JPH10317798A - Opening and closing device for electric window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the manual opening and closing operations by driving a window member energized by a window balance device to such an extent that it stops due to friction force through a magnet clutch connected only when power is conducted to a motor. SOLUTION: A window balance device 3 which energizes an output lever 2 in the upward direction at all times is provided on a rear surface side of a frame 1, and a drive part 4 provided with a motor M which drives the output lever 2 in a reciprocating manner and a worm decelerator G is provided on a surface side thereof. Preferably, energizing force of the window balance device 3 is such an extent that it supports the weight of a window member. An electromagnetic clutch 6 is provided on the halfway of a power transmission path from the motor M to the output lever 2. A roller 12 rolls or slides in a horizontal guide 13 to drive the window member 11 vertically. A controller turns 'ON' the power transmission of the electromagnetic clutch 6 when the motor M is rotated in both forward and reverse directions. Consequently, it is possible to open and close the window member 11 manually and freely, even if the motor M stops during the automatic operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric window opening and closing device. More specifically, the present invention relates to a device for electrically opening and closing a vehicle such as a train or a window that slides up and down a building, that is, a so-called power window driving device.

[0002]

2. Description of the Related Art A general electric window opening / closing device includes a motor, a speed reducer connected to an output shaft of the motor, and a mechanism for converting an output of the speed reducer into a vertical movement of the window. Therefore, the resistance of the speed reducer is large, and the window cannot be opened and closed manually. Therefore, conventionally, a window opening / closing device capable of coexisting electric drive and manual operation has been proposed.

For example, the opening / closing device described in Japanese Patent Application Laid-Open No. 7-229362 has a first cam consisting of a fan-shaped projection attached to a lever for driving a window member, and a fan-shaped recess connected to a speed reducer. The second cam and the second cam are provided concentrically, and a play at a predetermined angle is provided between the two. When the window is opened or closed by motor drive, the first cam is rotated by an amount corresponding to the play, and then the opening / closing drive operation is actually performed. When the operation is completed and a stop signal is output, the second cam is rotated in the reverse direction to allow play between the two cams and then stopped to prepare for manual operation.

[0004]

In the above window opening / closing device, when the motor stops during the ascending (or descending) driving, the motor is restrained by the second cam. Or rise). Therefore, in the case where an object or a human body is pinched during the automatic full closing operation, the pinched object cannot be extracted without operating a switch for rotating the motor in the reverse direction.

Also, since the reduction ratio is large, the resistance on the window side does not impose a large burden on the motor side.
Even in FF, the motor overruns due to inertia. Therefore, at positions other than the upper and lower ends, even if the switch is turned off, the window member moves up and down somewhat, and it is difficult to accurately stop the window member at a desired position.

SUMMARY OF THE INVENTION It is a first object of the present invention to provide a motorized window opening / closing device which can be manually opened / closed even if a motor stops halfway. A second object of the present invention is to provide an electric window opening / closing device in which overrun of the window member is small when the power of the motor is turned off.

[0007]

SUMMARY OF THE INVENTION An electric window opening / closing apparatus according to the present invention comprises a motor, a controller for controlling the motor, an output member driven by the motor, and a rotational movement of the output member. A conversion mechanism for converting the reciprocating sliding motion of the member, a balance means for urging in a direction to reduce the weight of the window member, an electromagnetic clutch interposed between the motor and the output member, and an electromagnetic clutch for rotating the motor. It is characterized in that it is provided with means for performing connection by a clutch and disconnecting when stopping, and means for holding the window member in that position when disconnecting the electromagnetic clutch.

In such an opening and closing device, the output member is a swinging member that reciprocates at an angle corresponding to the opening and closing position of the window, and the conversion mechanism is an output unit integrally connected to the swinging member. It can be constituted by a lever and a mechanism for extracting a vertical component of the circular motion of the free end of the output lever. Preferably, the balance means is a window balancer connected to a swing member or an output lever so as to bias the output lever in a direction to raise the window. The "window balancer" referred to herein and the "window balancer" recited in claim 3 are provided with a "spring as a means for urging the window upward" described in Japanese Utility Model Publication No. 31-3268. And a window balancer provided with a link mechanism for reducing the fluctuation of the urging force due to the stroke of the spring. " It is preferable that a controller for controlling the motor is provided with a circuit for stopping the motor when a current flowing through the motor exceeds a predetermined value.

