JPH0443577Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] "Industrial application field" This invention uses an irreversible chain to open and close windows.
This window opening/closing device is equipped with a switch that stops the operation of an electric motor at the open/close position, and relates to a window opening/closing device that allows the window to be manually closed even when an unexpected situation such as a power outage occurs.

"Prior Art" FIG. 14 is a vertical sectional view of a skylight, and FIG. 15 is a longitudinal sectional view of a projecting window. One end of the irreversible chain 3 is fixed to the open end of the shoji 38 whose one side is pivotally connected to the window frame 2 by a hinge 46, and the other end of the irreversible chain 3 is attached to the window frame 2.
It is fixed in a window opening/closing device 1 fixed to The window opening/closing device 1 includes a sprocket foil (not shown), and the irreversible chain 3 is hung on the sprocket foil to move the irreversible chain 3 in and out of the window opening/closing device 1. The sprocket wheel is then driven by an electric motor via a power transmission mechanism.

The electric motor that drives such a window opening/closing device needs to stop operating when the window is opened and when the window is closed.

FIG. 16 is a side view of a window opening/closing stopper that has been widely used in the past.

A runner 48 is screwed into a screw shaft 47 connected to a portion interlocking with the sprocket wheel (not shown). The runner 48 engages with a linear guide member 49 fixed parallel to the screw shaft 47 and
Micro switches 50 and 51 are arranged so that the shoji cannot be rotated with respect to 7, and the shoji is fully opened or closed at the position pushed by the runner 48. When the sprocket wheel rotates, the screw shaft 47 rotates in conjunction, and the runner 48 moves leftward or rightward and presses the microswitches 50, 51, and the signals from the microswitches 50, 51 stop the operation of the electric motor.

``Problems to be Solved by the Invention'' As mentioned above, if a motor control device is provided to operate in conjunction with the sprocket wheel that moves the irreversible chain in and out, it will require a large number of parts and space for installation. There is also the trouble of having to adjust the relative position of the microswitches 50, 51 and the runner 48 so that the electric motor stops operating at the fully open and closed positions of the shoji. In such a window opening/closing device, if the opening/closing positions of the microswitches 50, 51 and the shoji do not match, the electric motor will continue to run in overrun from the open/closed position of the shoji, creating a safety problem for the device and damaging weak parts. There is a risk of damage.
Furthermore, if the electric motor stops operating before the shoji is fully opened or closed, the window may not open sufficiently, or there may be a gap between the window frame and the shoji even after the window is closed, leading to the risk of rain leaking.

Therefore, in order to solve the above-mentioned problems, the present inventor previously proposed in Utility Application No. 59-134623 (hereinafter referred to as the prior art) that uses an irreversible chain to stop the operation of the electric motor when the window is fully open or closed. A window opening/closing device equipped with a control device was proposed.

This prior art is illustrated in the drawings as shown in FIGS. 12 to 13.

FIG. 12 is a side view showing a prior art window opening/closing device, and FIG. 13 is a bottom view of FIG. 12.

In the figure, one end of the irreversible chain 3 housed in the chain case 28 is fixed to a chain stop shaft 40 pivotally connected to the case 28, and the irreversible chain 3 is bent double and attached to the sprocket foil 34 which is supported on the case 28. The other end of the irreversible chain 3 that has come out of the case 28 is fixed to an adapter 39 fixed to a shoji screen, and a dog 41 is fixed to a chain stopper shaft 40.
Switch 42 that operates when the shoji is opened by 1
and a control device in which a dog 45 is fixed to the adapter 39 and a switch 43 is arranged to operate when the shoji is closed by the dog 45, and the operation of the electric motor that drives the sprocket wheel 34 is stopped by the operation of the switches 42 and 43. This is a window opening/closing device equipped with

Although the above-mentioned prior art was able to solve the problems of the prior art described above, a new problem was posed.

