JP2015180804A - Mechanical opening/closing body stop device of switchgear - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanical opening/closing body stop device of a switchgear for stopping closing movement when an opening/closing body in the closing movement abuts on an obstacle.SOLUTION: A mechanical opening/closing body stop device of a switchgear includes: brake means which can stop and move a shutter curtain being an opening/closing body by being turned on and off; a slide member which slides for on/off-switching the brake means; and mechanical lock means 68 which is arranged at the shutter curtain, mechanically brings a chain 35 being a string-like member into a lock state with respect to the shutter curtain at the abutment of a seat plate on the obstacle, and makes a tension force which turns on the brake means by making the slide member slide act on the chain 35 by the own weight of the shutter curtain. The means 68 has a ratchet member 66 which oscillates with a pivot shaft 67 as a center, and a ratchet wheel 65 having a claw part in which a claw part 66D of the ratchet member 66 bites. The claw part 66D of the ratchet member 66 is arranged at an end part of the ratchet member 66 in a longitudinal direction.

Description

  The present invention relates to a mechanical opening / closing body stopping device of an opening / closing device for mechanically stopping the closing movement when the opening / closing body being closed contacts an obstacle, for example, a shutter curtain and an opening / closing body. The present invention can be used for various shutter devices such as shutter devices, hinged door devices, sliding door devices, awning devices, smoke proof curtain devices, and the like.

  In the management shutter device that is an opening / closing device and is an opening / closing body in which the shutter curtain is opened / closed, the shutter curtain is opened / closed to open / close an opening such as an entrance / exit. 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 disaster prevention shutter device, and a combined management and disaster prevention shutter device, an obstacle exists 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.

  The shutter curtain of the shutter device disclosed in Patent Document 1 is a curtain main part that is an opening / closing body main part, and a curtain that is an opening / closing body sub-part movably provided with respect to the curtain main part. And a sub part. Further, the stopping device disclosed in Patent Document 1 is a mechanical stopping device for mechanically stopping the closing movement of the shutter curtain when the shutter curtain comes into contact with an obstacle during the closing movement. It has become.

  This mechanical stop device is disposed on the shutter curtain, which has a portion spanned from the stationary member that is stationary with respect to the shutter curtain to the shutter curtain, and the shutter curtain is opened and closed. The curtain sub-portion moves with respect to the main curtain portion by the guide member that guides the movement of the bridging member relative to the shutter curtain and the obstacle that comes into contact with the shutter curtain during the closing movement of the shutter curtain. And a mechanical locking means for stopping the closing movement of the shutter curtain by setting the bridging member in a locked state.

  This mechanical locking means in the mechanical stopping device disclosed in Patent Document 1 is configured such that the curtain sub-portion moves with respect to the curtain main portion by an obstacle that comes in contact with the shutter curtain during the closing movement. A frictional force caused by the friction member is applied to the bridging member moving with respect to the curtain, and the bridging member is mechanically locked with respect to the shutter curtain by this frictional force.

JP 2008-223459 A

  According to this prior art, the mechanical locking means is generated because the bridging member is locked with respect to the shutter curtain by applying the frictional force of the friction member to the bridging member. The magnitude of the mechanical locking force that can be generated depends on the frictional force between the friction member and the bridging member. For this reason, the magnitude of the mechanical locking force that can be generated to stop the closing movement of the shutter curtain is naturally limited.

  An object of the present invention is to provide a mechanical opening / closing body stopping device for an opening / closing device that can increase the magnitude of a mechanical locking force for stopping the closing movement of the opening / closing body.

  The mechanical opening / closing body stop device for an opening / closing apparatus according to the present invention is such that an opening / closing body configured to include an opening / closing body main portion and an opening / closing body sub-portion movably provided with respect to the opening / closing body main portion is closed and moved. A mechanical opening / closing body stopping device for an opening / closing device for mechanically stopping the closing movement when abutting against an obstacle in the middle of A bridging member having a portion spanned to the opening / closing body, and a guide disposed on the opening / closing body, and guiding the movement of the bridging member relative to the opening / closing body when the opening / closing body is opened / closed. The opening / closing body sub-portion moves with respect to the opening / closing body main part by the obstacle abutted in the middle of the closing movement of the opening / closing body, thereby moving the bridge member to the opening / closing body. By closing the opening / closing body, In the mechanical opening / closing body stopping device of the opening / closing device configured to stop the movement, the guide member moves by the movement of the bridging member with respect to the opening / closing body. The opening / closing body sub-portion is formed by a second movement member connected to the first movement member and the obstacle abutting during the closing movement of the opening / closing body. Includes a deterring member that deters movement of the second movement member by moving relative to the main part of the opening / closing body.

  In the mechanical opening / closing body stop device of the opening / closing device, the first movement in which the guide member that guides the movement of the bridging member relative to the opening / closing body moves by the movement of the bridging member relative to the opening / closing body when the opening / closing body moves open / close In addition, the mechanical lock means includes a second movement member connected to the first movement member, and an opening / closing body sub-portion formed by an obstacle abutting during the closing movement of the opening / closing body. And a restraining member that restrains the movement of the second motion member by moving with respect to the main part. Therefore, the mechanical lock means is composed of a plurality of members different from the bridging member. In addition, except that the first motion member and the second motion member are connected, the mechanical lock means is configured as a means independent of the bridging member.

  Then, the opening / closing body sub-portion moves relative to the opening / closing body main part by the obstacle that is in contact with the closing movement of the opening / closing body, so that the movement of the second movement member is suppressed by the suppression member. Since the movement of the first movement member connected to the two movement members is also suppressed, the bridging member guided by the first movement member is locked with respect to the opening / closing body. It is possible to stop the closing movement.

  As described above, the closing movement of the opening / closing body in the present invention is stopped by suppressing the movement of the second motion member by the suppression member, and the suppression member and the second motion member are separate from the bridging member. In the mechanical locking means according to the present invention, since the bridging member is not configured as a constituent member, the closing force of the opening / closing body is stopped and the frictional force by the friction member acts on the bridging member. It is possible to increase the magnitude of the mechanical locking force that can be generated in order to stop the closing movement of the opening / closing body, as compared with the case where it is performed.

  In the present invention, the motion of the first motion member may be a rotational motion, a rotational motion including a swing motion, a linear reciprocating motion, a combined motion in which a plurality of motions are combined, or the like. Also, the motion of the second motion member connected to the first motion member may be a rotational motion, a rotational motion including a swing motion, or a linear reciprocating motion, and a plurality of motions are combined. Complex exercises may be used.

  Furthermore, the connection between the first motion member and the second motion member may be a direct connection, for example, an indirect connection via a motion conversion means. Further, the suppression of the movement of the second motion member by the suppression member may be the engagement of the suppression member to the second motion member, or the contact of the suppression member to the second motion member, and the suppression to the second motion member. The press contact of a member may be used.

  Further, in the present invention, the above-described bridging member may be of any shape and structure, and this bridging member may be, for example, a telescopic telescopic rod-like member or a block-like member, and a string-like shape. A member etc. may be sufficient.

  When the bridge member is a string-like member, the string-like member may be a wire made of metal, a string made of synthetic resin, a rope, or a chain including a roller chain or a ball chain. Other elongated members may be used.

  As an example, when the string-like member is a roller chain, the first motion member can be a sprocket wheel that meshes with the roller chain, and the second motion member is directly connected to the sprocket wheel. The second motion member can be a ratchet wheel, and the restraining member can be a ratchet member that can be bitten by the ratchet wheel.

  In the present invention, all or a part of the bridging member may be accommodated, for example, inside the guide member that guides the opening / closing movement of the opening / closing body and / or inside the opening / closing body. According to this, the part of the bridging member housed inside the guide member and / or inside the opening / closing body can be protected from external force.

  Furthermore, in the present invention, by connecting one end of the bridging member having a portion spanned from the stationary member that is stationary with respect to the opening / closing body to the opening / closing body to the stationary member, When the bridging member guided by the first moving member is locked with respect to the opening / closing body by inhibiting the movement of the second moving member by the restraining member, the opening / closing body is caused by the tension force acting on the bridging member. The closing movement may be stopped. Also, one end of the bridging member is not connected to the immovable member, and this one end is connected directly to the driving device for opening and closing the opening / closing body or indirectly via an intermediate device or the like. Thus, when the bridging member guided by the first motion member is locked with respect to the opening / closing body by the movement of the second motion member being restrained by the restraining member, the tension force acting on the bridging member Thus, the brake means provided in the driving device may be turned on, and thereby the downward closing movement of the opening / closing body may be stopped.

  In these cases, when the bridging member is a string-like member such as a wire having a portion extending downward from the stationary member to the opening / closing body, and the closing direction of the opening / closing body is downward, the tension force is opened / closed. It can be generated by the weight of the body itself.