[0009]

When the window member is moved up and down by the motor, the motor side and the output member side are connected by the electromagnetic clutch. Thereby, the rotation of the motor is transmitted to the output member via the electromagnetic clutch. Further, the rotational movement of the output member is converted into a vertical movement of the window member by the conversion mechanism, and the window member moves up and down. When the motor is stopped, the connection is disconnected by the electromagnetic clutch. Therefore, thereafter, the restriction by the motor side is eliminated, and the window member can be freely opened and closed manually. Also, since the connection by the electromagnetic clutch is broken,
Even if the motor side overruns, it does not reach the output member side. Further, the window member is stopped at that position by the position holding means and does not overrun.

Further, since the weight of the window member is reduced by the balance means, the load does not fluctuate greatly when the motor is rotated in any direction. Furthermore, even when the opening / closing operation is manually performed, that is, even when the electromagnetic clutch is disengaged, the operation can be easily performed for the same reason. Also,
Since the balance means is also used, the force for operating the window can be reduced. Therefore, it is possible to reduce the output torque of the motor, so that safety can be ensured even when a hand or the like is pinched.

In the case where the output member is the swinging member and the conversion mechanism is a mechanism having the output lever, a screw
The structure can be made more compact than when a nut mechanism or a rack-pinion mechanism is used. Further, the compatibility with the window balancer described in Japanese Utility Model Publication No. 31-3268 is good. 31-3
In the case of the window balancer described in Japanese Patent Publication No. 268, there is an advantage that the fluctuation of the urging force due to the position of the window member is small. When a circuit for stopping the motor is provided in the controller for controlling the motor when the current flowing through the motor exceeds a predetermined value, the operation is immediately switched to the manual operation even when the pinching occurs during the automatic operation. So immediately push the window open,
You can pull out the sandwiched object.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway front view showing an embodiment of a window opening / closing device according to the present invention.
2a and 2b are a schematic front view and a schematic side view, respectively, showing a state where the opening and closing device is attached to a window, FIG. 3 is a partially cutaway front view showing one embodiment of a balance means according to the present invention, and FIG. FIG. 5 is a front view showing a drive unit of the opening / closing device of FIG. 1, and FIG. 6 is a VI-V of FIG.
7 is an enlarged sectional view of the electromagnetic clutch of FIG.

First, an entire window opening / closing device A will be described with reference to FIG. The opening / closing device A of FIG. 1 includes a frame 1 disposed below a window frame of a vehicle, and an output lever 2 that is swingably attached to the back side of the frame 1. Further, a window balancer (balance means) 3 for constantly urging the output lever 2 upward (counterclockwise in FIG. 1) is provided on the back side of the frame 1, and the output lever is provided on the front side. 2
M and worm reducer G for reciprocating drive
Is provided. Further, a speed reduction mechanism 5 is provided between the worm speed reducer G and the output lever 2, and the power transmission is turned on and off in the middle of the speed reduction mechanism 5, that is, in the power transmission path from the motor M to the output lever 2. An electromagnetic clutch 6 is interposed.

As shown in FIGS. 2A and 2B, the opening / closing device A is provided below a window 8 of a vehicle such as a train, and a seat 9 is provided.
Housed inside. On the window frame 10, a window member 11 having a window glass is slidably held up and down. A roller 12 is rotatably provided at the tip of the output lever 2 so that the roller 12 rolls or slides in a horizontal guide 13 extending horizontally at the lower end of the window member 11 (see FIG. 4). . Thereby, when the output lever 2 rotates in the directions of the arrows P1 and P2, the window member 11 is driven up and down by the vertical component of the arc-shaped trajectory. That is, the roller 12 and the horizontal guide 13 of the output lever 2 are an embodiment of the "mechanism for extracting the vertical component of the circular movement of the free end of the output lever" in claim 2.

In this embodiment, the window balancer described in Japanese Utility Model Publication No. 31-3268 is used as the window balancer 3 described above. As shown in FIG. 3, the biasing force in the linear direction of the tension spring 18 is applied to the link mechanism 19 as shown in FIG.
Thus, the torque of the small lever 25 coupled to the output lever 2 via the output shaft 30 is converted into a biasing force. This has the advantage that even if the tension changes in accordance with the extension of the tension spring 18, the force for urging the window member upward by the action of the link mechanism 19 does not change much.

