JPH0352951Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to an opening/closing device for an outward folding window.

External folding windows are highly effective in ventilation and smoke removal, so they are preferred for high-rise windows. Traditionally, windows in high places that can be folded out can usually be opened and closed manually from a suitable height above the floor, or by remote control using an electric device.
For rapid smoke evacuation in the event of a fire, some shoji are equipped with smoke detectors and operate an electric opening/closing device to open the sliding shoji. However, in the event of a fire, there is a high possibility of a power outage, making it unsafe to use only electric switchgears.

The purpose of this invention is to provide a window opening/closing device for an outward-folding window that can be opened and closed normally during normal times, the opening degree can be adjusted freely, and can be opened rapidly in an emergency. shall be.

This invention includes a worm that is movable in the axial direction and a worm foil that engages with the worm, and a cam member that is biased by a spring toward the end of the worm shaft from a direction intersecting the axis of the worm, and a cam of the cam member. The worm can be energized in the axial direction opposite to the thrust of the worm, and the shaft of the worm wheel is connected to the line shaft that rotates the winding drum of the winding opening/closing device of the folding window, and the worm is used for normal operation. The cam member is connected to a driving means for quick opening.

Embodiments of this invention will be described below with reference to the drawings. FIG. 1 is a perspective view seen from the inside. A shoji metal fitting 3 is fixed to the upper stile of an outward-tiling glass shoji 2 pivotally attached to the lower frame of the opening frame 1, and one end of a belt 4 of a winding conductive medium is latched to the shoji metal fitting 3. The wrapped conductive medium may be wire rope. The other end of the belt 4 is latched to a winding drum fixed to a horizontal shaft 6 along a window pivotally mounted to a case 5 fixed to the upper frame of the opening frame 1, so that the belt 4 is extended from above to the winding drum. (not visible in the diagram). A line shaft 7 is connected to the horizontal shaft 6 of the drum. The glass shojis 2 are arranged side by side on the left and right, but are constructed in the same way, and the rotation of the line shaft 7 causes the winding drums in the case 5 to operate simultaneously on both the left and right sides, and the plurality of glass shojis 2 are opened and closed at the same time. 8 is a stay damper in which a rod is inserted into the cylinder so that the cylinder and rod can be moved in the axial direction, and the cylinder end is pivotally connected to the vertical frame of the glass shoji 2;
The rod end is pivotally connected to the vertical frame of the opening frame 1. A spring is housed in the cylinder of the stay damper 8 to bias the cylinder and rod in the direction of extension. This may be a spring loaded hydraulic damper. The stay damper 8 has a function of urging the glass shoji 2 toward the outside when the glass shoji 2 begins to open.

An operation box 10 is fixed to the upper part of a mullion 9 that partitions the opening frame 1. 11 is a ball chain for normal opening and closing, and 12 is a pull for one-touch opening.
13 is a rope connecting the handle 12 and the operation box 10. By pulling the left side of the ball chain 11, the glass shoji 2 is continuously opened, and by pulling the right side of the ball chain, the glass shoji 2 is continuously moved in the closing direction, and the opening degree can be obtained freely. If the handle 12 is pulled when the glass shoji 2 is closed or partially opened, the glass shoji 2 is fully opened.

2 is a front view of the operation box 10 shown in FIG. 1, FIGS. 3 and 4 are sectional views taken along line AA in FIG. 2, and FIG. 3 shows the normal window opening/closing operation state. Figure 4 shows the state in which the handle 12 is pulled. line axis 7
A horizontal shaft 6 whose hexagonal ends are connected to the horizontal shaft 6 has an intermediate cylindrical portion pivotally connected to a bearing 17 that is fitted into a cylindrical hole 16 of a casing 15 and is fixed therein. Fixed. The worm wheel 18 is engaged with a worm 19 with a shaft extending horizontally in the inner and outer directions, and the worm 19 is connected to a bearing bush 22 that is press-fitted into a cover 21 that is fitted and fixed in a square hole 20 of the casing 15. The bearing bush 25 is slidably movably axially inserted into a slide 24 that is press-fitted into a slide 24 that is non-rotatably inserted into a square hole 20 in the axial direction of No. 19. The left end of the slide 24 in FIGS. 3 and 4 is a fork in the vertical deep hole, and the roller 23 accommodated therebetween is pivotally connected to the slide 24 by a pin 26.

As shown in FIG. 3, a movable stopper 27 is inserted into the square hole 14 in the vertical direction intersecting the axis of the worm 19. 28 is the roller 2 of the movable stopper 27
This is a slide bearing that is accommodated in a vertical groove 29 provided on a side surface opposite to the side surface in contact with 3, and inserted between the groove 29 and the square hole 14. One end abuts the lower end of the movable stopper 27, and the other end abuts the bottom of a flanged cylindrical container-shaped spring receiver 32 inserted into the cylindrical hole 31 at the bottom of the square hole 14 of the casing 15, and is integrated with the movable stopper 27. Alternatively, a compression spring 34 is inserted into an operating rod 33 fixed to the movable stopper 27.

