JPH0339146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device installed at a high place in a building, such as a smoke exhaust window, that can be opened and closed remotely.

Problems to be Solved by the Prior Art and the Invention Devices for opening and closing windows installed at high places in buildings, such as smoke evacuation windows, have a device that operates to open and close windows installed at high places in buildings, for example, by applying swinging force in the window opening direction to a window panel. One end of the wire is connected, and the other end is connected to a rotating drum in an operation box located at the bottom of the building. When the window is closed, the wire is wound around the rotating drum by rotating the operating handle to resist the biasing force. The window board is closed using the latching mechanism, which is then held in the closed state by the latch mechanism. In the event of an emergency such as a fire outbreak, the latch mechanism is released and the wire is let out from the rotating drum while the window board is suddenly opened by the biasing force. However, in the past, the drive shaft that supported the operating handle and the driven shaft that supported the rotating drum were directly connected, so when the window was suddenly opened, the operating handle was raised along with the rotating drum. It rotated at such high speed that the operating handle could hit the operator, or the centrifugal force could cause it to come loose from the drive shaft and be blown away, leading to a serious accident. For this reason, measures have been taken to prevent the above-mentioned accidents by attaching the operating handle only when the window is closed and removing it at all times. However, it is troublesome to attach and remove the operating handle each time. There was a problem with the operation handle often getting lost.

The present invention has been made in view of the above points, and is designed to prevent the rotational force from being transmitted to the drive shaft connected to the operating handle when rotational force is applied to the driven shaft connected to the rotating drum. It is an object of the present invention to provide a window opening/closing operating device that allows a window panel to be quickly opened with peace of mind even when the operating handle is always attached to a drive shaft.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.

Reference numeral 1 denotes an operation box installed at the bottom of a building. On one side of the operation box 1, a rotary drum 2 with a ratchet wheel 3 fixed to one end is freely rotatably supported. The other end of the wire 4 is connected to a window plate that is biased with swinging force in the window opening direction by a smoke exhaust window biasing device installed at a high place in the building, and the other end of the wire 4 is It has a locking claw 6 at one end on the side and a fitting part 7 at the other end.
A latch lever 5 is pivotally supported, and the latch lever 5 is rotatably biased in a direction in which the button contacts the outer peripheral surface of the release button 8, and the wire 4 is wound up by the rotation of the rotary drum 2 in the winding direction, and the window plate resists the biasing force. When the window is closed and the rotation of the rotating drum 2 is stopped, the locking claw 6 fits into the ratchet wheel 3 with the fitting portion 7 of the latch lever 5 in contact with the outer peripheral surface of the release button 8, and the rotating drum 2 is closed.
When the release button 8 is pushed in against the spring force of the coil spring 10 while the window plate is held in the closed state or the open state at an arbitrary angle, the fitting portion 7 of the latch lever 5 is prevented from rotating in the extending direction. falls into the fitting groove 9 of the release button 8 and holds the locking pawl 6 apart from the ratchet wheel 3, and the wire 4 is removed from the rotating drum 2.
While rapidly drawing out the window plate, the window plate is suddenly opened by the force, and when the rotary drum 2 is rotated again in the winding direction, the latch lever 5 is rotated in the opposite direction against the biasing force due to the rotating operation, and the latch lever 5 is fitted. Fitting part 7 into groove 9
When the release button 8 returns to its original position, the latch lever 5 returns the fitting portion 7 to the state in which it is in contact with the outer peripheral surface of the release button 8.

A fixed cylinder 11 having a center hole 12 is fixed coaxially with the rotating drum 2 on the upper surface of the case 1, and the center hole 15 has a center hole 15 at the bottom side of the center hole 12. A clutch plate 14 having an annular protruding wall 16 surrounding one side of the center hole 15 is fitted so as to be freely rotatable.
The cylindrical part 19 at the other end of the driven shaft 17, which has a hexagonal cross-section fitting part 18 formed at one end and which is fitted into the mounting hole 2a of the rotary drum 2, is fitted into the center hole 15 of the rotary drum 2 with relative freedom of rotation. The projecting wall 16 is provided at one end.
A drive shaft 20, which has a hexagonal cross-section fitting portion 23 at the other end, connects the disk 21 to the clutch plate 1.
A cover plate 25 having a bearing hole 26 is placed on the fixed cylinder 11 and fixed to the top surface of the drive shaft 20 so that the cover plate 25 cannot escape and is freely rotated. The mounting hole 28 of the operating handle 27 is fitted.

