JP6009230B2 - Switchgear - Google Patents

Description

  The present invention relates to an opening / closing device that has an opening / closing body that opens and closes, and has a function of stopping the closing movement when the opening / closing body abuts against an obstacle during the closing movement, for example, a shutter curtain is opened / closed The present invention can be used for various opening / closing devices such as a shutter device used for management and disaster prevention combined with the body, an awning device, and a smoke-proof banner device.

  In the management shutter device that is an opening and closing device that is an opening and closing body in which the shutter curtain is opened and closed, the shutter curtain for opening and closing the opening such as the entrance is opened and closed by the operation of the operation device, Stop moving. In addition, in the shutter device for disaster prevention, which is also an open / close device, the shutter curtain having a disaster prevention function such as smoke prevention is closed and moved in the event of an abnormal situation such as a fire. A disaster prevention zone is formed. In such a management shutter device, a shutter device for disaster prevention, and a shutter device for both management and disaster prevention, there is an obstacle in the closing direction of the shutter curtain, and the shutter curtain that is being moved closes against this obstacle. When the contact is made, the closing movement of the shutter curtain is stopped. An apparatus for executing this stop is disclosed in Patent Document 1 below.

  A shutter device that is an opening / closing device disclosed in Patent Document 1 includes a brake device for stopping and moving a shutter curtain that is an openable / closable opening / closing body by turning on / off, and the brake The part spanned between the slide member urged by a spring, which is an elastic urging member, in the forward direction to switch the device from on to off, and the immovable member that is immobile with respect to the shutter curtain When the closing shutter curtain is in contact with an obstacle, the shutter curtain and the string member are mechanically coupled to each other, and the string member is attached to the weight of the shutter curtain. A mechanical coupling device that exerts a tension force based thereon, and is arranged between the string-like member and the slide member in order to connect the string-like member and the slide member. And a relay device that moves the slide member in the reverse direction to switch the brake device from OFF to ON against the biasing force of the spring when the tension force acts on the string-like member. It has become a thing.

  For this reason, in this shutter device, when the shutter curtain that is being closed is in contact with an obstacle, the string-like member and the shutter curtain are mechanically coupled by the mechanical coupling device, and the shutter curtain is attached to the string-like member. Tension force based on its own weight acts, and the slide member on which this tension force acts via the relay device moves in the backward direction to switch the brake device from OFF to ON against the urging force of the spring, thereby preventing the obstacle. Since the shutter curtain that has come into contact is closed and stopped by the brake device that is turned on, a stop device for stopping the shutter curtain is configured by a slide member, a brake device, or the like.

JP 2010-59767 A

  For example, in a large span shutter device with a large shutter curtain width, the shutter curtain is heavy, so the brake device that stops the shutter curtain that is in contact with an obstacle during the closing movement is also enlarged. Therefore, a spring having a large spring force is used as a spring for elastically urging the brake device in a forward direction to a slide member that is slidable in the forward / backward direction to switch the brake device on and off. Will be.

  According to this, in order to switch the brake device from OFF to ON when the shutter curtain that is moving in close contact comes in contact with the obstacle, the slide member must be moved in the backward direction against the spring having a large spring force. In addition, as the slide member moves in the backward direction, the spring is compressed, so that the spring force gradually increases, and thus the slide member moves in the backward direction against the spring whose magnitude of the spring force changes. To be moved to.

  In addition, even if the shutter curtain is heavy as described above, the lower part of the shutter curtain is the weight of the shutter curtain after the contact with the obstacle. For example, the entire weight of the shutter curtain may not act as a tension on the string-like member as it is because it is curved downward and a part of the shutter curtain is landed. For this reason, even if this tension force is small, in order to switch the brake device from OFF to ON, it is required to move the slide member in the backward direction against a spring having a large spring force.

  An object of the present invention is to provide a slide member with a large elastic urging force in order to switch the brake device from off to on even when the tension force acting on the string-like member is small when the opening / closing body abuts against an obstacle. An object of the present invention is to provide an opening / closing device which can be moved in the backward direction against the elastic biasing member.

  An opening / closing device according to the present invention includes a brake device for stopping and moving an opening / closing movable body that can be opened and closed by turning on and off, and an elastic biasing member in a forward direction for switching the brake device from on to off. A biased slide member, a string-like member having a portion spanned between the opening / closing body and an immovable member immovable with respect to the opening / closing body, and the opening / closing body in a closing movement A mechanical coupling device that mechanically couples the opening and closing body and the string-like member when a contact is made with an obstacle, and applies a tension force based on the weight of the opening and closing body to the string-like member, and the string In order to connect the slide member and the slide member, the slide member is disposed between the strap member and the slide member, and when the tension acts on the strap member, the slide member is biased by the elastic biasing member. Against the brake device An opening / closing device configured to move in a backward direction that is switched from off to on, wherein the relay device moves the slide member in the backward direction and the string for causing the movement of the slide member. The transmission load changing device has a relationship with the tension force of the shaped member so that the tension force for retracting the slide member does not increase as the slide member moves in the backward direction. It is a feature.

  In this opening / closing device, the relay device determines the relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing this movement, as the slide member moves in the backward direction. Since the transmission load changing device has a relationship that does not increase the tension force for retreating, the brake device can be operated even if the tension force acting on the string-like member is small when the opening / closing body abuts against the obstacle. In order to switch from OFF to ON, the slide member can be moved in the backward direction against the elastic biasing member having a large elastic biasing force, and the slide member is elasticized as the slide member moves in the backward direction. Even if the force gradually increases, the slide member can be moved in the backward direction.

  As described above, as the slide member moves in the backward direction, the tension force for moving the slide member does not increase may mean that the tension force decreases or the tension force changes. It may not be, or a combination of these may be used. Further, the tension force for retracting the slide member may not increase through the total amount of movement of the slide member in the backward direction, or a part of the total amount of movement of the slide member in the backward direction. In this amount of movement, the tension for retracting the slide member may not increase.

  In the present invention, as described above, according to the relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the relay device, the slide member moves in the backward direction. In order to obtain a transmission load changing device that does not increase the tension for retracting the slide member, the relay device can be configured with an arbitrary structure.

  For example, in the case where the above-described string-like member is the first string-like member, the above-described relay device includes the first rotating member to which the end of the first string-like member is coupled, and one end. The second end of the second string-like member connected to the slide member is connected, and the second turning member to which the rotation of the first turning member is transmitted is configured. It is.

  In the case where the relay device is configured in this way, the relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the relay device is determined. In order to obtain a transmission load changing device that does not increase the tension for moving the slide member backward as the slide member moves in the backward direction, the relay device may be configured as follows, for example. it can.

  The first example is an elastic urging member that acts on the second rotating member via the second string-like member to transmit the rotation transmitted between the first rotating member and the second rotating member. In accordance with the increase in the elastic biasing force, the rotation transmission is such that the tension required to rotate the second rotating member against the elastic biasing force does not increase.

  In this example, the second urging member is rotated against the elastic urging force in accordance with an increase in the elastic urging force of the elastic urging member acting on the second rotating member via the second string-like member. The fact that the tension required for the increase does not increase may mean that the magnitude of the tension is reduced, the magnitude of the tension does not change, or a combination thereof.

  In the second example, the elastic urging force of the elastic urging member acts on the torque of the second rotating member that acts via the second lace member, and the first lace member that counters this torque. The relationship between the torque of the first rotating member and the torque of the first rotating member does not increase as the torque of the second rotating member increases.

  In this example, as the torque of the second rotating member increases, the torque of the first rotating member does not increase as the torque of the first rotating member does not increase. The magnitude of the torque of one rotating member may not change, or a combination of these may be used.

  The third example is a load transmitted from the second rotating member to the first rotating member as the second rotating member rotates in the direction of retracting the slide member via the second string-like member. Among them, the component for rotating the first rotating member is made small.

  In this example, as the second rotating member rotates in the direction of retracting the slide member via the second string-like member, among the loads transmitted from the second rotating member to the first rotating member, In order to reduce the component for rotating the first rotating member, the load transmitted from the second rotating member to the first rotating member through the total movement amount of the slide member in the backward direction. Among them, the component for rotating the first rotation member may be reduced, or the second movement may be performed in a part of the total movement amount in the backward movement direction of the slide member. Of the load transmitted from the moving member to the first rotating member, the component for rotating the first rotating member may be reduced.

  The fourth example is a load transmitted from the second rotating member to the first rotating member as the second rotating member rotates in the direction of retracting the slide member via the second string-like member. And an angle formed by a component for rotating the first rotating member in the load is increased.

  In this example, the load transmitted from the second rotating member to the first rotating member as the second rotating member rotates in the direction of retracting the slide member via the second string-like member, and this In order to increase the angle formed by the component for rotating the first rotating member of the load, the first moving member moves from the second rotating member to the first through the total amount of movement of the slide member in the retracting direction. The angle formed by the load transmitted to the rotating member and the component for rotating the first rotating member of the load may be increased, or the slide member may be moved backward. A load transmitted from the second rotating member to the first rotating member and a component for rotating the first rotating member of the total amount of movement are transmitted from the second rotating member to the first rotating member. The angle formed may be increased.

  In the fifth example, as the second rotating member rotates in the direction of retracting the slide member via the second string-like member, the contact point between the second rotating member and the first rotating member is It is to keep away from the rotation center part of the 2nd rotation member.

  In this example, as the second rotating member rotates in the direction of retracting the slide member via the second string-like member, the contact point between the second rotating member and the first rotating member is the second time. To move away from the center of rotation of the moving member, the contact point between the second rotating member and the first rotating member through the total amount of movement of the slide member in the backward direction is the second rotating member. It may be arranged to move away from the center of rotation, or the contact point between the second rotation member and the first rotation member at a part of the total movement amount in the backward direction of the slide member. It is also possible to move away from the center of rotation of the second rotation member.

  Further, in the present invention, in order to transmit the rotation between the first rotation member and the second rotation member, one of the rotation members of the first rotation member and the second rotation member. A part may be brought into contact with the other, or the second rotating member and the first rotating member may be brought into contact with a rotating member rotatably attached to the first rotating member, and the rotating member may be You may make it transmit rotation between a 1st rotation member and a 2nd rotation member.

  According to the latter, the transmission of the rotation performed between the first rotation member and the second rotation member can be smoothly performed by the rotation of the rotation member with no friction or less friction. .

  In addition, the second rotating member is provided with an arc portion having an arc shape centered on the rotation center portion of the first rotating member at the end of the rotation of the second rotating member. You may make it the contact part with the 2nd rotation member provided in the member contact this circular arc part in the final stage of rotation of a 2nd rotation member.

  According to this, the first rotating member is rotated by the tension of the first string-like member, and at the end of the rotation of the second rotating member when the amount of rotation increases, the first rotating member The contact portion with the second rotation member provided comes into contact with the arc portion provided on the second rotation member, and the arc portion at this time is the rotation center of the first rotation member. Since the arc shape is centered on the part, at the end of the rotation of the second rotating member, the first rotating member rotates in an idle state relative to the second rotating member, Thereby, even after the brake device is turned on, the second rotating member can be prevented from excessively moving the slide member in the backward direction via the second string-like member.

  Further, in the present invention, the relay device includes a delay for delaying the rotation of the second rotating member or the first rotating member when the slide member moves in the forward direction by the elastic biasing force of the elastic biasing member. An apparatus may be provided.