  Further, the bridging member such as a string-like member may consist of only a portion extending from the stationary member to the opening / closing body, or a portion extending from the stationary member to the opening / closing body, and the stationary member or the stationary member from the opening / closing body. Similarly, it may have a portion extending to another immovable member that is immovable with respect to the opening / closing body.

  The immovable member in these cases refers to, for example, a member that forms an outer frame of an opening that is opened and closed by an opening / closing body, a guide member that guides opening / closing movement of the opening / closing body, a structural housing of an opening / closing device, and an opening / closing It is a housing for a structure such as a building where the apparatus is installed.

  In addition, when the bridging member such as a string-like member is composed of only a portion extending from the stationary member to the opening / closing body, a portion extending from the stationary member to the opening / closing body, and the portion extending from the opening / closing body to the opposite side. In the case of having a portion extending to the stationary member that is the same member as the stationary member, in other words, in the case where the bridging member has a U-shape folded back by an opening / closing body, flexibility is obtained. At least one end of the bridging member such as a string-like member is taken up by a rotating member such as a reel or a take-up shaft so that it can be fed out, thereby allowing the bridging member to follow the opening / closing movement of the opening / closing body. Can be made.

  Moreover, the opening / closing body according to the present invention may have any structure as long as it has the above-described opening / closing body main part and opening / closing body sub-part. For example, when the closing direction of the opening / closing body is a downward direction, the opening / closing body includes an opening / closing body main body and an end member disposed below the opening / closing body main body. In addition, the end member is formed to include a fixed portion fixed to the opening / closing body main body and a movable portion disposed below the fixed portion and movable in the vertical direction with respect to the fixed portion. The opening / closing body main body and the fixed portion constitute the opening / closing body main part, and the movable part is the opening / closing body sub-part.

  According to this, when the opening / closing body is closing and moving, the opening / closing body abuts against the obstacle present in the closing direction, the movable part serving as the opening / closing body sub-part abuts the obstacle. Therefore, the movement of the opening / closing body sub-part with respect to the opening / closing body main part by the obstacle can be more reliably performed.

  In addition, the present invention can be applied to any opening / closing device. One example is a shutter device whose opening / closing body is a shutter curtain. The present invention can also be applied to hinged door devices and sliding door devices, and can also be applied to awning devices, smoke-proof banner devices, and the like.

  When the present invention is applied to a shutter device, the shutter device may be a shutter device for an arbitrary use. That is, the shutter device to which the present invention is applied may be a management shutter device in which the shutter curtain is opened and closed to open and close an opening such as an entrance, and the shutter curtain having a disaster prevention function such as smoke prevention fires. It may be a shutter device for disaster prevention for forming a disaster prevention zone in a structure such as a building by closing and moving when an abnormal situation such as the above occurs, and may also be a combined shutter device for management and disaster prevention. The disaster prevention shutter device includes a disaster prevention shutter device for lifting means for closing the vicinity of the lifting means such as an elevator with a fully closed shutter curtain.

  Further, in the shutter device to which the present invention is applied, the shutter curtain may be configured by an arbitrary member and structure. That is, all or the main part of the shutter curtain may be formed by a plurality of slats, may be formed by a sheet, may be formed by a plurality of pipes connected by a link member, or may be formed by a plurality of panels. It may be formed with a net, and may be formed by combining a plurality of members among these members.

  Further, the opening / closing movement direction of the shutter curtain may be the vertical direction, or may be the horizontal direction. When the opening / closing movement direction of the shutter curtain is the vertical direction, the closing direction of the shutter curtain may be the downward direction or the upward direction.

  Furthermore, at least one of the opening and closing movements of the shutter curtain may be performed by an automatic driving device such as an electric motor or may be performed manually.

  Further, when the shutter curtain opening / closing movement direction is the vertical direction and the closing movement is downward, the closing movement may be performed by the dead weight of the shutter curtain, or the dead weight of the shutter curtain. Alternatively, the driving force of the driving device such as an electric motor may be added.

  Further, the means for stopping the shutter curtain before closing and moving in the downward direction may be a brake means or a shutter curtain such as a seat plate provided at the end of the shutter curtain on the closing side. The latching means provided with the latching member latched to a structural member may be sufficient.

  For the above-mentioned brake means, for the shutter device that performs the opening and closing movement of the shutter curtain by winding and unwinding of the shutter curtain by the winding shaft, an opening / closing machine that is a driving device for rotating the winding shaft is connected to the electric motor. Braking means are included which are configured with the means.

  Further, the locking means is configured such that when the shutter curtain has reached the fully open position, the locking member is locked to a shutter curtain constituent member such as a seat plate, so that the shutter curtain is stopped at the fully open position. When the tension force described above acts on the transfer member, the tension member causes the locking member to be detached from the shutter curtain constituent member such as the seat plate, and thereby the shutter curtain is closed and moved downward by its own weight. Is included.

  Further, the shutter curtain can be opened and closed by winding and unwinding the shutter curtain using the take-up shaft as described above, or the shutter curtain can be opened and closed by moving the shutter curtain all over like an overhead door. It may be performed while maintaining the same shape as the overall shape when reaching the closed position (including a shape that is somewhat deformed but substantially the same shape), or opening the shutter curtain The movement may be performed while the shutter curtain is deformed into a curved shape or the like, or a plurality of structural members such as a panel constituting the shutter curtain are connected when the shutter curtain is closed and moved while the shutter curtain is opened ( When storing the shutter curtain), they are separated from each other, and these components are overlapped in the thickness direction. It may be adapted to fit.

  The shutter curtain opening and closing movement is performed by winding and unwinding the shutter curtain by forward and reverse rotation of the winding shaft, and the downward closing movement of the shutter curtain is the shutter curtain's own weight or the driving force of the driving device in addition to its own weight. For the shutter device used in the above, a return spring by a torsion coil spring or a mainspring spring that accumulates the return force during the closing movement of the shutter curtain is provided on the winding shaft, and the upward movement of the shutter curtain is performed by this. The return force accumulated in the return spring may be used as an auxiliary force.

  According to the present invention, it is possible to increase the mechanical locking force for stopping the closing movement of the opening / closing body.

FIG. 1 is a front view showing the entirety of a combined shutter device for management and disaster prevention that is a switchgear 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. FIG. 4 is a side view showing the processing apparatus shown in FIGS. 1 and 2, with the front and back sides reversed from FIG. 2. FIG. 5 is an enlarged front view of a guide rail side portion in which a roller chain serving as a bridging member is housed and arranged in the shutter curtain seat plate serving as an opening / closing body. 6 is a front sectional view showing the internal structure of the seat plate portion shown in FIG. 7 is a cross-sectional view taken along line S7-S7 in FIG. 8 is a cross-sectional view taken along line S8-S87 in FIG. FIG. 9 is a view similar to FIG. 6 showing a state in which the ratchet member, which is a deterring member, is engaged with the ratchet wheel, which is the second motion member, when the shutter curtain that is closing is in contact with an obstacle. 10 is a view similar to FIG. 8 when the state of FIG. 9 is reached. FIG. 11 is a front view showing the internal structure of the automatic closing device shown in FIG. 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. 8 showing the first alternative embodiment. FIG. 17 is a view similar to FIG. 8 showing a second alternative embodiment. FIG. 18 is a view similar to FIG. 8 showing the third alternative embodiment.

  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 shutter device for management in which the shutter curtain moves to open and close an opening such as an entrance and a shutter curtain having a disaster prevention function such as smoke prevention. It has a function as a shutter device for disaster prevention for forming a disaster prevention zone in a structure such as a building by closing and moving when an abnormal situation such as a fire occurs.

  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 when it is in 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. Left and right guide rails 6 in which both end portions in the left and right direction of the shutter curtain 1, in other words, both end portions in the width direction of the shutter curtain 1 are slidably inserted are attached to the left and right building housings 3. Guided by these guide rails 6, the shutter curtain 1 moves up and down.

  A shutter box 8 is disposed in a 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. 2, which is a cross-sectional view taken along line S <b> 2-S <b> 2 of 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. This switch 13 which is a drive device for the winding shaft 11 is also shown in FIG. 2, and the rotational force of the drive shaft 14 of the switch 13 is driven by a drive sprocket wheel 12A attached to the drive shaft 14 and a winding. The winding shaft 11 passes through a driving force transmission means 12 by a driven sprocket wheel 12B attached to the one end of the shaft 11 and an endless roller chain 12C spanned between the sprocket wheels 12A and 12B. Is transmitted to.

  In addition, the opening / closing machine 13 of this embodiment is attached to the bracket member 15 coupled to one of the left and right side surface portions 8A and 8B of the shutter box 8.

