor control means 61 and the motor brake means 62. FIG. 5 is a circuit diagram of another embodiment.

(1) Electric sliding door FIG. 1: is a schematic block diagram which shows an example of the motor vehicle carrying an electric sliding door. FIG. 2 is a perspective view showing a mechanism portion that controls opening and closing of the electric slide door of FIG.
As shown in FIG. 1, an opening serving as an entrance is provided on a side surface of a vehicle body 1 of an automobile, and a slide door 2 that is movable in the front-rear direction is attached to the opening.

The upper and lower portions of the front portion of the sliding door 2 are slidably engaged with upper rails (not shown) and lower rails (not shown) provided in the front and rear direction on the upper and lower sides of the vehicle body 1, respectively. A guided portion (not shown) is provided.
In addition, a roller assembly 17 that slidably engages with a center rail 3 provided on a side surface located behind the opening of the vehicle body 1 is provided at an intermediate portion in the vertical direction of the rear portion of the slide door 2.

  With the above structure, the slide door 2 is guided by the upper rail, the lower rail, and the center rail 3, and is between a fully closed position where the opening of the vehicle body 1 is closed and a fully open position where the opening of the vehicle body 1 is opened. It is movable.

(2) Door Open / Close Control Device The vehicle body 1 is provided with a door open / close control device 11 that performs open / close control of the slide door 2. The door opening / closing control device 11 controls the movement of the slide door 2 between the fully closed position and the fully open position.

  The door opening / closing control device 11 includes a mechanism part 4 and a control unit 5. The mechanism portion 4 is a control target of the control unit 5 and is provided around the center rail 3. A control unit 5 is provided below the mechanism portion 4. The control unit 5 includes a main control circuit of the door opening / closing control device 11.

  The mechanism portion 4 is composed of a front pulley assembly 6, a rear pulley assembly 7, a cable drive unit 8, and a cable assembly 9 for connecting them. The mechanism portion 4 is driven by a power supply voltage supplied from the battery 10.

  The slide door 2 is provided with a known door lock 21, a release actuator 12, a closer 15 for driving the door lock 21 and the release actuator 12 via control cables 13 and 14, and the like. Further, when the slide door 2 is in the fully closed position, a junction switch 16 for supplying power to the slide door 2 side is provided on the slide door 2 side and the vehicle body 1 side.

A roller assembly 17 slidably engaged with the center rail 3 is attached to the slide door 2. The roller assembly 17 includes an arm 17a that is swingably attached to the slide door 2, and a pair of rollers 17b that are engaged with the center rail 3 and roll.
A touch sensor 18 for detecting pinching of a hand or the like is disposed on the front edge of the slide door 2.

A driver's seat is arranged in front of the vehicle body 1 (left side in FIG. 1). Around the driver's seat, there are provided a main switch 19 for turning on / off the power of the control unit 5 and an operation switch 20 for intentionally operating the sliding door 2 to open / close and stop.
The main switch 19 and the operation switch 20 are connected to the control unit 5 via a wire harness, and are configured to transmit predetermined signals to the control unit 5, respectively.

  As shown in FIG. 2, the center rail 3 is curved inward of the vehicle body 1 at the front end (lower left direction in FIG. 2), and is formed substantially linearly toward the rear (upper right direction in FIG. 2). Yes. The center rail 3 is formed by bending a metal plate, and the cross-sectional shape thereof is a shape including a groove in which the roller 17b of the roller assembly 17 rolls.

  The front pulley assembly 6 is disposed near the front end of the center rail 3 and is attached to the outer panel of the vehicle body 1. The rear pulley assembly 7 is disposed near the rear end of the center rail 3 and is also attached to the outer panel of the vehicle body 1. A conduit 24 of the front cable assembly 9 extends rearward from the front pulley assembly 6, and its end is connected to the cable drive unit 8. The conduit 25 of the rear cable assembly 9 attached to the rear pulley assembly 7 extends forward, and its end is connected to the cable drive unit 8.

  One inner cable 26 coming out of the cable drive unit 8 is inserted into the front conduit 24 to reach the front pulley assembly 6, where it exits the conduit 24 and turns approximately 120 degrees to change the groove of the center rail 3. Get inside. The inner cable 26 passes through the space above the groove of the center rail 3, and the cable end fixed to the end is locked to the end holder of the roller assembly 17.

