JP3631232B2 - Manual operating device for architectural shutter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manual operation device for an architectural shutter equipped at a doorway of a building.
[0002]
[Prior art]
Conventionally, as a manual operation device for 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 open / close device at normal time, and fire, etc. It is known to have a manual closing mechanism for releasing a brake device in an opening / closing machine in order to close the shutter curtain by its own weight in an emergency.
[0003]
In such a manual operation device, the operation switch is usually stored in a storage box covered with a lockable lid, and a person who does not have the key is arbitrarily operated to open and close the shutter curtain. Can not be. In addition, the manual closing mechanism is supported in a swingable manner in the vicinity of the side of the lockable 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 a braking state. A return lever that is tilted forward and protrudes forward from the front of the storage box and is released to release the brake device by releasing the wire, a lock mechanism that locks the return lever in a braking position, and the lock mechanism And a push button for releasing the brake device by releasing the lock state and changing the return lever to the release posture.
[0004]
[Patent Document 1]
JP-A-9-324590 (page 2-4, FIG. 1, FIG. 3 to FIG. 10)
[0005]
[Problems to be solved by the invention]
By the way, in order to prevent an erroneous operation, the push button is provided in the storage box together with the operation switch, and a window that can be pushed through is formed at a portion of the lock lid facing the push button. For this reason, there is a possibility that it takes time and tricks to press the push button in an emergency. There is also the problem of poor appearance.
[0006]
The present invention has been made in view of the above points, and the object of the present invention is to improve the arrangement of the push button of the manual closing mechanism in particular, to prevent erroneous operation and to improve the ease of operation in an emergency. Therefore, it is intended to provide a manual operation device for an architectural shutter that is designed and excellent in appearance.
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 is directed to an operation switch for opening, stopping or closing the shutter curtain in a normal state, and a manual closing for releasing a brake device in order to close the shutter curtain by its own weight in an emergency. The operation switch is housed in a storage box covered by a lockable lid, and the manual closing mechanism is a manual shutter for an architectural shutter provided adjacent to the side of the lockable lid. In the operating device, the manual closing mechanism is substantially L-shaped as a whole, the center part is supported so as to be swingable around the support shaft, and a wire for releasing the brake device is connected to one end. A braking posture in which the end portion is substantially flush with the front surface of the storage box to pull the wire to return the brake device to a braking state, and the other end portion protrudes obliquely forward from the front surface of the storage box. A return lever operated to release the brake device by loosening the ear, a lock mechanism for locking the return lever to the braking position, and releasing the locked state by the lock mechanism to bring 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 almost flush with the front of the storage box near the lower side of the return lever, and an erroneous operation prevention pin that restricts the push operation of the push button can be moved in and out from the side of the lock lid. This erroneous operation prevention pin is provided so that it can be moved in and out with the cover with the lock open, and in the state where it protrudes closer to the push button to restrict its pushing operation, it is broken when the push button is pressed with a predetermined force or more. The configuration.
[0008]
In this configuration, the push button of the manual closing mechanism is provided almost flush with the front of the storage box, just like the return lever in the braking position. There is no time and effort to push, and the ease of operation increases. In addition, when pushing the push button, if the push button is pushed harder than the predetermined force and the accidental operation prevention pin is not broken, the lock mechanism is released to release the brake device and the shutter curtain will not be closed by its own weight. Will be. Furthermore, when inspecting whether the shutter curtain is closed by its own weight, after opening the lock lid and moving the misoperation prevention pin, pressing the push button will inspect the shutter curtain for its own weight closure without breaking the misoperation prevention pin. It can be performed.
[0009]
The invention according to claim 2 provides a specific form of the locking mechanism in the manual operation device for the architectural shutter according to claim 1. That is, the lock mechanism is supported so as to be swingable around the 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, and the other end of the lock member. A connecting member that connects the push button and a spring that urges the lock member around the support shaft in a direction to engage with the engaging pin, and the push button can swing around the support shaft. It is set as the structure supported. In this configuration, when the push button is pressed, the push button rotates about the support shaft, and along with this rotation, the operating force is transmitted to the lock member via the connecting member, and the spring biasing force is applied. The lock member is turned around the support shaft and the engagement between the hook portion of the lock member and the engagement pin on the return lever side is released, so that the return lever changes to the release posture and the wire is loosened. The brake device is released.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows the overall construction of a building shutter equipped with a manual operation device according to an embodiment of the present invention, 1 is a shutter curtain for opening and closing the opening 2 of the building, 3 is on the upper edge side of the opening 2 of the building The shutter opening / closing machine is attached together with a winding drum (not shown), and this shutter opening / closing machine 3 is connected to the winding drum via a chain or the like so as to be able to transmit power, although not shown. The shutter curtain 1 is wound around the drum by the forward and reverse rotation of the take-up drum to open the opening 2, or the shutter curtain 1 is sent out from the drum to close the opening 2.
