JP2005153859A - Controller of driving motor for sunroof device, sunroof device, and control method of driving motor for sunroof device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a controller of a driving motor for a sunroof device capable of optimizing a tightly closing force or pinching load of an opening/closing body at a closing operation even when a travelling speed of a vehicle varies, a sunroof device, and a control method of the driving motor for the sunroof device. <P>SOLUTION: A switching relay 14 is controlled by an ECU 10 so that the rotation torque of the driving motor 5 relatively becomes larger in the case where the travelling speed of a vehicle is in a low-speed region than in the case where it is in a high-speed region at a tilt closing operation of roof glass. In other words, when the travelling speed of the vehicle is in the low-speed region, the switching relay 14 is controlled by the ECU 10, and a movable terminal 14d is connected to a contact 14c connected to a battery via a resistance 15. When the travelling speed of the vehicle is in the high-speed region, the switching relay 14 is controlled by the ECU 10, and the movable terminal 14d is connected to a contact 14b directly connected to the battery. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a control device for a sunroof device drive motor that controls a drive motor for opening and closing an opening / closing body such as a roof glass of an automobile, a sunroof device, and a control method for a drive motor for a sunroof device. .

2. Description of the Related Art Conventionally, there is a drive motor control device for opening and closing an opening / closing body such as a roof glass of an automobile, for example, having a configuration disclosed in Patent Document 1. An open / close control device for an open / close body disclosed in Patent Document 1 is an open relay that supplies a drive current to rotate a motor in an opening direction of the open / close body, and rotates the motor in a closing direction of the open / close body. Thus, a control circuit provided with a closing relay for supplying a drive current is provided. A resistor is interposed between the closing relay and a battery that supplies a driving current for driving the motor. In other words, by providing a resistor between the closing relay and the battery, the drive current supplied to the motor is made smaller during the closing operation of the opening / closing body than during the opening operation of the opening / closing body. The operation speed is set to be lower during the closing operation than during the opening operation. As a result, the load when the foreign object is caught by the opening / closing body (the opening formed in the roof panel of the vehicle and the opening / closing body arranged with respect to the opening is applied to the foreign object when the foreign object is caught) (Load) can be kept small.
Japanese Utility Model Publication No. 5-41922

By the way, the opening / closing control device for the opening / closing body disclosed in Patent Document 1 slides the opening / closing body to the vehicle rear side.
On the other hand, in a sunroof device in which the opening / closing body is tilted, a negative pressure is generated above the tilted opening / closing body and a vortex is generated on the rear end side of the opening / closing body when the vehicle is running. The open / close body receives a force that is pulled upward (pushed up). This force increases as the traveling speed of the vehicle increases. Therefore, when the closing operation speed of the opening / closing body is set to a constant speed (constant torque) as in Patent Document 1, if the operation speed (rotational speed of the motor) is set on the basis of the high speed running, the jamming at the low speed running is performed. If the load becomes large and the operating speed (rotational speed of the motor) is set based on the time of low speed travel, there arises a problem that the closing force at the time of high speed travel is insufficient.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sunroof capable of suitably applying the closing force or the pinching load of the opening / closing body during the closing operation even when the traveling speed of the vehicle changes. An object of the present invention is to provide a device drive motor control device, a sunroof device, and a sunroof device drive motor control method.

  In order to solve the above-mentioned problems, an invention according to claim 1 is a control device for a drive motor for a sunroof device that opens and closes an opening / closing body that performs a tilt opening / closing operation with respect to an opening formed in a roof panel of a vehicle. A drive unit that supplies drive power to the drive motor to rotate the drive motor, and a control unit that controls the drive unit to control the rotation drive of the drive motor. A rotation torque switching means for switching the rotation torque, wherein the control unit is configured such that when the opening / closing body is tilt-closed, the rotation torque of the drive motor is relatively less than that at a low speed as the traveling speed of the vehicle increases. The rotational torque switching means is controlled so as to increase.

  According to a second aspect of the present invention, in the control device for the drive motor for the sunroof device according to the first aspect, the traveling speed region of the vehicle is divided into a plurality of speed regions, and the control unit is configured to During the tilt closing operation, the rotational torque switching means is controlled so that the rotational torque of the drive motor gradually increases as compared with the low speed when the speed region becomes the high speed region.

  According to a third aspect of the present invention, in the control device for a sunroof drive motor according to the second aspect, the vehicle traveling speed region is divided into two speed regions, a low speed region and a high speed region, and the control is performed. The control unit controls the rotational torque switching means so that the rotational torque of the drive motor in the high speed region is relatively larger than the rotational torque of the drive motor in the low speed region during the tilt closing operation of the opening / closing body. To do.

  According to a fourth aspect of the present invention, in the control device for the sunroof drive motor according to any one of the first to third aspects, foreign matter is caught between the opening and the opening / closing body. A pinching control means for controlling the drive motor so that the foreign matter is releasable when it is determined whether or not the foreign matter is caught based on a threshold value for judging that the foreign matter has been caught. In accordance with the control of the rotational torque switching means by the control unit, the threshold value changing means is provided for changing the threshold value so that the pinching load by the opening / closing body is stabilized.

