JPH1082249A - Power window opening and closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely sense insertion of a foreign matter regardless of acting direction of external forces by disposing a plurality of sensing means along a window frame and providing a closing movement suspending means which suspend the movement of a window body when sensed external forces exceed a predetermined value. SOLUTION: Two pressure sensitive sensors 42, 44 are provided on a weather strip 7. When, during the closing operation of a window glass 2, a foreign matter A is caught between the glass 2 and a forward end 5a of a side visor 5 or between the glass 2 and the strip 7, the sensor 44 senses external forces. And when a foreign matter B is caught, the sensor 42 senses external forces. In addition, when a foreign matter C is caught, both the sensors 42, 44 sense external forces. And in each case, the window glass 2 is closed by a closing movement suspending means. Thus the range for sensing insertion of foreign matters can be expanded and the insertion can be surely sensed regardless of acting directions of external forces.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powered window opening / closing device for a vehicle (for example, a power window), and more particularly to a powered window opening / closing device having a pinch prevention mechanism.

Conventionally, as a power window structure having an anti-jamming mechanism, a sensing means such as a pressure-sensitive sensor for sensing an external force is arranged along a window frame, and an external force caused by a foreign object sandwiched between the window glass and the window frame is reduced. It is known that the detection by this sensing means stops the movement of the window glass in the opening direction. (For example, Japanese Utility Model Laid-Open No. 64-53389)

[0003] However, according to the conventional pinch prevention mechanism, pinch may not be detected even though a foreign substance is pinched between the window glass and the window frame. That is, as shown in FIG. 8, when the foreign matter D is caught between the tip 105 a of the side visor 105 provided along the window frame outside the vehicle compartment and the window glass 102, the window frame 103 (weight Despite the pressure sensor 110 being disposed on the strip, the foreign matter D presses another portion of the window frame 103 (the portion where the pressure sensor 110 is not disposed), and Since the 110 is not pressed, the foreign matter D cannot be detected. If the pressure sensor 110
Can be pressed, a pressing force exceeding a predetermined value cannot be obtained depending on the direction in which the external force acts, and pinching cannot be reliably detected. The above problem occurs significantly as the size of the side visor increases.

Therefore, if it is attempted to detect a foreign object from being trapped in a wide detection range with respect to the direction of action of an external force using a conventional trapping prevention mechanism, the pressure-sensitive sensor itself must be enlarged. However, when the pressure-sensitive sensor is made large, not only is it difficult to dispose the pressure-sensitive sensor on the window frame, but also the rigidity of the pressure-sensitive sensor itself becomes high, and a problem arises that a low entrapment load cannot be reliably detected.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a motorized window opening / closing device capable of reliably detecting pinching irrespective of the direction of action of an external force.

[0006]

According to a first aspect of the present invention, there is provided a power window opening / closing apparatus for opening / closing a window opening (3a) formed by a window frame (3). A body (2), a plurality of sensing sensors (42, 44) arranged along a periphery of the window frame to sense external force, and an external force sensed by at least one of the plurality of sensing sensors And closing movement stopping means (1, 6) for stopping the movement of the window body in the closing direction when the value exceeds a predetermined value.

According to the power window opening / closing device of the first aspect, the plurality of sensing means for sensing the external force are arranged along the window frame. When at least one of the sensing means senses an external force, the window body stops moving in the closing direction. That is, by providing a plurality of sensing means along the window frame, the detectable range of the entrapment in the direction of action of the external force is expanded, and the entrapment can be reliably detected regardless of the direction of action of the external force.

According to a second aspect of the present invention, there is provided a window opening and closing device with a power supply, which is provided along a periphery of the window frame, and a window body for opening and closing a window opening formed by the window frame. A plurality of sensing means for sensing an external force; a window driving means for opening and closing the window body; a driving load detecting means for detecting an overload signal of the window driving means; When,
When the external force detected by at least one of the plurality of sensing means exceeds a predetermined value, and the external force detected by the driving load detection means exceeds a predetermined value, the window body closes. And closing movement stopping means (1, 6) for stopping the movement of the moving object.

According to a second aspect of the present invention, an external force sensed by at least one of the plurality of sensing means exceeds a predetermined value, and an external force sensed by the driving load detecting means. When the value exceeds a predetermined value, the movement of the window body in the closing direction is stopped, so that the detectable range of the entrapment with respect to the direction of action of the external force is widened and no misoperation due to mischief or the like occurs. In addition, it is possible to reliably prevent foreign matter from being caught in the window body.

