JP2010133169A - Shutter device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter device which makes a descending motion of a shutter curtain mechanically locked in a door-opened state and unlocked in a door-closed state, and which has the shutter curtain and a wind door structurally juxtaposed. <P>SOLUTION: In this shutter device 1, one side of the ascendable/descendable shutter curtain 2 is equipped with the wing door 7; and a guide groove 7a for guiding the ascent/descent of the one side of the shutter curtain 2 is vertically provided at the opening/closing end of the wing door 7. The shutter device 1 enables the shutter curtain 2 to descend along the guide groove 7a by the full closing of the wing door 7. The shutter device includes a locking means which mechanically locks the descent of the shutter curtain 2 in the opened or semi-opened state of the wing door 7, and an unlocking means which allows the one side of the shutter curtain 2 to descend along the guide groove 7a, by unlocking the locking means when the wing door 7 is closed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to, for example, a shutter device with a sleeve door that is used as a smoke-proof shutter and includes a sleeve door that can be opened and closed in the front-rear direction on one side of a shutter curtain that can be raised and lowered. The present invention relates to a shutter device that prevents the shutter curtain from descending when it is not completely closed.

  In a shutter device in which a guide groove is formed at the open / close end of a sleeve door provided on one side of the shutter curtain, the sleeve door must be in the closed state in order to close the shutter curtain from the shutter curtain open state. It is necessary to lower one side of the shutter curtain along the guide groove formed in the sleeve door in the closed state.

  For this reason, conventionally, as shown in Patent Document 1, an electrical detection means such as a sleeve door detection limit switch is provided, and the detection of this detection means releases the brake of the winding mechanism. Yes.

In addition, as shown in Patent Document 2, there is also one that performs a shutter curtain closing start operation after a predetermined time has elapsed after confirmation of closing.
JP 2006-200343 A JP 2001-220973 A

  In any detection and interlocking mechanism, electrical signal transmission is involved in interlocking control between the sleeve door closure and the shutter curtain closure, and it is uneconomical because it consumes standby power such as a battery or commercial power supply. In the event of a power outage that is likely to occur in the event of a battery-up or fire, there is a risk that the interlocking system between the sleeve door and the shutter curtain may be disabled.

  The present invention solves the above-mentioned problems, and the object of the present invention is to mechanically lock the lowering motion of the shutter curtain in the door open state without electrical detection means, and in the door closed state. By releasing the lock, it is possible to provide a shutter device that can prevent waste of power consumption and, for example, neutralization of the system due to power interruption in the event of a fire.

  Next, means for achieving the above object will be described with reference to the drawings. The present invention includes a sleeve door 7 on one side of the shutter curtain 2 that can be raised and lowered, and an open / close end of the sleeve door 7. A shutter device in which a guide groove 7a for vertically guiding one side portion of the shutter curtain 2 is provided vertically and the sleeve door 7 is completely closed, so that the shutter curtain 2 can descend along the guide groove 7a. 1, the locking means for mechanically locking the lowering of the shutter curtain 2 in a state where the sleeve door 7 is opened or semi-opened, and the locking means is unlocked when the sleeve door 7 is closed. Thus, there is provided a lock releasing means for allowing one side portion of the shutter curtain 2 to descend along the guide groove 7a.

The shutter device according to the present invention can be used as a shutter device for opening and closing a normal building opening or passage in addition to a smoke-proof shutter. The shutter curtain 2 can be a sheet shutter, a panel shutter, or a pipe shutter in addition to a slat curtain. The guide groove 7a may be formed integrally with the inner frame of the sleeve door 7, or may be formed by integrally providing a guide rail having a substantially U-shaped cross section on the inner frame.
In the present invention, both the shutter curtain and the sleeve door are closed to close the predetermined opening, but the shutter curtain and the sleeve door are respectively in the closed state and the open state are the openings in which each is closed. In other words, the state in which the portion is closed / opened, in other words, the state in which the space is partitioned or not partitioned by the portion in the opening to be closed is shown.