  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, a portion of the shutter curtain 1 below the winding shaft 11 is suspended from the slit 17 provided in the lintel 16 disposed on the ceiling member 5 to the lower side of the ceiling member 5. Both end portions in the width direction are slidably inserted into the left and right guide rails 6 as described above.

  FIG. 3 is a cross-sectional view showing the internal structure of the switch 13. As shown in FIG. 3, the opening / closing machine 13 has a DC or AC electric motor means 18 and a brake means 19 arranged in parallel in the axial direction. The drive shaft 14 described above is an electric motor means. The rotary shaft is coupled to the center of 18 rotating rotors 18A. A disc-shaped brake shoe 20 is coupled to the end of the drive shaft 14 on the brake means 19 side. The brake means 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 brake drum 22 facing the brake shoe 20 in the axial direction. The brake shaft 21 and the brake drum 22 in the normal state are pressed toward the electric motor means 18 by the spring 23, and therefore the brake means 19 is turned on by the pressure contact between the brake shoe 20 and the brake drum 22. Accordingly, the drive shaft 14 of the electric motor means 18 at this time is not rotated by the braking force of the brake means 19.

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

  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 stopped. An operating device 30 for performing the above is attached. 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 26 vertically.

  The curtain main body 1A is an opening / closing body main body in the present embodiment that occupies the area of most of the shutter curtain 1, 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 “close” button is operated when the shutter curtain 1 has reached a halfway position (half-open state), the brake means 19 receives a signal from the “close” button by a control device (not shown). Since the solenoid 24 is energized, the brake means 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 device that receives a signal from a sensor (not shown) that detects the fully closed position cuts off the energization of the solenoid 24 and the brake means 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 the semi-closed state), the solenoid 24 of the brake means 19 is energized by the control device that receives a signal from the “open” button, so that the brake means 19 is turned off. The coil 25 of the electric motor means 18 is energized by the control device. 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 control device that receives a signal from a sensor (not shown) that detects the fully open position cuts off the energization of the solenoid 24, and the brake means 19 is turned on by the spring 23. The energization of the coil 25 is cut off by the control device.

  When the “stop” button is operated while the shutter curtain 1 is closed and moved by its own weight, the energization to the solenoid 24 is cut off by the control device that receives a signal from the “stop” button. When the means 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 device that receives a signal from the “stop” button. Is turned on by the spring 23, and the control device cuts off the energization of the coil 25 of the electric motor means 18, whereby the shutter curtain 1 stops at that position.

  As can be seen from the above description, the guide rail 6 and the shutter box 8 as well as the lintel 16 and the floor 4 are stationary with respect to the shutter curtain 1 that opens and closes. 6, the shutter box 8, the lintel 16, the floor 4, etc. are immovable members for the shutter curtain 1.

  In addition, the winding shaft 11 that rotates forward and backward as described above 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 1 is moved upward. The opening movement may be performed using the return force accumulated in the return spring as an auxiliary force.

  Further, as shown in FIG. 3, a lever member 31 is disposed at the end of the brake shaft 21 opposite to the electric motor means 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 means 18, the first portion 31A swings in the A direction with the second bent portion 31D as a fulcrum, so that the brake shaft 21 and the brake drum 22 slide in the A ′ direction which is the same direction as the A direction. For this reason, the brake means 19 can be turned off without energizing the solenoid 24.

  The load in the A direction acting on the first portion 31 </ b> A in this way is performed by an automatic closing device 32 described later attached to the opening / closing machine 13.

  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 brake drum 22 slide in the A ′ direction. Therefore, the brake means 19 can be turned off at this time without energizing the solenoid 24.

  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 opening / closing machine 13 according to this embodiment can turn off the brake means 19 by manual operation. Note that the second portion 31B may be omitted leaving the second bent portion 31D.

  As shown in FIG. 1, the opening / closing machine 13 is not disposed at the center position B in the width direction of the shutter curtain 1, but is disposed at a position close to one of the left and right guide rails 6. ing. Inside this guide rail 6A, a roller chain 35, which is a bridging member in the present embodiment and is a string-like member, is accommodated. The roller chain 35 extends from the lintel 16 that is a stationary member as described above to the lower end of the guide rail 6A that is a stationary member as described above through the inside of the shutter curtain 1. For this reason, the roller chain 35 has a portion extending from the stationary member to the shutter curtain 1. The lower end of the roller chain 35 is coupled to the guide rail 6A or the floor 4 by a coupling member 36 such as a pin, and the upper end of the roller chain 35 is disposed in the lintel 16 for processing the upper end. 37.

  This processing device 37 which is an intermediate device arranged between the roller chain 35 and the automatic closing device 32 is also shown in FIGS. FIG. 4 is a view that is shown upside down with respect to FIG. As shown in FIG. 4, the processing device 37 is coupled to the machine frame 38 and a rotation member 39 that is rotatable about a central shaft 39 </ b> A coupled to the machine frame 38 of the device 37. And a lever member 40 that is swingable about the fulcrum shaft 40A. The upper end of the roller chain 35 is connected to one end of the lever member 40 via a coil spring 41 that is an elastic member, and the other end of the lever member 40 is connected to a rotating member 39. It is connected to the rotation member 39 via Since the pin 42 is inserted into a long hole 40B formed in the lever member 40, when the lever member 40 swings up and down around the fulcrum shaft 40A, the rotating member 39 is centered around the central shaft 39A. Rotate up and down.

  FIG. 5 is an enlarged front view of a portion on the guide rail 6 </ b> A side of the seat plate 1 </ b> B serving as the above-described end member of the shutter curtain 1. 6 is a front sectional view showing the internal structure of the seat plate 1B, FIG. 7 is a sectional view taken along line S7-S7 in FIG. 6, and FIG. 8 is a sectional view taken along line S8-S8 in FIG. As shown in FIG. 8, the shutter curtain 1 is formed of a large number of slats 26 arranged in a row in the vertical direction, and the curtain body 1A serving as the opening / closing body described above, and the curtain body 1A It has a seat plate 1B provided at the lower end and serving as an end member. The seat plate 1B is fixed to the lower portion of the curtain body 1A, and a movable portion 70B is disposed below the fixed portion 70A and is movable in the vertical direction with respect to the fixed portion 70A. It consists of.

  Further, as shown in FIG. 8, the shutter curtain 1 according to the present embodiment includes a curtain main portion 71A configured by a curtain main body 1A and a fixed portion 70A of the seat plate 1B, and a seat plate 1B. The curtain sub-part 71B is composed of a movable part 70B, and the curtain sub-part 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.

  The fixed portion 70A of the seat plate 1B is formed to include an outer member 75 and an inner member 76, both of which are box-shaped in cross section, and the outer member 75 is divided and arranged in the thickness direction of the shutter curtain 1. The divided members 75A and 75B are formed of a single piece, and these divided members 75A and 75B are coupled to the lower end portion of the curtain body 1A by a coupler 77 such as a bolt or a nut. The inner member 76 includes a front surface portion 76A and a rear surface portion 76B that are arranged at an interval in the thickness direction of the shutter curtain 1, and an upper surface portion 76C that connects the upper ends of the front surface portion 76A and the rear surface portion 76B. Consists of. The lower surfaces of the outer member 75 and the inner member 76 are openings 78.

  The curtain sub-portion 71 </ b> B that is the movable portion 70 </ b> B includes a hollow movable member 90 having an open upper surface, a lift member 91 that is housed in the movable member 90 so as to be movable up and down, and a lift member with respect to the movable member 90. 91 and an elastic member 92 that is always elastically pushed upward. In this embodiment, the elastic member 92 is formed by a leaf spring bent into a mountain shape, and the upper end of the center of the leaf spring 92 is fastened to the elevating member 91 by a fastening tool 93 such as a rivet. Both lower ends of the leaf springs 92 are slidably arranged on the upper surface of the bottom surface 90A of the movable member 90.

  The upper surface portions 91A and 91B of the elevating member 91 extend horizontally outward in the thickness direction of the shutter curtain 1, and these upper surface portions 91A and 91B are inserted into the inner member 76 through the opening 78. Further, the lower surface portions 75C and 75D of the outer member 75 extend horizontally outward in the thickness direction of the shutter curtain 1, and the upper surface portions 90B and 90C of the movable member 90 extend horizontally inward in the thickness direction of the shutter curtain 1. The upper surface portions 90B and 90C are opposed to the upper surfaces of the lower surface portions 75C and 75D of the outer member 75 in the vertical direction. For this reason, when the upper surface portions 90B and 90C of the movable member 90 ride on the lower surface portions 75C and 75D of the outer member 75, the aforementioned movable portion 70B reaches the lower limit position with respect to the fixed portion 70A. For this reason, the above-described curtain sub-portion 71B does not descend further with respect to the curtain main portion 71A.

