JP2004190311A - Manual operating device for building shutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual operating device for a building shutter of excellent appearance while preventing misoperation and improving operational easiness in emergency. <P>SOLUTION: This manual operating device is provided with a manual closing mechanism 20 for brake release in emergency. The manual closing mechanism has: a return lever 21 operated into a braking attitude wherein one end part is almost flush with the front face of a storage box, and into a release attitude; a lock mechanism 30 for locking the return lever into the braking attitude; and a push button 22 for releasing the lock state by the lock mechanism to change the return lever into the release attitude to thereby release the brake. The push button is provided almost flush with the front face of the storage box near the lower side of the return lever, and a misoperation preventing pin 40 for regulating the push operation of the push button is provided in a projecting/receding manner from the side of a cover with a lock. The misoperation preventing pin is operative to project/recede in the open state of the cover with the lock while fracturing when pushing the push button with prescribed force or more in the state of projecting toward the push button to regulate pushing operation. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a manual operation device of an architectural shutter provided at a doorway of a building or the like.
[0002]
[Prior art]
Conventionally, as a manual operation device of this type of architectural shutter, for example, as disclosed in Patent Document 1, three operation switches for opening, stopping, or closing a shutter curtain by an opening and closing device at normal times, and a fire or the like. 2. Description of the Related Art A manual closing mechanism for releasing a brake device in a switchgear to close a shutter curtain by its own weight in an emergency is known.
[0003]
In such a manual operation device, usually, the operation switch is stored in a storage box covered by a lock lid, and a person without a duplicate key can freely operate the shutter curtain such as opening and closing. Is not possible. In addition, the manual closing mechanism is pivotably supported near the side of the locking lid, and pulls a wire for releasing the brake device substantially flush with the front surface of the storage box to return the brake device to the braking state. A return lever which is inclined and protruded forward from the front surface of the storage box and which is operated to a release position for releasing the brake device by loosening the wire, a lock mechanism for locking the return lever to the braking position, and this lock mechanism And a push button for releasing the brake device by releasing the lock state of the brake lever and changing the return lever to the release position.
[0004]
[Patent Document 1]
JP-A-9-324590 (pages 2-4, FIGS. 1, 3-10)
[0005]
[Problems to be solved by the invention]
By the way, the push button is provided in the storage box together with the operation switch in order to prevent an erroneous operation, and a window which can be pierced is formed in a portion of the lid with the lock facing the push button. For this reason, there is a possibility that it takes time and hesitation to press the push button in an emergency. Another problem is that the appearance is poor.
[0006]
The present invention has been made in view of such a point, and the object thereof is to improve the arrangement of push buttons of a manual closing mechanism, etc., in order to prevent erroneous operations and to improve operability in an emergency. And a manual operation device for an architectural shutter which is excellent in appearance.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 is an operation switch for opening, stopping, or closing a shutter curtain in a normal state, and a manual closing for releasing a brake device to close the shutter curtain by its own weight in an emergency. The operation switch is housed in a storage box covered by a lock lid, and the manual closing mechanism is a manual switch of a building shutter provided adjacent to a side of the lock lid. In the operating device, the manual closing mechanism has a substantially L-shape as a whole, a central portion is supported so as to be swingable around a support shaft, and a wire for releasing the brake device is connected to one end. A braking posture in which the end is pulled substantially flush with the front surface of the storage box and the brake device is returned to the braking state by pulling the wire, and the other end is inclined forward from the front surface of the storage box and protrudes. A return lever operated to a release position to release the ear and release the brake device, a lock mechanism for locking the return lever to the braking position, and a lock state released by the lock mechanism to release the return lever to the release position. And a push button for changing and releasing the brake device. In addition, the push button is provided substantially flush with the front surface of the storage box near the lower side of the return lever, and an erroneous operation prevention pin for restricting the push operation of the push button can be protruded and retracted from the side of the lock lid. The erroneous operation prevention pin is provided so that it can be moved in and out with the lid with the lock opened and protrudes toward the push button to break when the push button is pressed with a predetermined force or more in a state where the push operation is restricted. Configuration.