  According to a fifth aspect of the present invention, there is provided a drive motor that opens and closes an opening / closing body that performs a tilt opening / closing operation on an opening formed in a roof panel of a vehicle, and a drive power supply is supplied to the drive motor to rotate the drive motor. A sunroof apparatus comprising: a drive unit; and a control unit that controls the drive motor by controlling the drive unit to control the rotational drive of the drive motor, wherein the drive unit is configured to control the drive motor. A rotation torque switching means for switching the rotation torque, wherein the control unit is configured such that when the opening / closing body is tilt-closed, the rotation torque of the drive motor is relatively less than that at a low speed as the traveling speed of the vehicle increases. The rotational torque switching means is controlled so as to increase.

  According to a sixth aspect of the present invention, in the sunroof device according to the fifth aspect, the traveling speed region of the vehicle is divided into a plurality of speed regions, and the controller is configured to perform the tilt closing operation of the opening / closing body. The rotational torque switching means is controlled so that the rotational torque of the drive motor becomes relatively larger than that at the low speed stepwise as the speed region becomes a high speed region.

  According to a seventh aspect of the present invention, in the sunroof device according to the sixth aspect of the invention, the traveling speed region of the vehicle is divided into two speed regions, a low speed region and a high speed region, and the control unit includes the opening / closing body. During the tilt closing operation, the rotational torque switching means is controlled so that the rotational torque of the drive motor in the high speed region is relatively larger than the rotational torque of the drive motor in the low speed region.

  According to an eighth aspect of the present invention, there is provided the sunroof device according to any one of the fifth to seventh aspects, wherein it is determined that a foreign object is caught between the opening and the opening / closing body. It is determined whether or not a foreign object is caught based on a threshold value, and when it is determined that the foreign object has been caught, a pinching control unit is provided for controlling the drive motor so that the foreign substance can be released. Corresponding to the control of the rotational torque switching means by the unit, there is provided threshold value changing means for changing the threshold value so that the sandwiching load by the opening and closing body is stabilized.

  According to a ninth aspect of the present invention, in the method for controlling a driving motor for a sunroof device that opens and closes an opening / closing body that performs a tilt opening / closing operation on an opening formed in a roof panel of a vehicle, the tilt closing operation of the opening / closing body is performed. Sometimes, control is performed such that the rotational torque of the drive motor becomes relatively larger than that at low speed as the traveling speed of the vehicle increases.

(Function)
According to the first, fifth, and ninth aspects of the invention, during the tilt closing operation of the opening / closing body, the rotational torque of the drive motor that drives the opening / closing body as the vehicle travel speed increases is relatively higher than when the opening / closing body is low speed. Controlled to increase. In general, during traveling, a negative pressure is generated above the tilted open / close body, and a vortex is generated on the rear end side of the open / close body, so that the open / close body is pulled upward (pushed up). ), And this force increases as the traveling speed of the vehicle increases. As a result, the force received by the opening / closing body during the tilt closing operation of the opening / closing body increases as the traveling speed of the vehicle increases. Therefore, in the present invention, the rotational torque of the drive motor becomes relatively larger than that at low speed as the traveling speed increases, so that the closing force of the opening / closing body and the pinching load are suitable even if the traveling speed of the vehicle changes. It becomes.

  According to the second and sixth aspects of the present invention, the rotational speed of the drive motor can be controlled stepwise by dividing the traveling speed region of the vehicle into a plurality of speed regions during the tilt closing operation of the opening / closing body. . Therefore, it is possible to easily switch the rotational torque of the drive motor, which is performed to make the closing force and the pinching load suitable.

  According to the third and seventh aspects of the invention, during the tilt closing operation of the opening / closing body, the running speed region of the vehicle is divided into two speed regions, a low speed region and a high speed region, so that the rotational torque of the drive motor is also reduced. Control is possible in two stages. Therefore, it is possible to more easily switch the rotational torque of the drive motor, which is performed in order to make the closing force and the pinching load suitable.

  According to the fourth and eighth aspects of the present invention, the threshold value for determining the presence or absence of foreign matter is set such that the pinching load is stabilized in accordance with the control of the rotational torque switching means by the control unit. It is changed by the value changing means. Therefore, since the threshold value for determining whether or not foreign matter is caught is changed in accordance with the change in the rotational torque as well as the rotational torque of the drive motor, the jamming is performed even if the vehicle traveling speed changes. The load can be made more stable.

  ADVANTAGE OF THE INVENTION According to this invention, even if the driving speed of a vehicle changes, the control apparatus of the drive motor for sunroof apparatuses, a sunroof apparatus, and a sunroof which can make the closing force and pinching load of an opening-closing body at the time of closing operation suitable A method for controlling a drive motor for a device can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 3, the vehicle 1 is provided with a roof glass 4 as an opening / closing body with respect to a roof opening 3 formed as a rectangular opening on the roof panel 2 of the vehicle 1. The roof glass 4 can be moved up and down (tilt opening and closing operation) with the vehicle width direction as a fulcrum at the front end portion of the roof glass 4 and can be reciprocated and moved back and forth (sliding opening and closing operation). And the roof glass 4 is opened and closed by the operation | movement of the sunroof drive mechanism which is not shown in figure using the drive motor 5 which comprises a sunroof apparatus as the drive source. The drive motor 5 is accommodated between the upper end portion of the windshield and the front end portion of the roof opening 3 between the roof panel 2 and a molded ceiling panel (not shown).

  FIG. 1 is a block diagram showing an electrical configuration of a control device 7 that controls the operation of the roof glass 4 and constitutes a sunroof device. The control device 7 controls the drive unit 6 based on the drive motor 5, the drive unit 6 that controls the drive motor 5, the speed detection signal output from the vehicle speed sensor 8, and the operation of the operation switch 9. An ECU (electronic control unit) 10 is provided as a control unit to be performed. The ECU 10 serves as a pinching control unit and a threshold value changing unit. The ECU 10 is supplied with driving power from the battery 11.