  As shown in FIG. 8, 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 in the above-described fixing portion 70 </ b> A. . As shown in FIG. 10, when the movable part 70B moves up with respect to the fixed part 70A, that is, when the shutter curtain 1 is closed and moved, the movable member 90 contacts the obstacle 34 shown in FIG. When contacting, the upper surface portion 91A of the elevating member 91 connected to the movable member 90 via the elastic member 92 pushes up the protruding piece 81A of the swinging member 81, so that the swinging member 81 is centered on the fulcrum shaft 80. Rocks upward.

  The external member 75, the inner member 76, the movable member 90, the elevating / lowering member 91, and the swinging member 81 are formed of an extrusion molded product or a pultruded molded product made of, for example, an aluminum alloy. For this reason, the outer member 75, the inner member 76, the movable member 90, the elevating / lowering member 91, and the swinging member 81 have a length in the width direction of the shutter curtain 1. A fulcrum shaft 80 which is a swing center portion of the swing member 81 is formed integrally with the inner member 76, and this fulcrum shaft 80 also has a length in the width direction of the shutter curtain 1. Further, a plurality of the elastic members 92 by the leaf springs described above are arranged at intervals in the width direction of the shutter curtain 1.

  As shown in FIG. 8, the above-described two divided members 75A and 75B of the outer member 75 are overlapped with each other in the thickness direction of the shutter curtain 1 and extend upwards 75E and 75F. These extending portions 75E and 75F are coupled to the lowermost slat 26A among the slats 26 forming the curtain body 1A by the coupler 77 described above. Each slat 26 has a length in the width direction of the shutter curtain 1 such that both left and right ends are inserted into the left and right guide rails 6 shown in FIG. Further, the two divided members 75A and 75B including the extending portions 75E and 75F, the inner member 76, the movable member 90, the elevating member 91, and the swinging member 81 are spaced from each other between the inner widths of the left and right guide rails 6. The shutter curtain 1 has a shorter length in the width direction.

  As shown in FIG. 6, the end portions 76D and 81B on the guide rail 6A side of the inner member 76 and the swing member 81 are separated from the guide rail 6A by a predetermined distance, and this portion inside the outer member 75 A holding member 50 is disposed on the surface. Since the holding member 50 joined to the two divided members 75A and 75B of the outer member 75 by welding or fasteners has the same cross-sectional shape as the inner member 76, the holding member 50 is As shown in FIG. 7, the front surface portion 50A and the rear surface portion 50B are arranged at intervals in the thickness direction of the shutter curtain 1, and as shown in FIG. The upper surface portion 50C connects the upper ends of the surface portion 50B. Further, as shown in FIGS. 6 and 7, an extending member 51 extending toward the guide rail 6 </ b> A is fixed to the front surface portion 50 </ b> A and the rear surface portion 50 </ b> B of the holding member 50 with a fixing device 52 such as a rivet. Has been. The extending member 51 connects the front surface portion 51A and the rear surface portion 51B which are arranged at an interval in the thickness direction of the shutter curtain 1, and a part of the upper ends of the front surface portion 51A and the rear surface portion 51B. And the upper surface portion 51C.

  As shown in FIG. 5, the front part 51 </ b> A and the rear part 51 </ b> B of the extending member 51 can be fixed to the front part 50 </ b> A and the rear part 50 </ b> B of the holding member 50 with a fastening tool 52. The front surface portion 51A and the rear surface portion 51B of the extending member 51 are inserted and disposed in the two divided members 75A and 75B of the outer member 75 that are placed outside the front surface portion 50A and the rear surface portion 50B of the holding member 50. A cutout 53 is formed.

  As shown in FIG. 7, the distance in the thickness direction of the shutter curtain 1 with respect to the front surface portion 51A and the rear surface portion 51B of the extending member 51 is fixed to the front surface portion 50A and the rear surface portion 50B of the holding member 50. When the portion fixed at 52 is removed, the opening 54 provided in the guide rail 6A in order to insert the curtain body 1A of the shutter curtain 1 into the guide rail 6A in the thickness direction of the shutter curtain 1 It is smaller than the dimensions. For this reason, the portion on the guide rail 6A side of the extending member 51 is inserted into the guide rail 6A.

  As shown in FIG. 6, the first sprocket wheel 61 is rotatably disposed inside the extending member 51, and the holding member 50 has a slightly lower side than the first sprocket wheel 61, The second sprocket wheel 62 is rotatably held, and a third sprocket wheel 63 is rotatably disposed inside the extending member 51 slightly below the second sprocket wheel 62. The arrangement positions of the first and third sprocket wheels 61 and 63 in the extending member 51 are inside the guide rail 6A.

  As described above, the roller chain 35 whose upper end is connected to the processing device 37 shown in FIGS. 2 and 4 is inserted from the processing device 37 into the guide rail 6A. As shown in FIG. 6, it is hung on the lower part of the first sprocket wheel 61 and then hung on the second sprocket wheel 62. The roller chain 35 extends around the upper part of the third sprocket wheel 63 and then extends downward through the guide rail 6A. The lower end of the roller chain 35 is connected to the coupling member 36 shown in FIG. The position has been reached. For this reason, the roller chain 35 includes a first portion 35A from the processing device 37 to the first sprocket wheel 61, and a second portion from the first sprocket wheel 61 to the third sprocket wheel 63 via the second sprocket wheel 62. There is a portion 35B and a third portion 35C from the third sprocket wheel 63 to the coupling member 36.

  The shutter curtain 1 is guided by the left and right guide rails 6 to open and close up and down as the second portion 35B of the roller chain 35 moves relative to the shutter curtain 1 by the opening and closing movement of the shutter curtain 1. Is called. As described above, when the second portion 35B of the roller chain 35 moves with respect to the shutter curtain 1, the three sprocket wheels 61 to 63 rotate. Therefore, the shutter curtain 1 moves to open and close these sprocket wheels 61 to 63. In this case, the second chain portion 35B of the roller chain 35 is a guide member that guides the roller chain 35 so that the second portion 35B of the roller chain 35 can move with respect to the shutter curtain 1.

  As shown in FIG. 7, the first space portion 55 into which the first and third sprocket wheels 61 and 63 can be inserted, and the guide space 6A in which the above-described opening portion 54 serves as an inlet, A second space portion 56 is formed which is formed on the far side of the first space portion 55 and has a dimension in the thickness direction of the shutter curtain 1 smaller than that of the first space portion 55. As shown in FIG. 6, the first and third portions 35A and 35C of the roller chain 35 are disposed in the second space portion 56. Therefore, the first and third portions 35A and 35C are The guide rail 6A is inserted inside without contacting the inner wall surface of the guide rail 6A.

  Further, as shown in FIG. 6, a ratchet wheel 65 disposed coaxially with the second sprocket wheel 62 is rotatably held inside the holding member 50 described above, and a plurality of ratchet wheels 65 are arranged on the outer peripheral portion. As shown in FIG. 7, the ratchet wheel 65 in which the claw portions 65A are formed at equal intervals is coupled and integrated by a second sprocket wheel 62 and a shaft portion 62A. For this reason, the second sprocket wheel 62 and the ratchet wheel 65 are rotating members that rotate together.

  From the above, in the present embodiment, the second sprocket wheel 62 serves as a first motion member for guiding the movement of the roller chain 35 with respect to the shutter curtain 1 during the opening and closing movement by a rotational motion. In addition, the ratchet wheel 65 is connected to the first motion member and is a second motion member that rotates integrally with the first motion member.

  As shown in FIG. 6, the ratchet member 66 is swingably held in the holding member 50 at a position closer to the aforementioned swinging member 81 than the position at which the second sprocket wheel 62 is disposed. Has been. As shown in FIG. 7, the ratchet member 66 includes a front surface portion 66A and a rear surface portion 66B that are arranged at an interval in the thickness direction of the shutter curtain 1, and a front surface portion 66A and a rear surface portion 66B. And a bottom surface portion 66C connecting the lower ends. The front surface portion 66A and the rear surface portion 66B are pivotably connected to the front surface portion 50A and the rear surface portion 50B of the holding member 50 by a fulcrum shaft 67 such as a pin, so that the ratchet member 66 can swing up and down. Yes.

  As shown in FIG. 6, a claw portion 66D protruding toward the ratchet wheel 65 is formed on the bottom surface portion 66C of the ratchet member 66. The claw portion 66D has an inverted V shape. Yes. Further, the bottom surface portion 66C of the ratchet member 66 is formed with a protruding portion 66E that protrudes toward the swinging member 81 side. Due to the arrangement position of the fulcrum shaft 67 with respect to the position of the center of gravity of the ratchet member 66 as a whole, the ratchet member 66 in the normal state is inclined with the protruding portion 66E on the lower side, as shown in FIG. . A pressing member 94 is attached to the upper surface of the protruding piece 81 </ b> A of the swing member 81 described above, and the protruding portion 66 </ b> E of the ratchet member 66 in the normal state rides on the pressing member 94.