  The other inner cable 27 coming out from the cable drive unit 8 is inserted into the rear conduit 25 to reach the rear pulley assembly 7, where it exits from the conduit 25, changes its direction by approximately 180 degrees, Enter the groove from the rear end. The inner cable 27 passes through the space above the groove of the center rail 3, and the cable end fixed to the end is locked to the end holder.

  The cable driving unit 8 includes a base bracket 51, a drum 52 disposed on the lower surface side of the base bracket 51, and a door opening / closing motor M, a reduction gear G, and a clutch 53 disposed on the upper surface side. The base bracket 51 is installed in an appropriate space, for example, on the inner panel that forms the tire house of the vehicle body 1. The drum 52 is for winding and sending out the inner cords 26 and 27, and is usually made of synthetic resin.

  The door opening / closing motor M is an example of a moving unit that moves the slide door 2 between a fully closed position and a fully open position. The door opening / closing motor M is fixed to the housing of the speed reducer G and constitutes a motor / speed reducer assembly together with the speed reducer G.

  When moving the slide door 2, the cable drive unit 8 drives the door opening / closing motor M to wind one of the inner ropes 26, 27 arranged in a closed loop around the drum 52 and send the other. Like that. For example, when the slide door 2 is moved in the direction of the fully closed position, the roller assembly 17 is advanced by rotating the door opening / closing motor M in the direction in which the inner cable 26 is wound around the drum 52 and the inner cable 27 is fed out. Let Further, when the slide door 2 is moved in the fully open position direction, the roller assembly 17 is moved backward by winding the inner cable 27 with the drum 52 and rotationally driving the door opening / closing motor M in the direction in which the inner cable 26 is fed out. .

(3) Control Unit FIG. 3 is a block diagram illustrating a connection state between the control unit 5 and peripheral devices.
The control unit 5 includes a CPU 43 that performs overall control, a memory 44 that stores a control program and various parameters, and an input / output interface (not shown).
Signals from the main switch 19, the operation switch 20, the touch sensor 18 and other various sensors and switches (not shown) are input to the CPU 43 of the control unit 5.

The CPU 43 controls the drive of each unit based on signals input from various sensors and switches, a control program stored in the memory 44, and various parameters.
The control unit 5 supplies power to the door opening / closing motor M when moving the slide door 2, and controls the motor by cutting off the power supplied to the door opening / closing motor M when stopping the sliding door 2. Motor control means 61 is provided. This motor control means 61 is comprised by the circuit for operating the slide door 2, and supplies and interrupts | blocks the power supply with respect to the door opening / closing motor M based on a request signal from CPU43.

  Further, the control unit 5 includes motor brake means 62 for braking the door opening / closing motor M when the sliding door 2 moves while the power to the door opening / closing motor M is interrupted. The motor brake means 62 is connected to the door opening / closing motor M so as to brake the motor using regenerative electric power generated when the door 2 is operated, and the power to the door opening / closing motor M is shut off. Regenerative power generated when the door opening / closing motor M is rotated by an external force is configured to be input.

  The motor control means 61 can be configured as a functional block of the CPU 43. In order to operate the door opening / closing motor M based on a control signal from the CPU 43, a predetermined power supply voltage is supplied from the battery 10 to the door opening / closing motor M. It can be composed of a hardware circuit for supplying to

The motor brake means 62 can be configured as a functional block of the CPU 43, and is a hardware circuit that receives regenerative power from the door opening / closing motor M and supplies a predetermined power supply voltage to the door opening / closing motor M. be able to.
As described above, the door control device 11 is configured by the motor control means 61 and the motor brake means 62.

(4) Circuit Configuration FIG. 4 is a circuit diagram of a circuit including the motor control means 61 and the motor brake means 62 shown in FIG.
Hereinafter, the motor control means 61 includes a bridge circuit 65 that supplies and stops electric power to the motor M by operating a switching element, the motor brake means 62 includes a brake control circuit 64, and a brake control circuit using regenerative power. An embodiment will be described in which 64 applies braking to the motor by operating a switching element.
Two terminals of the door opening / closing motor M are connected to the battery 10 via the bridge circuit 65.

  The bridge circuit 65 includes a first switching element 66 to a fourth switching element 69. A first node 71 between the first switching element 66 and the third switching element 68 and a second node 72 between the second switching element 67 and the fourth switching element 69 are connected to both terminals of the battery 10. The third node 73 between the first switching element 66 and the second switching element 67 is connected to the first terminal of the door opening / closing motor M, and the fourth node between the third switching element 68 and the fourth switching element 69 is connected. A node 74 is connected to the second terminal of the door opening / closing motor M.