  Drive power + B is supplied from the battery 11 to the drive unit 6. The drive unit 6 includes two drive relays 12 and 13 that are controlled by the ECU 10 and one switching relay 14 that is also controlled by the ECU 10 and constitutes a rotational torque switching unit. The switch 12a provided in the drive relay 12 includes two contact points 12b and 12c and a movable terminal 12d that is connected to be switched between the contact points 12b and 12c under the control of the ECU 10. The contact 12b is connected to the ground GND, and the contact 12c is connected to the battery and receives the supply of the drive power source + B. The movable terminal 12 d is connected to one power supply terminal 5 a of the drive motor 5. Similar to the drive relay 12, the switch 13 a provided in the drive relay 13 includes two contact points 13 b and 13 c and a movable terminal 13 d that is switched and connected between the contact points 13 b and 13 c under the control of the ECU 10. The contact 13b is connected to the ground GND, and the contact 13c is connected to a movable terminal 14d of the switching relay 14 described later. The movable terminal 13 d is connected to the other power supply terminal 5 b of the drive motor 5.

  The switch 14a of the switching relay 14 includes two contacts 14b and 14c and a movable terminal 14d that is connected to be switched between the contacts 14b and 14c under the control of the ECU 10. The contact point 14b is connected to the battery and supplied with the driving power source + B, and the contact point 14c is connected to the battery via the resistor 15 constituting the rotational torque switching means and supplied with the driving power source + B.

  The operation switch 9 outputs an opening operation on signal and an opening operation off signal regarding the tilt opening operation of the roof glass 4 to the ECU 10, and outputs a closing operation on signal and a closing operation off signal regarding the tilt closing operation of the roof glass 4 to the ECU 10. To do.

  When the operation switch 9 is not operated, the ECU 10 receives the opening operation off signal and the closing operation off signal from the operation switch 9, and controls the drive unit 6 so as to keep the drive motor 5 stopped. That is, the movable terminals 12d and 13d of the drive relays 12 and 13 are connected to the contacts 12b and 13b, respectively. That is, the ECU 10 connects both power supply terminals 5a and 5b of the drive motor 5 to the ground GND.

  When the operation switch 9 is operated and an opening operation on signal is input from the operation switch 9, the ECU 10 controls the drive unit 6 so that the roof glass 4 is tilted up, that is, the drive relay 12. The drive motor 5 is driven by connecting the movable terminal 12d to the contact 12c. That is, the ECU 10 supplies drive power + B to one power supply terminal 5a of the drive motor 5, and connects the other power supply terminal 5b to the ground GND. Eventually, when the operation of the operation switch 9 is stopped, an open operation off signal is input from the operation switch 9, and the ECU 10 controls the drive unit 6 so that the drive motor 5 stops, that is, the movable terminal 12d of the drive relay 12. Is connected to the contact 12b.

  On the other hand, when the operation switch 9 is operated to input a closing operation on signal from the operation switch 9, the ECU 10 controls the drive unit 6 so that the roof glass 4 is tilted down, that is, the drive relay 13. The movable motor 13d is connected to the contact 13c to drive the drive motor 5. That is, the ECU 10 connects one power supply terminal 5a of the drive motor 5 to the ground GND and supplies the drive power supply + B to the other power supply terminal 5b via the switching relay 14. Eventually, when the operation of the operation switch 9 is stopped, a closing operation OFF signal is input from the operation switch 9, and the ECU 10 controls the drive unit 6 so that the drive motor 5 stops, that is, the movable terminal 13 d of the drive relay 13. Is connected to the contact 13b.

  Further, a vehicle speed detection signal corresponding to the traveling speed of the vehicle 1 is input to the ECU 10 from a vehicle speed sensor 8 connected to the ECU 10. Then, the ECU 10 determines whether the traveling speed of the vehicle 1 is in the low speed region α or the high speed region β based on the vehicle speed detection signal input from the vehicle speed sensor 8 and controls the drive unit 6. To do. In this embodiment, the low speed region α is less than 2 [km / h], and the high speed region β is 2 [km / h] or more. When the ECU 10 determines that the traveling speed of the vehicle 1 is in the low speed region α, the ECU 10 controls the switching relay 14 to connect the movable terminal 14d to the contact 14c. That is, the ECU 10 supplies the drive power + B to the power terminal 5b of the drive motor 5 via the resistor 15 when the traveling speed of the vehicle 1 is in the low speed region α and the roof glass 4 is tilted down. The drive current supplied to the drive motor 5 is reduced by the resistance value of the resistor 15. On the other hand, when determining that the traveling speed of the vehicle 1 is in the high speed region β, the ECU 10 controls the switching relay 14 to connect the movable terminal 14d to the contact 14b. That is, when the traveling speed of the vehicle 1 is in the high speed region β and the roof glass 4 is tilted down, the ECU 10 directly supplies the driving power + B to the power supply terminal 5 b of the driving motor 5 to drive the vehicle 1. The drive current supplied to the drive motor 5 is made larger than in the case where the speed is in the low speed region α.