  Further, in the present invention shown in claim 2, as shown in the first embodiment of FIGS. 2 and 3 in particular, the locking means and the unlocking means are disposed on the sleeve door 7 in the door closed state. A shutter curtain guide 12 provided on the upper frame 11 and formed with a guide groove 13 coinciding with the guide groove 7a in the closed state of the sleeve door 7, and a pivotable attachment across the guide groove 13 of the shutter curtain guide 12 And a support pin 18 that supports the other end of the lock plate 15 at one end 17a, an operation plate 17 that is swingably attached to the shutter curtain guide 12, and an open / close end of the sleeve door 7. When the sleeve door is closed, the operating plate 17 is brought into contact with the other end 17 b protruding from the shutter curtain guide 12, thereby rotating the operating plate 17 to support the support pin 1. The lock release plate 21 for separating the lock plate 15 from the lock plate 15 is provided. When the support pin 18 is separated from the lock plate 15, the lock plate 15 moves to the side of the guide groove 13 of the shutter curtain guide 12, and the shutter curtain 2 is allowed to descend along the guide groove 13 of the shutter curtain guide 12 and the guide groove 7a of the sleeve door 7 opening / closing end.

  In the present invention described in claim 3, the actuating plate 17 has a bell crank shape, and is provided with the support pin 18 for supporting the other end side of the lock plate 15 from below on the one end 17a side which is the upper end side thereof. At the same time, the other end 17b, which is the lower end, protrudes from the shutter curtain guide 12, and when the sleeve door 7 is closed, the unlocking plate 21 provided on the sleeve door 7 pushes the other end 17b of the operating plate 17. Thus, the operation plate 17 is rotated to separate the support pin 18 from the lock plate 15.

Further, in the present invention shown in claim 4, as shown particularly in the second embodiment of FIGS. 4 and 5, the locking means and the unlocking means are arranged above the sleeve door 7 in a sleeve door closed state. A case 32 fixed to the outer side of the upper frame 11, one end 34 a pivotably attached to the case 32, and the other end 34 b projecting laterally from the case 32, and one end supported 34, and an operating pin 37 having the other end protruding below the upper frame 11 and a spring means 39 having one end connected to the case 32 and the other end connected to the support rod 34,
The support rod 34 is extended toward the lower surface of the seat plate 2a provided at the lower end of the shutter curtain 2 on the other end 34b side protruding from the case 32. When the sleeve door 7 is opened, the other end 34b side is extended. By supporting the seat plate 2a with the protruding portion, the lowering of the shutter curtain 2 is restricted, and the sleeve pin 7 is closed, so that the outer surface of the sleeve door 7 against the spring pressure by the spring means 39 has the operating pin 37. In the closed state of the sleeve door 7 where the other end 34b of the support rod 34 is pushed off the seat plate 2a by pressing, one side of the shutter curtain 2 descends along the guide groove 7a at the sleeve door 7 open / close end. It is characterized by being allowed to do.

  In the present invention described in claim 5, the seat plate 2a provided at the lower end of the shutter curtain 2 is provided with a safety device, and the seat plate 2a is brought into contact with the protruding portion on the other end 34b side of the support rod 34. The state is characterized in that the lowering of the shutter curtain 2 is stopped or raised.

Furthermore, in the present invention shown in claim 6, as shown in the third embodiment of FIG. 6 in particular, the take-up drive mechanism 5 that winds up the upper end side of the shutter curtain is a drive unit that can be used when the shutter curtain is rolled up. And an automatic closing device 43 in which an opening / closing device 40 having a brake for holding the rolled-up shutter curtain in the winding-up position and an operating portion 42 protruding in a detachable manner from a brake lever 41 connected to the brake of the opening / closing device are protruded. The locking means and the unlocking means are arranged at a door contact position in the upper frame 11 arranged at the upper part of the sleeve door 7 in the state where the sleeve door is closed, and the spring pressure of the spring means 44 is provided. Is connected to one end of the operating pin 45, which is always urged and projected toward the sleeve door 7, the operating rod 46 which is above the operating pin 45 and protrudes above the upper frame 11, and the operating rod 46. And a connecting body 47 having the other end connected to the operating end of the automatic closing device 43. When the sleeve door 7 is closed from the open state, the operating pin 45 is moved against the spring pressure by the spring means 44. As a result of immersing and moving the connecting body 47 by the immersing movement of the operating rod 46, the trigger which is the operating end in the automatic closing device is released and the operating part pops out. As a result of releasing the brake, the shutter curtain 2 is lowered by its own weight. In this case, one side portion of the shutter curtain 2 is allowed to descend along the guide groove 7a at the sleeve door opening / closing end.
As the brake, a negative operation type (spring close type) brake can be used effectively.
The driving method of the driving means may be a manual mechanism, an electric motor, or another engine.