  According to this, when the obstacle that contacts the opening and closing body is removed, the tension of the first string member disappears, and when the slide member moves in the forward direction by the elastic biasing force of the elastic biasing member, Since the rotation of the second rotating member or the first rotating member for moving the slide member in the forward direction is delayed by the delay device, the brake device is turned on as the slide member moves in the forward direction. It is possible to switch from OFF to OFF and restart the closing movement of the shutter curtain performed by this switching with a time delay from the removal of the obstacle.

  In the present invention described above, the first string-like member and the second string-like member may be a wire, a synthetic resin string, a chain such as a roller chain, or an arbitrary string member.

  In addition, the first string-like member may be exposed, for example, by being disposed along the surface of the opening / closing body, or by being disposed inside a guide member that guides the opening / closing movement of the opening / closing body. It is good also as a state which does not expose at least one part outside.

  Further, the mechanical coupling device described above can mechanically couple the string-like member and the opening-closing body when the closing-moving opening-closing body abuts on an obstacle to apply tension to the string-like member. As long as it is possible, it may be of any type and structure, and an example thereof is a structure in which a string-like member is sandwiched by a pair of sandwiching members such as lever members arranged on an opening / closing body, In another example, the rotating member is wound by winding the string-like member and engaging the engaging member with the rotating member disposed in the opening / closing body so as to be able to be fed out or another rotating member integrated with the rotating member. It is the structure which stops rotation of.

  Further, in the present invention, the above-described brake device may be a single device alone, or, for example, in combination with an electric motor device for opening and closing the open / close body, the open / close body is opened and closed. It may be a part of an opening / closing machine for making it happen.

  In the present invention, the slide member described above may be a member constituting an automatic closing device for closing and moving the opening / closing body that has reached the fully open position or the like, or May be a member constituting another device.

  Further, the present invention can be applied to an arbitrary opening / closing device in which an arbitrary opening / closing body is freely movable, and an example of the opening / closing device is a shutter device in which the opening / closing body is a shutter curtain, In addition, the present invention can be applied to various opening / closing devices such as an awning device and a smoke-proof banner device.

  Further, the shutter device may be a disaster prevention shutter device that forms a disaster prevention zone with a fully closed shutter curtain, or may be a management shutter device in which the shutter curtain opens and closes and stops moving by operation of the operation device, Or the shutter apparatus of management and disaster prevention combined use may be sufficient.

  The signal transmission method of the operation device of the management shutter device may be a wired method or a wireless method.

  According to the present invention, in order to switch the brake device from off to on even if the tension force acting on the string-like member is small when the opening / closing body abuts on an obstacle, the slide member is elastic with a large elastic biasing force. It is possible to obtain an effect that it can be moved in the backward direction against the urging member.

FIG. 1 is a front view showing the entirety of a shutter device serving as an opening / closing device according to an embodiment of the present invention. 2 is a cross-sectional view taken along line S2-S2 of FIG. FIG. 3 is a cross-sectional view showing the internal structure of the switch shown in FIGS. 1 and 2. 4 is a cross-sectional view taken along line S4-S4 of FIG. FIG. 5 is a front sectional view of the mechanical coupling device shown in FIG. FIG. 6 is a view similar to FIG. 4 showing when the shutter curtain abuts against an obstacle. FIG. 7 is a view similar to FIG. 5 illustrating the time of FIG. 6, and is a view illustrating when the engaging portion of the engaging member is engaged with the tooth portion of the rotating member. FIG. 8 is a view similar to FIG. 5 showing when the contact of the shutter curtain with the obstacle further proceeds, and when the engaging portion of the engaging member and the tooth portion of the rotating member are engaged. FIG. FIG. 9 is a partially enlarged view of FIG. FIG. 10 is a diagram illustrating an internal structure of the relay device illustrated in FIGS. 1 and 2. FIG. 11 is a front view showing the internal structure of the automatic closing device shown in FIGS. FIG. 12 is a plan view showing the internal structure of the automatic closing device. FIG. 13 is a view similar to FIG. 12 showing when the solenoid of the automatic closing device is energized and excited due to a disaster such as a fire. FIG. 14 is a view similar to FIG. 12 showing when energization and excitation of the solenoid of the automatic closing device are stopped. FIG. 15 is a view similar to FIG. 12 showing when the shutter curtain that is being closed and moved is in contact with an obstacle. FIG. 16 is a view similar to FIG. 10 showing an initial state when the relay device is activated by the shutter curtain coming into contact with the obstacle. FIG. 17 is a view similar to FIG. 10 showing the next state of FIG. FIG. 18 is a diagram similar to FIG. 10 showing the further next state of FIG. 17, and is a diagram showing a final state of the relay device.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The opening / closing device according to the present embodiment is a shutter device in which the opening / closing body is a shutter curtain. The shutter device according to the present embodiment is a combined management and disaster prevention shutter device. That is, the shutter device according to the present embodiment has a function as a management shutter device that opens, closes, and stops moving by operating the operation device so that the shutter curtain opens and closes an opening such as an entrance / exit. The shutter curtain that has a disaster prevention function such as smoke is closed and moved in the event of an abnormal situation such as a fire, so that this shutter curtain is fully closed to form a disaster prevention zone in a structure such as a building. And a function as a shutter device for disaster prevention.

  FIG. 1 shows the entire shutter device according to the present embodiment, and FIG. 1 shows a half in which the opening / closing movement direction is up and down, and the shutter curtain 1 that is closed and moved downward is closed to about half. It shows the closed state. The opening that is opened and closed by the shutter curtain 1 is an entrance 2 formed in the building. The entrance 2 includes a left and right building housing 3 such as a wall and a lower end of the shutter curtain 1 when fully closed. It is surrounded by a floor 4 and a ceiling member 5 that are counterpart members to be hit. A pair of left and right guide rails 6 slidably inserted at both ends in the left and right direction of the shutter curtain 1, in other words, both ends in the width direction of the shutter curtain 1, are attached to the left and right building housings 3. The shutter curtain 1 is moved up and down by being guided by these guide rails 6 as members.

  A shutter box 8 is disposed in the ceiling space 7 partitioned by the ceiling member 5 with respect to the entrance / exit 2 and this shutter box 8 is shown in FIG. As shown in the figure, it is coupled to a building housing 9 such as a falling wall existing in the ceiling space 7 with a coupler 10 such as a bolt. A take-up shaft 11 is horizontally accommodated in the shutter box 8, and the take-up shaft 11 is rotatably supported by the left and right side portions 8A and 8B shown in FIG. Yes. As shown in FIG. 1, an opening / closing machine 13 is connected to one end of the winding shaft 11 via a driving force transmission means 12 using a sprocket wheel and a roller chain. The opening / closing machine 13 serving as a driving device for driving the winding shaft 11 is also shown in FIG. 2, and the rotational force of the driving shaft 14 of the opening / closing machine 13 is driven by a driving sprocket attached to the driving shaft 14. A driving force transmission means 12 includes a wheel 12A, a driven sprocket wheel 12B attached to the one end of the winding shaft 11, and an endless roller chain 12C bridged between the sprocket wheels 12A and 12B. Then, it is transmitted to the winding shaft 11.

  As shown in FIG. 2, the opening / closing device 13 of the present embodiment is attached to a bracket member 15 coupled to one of the left and right side surface portions 8A and 8B of the shutter box 8. ing.

  As can be seen from FIG. 2, the shutter curtain 1 is wound around the winding shaft 11, and the upper end of the shutter curtain 1 is coupled to the outer peripheral surface of the winding shaft 11. Further, the lower part of the shutter curtain 1 from the winding shaft 11 is suspended below the ceiling member 5 through a slit 17 provided in the lintel 16 disposed on the ceiling member 5, and further the shutter. Both ends in the width direction of the curtain 1 are slidably inserted into the left and right guide rails 6 as described above. The lintel 16 is formed by lintel members 16A and 16B arranged to face each other, and a slit 17 is formed between the lintel members 16A and 16B.

  FIG. 3 is a cross-sectional view showing the internal structure of the switch 13. As shown in FIG. 3, the switch 13 includes a DC or AC electric motor device 18 and a brake device 19 arranged in parallel in the axial direction, and the drive shaft 14 described above includes an electric motor device. The rotary shaft is fixedly arranged at the center of the 18 rotating rotors 18A. A disc-shaped first brake member 20 is coupled to the end of the drive shaft 14 on the brake device 19 side. The brake device 19 is provided with a brake shaft 21 that is slidable by a fixed distance in the axial direction. The brake shaft 21 is coupled to a first brake member 20 and a second brake member 22 that faces in the axial direction. Has been. The brake shaft 21 and the second brake member 22 in the normal state are pressed toward the electric motor device 18 by the spring 23, so that the brake device 19 is pressed by the pressure contact between the first brake member 20 and the second brake member 22. Is on. Accordingly, the drive shaft 14 of the electric motor device 18 at this time is not rotated by the braking force of the brake device 19.

  On the other hand, when the solenoid 24 arranged in the brake device 19 is energized, the brake shaft 21 and the second brake member 22 slide in a direction away from the electric motor device 18 against the spring 23 by the magnetic force of the solenoid 24. To do. For this reason, the press contact between the first brake member 20 and the second brake member 22 is released, and the brake device 19 is turned off. Therefore, at this time, the drive shaft 14 of the electric motor device 18 can be rotated by energizing the coil 25.

  When the solenoid 24 is energized as described above, the brake device 19 is turned off. When the energization is stopped, the brake device 19 is turned on, so that the brake device 19 is electrically turned on and off. ing.

  In the present embodiment, as shown in FIG. 1, a control device 26 is attached to the switch 13, and the control device 26 electrically connects the electric motor device 18 and the brake device 19 of the switch 13. To control. The control device 26 may be attached to a member, means, device, or the like different from the opening / closing device 13, and the arrangement location thereof is arbitrary.

  Among the left and right building housings 3 shown in FIG. 1, in one building housing 3A, the shutter curtain 1 is opened and moved upward with respect to the doorway 2, closed and moved downward, and the movement is stopped. An operating device 30 is attached to perform the above. The operation device 30 is provided with an “open” button, a “close” button, and a “stop” button. Further, the shutter curtain 1 occupies most of the area of the shutter curtain 1, and a curtain body 1A whose upper end is coupled to the winding shaft 11 and a seat plate 1B provided at the lower end of the curtain body 1A. And has. The curtain body 1A of the present embodiment is formed by connecting a large number of slats vertically.

  The curtain main body 1A is an opening / closing body main body in the present embodiment, and the seat plate 1B is an end member in the present embodiment.

  When the shutter curtain 1 reaches the height position of the lintel 16 disposed on the ceiling member 5 as described above, or when the occupant plate 1B has the lintel 16 and the floor 4 as shown in FIG. When the shutter button 1 of the operating device 30 is operated when the shutter curtain 1 that has reached the halfway position is in the half-closed state (half-open state), the control device 26 receives a signal from the “close” button. Since the solenoid 24 of the brake device 19 is energized by this control, the brake device 19 is turned off. Thus, the shutter curtain 1 is rotated downward from the take-up shaft 11 by rotating the take-up shaft 11 and the drive shaft 14 by the dead weight of the shutter curtain 1, and the shutter curtain 1 that is closed and moved thereby is brought into the fully closed position. When it reaches, the control of the control device 26 to which a signal from a sensor (not shown) that detects the fully closed position is input, the energization to the solenoid 24 is cut off, and the brake device 19 is turned on by the spring 23. In addition, when the shutter curtain 1 is fully closed, or the shutter curtain 1 is in a half-open state where the seat plate 1B reaches the midway position between the lintel 16 and the floor 4 as shown in FIG. When the “open” button is operated in a half-closed state), the solenoid 24 of the brake device 19 is energized under the control of the control device 26 to which a signal from the “open” button is input. While being turned off, the coil 25 of the electric motor device 18 is energized under the control of the control device 26. For this reason, the drive shaft 14 rotates in the reverse direction, and this rotation is transmitted to the winding shaft 11 via the driving force transmission means 12 described above, and the shutter curtain 1 is moved to the winding shaft 11 by the reverse rotation of the winding shaft 11. It is rolled up and moved. When the shutter curtain 1 reaches the fully open position, the energization to the solenoid 24 is cut off and the brake device 19 is turned on by the spring 23 under the control of the control device 26 that receives a signal from a sensor (not shown) that detects the fully open position. At the same time, the power to the coil 25 is cut off by the control of the control device 26.