[0008]
In this configuration, the push button of the manual closing mechanism is provided substantially flush with the front surface of the storage box like the return lever in the braking position, so that the appearance is improved and the push button is used in an emergency such as a fire. There is no trouble or hesitation to press, and the operability is enhanced. In addition, when the push button is pressed, the erroneous operation is prevented since the brake device is not released by the lock mechanism and the shutter curtain is not closed by its own weight unless the erroneous operation prevention pin is broken by pressing it more than a predetermined force. Will be. Furthermore, when inspecting whether the shutter curtain is closed by its own weight, open the lock with the lock and move the erroneous operation prevention pin, then press the push button to inspect the shutter curtain's own weight closure without breaking the erroneous operation prevention pin. It can be performed.
[0009]
The invention according to claim 2 provides a specific form of the lock mechanism in the manual operation device of the architectural shutter according to claim 1. That is, the lock mechanism is supported so as to be swingable about a support shaft, and a lock member having a hook portion formed at one end to be engaged with an engagement pin provided on the return lever, and another end of the lock member. A connecting member for connecting the push button, and a spring for urging the lock member in a direction of engagement with the engagement pin about the support shaft, and the push button can swing around the support shaft. It is configured to support. With this configuration, when the push button is pressed, the push button rotates around the support shaft, and with this rotation, the operating force is transmitted to the lock member via the connecting member, and the urging force of the spring is reduced. When the lock member rotates around the support shaft and the hook of the lock member is disengaged from the engagement pin on the return lever side, the return lever changes to the release position, and the wire is loosened. The brake device will be released.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an overall configuration of a building shutter provided with a manual operation device according to an embodiment of the present invention, wherein 1 is a shutter curtain for opening and closing an opening 2 of a building, and 3 is on an upper edge side of the opening 2 of the building. A shutter opening / closing device attached together with a winding drum (not shown). Although not shown, the shutter opening / closing device 3 is connected to a winding drum via a chain or the like so as to be able to transmit power. The opening / closing portion 2 is opened by winding the shutter curtain 1 around the drum by forward / reverse rotation of the take-up drum, or the opening portion 2 is closed by sending out the shutter curtain 1 from the drum.
[0011]
Although not shown, the shutter switch 3 has a built-in brake device that shuts off power transmission between the motor and the output shaft, and is provided above the shutter switch 3 in correspondence with the brake device. An automatic closing device 5 is attached. Although not shown, the automatic closing device 5 has a built-in solenoid, and the solenoid operates based on a signal from a sensor that detects heat or smoke caused by a fire, and the operating plate 6 extends out of the shutter switch 3. By tilting the brake lever 7 of the brake device, the brake device is released, and the shutter curtain 1 is closed by its own weight. Further, one end of an operation wire 9 is connected to the automatic closing device 5, and the other end of the operation wire 9 is provided on a side edge side of the opening 2 of the building according to an embodiment of the present invention. When the push button 22 of the manual operation device 10 described below is pressed and operated, the operation plate 6 of the automatic closing device 5 tilts the brake lever 7 in the same manner as when the solenoid is operated, and releases the brake device. Then, the shutter curtain 1 closes under its own weight.
[0012]
As shown in detail in FIGS. 2 to 5, the manual operation device 10 has a box-shaped storage box 11 and an opening 12 provided in a front plate 11 a of the storage box 11 with hinges 13, 13 as fulcrums. An opening / closing lid 15 with a lock 14 that is freely openable and closable, an operation switch unit 16 housed in a storage box 11 covered by the opening / closing lid 15, and a left side of the opening / closing lid 15 are provided in proximity to each other. And a manual closing mechanism 20. The operation switch unit 16 has three operation switches 16a, 16b, 16c for opening, stopping, and closing, and is connected via a cable to a control panel (not shown) for controlling the shutter opening and closing device 3. When the operation switches 16a to 16c are pressed during a normal power supply, the shutter curtain 1 is opened, stopped or closed. The inside of the storage box 11 is partitioned by a partition wall 43 into a side where the operation switch unit 16 is disposed and a side where the manual closing mechanism 20 is disposed.