[0011]
Although not shown, the shutter opening / closing device 3 has a built-in brake device that cuts off power transmission between the motor and the output shaft. An automatic closing device 5 is attached. Although not shown, this automatic closing device 5 has a built-in solenoid, and the solenoid is actuated based on a signal from a sensor for detecting heat and smoke due to a fire, so that the operation plate 6 extends outside the shutter opening / closing device 3. By tilting the brake lever 7 of the brake device to be released, the brake device is released and the shutter curtain 1 is closed by its own weight. Further, one end of an operating wire 9 is connected to the automatic closing device 5, and the other end of the operating wire 9 is provided on the side edge side of the opening 2 of the building according to an embodiment of the present invention. When the manual operation device 10 is connected and a push button 22 (described later) of the manual operation device 10 is pressed, the operation plate 6 of the automatic closing device 5 tilts the brake lever 7 and releases the brake device in the same manner as when the solenoid is operated. Then, the shutter curtain 1 is closed by its own weight.
[0012]
As shown in enlarged detail in FIGS. 2 to 5, the manual operating device 10 has a box-shaped storage box 11 and an opening 12 provided on the 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 can be freely opened and closed, 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. And a manual closing mechanism 20. The operation switch unit 16 has three operation switches 16a, 16b, and 16c for opening, stopping, and closing, and is connected to a control panel that controls the shutter opening / closing device 3 via a cable (not shown). When the operation switches 16a to 16c are pressed at the normal time when the normal power is supplied, the shutter curtain 1 is opened, stopped, or closed. The storage box 11 is partitioned by the partition wall 43 into the arrangement side of the operation switch unit 16 and the arrangement side of the manual closing mechanism 20.
[0013]
The manual closing mechanism 20 is for manually closing the shutter curtain 1 by its own weight in the event of an emergency such as a fire, and is returned as two upper and lower operating members facing the opening 12 of the front plate 11a of the storage box 11. A lever 21 and a push button 22 are provided. The return lever 21 includes a surface portion 21a that faces the opening 12 of the front surface portion 11a of the storage box 11 and a pair of left and right side portions 21b and 21b that are 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 supported so as to be swingable around a support shaft 23 that penetrates the left and right side surfaces 21b, 21b. A wire fixing shaft 24 is rotatably supported between the left and right side surface portions 21b and 21b at the end of the return lever 21 extending to the back side of the storage box 11, and the wire fixing shaft 24 includes The inner wire 9a of the working wire 9 introduced into is fixed. The outer wire 9 b of the working 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. The return lever 21 has a surface portion 21a and an end mainly on the surface portion 21a that are substantially flush with the front plate 11a of the storage box 11, and pulls the operating wire 9 (specifically, the inner wire 9a) to brake the brake device. The braking posture (the state indicated by the solid line in FIG. 4) and the surface portion 21a and the end portion on the main side thereof tilt forward from the front plate 11a of the storage box 11 and protrude to protrude the operating wire 9. It is operated to a release posture (state indicated by phantom lines in FIG. 4) in which the brake device is released by loosening.
[0014]
The push button 22 is joined to the surface plate 22a facing the opening 12 of the front plate 11a of the storage box 11 near the lower side of the surface portion 21a of the return lever 21, and the partition wall And side plate 22b adjacent to 43. The side plate 22 b of the push button 22 extends to the support shaft 23 of the return lever 21 and is supported so as to be swingable around the support shaft 23. When the front plate 22a of the push button 22 is pressed, the lock mechanism 30 that locks the return lever 21 in the braking state is released and the return lever 21 changes to the release posture, so that the brake device is released. It has become.
[0015]
The lock mechanism 30 is supported so as to be swingable around the support shaft 31 in the vicinity of the upper side of the wire attachment portion 25, and is engaged with an engagement pin 32 provided between the left and right side portions 21a, 21a of the return lever 21 at one end. A locking member 33 formed with a mating hook portion 33 a, a rod-shaped connecting member 34 that connects the other end of the locking member 33 and the side plate 22 b of the push button 22, and an intermediate portion of the connecting member 34. A direction in which the locking member 33 is engaged with the engaging pin 32 around the supporting shaft 31 (between the spring engaging portion 34a and the supporting shaft 23 which is the swing center of the return lever 21 and the push button 22). It consists of a tension coil spring 35 that urges counterclockwise in FIG.
[0016]
Further, corresponding to the push button 22, an erroneous operation prevention pin 40 that restricts the push operation of the push button 22 is provided in the storage box 11. This erroneous operation prevention pin 40 is made of synthetic resin and, as shown in enlarged detail in FIGS. 6 and 7, slide operation is performed along a guide hole 42 provided in the lower support plate 41 for supporting the operation switch unit 16. A possible operation part 40a, a large projection part 40b that is integrally formed at the end of the operation part 40a on the partition wall 43 side and that can be inserted into an insertion hole 44 provided in the partition wall 43, and a tip of the large projection part 40b. And a small protrusion 40c formed. When the opening / closing lid 15 is opened, the operation portion 40a of the erroneous operation prevention pin 40 can be slid. By this sliding operation, the large protrusion 40b and the small protrusion 40c of the erroneous operation prevention pin 40 are separated from the partition wall 43. The push button 22 protrudes from the insertion hole 44 to the back side to restrict the pushing operation of the push button 22, and in this restricted state, a small protrusion is formed when the push button 22 is pushed with a predetermined force (about 7 kgf (68.6 N)) or more. The portion 40 c is provided so as to be broken by the side surface portion 22 b of the push button 22.