  When the ratchet member 66 swings about the fulcrum shaft 67 when the shutter curtain 1 is closed and moved, and the claw portion 66D is engaged with the claw portion 65A of the ratchet wheel 65, the ratchet wheel 65 and Since the rotation of the second sprocket wheel 62 is prevented, the roller chain 35 is locked with respect to the shutter curtain 1, and thereby the closing movement of the shutter curtain 1 can be stopped.

  For this reason, in the present embodiment, the ratchet wheel 65 and the ratchet member 66 constitute mechanical lock means 68 for mechanically locking the roller chain 35 with respect to the shutter curtain 1 that is being opened and closed. . The ratchet member 66 is a restraining member for restraining the rotational motion of the ratchet wheel 65 serving as the second motion member as described above.

  At the end of the movable member 90 described in FIG. 8 on the guide rail 6A side, as shown in FIG. 6, an extension member 95 extending to the guide rail 6A side is a fastening device 96 such as a rivet. The tip of the extension member 95, which is formed of a channel material that is fastened and opened upward, is inserted into the guide rail 6A. Such an extending member is also provided at the end opposite to the end of the movable member 90 shown in FIG. 6, and the tip of this extending member is the guide rail 6B shown in FIG. Is inserted inside. Thereby, even if the obstacle 34 shown in FIG. 1 exists in the guide rail 6A or the guide rail 6B, the movable member 90 can be connected to the above-described fixed portion of the shutter curtain 1 via the extension member. Ascending relative to the outer member 75 and the inner member 76 constituting 70A.

  A return spring 100 such as a torsion coil spring is disposed behind the rotating member 39 of the processing device 37 described with reference to FIG. The return force of the return spring 100 is such that the rotation member 39 is rotated in the C direction, that is, the rotation member 39 is rotated in the direction in which the roller chain 35 is pulled up via the lever member 40 described above. , Acting on the rotation member 39. The rotating member 39 is formed with an arc-shaped long hole 39B centering on the central axis 39A, and the stop member 101 attached to the machine frame 38 of the processing device 37 is inserted into the long hole 39B. By the stop member 101, the rotation amount of the rotation member 39 is regulated to a constant amount.

  Gear teeth 39C are formed on a part of the outer peripheral portion of the rotation member 39. Therefore, the rotation member 39 is a sector gear in which the gear teeth 39C are partially formed. The gear teeth 39C are provided on the side of the rotating member 39 in the thickness direction of the shutter curtain 1 (including those that can be said to be substantially in the thickness direction; the same applies hereinafter). In addition, two rotary dampers 102 are disposed in the processing device 37, and these dampers 102 include a pinion gear 103 that meshes with the gear teeth 39 </ b> C of the rotating member 39. A plurality of blades are attached to the rotation center shaft 104 of the pinion gear 103 via a one-way clutch, and the pinion gear 103 and the center shaft 104 rotate in the E direction by rotating the rotation member 39 in the C direction. First, each blade rotates in the viscous fluid filled in the damper 102 via the one-way clutch. For this reason, the rotating member 39 is rotated in the C direction at a low speed by the resistance force of the viscous fluid. On the other hand, when the rotation member 39 rotates in the D direction opposite to the C direction and the pinion gear 103 and the central shaft 104 rotate in the F direction, the rotation in the F direction is caused by the cutting action of the one-way clutch. Not transmitted to each blade. For this reason, the rotation member 39 can rotate at high speed in the D direction.

  The number of dampers 102 may be one. However, by using a plurality of dampers 102 as in the present embodiment, the above-described resistance force for rotating the rotating member 39 at a low speed in the C direction can be increased, whereby the C of the rotating member 39 can be increased. The speed in the direction can be reduced to the desired speed.

  In addition, the rotation member 39 is a sector gear partially formed with gear teeth 39C, so that the rotation member 39 is more than the case where the rotation member 39 is a gear formed with gear teeth all around. The overall vertical dimension of the can be reduced. Thereby, as shown in FIG. 2, the processing device 37 can be effectively arranged in a space where the vertical dimension between the lintel 16 and the shutter box 8 is small.

  Further, the rotating member 39 is a sector gear formed with gear teeth 39C in part, and the gear teeth 39C are provided on the rotating member 39 on the side in the thickness direction of the shutter curtain 1 as described above. Since the arrangement position of the rotation member 39 in the processing device 37 can be set to a high position, the shutter curtain 1 is moved to the fully open position without the seat plate 1B interfering with the lever member 40 described above. To be able to.

  FIG. 11 is a front view showing the internal structure of the automatic closing device 32 shown in FIGS. 1 to 3, 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 that has reached the fully opened position in the event of a disaster such as a fire to make it fully closed, and has a smoke-proof and / or fire-proof shutter. This is for closing the entrance 2 in FIG. 1 by the curtain 1. The automatic closing device 32 is attached to the above-described opening and closing machine 13 shown in FIGS. 1 to 3 by a bracket portion 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 string-like members having flexibility like the roller chain 35 described above, and are also elongated members.

  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 FIG. 4, the first control wire 111 extends to the processing device 37, and the end of the first control wire 111 opposite to the automatic closing device 32 is at the end of the processing device 37. The rotating member 39 is connected. As shown in FIG. 2, the first control wire 111 and the outer cable 114 into which the first control wire 111 is inserted are provided with the processing device 37 and the switch 13. The first control wire 111 and the outer cable 114 are wired in the ceiling space 7 of FIG. 2 and avoid the object 117 existing in the ceiling space 7, in other words, bypass the object 117. It is wired in a space where wiring is possible. Note that this space may exist in advance, and when the first control wire 111 and the outer cable 114 are wired, a part of the object 117 is cut out or a hole is provided in the object 117. Or formed.

  Thus, it is possible to wire the first control wire 111 and the outer cable 114 without interfering with the object 117 because the first control wire 111 and the outer cable 114 have flexibility. is there. The object 117 may be related to the building itself in which the shutter device of the present embodiment is installed, or may be related to a part of the shutter device of the present embodiment, for example, the shutter box 8 described above.

  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 spring 121 is wound around the outer periphery of the slide member 120. Due to the spring force of the spring 121, a forward force toward the rising portion 110B is constantly acting on the slide member 120. 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 the bent portion 120 </ b> A that is bent downward at the front end of the slide member 120, and the first portion of the lever member 31 is also provided. An actuated member 123 is erected and coupled to 31A. When the slide member 120 moves forward by the spring force of the spring 121, the load in the A direction acts on the first portion 31 </ b> A of the lever member 31 by the operating member 122 coming into contact with the operated member 123. ing. 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 a spring force of a spring 128 is applied to the plunger 127 of the solenoid 126 from the solenoid 126. It always works in the protruding direction. One end of an L-shaped bent lever member 129 that is rotatable about a central axis 129A is connected to the tip of the plunger 127 by a slide-type connecting portion 129B. A roller 130 is rotatably provided at the other end of the bent lever member 129.

  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. In the automatic closing device 32, the spring 131 for applying a turning force in the G direction about the central axis 129A to the bending lever member 129 and the direction in which the plunger 127 protrudes from the solenoid 126 together with the spring 128 described above. And a spring 132 for urging the bending lever member 129 in the G direction about the central axis 129A. Due to the spring force of these springs 128, 131, 132, the normal roller 130 is fitted in the recess 120 </ b> B as shown in FIG. Advancement of member 120 is stopped. Thus, the position of the front end of the slide member 120 when the forward movement is stopped by the roller 130 fitted in the recess 120B is the H position among the three positions H, I, and J shown in FIG.

  As shown in FIG. 12, the automatic closing device 32 is provided with a micro switch 135, and the micro switch 135 is provided with an actuating member 136 that is biased in a direction protruding from the micro switch 135 by a spring. It has been. In addition, a dog member 137 is attached to the slide member 120 at a portion opposite to the concave portion 120 </ b> B, and the operating member 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 connected to the slide member 120, and a connecting member 140 is connected to the tip of the plunger 127 of the solenoid 126, as described above. One end of the spring 132 is connected to the connecting member 140. The other end of the first control wire 111 is connected to the rotating member 39 of the processing device 37 shown in FIG. 4. The first connecting portion of the connecting member 138 of the slide member 120 is the first connecting portion. The end of the second control wire 112 is connected to the connecting member 140 connected to the plunger 127, and the end of the third control wire 113 is connected to the second of the connecting member 138 of the slide member 120. It is connected to the connecting part 138B.

  Further, the second control wire 112 inserted into the outer cable 115 extends to the operating device 30 described in FIG. 1, and the end of the second control wire 112 protruding from the outer cable 115 is at the end of the second control wire 112. A manual operation member such as a lever member disposed in the operation device 30 is connected. 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 disposed on the operation device 30. A manually operated member such as a lever member, or a rotating member that is rotated by a switch-operated electric motor disposed in the operating device 30, and is a winding member for winding the third control wire freely It is connected.

