JP2000130021A - Power window device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To install a power window device easily into a narrow door at a favorable occupation factor by simplifying the whole constitution, to ensure quietness by inhibiting the generation of operation noise and to improve the accuracy in the open-close positioning of a windowpane. SOLUTION: In the power window device, a linear motor 2 is mounted so that the direction of movement of an output shaft is directed in the open-close direction of a window glass 1, the window glass 1 is opened and closed directly by driving the linear motor 2, and a windowpane open-close position holding mechanism holding the open-close position of the windowpane 1 by fixing the output shafts 21 of the linear motor 2 at the time of the stoppage of the linear motor 2 is further fitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the driving of a motor in response to a switch operation to open and close a window glass of a vehicle.
The present invention relates to a power window device for closing.

[0002]

2. Description of the Related Art Conventionally, in this type of power window device, a DC motor is used as a drive source, and a window glass opening / closing mechanism including gears, links, and the like is used to rotate the DC motor in forward and reverse rotations. The window glass is lowered and raised by converting it into a linear propulsion force.

[0003]

The problem to be solved is that if a DC motor is used as a drive source to open and close the window glass through a window glass opening / closing mechanism, the entire structure will be reduced. Has become more complicated and difficult to incorporate into a narrow door.

[0004] Further, there is a problem that the noise of the rotation of the motor and the operation noise of the window glass opening / closing mechanism resonates inside the door, and the noise enters the vehicle cabin, resulting in impaired silence.

Further, when controlling the opening / closing position of the window glass by counting pulse signals generated from the pulser in synchronization with the rotation of the motor, factors such as inertia of the motor and operation delay of the window glass opening / closing mechanism cause There is a problem that the positioning accuracy of the window glass is deteriorated.

[0006]

SUMMARY OF THE INVENTION The present invention simplifies the entire structure, accommodates the door inside a narrow door with a good space factor, and keeps the operation noise generated from being a problem so as to ensure quietness in the passenger compartment. In order to improve the positioning accuracy of the window glass, a linear motor is installed so that the moving direction of the output shaft is the opening and closing direction of the window glass, and the window glass is directly opened and closed by driving the linear motor. After that, when the linear motor is stopped, an output shaft thereof is fixed and a window glass opening / closing position holding mechanism for holding the window glass opening / closing position is provided to constitute a power window device.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a power window device according to the present invention, as shown in FIG. 1, a linear motor 2 is installed so that a movement direction of an output shaft 21 is an opening and closing direction of a window glass 1. 2 is attached to the lower portion of the window glass 1 so that the linear motor 2
The opening and closing of the window glass 1 is directly performed by the drive of the output shaft 2 when the linear motor 2 is stopped.
1 is provided, and a window glass opening / closing position holding mechanism 3 for holding the opening / closing position of the window glass 1 at that time is provided.

Here, as the linear motor 2, a magnet type in which an output shaft 21 as a secondary conductor is alternately magnetized to N poles and S poles is used. Therefore, opening and closing control of the fine window glass 1 can be performed by reducing the magnetization width of the N pole and the S pole.

In this case, a linear motor 2 having a two-shaft configuration having two output shafts 21 is used, and each of the output shafts 21 supports the window glass 1 at two points. The opening and closing can be performed smoothly without any moment acting when pulling down or pushing up.

As the window glass opening / closing position holding mechanism 3, an electromagnetic brake or the like for restraining and releasing the output shaft 21 by turning on / off a power supply is used.

According to the power window device constructed as described above, the output shaft 21 of the linear motor 2 can be used for the window glass 1 without using an output transmission mechanism such as a rod or a link for transmitting the output of the linear motor 1. Since the door is opened and closed directly, the entire structure is simplified, and the door can be installed inside the narrow door with a high space factor. Further, at the time of installation, there is no need to adjust the output transmission mechanism at all, and the window glass 1 can be reliably opened and closed simply by attaching the linear motor 2 in a predetermined manner.