[0017]
1, 3, and 4, reference numeral 46 denotes a conduit connected to the storage box 11 of the manual operation device 10, and the operation wire 9 and the cable are arranged in the conduit 46. It has become.
[0018]
Therefore, in the manual operation device 10 of the above embodiment, the push button 22 of the manual closing mechanism 20 is provided substantially flush with the front plate 11a of the storage box 11 like the return lever 21 in the braking posture. In addition to improving the appearance, it is possible to improve the ease of operation without taking time and hesitation to press the push button 22 in an emergency such as a fire. In addition, when the push button 22 is pushed, it is strongly pushed to a predetermined force or more and the erroneous operation prevention pin 40 (specifically, the small protrusion 40c) is not broken, so that the lock mechanism 30 is released to release the brake device, and thus the shutter curtain 1. Since its own weight is not closed, erroneous operation can be prevented.
[0019]
Furthermore, when periodically inspecting whether the shutter curtain 1 is closed by its own weight or the like, the open / close lid 15 with the lock 14 is opened and the erroneous operation preventing pin 40 is changed from the state shown in FIG. When the push button 22 is pushed after moving to the state shown in the figure, it is possible to inspect the self-closing of the shutter curtain 1 without breaking the erroneous operation prevention pin 40, and thus has an excellent practical effect. .
[0020]
In addition, this invention is not limited to the said embodiment, It includes other various embodiment. For example, in the above-described 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 biases the lock member 33 around the support shaft 31 in the direction of engaging with the engagement pin 32. The tension coil spring 35 spanned 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 is used. You may use the torsion spring etc. which were attached to the outer periphery of the spindle 31 which is the rocking | fluctuation center of the member 33. FIG.
[0021]
【The invention's effect】
As described above, according to the manual operation device for an architectural shutter in the present invention, the push button of the manual closing mechanism is provided substantially flush with the front surface of the storage box, so that the appearance is improved and in an emergency. In addition, it is possible to prevent the erroneous operation of the push button by the erroneous operation preventing pin. In addition, at the time of inspection, it is possible to inspect the shutter curtain for its own weight closure without breaking the erroneous operation prevention pin, and it has an excellent practicality effect.
[0022]
In particular, the invention according to claim 2 can realize the change of the return lever from the braking posture to the release posture and the release of the brake device by the pushing operation of the push button by the lock mechanism having a simple configuration. It is advantageous in planning.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a building shutter according to an embodiment of the present invention.
FIG. 2 is a front view in which a part of the manual operation device for the shutter is cut out.
3 is a cross-sectional view taken along the line KK of FIG.
4 is a cross-sectional view taken along line LL in FIG.
FIG. 5 is a bottom view of the manual operation device with a storage box body removed.
6 is an enlarged sectional view taken along line MM in FIG. 3;
7 is a cross-sectional view taken along line NN in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shutter curtain 9 Actuation wire 10 Manual operation apparatus 11 Storage box 11a Front plate 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 Engagement Pin 33 Locking member 33a Hook 34 Connecting member 35 Tension coil spring 40 Misoperation prevention pin

Claims (2)

It is equipped with an operation switch for opening, stopping or closing the shutter curtain in normal times and a manual closing mechanism for releasing the brake device in order to close the shutter curtain by its own weight in case of an emergency. Housed in a covered storage box, the manual closing mechanism is a manual operation device for a building 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 supported so as to be swingable around the support shaft, a wire for releasing the brake device is connected to one end, and the other end is substantially the same as the front surface of the storage box The return is operated in a braking posture in which the wire is pulled to return the braking device to the braking state and a release posture in which the other end is inclined forward from the front of the storage box and the wire is loosened to release the braking device. Lever,
A lock mechanism for locking the return lever to a braking posture;
A push button for releasing the brake device by releasing the lock state by changing the return lever to the release posture by releasing the lock state by the lock mechanism;
The push button is provided near the front of the storage box near the lower side of the return lever, and an erroneous operation prevention pin that restricts the push operation of the push button can be projected 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 lock lid opened, and in a state where the push button is pushed and pressed more than a predetermined force in a state where the push operation is restricted and the push operation is restricted, the pin is broken. A manual operating device for an architectural shutter, which is provided. The lock mechanism is supported so as to be swingable 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, and the other end of the lock member and the push member. The 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. The push button is supported to be swingable around the support shaft. The manual operation device for an architectural shutter according to claim 1.

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