JPH0420141Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic opening/closing device for a ceiling window, which opens and closes a roof cover that closes an opening in a roof by driving a motor in forward and reverse directions.

In this type of conventional automatic ceiling window opening/closing device, when opening and closing the roof cover, the motor is driven in forward or reverse rotation by turning on the operation switch, and when the roof cover reaches the fully open or closed position, the motor is When the driver heard the sound of the clutch slipping, he turned off the opening/closing switch and stopped the motor. Therefore, the operation of opening and closing the roof cover is complicated, and the motor requires a clutch, which inevitably causes unpleasant clutch slipping noise.

Therefore, we have provided a drive wheel that is rotationally driven by a motor that opens and closes the roof cover, and a driven wheel that is intermittently rotated one pitch per rotation by the drive wheel. A closure detection switch that detects when the roof lid is closed and an open detection switch that detects when the roof lid is fully opened are provided. The motor is stopped by the detection operation, and the roof cover can be automatically stopped at the fully open and closed positions, making it easier to open and close the roof cover, and eliminating the need for a motor clutch, which eliminates unpleasant clutch slipping noises. It is possible to eliminate it.

However, in this case, the driven wheel rotates intermittently by one pitch for each rotation of the drive wheel, so
There is no problem if the opening/closing stroke of the roof lid is an integer multiple of the rotation speed of the drive wheel, but if it is less than a decimal point, such as 8.5 rotations, the closure detection switch will detect the closed position of the roof lid. If the driven motor is set to rotate intermittently, the open detection switch must be set to detect when the driven wheel rotates intermittently by 8 pitches (the drive wheel rotates 8 times). For this reason, when opening the roof, the motor stops slightly before the roof is fully opened, making it impossible to accurately stop the roof at the fully open position (scheduled stop position), making it impossible to completely open and close the roof. The problem was that I couldn't do it.

In view of the above-mentioned problems, the purpose of this invention is to make it possible to accurately stop the roof cover at the planned stopping position and to open and close the roof cover easily and reliably. An automatic opening/closing device for a ceiling window is provided with a roof cover that can freely open and close an opening, and the roof cover is opened and closed by forward and reverse driving of a motor. A driven wheel is provided which is intermittently rotated by a predetermined pitch every rotation of the wheel, and a first detection switch detects that the roof cover is in the vicinity of a scheduled stop position based on the rotational position of the driven wheel; A second detection switch is provided for detecting that the roof cover is at a rotational position corresponding to the expected stop position, and a motor stop circuit is provided for stopping the drive of the motor when the first detection switch and the second detection switch simultaneously detect the rotation position. It is at the point.

Hereinafter, the present invention will be explained according to the illustrated embodiments. In FIGS. 1 to 4, 1 is a passenger vehicle;
2 is its roof. Reference numeral 3 denotes a ceiling window provided in the roof 2, which includes an opening 4 formed in the roof 2 and a roof cover 5 that closes the opening 4. This roof cover 5 has an opening 4
It is provided so that it can be moved back and forth to open and close it. For example, a vertically inclined guide groove is provided on the opening/closing actuator that moves back and forth on a guide rail provided on the roof 2, and a sliding pin that slides in the guide groove is provided on a bracket projecting downward from the roof cover 5. The roof cover 5 can be moved up and down by vertically sliding the sliding pin in the guide groove, so that the roof cover 5 is automatically made substantially flush with the roof 2 when it is closed, and is placed inside the roof 2 when it is opened. Configured to move automatically.

Reference numeral 7 denotes an opening/closing drive device for opening and closing the roof cover 5, which is provided at the front of the opening 4, and the drive device 7 and the roof cover 5 are connected via a connection means such as a push cable 8. . This opening/closing drive device 7
has a motor 9 and a feed gear 11 fitted on a rotating shaft 10 connected to the motor 9 via a transmission means such as a worm and a worm wheel, and pushes the rotation of the feed gear 11. Instead of the linear movement of the cable 8, the roof cover 5 is opened and closed by driving the motor 9 in forward and reverse directions. The drive device 7 includes a drive wheel 12 fitted around the rotating shaft 10 and a driven wheel 13 that meshes with the drive wheel 12. Driven wheel 13
is an intermittent gear in which long teeth 14 and short teeth 15 are arranged alternately, one meshing recess 16 that meshes the driving wheel 12 with the long teeth 14 of the driven wheel 13, and a pair of meshing protrusions that mesh with the short teeth 15. 17, and rotates the driven wheel 13 intermittently by one pitch for each rotation of the drive wheel 12. For example, by the time the roof cover 5 is fully opened from the closed state, the drive wheel 1
2 rotates 8.5 times in the direction of arrow a, during which the driven wheel 13 rotates intermittently by 8 pitches in the direction of arrow c, and until the roof cover 5 is fully opened and closed, the drive wheel 12 rotates in the direction of arrow b. 8.5 turns,
The driven wheel 13 is set to rotate intermittently by eight pitches in the direction of arrow d, and the roof cover 5 is closed when the eighth pitch of the intermittent rotation is completed.

A cam 19 is provided integrally with the driven wheel 13, and has a cam protrusion 20 and a cam recess 21 formed on its outer periphery. A cam 22 is provided integrally with the drive wheel 12, and has approximately half a cam convex portion 23 and a half cam concave portion 24 formed on its outer periphery. Reference numeral 25 denotes a closure detection switch, which is turned on while its operating piece 25a is pressed against the cam protrusion 20 and turned off while it is in contact with the cam recess 21. This detection switch 25 is set at a position that corresponds to the cam recess 21 of the driven wheel 13 when the roof cover 5 is closed, and to a position that corresponds to the cam protrusion 20 when the roof cover 5 is opened. According to the rotational position of the driven wheel 13, the closing of the roof cover 5 is detected by the off operation. Reference numeral 26 denotes a first detection switch, which is turned on while its operating piece 26a is pressed against the cam protrusion 20 and turned off while it is in contact with the cam recess 21. This detection switch 26 is connected to the driven wheel 13.
from the rotational position opposite the closing of the roof cover 5 to the arrow c
When the roof cover 5 is rotated 8 pitches in the direction, it is set at a position corresponding to the cam recess 21, and therefore, it is detected by the rotation position of the driven wheel 13 that the roof cover 5 is in the vicinity of the fully open position by the off operation. do. 2
7 is a second detection switch, which is turned on while the operating piece 27a is pressed against the cam protrusion 23 and turned off while it is in contact with the cam recess 24; when the roof cover 5 is fully opened with respect to the cam 22, the cam is turned on. It is set at a position corresponding to the recess 24, and therefore, the second detection switch 27 detects, by turning off, that the drive wheel 12 is at the rotational position corresponding to the expected stop position of the roof cover 5.

FIG. 5 shows a control circuit for controlling the motor 9 in the forward and reverse directions. In the same figure, 30 is an operation switch that interlocks the movable contacts 31a, 31b with each other by pressing or the like, so that the fixed contacts 32a, 32b or the fixed contact 33a, It can be laid down on the 33b side. Reference numeral 34 denotes a relay circuit, which is configured such that a relay switch 36 is turned on by excitation of a relay coil 35 and turned off by demagnetization. 37 and 38 are diodes. Relay circuit 34 and diodes 37, 38
etc., the first and second detection switches 26, 27
A motor stop circuit 39 is configured to stop driving the motor 9 when the simultaneous detection of

According to the configuration of the above embodiment, when the roof cover 5 is closed, the closure detection switch 25 corresponds to the cam recess 21, and the first detection switch 26 corresponds to the cam protrusion 20, as shown in FIG. At the same time, the second
A detection switch 27 corresponds to the cam recess 24, and as shown in FIG. 6, the closure detection switch 25 is off, the first detection switch 26 is on, and the second detection switch 27 is off. In this state, when the movable contacts 31a, 31b of the operation switch 30 are turned toward the fixed contacts 32a, 32b, the relay coil 3
5, the relay switch 36 is turned on by excitation of the coil 35, and as a result, a current flows to the motor 9 in the direction of arrow e, driving the motor 9 in forward (or reverse) rotation. Driven by the motor 9, the roof cover 5 moves rearward to open, and the drive wheel 12 rotates in the direction of arrow a, and the driven wheel 1
3 rotates intermittently by one pitch in the direction of arrow c for each rotation of the drive wheel 12. As a result, the closure detection switch 25 is turned on as shown in FIG.
The first detection switch 26 remains on, and the second detection switch 26 remains on.
The detection switch 27 turns on and off once every rotation of the drive wheel 12. When the drive wheel 12 rotates 8 times in the direction of arrow a and the driven wheel 13 rotates intermittently by 8 pitches in the direction of arrow c, the roof cover 5 reaches the vicinity of the fully open position as shown by the dotted line in FIG. , the first detection switch 26 is turned off, but at this time the second detection switch 27 is turned on corresponding to the cam protrusion 23, so the relay coil 35 continues to be excited and the motor 9 continues to drive. Thereafter, when the drive wheel 12 rotates another half turn in the direction of arrow a and the roof cover 5 is fully opened as shown by the chain line in FIG. 2, the first and second detection switches 26,
27 are both turned off, the relay coil 35 is demagnetized, and the motor 9 stops driving.