Three grooves 30 extending from the outer circumferential surface to the inner circumferential surface are radially bored at equal angular intervals in the protruding wall 16 of the clutch plate 14, and in each groove 30, the cylindrical portion 19 of the driven shaft 17 is formed. A cylindrical floating body 31 having an outer diameter larger than the distance between the outer circumferential surface of the projection wall 16 and the outer circumferential surface of the projecting wall 16 is fitted, and the inner circumferential surface of the fitting hole 22 of the disc 21 of the drive shaft 20 is fitted. , three pressing plates 33 are similarly fixed at equal angular intervals, and the cylindrical portion 1 of the driven shaft 17 is attached to the inner surface of each pressing plate 33.
9, the distance from the outer peripheral surface of the slanted engagement surface 3 is larger than the outer diameter of the floating body 31 at the front clockwise in FIG. 3, and smaller than the outer diameter of the floating body 31 at the rear.
4 is formed.

A fitting protrusion 36 is protruded from the surface of the disc 21 of the drive shaft 20 that corresponds to the clutch plate 14, and the fitting protrusion 36 is fitted freely into an arcuate guide groove 37 formed on one surface of the clutch plate 14. A compression coil spring 38 is installed in the guide groove 37 at the rear of the fitting protrusion 36 in the counterclockwise direction in FIG. The portions of the engaging surfaces 34 of each pressing plate 33 that are far from the driven shaft 17 are placed in positions corresponding to the floating bodies 31, as shown in FIG. 3a. In addition, a cutout groove 40 is formed in a part of the outer periphery of the reduced diameter portion on the other side of the clutch plate 14, and the above-described compression coil spring is provided at the bottom of the fixed cylinder 11. An elastic ring 41 having a larger spring force than 38 is fitted in a state in which it is in pressure contact with the inner circumferential surface by its elastic expansion force, and the bent portions 42 at both ends of the elastic ring 41 are fitted into the notch groove 4.
The clutch plate 14 is fixed to both end surfaces of the clutch plate 14, and the frictional force between the elastic ring 41 and the inner circumferential surface of the fixed cylinder 11 restricts the movement of the clutch plate 14.

Next, the operation of this embodiment will be explained.

When the operating handle 27 is rotated clockwise from the state shown in FIG.
As shown in FIG. 3b, the drive shaft 20 integrally connected to the operating handle 27 is compressed with a smaller spring force than the elastic ring 41, as shown in FIG. 3b. coil spring 3
8 is elastically contracted and rotated clockwise, and the part of the engagement surface 34 of the pressing plate 33 having a small distance from the driven shaft 17 engages with the floating body 31 and presses it against the driven shaft 17, and is fixed with the elastic ring 41. The clutch plate 14 and the driven shaft 17 rotate clockwise together with the drive shaft 20 against the frictional force with the cylinder 11, and the rotating drum 2 integrally connected to the driven shaft 17 rotates in the winding direction. As a result, the wire 4 is wound up and the window plate is closed. When the window closing operation is completed and the operation handle 27 stops rotating and is released, the drive shaft 20 rotates counterclockwise by the restoring elasticity of the compression coil spring 38 and returns to the state shown in FIG. 3a. .

On the other hand, when the operating handle 27 is rotated counterclockwise from the state shown in FIG. 33 engagement surface 3
The part that is far from the driven shaft 17 of 4 is the floating body 3.
1, the drive shaft 20 and clutch plate 14 rotate together in the counterclockwise direction, so the pressing plate 33 does not press the floating body 31 against the driven shaft 17, and the rotational force is transferred to the driven shaft 17. It is not transmitted to the shaft 17. Therefore, when the window board is in a fenestrated state,
The extra winding portion of the wire 4 is unwound from the rotating drum 2 and the wire 4 is prevented from becoming entangled.

In addition, in the state shown in FIG.
The driven shaft 17 rotates counterclockwise at high speed, but because the floating body 31 is spaced apart from the pressing plate 33, the driven shaft 17 is rotated counterclockwise at a high speed.
The rotational force is not transmitted to the drive shaft 20, and therefore the operating handle 27
never rotates.