Further, since no output transmission mechanism such as a rod or a link for transmitting the output of the linear motor 1 which causes noise is not used, quietness is ensured in combination with quietness when the linear motor 1 is driven. become able to.

FIG. 2 shows a configuration of a control system of the linear motor 2 and the window glass opening / closing position holding mechanism 3.

Here, a pulser P that generates a pulse signal in synchronization with the forward and backward movements of the output shaft 21 when the linear motor 2 is driven, and the output shaft 21 of the linear motor 2 moves backward to open the window glass 1. Open-direction drive relay RY for turning on and off battery power BAT with polarity
1 and the output shaft 21 of the linear motor 2 move forward to close the window glass 1 with the polarity of the battery power BA.
A closing direction drive relay RY2 for turning on and off T,
A holding relay RY3 for turning on / off the battery power BAT with respect to the window glass opening / closing position holding mechanism 3,
The operation state of the power window operation master switch M / SW provided on the driver's seat side is read to control the energization and de-energization of the opening direction driving relay RY1, the closing direction driving relay RY2, and the holding relay RY3. It is constituted by a control unit ECU that performs an appropriate operation.

When the master switch M / SW is depressed one step in the opening or closing direction and is operated to the manual position M, while the manual operation by the pressing is performed under the control of the control unit ECU, the switching in the opening direction is performed. By switching the control signal OCS or the control signal CCS in the closing direction from the high level to the low level, the relay RY1 for driving in the open direction or the relay RY for driving in the closing direction
By energizing the second relay coil, the output shaft 21 of the linear motor 2 is driven backward or forward to open or close the window glass 1.

When the master switch M / SW is further pushed in the opening or closing direction for an instant to operate to the automatic position A, under the control of the control unit ECU,
Opening direction control signal OCS or closing direction control signal CCS
Is switched from the high level to the low level to energize the relay coil of the open direction drive relay RY1 or the close direction drive relay RY2 to drive the output shaft 21 of the linear motor 2 to move backward or forward. Let
Then, the pulse signal PS generated from the pulser P with the backward or forward movement of the output shaft 21 of the linear motor 2 is read, and the opening direction is controlled until the window glass 1 is fully opened or fully closed and the pulse signal PS is stopped. Signal OC
The control signal CCS in the S or closing direction is maintained at a low level.

When the manual operation of the master switch M / SW is stopped, or when the window glass 1 is fully opened or fully closed by the automatic operation and the driving of the linear motor 2 is stopped, the control unit ECU holds the holding switch. Control signal HCS is switched to the low level state and the relay RY
Energize three. Thereby, the battery power BAT is supplied to the window glass opening / closing position holding mechanism 3, and the output shaft 21 of the linear motor 2 is held.

[0018]

As described above, in the power window device according to the present invention, the linear motor is installed so that the moving direction of the output shaft is the opening and closing direction of the window glass, and the window glass is directly opened and closed by driving the linear motor. Then, when the linear motor is stopped, the output shaft is fixed, and a window glass opening / closing position holding mechanism for holding the opening / closing position of the window glass is provided. It can be installed easily with good space factor inside, and it can ensure quietness in the passenger compartment without generating any operation noise, and improve the positioning accuracy of the window glass. It has the advantage that it can be done.

[Brief description of the drawings]

FIG. 1 is a simplified configuration diagram of a drive mechanism showing an embodiment of a power window device according to the present invention.

FIG. 2 is an electric circuit diagram showing a configuration example of a control system in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Window glass 2 Linear motor 21 Output shaft of linear motor 3 Window glass open / close position holding mechanism M / SW Master switch for power window operation RY1 Relay for opening direction drive RY2 Relay for closing direction drive RY3 Holding relay ECU control unit

Claims (1)

[Claims] A linear motor is installed so that the direction of movement of an output shaft is the opening and closing direction of a window glass, and the window glass is directly opened and closed by driving the linear motor, and then the linear motor is stopped. A power window device configured by providing a window glass opening / closing position holding mechanism that sometimes fixes the output shaft and holds the window glass opening / closing position.