In other words, the window opening/closing device of the prior art does not have a means for closing the shoji especially if an unexpected situation such as a power outage or motor trouble occurs while the shoji is not completely closed.

The present invention is an improvement on the above-mentioned prior art.
To provide a window opening/closing device which allows a shoji to be manually closed even when an unexpected situation such as a power outage occurs.

[Structure of the idea]

"Means for Solving Problems" In order to achieve the above-mentioned purpose, this invention adopts the following configuration.

That is, a worm that is integrated with the input shaft, a worm foil that meshes with the worm, a sprocket foil to which the worm wheel is fixed, a sprocket foil that is integrally formed on the shaft, and a sprocket that can be engaged with the sprocket foil to move in and out of the chain case. A chain drive device consisting of an irreversible chain housed in the chain case is operated by an electric motor, and the irreversible chain coming out of the chain case opens and closes a shoji screen fixed to the end of the chain, and also opens and closes a shoji screen fixed to the end of the chain. In an electric window opening/closing device in which the electric motor is stopped by actuation of a switch, a first motor fixed to a manually operated shaft in a gear case is provided between the input shaft of the chain drive device and the output shaft of the electric motor. a transmission shaft including a spiral gear, a second spiral gear that meshes orthogonally with the first spiral gear; a first shaft joint that removably connects one end of the transmission shaft to the output shaft of the electric motor; A second shaft coupling that connects the other end of the transmission shaft to the input shaft of the chain drive device; and a second shaft coupling that is disposed between the transmission shaft and the input shaft in the second shaft coupling and constantly applies a spring force to the transmission shaft in the direction of the output shaft. When the shoji is in the open position, the transmission shaft moves in the axial direction against the biasing force of the spring by rotation of the manual operation shaft, and the connection between the transmission shaft and the output shaft is released. This window opening/closing device is provided with a manual closing device configured to be manually operable.

In the above configuration, the connection portion of the transmission shaft with the first shaft joint and the second shaft joint is formed to have a polygonal cross section, and the connection hole of the first shaft joint and the second shaft joint is connected to the connection portion of the transmission shaft. It has an embodiment in which holes of the same shape are formed to engage with each other.

``Effect'' When an unexpected situation such as a power outage occurs when the shoji is fully opened,
By rotating the manual operation shaft, thrust is generated in the second spiral gear that meshes with the first spiral gear, and the transmission shaft, which is constantly biased by the spring in the direction of the output shaft, resists the biasing force of the spring. Move toward the input shaft (away from the output shaft).

As the transmission shaft moves, the transmission shaft disengages from the first shaft coupling fixed to the output shaft on the motor side, the transmission shaft and the output shaft are disconnected, and the transmission shaft moves in the input shaft direction. The transmission shaft begins to rotate when it comes into contact with a bearing that also serves as a restraining member and no further movement is possible.

The rotation of the transmission shaft operates an input shaft connected to the transmission shaft via a second shaft joint, and a chain drive device interlocked with the input shaft, thereby closing the shoji.

When the shoji is closed, the transmission shaft is always biased by the spring force in the direction of the output shaft within the second shaft joint, so the thrust force acting on the second spiral gear is smaller than the spring biasing force of the spring. Then, the transmission shaft moves in the direction of the output shaft due to the biasing force of the spring, and the transmission shaft engages with the first shaft joint, and the transmission shaft and the output shaft are connected again.

With this connection, after an unexpected situation such as a power outage is resolved, the shoji can be opened and closed by operating the electric motor.

``Example'' An example in which this invention is applied to a skylight will be described below with reference to the drawings.

FIG. 1 is a side view of the window opening/closing device, FIG. 2 is a bottom view of FIG. 1, and FIG. 3 is a side view showing a part of the window opening/closing device on the opposite side. The entire skylight is shown in the vertical sectional view of FIG.