  The drive motor 5 is integrally provided with a rotation speed detection device 16 for detecting the rotation speed of the drive motor 5. The rotation speed detection device 16 includes a pair of Hall element magnetic sensors 16 a and 16 b for detecting the rotation period (rotation speed) and rotation direction of the drive motor 5. The Hall element magnetic sensors 16a and 16b constitute a sandwiching control unit together with the ECU 10. Specifically, a sensor magnet (not shown) magnetized in the rotation direction is provided on the rotating shaft (not shown) of the drive motor 5 so as to rotate integrally with the rotating shaft, and in the vicinity of the sensor magnet. The Hall element magnetic sensors 16a and 16b are arranged at predetermined positions in the rotational direction. That is, the rotation sensor of this embodiment uses a non-contact type rotation sensor using magnetism. Each Hall element magnetic sensor 16a, 16b outputs a pulsed output signal to the ECU 10 according to the rotation of the drive motor 5 when the drive motor 5 rotates. The output signals (pulse signals) output from the Hall element magnetic sensors 16a and 16b have a phase difference (for example, a 1/2 cycle). The rotation speed detection device 16 shapes the waveform of each output signal (pulse signal) and outputs it to the ECU 10.

  ECU10 detects the rotation period (rotation speed) of the drive motor 5 based on the period of the output signal (pulse signal) input from the rotation speed detection apparatus 16 (each Hall element magnetic sensor 16a, 16b).

  That is, when the operation switch 9 is operated and the opening operation ON signal is input, the ECU 10 adds “1” to the count number for each cycle of the output signal (pulse signal) (for example, based on the rising edge). To do. On the other hand, when the operation switch 9 is operated and the closing operation ON signal is input, the ECU 10 subtracts “1” from the count number added at the time of opening every cycle of the output signal (pulse signal). The ECU 10 detects the open / close position of the roof glass 4 (the vertical position of the roof glass 4 during the tilting operation) according to the count number.

  Further, the ECU 10 detects the rotation direction of the drive motor 5 according to the phase difference of each output signal (pulse signal), and based on the detection of the rotation direction of the drive motor 5, the opening / closing direction (vertical direction) of the roof glass 4. Is detected.

  In the ECU 10, a predetermined threshold value (reference rotation speed) is set in order to determine whether foreign matter is caught between the roof opening 3 and the roof glass 4 from the detected rotation speed of the drive motor 5. This threshold value is the pulse width of the output signal (pulse signal) output from the rotational speed detection device 16 (Hall element magnetic sensors 16a and 16b) when the drive motor 5 is driven at a predetermined rotational speed ( The rotation period of the drive motor). The predetermined rotation speed is a reference rotation speed for determining that a foreign object is sandwiched between the roof opening 3 and the roof glass 4. The threshold value will be described in detail. Pulse widths X1 and X2 are set as threshold values in the low speed region α and the high speed region β, respectively. In the present embodiment, when the traveling speed of the vehicle 1 is in the high speed region β and the roof glass 4 is tilted closed, the ECU 10 causes the driving motor to be compared with the case where the traveling speed of the vehicle 1 is in the low speed region α. The driving current supplied to 5 is controlled to be large. That is, when the traveling speed of the vehicle 1 is in the high speed region β and the roof glass 4 is tilted closed, the drive motor 5 has a rotational torque compared to the case where the traveling speed of the vehicle 1 is in the low speed region α. Driven to be larger. Therefore, the pulse width X1 as the threshold value in the high speed region β is set to be shorter than the pulse width X2 as the threshold value in the low speed region α. Incidentally, when considering the rotational speed of the drive motor 5, the rotational speed of the drive motor 5 when the output signal having the pulse width X2 as the threshold value in the high speed region β is output from the rotational speed detection device 16 is in the low speed region. The output signal having a pulse width X1 as a threshold value at α is larger than the rotational speed of the drive motor 5 when the rotational speed detector 16 outputs the output signal.

  In this way, threshold values (pulse widths X2 and X1) are set in the low speed region α and the high speed region β, respectively, and depending on whether the traveling speed of the vehicle 1 is in the low speed region α or the high speed region β. In accordance with the rotational torque of the drive motor 5 to be changed, the ECU 10 changes the threshold value in accordance with the control of the switching relay 14 performed by the ECU 10. Thereby, the sandwiching load is stabilized in both the low speed region α and the high speed region β. Then, the ECU 10 sets the pulse width Y (rotation cycle of the drive motor) of the output signal output from the rotation speed detection device 16 as a preset threshold value while the roof glass 4 performs the tilt closing operation. If it becomes longer than the pulse width, it is determined that the pulse width Y has become longer (the rotational speed of the drive motor has decreased) because foreign matter has been sandwiched by the roof glass 4. At this time, the ECU 10 changes the pulse widths X1 and X2 as thresholds according to whether the traveling speed of the vehicle 1 is in the low speed region α or the high speed region β. Based on this determination, the ECU 10 controls the drive relays 12 and 13 to reversely drive the motor, and opens the roof glass 4 to the fully open position in tilt-up so that the trapped foreign matter can be released. At this time, the ECU 10 switches the count number from subtraction to addition based on the reverse drive of the drive motor 5.

The operation of the control device 7 configured as described above will be described focusing on the vertical movement (tilt up and tilt down) of the roof glass 4.
FIG. 1 shows a state of the control device 7 when the vehicle 1 is stopped and the drive motor 5 is stopped. In the drive relays 12 and 13, since the movable terminals 12d and 13d are connected to the contacts 12b and 13b, respectively, the drive power source + B is not supplied to the drive motor 5, and the drive motor 5 is not driven.