  In a 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 fully open, a control device (not shown) to which a signal from a sensor that detects the disaster is input. As a result, the solenoid 126 of the automatic closing device 32 is energized and the solenoid 126 is energized, so that the plunger 127 of the solenoid 126 moves backward against the spring force of the spring 128. As a result, the bending lever member 129 rotates against the spring force of the springs 131 and 132 about the central axis 129A in the direction opposite to the G direction in FIG. The state at this time is shown in FIG. When the bending lever member 129 rotates about the central axis 129 </ b> A in the direction opposite to the G direction, the roller 130 of the bending lever member 129 escapes from the recess 120 </ b> B of the sliding member 120. 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 operation member 136 of the micro switch 135 is disengaged from the position of the dog member 137 attached to the slide member 120, so that the operation member 136 protrudes and moves by the biasing force of the spring. In response to a signal from the switch 135, the above-described 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 is centered on the central axis 129A by the spring force of the springs 131 and 132 in the G direction of FIG. To turn. Since the slide member 120 at this time has advanced to the movement 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 protruding movement of the plunger 127 and the rotation of the bending lever member 129 about the central axis 129A in the G direction stop halfway.

  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 brake drum 22 of the brake means 19 of the opening / closing machine 13 slide in the A ′ direction, which is the same direction as the A direction, so that the brake means 19 that has been turned on until then is turned off. Become. For this reason, the shutter curtain 1 that is fully open is closed and moved downward while rotating the winding shaft 11 by the weight of the seat plate 1B and the like below the winding shaft 11. The above-described drive shaft 14 of the opening / closing machine 13 also freely rotates via the drive force transmission means 12 and the shutter curtain 1 is fully closed, whereby a disaster prevention zone is formed by the shutter curtain 1.

  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 plunger 127 of the solenoid 126 moves backward, so that even before the solenoid 126 is energized and excited, the bending lever member 129 is centered on the central axis 129A even when the solenoid 126 is energized and excited. 12, the roller 130 of the bending lever member 129 escapes from the recess 120B of the slide member 120, and the slide member 120 moves forward by the spring force of the spring 121.

  Therefore, according to the present embodiment, even in the manual operation using the second control wire 112, the brake means 19 of the switch 13 is turned off, and the shutter curtain 1 that has been fully opened is closed and moved to be fully closed. be able to.

  And in this embodiment, as FIG. 1 shows, the operating device 30 is a position close to the switch 13 and the automatic closing device 32 in the building housing 3 such as the left and right walls. Since it is arranged in the building housing 3A, the length of the second control wire 112 that is spanned between the automatic closing device 32 and the operating device 30 can be shortened. For this reason, as compared with the case where the operating device 30 is arranged on the other building housing 3B, the automatic closing device 32 is instantly supplied with the pulling force when the second control wire 112 is pulled by the manual operation member such as the lever member described above. Thus, the closing movement of the shutter curtain 1 can be started quickly.

  When the shutter curtain 1 reaches the fully closed position and a disaster such as a fire is resolved, the lever member or the like disposed on the operation device 30 and connected to the end of the third control wire 113 described above is used. The third control wire 113 is pulled by a manual operation member. Further, as described above, when the member connected to the end portion of the third control wire 113 is a winding member that is rotated by a switch operation type electric motor disposed in the operation device 30, The electric motor is driven by operating a switch with a button or the like disposed on the operation device 30, and the third control wire 113 is pulled by being wound around the winding member.

  When the third control wire 113 is pulled in this way, the third control wire 113 is connected to the slide member 120 of the automatic closing device 32, so that the slide member 120 resists the spring force of the spring 121. It will retreat. 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 in the direction G in FIG. 12 by the spring force of the springs 131 and 132 about the central axis 129A. As illustrated in FIG. 12, the roller 130 is fitted into the recess 120 </ b> B 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 brake drum 22 of the brake means 19 of the opening / closing machine 13 are moved in the direction opposite to the A ′ direction by the spring 23 described above with reference to FIG. 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.

  Note that the end of the third control wire 113 does not extend to the operating device 30, and this end is passed through the slit 17 of the lintel 16 from the ceiling space 7 shown in FIG. The third control wire 113 may be pulled at a position other than the position where the operating device 30 is disposed by providing a manual pulling operation member such as a ring member at the end.

  Further, as described above, the solenoid 126 of the automatic closing device 32 is energized and excited by the control device to which a signal from a sensor that detects a disaster such as a fire is input, or is connected to the end of the second control wire 112. The second control wire 112 is pulled by a manually operated member such as a lever member, and thereby the brake means 19 of the switch 13 is turned off, and the shutter curtain 1 is closed downward from the fully opened position by its own weight. When moving, in other words, when the automatic closing device 32 is in the state shown in FIG. 14 where the position of the front end of the slide member 120 is the I position, the shutter curtain is in the closing movement direction. When the obstacle 34 shown in FIG. 1 exists below the shutter 1, this shutter In other words, the curtain sub-portion 71B disposed at the front end of the curtain 1 closes the movable member 90 that forms the lower portion of the seat plate 1B of the shutter curtain 1 against the obstacle 34. The movable member 90 stops descending due to the contact.

  Even if the lowering of the movable part 70B is stopped, the curtain main part 71A composed of the curtain main body 1A and the fixed part 70A of the seat plate 1B is lowered. As the movable member 90 is raised relative to the portion 71A, the elevating member 91 connected to the movable member 90 via the elastic member 92 is also connected to the curtain main portion 71A as shown in FIG. Rise relatively. When this rise occurs, the swing member 81 swings upward about the fulcrum shaft 80, and by this swing, the ratchet member 66 on which the protrusion 66E is on the pressing member 94 shown in FIG. A swinging motion is performed with the claw 66D on the lower side about the fulcrum shaft 67. The state at this time is shown in FIG.

  When the ratchet member 66 swings around the fulcrum shaft 67 so that the claw portion 66D is on the lower side, the claw portion 66D of the ratchet member 66 is engaged with the claw portion 65A of the ratchet wheel 65. The rotation of the two-sprocket wheel 62 is stopped, and the roller chain 35 is mechanically locked with respect to the shutter curtain 1 that is closing and moving. In other words, the above-described mechanical lock means 68 constituted by the ratchet wheel 65 and the ratchet member 66 is operated.

  When the roller chain 35 is mechanically locked with respect to the shutter curtain 1, the entire shutter curtain 1 including the movable member 90 is further lowered by the amount of the dent deformation of the obstacle 34. A large tension force due to the weight of the shutter curtain 1 acts on the first portion 35A.

  In the case where the obstacle 34 is a hard object that does not dent deform or has a small amount of dent deformation, the movable member 90 that is in contact with the obstacle 34 does not descend further due to the hard nature of the obstacle 34 or It will hardly go down. However, in this embodiment, as described above, the movable member 90 and the elevating member 91 are connected by the elastic member 92 using a leaf spring, and the movable member 90 stops at a certain height position due to the obstacle 34. Even if this happens, the curtain main portion 71A in which the swing member 81 and the ratchet member 66 are disposed is lowered by the distance K shown in FIG. 10 with respect to the movable member 90 due to the elastic deformation of the elastic member 92. It is ready for use. For this reason, even if the movable member 90 does not descend or hardly descends due to the obstacle 34, the curtain main portion 71A is not affected by the weight of the shutter curtain 1 except for the weight of the movable member 90, the elevating member 91, and the elastic member 92. Thus, the elevating member 91 on which the upward elastic force of the elastic member 92 is acting rises relative to the curtain main portion 71A.

  For this reason, even when the obstacle 34 is a hard object that does not dent deform or has a small amount of dent deformation, the roller chain 35 is mechanically moved with respect to the shutter curtain 1 that is closing and moving as described above. The lock means 68 is mechanically locked, and a large tension force due to the weight of the shutter curtain 1 acts on the first portion 35 </ b> A of the roller chain 35.

  Further, since the movable member 90 is provided with the extension member 95 inserted into the left and right guide rails 6 as described above, the obstacle 34 exists inside these guide rails 6. Even in this case, as described above, the relative movement of the movable member 90 and / or the lifting member 91 with respect to the curtain main portion 71A occurs. For this reason, in this case as well, the roller chain 35 is mechanically locked by the mechanical locking means 68 with respect to the shutter curtain 1 being closed and moved, and the first portion 35A of the roller chain 35 has A large tension due to the weight of the shutter curtain 1 acts.