  Therefore, according to the present invention, the shutter curtain lowering is locked and released by mechanical means, and no electrical means are interposed, so power consumption is wasted or the system is disabled due to a power failure due to a power failure, such as in a fire. Can be expected, and the best effect as a smoke-proof shutter can be expected. Further, the present invention can be applied to a shutter device having a sleeve door other than the smoke-proof shutter.

  According to invention of Claim 2 and 3, a structure is simple and implementation is easy.

  Similarly to the above, the inventions of claims 4 and 5 are simple in structure and easy to be retrofitted, and are adapted to a smoke-proof shutter and the like, thereby improving safety.

  According to the sixth aspect of the present invention, the lowering operation of the shutter curtain is performed by detaching the brake provided in the drive mechanism, so that the lowering operation can be performed reliably.

  FIG. 1 shows the overall configuration of a shutter device to which the present invention is applied. In the shutter device of the embodiment, a freely movable shutter curtain 2 that constitutes the shutter device 1 and a sleeve door 7 that opens and closes in the front-rear direction are juxtaposed, and automatically in a fire or the like by a smoke detector or a heat detector. Alternatively, a smoke-proof shutter that manually closes a building opening or passage is configured.

  In the figure, a shutter device 1 is configured such that an opening and a passage formed on a wall surface of a building are closed so as to be movable up and down, and a seating plate 2a is integrated in a lower part, and a shutter curtain 2 is installed horizontally on the upper part of the opening. 2 and the shaft 3 to be stored in the winding state, and a pair of support shafts 4 provided at both ends of the shaft 3, and are connected to one support shaft 4 (shown on the right side of the figure). And a shutter curtain winding drive mechanism 5 that drives the shaft to rotate forward and reverse, and a fixed guide rail 6 that is vertically provided on one side wall of the opening and guides one side of the shutter curtain 2 to be raised and lowered. . Further, the guide rail 6 is located on the opposite side of the shutter curtain 2 and is located on the same plane as the shutter curtain 2 in the closed state, and is openable and closable so as to be positioned on the inner side wall in the opened state. A sleeve door 7 formed with a guide groove 7a, which will be described later, that guides the other side of the shutter curtain 2 to be movable up and down along the vertical direction at the opening and closing ends, and a child door 8 provided in the sleeve door 7 so as to be openable and closable. In the vicinity of the sleeve door 7, a closing instruction switch 9 attached to the wall surface is provided. The closing instruction switch 9 is connected to the drive mechanism 5 via a repeater 10.

  In the above, when the shutter curtain 2 is fully opened and the sleeve door 7 is located at the closed position, by operating the closing instruction switch 9 or by detecting operation such as smoke detectors or fire detection provided in each part of the building, At the timing when the clutch of the negative operation type (spring rose type) brake provided on the drive mechanism 5 is disengaged and the sleeve door 7 is closed, the shutter curtain 2 is fixed to the guide rail 6 and the sleeve door on both sides by its own weight. 7, the shutter curtain 2 is closed as shown in the drawing.

  On the other hand, when the sleeve door 7 is open, the lowering operation of the shutter curtain 2 is locked in the stopped state, although the brake clutch of the drive mechanism 5 is disengaged. When the sleeve door 7 is closed, the lowering operation of the shutter curtain 2 is started at that timing. In the present invention, the timing control of the shutter curtain descending operation is not based on the conventional electrical determination of the position of the sleeve door 7 and its interlocking, but the same operation is performed only by mechanical interlocking. Is.

