JP2005194788A - Shutter curtain opening/closing device of shutter apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shutter curtain opening/closing device of a shutter apparatus, which can be wholly downsized by shortening the radius of a rotating element including a winding shaft. <P>SOLUTION: The winding shaft 50, which serves as the rotating element and which rolls up/pays out a shutter curtain, is provided with a body 60 of nonrotation, which is not rotated in the rotation of the winding shaft 50, and a body 61 of rotation, which is rotated integrally with the winding shaft 50; a first shaft 63 of the body 60 is supported by a first bracket 51; a second shaft 70 of the body 61 is supported by a second bracket 52; and a return spring 66, which is connected in the state of being laid between the body 60 and a driving member 65 connected to the winding shaft 50, wherein a spring force is accumulated as pressure when the winding shaft 50 pays out the shutter curtain and which makes the accumulated spring force utilized when the shutter curtain is rolled up, is arranged in an axial length part wherein the winding shaft 50 does not overlap the body 60 axially shorter than the winding shaft 50. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention is a shutter curtain opening and closing device for opening and closing a shutter curtain of a shutter device, and includes a return spring in which a spring force accumulated when the shutter curtain is closed and moved is used when the shutter curtain is opened and moved The present invention relates to a curtain opening / closing device, and can be used for, for example, a disaster prevention shutter device that forms a disaster prevention section with a shutter curtain, or an opening shutter device that opens / closes an entrance / exit or a window with a shutter curtain.

  In a shutter device in which the shutter curtain is opened and closed by a rotating body that can rotate freely, a spring force is accumulated when the shutter curtain is closed, and this accumulated spring force is used when the shutter curtain is opened and moved. Some have springs. The opening / closing moving body in the shutter curtain opening / closing device of the shutter device shown in Patent Document 1 below is a winding shaft that winds and unwinds the shutter curtain to move the shutter curtain open / close. This shutter curtain opening / closing device Includes a winding shaft, a non-rotating body which is arranged coaxially or substantially coaxially with the winding shaft on the inner diameter side of the winding shaft, and which does not rotate at least when the winding shaft rotates, and a return spring. This return spring is spanned and connected between the winding shaft and the non-rotating body, and when the winding shaft rotates in order to extend the shutter curtain, that is, to move the shutter curtain, the return spring is To accumulate pressure and wind up the shutter curtain, ie to open and move the shutter curtain When the winding shaft is reversely rotated, the accumulator is a spring force is utilized.

The non-rotating body shown in Patent Document 1 has a sufficiently long axial length that is the same as the winding shaft, and the return spring by the coil spring is inserted into the winding shaft. It is arranged in a state of being wound around the outer periphery of this non-rotating body.
JP2003-310777 (paragraph number 0027, FIG. 6)

  When the winding shaft winds up the shutter curtain, the substantial radius of the winding shaft increases by the amount of the shutter curtain winding diameter. For this reason, in order to reduce the size of the shutter curtain opening / closing device in the radial direction and to reduce the size of the entire device, it is required to reduce the radius of the winding shaft. However, as in the conventional example, the axial length of the non-rotating body arranged coaxially or substantially coaxially with the winding shaft on the inner diameter side of the winding shaft is approximately the same as the winding shaft. In the structure in which the return spring is arranged on the outer periphery of the non-rotating body, there is a limit to reducing the radius of the winding shaft.

  The shutter curtain opening / closing movement is not performed by winding and unwinding the shutter curtain by the winding shaft, but also by the rotation of the rotating moving body other than the winding shaft. It is preferable to be able to reduce the size of the entire apparatus, since the usefulness of the apparatus is improved.

  An object of the present invention is to provide a shutter curtain opening / closing device of a shutter device that can reduce the radius of a rotating moving body including a winding shaft and can reduce the size of the entire device.