[0013]
The manual closing mechanism 20 is used to manually close the shutter curtain 1 by its own weight in an emergency such as a fire, and returns as two upper and lower operation members facing the opening 12 of the front plate 11a of the storage box 11. It has a lever 21 and a push button 22. The return lever 21 includes a surface portion 21a facing the opening 12 of the front surface portion 11a of the storage box 11, and a pair of left and right side portions 21b, 21b bent at right angles from both sides of the surface portion 21a. The whole is substantially L-shaped when viewed, and the central portion of the return lever 21 is swingably supported around a support shaft 23 passing through the left and right side portions 21b, 21b. A wire fixing shaft 24 is rotatably supported between the left and right side portions 21b, 21b at the end of the return lever 21 extending to the rear side of the storage box 11, and the wire fixing shaft 24 is provided inside the storage box 11. The inner wire 9a of the working wire 9 introduced into the inner wire 9 is fixed. The outer wire 9b of the operation wire 9 is fixed to a wire attachment portion 25 provided in the storage box 11 via an adjuster screw portion 26 and a nut 27. Then, the return lever 21 pulls the operating wire 9 (more specifically, the inner wire 9a) with its surface portion 21a and its main end substantially flush with the front plate 11a of the storage box 11 to brake the brake device. The braking posture (the state shown by the solid line in FIG. 4) and the surface portion 21a and the end mainly on the surface portion 21a are tilted forward from the front plate 11a of the storage box 11 to protrude, and the operation wire 9 is moved. The brake is operated in a release posture (a state shown by a virtual line in FIG. 4) in which the brake device is released by loosening.
[0014]
The push button 22 has a surface plate 22a facing the opening 12 of the front plate 11a of the storage box 11 in the vicinity of the lower side of the surface portion 21a of the return lever 21, and the partition wall joined to the back surface of the front plate 22a. 43 and a side plate 22b adjacent to the side plate 43. The side plate 22b of the push button 22 extends to the support shaft 23 of the return lever 21 and is supported so as to be able to swing around the support shaft 23. Then, when the front plate 22a of the push button 22 is pressed, the lock state by the lock mechanism 30 that locks the return lever 21 in the braking state is released, and the return lever 21 is changed to the release position, so that the brake device is released. Has become.
[0015]
The lock mechanism 30 is swingably supported around the support shaft 31 near the upper side of the wire attachment portion 25, and is engaged at one end with an engagement pin 32 provided between left and right side portions 21 a of the return lever 21. A locking member 33 having a hook portion 33a formed thereon, a rod-shaped connecting member 34 for connecting the other end of the locking member 33 and the side plate 22b of the push button 22, and an intermediate portion of the connecting member 34 In the direction in which the lock member 33 is engaged with the engagement pin 32 around the support shaft 31 by being suspended between the spring hook portion 34a and the support shaft 23 which is the swing center of the return lever 21 and the push button 22 (see FIG. And a tension coil spring 35 biased in the counterclockwise direction in FIG.
[0016]
Further, an erroneous operation prevention pin 40 that regulates the pushing operation of the push button 22 is provided in the storage box 11 corresponding to the push button 22. The erroneous operation prevention pin 40 is made of a synthetic resin, and slides along a guide hole 42 provided in a lower support plate 41 for supporting the operation switch unit 16 as shown in detail in FIGS. A possible operating portion 40a, a large protrusion 40b formed integrally with the end of the operating portion 40a on the partition wall 43 side and capable of being inserted into an insertion hole 44 provided in the partition wall 43, And the formed small protrusion 40c. When the cover 15 is opened, the operation portion 40a of the erroneous operation prevention pin 40 is slidable, and the large operation portion 40b and the small protrusion portion 40c of the erroneous operation prevention pin 40 are moved by the sliding operation. When the push button 22 is pushed with a predetermined force (about 7 kgf (68.6 N)) or more in this restricted state, the small protrusion is projected. The portion 40c is provided so as to be broken by the side surface portion 22b of the push button 22.
[0017]
1, 3 and 4, reference numeral 46 denotes an electric conduit connected to the storage box 11 of the manual operation device 10, in which the operating wires 9 and cables are wired. It has become.
[0018]
Therefore, in the manual operation device 10 of the above embodiment, since the push button 22 of the manual closing mechanism 20 is provided substantially flush with the front plate 11a of the storage box 11 similarly to the return lever 21 in the braking posture, The appearance is improved, and it is not necessary to take time and hesitation to press the push button 22 in an emergency such as a fire, so that the operability can be improved. In addition, when the push button 22 is pushed, the erroneous operation prevention pin 40 (specifically, the small protrusion 40c) must be pressed firmly to a predetermined force or more to release the lock state by the lock mechanism 30 to release the brake device and thus the shutter curtain 1. Since the self-weight is not closed, erroneous operation can be prevented.
