JPH0613980Y2 - Opening / closing device for smoke exhaust window - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention urges a shoji to a window frame in the direction of the window opening and supports it, and winds a wire arranged between the window and the shoji onto a winding drum. An opening / closing operation device for a smoke exhaust window which is configured to be closed by means of this, when the drive of the winding drum in the winding direction is stopped, the rotation of the winding direction is automatically locked, and the lock is released. The present invention relates to an opening / closing device for a smoke exhaust window which allows the smoke exhaust window to be opened by allowing rotation of the winding drum in the feeding direction.

Problems to be Solved by Conventional Techniques and Inventions As one of the above-described smoke exhaust window opening / closing devices, conventionally, when a window is closed, a mounting drum is integrally rotatable with a winding drum. On the supported ratchet wheel, the locking claws of the oscillating body, which were held in the rocking posture by the contact with the outer circumference of the push button, were locked so as to allow only the rotation of the winding drum in the winding direction. In this state, the wire wound between the window frame and the shoji urged in the window opening direction is wound by the rotational driving of the take-up drum to move the shoji in the window closing direction and lock the wire. When the drive of the winding drum is stopped by locking the pawl to the ratchet wheel, the rotation of the winding drum in the feeding direction is locked, the feeding of the wire is stopped, and the shoji moves in the window opening direction. When the window is held open, the rocker should be By pushing the wire into the recess formed on the outer periphery of the wire, the locking claw is disengaged from the ratchet wheel and held in the unlocked position that allows the take-up drum to rotate in the pay-out direction, and the wire is taken out. While moving the shoji in the window-opening direction, and after opening the window, the ratchet wheel pushes the return pawl of the rocking body by starting rotation of the winding drum in the winding direction. There is a device which is released from the concave portion against the spring force and at the same time, is locked to the outer periphery of the push button protruding by another spring force so as to be returned to the lock operating posture and held.

However, the smoke exhaust window is provided with a locking device for holding the shoji in a closed window posture, and by pushing and pulling an operating strip such as a geared cable connected to the locking device in the longitudinal direction, When the locking device is designed to be driven between the locked state and the unlocked state, the conventional device releases the lock of rotation of the take-up drum in the feeding direction by pushing the push button when the window is opened. However, since it does not have a function to release the locking of the locking device, when opening the window, in addition to the operation of pushing the push button, the operation of driving the operating strip in the unlocking direction must be performed. However, there has been a demand for an opening / closing operation device capable of unlocking the lock and unlocking the winding drum in a single operation.

Means for Solving the Problems As a means for solving the above problems, the present invention is directed to a mounting body, in which a drive shaft having an engaging portion projecting on the outer periphery is directed in a direction orthogonal to the forward / backward direction of a push button. In addition to rotatably supporting, it also supports a pressing body that swings and presses the push button in the pushing direction by the engagement of its engaging portion accompanying the rotation of the drive shaft in one direction. A structure in which a rotary driving body such as a gear that reciprocates an operating strip such as a geared cable connected to a provided locking device between a locking operation position and a locking release position is rotatably linked with the drive shaft. And

Advantageous Effects and Advantages of the Invention The present invention has the above-mentioned configuration, and in the closed state, the drive shaft is held so that the engaging portion does not engage the pressing body and the operating strip is in the locking operation position. When opening the window from the closed window state, when the drive shaft is rotated by a certain angle in one direction, the engaging portion engages with the pressing body, so that the push button pressed by the pressing body is pushed. The oscillating body is in the unlocked posture that allows the winding drum to rotate in the feeding direction.
Simultaneously with or before or after this, the operating strip driven by the rotary driving body that interlocks with the drive shaft reaches the unlocking position, and the shoji is released from the window-locking state and can move in the window-opening direction. With the rotation of the winding drum, the wire moves out and the shoji moves to open the window.
After opening the window, when the drive shaft is rotated in the opposite direction to the above, the operating strip returns to the locking operation position and the pusher is released from the engagement by the engagement part, so that the push button moves in the protruding direction. Then, when the winding drum is rotated after that, the rocking body returns to the locking operation position and is held in the same position by contacting the push button. It moves in the window closing direction, and at the same time the shoji reaches the window closing position, it is held immovable in the window opening direction by the locking device, and its rotation in the feeding direction is locked as the winding drum stops rotating. Therefore, only one operation of rotating the drive shaft in one direction unlocks the locking device and the rotation lock of the winding drum, so that the smoke exhaust window equipped with the locking device separately can be used. You can easily perform window closing operation. There is that effect.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