  The shutter curtain opening and closing device of the shutter device according to the present invention includes a shutter curtain that can be freely opened and closed, a rotating moving body that rotates for opening and closing movement of the shutter curtain, and an inner diameter side of the rotating moving body that is coaxial with the rotating moving body. Or a non-rotating body that is arranged substantially coaxially and does not rotate at least when the rotating moving body rotates, and is bridged and connected between the rotating moving body and the non-rotating body for closing and moving the shutter curtain. In the shutter curtain opening and closing device of the shutter device, the spring force is accumulated during rotation of the rotating moving body, and the accumulated spring force has a return spring used to rotate the rotating moving body when the shutter curtain is opened and moved. The length in the axial direction of the non-rotating body is a length in which a portion not overlapping with the rotating moving body is generated. It is, it is characterized in that characterized in that these non-rotating body and the rotating body is the return spring in the axial length portion not overlapping are disposed.

  In this shutter curtain opening / closing device, the axial length of the non-rotating body is such that a portion that does not overlap with the rotating moving body is generated, and the axial length of the non-rotating body and the rotating moving body does not overlap. The return spring is not arranged on the outer periphery of the non-rotating body because the return spring is arranged in the portion. For this reason, the radius of the rotating moving body arranged on the outer diameter side of the non-rotating body can be reduced by this amount, and thereby the entire shutter curtain opening / closing device can be reduced in size.

  In the above invention, when the return spring is arranged in the axial length portion where the non-rotating body and the rotating moving body do not overlap, the entire return spring is placed in the axial length portion where the non-rotating body and the rotating moving body do not overlap. Alternatively, a part or a main part of the return spring may be arranged in an axial length portion where the non-rotating body and the rotating moving body do not overlap. In the latter, for example, a non-rotating body is connected to the return spring by forming a thin-diameter portion at the axial end of the non-rotating body and fitting the cylindrical end of the return spring around the outer periphery of the small-diameter portion. In other words, the end of the return spring in the axial direction is inserted into a hole or groove formed in the end of the non-rotating body, thereby connecting the non-rotating body and the return spring.

  Further, a part or all of the non-rotating body may be inserted into the rotating moving body, or the entire non-rotating body may be exposed to the outside of the rotating moving body.

  The return spring may be a coil spring or a spiral spring, and its shape, type, etc. are arbitrary.

  Furthermore, a part or all of the return spring may be inserted into the rotary moving body, or the entire return spring may be exposed to the outside of the rotary moving body.

  Further, the rotating body may be formed to include a hollow cylindrical member in which a part or all of the return spring is housed, and a plurality of wheels arranged apart in the axial direction may be formed into a rod-like or plate-like shape. It is good also as things, such as a cage | basket | car shape and a skeleton shape, connected with connection members, such as a shape, The shape, a structure, etc. are arbitrary.

  When the rotating moving body is formed to include a hollow cylindrical member, and a part or all of the return spring is stored inside the cylindrical member, the return spring is protected from external force by the stored amount. Can do.

  Further, as described above, in order to bridge and connect the return spring between the rotating body and the non-rotating body, one end of the return spring may be directly coupled to the non-rotating body, and indirectly through the intermediate member. The other end of the return spring may be directly connected to the rotating body or indirectly connected via an intermediate member.

  When the other end of the return spring is indirectly connected to the rotating moving body via the intermediate member, the intermediate member rotates integrally with the rotating moving body when the shutter curtain is closed, and thereby the return spring is wound. Since this return spring serves as a drive member for accumulating spring force, this drive member is coupled to the rotating body.

  As described above, when the other end of the return spring is connected to the drive member coupled to the rotating moving body, the non-rotating body in which one end of the return spring is connected directly or indirectly via an intermediate member, A structure in which the driving member is connected by a connecting body may be configured to constitute a unit in which the return spring, the non-rotating body, the driving member, and the connecting body are assembled in advance before the driving member is coupled to the rotating moving body.