  From this state, when the operation switch 9 is operated to tilt up the roof glass 4 and an opening operation ON signal is input to the ECU 10 from the operation switch 9, the drive relay 12 is controlled by the ECU 10 to move the movable terminal 12d. Is connected to the contact 12c. Accordingly, the driving power source + B is supplied to the driving motor 5 to drive the driving motor 5, and the roof glass 4 is tilted up via the sunroof driving mechanism. While the opening operation ON signal is input to the ECU 10, the driving power source + B is supplied and the driving motor 5 is continuously driven. When the operation of the operation switch 9 is stopped to end the tilt opening operation of the roof glass 4, an opening operation off signal is input to the ECU 10, and the ECU 10 controls the drive relay 12 to connect the movable terminal 12d to the contact 12b. Then, the supply of the drive power source + B is stopped and the drive motor 5 is stopped. When the roof glass 4 is disposed at the fully open position in the tilt-up state, the ECU 10 controls the drive relay 12 to move the movable terminal 12d even when the operation switch 9 is operated and the open operation on signal is input to the ECU 10. The drive motor 5 is stopped by connecting to the contact 12c.

  Next, in order to tilt down the roof glass 4 in the tilted up state, when the operation switch 9 is operated and a closing operation on signal is input from the operation switch 9 to the ECU 10, the drive relay 13 is moved by the ECU 10. Controlled, the movable terminal 13d is connected to the contact 13c. Further, the ECU 10 determines whether the traveling speed of the vehicle 1 is in the low speed region α (less than 2 [km / h]) or the high speed region β (2 [km / h] based on the vehicle speed detection signal input from the vehicle speed sensor 8. ] Or more). When it is determined that the traveling speed of the vehicle 1 is in the low speed region α, the ECU 10 controls the switching relay 14 to connect the movable terminal 14d to the contact 14c. Then, the drive motor 5 is driven through the resistor 15 so that the drive motor 5 rotates in the direction opposite to that during the tilt opening operation, and the drive motor 5 is driven. It is chilled down via a sunroof drive mechanism. On the other hand, when it is determined that the traveling speed of the vehicle 1 is in the high speed region β, the ECU 10 controls the switching relay 14 to connect the movable terminal 14d to the contact 14b. Then, the drive motor 5 is driven by being directly supplied to the drive motor 5 with a drive power source + B that does not go through the resistor 15 so that the drive motor 5 rotates in the direction opposite to the tilt opening operation. The roof glass 4 is chilled down via a sunroof drive mechanism.

  That is, when the traveling speed of the vehicle 1 is in the low speed region α during the tilt closing operation of the roof glass 4, the driving power source + B is supplied to the driving motor 5 through the resistor 15, so that the traveling speed of the vehicle 1 is high. The drive current supplied to the drive motor 5 is reduced as compared to the case where the drive power supply + B is directly supplied to the drive motor 5 as in the region β. As a result, as shown in FIG. 2, when the traveling speed of the vehicle 1 is in the low speed region α, the rotational torque of the drive motor 5 can be suppressed smaller than when the traveling speed of the vehicle 1 is in the high speed region β. (However, the rotational speed of the drive motor 5 is kept constant). In other words, when the traveling speed of the vehicle 1 is in the high speed region β, the rotational torque of the drive motor 5 is made larger than when the traveling speed of the vehicle 1 is in the low speed region α.

  That is, as the traveling speed of the vehicle increases, a force that is pulled upward (pushed up) on the roof glass 4 increases, and accordingly when the traveling speed of the vehicle 1 is in the high speed region β. As compared with the case where the traveling speed of the vehicle 1 is in the low speed region α, the rotational torque of the drive motor 5 is relatively increased so that the closing force of the roof glass 4 is increased. On the other hand, when the traveling speed of the vehicle 1 is in the low speed region α, the rotational torque of the drive motor 5 is relatively reduced compared to the case where the traveling speed of the vehicle 1 is in the high speed region β. The sandwiching load by the glass 4 is made small.

  Then, while the closing operation ON signal is input to the ECU 10, the driving power source + B is supplied and the driving of the driving motor 5 as described above is continued. When the operation of the operation switch 9 is stopped to finish the tilt closing operation of the roof glass 4, a closing operation off signal is input to the ECU 10, and the ECU 10 controls the drive relay 12 to connect the movable terminal 12d to the contact 12b. Then, the supply of the drive power source + B is stopped and the drive motor 5 is stopped. When the roof glass 4 is disposed at the fully closed position in the tilt down state, the ECU 10 controls the driving relay 13 to contact the movable terminal 13d even if the operation switch 9 is operated and the closing operation ON signal is input. The drive motor 5 is stopped by being connected to 13b.

Next, a specific processing flow when the roof glass 4 is tilted down by the ECU 10 that controls the driving of the drive motor 5 as described above will be described with reference to FIG.
In step S <b> 1, the ECU 10 determines whether or not a closing operation on signal is input from the operation switch 9. When the closing operation on signal is input from the operation switch 9, the ECU 10 proceeds to step S2. In step S2, the ECU 10 controls the drive relay 12 to connect the movable terminal 12d to the contact 12b, controls the drive relay 13 to connect the movable terminal 13d to the contact 13c, and proceeds to step S3.

  In step S3, the ECU 10 determines whether or not the traveling speed of the vehicle 1 is in the low speed region α. If the ECU 10 determines that the traveling speed of the vehicle 1 is in the low speed region α, the ECU 10 proceeds to step S4, controls the switching relay 14, connects the movable terminal 14d to the contact 14c, and proceeds to step S5.

