JPH0355736Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] "Industrial Application Field" This invention relates to a control device that uses an irreversible chain to stop an electric motor at the opening/closing position of a device for opening and closing a window.

"Prior Art" FIG. 10 is a vertical cross-sectional view of a skylight, and FIG. 11 is a longitudinal sectional view of a projecting window. An irreversible chain 3 is fixed to the open end of the shoji 25, whose one side is pivotally connected to the window frame 2 by a hinge 36, so as to form an arc in a direction away from the hinge 36 and become rigid, and the other end of the irreversible chain 3 is fixed in a window opening/closing device 1 fixed to a window frame 2 which accommodates an irreversible chain 3 and can be taken in and out. The window opening/closing device 1 is equipped with a sprocket foil (not shown), and an irreversible chain 3 is attached to the sprocket foil.
is applied 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 be stopped when the window is opened and when the window is closed.

FIG. 12 is a side view of a window opening/closing stopper that has been widely used in the past. A screw shaft 37 connected to a portion of the drive system of the sprocket wheel (not shown), on which the irreversible chain 3 is hung, that interlocks with the sprocket wheel is supported by bearing frames 38 on both sides. Both ends of a linear guide member 39 parallel to the screw shaft 37 are fixed to the bearing frame 38 by machine screws 41. Runner 42 screwed into screw shaft 37
is engaged with the linear guide member 39 and cannot be rotated about the screw shaft 37. Micro switches 43 and 44 are placed at the position pressed by the runner 42.
are arranged.

When the sprocket wheel on which the irreversible chain 3 of the window opening/closing device is hung rotates, the screw shaft 37 rotates in conjunction, and the runner 42 moves. For example, shoji 2
When the electric motor is energized in the direction in which the window 5 is opened, the runner 42 moves to the left and the window is fully opened at the position where the micro switch 43 is pressed, and the electric motor is stopped by the signal from the micro switch 43. When the electric motor is energized in the direction to close the shoji, the runner 42 moves to the right and the window is closed at the position where the micro switch 44 is pressed, and the electric motor is stopped by the signal from the micro switch 44.

``Problems to be solved by the invention'' If a control device for the electric motor is provided in conjunction with the sprocket wheel for moving in and out the irreversible chain on which the irreversible chain is hung as described above, the number of parts will be large and the installation space will be limited. will also be required. The relative position of the micro-switches 43, 44 and the runner 42 is adjusted so that the electric motor stops at the position where the shoji is completely open, that is, the position where the irreversible chain is fully extended, and the electric motor stops at the position where the shoji is completely closed. There are some hassles that need to be adjusted.
In such a window opening/closing device, if the opening/closing positions of the microswitches 43, 44 and the shoji 25 do not match, if the electric motor is operated in overrun from the open/closed position of the shoji, the safety of the device will be compromised and weak parts will be damaged. There is a risk of damage, and if the motor stops 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, causing rain to leak. There is a risk that this may occur.

The object of this invention is to provide a window opening/closing device using an irreversible chain, which is equipped with an electric motor stop control device that can operate easily and accurately without adjustment when the window is in the open position.

[Structure of the idea]

``Means for solving the problem'' This idea allows an irreversible chain housed in a case to be moved in and out of the case, and the end of the irreversible chain that protrudes outside the case is fixed to a shoji screen, which operates when the shoji opens. In a window opening/closing device equipped with a switch that operates when a switch or a shoji is closed, one end of an irreversible chain is fixed to a chain stop shaft pivoted to a case, and the irreversible chain is bent double and supported on the case as a sprocket. It is equipped with a control device that can be hung on a wheel and extended outside the case, has a dog fixed to a chain stopper shaft, has a switch operated by the dog, and stops the electric motor that drives the sprocket wheel when the switch is operated. This is a window opening/closing device.

``Operation'' When the irreversible chain is fully pulled out, the chain stop shaft that holds the end of the irreversible chain to the case rotates, rotating the dog and pressing the switch, which connects the irreversible chain to the sprocket foil via the control circuit. Stop the electric motor that drives the.

"Example" Hereinafter, an example of a skylight according to this invention will be described 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 window is shown in longitudinal section in 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 fixed to a ceiling opening frame 4 of a building, and a base bar 5 having a groove-shaped cross section is fixed to the ceiling opening frame 4 by abutting flanges. A reduction motor (hereinafter referred to as an electric motor with a reduction gear) 6 is fixed with machine screws 7 in the base bar 5 with its output shaft horizontal. The output shaft of the reduction motor 6 is connected via a shaft joint 8 to an input shaft 12 of a chain drive device 11 fixed to the base bar 5 with machine screws 9.