The urging force of the window balancer 3 is preferably such that it just supports the weight of the window member. That is, if the balance force is too large, the window member (reference numeral 11 in FIG. 2A) will rise when the electromagnetic clutch is disengaged, and if it is too small, it will fall. Therefore, even when the balance force fluctuates, the window member 11 is moved to the window frame 10 with the electromagnetic clutch disengaged.
It is preferable that the distance fluctuates within a range in which the rotation is stopped by the frictional force received from the motor. In such a case, a window frame or the like that generates the frictional force serves as the position holding means.

In the present embodiment, as shown in FIGS. 2B and 4, a drive unit 4 is provided on the front side of the window balancer 3. That is, the end of the output shaft 30 protrudes from the surface side of the box-shaped frame 20 of the window balancer 3, and the drive unit 4 for reciprocating the output shaft 30 is attached. Therefore, the window balancer 3 and the drive unit 4 are housed in the seat (reference numeral 9 in FIG. 2B) almost integrally. Therefore, the installation space is small.

As shown in FIG. 5, the drive unit 4 includes a motor M
And a known worm reducer G connected to the output shaft of the motor M. As shown in FIGS. 6 and 1, the motor M and the worm gear reducer G are mounted on a first base plate 31 that is installed at an interval in parallel with the frame 1 of the drive unit 4.

In FIG. 6, a first gear 34 is fixed to the output shaft 33 of the worm speed reducer G, and the first gear 34 is disposed between the first base plate 31 and the frame 1. The first gear 34 meshes with a second gear 35 which is also arranged between the first base plate 31 and the frame 1. The second gear 35 is, for example, a shaft 3 supported by the frame 1 and the first base plate 31.
6 is rotatably supported. Further, the electromagnetic clutch 6 is attached to the second base plate 49,
The second gear 35 is a large-diameter third gear 38 attached to a first armature 37 on the slide side of the electromagnetic clutch 6.
And are engaged.

A small diameter fourth gear 42 is fixed to the end of a rotating shaft 41 fixed to the second armature 40 of the electromagnetic clutch 6. The fourth gear 42 is in mesh with the fifth gear 44. The fifth gear 44 is the frame 1
Is rotatably supported by a shaft 45 attached to the shaft. The fifth gear 44 is integrally connected to a sixth gear 46 having a smaller diameter, and the sixth gear meshes with a seventh gear or an output gear 48 fixed to the output shaft 30.

As shown in FIG. 5, the third gear 38 has a larger diameter than the first gear 34. The second gear 35 is an idle gear. The fourth gear 42 has a smaller diameter than the third gear 38, because the fourth gear 42 rotates together with the third gear 38 when the clutch is "engaged". 5th gear 4
4 has a larger diameter than the fourth gear 42 that meshes with it. The sixth gear 46 co-rotating with the fifth gear 44 has a smaller diameter than the fifth gear 44 as described above. Further, the sixth gear 46
The output gear 48 meshing with the second gear 46 has a larger diameter than the sixth gear 46. In this manner, the gear train from the first gear 34 to the seventh gear 48 constitutes the speed reduction mechanism 5 that reduces the speed by meshing with each other.

As shown in FIGS. 1 and 6, the electromagnetic clutch 6 is held between the second base plate 49 and the frame 1, and the fifth gear 44 and the sixth gear 46 are connected to the third base plate 49a and the frame 1 Held between. Further, as shown in FIG. 1, a fan-shaped cam 50 is fixed to the seventh gear 48. This cam 50 detects the position of the output lever 2 by engaging with the limit switch LS,
This is for stopping at a predetermined window opening position.

As shown in FIG. 7, when the electromagnetic clutch 6 is not energized to the coil 57, the second armature 4
Since the magnetic force does not work between the first armature 37 and the first armature 37, the two are separated from each other with the friction surface B interposed therebetween, or at least are not in contact with a strong contact force. As a result, the rotating shaft 41 becomes free from the third gear 38 and rotates freely. That is, the power transmission by the clutch is turned off. Therefore, the window member 11 shown in FIG. 2A can be freely moved up and down manually without being hindered by the resistance of the motor M and the worm reducer G.

On the other hand, when the coil 57 is energized, the first armature 37 is strongly attracted to the second armature 40. Therefore, the first armature 37 and the second armature 40 are connected at the friction surface B where they contact each other,
The clutch is turned on. Thereby, the torque of the large-diameter third gear 38 is transmitted to the second armature 40 via the three small screws 60 and the first armature 37, and transmitted to the small-diameter fourth gear 42 via the rotating shaft 41. . Therefore, the fourth gear 42 rotates, and the window member 1 by the motor M is rotated.
1 can be performed.