  In step S5, the ECU 10 determines whether or not the pulse width Y of the input signal (pulse signal) input from the rotational speed detection device 16 is longer than the pulse width X2 as a threshold value in the low speed region α. If it is determined that the pulse width Y is not longer than the pulse width X2, that is, the pulse width Y is equal to or less than the pulse width X2, the ECU 10 proceeds to step S6.

  In step S6, the ECU 10 determines whether or not the roof glass 4 is disposed at the fully closed position in the tilt down. If it determines with the roof glass 4 being arrange | positioned in the fully closed position in a tilt down, ECU10 will progress to step S7 and will stop the drive motor 5. FIG.

On the other hand, if it determines with the roof glass 4 not being arrange | positioned in the fully closed position in tilt down in step S6, ECU10 will return to step S5.
In step S5, when the ECU 10 determines that the pulse width Y of the input signal (pulse signal) input from the rotational speed detection device 16 is longer than the pulse width X2 as the threshold value in the low speed region α, the ECU 10 Then, it is determined that a foreign object has been sandwiched between the roof opening 3 and the roof glass 4, and the process proceeds to step S8. In step S8, the ECU 10 reversely drives the drive motor 5 in order to release the caught foreign matter, and proceeds to step S9.

  In step S9, the ECU 10 determines whether or not the roof glass 4 is tilted up and disposed at the fully opened position in the tilt-up so that the foreign matter caught in the opening can be opened. If it determines with the roof glass 4 having been arrange | positioned in the fully open position in tilt-up, ECU10 will progress to step S10 and will stop the drive motor 5. FIG.

  On the other hand, if it is determined in step S3 that the traveling speed of the vehicle 1 is not in the low speed region α, that is, the traveling speed of the vehicle 1 is in the high speed region β, the ECU 10 proceeds to step S11 and controls the switching relay 14. The movable terminal 14d is connected to the contact 14b, and the process proceeds to step S12.

  In step S12, the ECU 10 determines whether or not the pulse width Y of the input signal (pulse signal) input from the rotational speed detection device 16 is longer than the pulse width X1 as a threshold value in the high speed region β. If it is determined that the pulse width Y is not longer than the pulse width X1, that is, the pulse width Y is equal to or less than the pulse width X1, the ECU 10 proceeds to step S13.

  In step S13, the ECU 10 determines whether or not the roof glass 4 is disposed at the fully closed position in the tilt down. If it determines with the roof glass 4 being arrange | positioned in the fully closed position in a tilt down, ECU10 will progress to step S7 and will stop the drive motor 5. FIG.

On the other hand, if it determines with the roof glass 4 not being arrange | positioned in the fully closed position in tilt down in step S13, ECU10 will return to step S12.
In step S12, when the ECU 10 determines that the pulse width Y of the input signal (pulse signal) input from the rotational speed detection device 16 is longer than the pulse width X1 as the threshold value in the high speed region β, the ECU 10 Then, it is determined that a foreign object has been sandwiched between the roof opening 3 and the roof glass 4, and the process proceeds to step S8. In step S8, the ECU 10 reversely drives the drive motor 5 to allow the foreign matter sandwiched to be released, and proceeds to step S9. In step S9, the ECU 10 determines whether or not the roof glass 4 is tilted up and disposed at the fully open position in the tilt up so that the foreign matter sandwiched can be opened, and the roof glass 4 is fully opened in the tilt up. If it determines with having arrange | positioned in the position, ECU10 will progress to step S10 and will stop the drive motor 5. FIG.

As described above, the present embodiment has the following effects.
(1) During the tilt closing operation of the roof glass 4, the traveling speed of the vehicle 1 is increased, that is, the rotational speed of the drive motor 5 is relatively larger when the traveling speed is higher in the high speed region β than in the low speed region α. Further, the switching relay 14 is controlled by the ECU 10. In general, as the traveling speed of the vehicle 1 increases, the force that is pulled upward (pushed up) on the roof glass 4 increases. Therefore, according to the force, when the traveling speed of the vehicle 1 is in the high speed region β, the rotational torque of the drive motor 5 is increased compared to the case where the traveling speed of the vehicle 1 is in the low speed region α, The closing force of the roof glass 4 increases, and the closing force can be made suitable. Further, when the traveling speed of the vehicle 1 is in the low speed region α, the sandwiching load by the roof glass 4 is reduced by reducing the rotational torque of the drive motor 5 compared to the case where the traveling speed of the vehicle 1 is in the high speed region β. Can be kept small, and the pinching load can be made suitable.

  (2) When the roof glass 4 is tilted and closed, the traveling speed region of the vehicle 1 is divided into two speed regions, a low speed region α and a high speed region β, so that the rotational torque of the drive motor 5 is also controlled in two stages. It becomes possible. Therefore, it is possible to easily control the rotational torque of the drive motor 5 to make the closing force and the pinching load suitable. Further, the rotational torque of the vehicle 1 can be controlled more easily than dividing the traveling speed region of the vehicle 1 into two or more.

  (3) Even if the rotational torque of the drive motor 5 is switched by the control of the switching relay 14 by the ECU 10 depending on whether the traveling speed of the vehicle 1 is in the low speed region α or the high speed region β, the roof opening 3 The threshold value set for determining whether or not foreign matter is caught between the roof glass 4 is changed by the ECU 10 in accordance with the control of the switching relay 14. Therefore, since the threshold value for determining whether or not foreign matter is caught is changed in accordance with the change of the rotational torque as well as the change of the rotational torque of the drive motor 5, the traveling speed of the vehicle 1 is in the low speed region α. And the high speed region β, the sandwiching load can be made more stable.