  Further, when the “stop” button is operated while the shutter curtain 1 is being closed and moved, the energization of the solenoid 24 is cut off by the control of the control device 26 to which a signal from the “stop” button is input. When the brake device 19 is turned on by the spring 23, the shutter curtain 1 stops at that position. Further, when the “stop” button is operated while the shutter curtain 1 is being opened and moved, the energization to the solenoid 24 is cut off by the control of the control device 26 to which a signal from the “stop” button is input. The brake device 19 is turned on by the spring 23, and energization of the coil 25 of the electric motor device 18 is interrupted by the control of the control device 26, whereby the shutter curtain 1 stops at that position.

  As can be seen from the above description, the floor 4 and the guide rail 6, the shutter box 8, the bracket member 15 coupled to the shutter box 8, the lintel 16 and the like with respect to the shutter curtain 1 that opens and closes. Therefore, the floor 4, the guide rail 6, the shutter box 8, the bracket member 15, the lintel 16, and the like are immovable members for the shutter curtain 1.

  The shutter curtain 1 is closed and moved not only by its own weight but by its own weight and the positive rotation of the drive shaft 14 driven by the electric motor device 18. You may make it make it.

  Further, as described above, the take-up shaft 11 that can be rotated forward and backward is provided with a return spring by a torsion coil spring or a mainspring spring in which a return force is accumulated during the closing movement of the shutter curtain 1, and the shutter curtain. One upward opening movement may be performed using the return force accumulated in the return spring as an auxiliary force.

  In the present embodiment, as shown in FIG. 3, a lever member 31 is disposed at the end of the brake shaft 21 opposite to the electric motor device 18 side. The lever member 31 penetrates the brake shaft 21 and includes a first portion 31A and a second portion 31B that are divided with the brake shaft 21 as a boundary. A first bent portion 31C is formed in the first portion 31A, and a second bent portion 31D is formed in the second portion 31B. When a load is applied to the first portion 31A in the A direction, that is, the side opposite to the electric motor device 18 side, the first portion 31A swings in the A direction with the second bent portion 31D as a fulcrum. 21 and the 2nd brake member 22 slide to A 'direction which is the same direction as A direction. For this reason, the brake device 19 can be turned off without energizing the solenoid 24.

  For this reason, the brake device 19 is also a mechanical brake device that is turned on / off by the action of the load in the A direction on the first portion 31A and the spring 23 when the load is released.

  In addition, it is performed by the below-mentioned automatic closing device 32 attached to the opening / closing machine 13 that the load to A direction acts on 31 A of 1st parts. As will be described later, the automatic closing device 32 is a mechanical control device for mechanically controlling the opening / closing machine 13 serving as a driving device for driving the shutter curtain 1.

  Further, when a load in the same direction as the A direction acts on the second portion 31B, the second portion 31B swings in the same direction as the A direction with the first bent portion 31C as a fulcrum. 21 and the 2nd brake member 22 slide to A 'direction. For this reason, the brake device 19 can be turned off without energizing the solenoid 24 at this time.

  Thus, applying a load in the same direction as the A direction to the second portion 31B can be performed manually. For this reason, the switch 13 according to this embodiment can turn off the brake device 19 by manual operation. Note that the second portion 31B may be omitted leaving the second bent portion 31D.

  4 is a cross-sectional view taken along the line S4-S4 of FIG. 1, showing the structure of the portion of the seat plate 1B of the shutter curtain 1 shown in FIG. As described above, the shutter curtain 1 of the present embodiment includes the curtain main body 1A and the seat plate 1B, and the seat plate 1B includes the fixed portion 70A and the movable portion 70B. The shutter curtain 1 has a curtain main portion 71A and a curtain sub-portion 71B. The curtain main portion 71A is composed of a curtain body 1A and a fixed portion 70A of the seat plate 1B. The sub part 71B is configured by a movable part 70B of the seat plate 1B. Accordingly, the curtain sub-portion 71B is disposed at the end of the shutter curtain 1 on the closing side. The curtain main portion 71A is an open / close body main portion in the present embodiment, and the curtain sub-portion 71B is an open / close body sub-portion in the present embodiment.

  Also, as shown in FIG. 4, in the seat plate 1B, a fixed portion 70A coupled to the curtain body 1A is formed by inner and outer members 75 and 76 both having a cross-sectional box shape. The movable portion 70B is movable up and down with respect to 70A. As can be seen from FIG. 4, the lower surfaces of the inner and outer members 75, 76 forming the fixed portion 70A are openings 78, and the upper end of the rising portion 79 of the movable portion 70B extends from the opening 78 to the fixed portion 70A. Is inserted into the interior space. At the upper end of the rising portion 79, extending portions 79A and 79B extending outward in the thickness direction of the shutter curtain 1 are formed, and these extending portions 79A and 79B are formed at the lower end of the inner member 76 of the fixing portion 70A. By riding on the upper surfaces of the formed projecting piece portions 76A and 76B, the lower limit of movement of the movable portion 70B relative to the fixed portion 70A is defined.

  A swinging member 81 that can swing up and down around a fulcrum shaft 80 extending in the width direction of the shutter curtain 1 is housed inside the fixed portion 70A. As shown in FIG. 6, when the movable part 70B is lifted with respect to the fixed part 70A, the swing member 81 is closed when the shutter curtain 1 is in the closed position, such as the obstacle 34 shown in FIG. When the abutting portion is in contact, the extending portion 79A of the rising portion 79 of the movable portion 70B pushes up the swinging member 81, so that the swinging member 81 swings upward about the fulcrum shaft 80.

  As shown in FIG. 4, the case 33 also shown in FIG. 1 is attached to the fixing portion 70A of the seat plate 1B, and the inside of the case 33 is also shown in FIG. . Inside the case 33, a rotating member 35 having a large number of teeth 35 </ b> A formed in the circumferential direction on the outer peripheral portion and a take-up reel 37, a shaft 41 serving as a fixed shaft fixed to the case 33. The rotating member 35 and the take-up reel 37 are combined and integrated. Further, the lower end of the lock wire 36 is coupled to the take-up reel 37, and the lower portion of the lock wire 36 is taken up by the take-up reel 37 and the upper portion is placed on the upper surface of the case 33. The hole 33A extends upward from the formed hole 33A. And the upper end of the wire 36 for a lock | rock is connected with the 1st rotation member 42 of the relay apparatus 38 shown by FIG. The relay device 38 is also provided with a second rotating member 43 and a rotary damper 44 serving as a delay device.

  Note that one or a plurality of guide rollers may be rotatably housed in the case 33 shown in FIG. 5 and guided by the guide rollers to guide the locking wire 36 to the take-up reel 37. .

  As shown in FIGS. 1 and 2, the relay device 38 is installed in the lintel 16 described above. For this reason, the locking wire 36 is bridged between the shutter curtain 1 on which the take-up reel 37 is arranged and the lintel 16 that is a stationary member that is stationary with respect to the shutter curtain 1 that opens and closes. The locking wire 36 that can be wound around the take-up reel 37 is also a flexible string-like member. When the shutter curtain 1 closes and moves downward, the shutter curtain 1 closes and moves while the locking wire 36 is fed out from the take-up reel 37 that rotates in the S direction around the shaft 41 in FIG.

  For this reason, the take-up reel 37 is a take-up member for taking up the lock wire 36 in a freely retractable manner.

  As shown in FIG. 4, a space 37A is formed inside the take-up reel 37 that is coupled and integrated with the rotating member 35, and a part of the space 37A is omitted in FIG. The return spring 39 shown in FIG. 1 is housed, and this return spring 39 wound around the outer periphery of the shaft 41, which is the rotation center axis of the rotary member 35 and the take-up reel 37, is used in this embodiment. The mainspring is an elastic member. One end of the return spring 39 is coupled to a shaft 41 that is a member on the case 33 side, and the other end is integrated with the rotating member 35. It is connected to a take-up reel 37. Therefore, when the rotary member 35 and the take-up reel 37 rotate in the S direction and the shutter curtain 1 closes and moves downward, the return spring 39 has a winding that rotates in the S direction to feed out the locking wire 36. The take-up reel 37 accumulates a take-up force for taking up the lock wire 36 by the take-up reel 37, the rotating member 35 and the take-up reel 37 rotate in the T direction, and the shutter curtain 1 opens and moves upward. When the take-up reel 37 rotates in the T direction by the accumulated pressure accumulated in the return spring 39, the lock wire 36 is taken up by the take-up reel 37.

  Therefore, in the present embodiment, the take-up reel 37 and the return spring 39 constitute a take-up device 40 for taking up the lock wire 36 so as to be unwound.

  In this embodiment, the return spring 39 by the mainspring spring is housed in a space portion 37A formed inside the take-up reel 37, so that the case 33 has a small size in the thickness direction of the shutter curtain 1 with respect to the case 33. As can be seen from FIG. 4, the thickness in the thickness direction of the shutter curtain 1 with respect to the take-up reel 37 can be made sufficiently large, whereby the take-up length of the lock wire 36 by the take-up reel 37 is sufficient. Therefore, the shutter curtain 1 can be adapted to a shutter device having a long opening / closing movement length.

  As shown in FIG. 5, the case 33 accommodates an engaging member 50 that is rotatable in the vertical direction about a shaft 56 provided in the case 33. The engagement member 50 according to the present embodiment is coupled to the first component member 51 having an engagement portion 53 that can be engaged with the tooth portion 35 </ b> A of the rotation member 35, and the first component member 51. The second constituent member 52 has a length in the width direction of the shutter curtain 1. Thus, by making the engaging member 50 a combination of the first constituent member 51 and the second constituent member 52 that are separate parts, the engaging portion 53 that engages with the tooth portion 35A of the rotating member 35 is obtained. The formed first component member 51 can be hardened by a quenching process or the like, so that the teeth of the rotating member 35 can be placed on the engaging part 53 without the entire engaging member 50 being quenched. Similar to 35A, a large strength can be imparted.

  In the present embodiment, as the engaging portion 53 of the engaging member 50, as shown in FIG. 5, the first engaging portion separated in the rotation direction of the engaging member 50 around the shaft 56. 53A and a second engagement portion 53B are provided, and the first engagement portion 53A and the second engagement portion 53B are on an arc or a substantially arc on the center of rotation of the engagement member 50. It has been formed.

  Further, as shown in FIG. 4, the swinging member disposed so as to be swingable up and down around the fulcrum shaft 80 inside the fixed portion 70 </ b> A (curtain main portion 71 </ b> A) of the seat plate 1 </ b> B described above. A pressing member 54 is attached to 81.