  Thus, when a large tension force acts on the first portion 35A of the roller chain 35, the reversing action by the swinging around the fulcrum shaft 40A of the lever member 40 provided in the processing device 37 shown in FIG. The rotation member 39 of the processing device 37 rotates in the direction D in FIG. 4 against the return spring 100 described above, and the amount of rotation is an arc-shaped elongated hole 39B into which the stop member 101 is inserted. Depending on the length of the. The rotation at this time rotates the pinion gear 103 of the rotary damper 102 in the F direction. However, the rotation of the pinion gear 103 in the F direction does not generate a resistance force due to the viscous fluid in the damper 102 as described above. For this reason, the rotating member 39 rotates in the direction D at a high speed due to the tension force acting on the roller chain 35, and the first control wire 111 having one end connected to the rotating member 39. Will be pulled.

  In the present embodiment, the roller chain 35 is not directly connected to the lever member 40, and the coil spring is an elastic member for shock load buffering between the roller chain 35 and the lever member 40. 41 is interposed, even if the above-described large tension force acts on the roller chain 35 instantaneously, this tension force does not directly act on the rotating member 39, and the tension force is relaxed and rotated. The moving member 39 can be acted on.

  Even when the amount of rotation of the rotating member 39 in the D direction reaches a limit value defined by the stop member 101 inserted in the arc-shaped elongated hole 39B, the shock load buffering action by the coil spring 41 is also used. Further, it is possible to prevent a large impact load from propagating between the roller chain 35 and the lever member 40.

  When the first control wire 111 is pulled as described above, the other end portion of the first control wire 111 is a slide whose front end is in the I position as shown in FIG. Since the slide member 120 is connected to the member 120, the slide member 120 moves backward against the spring 121. The amount by which the first control wire 111 is pulled and the amount by which the slide member 120 is retracted are the amounts defined by the length of the long hole 39B of the rotating member 39 shown in FIG. The front end position does not move back to the retreat limit where it becomes the H position in FIG. 12, and the front end position stops at the position where it is the J position, that is, an intermediate position between the H position and the I position. The state at this time is shown in FIG. At this time, the position of the slide member 120 with which the roller 130 of the bending lever member 129 is in contact has moved in the length direction of the slide member 120, which is the slide direction of the slide member 120, as compared with the case of FIG. The roller 130 is still in contact with the inclined surface 120C described above.

  Further, since the position of the front end of the slide member 120 at this time is retreated from the I position to the J position, the first member 31A of the lever member 31 of FIGS. 3 and 11 is moved by the operating member 122 of the slide member 120. The load that has been pressed in the direction A in FIG. 3 is released. For this reason, the brake means 19 of the switch 13 is switched from off to on. When the brake means 19 is turned on, the drive shaft 14 of the opening / closing machine 13 cannot rotate, so that the winding shaft 11 to which the upper end of the shutter curtain 1 is coupled cannot also rotate.

  Therefore, the shutter curtain 1 that is in contact with the obstacle 34 closes and stops moving at the contact position. Since this stop is performed by the operation of the mechanical locking means 68 described above, after the shutter curtain 1 is closed and started to move, it is caused by the occurrence of a disaster such as a fire or for other reasons. Even if the building in which the shutter device according to the embodiment is installed has a power failure, the shutter curtain 1 that is in contact with the obstacle 34 during the closing movement can be stopped.

  Further, the mechanical lock means 68 according to the present embodiment is constituted by a ratchet wheel 65 and a ratchet member 66 that bites into the ratchet wheel 65, and the movement of the roller chain 35 with respect to the shutter curtain during the closing movement. The second sprocket wheel 62 serving as a guide member for guiding the mechanical mechanism is not a member constituting the mechanical lock means 68. Further, the second sprocket wheel 62 that performs a rotational motion by the roller chain 35 that moves with respect to the shutter curtain 1 that is being closed is a first motion member, and the second motion member and the second motion member The ratchet wheel 65 is coupled, and the ratchet member 66 serving as a restraining member for restraining the rotational movement of the ratchet wheel 65 is engaged with the ratchet wheel 65, whereby the closing movement of the shutter curtain 1 is stopped. Will do.

  For this reason, according to the present embodiment, the closing movement of the shutter curtain 1 is stopped more than the case where the closing movement of the shutter curtain 1 is stopped by applying a frictional force caused by the friction member to a bridging member such as a roller chain. Therefore, the magnitude of the mechanical locking force that can be generated can be increased.

  Furthermore, in this embodiment, as shown in FIG. 1, the processing device 37 described above is not disposed at the central position B in the width direction of the shutter curtain 1, and from this central position B, the shutter curtain 1. In the width direction, the opening / closing machine 13 and the automatic closing device 32 are arranged at positions displaced to one side. For this reason, the length of the first control wire 111 wired between the processing device 37 and the automatic closing device 32 can be shortened. Therefore, when the shutter curtain 1 in the closing movement comes into contact with the obstacle 34, the aforementioned pulling force acting on the first control wire 111 from the rotating member 39 of the processing device 37 is instantaneously applied to the automatic closing device 32. Thus, the brake means 19 of the switch 13 can be quickly turned on.

  Note that, for example, a large object is present between the processing device 37 and the automatic closing device 32, and thus there is not enough space for the first control wire 111 to be wired at the location. When it is impossible or difficult to wire the first control wire 111 having a reduced length between the automatic closing device 32 and the automatic closing device 32, the position of the processing device 37 in the lintel 16 is set as described above. By changing the position, the first control wire 111 is routed between the processing device 37 and the automatic closing device 32 by passing through a space where the first control wire 111 can be routed. Good. As a result, the opening / closing device 13 and the automatic closing device 32 are arranged on both sides of the shutter curtain 1 in the width direction, which are divided by the center position B in the width direction of the shutter curtain 1 at the position of the lintel 16 where the processing device 37 is arranged. The position on the side opposite to the side where the processing is performed may be set, and the position of the processing device 37 may be a position far beyond the central position B from the positions of the opening / closing device 13 and the automatic closing device 32.

  As described above, the shutter curtain 1 in the closing movement comes into contact with the obstacle 34, the brake means 19 of the switch 13 is turned on, and the closing movement of the shutter curtain 1 is stopped. Then, the obstacle 34 is removed. Then, the movable member 90 of the shutter curtain 1 is lowered. By this lowering, the elevating member 91 is also lowered, the swinging member 81 returns and swings downward about the fulcrum shaft 80, and the ratchet member 66 also swings back and swings around the fulcrum shaft 67 with the protruding portion 66E facing downward. Therefore, the mechanical lock state of the roller chain 35 by the mechanical lock means 68 is released.

  As a result, the tension force acting on the roller chain 35 disappears, and the rotating member 39 on which the return force by the return spring 100 of the processing device 37 of FIG. 4 is acting rotates in the direction C of FIG. As a result of this rotation, the slide member 120 of the automatic closing device 32 that has been pulled in the backward direction by the first control wire 111 is moved from the J position shown in FIG. The forward movement to the I position indicated by is performed. For this reason, the brake means 19 of the opening / closing machine 13 is switched again from on to off, and the shutter curtain 1 resumes its closed movement.

  When the rotating member 39 rotates in the direction C in FIG. 4, the pinion gear 103 of the rotary damper 102 rotates in the E direction, and a resistance force due to the viscous fluid is generated in the damper 102 in the E direction. 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 FIG. 14, and the brake means 19 of the switch 13 is switched from ON to OFF by this shift. Due to the delay action of the damper 102, it is not performed instantaneously. Therefore, in this embodiment, the processing device 37 which is a device for connecting the roller chain 35 and the first control wire 111 is also a delay device, and the delay function of this delay device causes a failure. Since the shutter curtain 1 is closed and restarted by the removal of the obstacle 34, it starts with a time delay from the removal of the obstacle 34. Therefore, the removal work of the obstacle 34 can be performed with a time margin. it can.

  In this embodiment, the viscous fluid damper 102 is used as a delay device for restarting the closing movement of the shutter curtain 1 with a time delay from the removal of the obstacle 34 as described above. For example, a mechanical device including a mainspring timer may be used. According to this mechanical delay device, unlike the viscous fluid damper 102, the delay time can be set more accurately without being affected by the environmental temperature.

  After the shutter curtain 1 is fully closed, by applying a pulling force to the third control wire 113, the slide member 120 of the automatic closing device 32 returns to the position H at FIG. Therefore, the entire automatic closing device 32 returns to the initial state shown in FIG.

  In addition, when the shutter curtain 1 is fully opened, the shutter curtain 1 starts to move by operating the “close” button of the operating device 30 shown in FIG. Even when 1 comes into contact with the obstacle 34, as in the case described above, the mechanical lock means 68 locks the roller chain 35, so that a tension force acts on the roller chain 35.

  For this reason, when the closing movement of the shutter curtain 1 is performed by operating the “close” button of the operating device 30 in this way, the tension of the roller chain 35 is caused by the lever member 40 and the processing device 37. It acts on the slide member 120 of the automatic closing device 32 via the rotating member 39 and the first control wire 111. Since the roller 130 of the bending lever member 129 is fitted in the concave portion 120B of the slide member 120 at this time, the shutter curtain 1 is slightly closed due to the dent deformation of the obstacle 34 or the like. After descending, it can be stopped.

  Note that the shutter device according to the present embodiment can also be applied to a shutter device dedicated to disaster prevention.

  In the shutter device according to the present embodiment, most of the roller chain 35 serving as a bridging member is housed inside the guide rail 6A and inside the shutter curtain 1, so that most of the roller chain 35 is contained. Can be protected from external force.

  FIG. 16 shows the mechanical locking means 268 of the first alternative embodiment according to the present invention. The upper end of the roller chain 235 which is a bridging member in this embodiment is connected to the lever member 40 of the processing device 37 disposed in the lintel 16 as in the above embodiment, and the lower end of the roller chain 235 is the guide rail 6A. Alternatively, the roller chain 235 is linearly disposed from the lever member 40 of the processing device 37 to the coupling member, although coupled to the floor 4 by a coupling member. A sprocket wheel 262 serving as a first motion member and a ratchet wheel 265 serving as a second motion member are coaxially connected to the curtain main portion 71A of the shutter curtain 1 and arranged. A part of the sprocket wheel 262 protrudes from the curtain main part 71A in the thickness direction of the shutter curtain 1, and is separated from the curtain main part 71A in the thickness direction of the shutter curtain 1 by this part of the sprocket wheel 262. The roller chain 235 arranged in this manner is engaged.

  A ratchet member 266, which serves as a restraining member, is attached to the swinging member 81 that is swingable in the vertical direction around the fulcrum shaft 80 inside the curtain main portion 71A. . For this reason, when the shutter curtain 1 in the closed movement comes into contact with an obstacle, the ratchet member 266 is engaged with the ratchet wheel 265 by the movement of the movable member 90 and / or the lifting member 91 relative to the curtain main portion 71A. Therefore, the mechanical lock means 268 locks the roller chain 235 with respect to the shutter curtain 1 that is closing and moving.

  FIG. 17 shows a mechanical locking means 368 according to a second alternative embodiment of the present invention. The roller chain 335 serving as a bridging member in this embodiment has a U shape that is folded back by the seat plate 1B of the shutter curtain 1, and one end of the roller chain 335 is formed in each of the previous embodiments. Similarly to the form, the lever member 40 of the processing device 37 disposed on the lintel 16 is connected, and the other end is coupled to the winding shaft of the winding device disposed on the lintel 16. The roller chain 335 can be wound and unwound by the take-up shaft, and the take-up shaft is provided with a return spring for rotating the take-up shaft in the direction of winding the roller chain 335. The return force of the return spring prevents the roller chain 335 from being loosened when the shutter curtain 1 is opened / closed and stopped.

  Also in this embodiment, the main curtain portion 71A of the shutter curtain 1 is coaxially provided with a sprocket wheel 362 that is a guide member and a first motion member, and a ratchet wheel 365 that is a second motion member. The sprocket wheel 362 is disposed so as to protrude from both sides of the shutter curtain 1 in the thickness direction of the shutter curtain 1 in the thickness direction of the shutter curtain 1. The roller chain 335 passing through the seat plate 1B in the thickness direction of the shutter curtain 1 is folded around the sprocket wheel 262 into a U shape by being hung around the lower part of the sprocket wheel 262. .

  Further, a ratchet member 366 serving as a restraining member is attached to the swinging member 81 that is swingable in the vertical direction around the fulcrum shaft 80 inside the curtain main portion 71A. ing. For this reason, also in this embodiment, when the shutter curtain 1 in the closing movement comes into contact with an obstacle, the ratchet member 366 is moved by the movement of the movable member 90 and / or the lifting member 91 relative to the curtain main portion 71A. The mechanical lock means 368 locks the roller chain 335 with respect to the shutter curtain 1 that is closing and moving.

  FIG. 18 shows a mechanical locking means 468 according to a third alternative embodiment of the present invention. The upper end of the roller chain 435 which is a bridging member in this embodiment is connected to the lever member 40 of the processing device 37 disposed in the lintel 16 as in the first alternative embodiment of FIG. The lower end of 435 is coupled to the guide rail 6A or the floor 4 by a coupling member. For this reason, the roller chain 435 is linearly arranged from the lever member 40 of the processing device 37 to the coupling member. A sprocket wheel 462 serving as a first motion member and a ratchet wheel 465 serving as a second motion member are coaxially connected to the curtain main portion 71A of the shutter curtain 1 and arranged. A part of the sprocket wheel 462 protrudes from the curtain main part 71A in the thickness direction of the shutter curtain 1, and is separated from this part of the sprocket wheel 462 in the thickness direction of the shutter curtain 1 from the curtain main part 71A. The roller chain 435 arranged in mesh is engaged.

  In this embodiment, a swing member that is swingable in the vertical direction about the central axis is not disposed in the curtain main portion 71A. However, the elevating member 91 is provided with a ratchet member 466 serving as a restraining member. For this reason, when the shutter curtain 1 in the closed movement comes into contact with an obstacle, the ratchet member 466 is engaged with the ratchet wheel 465 by the movement of the movable member 90 and / or the lifting member 91 relative to the curtain main portion 71A. Therefore, the mechanical lock means 468 locks the roller chain 435 with respect to the shutter curtain 1 that is closing and moving.

  The present invention relates to a shutter device in which a shutter curtain is an opening / closing body, a sliding door device, a sliding door device, and various opening / closing devices such as an awning device and a smoke proof curtain device, and the opening / closing body in the closing movement is an obstacle. It can be used to mechanically stop this closing movement when it comes into contact with an object.

DESCRIPTION OF SYMBOLS 1 Shutter curtain which is an opening / closing body 1A Curtain body which is an opening / closing body main body 1B Seat plate which is an end member 13 Opening / closing machine 19 Brake means 32 Automatic closing device 34 Obstacle 35 Roller chain which is a string-like member 62 First motion member Sprocket wheel 65 Ratchet wheel 65A which is also a second motion member 65A Claw portion 66 Ratchet member 66D Claw portion 67 Support point shaft 68 Mechanical locking means 70A Fixed portion fixed to curtain body of end member 70B Movable portion of end member 120 Slide member

Claims (6)

When the opening / closing body configured to include the opening / closing body main body and an end member provided at the lower end of the opening / closing body main body comes into contact with an obstacle during the closing movement, the closing movement is mechanically stopped. A mechanical opening / closing body stopping device of the opening / closing device for causing
Brake means for stopping and moving the opening and closing body by turning on and off, a slide member that is slidable to switch on and off the braking means, and the opening and closing body When the end member of the opening / closing body in the closing movement comes into contact with an obstacle, the string-like member is mechanically locked with respect to the opening / closing body. And a mechanical lock means for causing a tension force for turning on the brake means by the weight of the opening / closing body to slide.
The mechanical locking means includes a ratchet member that swings around a fulcrum shaft when the end member of the opening / closing body that is closing is in contact with the obstacle, and a claw portion of the ratchet member is engaged. And a ratchet wheel having a claw portion to be inserted,
A mechanical opening / closing body stopping device for an opening / closing device, wherein the claw portion of the ratchet member is provided at an end portion of the ratchet member in a length direction.   2. The mechanical opening / closing body stopping device for an opening / closing device according to claim 1, wherein the fulcrum shaft is disposed at a position away from the claw portion of the ratchet member in the length direction of the ratchet member. A mechanical opening / closing body stopping device for the opening / closing device.   3. The mechanical opening / closing body stopping device for an opening / closing apparatus according to claim 1 or 2, wherein the length direction of the ratchet member is a width direction of the opening / closing body, and the ratchet member and the ratchet wheel are connected to the opening / closing body. A mechanical opening / closing body stopping device for an opening / closing device, wherein the opening / closing device is arranged in parallel in the width direction.   The mechanical opening / closing body stopping device for an opening / closing device according to any one of claims 1 to 3, wherein the height position of the ratchet member with respect to the claw when the ratchet wheel is engaged with the claw is A mechanical opening / closing body stopping device for an opening / closing device, characterized in that the position is lower than a fulcrum shaft.   The mechanical opening / closing body stopping device for an opening / closing device according to any one of claims 1 to 4, wherein the ratchet wheel is a second motion member that rotates, and the second motion member is a first motion member that rotates. The first movement member is rotated together with the first movement member, and the first movement member is rotated by the string-like member that moves relative to the opening / closing body when opening / closing. A mechanical opening / closing body stopping device for an opening / closing device. 6. The mechanical opening / closing body stopping device for an opening / closing device according to claim 5, wherein the string-like member is wound around the first motion member.

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