  (4) The switching relay 14 and the resistor 15 are used to configure a means for switching the rotational torque of the drive motor 5. Therefore, the means for switching the rotational torque, and hence the control device 7 can be simplified. In addition, the rotational torque of the drive motor 5 can be changed by PWM control using a switching element such as a transistor, but compared with this, the generation of electromagnetic noise can be suppressed.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the switching relay 14 and the resistor 15 are used as the rotational torque switching means for changing the rotational torque of the drive motor 5, but this is not restrictive. For example, as shown in FIG. 5, a three-brush drive motor 21 having a low-speed drive brush 22 and a high-speed drive brush 23 may be employed as the rotational torque switching means. The common brush 24 provided in the drive motor 21 is connected to the movable terminal 12 d of the drive relay 12. The low-speed driving brush 22 and the high-speed driving brush 23 are connected to a switch 25 a provided in the brush switching relay 25. The switch 25a includes two contact points 25b and 25c and a movable terminal 25d that is connected to be switched between the contact points 25b and 25c under the control of the ECU 10. The low speed driving brush 22 is connected to the contact point 25b, and the high speed driving brush 23 is connected to the contact point 25c. The brush switching relay 25 is connected to the movable terminal 13 d of the drive relay 13. In the control device 27 having such a drive unit 26, when the roof glass 4 is tilted and closed (the movable terminal 12d is connected to the contact 12b and the movable terminal 13d is connected to the contact 13c), the ECU 10 is connected to the vehicle 1. Is determined to be in the low speed region α, the movable terminal 25d is connected to the contact 25c, and power is supplied from the high-speed driving brush 23. That is, as shown in the characteristic diagram of FIG. 6, the rotational torque of the drive motor 21 is reduced. Conversely, when the ECU 10 determines that the traveling speed of the vehicle is in the high speed region β, the movable terminal 25d is connected to the contact 25b, and power is supplied from the low speed driving brush 22. That is, the rotational torque of the drive motor 21 becomes larger than the characteristic diagram shown in FIG. Even if it comprises in this way, even if the travel speed of the vehicle 1 changes, the closing force and pinching load at the time of the tilt closing operation of the roof glass 4 become suitable.

  When the ECU 10 determines that a foreign object has been caught between the roof opening 3 and the roof glass 4, the ECU 10 supplies power to the drive motor 21 from the high-speed drive brush 23 regardless of the traveling speed of the vehicle 1. Thus, the drive motor 21 may be controlled to be driven in reverse. If it does in this way, the foreign material pinched | interposed between the roof glass 4 and the roof panel 2 can be released more quickly.

  In the above embodiment, the switching relay 14 and the resistor 15 are used as the rotational torque switching means for changing the rotational torque of the drive motor 5, but PWM control is performed using a switching element such as a transistor, and the drive motor 5 The rotational torque may be changed. With this configuration, it is possible to control the rotational torque of the drive motor 5 in accordance with the traveling speed of the vehicle 1.

  In the above embodiment, the low speed region α is set to less than 2 [km / h] and the high speed region β is set to 2 [km / h] or more, but this value is appropriately determined according to the force acting on the vehicle 1 and the roof glass 4. You only have to set it. Further, the rotational torque of the drive motor 5 may be changed stepwise by dividing it into two or more speed regions. In this case, it is preferable to determine a pulse width (rotation cycle of the drive motor) as a threshold value for detecting foreign object pinching for each of a plurality of speed regions. At this time, the pulse width as the threshold is set shorter as the traveling speed of the vehicle 1 becomes higher.

  In the above embodiment, when the ECU 10 determines that foreign matter is caught between the roof opening 3 and the roof glass 4, the roof glass 4 is tilted up to the fully open position in the tilt-up, but this is not restrictive. . When it is determined that a foreign object is caught between the roof opening 3 and the roof glass 4, the ECU 10 tilts the roof glass 4 from between the roof opening 3 and the roof glass 4 to a position where the foreign object can be opened. Control may be performed so that the opening operation is performed. In this case, the position where the foreign object can be opened from between the roof opening 3 and the roof glass 4 may be determined in advance by the count number.

  In the above embodiment, the ECU 10 determines whether foreign matter is caught in the entire region where the roof glass 4 is tilt-closed when the roof glass 4 is tilt-closed. However, it may be determined that the foreign object is caught only within a predetermined range of the operation range when the roof glass 4 is tilted closed. The range for determining the pinching is preset by the count number as a range obtained by adding a predetermined count number from the count number when the roof glass 4 is disposed at the fully closed position in the tilt down.

In the above embodiment, the roof glass 4 is used as the opening / closing body, but an opening / closing body formed of a material other than glass may be used.
The technical idea that can be grasped from each of the above embodiments will be described below.

  (A) The sunroof drive motor control device according to any one of claims 1 to 4, wherein the rotational torque switching means has a predetermined current value of the drive power supplied to the drive motor. And a switch circuit that changes the rotational torque of the drive motor by selecting the predetermined resistance and a control device for the drive motor for the sunroof device.

  (B) The sunroof device according to any one of claims 5 to 8, wherein the rotational torque switching unit is a resistor that sets a current value of a driving power source supplied to the driving motor to a predetermined current value. And a control circuit for the drive motor for the sunroof device, comprising: a switch circuit that selects a predetermined resistance and changes a rotational torque of the drive motor.