  As can be seen from FIG. 4, the engaging member 50 is provided with a torsion coil spring 57. The coil portion 57C of the torsion coil spring 57 is wound around a shaft 56 that is the central axis of rotation of the engagement member 50, and one end portion 57A of the torsion coil spring 57 is engaged with the engagement member. 50, and the other end 57B is locked to the lower surface portion 33B of the case 33 which has a small bent shape. For this reason, the engaging member 50 is constantly urged to rotate in the M direction about the shaft 56 by the spring force of the torsion coil spring 57 in FIG. As shown, a part of the engaging member 50 is applied to the pressing member 54 provided on the shutter curtain 1, specifically, the fulcrum shaft 80 provided on the curtain main portion 71 </ b> A of the shutter curtain 1. It abuts on a pressing member 54 disposed on a swinging member 81 that can swing up and down at the center.

  For this reason, as will be described later, the shutter curtain 1 and the engagement member 50 are moved in the direction M in FIG. 5 when the shutter curtain 1 that is being closed is in contact with the obstacle 34. Thus, a shutter curtain side contact portion 58 and an engagement member side contact portion 59 that are in contact with each other to rotate in the N direction opposite to the direction are provided. The shutter curtain side contact portion 58 is formed by the pressing member 54, and the engagement member side contact portion 59 is in contact with the second component member 52 of the engagement member 50 in the first engagement member side contact portion 59A. There are two second engagement member side contact portions 59B. The first engagement member side contact portion 59A and the second engagement member side contact portion 59B are separated from each other in the width direction of the shutter curtain 1.

  Further, as shown in FIG. 5, the engagement member 50 is provided with the first engagement member side contact portion 59A and the second engagement member side contact portion 59B. Of these, the portion below the shaft 56, specifically, the second constituent member 52 that forms the engaging member 50 together with the first constituent member 51 overlaps with the first constituent member 51. It can implement | achieve by making the part except an existing part into an L shape or a substantially L shape.

  Further, when the shutter curtain 1 in the closed movement comes into contact with the obstacle 34, the engaging member 50 rotates about the shaft 56 in the N direction in FIG. Thus, a repulsive force for rotating and biasing the engaging member 50 in the M direction is accumulated, and the torsion coil spring 57 accumulates such a repulsive force. It is the elastic member provided in.

  Further, one end 57A of the torsion coil spring 57 is locked to the engaging member 50, and the other end 57B is immovably disposed on the shutter curtain 1 with respect to the engaging member 50. The torsion coil spring 57 is also an elastic member interposed between the engagement member 50 and the case 33 because the case 33 is locked to the case 33 serving as an opening / closing body immovable member.

  As shown in FIG. 6, the seat plate 1 </ b> B of the shutter curtain 1 during the closing movement comes into contact with the obstacle 34 shown in FIG. 1. As shown in FIG. 6, the fixing portion 70 </ b> A ( When the movable portion 70B (curtain sub-portion 71B) rises relative to the curtain main portion 71A), the swing member 81 swings upward about the fulcrum shaft 80. The member 50 rotates in the N direction about the shaft 56 in FIG. As a result, the engaging portion 53 of the engaging member 50 is engaged with the tooth portion 35A of the rotating member 35 as shown in FIG. 8 through the state of FIG. And the take-up reel 37 coupled and integrated with the rotating member 35 cannot rotate in the rotating direction (S direction in FIG. 5) when the shutter curtain 1 is moving in the closing direction. The rotating member 35 and the take-up reel 37 are locked by the engaging member 50 and cannot be rotated.

  For this reason, at this time, the lock wire 36 partially wound on the take-up reel 37 and the shutter curtain 1 on which the take-up reel 37 is disposed are mechanically coupled. Therefore, in the present embodiment, the mechanical coupling device 55 for mechanically coupling the locking wire 36 and the shutter curtain 1 is configured by the rotating member 35, the engaging member 50, and the like.

  Next, the relay device 38 shown in FIG. 10 will be described. As described above, the relay device 38 is provided with the first rotating member 42 to which the upper end of the locking wire 36 is connected, the second rotating member 43, and the rotary damper 44 that is a delay device. It has become a thing. The first rotating member 42 is rotatable about a shaft 60 provided on the machine frame 38A of the relay device 38, and a coil portion of a torsion coil spring 61 is wound around the shaft 60. One end 61A of the torsion coil spring 61 is engaged with a pin 45 fixed to the machine frame 38A, and the other end 61B of the torsion coil spring 61 is engaged with a pin 46 fixed to the first rotating member 42. For this reason, the first rotation member 42 is always urged by the torsion coil spring 61 in the B direction out of the B direction and the C direction around the shaft 60, and the rotation limit in the B direction is the machine frame 38A. It is prescribed | regulated by the stop member 38B provided in this. The second rotating member 43 is rotatable about a shaft 62 provided on the machine casing 38A. A coil portion of a torsion coil spring 63 is wound around the shaft 62, and a torsion coil is provided. One end 63A of the spring 63 is locked to a pin 47 fixed to the machine frame 38A, and the other end 63B of the torsion coil spring 63 is fixed to a gear member 48 coupled and integrated with the second rotating member 43. Locked to the pin 49. For this reason, the second rotating member 43 is always urged by the torsion coil spring 63 in the D direction out of the D direction and the E direction around the shaft 62.

  A roller 65 that is rotatable about a shaft 64 is attached to the first rotating member 42, and this roller 65 that is a rotating member provided on the first rotating member 42 is the first rotating member 42. The linear part 43A and the circular arc part 43B which are continuously formed in the 2 rotation member 43 can contact. Of these linear portions 43A and arc portions 43B, the linear portion 43A is formed at a location closer to the shaft 62 serving as the rotation center axis of the second rotation member 43 than the arc portion 43B. In FIG. 10 where the rotation member 42 has reached the limit of rotation in the B direction defined by the stop member 38B, the roller 65 is in contact with the linear portion 43A.

  The gear member 48 described above has a large number of gear teeth centered on the shaft 62, and the rotary damper 44 includes a pinion gear 66 that meshes with the gear teeth of the gear member 48. A plurality of blades disposed inside the damper 44 are attached to the rotation center shaft 66A of the pinion gear 66 via a one-way clutch, and the second rotation member 43 rotates about the shaft 62 in the D direction. Thus, when the pinion gear 66 and the center shaft 66A rotate in the P direction between the P direction and the Q direction via the gear member 48, the respective blades are filled into the damper 44 via the one-way clutch. Rotate in a viscous fluid. For this reason, the second rotating member 43 rotates in the D direction at a low speed by the resistance force of the viscous fluid. On the other hand, when the second rotating member 43 rotates in the E direction opposite to the D direction and the pinion gear 66 and the central shaft 66A rotate in the Q direction, the rotation in this direction is the cutting action of the one-way clutch. Is not transmitted to each blade. For this reason, the 2nd rotation member 43 can be rotated to E direction at high speed.

  Further, as shown in FIG. 10, an electrical switch 67 is attached to the machine casing 38 </ b> A of the relay device 38. The first rotating member 42 is provided with a dog member 68 for operating the actuator 67A of the electric switch 67.

  As shown in FIGS. 1 and 2, an automatic closing device 32 is placed and fixed on the upper part of the switch 13. FIG. 11 is a front view showing the internal structure of the automatic closing device 32, and FIG. 12 is a plan view showing the internal structure of the automatic closing device 32. The automatic closing device 32 automatically closes and moves the shutter curtain 1 stopped at the fully opened position or the halfway position in the opening and closing direction by mechanically controlling the opening and closing machine 13 in the event of a disaster such as a fire. The doorway 2 shown in FIG. 1 is closed by a shutter curtain 1 that is fully closed and has smoke resistance and / or fire resistance. The automatic closing device 32 is attached to the opening / closing machine 13 by a bracket part 110A of FIG. 11 provided in the machine casing 110 of the automatic closing device 32. Further, as shown in FIG. 12, each of the first control wire 111, the second control wire 112, and the third control wire 113 for controlling the automatic closing device 32 up to the automatic closing device 32 is provided. The end of is extended. These control wires 111 to 113 are flexible string-like members, and are also elongated members, like the aforementioned locking wires 36.

  Further, these control wires 111 to 113 are slidably inserted into the flexible outer cables 114 to 116. For this reason, the control wires 111 to 113 are protected by the outer cables 114 to 116.

  As shown in FIGS. 1, 2, and 10, the first control wire 111 extends to the relay device 38, and the end of the first control wire 111 is shown in FIG. 10. As described above, the relay device 38 is connected to the second rotating member 43.

  As shown in FIGS. 11 and 12, the machine casing 110 of the automatic closing device 32 is provided with two rising portions 110B and 110C facing each other, and formed on these rising portions 110B and 110C. A plate-like slide member 120 having a length straddling the two rising portions 110B and 110C is slidably inserted into the holes 110D and 110E. A coil spring 121 is wound around the outer periphery of the slide member 120. Due to the spring force of the spring 121 serving as an elastic biasing member, a forward force toward the rising portion 110B is always applied to the slide member 120. doing. The direction of the forward force is a direction in which the first portion 31A of the lever member 31 provided in the opening / closing machine 13 described in FIG.

  As shown in FIGS. 3 and 11, an operating member 122 is attached to a bent portion 120 </ b> A bent downward at the front end of the slide member 120, and the lever member 31 of FIG. An actuated member 123 is erected and coupled to the first portion 31A. When the slide member 120 moves forward by the spring force of the spring 121, the load in the direction A shown in FIG. 3 is applied to the first portion 31A of the lever member 31 by the operating member 122 coming into contact with the operated member 123. It comes to work. As shown in FIG. 11, in this embodiment, the actuating member 122 is a head 124A of a bolt 124. Therefore, the head 124A is rotated to turn the bolt 124 into a bent portion of the slide member 120. By moving forward and backward with respect to 120A, the distance between the actuating member 122 and the actuated member 123 can be adjusted to an appropriate dimension. After this adjustment, the lock nut 125 screwed into the bolt 124 is rotated, and the lock nut 125 is pressed against the bent portion 120A, whereby the position of the operating member 122 relative to the operated member 123 is adjusted. It can be fixed in an appropriate position.

  As shown in FIG. 12, a solenoid 126 is attached to the machine casing 110 of the automatic closing device 32, and the plunger 127 of the solenoid 126 has a spring force of a coil spring 128 that causes the plunger 127 to move to the solenoid 126. It always works in the direction of projecting from. A distal end member 140 is attached to the distal end of the plunger 127 with a fastening tool 127A such as a screw. The L-shaped bent lever member 129 is rotatable about the central axis 129A. One end of the is in contact. As can be seen from FIG. 11, the tip member 140 having an inverted L shape is in contact with the raising / lowering member 141 on the surface opposite to the surface with which the one end of the bending lever member 129 is in contact. The raising / lowering member 141 is pivotally attached to the rising portion of the bracket 142 shown in FIG. 12 by a central shaft 142A (see also FIG. 11) using a screw. The member 141 can be tilted up and down around the lower part through which the central shaft 142A is inserted. And as FIG. 12 shows, the roller 130 is rotatably provided in the other edge part of the bending lever member 129 used as a trigger lever member.