According to a third aspect of the present invention, in the powered window opening and closing device, the sensing means (42, 44) are arranged at intervals in a direction intersecting the opening and closing direction of the window body (2). It is characterized by having.

According to the third aspect of the present invention, since the sensing means is disposed at intervals in a direction intersecting with the opening and closing direction of the window body, the sensing means is provided with an opening and closing direction of the window body. Entrapment can be reliably detected against the action of external force from different directions.

Further, in the power window opening and closing device according to a fourth aspect, the sensing means (42, 44) are integrally held by flexible insulating members (8, 9, 48). It is characterized by.

According to the fourth aspect of the present invention, since the plurality of sensing means are integrally held by the insulating member, the sensing means can be disposed on the window frame at the same time. Mounting to the frame becomes easy. Further, the distance between the plurality of sensing means can be maintained at a predetermined interval.

Further, the present invention is suitable for a powered window opening / closing device in which a side visor (5) is arranged along a window frame (3).

The reference numerals in parentheses in the above means indicate the correspondence with the concrete means described in the embodiments described later.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a vehicle door provided with a powered window opening / closing device (power window mechanism) having a pinch prevention mechanism. Reference numeral 1 denotes a drive motor that drives a window glass 2 that opens and closes a window opening 3a to move up and down. Is a window frame that defines the window opening 3a. At the periphery of the window frame 3 on the vehicle interior side, pressure-sensitive sensors 42 and 44 (sensing means) for detecting an external force are provided from the front side 3b to the upper side 3c of the window frame 3, respectively. A side visor 5 is attached to a periphery of the window frame 3 on the outer side of the cabin. Incidentally, since the pressure-sensitive sensors 42 and 44 are liable to deteriorate when provided outside the vehicle compartment, they are provided inside the vehicle compartment.

These pressure sensors 42 and 44 have independent pressure sensing functions. That is, the pressure sensor 4
The detection levels 2 and 44 are set to be different from each other. When an external force equal to or more than a predetermined value acts on at least one of the pressure sensors 42 and 44, a pressure signal 42a (44a) is issued. When the pressure-sensitive signal 42a (44a) is issued, the pressure-sensitive signal 42a (44a) is input to the control device 6, and the control device 6 receives the pressure-sensitive signal 42a (44a).
Generates an inversion signal 6a for the drive motor 1 to invert (fall) the window glass 2. With the configuration described above, the closing movement stopping means for stopping the movement of the window glass 2 in the closing direction is configured.

Further, as shown in FIG.
A weather strip 7 is provided along the window frame 3 on the vehicle interior side to seal a gap between the window glass 2 and the window frame 3. Pressure-sensitive sensors 42 and 44 are integrally provided inside the elastic foam 8 made of an insulating member fixed to the weather strip 7 so as to be parallel to each other.

More specifically, pressure-sensitive sensors 42 and 44 are arranged in parallel along the window frame 3 at a predetermined interval in a direction intersecting the opening and closing direction of the window glass 2. And window glass 2
A distance L1 from the sensor to the pressure sensor 42 extending vertically,
The relationship with the distance L2 from the window glass 2 to the pressure sensor 44 extending vertically is L1 <L2. In addition, 7a
Numerals 7b denote a metal core for increasing the mechanical strength of the weather strip 7, and this core is usually bent along the cross-sectional shape of the window frame 3.

The structure of the pressure sensors 42 and 44 will be described below. In the present embodiment, the pressure-sensitive sensors 42 and 44 have different detection levels, but have the same structure, and therefore only the structure of the pressure-sensitive sensor 42 will be described.

As shown in FIG. 3, the pressure-sensitive sensor 42 extends in the longitudinal direction of the tube 41 on the inner peripheral wall of a long tube 41 made of a flexible insulating material.
Two strip-shaped electrodes 43 and 45 made of a conductive rubber material facing each other at a predetermined distance in a tube 41 are provided.

A gap 46 is formed between the opposing surfaces 43a and 45a of the two strip-shaped electrodes 43 and 45 to form an insulating portion. A predetermined voltage is applied between the two band-shaped plate electrodes 43 and 45, and when an external force exceeding a predetermined value acts, the tube 41 is deformed.
a and 45a come into contact with each other. Then, the opposing surfaces 43a, 45a
Are brought into contact with each other and the pressure-sensitive signal 42a is emitted. Similarly, when an external force equal to or more than a predetermined value acts on the pressure-sensitive sensor 44, the pressure-sensitive signal 44a is generated.