In this embodiment, a plurality of window frames 1 provided at high places on the wall surface are allowed to freely swing the shoji 2 around the lower frame 2b to the outside, and by the gas stay 3 in the window opening direction. It is applied to an outwardly falling type connecting window that is biased and supported, and a window closing wire 5 having a feeding end fixed to a window frame (not shown) located at the extreme end is used as an upper frame 1a of the window frame 1. It is laid between the pulleys 6 supported by the upper frame 2a of the shoji screen 2 and is routed in sequence to each window, and its winding end is guided downward in the upright 8 to raise the upright 8 Is connected to the winding drum 12 of the opening / closing operation device 10 which is concealed and installed in the hollow of the.

This opening / closing operation device 10 has a mounting plate 11 when closing the window.
When the winding drum 12 supported by the above is fitted with the handle 14 on the hexagonal shaft 13 and is rotationally driven in the winding direction shown by the arrow in FIG. 2, the window closing wire 5 is wound and the payout length is increased. With the shortening, the shoji screen 2 swings toward the window,
In the meantime, the engaging claw 17 and the return claw 18 of the rocking body 16 which are held in the locking operation posture shown by the solid line in FIG. 2 by contacting the outer circumference of the push button 15 are formed concentrically on the winding drum 12. The ratchet wheel 20 is locked by the springs 21 and 22 while being biased to the ratchet wheel 20.
The return pawl 18 is pushed down each time 0 advances by one tooth, whereby the rocking body 16 repeats small-angle rocking around the support shaft 24, and the locking pawl 17 resists the urging of the spring 21 to slightly move. The teeth are sequentially locked to the teeth of the ratchet wheel 20 while swinging, and when the rotation of the winding drum 12 is stopped after the window is closed, the locking claws 17 are locked to the ratchet wheel 20 to wind. The rotation of the take-up drum 12 in the unwinding direction is locked, the unwinding of the window closing wire 5 is blocked, and the shoji 2 is held so as not to swing in the fenestration direction. When the push button 15 is pushed into the support cylinder 26 against the elastic force of the spring 25 without rotating with the handlebar 14 removed, as shown by the chain line in FIG. A spring 29 is provided in the recess 28 formed on the outer periphery. By by connexion fitted into force,
The locking claw 17 is separated from the ratchet wheel 20, and the return claw 18 is held in a lock releasing posture to lock the ratchet wheel 20 so as to allow the ratchet wheel 20 to rotate in the feeding direction. Shoji 2
The winding drum 12 rotates as the window swings in the window opening direction, and the window closing wire 5 is fed out. Further, after the window opening, the winding drum 12 rotates in the winding direction. When driven, the return pawl 18 is pressed by the teeth of the ratchet wheel 20 immediately after the start of the drive, so that the rocking body 16 is moved.
Oscillates in the direction in which it is removed from the recess 28 of the push button 15, and the locking claw 17 is locked to the ratchet wheel 20 to return to the lock operating posture in which only the rotation of the winding drum 12 in the feeding direction is blocked. At the same time, when the push button 15 is detached from the recess 28 and the push button 15 is projected by the elastic force of the spring 25 to bring the swing body 16 into contact with the outer periphery thereof, the swing body 16 is held in the same posture. It has become.