A window opening/closing device 1 is fixed to a window frame 2, and an irreversible chain 3 enters and exits from the top of the window opening/closing device 1. The window frame 2 is the ceiling opening frame 4 of the building.
A base bar 5 having a groove-shaped cross section is fixed to the ceiling opening frame 4 with its flange in contact with the base bar 5. Inside the base bar 5, a reduction motor (hereinafter referred to as an electric motor with a reduction gear) 7 is fixed with machine screws 8, with an output shaft 6 horizontal as a drive shaft on the prime mover side. The output shaft 6 of the reduction motor 7 is connected to a manual closing device 1 fixed to the base bar 5 with machine screws 9.
0, and the manual closing device 10 is connected to an input shaft 13 of a chain drive device 12 which is fixed to the base bar 5 by a machine screw 11.

5A and 5B are enlarged partial sectional side views of the manual closing device, and FIG. 6 is a sectional view taken along the line AA in FIG. 5.

A manual operation shaft 1 equipped with a first spiral gear 15 is located in a gear case 14 fixed to the base bar 5.
6 and a transmission shaft 18 with a second spiral gear 17
The first spiral gear 15 and the second spiral gear 17 are disposed in mesh with each other orthogonally to each other.

The manual operation shaft 16 is supported by flat bearings 19A and 19B fitted into the insertion holes of the gear case 14 at both ends of the first spiral gear 15, and is prevented from moving in the axial direction by the flanges of the flat bearings 19A and 19B. ing. Plain bearing 19 of manual operation shaft 16
The end on the B side is formed to have a hexagonal cross section and protrudes outside the gear case 14.

The transmission shaft 18 is rotatably and axially movably supported by ball bearings 20A and 20B fitted and fixed in the gear case 14, and both ends of the transmission shaft 18 protrude outside the gear case 14. One protruding end of the transmission shaft 18 is connected to a first shaft coupling 21 fixed to the output shaft 6.
and the other end is fixed to the input shaft 13.
Each connection portion of the transmission shaft 18 is connected to the shaft coupling 22 and is formed in hexagonal shaft portions 23 and 24 having a hexagonal cross section.

The first shaft joint 21 fixed to the output shaft 6 is formed with a hexagonal hole 25 that fits into the hexagonal shaft portion 23 of the transmission shaft 18, and the hexagonal shaft portion 23 can be attached to and removed from the first shaft joint 21. Possibly connected.

The second shaft joint 22 fixed to the input shaft 13 has a hexagonal hole 26 that fits into the hexagonal shaft portion 24 of the transmission shaft 18.
is formed, and the hexagonal shaft portion 24 is connected to the hexagonal hole 2.
6 and is movable in the axial direction. hexagonal hole 2
A spring 27 is disposed between the input shaft 13 and the transmission shaft 18 in the output shaft 6, and the spring 27 always urges the transmission shaft 18 in the direction of the output shaft 6.

Fig. 8 is an enlarged side view of the chain drive device, Fig. 9 is a plan view of Fig. 8, Fig. 10 is a sectional view taken along line B-B of Fig. 8, and Fig. 11 is a line C-C of Fig. 9. FIG.

A chain case 28 is fixed to the base bar 5. A worm 29 is integrally formed on the input shaft 13, and the input shaft 13 is supported by ball bearings 30, 30 fitted into a chain case 28. A sprocket foil shaft 32 is fitted into the worm wheel 31 that meshes with the worm 29, and the sprocket foil shaft 32 is fitted with a plain bearing 33A fitted into the case 28.
It is supported by shafts 33B and 33C. Plain bearing 3
A sprocket wheel 34 is integrally formed on a sprocket wheel shaft 32 protruding from the 3C side, and the end thereof is a cylindrical chain receiver 35.

An irreversible chain 3 is hung on the sprocket foil 34, and the irreversible chain 3 passes through an upper opening 36 provided in the case 28 and an opening 37 in the base bar 5, and exits to the outside. An adapter 39 for fixing to the frame 38 is pivotally mounted. The irreversible chain 3 is bent 180 degrees inside the case 28, and the piece at the other end is fixed to a chain stop shaft 40 pivotally attached to the case 28. As shown in FIG. 3, the chain stop shaft 40 protrudes outside the case 28, and a dog 41 serving as a lever is fixed to its end.
is operated by pressing , and the deceleration motor 7 is stopped by a signal from the limit switch 42 via the control device.