As described above, in the present embodiment, the window member 11 can be manually operated in a state where power is not supplied. Therefore, if a failure occurs in the electric system or a power failure occurs, At times, the windows can be manually opened and closed. In addition, since a friction clutch is used, the on / off operation is smooth, and safety is ensured by slipping even when an object is sandwiched.

A conventionally known controller can be used as the controller for controlling the "ON" and "OFF" of the motor M. The controller controls the transmission of the power of the electromagnetic clutch to “O” while rotating the motor M in both the forward and reverse directions.
N ", and a circuit for turning off the electromagnetic clutch when the drive current of the motor M is turned" OFF ".
Further, a safety circuit is provided which detects the drive current of the motor M and turns off the drive current when the drive current exceeds a predetermined upper limit. Thereby, when the pinch occurs in the window member, the motor stops and the electromagnetic clutch is disengaged at the same time, so that the pinch can be easily released.

In the above-described embodiment, the window balancer described in Japanese Utility Model Publication No. 31-3268 is used as the balance means, but other balance means such as a tension coil spring may be used. 5 and 6, the worm speed reducer G and the output shaft 30 are all connected by a reduction mechanism 5 using gears.
The output gear 48 and the output gear 48 may be connected by a chain and a sprocket, or they may be connected by a conductive belt as a pulley. This applies to the connection between the other gears. Further, instead of the worm reducer G connected to the motor M, another type of reducer such as a planetary gear reducer may be employed.

[0028]

According to the electric window opening and closing device of the present invention, when the window member is moved up and down by the motor, the motor side and the output member side are connected by the electromagnetic clutch, and when the motor is stopped, the electromagnetic clutch is used. The connection is broken. Therefore, even when the motor stops during the automatic operation, the restriction by the motor and the speed reducer is eliminated, and the window member can be freely opened and closed manually. Therefore, even if pinching occurs, it can be easily released manually. Also, even if the motor side overruns, it is not transmitted to the output member side because the connection is broken. Therefore, the window member is stopped at that position by the position holding means and does not overrun.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a window opening / closing device according to the present invention.

FIGS. 2A and 2B are a schematic front view and a schematic side view showing a state where the opening and closing device is attached to a window, respectively.

FIG. 3 is a partially cutaway front view showing an embodiment of a balance unit according to the present invention.

FIG. 4 is a side view of the balance means.

FIG. 5 is a front view showing a driving unit of the switching device of FIG. 1;

6 is a sectional view taken along line VI-VI of FIG.

FIG. 7 is an enlarged sectional view of the clutch shown in FIG. 6;

[Explanation of symbols]

 Reference Signs List A Opening / closing device 2 Output lever 3 Window balancer 4 Drive unit 5 Reduction mechanism 6 Electromagnetic clutch 11 Window member 12 Roller 13 Horizontal guide M Motor G Worm reduction gear

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teradachu Nakazawa 3-9-60 Inadashinmachi, Higashiosaka-shi, Osaka Inside Kinki Vehicle Co., Ltd. (72) Inventor Shinichi Otsuji 3-chome Inadashinmachi, Higashi-Osaka-shi, Osaka No. 9-60 Kinki Vehicle Co., Ltd.

Claims (4)

[Claims] 1. A device for electrically opening and closing a window member sliding up and down in a window of a vehicle or the like, comprising a motor, a controller for controlling the motor, an output member rotationally driven by the motor, and an output of the motor. A conversion mechanism for converting the rotational movement of the member into a reciprocating sliding movement of the window member, a balance means for urging the window member in a direction to reduce the weight, an electromagnetic clutch interposed between the motor and the output member, and the motor A motor-operated window, comprising: means for performing connection by an electromagnetic clutch when rotating the motor; disconnecting the connection when stopping; and means for holding the window member in that position when the electromagnetic clutch is disconnected. Switchgear. 2. The output member, wherein the output member is a swing member that reciprocates and rotates between angles corresponding to an opening and closing position of a window, the output mechanism having the conversion mechanism integrally coupled to the swing member, and an output lever. 2. The window opening and closing device according to claim 1, further comprising a mechanism for extracting a vertical component of the arc-shaped movement of the free end of the lever. 3. The window opening / closing device according to claim 2, wherein the balance means is a window balancer connected to the swing member or the output lever so as to bias the output lever in a direction to raise the window. 4. A controller for controlling the motor,
The window opening and closing device according to claim 1, further comprising a circuit that stops the motor when a current flowing through the motor exceeds a predetermined value.