  A concave portion 120 </ b> B is formed in the portion of the slide member 120 that faces the roller 130. A portion of the recess 120B on the backward side of the slide member 120 is an inclined surface 120C. Further, the automatic closing device 32 includes a spring 131 for applying a turning force in the K direction about the central axis 129A to the bending lever member 129, and a tilting member 141 on the solenoid 126 side centering on the central axis 142A. There is provided a spring 132 for returning the raising / lowering member 141 to an upright state when it falls down. Due to the spring force of the spring 131, the normal roller 130 provided at the other end of the bending lever member 129 is fitted into the recess 120B of the first slide member 120 as shown in FIG. By this fitting, the advance of the slide member 120 by the coil spring 121 described above is stopped. Thus, when the forward movement is stopped by the roller 130 fitted in the recess 120B, the position of the front end of the slide member 120 is the last position among the three positions H, I, and J shown in FIG. Position.

  As shown in FIG. 12, the automatic closing device 32 is provided with an electric switch 135, and the electric switch 135 has an actuator 136 biased in a direction protruding from the electric switch 135 by a spring. Is provided. Further, a dog member 137 is attached to the slide member 120 at a position opposite to the concave portion 120 </ b> B, and the actuator 136 is in contact with the dog member 137.

  A connecting member 138 provided with a first connecting portion 138A and a second connecting portion 138B is coupled to the slide member 120. The other end of the first control wire 111 is connected to the second rotating member 43 of the relay device 38 shown in FIG. The end of the second control wire 112 is connected to the above-described raising member 141 shown in FIGS. 11 and 12, and the end of the third control wire 113 is connected to the first connecting portion 138A. Are coupled to the second coupling part 138B of the coupling member 138 coupled to the slide member 120.

  Further, the second control wire 112 inserted into the outer cable 115 extends to the operating device 30 shown in FIG. 1, and the end of the second control wire 112 protruding from the outer cable 115. A manual operation member such as a lever member arranged in the operation device 30 is connected to the operation device 30. Further, the third control wire 113 inserted into the outer cable 116 also extends to the operation device 30, and the end of the third control wire 113 protruding from the outer cable 116 is also connected to the operation device 30. A manual operation member such as a lever member is disposed.

  As can be understood from the above description, the relay device 38 shown in FIG. 10 includes the locking wire 36 which is the above-described bridging member and also a flexible string-like member, and the switch 13. Since it is arranged between the automatic closing device 32 provided with the slide member 120 for controlling automatically, the relay wire 38 relays between the locking wire 36 and the automatic closing device 32. The slide member 120 of the automatic closing device 32 is connected via the first control wire 111.

  The lock wire 36 spanned between the shutter curtain 1 on which the take-up reel 37 is disposed and the relay device 38 disposed on the lintel 16 that is the stationary member described above is used in this embodiment. The first string 111 is a first string-like member, and the first control wire 111 spanned between the relay device 38 and the slide member 120 of the automatic closing device 32 is the second string-like member in the present embodiment. It has become.

  Further, on the extension line of the lock wire 36, the relay device 38, the first control wire 111, and the slide member 120 of the automatic closing device 32 are combined to form the electric motor device 18 and the brake device 19. The opening / closing machine 13 is arranged. In the present embodiment, as will be understood from the following description, a downward tension force acts on the lock wire 36 and the lock wire 36 is pulled downward, thereby turning off the brake device 19 of the switch 13. For this reason, the slide member 120 of the automatic closing device 32 that has been moved forward is moved backward, whereby the brake device 19 is turned on.

  Next, an outline of the operation of the shutter device according to the present embodiment will be described.

  In the building where the shutter device according to the present embodiment is installed, when a disaster such as a fire occurs when the shutter curtain 1 is stopped at the fully open position or in the middle of the opening and closing movement direction, the sensor from the sensor that has detected this disaster The solenoid 126 of the automatic closing device 32 is energized and the solenoid 126 is excited by a control device (not shown) to which a signal is input (this control device may also serve as the control device 26 in FIG. 1). The plunger 127 of the solenoid 126 moves backward against the spring force of the coil spring 128. As a result, the bending lever member 129 rotates in the direction opposite to the K direction in FIG. 12 about the central axis 129A against the spring force of the spring 131. The state at this time is shown in FIG. When the bending lever member 129 rotates about the central axis 129A in the direction opposite to the K direction, the roller 130 of the bending lever member 129 escapes from the concave portion 120B of the sliding member 120, so that the sliding member 120 is an elastic biasing member. The forward movement is stopped by the spring force of the coil spring 121, and the forward movement is stopped when the front end of the connecting member 138 comes into contact with the above-described rising portion 110B of the machine casing 110 of the automatic closing device 32. The position of the front end of the slide member 120 at this time is the I position which is the foremost position among the three positions H, I and J shown in FIG. 12, as shown in FIG.

  Further, when the slide member 120 moves forward, the actuator 136 of the electric switch 135 is disengaged from the position of the dog member 137 attached to the slide member 120. Therefore, the electric switch 135 is caused by the actuator 136 protruding and moving by the biasing force of the spring. In response to the signal from, the control device stops energizing the solenoid 126.

  When the energization of the solenoid 126 is stopped, the plunger 127 protrudes from the solenoid 126 by the spring force of the spring 128, and the bending lever member 129 moves in the K direction in FIG. 12 about the central axis 129A by the spring force of the spring 131. Rotate. Since the slide member 120 at this time has advanced to the advance limit where the front end of the slide member 120 reaches the I position, the roller 130 of the bending lever member 129 slides as shown in FIG. It hits the aforementioned inclined surface 120C of the member 120. For this reason, the rotation of the bending lever member 129 about the central axis 129A in the K direction stops halfway, and the protruding movement of the plunger 127 stops when the plunger 127 abuts against the raising / lowering member 141. .

  When the slide member 120 of the automatic closing device 32 advances as described above, the operating member 122 provided at the front end of the slide member 120 is connected to the opening / closing machine 13 via the operated member 123 shown in FIG. In order to press the first portion 31A of the lever member 31 in the direction A in FIG. 3, as described above, the first portion 31A swings in the A direction using the second bent portion 31D of the lever member 31 as a fulcrum. As a result, the brake shaft 21 and the second brake member 22 of the brake device 19 of the opening / closing machine 13 slide in the A ′ direction, which is the same direction as the A direction. Turn off. For this reason, the shutter curtain 1 that has been stopped at the fully open position or in the middle of the opening / closing movement direction rotates the take-up shaft 11 by the weight of the seat plate 1B and the like below the take-up shaft 11. The above-described drive shaft 14 of the opening / closing machine 13 also rotates freely via the driving force transmission means 12 and the shutter curtain 1 is fully closed, so that the disaster prevention section by the shutter curtain 1 is opened. Will be formed.

  Further, when a person discovers that a disaster such as a fire has occurred, this person is arranged in the operating device 30 shown in FIG. 1 and is connected to the end of the second control wire 112 described above. The second control wire 112 is pulled by a manual operation member such as a lever member. As a result, the raising / lowering member 141 of FIGS. 11 and 12 to which the second control wire 112 is coupled is turned to the solenoid 126 side around the central shaft 142A, and therefore, the raising / lowering member 141 is moved to the raising / lowering member 141. The plunger 127 pushed through the tip member 140 moves backward, and the bending lever member 129 whose one end is in contact with the tip member 140 by the spring force of the spring 131 is centered on the central shaft 129A. Furthermore, it rotates in the direction opposite to the K direction in FIG.

  For this reason, even before the solenoid 126 is energized and excited, as in the case where the solenoid 126 is energized and excited, the roller 130 of the bending lever member 129 escapes from the recess 120B of the slide member 120, and the slide member 120. Is moved forward by the spring force of the coil spring 121, so that the brake device 19 that has been turned on can be turned off, whereby the shutter curtain 1 is moved to the fully closed position by its own weight. Can do.

  Thus, when the shutter curtain 1 reaches the fully closed position and a disaster such as a fire is resolved, the shutter curtain 1 is disposed on the operating device 30 and connected to the end of the third control wire 113 described above. The third control wire 113 is pulled by a manual operation member such as a lever member. Thus, since the third control wire 113 is connected to the slide member 120 of the automatic closing device 32, the slide member 120 is retracted against the spring force of the spring 121. For this reason, the slide member 120 returns from the position shown in FIG. 14 to the initial position where the front end becomes the H position in FIG. Further, when the slide member 120 returns to this initial position, the bending lever member 129 rotates about the central axis 129A in the K direction of FIG. As shown in FIG. 12, it fits into the recess 120B of the slide member 120, and the slide member 120 stops in a state where the front end of the slide member 120 reaches the H position. Thereby, the automatic closing device 32 returns to the initial state before the occurrence of a disaster such as a fire.

  When the slide member 120 returns to the initial position, the brake shaft 21 and the second brake member 22 of the brake device 19 of the opening / closing machine 13 move in the direction opposite to the A ′ direction by the spring 23 described above in FIG. The brake device 19 returns to ON. Thereafter, by operating the above-mentioned “open” button provided in the operating device 30, the shutter curtain 1 opens and moves to the fully open position as described above.

  The occurrence of a disaster such as a fire as described above is detected by the above-described sensor, or a person who discovers the occurrence of a disaster such as a fire pulls the second control wire 112, whereby the shutter curtain 1 forms a disaster prevention zone. In order to do so, the closing movement to the fully closed position is when the shutter device according to the present embodiment is the above-described shutter device for disaster prevention. On the other hand, as described above, when the opening / closing movement and stoppage of the shutter curtain 1 are performed by operating the “open”, “closed”, and “stop” buttons of the operation device 30, the present embodiment is used. This is when the shutter device is the aforementioned management shutter device.

  When the shutter device according to the present embodiment is a shutter device for disaster prevention and the shutter curtain 1 is closing and moving, in other words, the automatic closing device 32 is in the state shown in FIG. 14 and the shutter curtain 1 is closed. When the obstacle 34 shown in FIG. 1 exists on the lower side of the shutter curtain 1 in the closing movement direction when moving, the shutter curtain 1 is moved during the closing movement of the shutter curtain 1. In other words, the curtain sub-portion 71B arranged at the front end portion on the closing side is in contact with the obstacle 34 by the movable portion 70B of FIG. 4 forming the lower portion of the seat plate 1B of the shutter curtain 1. Thus, the descent of the movable part 70B stops.

  Even if the lowering of the movable portion 70B stops, the curtain main portion 71A configured by the curtain main body 1A and the fixed portion 70A of FIG. 4 of the seat plate 1B is lowered from the state of FIG. Due to the relative rise of the curtain sub-portion 71B (movable portion 70B) with respect to the curtain main portion 71A generated by this lowering, as shown in FIG. 6, the swing member 81 disposed inside the fixed portion 70A is moved. It swings upward about the fulcrum shaft 80. As a result, the engaging member 50 constituting the mechanical coupling device 55 described above is rotated in the N direction about the shaft 56 in FIG. 5 by the pressing member 54 provided on the swing member 81. After the state of FIG. 7, the state of FIG. 8 is reached, and the engaging portion 53 of the engaging member 50 engages with the tooth portion 35 </ b> A of the rotating member 35.

  Accordingly, the rotating member 35 and the take-up reel 37 that have been rotated in the S direction in FIG. 5 when the shutter curtain 1 is closed and moved can be rotated in this S direction because they are locked by the engaging member 50. Thus, the shutter curtain 1 and the locking wire 36 fed from the take-up reel 37 are coupled by the mechanical coupling device 55 having the rotating member 35 and the engaging member 50 as constituent elements. Therefore, a downward tension force due to the weight of the shutter curtain 1 excluding the movable portion 70B, that is, the weight of the curtain main portion 71A, acts on the lock wire 36.