  2 (a), 2 (b), 3 (a), and 3 (b) show the first embodiment. In the figure, an upper frame 11 (see FIG. 2) is provided horizontally along an upper portion of the sleeve door 7 in the closed position, and a vertically long rectangular shutter curtain guide 12 opened vertically is formed at the upper end of the upper frame 11. It is erected integrally. The shutter curtain guide 12 guides the end of the shutter curtain 2 up and down, and is formed with a groove-shaped guide groove 13 having a front portion opened in the vertical direction and an upper portion expanded.

  On the front surface of the shutter curtain guide 12 (inner side surface of the building opening), on one surface (shown on the right side of the drawing) sandwiching the guide groove 13 is a link plate-like lock plate 15 that can rotate around a fulcrum pin 14. Is provided. A bell crank-like interlocking plate 17 is rotatably provided via a fulcrum pin 16 on the inner side of the other surface (shown on the left side of the drawing) sandwiching the guide groove 13. A support pin 18 for supporting the lock plate 15 is provided at one end 17a which is an upper end portion of the interlocking plate 16, and this support pin 18 is formed on the other surface through an arc-shaped slit 19 formed through the front surface of the shutter curtain guide 12. The other end 17d that protrudes and serves as the lower end protrudes outwardly from the side surface through a longitudinal slit 20 (see FIG. 3A) formed in the side wall of the shutter curtain guide 11.

  On the open / close end face of the sleeve door 7, the above-described guide groove 7 a that coincides with the lower portion of the guide groove 13 of the shutter curtain guide 12 in the closed state is formed along the longitudinal direction. A lock release plate 21 that is opposed to the longitudinal slit 20 in a closed state is fixed to the upper part on the back side of the open / close end of the sleeve door 7. The guide groove 7 a may be formed integrally with the inner frame of the sleeve door 7 or may be formed by fixing a U-shaped guide rail to the inner frame of the sleeve door 7.

  In the above configuration, as shown in FIGS. 2A and 3A, the sleeve door 7 is opened, and the opening and closing ends of the sleeve door 7 are separated from the shutter curtain guide 12. By setting the 17 support pins 18 to be positioned at the support position of the lock plate 15, the lock plate 15 interferes with the downward movement path of the shutter curtain 2 to prevent it from interfering with the shutter curtain guide 12. Even if the clutch of the drive mechanism 5 is disengaged and the shutter curtain 2 starts to move downward due to its own weight, the lower end of the shutter curtain 2 comes into contact with the lock plate 15 and the shutter curtain 2 is locked. It stops at the top of the plate 15 and remains locked in the upper position.

On the other hand, as shown in FIGS. 2B and 3B, when the upper edge of the sleeve door 7 is closed to coincide with the lower edge of the upper frame 11, the guide groove of the shutter curtain guide 12 is closed. 13, the guide groove 7 a of the sleeve door 7 coincides with the lock release plate 21 abutting against the side surface of the shutter curtain guide 12. As a result, the operation plate 17 rotates downward via the fulcrum pin 16, and the support pin 18. Moves along the arc-shaped slit 19 and the lock plate 15 is detached. As a result, the shutter curtain 2 descends by its own weight and closes the opening.
The sleeve door 7 can be configured such that the restraint in the open state is released by the wall self-closing device, and the sleeve door 7 is closed by closing its own weight due to the inclination of the hinge. Closing of the sleeve door 7 is automatically started by operation of the closing instruction switch 9 or a fire detection / smoke detection signal.

  The shutter curtain 2 shown in FIG. 2 has a large number of slats 22 connected flexibly via hinged portions 22a and 22b that are curled up and down. The guide grooves 13 and 7a are connected to a lower seat plate 2a (see FIG. 1) disposed at a non-interference position.