The movable stopper 27 is connected to the pin 2 as shown in FIG.
6 is parallel to the rolling surface of the slide bearing 28 in the square hole 14 up to a point slightly above the horizontal line The cam 35 is formed in a straight cam curve upward to the left so as to move to the right from the top. Reference numeral 36 denotes a fixed stopper fixed to the casing 15 that determines the upper limit position of the movable stopper 27.

The shaft part of the worm 19 that is fitted into the bearing bush 22 protrudes to the outside and has a chain wheel 3 at the tip.
7 is fixed and an endless ball chain 11 is hung thereon. 38 is a chain cover pivotally attached to the shaft end of the worm 19.

During normal window opening/closing, the chain foil 37 is rotated in the forward or reverse direction by pulling either of the ball chains 11. Now, assuming that the glass shoji 2 is closed, if you pull the left side of the ball chain 11 in Fig. 1, the chain foil 37 and the worm 19 will rotate in the direction opposite to the arrow A shown in Fig. 3, and the worm 19 will be moved to the right. When twisted, the worm wheel 18 rotates in the direction opposite to the direction of the arrow B shown in the figure.
Since the belt 4 is wound around the winding drum in the case 5 so as to protrude from the upper side, the belt 4 is pulled by the force of the stay damper 8 to open the glass shoji 2 outward, and the winding drum in the case 5 is pulled. The line shaft 7 transmits torque in the direction opposite to the direction of the arrow B through the drum, and a load torque in the direction opposite to the direction of the arrow B acts on the worm wheel 18. However, warm 19
Since the torsion angle is automatically tightened, the right ohm 19 will not rotate from the load side depending on the force of the stay damper 8, but it can be rotated slightly from the chain wheel 37. At this time, the worm wheel 18 is biased by the stay damper 8 in the opposite direction to the arrow B shown in the figure, so the worm 19 is biased toward the left in FIG. Roller 23 is pushed to the left
is in contact with the side surface of the movable stopper 27, and the worm 19 does not move. As the opening degree of the window increases, the force of the stay damper 8 weakens, and when the internal spring is fully extended, the pushing force disappears. As the stay damper 8 expands, a rotational moment due to the weight of the glass shoji 2 is applied and increases, and since tension is constantly applied to the belt 4, the worm wheel 18 tries to rotate in the direction opposite to the direction indicated by the arrow B. The force causes the worm 19 to thrust to the left. When the window is fully opened, the extension limit position of the stay damper 8 becomes a stopper.

The first part of ball chain 11 from the fully open state of the window.
When the right side is pulled in the figure, the chain wheel 37 and the worm 19 rotate in the direction of arrow A, and the worm wheel 18 rotates in the direction of arrow B. As already mentioned, when the glass shoji 2 is fully opened, there is an outward tilting moment based on the weight of the glass shoji 2, so the worm foil 18
Resistance torque is applied in the direction opposite to the rotation direction of arrow B, and in order to counteract this resistance torque and rotate the worm wheel 18, a leftward thrust is applied to the worm 19 in FIG. a roller 23 carried by a bushing 25, the bearing bushing 25 abutting against a movable stopper 27;
It is supported via a pin 26 on a slide 24 which is immovable to the left. When the opening degree of the window becomes smaller, the force of the stay damper 8 is applied and the force increases, and the moment of the glass shoji 2 due to its weight is reduced. The worm 19 is rotated against these resistances, and the worm 19 continues to receive a leftward thrust. When the window is closed, the moment of overturning the glass shoji 2 based on its weight is zero or close to zero.

When the handle 12 is pulled, the operating rod 33 is pulled through the rope 13, and the movable stopper 27 is lowered against the compression spring 34. The worm 19 receives the leftward thrust in FIG. 3, which is based on the tensile force of the stay damper 8 and the moment of overturning the glass shoji 2 based on the weight of the glass shoji 2, even when the glass shoji is stationary other than when the window is opened or closed. I'm here, Laura 23
is pushed to the side of the movable stopper 27. The force is carried by a slide bearing 28. Therefore, the movable stopper 27 rolls on the inner wall of the square hole 14 via the slide bearing 28, and the roller 23 rotates around the pin 26, so that the frictional resistance is extremely small. When the handle 12 is lowered, the side surface of the movable stopper 27 and the roller 23 come out of contact, the cam 35 and the roller 23 come into contact, and the worm 1
9 pushes the slide 24 to the left via the bearing bush 25 based on the force of the outward tilting of the glass shoji 2;
The roller 23 follows the cam 35 and moves to the left. Fourth
When the worm 19 moves to the state shown in the figure, the worm 19 and the worm foil 18 are disengaged, so the glass shoji 2 is rapidly tilted outward due to the tensile force of the stay damper 8 and the weight of the glass shoji 2. Then, the belt 4 rotates the drum in the case 5, rotates the horizontal shaft 6 via the line shaft 7, and rotates the worm wheel 1.
8 rapidly rotates in the direction opposite to arrow B. In this way, the glass shoji 2 is supported at the extension limit position of the stay damper 8. Even if you take your hand off the handle 12, the 4th
The condition shown in the figure is maintained, and the window remains fully open.