[0019]
Further, when periodically inspecting whether or not the shutter curtain 1 is closed by its own weight, the opening / closing lid 15 with the lock 14 is opened and the erroneous operation prevention pin 40 is moved from the state shown in FIG. When the push button 22 is pressed after the moving operation to the state shown in the figure, it is possible to inspect the closing of the shutter curtain 1 by its own weight without breaking the erroneous operation prevention pin 40, and thus has an effect excellent in practicality. .
[0020]
It should be noted that the present invention is not limited to the above embodiment, but includes various other embodiments. For example, in the above embodiment, in the lock mechanism 30 that locks the return lever 21 in the braking posture, the spring of the connecting member 34 is used as a spring that urges the lock member 33 around the support shaft 31 in the direction of engagement with the engagement pin 32. Although a tension coil spring 35 is used between the hook portion 34a and the support shaft 23 which is the swing center of the return lever 21 and the push button 22, the present invention uses a lock coil instead of the tension coil spring 35. A torsion spring or the like mounted on the outer periphery of the support shaft 31 which is the center of the swing of the member 33 may be used.
[0021]
【The invention's effect】
As described above, according to the manual operation device of the architectural shutter of the present invention, since the push button of the manual closing mechanism is provided substantially flush with the front surface of the storage box, the appearance is improved, and in an emergency, Operability can be improved, and erroneous operation of the push button can be prevented by the erroneous operation prevention pin. Further, at the time of inspection, it is possible to inspect the closing of the shutter curtain by its own weight without breaking the erroneous operation prevention pin, which has an effect excellent in practicality.
[0022]
In particular, in the invention according to claim 2, since the change of the return lever from the braking posture to the releasing posture and the release of the brake device can be realized by the pressing operation of the push button by the lock mechanism having a simple configuration, the embodiment is implemented. This is advantageous in aiming.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an architectural shutter according to an embodiment of the present invention.
FIG. 2 is a front view in which a part of the manual operation device of the shutter is cut away.
FIG. 3 is a sectional view taken along line KK of FIG.
FIG. 4 is a sectional view taken along line LL in FIG. 2;
FIG. 5 is a bottom view of the manual operation device with a storage box main body removed.
FIG. 6 is an enlarged sectional view taken along line MM in FIG. 3;
FIG. 7 is a sectional view taken along line NN of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shutter curtain 9 Operating wire 10 Manual operation device 11 Storage box 11a Front panel 14 Lock 15 Opening / closing lid 16a, 16b, 16c Operation switch 20 Manual closing mechanism 21 Return lever 22 Push button 23 Support shaft 30 Lock mechanism 31 Support shaft 32 Engage Pin 33 Lock member 33a Hook portion 34 Connecting member 35 Tension coil spring 40 Misoperation prevention pin

Claims (2)

Normally equipped with an operation switch for opening, stopping or closing the shutter curtain, and a manual closing mechanism for releasing the brake device in order to close the shutter curtain by its own weight in an emergency, the operation switch is provided by a lid with a lock. Stored in a covered storage box, the manual closing mechanism is a manual operation device of an architectural shutter provided adjacent to a side of a lid with a lock,
The manual closing mechanism is
The whole is substantially L-shaped, the central part is swingably supported around the support shaft, the one end is connected with a wire for releasing the brake device, and the other end is the front face and the substantially face of the storage box. A return operation in which a braking posture in which the wire is pulled to return the brake device to a braking state and a release posture in which the other end is inclined forward from the front surface of the storage box to protrude and loosen the wire to release the brake device at one time. Lever and
A lock mechanism for locking the return lever to the braking position,
A push button for releasing the locked state by the lock mechanism, changing the return lever to the release position, and releasing the brake device,
The push button is provided substantially flush with the front of the storage box near the lower side of the return lever, and an erroneous operation prevention pin for restricting the push operation of the push button can be protruded and retracted from the side of the lock lid. The erroneous operation prevention pin is provided so that it can be operated in and out with the lock lid opened, and protrudes toward the push button so as to break when the push button is pressed with a predetermined force or more in a state where the push operation is restricted. A manual operation device for a building shutter, which is provided. The lock mechanism is swingably supported around a support shaft, and has a lock member formed at one end with a hook portion that engages with an engagement pin provided on the return lever. The push button includes a connecting member that connects the button and a spring that urges the lock member around the support shaft in a direction to engage with the engagement pin, and the push button is supported to be swingable about the support shaft. A manual operation device for an architectural shutter according to claim 1.

Images