  After the shutter curtain 1 that is closing and moving is in contact with the obstacle 34 as described above, downward tension due to the weight of the shutter curtain 1 excluding the movable portion 70B acts on the lock wire 36. When the obstacle 34 is dented and deformed, the lock wire 36 coupled to the shutter curtain 1 by the mechanical coupling device 55 is pulled downward by the amount of the dented deformation.

  Further, even if the obstacle 34 is a hard object that does not dent or deform hardly, when the engaging member 50 is rotated in the N direction of FIG. 5 by the pressing member 54 of the swinging member 81, it is shown in FIG. As shown, the first engaging portion 53A of the rotating member 35 is first of the first engaging portion 53A and the second engaging portion 53B that are provided as two engaging portions 53 on the engaging member 50. The second engaging portion 53B is engaged with the tooth portion 35A of the rotating member 35 after engaging with the tooth portion 35A. Of these engagements, at least the engagement of the first engagement portion 53A with the tooth portion 35A is performed on the engagement member 50 in the longitudinal direction of the engagement member 50 as shown in FIG. Of the first engagement member side contact portion 59A and the second engagement member side contact portion 59B that are provided as two engagement member side contact portions 59 apart from each other, the center of rotation of the engagement member 50 is provided. The first engagement member side contact portion 59A located far from the shaft 56 serving as the shaft is pushed up by the pressing member 54 serving as the shutter curtain side contact portion 58.

  The interval between the first engagement portion 53A and the second engagement portion 53B is the same or substantially the same as the interval (tooth pitch) between the teeth 35A of the rotating member 35, or between the teeth 35A. Since it is a dimension that is an integer multiple of 2 or substantially an integral multiple of the interval dimension, when the first engagement portion 53A is engaged with the tooth portion 35A, the second engagement portion 53B is also engaged with the tooth portion 35A. It comes to match.

  FIG. 9 shows a partially enlarged view of FIG. 8 when the first engaging portion 53A and the second engaging portion 53B are engaged with the tooth portion 35A of the rotating member 35 as described above. When the first engaging portion 53A is engaged with the tooth portion 35A of the rotating member 35 and the second engaging portion 53B is engaged with the tooth portion 35A of the rotating member 35, or the first engaging portion 53A is rotated. After engaging the tooth portion 35A of the member 35 and engaging the second engaging portion 53B with the tooth portion 35A of the rotating member 35, or the first engaging portion 53A engages with the tooth portion 35A of the rotating member 35. And before the second engaging portion 53B engages with the tooth portion 35A of the rotating member 35, the second engaging member side contact of the engaging member 50 as shown in FIG. The part 59B comes into contact with the pressing member 54 and is pushed up. That is, the pushing-up of the engagement member side contact portion 59 of the engagement member 50 by the pressing member 54 is performed by shifting from the first engagement member side contact portion 59A to the second engagement member side contact portion 59B. This push will be done in two stages.

  For this reason, in FIG. 9, the engagement member 50 is continuously rotated in the N direction, whereby the first engagement portion 53A of the engagement member 50 is engaged with the tooth portion 35A of the rotation member 35. Even if it is out of alignment, the second engaging portion 53B continues to engage with the tooth portion 35A of the rotating member 35, and the second engaging portion 53B rotates the rotating member 35 in the T direction. The rotation in the T direction is the rotation in the direction in which the take-up reel 37 winds the lock wire 36.

  The second engagement portion 53B rotates the rotation member 35 in the T direction in this manner because the distance from the shaft 56 that is the rotation center of the engagement member 50 is the first engagement member side contact. Since the second engagement member side contact portion 59B shorter than the contact portion 59A is pushed up by the pressing member 54, the rotation amount of the rotation member 35 by the second engagement portion 53B in the T direction increases. Therefore, when the obstacle 34 is indented and deformed even if the amount of relative rise of the curtain sub-portion 71B with respect to the curtain main portion 71A when the shutter curtain 1 being closed is in contact with the obstacle 34 is constant. In the same manner as described above, it is possible to secure a sufficient amount of downward pulling of the locking wire 36.

  For this reason, even when the obstacle 34 is hard so as not to be dented and deformed, the obstacle 34 has been dented and deformed in the lock wire 36 coupled to the shutter curtain 1 by the mechanical coupling device 55. Like sometimes, it can be pulled down sufficiently.

  In addition, although the number of the engaging parts provided in the engaging member 50 is two in this embodiment, this number may be three or more.

  Further, the engaging member 50 rotates in the N direction in FIG. 5 when the closing shutter curtain 1 abuts against the obstacle 34, so that the engaging portion 53 of the engaging member 50 has the teeth of the rotating member 35. When engaging the portion 35A, the tip of the engaging portion 53 and the tip of the tooth portion 35A come into contact with each other, so that the engagement portion 53 and the tooth portion 35A may be in a deadlock state. Therefore, for example, the above-described pressing member 54 is formed of an elastic member such as a leaf spring, or the contact portion of the engaging member 50 with the pressing member 54 is formed of an elastic member such as a leaf spring. By using the elastic portion, the pressing member 54 and the elastic portion are elastically deformed by the contact reaction force when the tip of the engaging portion 53 and the tip of the tooth portion 35A abut against each other. The tip of the portion 53 is the tooth 3 A displacement is once caused in a direction away from the tip of A, and after this displacement, the engagement member 53 of the engagement member 50 is slightly rotated during the displacement by the elastic repulsion force of the pressing member 54 and the elastic portion. You may make it engage with the tooth | gear part 35A of the rotation member 35. FIG.

  When the shutter curtain 1 that is closing and moving as described above contacts the obstacle 34 and the lock wire 36 is pulled downward, the first rotating member 42 of the relay device 38 shown in FIG. The second rotating member 43 is pushed by a roller 65 provided rotatably on the first rotating member 42 by rotating in the direction C in FIG. 10 against the spring 61 described above. As a result, it rotates in the direction E in FIG. The state after the first and second rotating members 42 and 43 are rotated by the downward pulling force of the locking wire 36 is shown in FIGS. When the second rotating member 43 is rotated in the direction E in FIG. 10, the gear member 48 coupled and integrated with the second rotating member 43 is connected to the pinion gear 66 of the rotary damper 44 as shown in FIG. The rotation of the pinion gear 66 in the Q direction does not generate a resistance force due to the viscous fluid in the damper 44 as described above. Therefore, the first rotating member 42 is rotated in the C direction at a high speed by the locking wire 36, and the second rotating member 43 is rotated in the E direction at a high speed. This second rotating member The first control wire 111 having one end connected to 43 is pulled at a high speed.

  As described above, when the shutter curtain 1 being closed and moving is in contact with the obstacle 34, the lock wire 36 is pulled downward, and when the first control wire 111 is pulled, the lock wire 36 and The connecting portion with the first rotating member 42, the contact portion between the roller 65 of the first rotating member 42 and the second rotating member 43, and the second rotating member 43 and the first control wire 111. A load acts on the connecting portion and the like. The mechanical action of this load will be described later.

  When the first control wire 111 is pulled as described above, the other end of the first control wire 111 is placed on the slide member 120 of the automatic closing device 32 in the state of FIG. 14 as described above. Since they are connected, the slide member 120 moves backward while resisting the coil spring 121. The slide member 120 when retracted in this way is shown in FIG. 15, and the position of the slide member 120 with which the roller 130 of the bending lever member 129 is in contact with the slide member 120 at this time is more than that in FIG. Although the slide member 120 is moving in the forward direction of the slide member 120, the roller 130 is still in contact with the above-described inclined surface 120 </ b> C of the slide member 120. The reason why the roller 130 in the slide member 120 abuts on the inclined surface 120 </ b> C and the roller 130 does not fit into the recess 120 </ b> B of the slide member 120 will be described later.

  When the slide member 120 is retracted as described above, the position of the front end of the slide member 120 at this time shifts from the I position to the J position. Therefore, the lever member of FIGS. 3 and 11 is operated by the operating member 122 of the slide member 120. The load in which the first portion 31A of 31 is pressed in the direction A in FIG. 3 is released. For this reason, the brake device 19 of the switch 13 is mechanically switched from off to on. When the brake device 19 is turned on, the drive shaft 14 of the opening / closing machine 13 cannot be rotated, so that the winding shaft 11 to which the upper end of the shutter curtain 1 is coupled cannot be rotated.

  Therefore, the shutter curtain 1 that is in contact with the obstacle 34 closes and stops moving at the contact position. This stop is performed by the mechanical coupling device 55 described above, the relay device 38 that is also mechanical, the slide member 120 that is a member of the automatic closing device 32 that slides mechanically, and mechanically turned on. It is performed by the mechanical structure comprised by the brake device 19 etc. of the opening / closing machine 13 which becomes. For this reason, after the shutter curtain 1 is closed and started moving, the building in which the shutter device according to the present embodiment is installed is blacked out due to the occurrence of a disaster such as a fire or other reasons. In addition, the shutter curtain 1 in contact with the obstacle 34 during the closing movement can be stopped.

  As described above, when the shutter curtain 1 moving in a closed state abuts against the obstacle 34 and the brake device 19 of the switch 13 is turned on, the obstacle sub-part 71B of the shutter curtain 1 is removed when the obstacle 34 is removed. Is lowered, the coupling between the shutter curtain 1 and the locking wire 36 by the mechanical coupling device 55 is released. As a result, the downward tension force acting on the locking wire 36 disappears. For this reason, the first rotating member 42 of the relay device 38 on which the return force of the spring 61 in FIG. The second rotating member 43 that is rotated back in the B direction and that the return force of the spring 63 acts on is rotated back in the D direction of FIG. The slide member 120 of the automatic closing device 32 that has been pulled in the backward direction is moved from the position J shown in FIG. 15 to the position shown in FIG. 15 by the spring force of the coil spring 121 that is an elastic biasing member in FIGS. Move forward to the I position shown. For this reason, the brake device 19 of the opening / closing machine 13 is mechanically switched again from on to off, and the shutter curtain 1 resumes its closed movement.

  Further, when the second rotating member 43 of the relay device 38 rotates in the direction D in FIG. 10, the pinion gear 66 of the rotary damper 44 rotates in the P direction. Resistance is generated. For this reason, the position of the front end of the slide member 120 shifts from the J position shown in FIG. 15 to the I position shown in FIGS. 12 and 14, and the brake device 19 of the switch 13 is switched from ON to OFF by this shift. This is not done instantaneously due to the delay action of the damper 44. Therefore, when the shutter curtain 1 is closed and restarted by the removal of the obstacle 34, the movement of the obstacle 34 is started with a time delay from the removal of the obstacle 34. It can be carried out.

  Even when the shutter curtain 1 abuts against the obstacle 34 when the shutter curtain 1 is closed and moved as the shutter curtain 1 of the above-described management shutter device, in the relay device 38 of FIG. 12 and the second rotating member 43 is rotated in the E direction. For this reason, the first control wire 111 is pulled, but the automatic closing device 32 at this time is shown in FIG. In this state, since the roller 130 of the bending lever member 129 is fitted in the recess 120B of the slide member 120, the slide member 120 is only slightly retracted by the gap between the roller 130 and the recess 120B. Yes, and therefore no significant change occurs in the self-closing device 32.