  In the first embodiment, after the shutter curtain 2 is once closed, the drive mechanism 5 is re-driven to wind up and open the shutter curtain 2, and the sleeve door 7 is also returned to the open position, and then the lock. In order to return the plate 15 and the operating plate 17 to the original positions shown in FIGS. 2A and 3A again, the plate 15 and the operation plate 17 may be reset by manual operation by a maintenance worker, or weak biasing means such as a spring, for example. It is good also as a structure by which the lock plate 15 is always kept in a locked position in an open state by adding to a movable location.

  FIGS. 4A, 4B, and 5 show a second embodiment of the present invention. In the following description, portions common to the first embodiment will be described using the same reference numerals, and only different portions will be described using different reference numerals. In the figure, a lowering prevention device 30 that supports the lower surface of the seat plate 2 a of the shutter curtain 2 is fixed to the outer side of the upper frame 11 in the vicinity of the shutter curtain guide 12. The lowering prevention device 30 includes a case 32 fixed to the outer portion of the upper frame 11 via a bracket 31, and one end 34 a that is pivotably attached to the case 32 via a fulcrum pin 33, and the other end 34 b is a case. A substantially L-shaped support rod 34 projecting laterally of 32, one end connected to the support rod 34 via an action shaft 35, and a rear end penetrating a guide sleeve 36 provided on the case 32, An operating pin 37 projecting downward is provided, and a spring means 39 comprising a tension coil spring having one end connected to the case 32 and the other end connected to the support rod 34 via a connecting pin 38.

  The support rod 34 has a substantially L-shaped bent shape, and the other end 34b protruding from the case 32 extends toward the lower surface of the seat plate 2a. As shown in FIG. 5, when the sleeve door 7 is in the open state, the seat plate 2a is moved by the projecting portion of the projecting other end 34b arranged so as to interfere and prevent the downward movement of the shutter curtain 2 on the moving path. The lowering of the seat plate 2a and the shutter curtain 2 is regulated.

  From this state, when the sleeve door 7 is closed, the guide groove 7a of the sleeve door 7 coincides with the guide groove 13 of the shutter curtain guide 12, and the sleeve door resists spring pressure as shown in FIG. 4B. As a result of the outer surface of 7 pressing the operating pin 37, the other end 34b is detached from the seat plate 2a as the support rod 34 turns, and the shutter curtain 2 is lowered together with the seat plate 2a by its own weight.

  In the second embodiment, when the shutter curtain 2 is reopened from the closed state and the sleeve door 7 is moved to the open position, the support rod 34 is restored to the original position as shown in FIGS. It automatically returns to the lowered lock position. Further, since only the case 32 is fixed, retrofitting is easy. If a known safety device for detecting an obstacle with the seat plate 2a is provided, the seat plate 2a comes into contact with the other end 34b side of the support rod 34, so that the shutter curtain is braked by the brake in accordance with the contact detection in the seat plate 2a. When descent of 2 stops or rises (when the winding drive mechanism is equipped with an electric motor and power can be supplied, etc.), it operates on the safe side.

  6 (a) and 6 (b) show a third embodiment of the present invention. In the drawing, although the details of the internal structure of the shutter curtain winding drive mechanism 5 described above are omitted, a drive unit that can be used at the time of winding up the shutter curtain and a negative operation type for holding the rolled up shutter curtain in the winding position. An opening / closing machine 40 provided with a (spring closed type) brake, and an automatic closing device 43 protruding an operating part 42 that protrudes detachably from a brake lever 41 linked to the brake of the opening / closing machine 40.

  An operating pin 45 that is always projected and urged toward the sleeve door 7 by the spring pressure of the spring means 44 made of a compression coil spring is disposed at the door contact position in the upper frame 11. An operating rod 46 protruding upward is integrated. One end of a flexible connecting body 47 made of relays wire is connected to the operating rod 46, and this connecting body 46 is connected to the other end of the automatic closing device 43 through a guide 48 made of a wire guide fixed on the upper frame 11. It is connected to the operating end (not shown).