The tubes 4 of the pressure-sensitive sensors 42, 44
1 is abolished and both strip-shaped electrodes 43,
45 may be integrally arranged.

Next, the features of this embodiment will be described. According to this embodiment, the weather strip 7 is provided with two pressure-sensitive sensors 42 and 44 in parallel along the window frame 3. Then, when at least one of the pressure-sensitive sensors 42 and 44 detects an external force, a pressure-sensitive signal is issued to the control device 6 so as to stop the movement of the window glass 2 in the closing direction.

That is, as shown in FIG. 4, while the window glass 2 is being closed, the window glass 2 and the tip 5a of the side visor 5 are closed.
When the foreign matter A is sandwiched between the window glass 2 and the weather strip 7 (elastic foam 8), the pressure-sensitive sensor 44 detects an external force, and the window movement 2 is opened by the closing movement stopping means described above.

When foreign matter B is caught between the window glass 2 and the weather strip 7 (elastic foam 8) during the closing operation of the window glass 2, the pressure-sensitive tube sensor 42 detects an external force. The window glass 2 is opened by the closing movement stopping means.

Further, the window glass 2 and the weather strip 7
When the foreign matter C is trapped between the window glass 2 and the pressure-sensitive tube sensors 42 and 44, the window glass 2 is opened by the closing movement stopping means.

That is, two pressure-sensitive sensors 4 along the window frame 3
By providing the components 2 and 44, the detectable range of the foreign object entrapment is widened. Therefore, even when the side visor 5 is attached to the window frame 3 outside the vehicle compartment, the entrapment is reliably performed regardless of the direction of the external force. Can be detected.

Further, as in the present embodiment, since the two pressure-sensitive sensors 42 and 44 are arranged in the weather strip 7, the interval between the pressure-sensitive sensors 42 and 44 can be maintained at a predetermined interval. And easy to install.

Further, as shown in FIG. 5, when the pressure-sensitive sensors 42 and 44 are directly mounted on the window frame 3 without using a weather strip, a flexible insulating member or the like (elastic rubber 9).
The pressure-sensitive sensors 42 and 44 are integrally held, and a part of the elastic rubber 9 is fixed to the metal core 7c with the screw 10 or the like so that the elastic rubber 9 can be easily attached to the window frame 3 side. Further, the elastic rubber 9 may be fixed to the core 7c with an adhesive. Further, as shown in FIG. 6, the pressure-sensitive sensors 42 and 44 may be integrally held by a tube 48 and housed in the elastic rubber 11.

[Second Embodiment] Next, a second embodiment of the present invention will be described. The same members as those in the first embodiment are denoted by the same reference numerals. FIG. 7 shows the overall structure of a powered window opening / closing device according to the second embodiment. In the figure, a drive motor 1 for driving a window glass 2 up and down is provided in a vehicle door, and the forward / reverse rotation of the drive motor 1 is changed by changing a polarity of a current supplied to a motor terminal by a motor reversing circuit 60 a forming a control device 6. It is done by doing. The drive motor 1 is provided with a speed sensor 12 (drive load detecting means) for detecting the speed of the drive motor 1, and an overload signal 1 a from the speed sensor 12 is input to an AND gate 51. Yes,
The overload signal 1a is issued when the rotation speed of the drive motor 1 falls below a predetermined value. Reference numeral 5 denotes a side visor.

On the other hand, two pressure-sensitive sensors 42 and 44 are laid in parallel in the weather strip 7 on the vehicle interior side of the vehicle door. The pressure sensor signals 42 a and 44 a from these pressure sensors 42 and 44 are input to the OR gate 50. The output signal from the OR gate 50 is input to the AND gate 51.

Further, a window closing signal 61a is input to the AND gate 51. This window closing signal 61a
Is emitted, for example, depending on the polarity of the motor terminal when the motor rotates forward (window glass closing direction). The output of the AND gate 51 is input to a control circuit 60b constituting the control device 6. The control circuit 60b includes an operation switch 80
The motor inverting circuit 60a is operated in response to the command of the above, and the motor inverting circuit 60a rotates the motor 1 forward and backward by appropriately switching the polarity of the DC voltage from the battery 70 and applying the polarity to the drive motor 1.

