JP2005042342A - Power window device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power window device capable of automatically stopping a window pane at an intermediate opening position. <P>SOLUTION: The power window device is so constituted that a magnet 12 is mounted on the window pane W side and, at the same time, that a hall element 14 is mounted on a frame body part 20 side surrounding the window pane W. The power window device is so constituted that the window pane W can be automatically stopped at the intermediate opening position based on a detection signal from the hall element 14 when the window pane W is moved in an openable manner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a power window device for opening and closing a window glass or the like of a vehicle.
[0002]
[Prior art]
Conventionally, as a technique for opening and closing the window glass on the driver's seat side of the vehicle, there is a technique of fully opening or closing the window glass with one touch only by pressing the window opening / closing switch.
[0003]
Such techniques are described in general automobile catalogs.
[0004]
[Problems to be solved by the invention]
However, conventionally, only one kind of window opening / closing operation by one touch can be performed such as full opening and full closing.
[0005]
This is because the end detection of the opening / closing operation of the window glass was detected by the lock current of the opening / closing motor, so that it could not be detected at a position in the middle of opening / closing of the window glass.
[0006]
For this reason, for example, when parking in the summer, open the windows a little to the extent that rain does not blow into the car, and open / close operations to reduce hot air while parking, tickets, cards, charges at the toll booth When opening the window to such an extent that it can be shown or handed, it is necessary to manually adjust the opening / closing amount.
[0007]
Then, the subject of this invention is providing the power window apparatus which can make a window glass stop automatically in an intermediate opening position.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 is a power window device for opening and closing a window material of a vehicle, and is provided in one of the window material and a vehicle body side portion surrounding the window material. A magnetic field generating means, a magnetic detection means for detecting a magnetic field provided on the other of the window material and the vehicle body side portion, and opening / closing control of the window material based on a detection result of the magnetic detection means. And a control means.
[0009]
The invention according to claim 2 is arranged so that the magnetic field generation means and the magnetic detection means are closest to each other in a state in which the window material has moved to a predetermined intermediate opening position, When it is determined that the magnetic field generating means and the magnetic detection means are closest to each other based on the detection result of the magnetic detection means, the opening / closing movement of the window material is stopped.
[0010]
As described in claim 3, a Hall element can be used as the magnetic detection means.
[0011]
According to a fourth aspect of the present invention, the magnetic field generating means is a magnet, and the magnet is detachably attached to one of the window material and the vehicle body side portion, and its attachment position is adjusted. It may be configured to be possible.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a power window device according to an embodiment of the present invention will be described.
[0013]
FIG. 1 is a block diagram showing a power window device. As shown in the figure, this power window device is a device for opening and closing the window material of a vehicle such as a window glass and a sunroof on the side of the car's driving seat. A device for opening and closing the window glass W will be described. This power window device includes a magnet 12 that is a magnetic field generation unit, a Hall element 14 that is a magnetic detection unit, and a window control unit 16 that performs opening / closing control of the window glass W.
[0014]
The magnet 12 is composed of a permanent magnet or the like, and generates a predetermined magnetic field. In the present embodiment, the magnet 12 is attached to the upper part of the rear side of the window glass W. In addition, the attachment position of the magnet 12 is not restricted to this example, What is necessary is just a position which moves with opening and closing of the window glass W.
[0015]
The Hall element 14 detects a magnetic field and outputs the detection result. Here, the Hall element 14 outputs a detection signal having a voltage value corresponding to the strength of the magnetic field.
[0016]
The hall element 14 is attached to a vehicle body side portion surrounding the window glass W. In the present embodiment, the Hall element 14 is a frame portion 20 that surrounds the window glass W, and is attached to an intermediate portion of the frame portion 20 a corresponding to the rear side of the window glass W. The Hall element 14 may be attached to a pillar portion (center pillar or the like) on the vehicle body side.
[0017]
And in the state in which the window glass W is located in a predetermined intermediate opening position (refer to the two-dot chain line in FIGS. 2 and 3), the magnet 12 and the Hall element 14 face each other and are closest to each other. . The intermediate opening position can be set to an arbitrary position such as 10% opening or 60% opening by adjusting the relative positional relationship between the magnet 12 and the Hall element 14.
[0018]
The window control unit 16 is configured by a general microcomputer including a CPU, a ROM, a RAM, and the like, and executes operations to be described later with a software program stored in advance.
[0019]
The window control unit 16 is connected to the Hall element 14 and the input unit 18 and to a motor M via a drive circuit (not shown). The input unit 18 receives an opening operation command and a closing operation command up to an intermediate opening position of the window glass W, which are input by an operator such as a driver. Further, the motor M moves the window glass W in the opening (downward) direction and the closing (upward) direction via a window opening / closing mechanism (not shown).
[0020]
Then, the window control unit 16 performs drive control of the motor M based on the detection signal from the hall element 14 and the operation signal from the input unit 18 to perform opening / closing control of the window glass W.
[0021]
The operation of this power window device will be described.
[0022]
First, an operation of opening the window glass W from the fully closed state to a predetermined intermediate opening position with one touch will be described with reference to FIGS. 2 (a) and 2 (b).
[0023]
In this case, in an initial state where the window glass W is in a fully closed state, the operator inputs an opening operation command to the intermediate opening position through the input unit 18. Then, in response to the command, the window control unit 16 moves the window glass W in the opening (downward) direction by driving the motor M.
[0024]
Here, FIG. 2B shows the relationship between the vertical position H of the window glass W and the detection voltage of the Hall element 14. As shown in the figure, when the window glass W moves from the fully closed state to the open (downward) direction, the detection voltage gradually increases in the initial stage, and the detection voltage is increased with the magnet 12 and the Hall element 14 facing each other. After reaching the maximum value, the detection voltage gradually decreases.
[0025]
Based on the detection signal from the hall element 14, the window control unit 16 confirms that the magnet 12 and the hall element 14 are closest to each other, that is, that the window glass W has reached a predetermined intermediate opening position. Determine. For example, when the voltage value of the detection signal exceeds a predetermined threshold value, or when the voltage value of the detection signal changes from increasing to decreasing, the magnet 12 and the Hall element 14 are closest to each other. Determine.
[0026]
When the window control unit 16 determines that the window glass W has reached the predetermined intermediate opening position, the driving of the motor M is stopped, and the window glass W is stopped at the predetermined intermediate opening position.
[0027]
Next, the operation of closing the window glass W from the fully closed state to a predetermined intermediate opening position with one touch will be described with reference to FIGS. 3 (a) and 3 (b).
[0028]
In this case, in an initial state where the window glass W is in a fully opened state, the operator inputs a closing operation command up to the intermediate opening position through the input unit 18. Then, the window control unit 16 receives the command and moves the window glass W in the closing (upward) direction by driving the motor M.
[0029]
When the window glass W moves from the fully open state to the closed (upward) direction, as shown in FIG. 3B, the detection voltage gradually increases at an initial stage, and the magnet 12 and the hall element 14 face each other. Thus, the detection voltage reaches the maximum value, and then the detection voltage gradually decreases.
[0030]
Based on the detection signal from the hall element 14, the window control unit 16 determines that the magnet 12 and the hall element 14 face each other and are closest to each other, that is, the window glass W is at a predetermined intermediate opening position. It is determined that it has reached.
[0031]
When the window control unit 16 determines that the window glass W has reached the predetermined intermediate opening position, the driving of the motor M is stopped, and the window glass W is stopped at the predetermined intermediate opening position.
[0032]
According to the power window device configured in this way, the strength of the magnetic field detected by the Hall element 14 varies with the opening and closing of the window glass W, so that the window glass is based on the detection result from the Hall element 14. By performing the opening / closing control of W, the window glass W can be automatically stopped at the predetermined intermediate opening position by a one-touch operation.
[0033]
At this time, since the opening / closing movement of the window glass W is stopped when it is determined that the Hall element 14 and the magnet 12 are closest, the window glass W is changed according to the arrangement position of the Hall element 14 and the magnet 12. Can be automatically stopped at a predetermined intermediate opening position.
[0034]
In particular, since the Hall element 14 is used as the magnetic detection means, a small and inexpensive configuration can be realized.
[0035]
In the present embodiment, the magnet 12 is attached to the window glass W side and the hall element 14 is attached to the frame body portion 20 side. Conversely, the hall element 14 is attached to the window glass W side. At the same time, the hall element 14 may be attached to the frame portion 20 side.
[0036]
Further, the magnet 12 may be detachably attached to the window glass W so that the attachment position can be adjusted. Examples of the configuration in which the magnet 12 is detachably attached include a configuration using a double-sided tape or a suction cup.
[0037]
Thereby, the predetermined intermediate opening position can be adjusted according to the user's preference or the like. In particular, the adjustment can be easily performed by changing the attachment position of the magnet 12 that does not require a wiring change.
[0038]
In addition, by adopting a configuration in which the magnet 12 is attached to the window glass W side and the Hall element 14 is attached to the frame body portion 20 side, necessary wiring may be incorporated only in the frame body portion 20. Wiring work can be facilitated.
[0039]
【The invention's effect】
As described above, according to the power window device of the first aspect of the present invention, since the magnetic field detected by the magnetic detection means varies with the opening and closing of the window material, the window material is based on the detection result of the magnetic detection means. By performing the opening / closing control, the window material can be automatically stopped at a predetermined intermediate opening position.
[0040]
According to the power window device of the second aspect, since the opening / closing movement of the window member is stopped when it is determined that the magnetic field generation means and the magnetic detection means are closest, the magnetic field generation means and the magnetic detection The window material can be automatically stopped at the predetermined intermediate opening position according to the arrangement position with the means.
[0041]
According to the third aspect of the invention, since the Hall element is used as the magnetic detection means, a small and inexpensive configuration can be realized.
[0042]
Furthermore, according to the fourth aspect of the present invention, the intermediate opening position of the window material can be easily adjusted by adjusting the attachment position of the magnet without changing the wiring.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a power window device according to an embodiment of the present invention.
FIG. 2 (a) is an explanatory view showing a state in which the window glass is opened to an intermediate opening position, and FIG. 2 (b) is a view showing a relationship between a vertical position of the window glass and a detection voltage.
FIG. 3A is an explanatory diagram showing a state in which the window glass closes to an intermediate opening position, and FIG. 3B is a diagram showing the relationship between the vertical position of the window glass and the detection voltage.
[Explanation of symbols]
12 Magnet 14 Hall element 16 Window control unit 20 Frame part W Window glass

Claims (4)

A power window device for opening and closing a vehicle window material,
Magnetic field generating means provided on one of the window material and the vehicle body side portion surrounding the window material,
A magnetic detection means provided on the other of the window member and the vehicle body side portion for detecting a magnetic field;
A power window device comprising: control means for performing opening / closing control of the window material based on a detection result of the magnetic detection means. The power window device according to claim 1,
In a state where the window material has moved to a predetermined intermediate opening position, the magnetic field generating means and the magnetic detection means are arranged so as to be closest to each other,
The control means includes
A power window device that stops the opening and closing movement of the window member when it is determined that the magnetic field generation unit and the magnetic detection unit are closest to each other based on the detection result of the magnetic detection unit. The power window device according to claim 1 or 2,
The magnetic detection means is a power window device which is a Hall element. The power window device according to any one of claims 1 to 3,
The magnetic field generating means is a magnet,
A power window device in which the magnet is detachably attached to one of the window member and the vehicle body side portion, and the attachment position is adjustable.

Images