  According to this, before the driving member is coupled to the rotating moving body, the return spring, the non-rotating body, the driving member, and the coupling body constitute a unit assembled in advance, the return spring, the non-rotating body, Since the drive member and the coupling body can be handled as a single structure, when performing operations such as assembling them to the rotating moving body, they can be easily handled and the assembling work to the rotating moving body can be easily performed. Yes.

  In this way, when the return spring, the non-rotating body, the drive member, and the coupling body are used as parts constituting a pre-assembled unit, the return spring can be visually recognized from the outside by using the coupling body as a rod-like member. Alternatively, the connecting body may be formed to include a hollow cylindrical member, and a return spring may be housed inside the cylindrical member.

  According to the latter, since the return spring is covered with the cylindrical member, the return spring can be protected by the cylindrical member when performing the operation of assembling the unit to the rotating body.

  In order to open and close the shutter curtain with the rotating moving body that is rotatable, the structure of the non-rotating body, the rotating moving body, and the members related thereto is arbitrary. As an example, the non-rotating body has a first shaft disposed on one end side in the axial direction of the rotating moving body, and the rotating moving body is disposed on the other end side in the axial direction of the rotating moving body. And a second shaft that rotates integrally with the rotating body. In this case, the return spring can be disposed between the first shaft and the second shaft.

  Further, the first shaft may be supported by the first support member in a non-rotating state, and the second shaft may be rotatably supported by the second support member, or the first shaft may be supported by the first support member. The first support member is disposed so as to be able to remove the first detent member for preventing the first shaft from rotating, and the second shaft is rotatably supported by the second support member. The support member may be provided with a second anti-rotation member for preventing the second shaft from rotating.

  According to the latter, when the first shaft is supported and supported by the first support member by the first detent member, and the second shaft is rotatably supported by the second support member, the rotating body rotates forward and backward. Thus, the shutter curtain can be opened and closed, and the first shaft is rotatably supported by the first support member by removing the first detent member from the first support member. 2 When the second shaft is supported on the second support member by being disposed on the second support member, the return spring is engulfed by rotating the first shaft. The operation for adjusting the accumulated pressure of the spring force of the return spring before the start or the like is performed with the first and second shafts arranged on both sides of the rotating body supported by the first and second support members. It will be obtained.

  A first anti-rotation member for removably disposing the first anti-rotation member on the first support member, and a second anti-rotation member for anti-rotating the second shaft relative to the second support member The structure for making it possible to be disposed on the second support member is arbitrary. One example is that the first and second detent members can be attached to and detached from the first and second support members with a coupling tool such as a screw, and the other examples are the first and second support members. The first and second anti-rotation members can be inserted into and removed from a space such as a space provided in the member. Still another example is between the first shaft and the first support member, and the second It is to provide the first and second members so that the straddling member straddling between the shaft and the second support member can be removed.

  In order to adjust the accumulated pressure of the spring force of the return spring before starting the closing movement of the shutter curtain as described above, a rotating member for rotating the first shaft is prepared. The first shaft may be rotated by this rotating member. The rotating member may be a member that manually rotates the first shaft, or a member that automatically rotates the first shaft by a driving force from a driving means such as an electric motor. A switching type that can be rotated may also be used.

  As described above, when the first and second shafts are supported by the first and second support members, the first and second support members may be separate members or different portions of the same member.

  The present invention described above can be applied to a shutter curtain opening / closing device having an arbitrary structure in which the opening / closing movement of the shutter curtain is performed by the rotation of a rotating moving body. One example is a device in which the rotating moving body is a winding shaft, and the shutter curtain is opened and closed by winding and unwinding the shutter curtain by this winding shaft, and the other example is a rotating moving body such as an overdoor. Is a rotating shaft for winding and feeding a string-like member such as a wire connected to the shutter curtain, and the shutter curtain is opened and closed through the string-like member by the rotation of the rotating shaft. The present invention also relates to a shutter curtain opening / closing device in which the rotating moving body is a rotating shaft provided with a gear and the shutter curtain having a tooth portion meshing with the gear is opened and closed by the rotation of the rotating shaft. Is applicable.