Fig. 5 is an enlarged side view of the chain drive device 11, Fig. 6 is a plan view of Fig. 5, and Fig. 7 is an A-A in Fig. 5.
The sectional view, FIG. 8, is a sectional view taken along line BB in FIG.
A case 13B is fixed to a case 13A fixed to the base bar 5, and the case 13 is divided into two. A worm 15 is integrally formed on the input shaft 12, and both ends of the worm 15 are connected to ball bearings 14, 1.
Ball bearings 14, 14 are in contact with the inner ring of input shaft 12.
The outer rings of the ball bearings 14, 14 are fitted into the case 13 with their far sides touching the case 13, and the input shaft 12 is supported so as not to move in the axial direction. A sprocket wheel shaft 1 is installed in the hexagonal hole of the worm wheel 16 that engages with the worm 15.
The hexagonal part 7 fits into the sprocket wheel shaft 17.
The journal portions on both sides of the hexagonal portion are supported by flat bearings 18, 19, and 20 fitted into the case 13. The worm wheel 16 is prevented from moving in the axial direction by the collars of the plain bearings 18 and 19. A sprocket foil 22 that contacts the rib of the plain bearing 20 is integrally formed on the sprocket foil shaft 17 that protrudes from the side of the plain bearing 20 that collides with the plain bearing 18.
The end portion is a cylindrical chain support 21. One end of the sprocket wheel shaft 17 is prevented from escaping to the side by a cover 10 fixed to the case 13A with machine screws 40.

An irreversible chain 3 is hung on the sprocket foil 22 from the lower horizontal direction to the vertical upward direction, and the irreversible chain 3 is attached to the upper opening 23 provided in the case 13A.
An adapter 26 is inserted through the opening 24 of the base bar 5, exits to the outside, and is pivoted to a piece at the end for fixing it to the stile of the shoji 25 of the skylight. The lower horizontal part of the irreversible chain 3 is bent 180 degrees inside the case 13 so that the upper part is parallel to the lower horizontal part, and the piece at the end is rigidly attached to the chain stop shaft 27 pivoted to the case 13. Fixed. Chain stop shaft 2
As shown in FIG. 3, 7 protrudes outside the case 13 and has a lever-shaped dog 28 fixed to its end.
When rotated clockwise by rotation of 7, case 13
A limit switch 29 fixed to is pressed to operate, and a signal from the limit switch 29 causes the deceleration motor 6 to be stopped via a control device.

A limit switch 31 is fixed on the base bar 5. The adapter 26 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 32 attached to the frame of the shoji 25 so that the three rows of irreversible chains apply a bending moment to the side where it is difficult to bend. . Adapter 26 has shoji 2
A dog 33 that operates a limit switch 31 when the switch 5 is closed is fixed. When the limit switch 31 operates, the deceleration motor 6 is stopped via the control circuit.

Although the type of irreversible chain 3 is not limited, in the embodiment, links 34 are stacked alternately, one end protrudes laterally, and are connected by a pin 30 that engages with the sprocket foil 22. The middle part of the link 34 is offset in the thickness direction of the plate and is wide. The protruding parts 35 are provided in a protruding manner, and when the three rows of irreversible chains are in a straight line, both side ends 35A of the adjacent protruding parts 35 are brought into contact with each other so that they are only slightly bent in the opposite direction. Of course, it can only bend slightly to the side.

Reference numeral 45 denotes an L-shaped cover for covering the open lower part of the base bar 5, and is fixed to the base bar 5 with machine screws 46.

In FIG. 9, the solid line indicates the closed state of the shoji 25, and the two-dot chain line indicates the open state. In the closed position of the shoji 25, the limit switch 31 is pressed by the dog 33.

Now, when the reduction motor 6 is energized, its output shaft is connected to the input shaft 12 of the chain drive device 11 via the shaft joint 8.
rotates on ball bearings 14, 14. When the input shaft 12 rotates, the worm 15 rotates and transmits the rotation to the worm wheel 16, and the sprocket wheel shaft 17
is rotated on plain bearings 18, 19, and 20, and sprocket wheel 22 is rotated. The sprocket wheel 22 rotates counterclockwise in FIG.
Pull the lower horizontal part of the irreversible chain 3 to move it to the right and extend it upward. The irreversible chain 3 extended upward is connected to the opening 23 of the case 11 and the base bar 5.
The frame of the shoji 25 is pushed up through the opening 24 of the shoji 25 through the adapter 26 and the mounting bracket 32, and the shoji 25 is rotated about the hinge 36 and lifted.

As the lower horizontal irreversible chain 3 inside the case 13 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. , the overlap is finally eliminated, and the irreversible chain 3 is connected to the chain stop shaft 27.
, and approaches a straight line tangent to the pitch line of the sprocket wheel 22. As the last piece of the irreversible chain 3 rotates, the chain stop shaft 27 rotates counterclockwise in FIG.
As shown in the figure, the dog 28 is rotated clockwise by the chain stop shaft 27, the limit switch 29 is pushed by the dog 28, and this signal stops the deceleration motor 6 via the control device. At this time, the longest length of the irreversible chain 3 is exposed to the outside through the openings 23 and 24, and the last piece fixed to the chain stop shaft 27 of the irreversible chain 3 and the pieces near the last piece pass through the chain stop shaft 27 and connect to the sprocket wheel. 2
It approaches a straight line tangent to the pitch line of No. 2 and is near the extension limit position of the irreversible chain 3.