Then, the control circuit 60b
When the output signal from the AND gate 51 is input, that is, during the window glass closing operation, the two pressure-sensitive sensors 4
When an output signal (pressure-sensitive sensor signal 42a or 44a) is issued from at least one of the signals 2 and 44 and the motor overload signal 1a is issued, a command signal is immediately sent to the control circuit 60b, and the motor inversion circuit is output. 60a
To the drive motor 1 via the control unit 1 to cause the drive motor 1 to reverse in the window opening direction.

According to the second embodiment, the output is confirmed from the AND condition of at least one pressure-sensitive sensor signal and the motor overload signal only during the closing operation of the window glass. In addition to increasing the detectable range of entrapment, there is no malfunction due to mischief, etc.
It is possible to reliably prevent foreign matter from being caught in the window glass.

In the above-described embodiment, an example has been described in which the two pressure-sensitive sensors 42 and 44 are disposed in parallel along the window frame (weather strip). However, the present invention is not limited to this. The number of pressure sensors according to the range of
The number may be one or more, and the number of pressure-sensitive sensors is not particularly limited. Also, the pressure sensors 42, 44
Are different, but they may be set to the same detection level.

Each pressure-sensitive sensor 4 in the window opening / closing direction
The mounting angle of the pressure-sensitive sensors 2 and 44 and the distance between the pressure-sensitive sensors 42 and 44 may be appropriately changed along the window frame, thereby changing the range of the pressure-sensitive detection angle at various points along the window frame. be able to.

Further, the present invention is not limited to a sensor of a type in which an external force is detected by conduction between opposed strip-shaped electrodes 43 and 45, such as the pressure-sensitive sensor 42, and a type in which an internal resistance is changed by the action of an external force. A resistance change type pressure sensor may be used, or a type of pressure sensor that detects an external force by a change in internal pressure may be used, and various known pressure sensors can be applied. The structure is not particularly limited.

[0039]

As described above, the powered window opening / closing device of the present invention has a configuration in which a plurality of pressure-sensitive sensors are provided along the window frame, so that the detectable range of foreign object entrapment is expanded,
It has an excellent effect that pinching can be reliably detected regardless of the direction of action of an external force.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a power window mechanism according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line DD of FIG.

FIG. 3 is a perspective view of a pressure-sensitive sensor constituting a sensing unit.

FIG. 4 is a cross-sectional view showing a state in which a foreign object is sandwiched.

FIG. 5 is a sectional view showing another example of the first embodiment.

FIG. 6 is a sectional view showing a modification of FIG. 5;

FIG. 7 is a schematic view showing a power window mechanism according to a second embodiment of the present invention.

FIG. 8 is a schematic view showing a conventional power window mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Drive motor (window drive means, closing movement stopping means) 2 Window glass (window body) 3 Window frame 3a Window opening 6 Control device (closing movement stopping means) 7 Weather strip (window frame) 8 Elastic foam (insulation) 9) Elastic rubber (insulating member) 12 Rotation speed sensor (drive load detecting means) 42 Pressure sensitive sensor (sensing means) 44 Pressure sensitive sensor (sensing means)

Claims (5)

[Claims] 1. A window body (2) for opening and closing a window opening (3a) formed by a window frame (3), and a plurality of sensing means (42) arranged along the periphery of the window frame to sense external force. Closing movement stopping means (1) for stopping movement of the window body in the closing direction when an external force sensed by at least one of the plurality of sensing means exceeds a predetermined value. ,
6) A powered window opening and closing device characterized by having: 2. A window body (2) for opening and closing a window opening (3a) formed by a window frame (3), and a plurality of sensing means (42) arranged along the periphery of the window frame for sensing external force. , 44), a window body driving means (1) for opening and closing the window body, a driving load detecting means (12) for detecting an overload signal of the window body driving means, and a plurality of the sensing means. When the external force detected by at least one of the sensing means exceeds a predetermined value and the external force detected by the driving load detecting means exceeds a predetermined value, the closing movement of the window body is stopped in the closing direction. A powered window opening and closing device comprising means (1, 6). 3. The sensing means (42, 44) is arranged at intervals in a direction intersecting the opening / closing direction of the window body (2). 2. A power window opening / closing device according to item 2. 4. The sensor according to claim 1, wherein said sensing means is integrally held by a flexible insulating member. Powered window opener. 5. A side visor (5) arranged along the window frame (3) on the side opposite to the side on which the sensing means (42, 44) is provided with respect to the window body (2). The powered window opening and closing device according to claim 1, further comprising: