WO1997048868A1 - Appareil a ouvrir et fermer les fenetres - Google Patents

Appareil a ouvrir et fermer les fenetres Download PDF

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Publication number
WO1997048868A1
WO1997048868A1 PCT/JP1997/001820 JP9701820W WO9748868A1 WO 1997048868 A1 WO1997048868 A1 WO 1997048868A1 JP 9701820 W JP9701820 W JP 9701820W WO 9748868 A1 WO9748868 A1 WO 9748868A1
Authority
WO
WIPO (PCT)
Prior art keywords
motor
load
entrapment
motor load
window
Prior art date
Application number
PCT/JP1997/001820
Other languages
English (en)
Japanese (ja)
Inventor
Masato Kume
Noritaka Ohiro
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO1997048868A1 publication Critical patent/WO1997048868A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
    • H02H7/0851—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load for motors actuating a movable member between two end positions, e.g. detecting an end position or obstruction by overload signal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/08—Windows; Windscreens; Accessories therefor arranged at vehicle sides
    • B60J1/12—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable
    • B60J1/16—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable slidable
    • B60J1/17—Windows; Windscreens; Accessories therefor arranged at vehicle sides adjustable slidable vertically
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed

Definitions

  • the present invention relates to a window opening / closing device that opens and closes a window by driving a motor, and more particularly to a window opening / closing device that can detect entrapment of foreign matter during opening / closing operations.
  • a technique for opening and closing windows by a motor is known, and a so-called power window in which a side window of a vehicle is opened and closed by a motor is a typical example thereof.
  • a window is automatically opened and closed by a motor drive, it is necessary to perform control such as stopping the opening and closing operation when a foreign object is caught between the opening and closing part and the frame part. This is to prevent the foreign substance itself and the opening / closing portion of the window from being damaged due to the foreign substance being pinched.
  • Japanese Patent Laid-Open No. Hei 5-95694 discloses a technique for detecting such a foreign substance being caught. This is to generate a pulse according to the rotation speed of the motor and detect the entrapment of the object by the change of the pulse cycle. When a foreign object is caught, the load on the motor increases and the number of rotations decreases, which is detected.
  • the change in the pulse period is not a unique factor for determining the occurrence of pinching.
  • the amount of change in the pulse cycle may be different from the initial one.
  • the motor load is also different from when the vehicle is stopped and when the vehicle is traveling at low speed, for example, when the window glass is sucked out due to the pressure difference between the inside and outside of the vehicle compartment that occurs during high-speed traveling in the vehicle power window. Therefore, the change in pulse period when pinching occurs differs. Disclosure of the invention
  • the wooden invention was made in order to solve the above-mentioned problem, It is an object of the present invention to provide a window opening / closing device that can reliably detect a foreign object being caught even when the load changes in a state where there is no window.
  • a window opening / closing device is a device for opening and closing window glass by a motor, comprising: a pulse generating means for generating a pulse at a cycle corresponding to the speed of the motor; A cycle calculating means for calculating a cycle of the pulse; a motor load calculating means for calculating a motor load based on the cycle; and a motor load for calculating a change in a predetermined time of the motor load from the calculated motor load.
  • the pinching of foreign matter is detected based on the motor load when the window glass is opened and closed, so that more accurate detection is possible.
  • the entrapment estimating means can estimate the entrapment only when the motor load is monotonously applied. In this case, when the window glass is not smoothly opened and closed, and there is a change in the motor load, for example, it is possible to discriminate the object from being pinched.
  • FIG. 1 is a schematic configuration diagram of a window opening / closing device according to the tree invention.
  • FIG. 2 is a configuration block diagram of a control unit of the window opening / closing device according to the embodiment of the present invention.
  • Fig. 3 is a control flowchart of the present embodiment.
  • Fig. 4 is a diagram showing an equivalent circuit of a general motor.
  • Figure 5 top 13 ⁇ 4 the form of the r invention 'J3 ⁇ 4 Hodokosuru for a diagram showing the balance of forces of external forces applied to the motor and the motor torque
  • FIG. 1 shows the schematic structure of a vehicle power window.
  • Door 10 is the body 1 2 and sash 14 And a window glass 16 that slides along the guide rails 15.
  • the window is driven by a motor 18 to open and close.
  • the motor 18 is arranged in the door main body 12 in such a direction that its drive shaft is substantially contained in the plane of FIG.
  • the rotation of the motor drive shaft is transmitted via a worm gear or the like to a toothed drive pulley 20 having a rotation axis orthogonal to the paper surface.
  • a toothed belt 26 is stretched over two driven pulleys 22 and 24 arranged vertically in the drive pulley 20 and the door body 12. Further, to the toothed belt 26, a support fitting 28 supporting the lower end of the window glass is fixed. Accordingly, the toothed belt is rotated by the rotation of the motor, and in accordance with this, the support ft 28 moves up and down depending on the driven pulleys 22 and 24 ( , and the opening and closing of the window glass is performed).
  • the motor is provided with a rotation speed sensor 29 that generates a predetermined number of square pulses per rotation in order to detect the rotation speed. Therefore, the rotation speed sensor 29 functions as a pulse generation stage.
  • the output of the rotation speed sensor 29 is sent to the control unit 30.
  • the control unit 30 has a configuration shown in FIG. That is, a load change amount calculation unit 32 that calculates a change amount of a motor load, that is, a change amount of a load applied when the window glass is opened and closed, based on the pulse cycle, and an integration unit that integrates the change It under a predetermined condition. And a judging section 36 for judging the presence or absence of foreign matter based on the integrated value.
  • the control unit 30 is actually a microcomputer, and operates according to a program stored in advance, thereby controlling the load. It functions as the change amount calculating section 32, the integrating section 34, and the determining section 36.
  • k is a proportionality constant, and its actual value will be described later.
  • the positive / negative judgment of the load change ⁇ d is performed (S 102), and if 0 or positive, the load F p is calculated by the following equation:
  • More load change delta F is i Oh 1 Go of iH
  • the load F n is updated to 0 (S 1 08), in the case of a negative updates the load F p to 0 (S 1 1 0).
  • the loads F p and F n integrated as described above represent the load when the Kag-ton increases for the load F p and the load when the load monotonically decreases for the load! 7 n. I know.
  • F p is called increasing load and F n is called decreasing load.
  • the medium load F p calculated as described above is the determination value F. Is compared with (SI 1 2), and if it exceeds the judgment value T ′,>, it is judged that a foreign object is caught (S 1 I 4). Then, the motor is controlled to stop so that no more load is applied, and the window operation is stopped. Also, judgment value F. If so, the process returns to step SI00.
  • the increasing load Fp is the predetermined determination value F. Is reached, it is determined that a foreign object has been caught.
  • the load change amount ⁇ d becomes negative, the apparent increase in the integrated value due to other factors is eliminated by setting the increasing load Fp integrated up to that point to 0.
  • FIG. 4 shows the equivalent circuit of the motor.
  • FIG. 5 shows the balance of the force applied to the motor.
  • the resistance r inductance said current flowing I upon application of the 3 ⁇ 4 source voltage E u to a motor is represented by the counter-electromotive force E Tosureba formula 4 shown below the motor.
  • the back EMF E and the generated torque N of the motor are expressed by the following equations (5) and (6).
  • the change in external force ⁇ f is a change in load ⁇ F
  • the rotation period is an integral multiple of the period of the output pulse of the rotation speed sensor. It can be seen that this is the same equation as (1).
  • the power supply voltage E of the motor Usually does not change very much in a short time, so the first term of Eq. (10) is canceled out by Eq. (11). Therefore, it is possible to make a determination that does not depend on the low pressure of the vehicle-mounted battery.
  • the load change is determined based on the change in the number of rotations of the motor, and the determination of the foreign substance entrapment is performed based only on the monotonically increasing ft load.
  • the change in load due to can be eliminated.
  • the method of calculating the motor load based on the above equation (1) is to average the pulse period of a predetermined period, substitute this for Tt , and average the pulse period of the predetermined period after this period.
  • the value of F calculated using the average value is equal to or more than a predetermined value, the entrapment is determined.
  • the operation of the window glass is stopped when it is determined that the foreign matter is caught, but the window glass is further operated in the reverse direction by a predetermined amount to release the caught foreign matter. It is also possible to do so.
  • the present invention can be applied to a structure other than a vehicle, for example, an opening / closing mechanism of an electric window provided on a door of a building, and also to an automatic door of a building.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Window Of Vehicle (AREA)