To close the glass shoji 2 when the worm 19 and worm foil 18 are disengaged, pull the left side of the ball chain 11 in FIG.
9 rotates in the direction opposite to arrow A in the figure, and when the threaded end of the worm 19 comes to a position where it engages with the end of the worm wheel 18, as if screwing a screw into a female thread, the rotation pushed up by the compression spring 34 is rotated. Since the worm 19 is pressed against the worm wheel 18 via the bearing bush 25 by the slide 24 which is urged rightward via the roller 23 by the cam 35 of the dynamic stopper 27, the worm 19 engages with the worm wheel 18 and the worm 19 engages with the worm wheel 18. Since the worm wheel 19 is rotated by the chain wheel 37 and the worm wheel 18 is stationary, the worm 19 moves to the right.
The movable stopper 27 rises, and the roller 23 moves toward the cam 3.
5, the slide 24 follows the right row of the worm 19. When the movable stopper 27 reaches its upper limit, the movable stopper 27 contacts the fixed stopper 36, and the roller 23 contacts the side surface of the movable stopper 27, resulting in the state shown in FIG. Ball chain 1 here
If you pull the right side in Figure 1 of 1, the effect is the same as when closing a normal window, and the glass shoji 2 rotates in the closing direction.

FIG. 5 is a vertical cross-sectional view in the perspective direction showing another embodiment of this invention, and FIG. 6 is a plan view of FIG. 5.
In this embodiment, a movable stopper 27 is arranged between the worm wheel 18 and the chain wheel 37,
This is an embodiment in which the ball chain 11 and the ball chain 11 are brought close to each other. The shaft portion of the worm 19 is inserted through a slide 24, and the slide 24 has deep grooves in the vertical direction on both sides of the shaft portion of the worm 19, and a roller 23 is fitted between the grooves and pivoted by a pin 26. The tip of the movable stopper 27 is divided into two parts, and the shaft portion of the worm 19 projects toward the indoor side through the two parts. The two ends of the movable stopper 27 each serve as a cam 35. The belt 4 is wound around a winding drum in the case 5 so as to protrude from the bottom. According to this embodiment, the overall size in the viewing direction can be reduced.

In the first and second embodiments, the overall longitudinal direction becomes longer in order to accommodate the compression spring 34, and if it is attached to the upper frame etc. in a position other than the vertical frame of a mullion etc., the protruding part will be formed towards the glass surface of the shoji. big. Therefore, FIG. 7 shows a vertical cross-sectional view in the forward direction of an embodiment designed to provide an operation box with a small size and height in the forward direction. Parts of the figure are shown in perspective. In this embodiment, the worm 19 is disposed below the worm wheel 18, and the belt 4 extends from above to the winding drum in the case 5.
is wrapped around it. Slide 2 as in the second example
4, and the cam 35 of the movable stopper 27 that acts on the roller 23 attached to the slide 24 with a pin 26 is provided at the lower end, and the movable stopper 27 is moved downward by a leaf spring 34 fixed at the left end of the upper end surface of the casing 15. is advancing towards. Pins 4 are installed on both sides of the movable stopper 27 in the horizontal direction along the window.
3 is implanted, and the pin 43 protrudes to the outside of the casing 15 so as to be movable along a deep groove 15a cut vertically in the side wall of the square hole 14 of the casing 15.
The lever 41 is movably fitted into an elongated hole 42 at one end of the lever 41, which is pivotally connected to the outer surface of the casing 15 by a pin 39, and one end of the rope 13 is locked to the other end of the lever 41.

In normal operation, the window is opened and closed by pulling the ball chain 11 in the same manner as in the previous embodiments. To open the window with one touch, pull the handle 12, and the lever 41 rotates counterclockwise in FIG. When the movable stopper 27 is lifted against the leaf spring 34, the worm wheel 18 moves the worm 19 to the right due to the outward tilting moment based on the weight of the stay damper 8 and the glass shoji 2, and the worm 19 and the worm wheel move to the right. 18 is disengaged and the worm foil 1
8 can be rotated freely and the window can be quickly opened fully. To close the window, pull the window opening side of the ball chain 11 once to engage the worm 19 and worm foil 18, and then pull the window closing side of the ball chain 11. That is, the operation is the same as in each of the previous embodiments. According to this embodiment, the projected direction and height are small, and it fits well in the window frame mounting, and the design is also excellent.