A limit switch 43 is fixed on the base bar 5. The adapter 39 at the end of the irreversible chain 3 is offset from the back side of the irreversible chain 3 and fixed to the mounting bracket 44 attached to the frame of the shoji 38 so that the three rows of irreversible chains apply a bending moment to the side where it is difficult to bend. . Adapter 39 has shoji 3
A dog 45 that operates the limit switch 43 when the switch 8 is closed is fixed, and the limit switch 43
When activated, the deceleration motor 7 is stopped via the control device.

Now, when the reduction motor 7 is energized, its output shaft 6 is connected to the hexagonal hole 25 through the first shaft joint 21.
The transmission shaft 18 rotates the second shaft joint 22 through the hexagonal hole 26 engaged with the hexagonal shaft 24, and rotates the input shaft 13. It rotates on bearings 30,30. At this time, the second spiral gear 17 causes the first spiral gear 15 to idle. When the input shaft 13 rotates, the worm 29 rotates and transmits the rotation to the worm wheel 31, and the sprocket wheel shaft 32 is connected to the plain bearing 33.
A, 33B, and 33C to rotate the sprocket wheel 34. Sprocket foil 3
4 rotates counterclockwise in FIG. 8, pulls the lower horizontal portion of the irreversible chain 3, moves it to the right, and extends it upward. The irreversible chain 3 extended upward extends upward through the opening 36 of the case 28 and the opening 37 of the base bar 5, and pushes up the stile of the shoji 38 via the adapter 39 and the mounting bracket 44.
is rotated around the hinge 46 and lifted.

As the lower horizontal irreversible chain 3 inside the case 28 moves to the right, the portion bent 180 degrees upward at its left end also moves to the right, and the overlap between the upper and lower horizontal irreversible chains 3 decreases. , there is no overlap, and the irreversible chain 3 is connected to the chain stop shaft 40.
, and approaches a straight line tangent to the pitch line of the sprocket wheel 34. As the last piece of the irreversible chain 3 rotates, the chain stop shaft 40 rotates counterclockwise in FIG.
As shown in the figure, the dog 41 is rotated clockwise by the chain stop shaft 40, the limit switch 42 is pushed by the dog 41, and this signal stops the deceleration motor 7 via the control device. At this time, the irreversible chain 3 is exposed to the outside through the openings 36 and 37 for the longest time, and the last piece fixed to the chain stop shaft 40 of the irreversible chain 3 and the pieces near this piece pass through the chain stop shaft 40 and connect to the sprocket wheel. 3
It approaches a straight line tangent to pitch line 4 and is near the extension limit position of irreversible chain 3.

When the reduction motor 7 is rotated in the opposite direction to the above-mentioned direction from the open position of the shoji 38 shown by the two-dot chain line in FIG. 7, the sprocket foil 34 rotates clockwise in FIG. The irreversible chain 3 protruding from the outside is drawn into the case 28 and laid down while being stretched horizontally under the case 28. Since the piece at the inner end of the case 28 of the irreversible chain 3 is fixed to the chain stop shaft 40, the chain stop shaft 40 rotates clockwise in FIG. 8, and the dog 41 rotates counterclockwise in FIG. and move away from the limit switch 42. Since the piece fixed to the chain stopper shaft 40 cannot be moved, the irreversible chain 3 extending horizontally under the case 28 is bent 180 degrees upward, and the irreversible chain 3 on the lower horizontal part and the irreversible chain on the upper side are bent. 3 are stored in the case 28 so as to overlap each other.

At the position where the shoji 38 is closed, the dog 45 pushes the limit switch 43, and the signal from the limit switch 43 causes the deceleration motor 7 to stop via the control circuit.