  Therefore, when the sleeve door 7 shown in FIG. 6 (a) is opened, and the sleeve door 7 is closed as shown in FIG. 6 (b), the operating pin 45 is immersed against the spring pressure. As a result of the movement of the connecting rod 46 due to the movement of the operating rod 46, the trigger which is the operating end in the automatic closing device 43 is released and the operating part pops out. As a result, the brake lever 41 is pressed to release the brake, thereby releasing the shutter curtain. 2 falls by its own weight.

  In the third embodiment, since the shutter curtain 2 is lowered by releasing the brake provided in the drive mechanism 5, the load due to the shutter curtain weight is applied to the lock release mechanism compared to the first and second embodiments. Can be hung.

  Moreover, in each embodiment, since all are based on a mechanical lock and its release mechanism, each may be a single mechanism or a combination of these mechanisms.

Next, FIGS. 7 a and b show the seal structure of the shutter curtain 2.
As shown in FIG. 7a, on the front side of the upper frame (not shown), a bracket 51 having a substantially L-shaped cross section is provided on the front upper portion of the shutter curtain 2 in a direction orthogonal to the paper surface. A horizontal member 52 having a substantially U-shaped cross section is provided, and the inner bottom portion of the U-shaped step portion 52a of the horizontal member 52 is elastic so that the front end portion is elastically pressed over the entire length of the shutter curtain 2 in the horizontal length direction. And the base part of the sealing piece 53 made of FRP having a sealing property is fixed. As shown in an enlarged view of a part of the figure, the base part of the seal piece 53 includes a seat plate 54 that sandwiches the base part of the seal piece 53 with the stepped portion 52a, and the seat plate 54 and the seal piece 53. It consists of a fixture 55 made of a mounting screw that penetrates and is screwed into the stepped portion 52a.

  In the embodiment of FIG. 7b, the bent base portion of the seal piece 53 is sandwiched between the vertical wall surfaces of the stepped portion 52a via the L-shaped seat plate 54 '.

  Thereby, the sealing piece 53 prevents the intrusion of smoke and dust by sliding and contacting the surface of the shutter curtain 2 while bending in the direction by the lowering and raising operations of the shutter curtain 2.

  The mounting structure of the seal piece 53 is conventionally a double fixing of the base portion and a permanent fixing method such as caulking, so replacement is troublesome, but in this embodiment, the structure is simple, In addition, since the seal piece 53 can be replaced simply by removing the fixing tool 55 made of a mounting screw, the structure is simple, the cost is low, and there are advantages of being made by maintenance.

It is the front view, side view, and top view which show the whole shutter apparatus structure to which this invention is applied. (A), (b) is a principal part front view which shows the shutter curtain lock | rock and unlocked state by 1st Embodiment of this invention. (A), (b) is a principal part perspective view which shows the shutter curtain lock | rock and a lock release state. (A), (b) is a top view which shows the shutter curtain lock | rock and unlocking state in 2nd Embodiment. It is a perspective view of the locked state. (A), (b) is explanatory drawing which shows the shutter curtain lock | rock and unlocking state by 3rd Embodiment of this invention. (A), (b) is principal part sectional drawing which shows the seal structure of a shutter curtain upper part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter device 2 Shutter curtain 2a Seat plate 3 Shutter curtain winding shaft 4 Support shaft 5 Drive mechanism 6 Guide rail 7 Sleeve door 7a Guide groove 8 Child door 9 Manual open / close switch 10 Repeater 11 Upper frame 12 Shutter curtain guide 13 Guide grooves 14, 16 Support pin 15 Lock plate 17 Actuation plate, 17a One end, 17b Other end 18 Support pin 19 Arc-shaped slit 20 Long slit 21 Lock release plate 22 Slat 22a, 22b Hinge part 30 Lowering prevention device 31 Bracket 32 Case 33 fulcrum shaft 34 support rod 34a one end 34b other end 35 working shaft 36 sleeve 37, 44 actuating pin 38 connecting pin 39 spring means 40 opening and closing machine 41 brake lever 42 actuating part 43 automatic closing device 44 spring means 45 actuating pin 46 actuating杆 47 Link 48 Guide

Claims (6)