When the reduction motor 6 is rotated in the opposite direction to the above-mentioned direction from the open position of the shoji 25 shown by the two-dot chain line in FIG. 9, the sprocket foil 22 rotates clockwise in FIG. The irreversible chain 3 protruding from the outside is drawn into the case 13 and laid down while being stretched horizontally under the case 13. Since the piece at the inner end of the case 13 of the irreversible chain 3 is fixed to the chain stop shaft 27, the chain stop shaft 27 rotates clockwise in FIG. 5, and the dog 28 rotates counterclockwise in FIG. and move away from the limit switch 29. Since the piece fixed to the chain stopper shaft 27 cannot be moved, the irreversible chain 3 extending horizontally under the case 13 is bent 180 degrees upward, and the irreversible chain 3 in the lower horizontal part and the irreversible chain 3 in the upper part are bent. 3 are stored in the case 13 so as to overlap.

At the position where the shoji 25 is closed, the dog 33 pushes the limit switch 31, and the signal from the limit switch 31 causes the deceleration motor 6 to stop via the control circuit.

[Effect of idea]

This idea fixes the piece at the end of the irreversible chain to a chain stop shaft inside the case, attaches a dog to the pivoted chain stop shaft, and presses a switch with the dog at the position where the bundled irreversible chain ends to be pulled out. Since the electric motor that drives the sprocket foil that is connected to the chain is stopped, the electric motor is stopped at the position where the irreversible chain is fully extended and the shoji is open. There is no need to adjust the relative position of the The electric equipment always stops at the position where the irreversible chain is fully extended, and there is no possibility of overrun or activation of the electric motor protection device.

Since a dog is attached to the chain stop shaft that is locked in the case of the irreversible chain and the switch is operated by the dog, the number of parts is small and no adjustment is required.

In the example, when the shoji is in the closed position, a dog is attached to the protruding end of the irreversible chain to the outside of the case, and a switch fixed to the case side is operated. Since the switch operates to stop the electric motor that drives the sprocket wheel, there is no chance of an overrun causing damage to the device, or of the shoji not being able to fully retract the irreversible chain into the case. The structure is simple because a dog is provided at the end of the irreversible chain that protrudes outside the case so that the switch can be pressed.

[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. Figure 5 is a side view of the chain drive device, Figure 6 is a plan view of Figure 5, and Figure 7 is a side view of the chain drive device.
The figure is a sectional view taken along line A-A in Figure 5, and Figure 8 is a cross-sectional view taken along line B in Figure 6.
-B sectional view, Fig. 9 is a side sectional view of the embodiment of this invention in a skylight, Fig. 10 is a side view of the skylight, Fig. 11 is a side view of the projecting window, and Fig. 12 is a stoppage of the electric motor of the conventional example. FIG. 3 is a side view of the device. 1... Window opening/closing device, 2... Window frame, 3... Irreversible chain, 4... Opening frame, 5... Base bar, 6...
...Reduction motor, 7...Machine screw, 8...Shaft coupling, 9
...Machine screw, 10...Cover, 11...Chain drive device, 12...Input shaft, 13, 13A, 13B
... Case, 14 ... Ball bearing, 15 ... Worm, 16 ... Worm foil, 17 ... Sprocket foil shaft, 18, 19, 20 ... Plain bearing, 2
1...Chain holder, 22...Sprocket foil,
23, 24... Opening, 25... Shoji, 26... Adapter, 27... Chain stop shaft, 28... Dog, 30... Pin, 29, 31... Limit switch, 32... Mounting bracket, 33... Dotsugu, 34
... link, 35 ... protrusion, 36 ... hinge,
37...screw shaft, 38...bearing frame, 39...linear guide member, 40...machine screw, 41...machine screw, 4
2...Runner, 43, 44...Micro switch, 45...Cover, 46...Machine screw.

Claims (1)

[Scope of utility model registration request] An irreversible chain housed in a case can be moved in and out of the case, the end of the irreversible chain protruding outside the case is fixed to a shoji, and a switch that operates when the shoji opens and a switch that operates when the shoji closes are provided. In a window opening/closing device, one end of an irreversible chain is fixed to a chain stopper shaft pivotally connected to the case.
The irreversible chain is folded twice and hung on a sprocket foil which is supported on the case so that it can extend out of the case.A dog is fixed to the chain stop shaft and a switch is provided which is operated by the dog. A window opening/closing device equipped with a control device that stops the electric motor that drives the sprocket wheel.