If an unexpected situation such as a power outage occurs while the shoji 38 is open, as shown in FIG. The manual operation shaft 16 protruding outside the gear case 14 is rotated clockwise using an operation stick having a hexagonal hole engaging portion that fits into the hexagonal shaft. Since the reduction motor 7 has a large reduction ratio and requires a large rotational force to rotate in reverse, the output shaft 6 does not rotate, and this rotation generates a thrust in the second spiral gear 17 that meshes with the first spiral gear 15.
The transmission shaft 18 moves in a direction away from the output shaft 6 against the force of the spring 27. Due to the movement of the transmission shaft 18, the hexagonal shaft portion 23 of the transmission shaft 18 and the hexagonal hole 25 of the first shaft joint 21 are disengaged, and the transmission shaft 18 and the output shaft 6 are disengaged.
The connection with is broken. Then, when the second spiral gear 17 comes into contact with the ball bearing 20A, which also serves as a restraining member, and the transmission shaft 18 is no longer able to move in the direction of the input shaft 13, the transmission shaft 18 starts rotating (first Figure 5 b). The rotational force of the transmission shaft 18 is transmitted to the input shaft 13 via the second shaft joint 22 to rotate the worm 29 formed integrally with the input shaft 13, and the worm wheel 3 is engaged with the worm 29.
1 to a sprocket wheel shaft 32 and a sprocket wheel 34 formed integrally with the sprocket wheel shaft 32. The rotational force transmitted to the sprocket foil 34 causes the irreversible chain 3 hung on the sprocket foil 34 to move through the shoji 38.
drive in the direction of closing.

After the shoji 38 has been closed, the transmission shaft 18 is moved by the biasing force of the spring 27 disposed within the second shaft joint 22.
moves in the direction of the output shaft 6, and when the hexagonal shaft portion 23 of the transmission shaft 18 and the hexagonal hole 25 of the first shaft joint 21 match, they engage, and the transmission shaft 18 and the output shaft 6 are connected again. If the hexagonal shaft portion 23 and the hexagonal hole 25 do not match, they will mesh with each other when the reduction motor 7 is started next.

After an unexpected situation such as a power outage is resolved, the rotation of the output shaft 6 is transmitted to the input shaft 13 by the connection between the output shaft 6 and the transmission shaft 18, and the rotation of the output shaft 6 is transmitted to the input shaft 13.
4 to drive the irreversible chain 3.

[Effect of idea]

This invention consists of a first spiral gear fixed to a manual operation shaft in a gear case, and a first spiral gear orthogonal to the first spiral gear, which is fixed to a manual operation shaft in a gear case, between an input shaft of a chain drive device that supports opening and closing of a window, and an output shaft of an electric motor. a transmission shaft including a second spiral gear that meshes with the transmission shaft; a first shaft coupling that removably connects one end of the transmission shaft to the output shaft of the electric motor; and the other end of the transmission shaft to the input shaft of the chain drive device. It consists of a connected second shaft joint and a spring that is placed between the transmission shaft and the input shaft in the second shaft joint and constantly biases the transmission shaft in the direction of the output shaft. A manual closing device is provided which is configured to move the transmission shaft in the axial direction against the biasing force of a spring by rotation of the operating shaft, and to release the connection between the transmission shaft and the output shaft so as to be manually operable. Therefore, the window is normally opened and closed by the operation of the electric motor, and even if an unexpected situation such as a power outage occurs, the window can be closed by the manual closing device. The manual closing device performs the closing operation after disconnecting from the electric motor.
Closing operation is possible with low torque. After an unexpected situation such as a power outage is resolved, when the electric motor is activated to open or close a window, the spring placed in the second shaft joint automatically closes the output shaft of the electric motor and the input of the chain drive device. The shaft is connected. Switching from electric operation to manual operation is performed by moving the transmission shaft in the axial direction.
Since rotation is transmitted from the manual closing device to the input shaft using the transmission shaft, the configuration is simple and the number of parts can be reduced.