In the opening / closing operation device 10, the drive shaft 30 in which the axis is oriented in the horizontal direction orthogonal to the forward / backward direction of the push button 15 and the lever 32 is fitted to the hexagonal shaft portion 31 protruding from the upright 8 is attached to the mounting plate 11. The drive shaft 30 is rotatably supported by a fixed bearing 33, and on the outer periphery of the drive shaft 30, a small-diameter outer peripheral surface 30a occupying substantially half of its circumference and a large-diameter outer peripheral surface 3 occupying the other half of its circumference.
0b, an engagement step portion 35 is formed, and the drive shaft 3
In the upper position of 0, the upper end is the protruding end surface 15a of the push button 15.
And the lower end portion of the pressing plate 36 that is brought very close to the small-diameter outer peripheral surface 30a of the drive shaft 30.
Is supported by a support shaft 38 parallel to the drive shaft 30 of FIG. 1 and abuts against the inclined stopper surfaces 39a and 39b of the bracket 37 so that the bracket 37 can swing between two positions shown by a solid line and a chain line in FIG. It has become.

Further, a gear 40 having an oblique engaging groove 41 formed on the outer periphery thereof is integrally rotatably fixed to an end portion of the drive shaft 30 on the side opposite to the lever 32, and meshes with the gear 40. The geared cable 43 is guided upward in the vertical direction 8 and is connected to the upper end of the locking operation wire 45.
Are arranged along the upper frame 1a of each window frame 1 in sequence, and the end portions thereof are fixed to the window frame (not shown) located at the extreme end via the tension coil spring 46. The window frame 1a has a locking member consisting of a fixed pinching member 53a and a movable pinching member 53b, which are formed by corresponding wedge-shaped biting portions 54, 54 which sandwich the fitting plate 51 fixed to the shoji 2 from both sides. A device 50 is provided and each movable pinch body 53b is connected to the locking operation wire 45, and the movable pinch body 53b is always fixed by the elastic force of the tension coil spring 46. Is held in a locked state of operation, and the closing plate of the shoji 2 holds the fitting plate 51 in place between the two pressing members 53.
The lock operation wire 45 is pulled when the geared cable 43 is moved downward by the rotation of the gear 40 while being fitted between the a and 53b so as to be retained irremovably. By swinging the movable pinching body 53b in the unlocking direction separating from the fixed pinching body 53a, the pinching pressure of the fitting plate 51 is released, and the shoji 2 is made swingable in the window opening direction. It is becoming like this.

In this embodiment, the drive shaft 30 separates the engagement step 35 from the pressing plate 36 in the closed window state in which the push button 15 is projected and the oscillating body 16 is held in the locking operation posture. When the pressing plate 36 is held at the reset position shown by the solid line in FIG.
It is pushed by the stopper 39a and is brought into close contact with the lower stopper 39a, while the geared cable 43 is in the locking operation position, and the locking device 50 holds the shoji 2 so that it cannot swing in the window opening direction. When opening the window, when the lever 32 is tilted and the drive shaft 30 is rotated by about 90 degrees, the gear 40 rotates by the same angle and the geared cable 43 moves downward in the locking release direction, thereby locking the windows 50. At the same time that the lock is released, as shown by the chain line in FIG. 2, the engaging step portion 35 of the drive shaft 30 engages with the lower end portion of the pressing plate 36 and swings it, whereby the push button 15 Is pushed in and rocker 1
Since 6 is in the unlocked posture and the take-up drum 12 can rotate in the pay-out direction, the window closing wire 5 is taken out while the take-up drum 12 is rotated and the windows are simultaneously opened.

Here, in the present embodiment, the unlocking of the locking device 50 and the unlocking of the rotation lock of the take-up drum 12 are performed at the same time, but the meshing position of the geared cable 43 with the gear 40 in the axial direction. By changing the lever, the lever 32 may be operated to release the locking of the locking device 50 first, and then the rotation lock of the winding drum 12 may be released. By doing so, the locking of the locking device 50 is released in a state where the window closing wire 5 is still tensioned. Therefore, the locking of the winding drum 12 is released first and the window closing wire 5 is released in the locked state. There is no advantage that a sudden pulling force acts on the window closing wire 5 as in the case of canceling, and the window can be smoothly opened.