  When configured as described in (a) and (b) above, the rotational torque switching means for changing the rotational torque of the drive motor, and thus the control device, can be simplified.

The block diagram which shows the control apparatus of the roof glass of this embodiment. The characteristic view which shows the relationship between the rotational torque and rotational speed of the drive motor of this embodiment. The figure which shows the tilt opening / closing operation | movement of a roof glass. The flowchart which shows the control aspect at the time of the tilt closing operation | movement of a roof glass. The block diagram which shows the control apparatus of the roof glass of another example. The characteristic view which shows the relationship between the rotational torque and rotational speed in the drive motor of another example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle, 2 ... Roof panel, 3 ... Roof opening part as opening part, 4 ... Roof glass as opening-closing body, 5,21 ... Drive motor, 6,26 ... Drive part, 7, 27 ... Control apparatus, 10 ... Control unit, sandwiching control means, ECU as threshold value changing means, 14... Switching relay constituting rotational torque switching means, 15... Resistor constituting rotational torque switching means, 16 a and 16 b. Hall element magnetic sensor, 22... Low speed driving brush constituting rotational torque switching means, 23... High speed driving brush constituting rotational torque switching means, 25... Brush switching relay constituting rotational torque switching means, .alpha. Region, β ... High-speed region.

Claims (9)

A control device for a drive motor for a sunroof device that opens and closes an opening / closing body that performs a tilt opening / closing operation on an opening formed in a roof panel of a vehicle,
A drive unit that supplies a drive power to the drive motor and rotates the drive motor; and a control unit that controls the drive unit to control the rotation drive of the drive motor,
The drive unit has a rotation torque switching means for switching the rotation torque of the drive motor,
The control unit controls the rotational torque switching means so that the rotational torque of the drive motor becomes relatively larger than that at a low speed as the traveling speed of the vehicle increases during the tilt closing operation of the opening / closing body. A control device for a drive motor for a sunroof device. A control device for a drive motor for a sunroof device according to claim 1,
The traveling speed area of the vehicle is divided into a plurality of speed areas,
The control unit is configured so that the rotational torque of the drive motor gradually increases as compared with the low speed when the speed region becomes a high speed region during the tilt closing operation of the opening / closing body. A control device for a drive motor for a sunroof device, characterized by controlling switching means. A control device for a drive motor for a sunroof device according to claim 2,
The vehicle traveling speed region is divided into two speed regions, a low speed region and a high speed region,
The control unit is configured to switch the rotational torque so that the rotational torque of the drive motor in the high speed region is relatively larger than the rotational torque of the drive motor in the low speed region during the tilt closing operation of the opening / closing body. Control device for drive motor for sunroof device A control device for a drive motor for a sunroof device according to any one of claims 1 to 3,
Based on a threshold value for determining that foreign matter is caught between the opening and the opening / closing body, the presence / absence of foreign matter is determined. If it is determined that the foreign matter is caught, the foreign matter is released. It is provided with pinching control means for controlling the drive motor so as to be possible,
Corresponding to the control of the rotational torque switching means by the control unit, the sunroof apparatus has a threshold value changing means for changing the threshold value so that a pinching load by the opening / closing body is stabilized Control device for drive motor. A drive motor that opens and closes an opening / closing body that performs a tilt opening / closing operation with respect to an opening formed in a roof panel of the vehicle;
A drive unit that supplies drive power to the drive motor to rotate the drive motor, and a control unit that controls the drive unit and controls the drive motor to control the drive motor. A sunroof device,
The drive unit has a rotation torque switching means for switching the rotation torque of the drive motor,
The control unit controls the rotational torque switching means so that the rotational torque of the drive motor becomes relatively larger than that at a low speed as the traveling speed of the vehicle increases during the tilt closing operation of the opening / closing body. A sunroof device characterized by: The sunroof device according to claim 5,
The traveling speed area of the vehicle is divided into a plurality of speed areas,
The control unit is configured so that the rotational torque of the drive motor gradually increases as compared with the low speed when the speed region becomes a high speed region during the tilt closing operation of the opening / closing body. A sunroof device for controlling switching means. The sunroof device according to claim 6,
The vehicle traveling speed region is divided into two speed regions, a low speed region and a high speed region,
The control unit is configured to switch the rotational torque so that the rotational torque of the drive motor in the high speed region is relatively larger than the rotational torque of the drive motor in the low speed region during the tilt closing operation of the opening / closing body. The sunroof device characterized by controlling. The sunroof device according to any one of claims 5 to 7,
Based on a threshold value for determining that foreign matter is caught between the opening and the opening / closing body, the presence / absence of foreign matter is determined. If it is determined that the foreign matter is caught, the foreign matter is released. It is provided with pinching control means for controlling the drive motor so as to be possible,
A sunroof comprising a threshold value changing means for changing the value of the threshold value so that a sandwiching load by the opening and closing body is stabilized in response to the control of the rotational torque switching means by the control unit. apparatus. A control method for a drive motor for a sunroof device that opens and closes an opening / closing body that performs a tilt opening / closing operation on an opening formed in a roof panel of a vehicle,
A drive motor for a sunroof apparatus, characterized in that, during the tilt closing operation of the opening / closing body, the rotational torque of the drive motor is controlled to be relatively larger than that at low speed as the traveling speed of the vehicle increases. Control method.

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