A sleeve door that can be opened and closed in the front-rear direction is provided on one side portion of the shutter curtain that can be raised and lowered, and a guide groove that vertically guides one side portion of the shutter curtain is provided on the opening and closing end of the sleeve door, In the shutter device that enables one side portion of the shutter curtain to descend along the guide groove by completely closing the sleeve door,
Locking means for mechanically locking the lowering of the shutter curtain in a state where the sleeve door is open or semi-opened, and unlocking of the locking means when the sleeve door is closed, A shutter device comprising a lock release means for allowing a side portion to descend along the guide groove.   The lock means and the lock release means are provided on an upper frame disposed at an upper portion of the sleeve door when the sleeve door is closed, and a shutter curtain formed with a guide groove coinciding with the guide groove when the sleeve door is closed A guide, a lock plate that can be pivoted across the guide groove of the shutter curtain guide, a support pin that supports the other end of the lock plate at one end, and an operation that is swingably attached to the shutter curtain guide The support pin is separated from the lock plate by rotating the operation plate by contacting the other end protruding from the shutter curtain guide of the operation plate when the sleeve door is closed. The lock plate moves to the side of the guide groove of the shutter curtain guide when the support pin is separated from the lock plate. Both the shutter device according to claim 1, characterized in that one side of the shutter curtain is allowed to descend along the guide groove of the shutter curtain guide of the guide grooves and sleeves door closing end.   The actuating plate has a bell crank shape and includes the support pin for supporting the other end side of the lock plate from below on one end side which is the upper end side, and the other end side which is the lower end side is the shutter curtain guide. When the sleeve door is closed, the lock release plate provided on the sleeve door pushes the other end of the operation plate to rotate the operation plate so that the support pin is separated from the lock plate. The shutter device according to claim 2, wherein: The locking means and the unlocking means are a case fixed to an outer portion of an upper frame disposed at an upper portion of the sleeve door in a closed state of the sleeve door, and one end pivotably attached to the case and the other end Has a support rod protruding to the side of the case, one end connected to the support rod and the other end protruding below the upper frame, and one spring connected to the case and the other end to the support rod. And
The other end side protruding from the case extends toward the lower surface of the seat plate provided at the lower end of the shutter curtain. When the sleeve door is in the open state, the support rod has a protruding portion on the other end side. The lowering of the shutter curtain is controlled by supporting the plate, and the sleeve door is closed so that the outer surface of the sleeve door presses the operating pin against the spring pressure by the spring means, so that the other end side of the support rod is In the closed state of the sleeve door with the other end of the support rod being hung from the seat plate, the one side portion of the shutter curtain descends along the guide groove at the sleeve door opening / closing end. The shutter device according to claim 1, wherein the shutter device is allowed.   The seat plate provided at the lower end of the shutter curtain is provided with a safety device so that the lowering of the shutter curtain is stopped or raised when the seat plate is in contact with the protrusion on the other end of the support rod. The shutter device according to claim 4, wherein The winding drive mechanism that winds up the upper end side of the shutter curtain includes a drive unit that can be used when the shutter curtain is rolled up, a switch that has a brake for holding the rolled shutter curtain in the winding position, and a brake for the switch And an automatic closing device that protrudes an operating portion that protrudes detachably from the linked brake lever, and the locking means and the unlocking means are arranged at the upper part of the sleeve door when the sleeve door is closed. An operating pin that is provided at the door contact point in the upper frame and is always urged and projected toward the sleeve door by the spring pressure of the spring means, and an operating rod that is above the operating pin and protrudes to the upper part of the upper frame A connection body having one end connected to the bag and the other end connected to the operating end of the automatic closing device;
When the sleeve door is closed from the open state, the operating pin is immersed against the spring pressure by the spring means, and the connecting body is moved by the immersion movement of the operating rod. As a result of the trigger being released and the operating part popping out, the shutter curtain is lowered by its own weight by releasing the brake, and one side of the shutter curtain is allowed to descend along the guide groove at the sleeve door opening / closing end. The shutter device according to claim 1, wherein:

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