  The first switching element 66 to the fourth switching element 69 can use transistors, and other switching elements such as FETs and IPS / IPD (intelligent power switch / device) can be used.

  The motor control circuit 63 selectively performs on / off control of the first switching element 66 to the fourth switching element 69 of the bridge circuit 65 based on the control signal of the CPU 43 and performs drive control of the door opening / closing motor M. For example, when the first switching element 66 and the fourth switching element 69 are turned on and the second switching element 67 and the third switching element 68 are turned off, the door opening / closing motor M rotates in the first direction. In addition, when the first switching element 66 and the fourth switching element 69 are turned off and the second switching element 67 and the third switching element 68 are turned on, the door opening / closing motor M rotates in the second direction.

  The motor control circuit 63 can control the moving speed of the door opening and closing motor M by giving a pulse signal whose pulse width is controlled by PWM control as an ON signal of the switching elements 66 to 69.

  When the door opening / closing motor M includes a pulse signal generation device, the motor control circuit 63 switches the switching element 66 so that the slide door 2 moves to a predetermined position based on the pulse signal from the pulse signal generation device. The time of the ON signal given to -69 is determined.

  When the slide door 2 is in a stopped state, the motor control circuit 63 turns off all of the first switching element 66 to the fourth switching element 69 of the bridge circuit 65. At this time, the power supply voltage applied to the door opening / closing motor M is cut off.

  When the door opening / closing motor M is forcibly rotated by applying external force, regenerative power is generated by electromotive force. For example, when the sliding door 2 is moved manually, when an object collides with the sliding door 2, or when the automobile is parked on a steep slope and the sliding door 2 moves under its own weight, the roller assembly 17 is centered. The rotating shaft of the door opening / closing motor M is forcibly rotated by an external force that slides in the groove of the rail 3 and is transmitted through the inner cables 26 and 27 of the cable assembly 9, the drum 52, the speed reducer G, and the like. . When the rotating shaft is forcibly rotated by the external force transmitted to the door opening / closing motor M in this way, regenerative power is generated by a generator function that converts rotational energy into electrical energy.

Since the power generation amount of the door opening / closing motor M depends on the rotational speed of the rotating shaft, a large regenerative electric power is generated if the sliding door 2 moves rapidly.
The first terminal and the second terminal of the door opening / closing motor M are connected to the bridge circuit 65 and also to the brake control circuit 64. For this reason, the regenerative power generated in the door opening / closing motor M by the transmission of the external force is input to the brake control circuit 64.

  When the regenerative electric power input from the door opening / closing motor M exceeds a predetermined value, the brake control circuit 64 determines that the slide door 2 has moved suddenly, and the first switching element 66 to the fourth switching of the bridge circuit 65. The element 69 is selectively turned on / off to short-circuit the first terminal and the second terminal of the door opening / closing motor M.

  In the example described in FIG. 4, the brake control circuit 64 is connected to the first switching element 66 and the third switching element 68, and the first switching element 66 and the first switching element 66 according to the regenerative power from the door opening / closing motor M. 3 The switching element 68 is turned on. As a result, the third node 73 and the fourth node 74 of the bridge circuit 65 are short-circuited. In response to this, the first terminal and the second terminal of the door opening / closing motor M are also short-circuited, and the door opening / closing motor M is braked.

  From this, when the slide door 2 moves abruptly, the brake control circuit 64 brakes the door opening / closing motor M based on the regenerative power of the door opening / closing motor M, and the impact due to the sudden opening / closing of the sliding door 2 is applied. Can be relaxed.

The brake control circuit 64 can be configured only by a hardware circuit, and operates using the regenerative power generated by the door opening / closing motor M. Therefore, the brake control circuit 64 is effective even when disconnected from the battery 10. Function.
The brake control circuit 64 is connected to the second switching element 67 and the fourth switching element 69, and can be configured to turn on the second switching element 67 and the fourth switching element 69 in accordance with the regenerative power.

(5) Effects of Embodiment The door opening / closing control device 11 (an example of a door opening / closing control device) includes a slide door 2 (an example of an opening / closing body), and a door opening / closing motor M (an example of a motor) that drives the sliding door 2. It has. The door opening / closing control device 11 controls the door opening / closing motor M by supplying power to the door opening / closing motor M when the slide door 2 is driven and cutting off the power supplied to the door opening / closing motor M when the sliding door 2 is stopped. When the motor control circuit 63 (an example of motor control means) and the motor control circuit 63 cut off the power to the door opening / closing motor M, the door opening / closing is performed using regenerative power generated by operating the slide door 2. And a brake control circuit 64 (an example of a motor brake means) for braking the motor M.