Furthermore, when the roof cover 5 is fully open, the movable contacts 31a and 31b of the operation switch 30 are connected to the fixed contact 33.
When it is turned to the a and 33b sides, current flows through the relay coil 35 via the closure detection switch 25, and when the relay switch 36 is turned on, current flows through the motor 9 in the direction of arrow f. As a result, the motor 9 is driven in reverse (or forward), and the roof cover 5 is moved forward to close. When the driven wheel 13 intermittently rotates 8 pitches in the direction of arrow d and the roof cover 5 reaches the closed position, the closure detection switch 25 is turned off, so the relay coil 35 is demagnetized and the motor 9 is stopped. The roof cover 5 stops in the closed position.

Therefore, when the roof lid 5 reaches the closed position and the fully open position when opening and closing the roof lid 5, the motor 9 is automatically stopped accurately, so that the roof lid 5 can be completely opened and closed with a very simple operation. . Further, the motor 9 does not require a clutch, and unpleasant clutch slipping noise can be eliminated, and furthermore, a stopper or the like for stopping the roof cover 5 at the fully open position is also unnecessary.

In the above embodiment, the roof cover 5 is fully opened from the closed position by 8.5 rotations of the drive wheel 12, but the number of rotations until fully opened is not limited to this, and may be 8.4, 8.3,
8.2, . All you have to do is change the set position. Further, the driven wheel 13 may be intermittently rotated by a plurality of pitches each time the drive wheel 12 rotates.

Further, in the embodiment described above, the driven wheel 13 is set to end its intermittent rotation at the closed position of the roof lid 5, and the expected stop position of the roof lid 5 is set to the fully open position. The driven wheel 13 is set to end its intermittent rotation at the fully open position, and the planned stopping position of the roof cover 5 is set as the closed position, and the first detection switch 26 detects when the roof cover 5 has reached the vicinity of the closed position. The second detection switch 27 may detect that the drive wheel 12 is at a rotational position corresponding to the closed position of the roof cover 5. In this case, too, the complete opening and closing of the roof cover 5 may be extremely difficult. This can be done with simple operation and eliminates the need for a clutch. Further, the planned stop position of the roof cover 5 is set to an intermediate position between closed and fully opened, and the first detection switch 26 detects that the roof cover 5 is near the intermediate position, and the second detection switch 27 detects that the roof cover 5 is in the vicinity of the intermediate position. It may be possible to detect that the roof cover 5 is at an intermediate position, and in this way, the roof cover 5 can be moved at the intermediate position without the need for a stopper or the like.
can be stopped automatically and accurately with a simple operation.

According to the present invention, the first detection switch detects that the roof cover is near the planned stop position based on the rotation position of the driven wheel, and the drive wheel is at the rotation position corresponding to the planned stop position of the roof cover. A second detection switch is provided to detect this, and a motor stop circuit is provided to stop driving the motor when the first detection switch and the second detection switch simultaneously detect the problem. The roof cover can be accurately and automatically stopped at the planned stopping position without the need for a clutch or a clutch, and the roof can be opened and closed easily and reliably, which has great practical effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view, FIG. 2 is a side sectional view, FIG. 3 is a perspective view of the opening/closing drive device, FIG. 4 is a plan view of the opening/closing drive device, and FIG. The figure is a circuit diagram, and FIG. 6 is a waveform diagram for explaining the operation. 2...Roof, 3...Ceiling window, 4...Opening, 5
... Roof cover, 9 ... Motor, 12 ... Drive wheel, 13 ... Driven wheel, 26 ... First detection switch, 27 ... Second detection switch, 39 ... Motor stop circuit.

Claims (1)

[Scope of utility model registration request] A roof cover is installed to cover the opening in the roof so that it can be opened and closed.
An automatic opening/closing device for a ceiling window in which a roof cover is opened and closed by forward and reverse driving of a motor includes a drive wheel rotatably driven by the motor, and an intermittent rotation of a predetermined pitch by the drive wheel for each rotation of the wheel. and a driven wheel,
A first detection switch detects that the roof cover is in the vicinity of the planned stop position based on the rotational position of the driven wheel, and a second detection switch detects that the drive wheel is in the rotation position corresponding to the planned stop position of the roof cover. 1. An automatic opening/closing device for a ceiling window, comprising: a detection switch; and a motor stop circuit that stops driving the motor when the first detection switch and the second detection switch simultaneously detect the detection switch.