In each of the embodiments, a motion transmitting member consisting of a slide and a roller attached to the slide with a pin is interposed between the worm and the movable stopper, but the roller 23 may not necessarily be interposed and the slide end may be shaped like a circular cam follower. Furthermore, the shaft end of the worm may be formed into a conical shape, for example, so that the generatrix has the shape of a cam follower, so that the movable stopper directly receives the thrust of the worm.

Although each of the embodiments is operated manually, the worm may be driven to rotate electrically, and the movable stopper may be moved using, for example, a solenoid. When pulling using a solenoid, it is desirable to attach a rope to the movable piece of the solenoid so that the solenoid can be manually operated so that it can be pulled with a handle at the end of the rope so that it can be operated even during a power outage. When the driving force for such a worm and movable stopper is electric, there are no limitations on the direction in which the worm and movable stopper can be operated.

The movable stopper 27 may be a swinging cam instead of a linearly moving cam member, and therefore may be in the form of a lever pivotally connected to the casing 15 with a pin 40 as shown in FIG.

This invention includes a worm that is movable in the axial direction and a worm foil that engages with the worm, and a cam member that is biased by a spring toward the axial end of the worm from a direction intersecting the axis of the worm. The worm can be urged in the axial direction directly or indirectly through a motion transmission member such as a slide with a cam follower at the cam portion, and the shaft of the worm wheel is turned outward to rotate the winding drum of the winding opening/closing device of the window. Since it is connected to the line shaft, the worm is connected to the rotating drive means, and the cam member is connected to the quick opening drive means, the window can be opened and closed by continuously adjusting the opening degree at any time, and the window can be opened and closed as needed to exhaust smoke. In times of emergency, you can quickly open the window fully with a single touch. The operation box is small and unitized, and the installation process is simple, as it only needs to be connected to the line shaft for opening and closing the outward-folding window and attached to the frame. Rapid full opening of the windows is suitable for situations where power outages are likely to occur, such as in the event of a fire, because the windows open by themselves without the use of power. Since the moment of the glass shoji of the outward-folding window is guided to the worm wheel and the worm is moved in the axial direction by the worm wheel, the structure is simple and the operation in an emergency is highly reliable.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the embodiment of this invention as seen from the inside, Fig. 2 is a front view of the operation box, Fig. 3,
4 is a sectional view taken along the line A-A in FIG. 2, and FIG. 5 is a vertical sectional view taken in the perspective direction of another embodiment of this invention.
6 is a partially sectional plan view of FIG. 5, FIG. 7 is a vertical sectional view of still another embodiment of the invention, and FIG. 8 is a partially sectional plan view of FIG. 7. figure,
FIG. 9 is a longitudinal sectional view of another embodiment of this invention. 1... Opening frame, 2... Glass shoji, 3... Shoji metal fittings, 4... Belt, 5... Case, 6... Horizontal axis, 7... Line axis, 8... Stay damper, 9...
... mullion, 10 ... operation box, 11 ... ball chain, 12 ... pull, 13 ... rope, 14 ...
...Square hole, 15...Casing, 15a...Deep groove,
16... Cylindrical hole, 17... Bearing, 18... Worm foil, 19... Worm, 20... Square hole, 2
1...Cover, 22...Bearing bush, 23...
Roller, 24... Slide, 25... Bearing bush, 26... Pin, 27... Movable stopper, 28
...Slide bearing, 29...Concave groove, 31...
... Cylindrical hole, 32 ... Spring receiver, 33 ... Operation rod, 34 ... Spring, 35 ... Cam, 36 ... Fixed stopper, 37 ... Chain foil, 38 ... Chain cover, 39, 40 ... Pin, 41...Lever, 42...Long hole, 43...Pin, x...Horizontal line.

Claims (1)

[Scope of utility model registration request] A means for pushing out a shoji of an outward folding window, a belt having one end locked to the shoji and the other end wound around a winding drum, a winding drum attached to an opening frame, and a belt for transmitting rotation to the winding drum. A device equipped with a line shaft, which includes a worm supported on the shaft so as to be freely movable in the axial direction, and a worm foil that engages with the worm, and is biased by a spring from a direction intersecting the axis of the worm toward an end of the shaft of the worm. A cam member is provided, and the cam of the cam member is capable of axially urging the worm directly or indirectly through a motion transmission member such as a slide with a cam follower, and the shaft of the worm wheel is connected to the line shaft. An operating device for opening/closing a window, which is connected to a rotation operating means and includes a means for operating a cam member in a direction to separate it from a worm.