As described above, in the opening / closing body control apparatus according to this embodiment, the slide door 2 moves suddenly in a state where no power is applied to the door opening / closing motor M for driving the sliding door 2 that is the opening / closing body. However, braking can be applied by the brake control circuit 64 in accordance with the regenerative power. The brake control circuit 64 uses the regenerative electric power generated by the door opening / closing motor M to perform a braking operation, so that power consumption is low and the braking operation can be performed even when disconnected from the battery 10.
In addition, since the door open / close motor M for driving the slide door 2 can be used to brake the sudden movement of the slide door 2, the number of parts can be reduced.

(6) Other embodiment A
With reference to FIG. 5, an embodiment will be described in which a battery that stores regenerative power is provided and the motor brake means is driven by the power supplied from the battery. FIG. 5 is a circuit diagram according to another embodiment.
The circuit diagram shown in FIG. 5 is substantially the same as the circuit diagram shown in FIG. 4, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.
In the example of FIG. 5, a capacitor 81 for accumulating regenerative power input from the door opening / closing motor M to the brake control circuit 64 is provided.

  When the door opening / closing motor M generates regenerative power, the regenerative power is stored in the capacitor 81. When the capacity stored in the storage device 81 reaches a predetermined amount, the brake control circuit 64 selectively turns on the first switching element 66 to the fourth switching element 69 of the bridge circuit 65 to turn on the door opening / closing motor M. Short 1 terminal and 2nd terminal. At this time, the brake control circuit 64 continuously turns on the first switching element 66 and the third switching element 68 by the capacity accumulated in the battery 81. As a result, the door opening and closing motor M is continuously braked for a predetermined time. The capacitor 81 may be any capacitor as long as it can store regenerative electric power by opening and closing the door and supply electric power to the motor brake means to brake the movement of the door, and a capacitor or the like can be used.

(7) Other embodiment B
An embodiment using PWM control will be described as a motor braking system using a brake control circuit. For example, in the circuit diagram of FIG. 4 or 5, the brake control circuit 64 can provide a pulse signal whose pulse width is controlled by PWM control as an ON signal of the first switching element 66 and the third switching element 68.
In this case, the movement of the sliding door 2 is determined by determining the pulse width of the ON signal applied to the first switching element 66 and the third switching element 68 according to the magnitude of the regenerative power generated by the door opening / closing motor M. Appropriate braking can be performed according to the speed.
Further, by narrowing the pulse width of the ON signal with respect to the switching element of the bridge circuit 65, it is possible to perform efficient braking with less power.

(8) Other embodiment C
A hatchback-type rear door will be described as an opening / closing body that is opened and closed by a motor drive. Even in this case, when the rear door is suddenly moved by an external force after the power supply to the motor is turned off, there are problems such as damage to parts due to the impact or failure, and injury by collision with the human body. .
The structure of the opening / closing body control device as described above can also be applied to such a hatchback type rear door.

  The present invention can be widely applied to an opening / closing body control device that opens and closes a door electrically.

DESCRIPTION OF SYMBOLS 1 Car body 2 Sliding door 3 Center rail 4 Mechanism part 5 Control part 11 Door opening / closing control apparatus 61 Motor control means 62 Motor brake means 63 Motor control circuit 64 Brake control circuit 65 Bridge circuit 66 1st switching element 67 2nd switching element 68 1st 3 switching element 69 4th switching element M Door opening and closing motor

Claims (4)

An opening / closing body control device comprising an opening / closing body and a motor for driving the opening / closing body,
Motor control means for controlling the motor by supplying electric power to the motor when the open / close body is driven and cutting off the electric power supplied to the motor when the open / close body is stopped;
An opening / closing body control device comprising: motor brake means for braking the motor using regenerative electric power generated by operating the opening / closing body when power to the motor is interrupted by the motor control means .   The motor control means includes a bridge circuit that supplies and stops power to the motor by operating a switching element, the motor brake means includes a brake control circuit, and the regenerative power causes the brake control circuit to The opening / closing body control device according to claim 1, wherein the motor is braked by operating a switching element.   The opening / closing body control device according to claim 1, further comprising a capacitor that stores the regenerative power, wherein the motor brake unit is driven by the power supplied from the capacitor.   4. The opening / closing body control device according to claim 2, wherein the brake control circuit applies braking to the motor by PWM control.

Images