[Brief explanation of the drawing]

Figure 1 is a side view of the embodiment of this invention, Figure 2 is a bottom view of Figure 1, Figure 3 is a side view opposite to Figure 1, Figure 4 is a front view of Figure 1, and Figure 4 is a front view of Figure 1. Figures 5A and 5B are partial cross-sectional side views of the manual closing device, Figure 6 is a cross-sectional view taken along line A-A in Figure 5, Figure 7 is a cross-sectional side view of an embodiment of this invention in a skylight, and Figure 8 is a side view of a chain. A side view of the drive device, FIG. 9 is a plan view of FIG. 8, FIG. 10 is a sectional view taken along the line B-B in FIG. 8, and FIG.
12 is a side view of the prior art, FIG. 13 is a bottom view of FIG. 12, and FIG. 14 is a side view of the skylight.
FIG. 15 is a side view of a projecting window, and FIG. 16 is a side view of a conventional electric motor stopping device. 1...Window opening/closing device, 2...Window frame, 3...Irreversible chain, 4...Ceiling opening frame, 5...Base bar,
6... Output shaft, 7... Reduction motor, 10... Manual closing device, 12... Chain drive device, 13... Input shaft, 15... First spiral gear, 16... Manual operation shaft, 17... Second spiral gear, 18...
...Transmission shaft, 21...First shaft joint, 22...Second shaft joint, 23, 24...Hexagonal shaft portion, 25, 26...
Hexagonal hole, 27...spring, 28...chain case,
29...Worm, 31...Worm foil, 3
2... Sprocket foil shaft, 34... Sprocket foil, 38... Shoji, 39... Adapter,
40...Chain stop shaft, 41, 45...Dog,
42, 43... Limit switch, 46... Hinge, 47... Screw shaft, 48... Runner, 49...
Straight guide member, 50, 51...micro switch.

Claims (1)

[Claims for Utility Model Registration] 1. A worm 29 that is integrated with the input shaft 13, a worm wheel 31 that meshes with the worm 29, and a sprocket wheel 34 that is integrally formed with a sprocket wheel shaft 32 to which the worm wheel 31 is fixed. and an irreversible chain 3 which is engaged with the sprocket wheel 34 and is housed in a chain case 28 so as to be able to go in and out. 3, the electric window opening/closing device is configured to open and close a shoji 38 fixed to an end of the shoji 3, and to stop the electric motor 7 in the opening/closing position of the shoji 38 by operating switches 42 and 43. A first spiral gear 1 is fixed to a manual operation shaft 16 in a gear case 14 between an input shaft 13 of a chain drive device 12 and an output shaft 6 of an electric motor 7.
5, a transmission shaft 18 having a second spiral gear 17 meshing orthogonally with the first spiral gear 15, and a first transmission shaft 18 having one end of the transmission shaft 18 removably connected to the output shaft 6 of the electric motor 7. A shaft coupling 21;
a second shaft joint 22 that connects the other end of the transmission shaft 18 to the input shaft 13 of the chain drive device; and a constant transmission shaft 18 disposed between the transmission shaft 18 and the input shaft 13 within the second shaft joint 22. and a spring 27 which applies spring force in the direction of the output shaft 6, and the shoji 3
8, rotation of the manual operation shaft 16 causes the transmission shaft 18 to move in the axial direction against the biasing force of the spring 27, and the connection between the transmission shaft 18 and the output shaft 6 is released, allowing manual operation. 1. A window opening/closing device, characterized in that it is provided with a manual closing device configured to allow it to close. 2. The connection portion of the transmission shaft 18 with the first shaft joint 21 and the second shaft joint 22 is formed to have a polygonal cross section, and the connection holes of the first shaft joint 21 and the second shaft joint 22 are formed in the transmission shaft 18. The window opening/closing device according to claim 1, which is formed in a hole of the same shape that engages with the connecting portion.