After opening the window, when the lever 32 is raised to return the drive shaft 30 to the original reset state, the geared cable 43 moves upward in the locking operation direction, whereby the locking device 50 enters the locking operation state and at the same time, When the joining portion 35 is separated from the pressing plate 36, the pressing of the pressing plate 36 in the direction in which the pressing button 15 is pressed is released and the pressing button 15 becomes projectable. By rotatably driving in the winding direction, the oscillating body 16 returns to the locking operation posture, and the push button 15 projects so that the oscillating body 16 is held in the same posture.

In the above embodiment, in order to operate the locking device 50, the gear operating cable 43 is connected to the locking operation wire 43, and the gear 40 meshing with the geared cable 43 is connected to the drive shaft 30.
However, instead of this, a drum is fixed to the drive shaft 30 and the locking operation wire 43 is directly connected thereto,
The locking of the locking device 50 may be released by rotating the drum together with the drive shaft 30 and winding the locking operation wire 43.

Similarly, in this embodiment, the lever 32 that is tilted when the window is opened
Is reset to the reset state by manually raising it. However, by mounting a spring, the lever 32 that has fallen is automatically returned to the reset state by the elastic restoring force of the spring. May be.

The present invention is not limited to the falling-over type smoke exhaust window described in the above embodiment, but can also be applied to a protruding type smoke exhaust window that is opened and closed by swinging the shoji around the upper frame 2a of the shoji. It can be applied.

[Brief description of drawings]

The attached drawings show an embodiment of the present invention. FIG. 1 is a partially cutaway external perspective view of a smoke exhaust window to which the device of this embodiment is applied, and FIG. is there. 10: open / close operation device, 11: mounting plate, 15: push button, 3
0: drive shaft, 35: engagement step, 36: pressing plate, 40: gear, 43: geared cable, 50: locking device

Claims (1)

[Scope of utility model registration request] 1. When closing a window, a ratchet wheel supported by a mounting body so as to be integrally rotatable with a take-up drum is held in a rocking posture by abutting against the outer circumference of a push button. In the state in which the locking claw of the moving body is locked so as to allow only rotation of the winding drum in the winding direction, it is urged in the window frame and window opening direction by rotational driving of the winding drum. The wire wound between the shoji and the shoji is wound up to move the shoji in the window direction, and the driving of the winding drum is stopped by the engagement of the engaging claw with the ratchet wheel. The rotation of the winding drum in the unwinding direction is locked, the unwinding of the wire is stopped, and the shoji is held immovably in the fenestration direction. By pushing it into the recess formed on its outer circumference. The locking claw is disengaged from the ratchet wheel and is held in a lock release posture that allows rotation of the winding drum in the payout direction, and the shoji is moved in the window opening direction while paying out the wire, After opening the window, the ratchet wheel is pressed against the return pawl of the rocking body by starting rotation of the winding drum in the winding direction, so that the rocking body resists the spring force. In the opening / closing operation device for a smoke exhaust window, which is adapted to be removed from the concave portion and at the same time locked to the outer periphery of the push button protruding by another spring force, to be returned to and held in the locking operation posture, The mounting body rotatably supports a drive shaft having an engaging portion on the outer periphery in a direction orthogonal to the forward / backward direction of the push button, and engages with the rotation of the drive shaft in one direction. For engagement of parts Supporting a pressing body that swings and pushes the push button in the pushing direction, and an operating strip such as a geared cable connected to a locking device provided on the window frame is provided on the drive shaft at a locking operation position and a locking release position. A smoke exhaust window opening / closing operation device, characterized in that a rotary drive member such as a gear that reciprocates between the two is connected so as to rotate in conjunction with the drive shaft.