Abstract

Un compte-tours (29) génère des impulsions avec une périodicité correspondant à la vitesse d'un moteur. Un module de calcul (32) de différentiel de charge utilise ces impulsions pour calculer la charge moteur et en déduire le différentiel temporel de charge. Dès que la charge du moteur augmente avec régularité, un intégrateur (34) intègre une valeur de différentiel temporel de charge moteur, ce qui permet de calculer une l'écart de charge moteur par rapport à une normale. Si l'augmentation atteint au moins une valeur définie, un module d'appréciation (36) détermine qu'un corps étranger fait obstacle.
PCT/JP1997/001820 1996-06-19 1997-05-29 Appareil a ouvrir et fermer les fenetres WO1997048868A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8/158364 1996-06-19
JP15836496A JP3237521B2 (ja) 1996-06-19 1996-06-19 窓開閉装置

Publications (1)

Publication Number Publication Date
WO1997048868A1 true WO1997048868A1 (fr) 1997-12-24

Family

ID=15670075

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/001820 WO1997048868A1 (fr) 1996-06-19 1997-05-29 Appareil a ouvrir et fermer les fenetres

Country Status (2)

Country Link
JP (1) JP3237521B2 (fr)
WO (1) WO1997048868A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4802381B2 (ja) * 2000-08-30 2011-10-26 アイシン精機株式会社 開閉体の挟み込み検知装置
JP4850042B2 (ja) * 2006-11-29 2012-01-11 株式会社今仙電機製作所 モータ駆動装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08149871A (ja) * 1994-11-15 1996-06-07 Nippondenso Co Ltd ウィンドウ開閉制御装置
JPH08260810A (ja) * 1995-03-23 1996-10-08 Nippondenso Co Ltd ウィンドウ開閉制御装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08149871A (ja) * 1994-11-15 1996-06-07 Nippondenso Co Ltd ウィンドウ開閉制御装置
JPH08260810A (ja) * 1995-03-23 1996-10-08 Nippondenso Co Ltd ウィンドウ開閉制御装置

Also Published As

Publication number Publication date
JPH108826A (ja) 1998-01-13
JP3237521B2 (ja) 2001-12-10

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