Structure and effects of the invention As specifically explained in the above embodiments,
The window opening/closing operation device of the present invention has a central hole in the hollow of a fixed cylinder fixed to an operation box, and
A clutch plate having an annular protruding wall surrounding one side of the center hole is fitted to freely rotate, and a driven shaft is connected at one end to a rotating drum around which a wire connected to the window plate is wound. one end of which is fitted into the center hole of the clutch plate with relative freedom of rotation; one end of the disc has a fitting hole that is loosely fitted concentrically to the projecting wall; The disk of the drive shaft, which is connected to the operating handle, is placed over the clutch plate and accommodated in the fixed cylinder, and a groove is formed in the protruding wall of the clutch plate that reaches from the outer circumferential surface to the inner circumferential surface. , a floating body having an outer diameter larger than the distance between the outer circumferential surface of the driven shaft and the outer circumferential surface of the projecting wall is fitted into the groove, and a floating body is fitted into the inner circumferential surface of the fitting hole of the disc. , a diagonal engagement surface is provided whose distance from the outer peripheral surface of the driven shaft is greater than the outer diameter of the floating body at the front in the forward rotational direction of the driven shaft and becomes smaller at the rear; between the plates, the drive shaft is caused to shift in the opposite rotational direction relative to the clutch plate, and a portion of the engagement surface having a large distance from the driven shaft is maintained at a position corresponding to the floating body; 1
an elastic body is provided, and a second elastic body having a spring force greater than that of the first elastic body is provided between the clutch plate and the fixed cylinder, which restricts the movement of the clutch plate by frictional force; Only when the first elastic body is rotated in the forward direction against the spring force of the first elastic body, the engaging surface engages the floating body and presses it against the driven shaft, thereby causing the driven shaft to rotate integrally. The gist is that when the operating handle is rotated in the positive direction, which is the winding direction, the engagement surface presses the floating body against the driven shaft, thereby integrating the driven shaft with the drive shaft. When the window board is closed by winding the wire around the rotating drum and the operating handle is rotated in the opposite direction, the engagement surface prevents the floating body from pressing against the driven shaft. If the drive shaft and clutch plate rotate together when the window plate is closed, the rotational force is not transmitted to the driven shaft. In addition, when the driven shaft is rotated by the rotation of the rotating drum, the driven shaft simply rotates idly within the center hole of the clutch plate, and its rotational force is transferred to the drive shaft. Even if the window plate is suddenly opened with the operating handle attached to the drive shaft without being transmitted, the operating handle can be prevented from rotating at high speed together.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of one embodiment of the present invention, FIG. 2 is a partially exploded perspective view thereof, and FIG. 3 is a sectional view for explaining its operation. 1: Operation box, 2: Rotating drum, 4: Wire, 11: Fixed cylinder, 12: Center hole, 14: Clutch plate, 15: Center hole, 16: Projection wall, 17: Driven shaft, 18: Fitting part, 19: Cylindrical part, 20: Drive shaft, 21: Disc, 22: Fitting hole, 23: Fitting part,
27: operation handle, 30: groove, 31: floating body,
33: Pressing plate, 34: Engagement surface, 38: Compression coil spring, 41: Elastic ring.

Claims (1)

[Claims] 1 Inside the hollow of the fixed cylinder fixed to the operation box,
A clutch plate having a center hole and an annular protruding wall surrounding one side of the center hole is fitted so as to rotate freely, and one end is attached to a rotating drum around which a wire connected to a window plate is wound. the other end of the driven shaft connected to the clutch plate is fitted into the center hole of the clutch plate with relative freedom of rotation, and the one end is provided with a fitting hole that is loosely fitted concentrically to the projecting wall. The disk of the drive shaft, the other end of which is connected to the operating handle, is placed over the clutch plate and accommodated in the fixed cylinder, and the projecting wall of the clutch plate has a circular plate extending from its outer circumference to its inner circumference. A groove reaching the surface is formed, and a floating body having an outer diameter larger than the distance between the outer circumferential surface of the driven shaft and the outer circumferential surface of the projecting wall is fitted into the groove. A diagonal engagement surface is provided on the inner circumferential surface of the fitting hole, and the distance between the outer circumferential surface of the driven shaft is greater than the outer diameter of the floating body at the front in the forward rotational direction of the drive shaft and becomes smaller at the rear. between the drive shaft and the clutch plate, the drive shaft is provided with a relative deviation in a reverse rotational direction with respect to the clutch plate, and a portion of the engagement surface having a greater distance from the driven shaft is located on the idler member; A first elastic body is provided between the clutch plate and the fixed cylinder to maintain the clutch plate at a position corresponding to the first elastic body, and a second elastic body having a spring force greater than that of the first elastic body is provided between the clutch plate and the fixed cylinder. the engaging surface engages the floating body and presses it against the driven shaft only when the driving shaft is rotated in the positive direction against the spring force of the first elastic body; . A window opening/closing operating device, characterized in that the driven shaft is configured to rotate integrally.