  The relay device 38 according to the present embodiment is provided with the electric switch 67 that causes the actuator 67A to be separated from the dog member 68 when the first rotating member 42 rotates in the C direction. When the electric switch 67 is activated by the first rotating member 42 rotating in the C direction while the shutter curtain 1 is closing and moving as the shutter curtain of the aforementioned management shutter device, The switch 13 is electrically driven and controlled by the control device 26 in FIG. 1 to which a signal from the switch 67 is input. By this drive control, the shutter curtain 1 is reversed and raised by a certain amount after contacting the obstacle 34. And stop. The electrical switch 67 is configured such that the shutter device according to the present embodiment becomes the above-described shutter device for disaster prevention by inputting a signal from a sensor that detects a disaster such as a fire to the above-described control device, so that the shutter curtain Although it operates also when moving in a closed state, when a signal from the sensor is input to the control device 26, the signal from the electrical switch 67 may be invalidated.

  In the above, in the shutter device for a large span having a large width dimension of the shutter curtain 1, the shutter curtain 1 is heavy, so that the shutter curtain 1 is stopped when contacting the obstacle 34 during the closing movement. The opening / closing machine 13 including the brake device 19 is also increased in size. For this reason, it becomes a member made from an elastic part for elastically energizing the slide member 120 of the automatic closing device 32 which is slidable in the forward / backward direction to switch the brake device 19 on / off. The coil spring 121 having a large spring force is used.

  According to this, in order to switch the brake device 19 from OFF to ON when the closing shutter curtain 1 comes into contact with the obstacle 34, the spring 121, which is an elastic biasing force, resists the spring 121 having a large spring force. Thus, the slide member 120 must be moved in the backward direction, and as the slide member 120 moves in the backward direction, the spring 121 is compressed, so that the spring force gradually increases, and thus the spring force is increased. The slide member 120 must be moved in the backward direction against the spring 121 whose size changes.

  In addition, even if the shutter curtain 1 is heavy as described above, the lower part of the shutter curtain 1 after the contact of the obstacle 34 with the obstacle 34 and the contact of the obstacle 34 The above-mentioned lock in which the entire weight of the shutter curtain 1 is the first string-like member of the present embodiment due to the reason that the shutter curtain 1 is curved and deformed downward due to the weight of the shutter curtain and a part of the shutter curtain 1 is landed. In some cases, the tension force does not act on the wire 36 as it is. Therefore, even if the downward tension force acting on the lock wire 36 is small, the slide member 120 is spring-loaded to switch the brake device 19 from off to on. It must be moved in the backward direction against the spring 121 having a large force.

  The relay device 38 according to the present embodiment shown in FIGS. 10 and 16 to 18 is provided with means capable of solving the above problems. Next, this problem solving means will be described.

  10, FIG. 16 and FIG. 17 also show a dynamic diagram of the load acting on the relay device 38 when the shutter curtain 1 that is closing and moving as the above-mentioned shutter curtain for disaster prevention comes into contact with the obstacle 34. FIG. It is shown. 10, 16, and 17, a point U is a connecting portion between the second rotating member 43 and the first control wire 111 that is the second string-like member in the present embodiment. Is a contact portion between the roller 65 provided as a rotation member on the first rotation member 42 and the second rotation member 43, the point W is the rotation center of the roller 65, and the point X is This is the connecting portion between the locking wire 36 and the first rotating member 42, and the point Y is the center of rotation of the first rotating member 42. Further, the point Z is a rotation center portion of the second rotation member 43.

  When the automatic closing device 32 is in the state shown in FIG. 14 showing the state immediately before the shutter curtain 1 contacts the obstacle 34, the relay device 38 is in the state shown in FIG. If the forward movement of the slide member 120 is not stopped at the point U at this time by the connecting member 138 and the rising portion 110B of the machine frame 110, the load F11 based on the coil spring 121 or the like acts. F11 is a load in the forward direction of the slide member 120 by the coil spring 121 and a load that acts on the slide member 120 in a direction opposite to the load, and the brake device for the switch 13 shown in FIG. It is a total value with the load by the spring force of 19 springs 23.

  In FIG. 10, the load F11 acts on the point U, so that the load based on the second turning member 43 about to turn in the D direction about the shaft 62 acts on the point V. Among them, the load passing through the point W is indicated by F12, and among the loads acting on the point V, the load component excluding the load F12 is consumed as a load for rotating the roller 65 around the point W. The load component does not contribute to rotating the first rotating member 42 in the B direction around the point Y. Of the load F12, the load component F12A perpendicular to the line segment connecting the point Y and the point W becomes a load that causes the first rotation member 42 to rotate in the B direction around the point Y. .

  On the other hand, when the shutter curtain 1 comes into contact with the obstacle 34, a load F13 is applied to the point X by a pulling force due to a downward tension acting on the locking wire 36. A load component F13A perpendicular to the line segment connecting the points X becomes a load for rotating the first rotating member 42 in the C direction around the point Y.

  For this reason, the first rotating member 42 is rotated in the B direction around the point Y in consideration of the interval dimension between the point Y and the point X with respect to the interval dimension between the point Y and the point W. If the load component F13A to rotate the first rotating member 42 in the C direction around the point Y is larger than the load component F12A to be adjusted, the first rotating member 42 rotates in the C direction. By moving, the second rotating member 43 rotates in the E direction, whereby the first control wire 111 is pulled, so that the slide member 120 starts retreating against the coil spring 121. .

  The state of the relay device 38 thereafter is shown in FIGS. 16 and 17, the load F11 in FIG. 10 changes to the load F21 in FIG. 16 and to F31 in FIG. 17 because the coil spring 121 is compressed. Also, the load F12 and the load component F12A in FIG. 10 change to the load F22 and the load component F22A in FIG. 16, respectively, and the load F32 and the load component F32A in FIG. Further, the load F13 and the load component F13A in FIG. 10 change to the load F23 and the load component F23A in FIG. 16, respectively, and the load F33 and the load component F33A in FIG.

  FIG. 16 shows a state where the slide member 120 is slightly retracted from the position of FIG. 14 due to the pulling force of the first control wire 111 from the state of FIG. It is compressed a little more than in the case of FIG. Therefore, the load acting on the point U based on the spring force of the spring 121 is a load F21 in FIG. 16 which is larger than the load F11 in FIG. The load acting on the point W based on the load F21 is the load F22, and the load component that attempts to rotate the first rotating member 42 in the B direction around the point Y is the load F22. F22A.

  FIG. 17 in which the second rotating member 43 is rotated in the E direction from the state of FIG. 16 shows a state where the automatic closing device 32 is in the state of FIG. 15 and the brake device 19 is switched from OFF to ON. ing. In FIG. 17, the slide member 120 is further retracted from the position of FIG. 14 to reach the position of FIG. 15 by the pulling force of the first control wire 111 from the state of FIG. Since the spring 121 at this time is further compressed than in FIG. 14, the load acting on the point U based on the spring force of the spring 121 is the load F31 in FIG. 17 larger than the load F21 in FIG. It has become. A load acting on the point W based on the load F31 is a load F32. Among the loads F32, a load component that attempts to rotate the first rotating member 42 in the B direction around the point Y is as follows. F32A.

  When comparing FIG. 16 and FIG. 17, the angle formed by the load F22 and the load component F22A in FIG. 16 is α, and the angle formed by the load F32 and the load component F32A in FIG. Yes, this angle β is larger than the angle α. The load F32 in FIG. 17 rises more than the load F22 in FIG.

  Further, the distance dimension between the point Z and the point V in FIG. 17 is larger than the distance dimension between the point Z and the point V in FIG.

  For these reasons, the load component F32A that attempts to rotate the first rotating member 42 in the B direction around the point Y in FIG. 17 is the first rotating member 42 around the point Y in FIG. Becomes smaller than the load component F22A which is going to rotate in the B direction.

  Therefore, when the relay device 38 shifts from the state of FIG. 16 to the state of FIG. 17, the first rotating member 42 is rotated about the point Y in the direction C of FIG. Thus, the load component F33A of the load F33 in FIG. 17 required to rotate the second rotation member 43 in the E direction and thereby retract the slide member 120 against the spring 121 is the load F23 in FIG. The load component F23A may be smaller.

  For this reason, even if the load F31 in FIG. 17 becomes larger than the load F21 in FIG. 16, the slide member 120 can be retracted against the spring 121 by the load component F33A of the small load F33 in FIG. The slide member 120 can be retracted to the position of FIG. 15 while compressing the coil spring 121.

  Further, when comparing FIG. 10 with FIG. 16, the distance between the point Z and the point V in FIG. 16 is the same as or substantially the same as the distance between the point Z and the point V in FIG. Although they are the same and do not change so much, the angle α formed by the load F22 and the load component F22A in FIG. 16 is larger than the angle formed by the load F12 and the load component F12A in FIG. The load F22 in FIG. 16 rises more than the load F12 in FIG. For this reason, the load component F22A that attempts to rotate the first rotating member 42 in the B direction around the point Y in FIG. 16 moves the first rotating member 42 around the point Y in FIG. It becomes smaller than the load component F12A to be rotated in the direction.

  Therefore, even when the relay device 38 moves from FIG. 10 to FIG. 16, the first rotation member 42 is rotated in the direction C in FIG. The load component F23A of the load F23 shown in FIG. 16 required to rotate the two-turn member 43 in the E direction and thereby retract the slide member 120 against the spring 121 is the load of the load F13 shown in FIG. It may be smaller than the component F13A.

  Therefore, even if the load F21 in FIG. 16 becomes larger than the load F11 in FIG. 10 due to compression of the spring 121, the slide member 120 is resisted against the spring 121 by the load component F23A of the load F23 in FIG. The slide member 120 can be retracted, and the slide member 120 can be slightly retracted from the position shown in FIG. 14 while compressing the coil spring 121.

  As can be seen from the above description, the relay device 38 according to the present embodiment moves the slide member 120 in the backward direction, and the tension of the lock wire 36 that is a string-like member for causing this movement. As the slide member 120 moves in the backward direction, the transmission load changing device has a relationship in which the tension of the locking wire 36 for retracting the slide member 120 does not increase.

  In the present embodiment, the locking wire 36 is a first string-like member, the first control wire 111 is a second string-like member, and the relay device 38 has an end portion of the first string-like member. The connected first rotating member 42 is connected to the other end of the second string member whose one end is connected to the slide member 120, and the rotation of the first rotating member 42 is transmitted. The second rotating member 43 is included.

  And in this embodiment, the coil spring which the rotation transmission performed between the 1st rotation member 42 and the 2nd rotation member 43 acts on the 2nd rotation member 43 via a 2nd string-like member As the elastic urging force 121 increases, the tension of the first string-like member (lock wire 36) required to rotate the second rotating member 43 against this elastic urging force does not increase. It is a rotation transmission.

  Further, in the present embodiment, the torque generated by the elastic biasing force of the coil spring 121 of the second rotating member 43 in which the elastic biasing force of the coil spring 121 acts via the second string-like member and the first countering this torque. The relationship with the torque of the first rotating member 42 due to the tension of the string-like member is such that the torque of the first rotating member does not increase as the torque of the second rotating member increases.

  Further, in the present embodiment, these technical features are the load transmitted from the second rotating member 43 to the first rotating member 42, and of the loads, the first rotating member 42 is rotated in the B direction. As the angle formed by the component to be moved increases from α to β or the like, or as the second rotating member 43 rotates in the E direction for retracting the slide member 120 via the second string-like member. The contact point V between the second rotation member 43 and the first rotation member 42 moves away from the rotation center point Z of the second rotation member, and further, the second rotation member 43 is the second string member. The first rotation member 42 among the loads F12, F22, and F32 transmitted from the second rotation member 43 to the first rotation member 42 as the slide member 120 is rotated in the E direction through which the slide member 120 is moved backward. The load components that are intended to rotate the B in the B direction are F12A, F22A, F32 This is achieved by gradually decreasing to A.

  In other words, the relay device 38 of the present embodiment configured by the first rotating member 42, the second rotating member 43, and the like has the first rotation so that the dynamic change of the load as described above occurs. In this apparatus, the arrangement position of the member 42, the arrangement position of the second rotation member 43, the arrangement position of the roller 65 in the first rotation member 42, and the like are set.

  In the present embodiment, the second rotating member 43 and the first rotating member 42 are in contact with each other at the roller 65 that is a rotating member that is rotatably attached to the first rotating member 42. The transmission of the rotation performed between the first rotating member 42 and the second rotating member 43 can be smoothly performed by eliminating the friction or reducing the friction by the rotation of the roller 65.

  FIG. 18 shows the end of the rotation of the second rotating member 43. In this final stage, the aforementioned arc portion 43 </ b> B formed on the second rotating member 43 is set to have an arc shape centered on the rotation center point Y of the first rotating member 42.

  For this reason, the 1st rotation member 42 rotates by the tension force which acts on the 1st string-like member (locking wire 36) as a pulling force, and the 2nd rotation member when this rotation amount becomes large. At the end of the rotation of 43, the portion of the second rotation member 43 that contacts the roller 65 provided on the first rotation member 42 is an arc portion 43B. Therefore, as shown in FIG. 18, at the end of the rotation of the second rotation member 43, the first rotation member 42 is swung with respect to the second rotation member 43 in the direction C of FIG. It will rotate in the state. For this reason, even if the first pulling member 42 is further turned in the C direction even after the brake device 19 is turned on, the first string-like member has a large pulling amount downward. This excessive rotation is not transmitted to the second rotation member 43 due to the above-mentioned idling. Accordingly, the second rotating member 42 can be prevented from excessively moving the slide member 120 in the backward direction via the second string-like member (first control wire 111). 15 at the position shown in FIG. 15, that is, the roller 130 of the bending lever member 129 is in contact with the inclined surface 120C of the slide member 120 and the roller 130 is not fitted in the recess 120B of the slide member 120. Thus, when the obstacle 34 with which the shutter curtain 1 abuts is removed, the slide member 120 can be advanced by the coil spring 121 and the brake device 19 can be switched from on to off. .

  Further, the relay device 38 of the present embodiment delays the rotation of the second rotating member 43 in the D direction when the slide member 120 moves forward with the elastic biasing force of the coil spring 121 that is an elastic biasing member. Since the rotary damper 44 serving as a delay device is provided, the obstacle 34 in contact with the shutter curtain is removed, whereby the tension of the first string member disappears and the slide member 120 is removed. Is advanced by the elastic biasing force of the spring 121, the rotation of the second rotation member 43 for advancing the slide member 120 is delayed by the damper 44. For this reason, the switching of the brake device 19 from on to off and the restart of the closing movement of the shutter curtain 1 performed by this switching can be performed with a time delay from the removal of the obstacle 34.

  The damper 44 may be for delaying the rotation of the first rotation member 42 in the B direction when the slide member 120 moves forward with the elastic biasing force of the coil spring 121.

  INDUSTRIAL APPLICABILITY The present invention can be used for various opening / closing devices such as a shutter device for management and disaster prevention in which the shutter curtain is an opening / closing body, an awning device, and a smoke protection banner device.

DESCRIPTION OF SYMBOLS 1 Shutter curtain which is an opening / closing body 13 Opening / closing machine 16 Crib which is a stationary member 18 Electric motor device 19 Brake device 32 Automatic closing device 34 Obstacle 35 Rotating member 35A Tooth part 36 Locking wire which is the first string-like member 37 Winding Take-up reel as a take-up member 38 Relay device 42 First turning member 43 Second turning member 43B Arc portion 44 Rotary damper as a delay device 50 Engaging member 53 Engaging portion 55 Mechanical coupling device 65 First Roller 111 which is a rotating member rotatably attached to the rotating member 111 First control wire 120 which is a second string member 120 Slide member 121 Coil spring which is an elastic biasing member

Claims (8)

A brake device for stopping and moving the openable / closable opening / closing body by turning on and off, and a slide member urged by an elastic urging member in a forward direction to switch the brake device from on to off; When the string-like member having a portion spanned between the opening / closing body and the immovable member which is immovable with respect to the opening / closing body, and the opening / closing body in the closing movement contact an obstacle A mechanical coupling device that mechanically couples the opening and closing body and the string-like member and applies a tension force based on the weight of the opening-closing body to the string-like member, and connects the string-like member and the slide member In order to do so, when the tension force is applied to the string-like member, the slide member is placed against the biasing force of the elastic biasing member. Switch from off to on In closing device being configured to include a relay device that moves in the backward direction,
The relay device has a relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the slide member as the slide member moves in the backward direction. It is a transmission load changing device that has a relationship that does not increase the tension for retreating the member ,
The string-shaped member is a first string-shaped member, and the relay device includes a first rotating member to which an end of the first string-shaped member is coupled, and one end to the slide member. A second rotating member to which the other end of the second string-like member is coupled and the rotation of the first rotating member is transmitted,
The rotation transmission performed between the first rotation member and the second rotation member acts on the second rotation member via the second string-like member, so that the elastic biasing member is elastically applied. An opening / closing device characterized in that, as the force increases, the tension transmission required to rotate the second rotating member against the elastic urging force does not increase . A brake device for stopping and moving the openable / closable opening / closing body by turning on and off, and a slide member urged by an elastic urging member in a forward direction to switch the brake device from on to off; When the string-like member having a portion spanned between the opening / closing body and the immovable member which is immovable with respect to the opening / closing body, and the opening / closing body in the closing movement contact an obstacle A mechanical coupling device that mechanically couples the opening and closing body and the string-like member and applies a tension force based on the weight of the opening-closing body to the string-like member, and connects the string-like member and the slide member In order to do so, when the tension force is applied to the string-like member, the slide member is placed against the biasing force of the elastic biasing member. Switch from off to on In closing device being configured to include a relay device that moves in the backward direction,
The relay device has a relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the slide member as the slide member moves in the backward direction. It is a transmission load changing device that has a relationship that does not increase the tension for retreating the member,
The string-shaped member is a first string-shaped member, and the relay device includes a first rotating member to which an end of the first string-shaped member is coupled, and one end to the slide member. A second rotating member to which the other end of the second string-like member is coupled and the rotation of the first rotating member is transmitted,
Torque due to the elastic urging force of the second rotating member in which the elastic urging force of the elastic urging member acts via the second string-like member, and the tension of the first string-like member that opposes this torque The relationship between the torque of the first rotating member due to the force is such that the torque of the first rotating member does not increase as the torque of the second rotating member increases. Switchgear. A brake device for stopping and moving the openable / closable opening / closing body by turning on and off, and a slide member urged by an elastic urging member in a forward direction to switch the brake device from on to off; When the string-like member having a portion spanned between the opening / closing body and the immovable member which is immovable with respect to the opening / closing body, and the opening / closing body in the closing movement contact an obstacle A mechanical coupling device that mechanically couples the opening and closing body and the string-like member and applies a tension force based on the weight of the opening-closing body to the string-like member, and connects the string-like member and the slide member In order to do so, when the tension force is applied to the string-like member, the slide member is placed against the biasing force of the elastic biasing member. Switch from off to on In closing device being configured to include a relay device that moves in the backward direction,
The relay device has a relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the slide member as the slide member moves in the backward direction. It is a transmission load changing device that has a relationship that does not increase the tension for retreating the member,
The string-shaped member is a first string-shaped member, and the relay device includes a first rotating member to which an end of the first string-shaped member is coupled, and one end to the slide member. A second rotating member to which the other end of the second string-like member is coupled and the rotation of the first rotating member is transmitted,
Of the load transmitted from the second rotating member to the first rotating member as the second rotating member rotates in the direction of retracting the slide member via the second string-like member. An opening / closing device characterized in that a component for rotating the first rotating member is reduced. A brake device for stopping and moving the openable / closable opening / closing body by turning on and off, and a slide member urged by an elastic urging member in a forward direction to switch the brake device from on to off; When the string-like member having a portion spanned between the opening / closing body and the immovable member which is immovable with respect to the opening / closing body, and the opening / closing body in the closing movement contact an obstacle A mechanical coupling device that mechanically couples the opening and closing body and the string-like member and applies a tension force based on the weight of the opening-closing body to the string-like member, and connects the string-like member and the slide member In order to do so, when the tension force is applied to the string-like member, the slide member is placed against the biasing force of the elastic biasing member. Switch from off to on In closing device being configured to include a relay device that moves in the backward direction,
The relay device has a relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the slide member as the slide member moves in the backward direction. It is a transmission load changing device that has a relationship that does not increase the tension for retreating the member,
The string-shaped member is a first string-shaped member, and the relay device includes a first rotating member to which an end of the first string-shaped member is coupled, and one end to the slide member. A second rotating member to which the other end of the second string-like member is coupled and the rotation of the first rotating member is transmitted,
A load transmitted from the second rotating member to the first rotating member as the second rotating member rotates in the direction of retracting the slide member via the second string-like member; An opening / closing apparatus characterized in that an angle formed by a component for rotating the first rotating member among the loads is increased. A brake device for stopping and moving the openable / closable opening / closing body by turning on and off, and a slide member urged by an elastic urging member in a forward direction to switch the brake device from on to off; When the string-like member having a portion spanned between the opening / closing body and the immovable member which is immovable with respect to the opening / closing body, and the opening / closing body in the closing movement contact an obstacle A mechanical coupling device that mechanically couples the opening and closing body and the string-like member and applies a tension force based on the weight of the opening-closing body to the string-like member, and connects the string-like member and the slide member In order to do so, when the tension force is applied to the string-like member, the slide member is placed against the biasing force of the elastic biasing member. Switch from off to on In closing device being configured to include a relay device that moves in the backward direction,
The relay device has a relationship between the movement of the slide member in the backward direction and the tension of the string-like member for causing the movement of the slide member as the slide member moves in the backward direction. It is a transmission load changing device that has a relationship that does not increase the tension for retreating the member,
The string-shaped member is a first string-shaped member, and the relay device includes a first rotating member to which an end of the first string-shaped member is coupled, and one end to the slide member. A second rotating member to which the other end of the second string-like member is coupled and the rotation of the first rotating member is transmitted,
As the second rotating member rotates in the direction in which the slide member is retracted via the second string-like member, the contact point between the second rotating member and the first rotating member is the first. 2. An opening / closing device characterized in that it moves away from the center of rotation of the rotating member. 6. The opening / closing device according to claim 1 , wherein the second rotating member and the first rotating member are in contact with a rotating member that is rotatably attached to the first rotating member. A switchgear characterized by that. The opening / closing apparatus according to any one of claims 1 to 6 , wherein the second rotation member is centered on a rotation center portion of the first rotation member at a final stage of rotation of the second rotation member. An arc portion having an arc shape is provided, and the contact portion with the second rotation member provided on the first rotation member is at the end of the rotation of the second rotation member, An opening / closing device that contacts the arc portion. The opening / closing apparatus according to any one of claims 1 to 7 , wherein the relay device includes the second rotating member when the slide member moves in a forward direction by an elastic biasing force of the elastic biasing member, or the An opening / closing device comprising a delay device for delaying the rotation of the first rotation member.

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