  In addition, the present invention can be applied to a shutter device for any application. That is, the shutter device to which the present invention is applied may be an opening shutter device that opens and closes an opening such as a window or an entrance with a shutter curtain, and is used for disaster prevention for forming a disaster prevention zone with a fully closed shutter curtain. It may be a shutter device, a garage shutter device, a storage shutter device, a vehicle carrier such as a truck, a shutter device for a container, or the like. The disaster prevention shutter device includes an elevator disaster prevention shutter device in which a shutter curtain moves between an elevator and an elevator hall when a disaster such as a fire occurs.

  In addition, the shutter curtain in the shutter device may be formed by connecting a plurality of slats or a main part of the shutter curtain, or may be formed by connecting a plurality of panels. It may be formed of a pipe, may be formed of a thin member such as cloth, may be formed of a net, or may be formed of at least two of these.

  The direction in which the shutter curtain is opened and closed by the rotating body may be the vertical direction, the left-right direction, or a direction having an inclination angle with respect to these directions.

  The shutter curtain closing movement direction may be downward and the shutter curtain opening movement direction may be upward. Alternatively, the shutter curtain closing movement direction may be upward and the shutter curtain opening movement direction is downward. Direction may be used.

  Further, the spring force of the return spring is accumulated when the shutter curtain is closed, and the shutter curtain is closed and moved by its own weight as long as the accumulated spring force is used when the shutter curtain is opened and moved. It may be made by the weight of the weight member, may be made by manual operation, may be made by a driving force from a driving means such as an electric motor, or may be made by combining at least two of these. Good. Further, the opening movement of the shutter curtain may be performed by the weight of the shutter curtain, may be performed by the weight of the weight member, may be performed manually, or may be performed by a driving force from a driving unit such as an electric motor. Alternatively, it may be a composite of at least two of these.

  According to the present invention, it is possible to reduce the radius of the rotating moving body including the winding shaft and to reduce the size of the entire apparatus.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated based on drawing. The shutter device according to the present embodiment is a shutter device for disaster prevention for forming a disaster prevention zone with the shutter curtain when fully closed, and when the fire occurs, the shutter curtain is between the elevator and the elevator hall. It is a disaster prevention shutter device for an elevator that is closed and moved. The elevator disaster prevention shutter device will be described below. FIG. 1 is a front view showing the whole elevator disaster shutter device, FIG. 2 is a sectional view taken along line S2-S2 of FIG. 1, and FIG. 3 is a longitudinal sectional view of the elevator disaster shutter device of FIG.

  First, the overall structure of the elevator will be described. As shown in FIGS. 2 and 3, the concrete wall 4, which is a building frame that divides the vertical hole 2 and the elevator hall 3 in the building in which the elevator lifting and lowering box 1 moves up and down, has a lower surface on the elevator hall. An opening 6 that is a floor 5 continuing from 3 is formed, and an elevator door 7 is disposed at the back of the vertical hole 2 in the opening 6 that is an elevator entrance. In order to open and close the elevator door 7 disposed at a position deviated from the thickness of the wall 4 to the vertical hole 2 side, as shown in FIG. It is provided above and below the door 7.

  Upper and lower rollers 10 and 11 attached to the upper bracket 7A of the elevator door 7 are movably engaged with the upper rail 8, and the lower rail 9 provided on the floor 5 is connected to the lower surface of the elevator door 7. The elevator door 7 is a suspension type that is slidably engaged with the engaging member 12 attached to the upper roller 10 and is suspended by the upper roller 10. Due to the guiding action, it is opened and closed by a driving force of a driving means (not shown).

  As shown in FIG. 1, the upper frame member 13 and the side frame member 14 are disposed on the upper inner surface of the opening 6 and the left and right side inner surfaces, thereby forming an upper inner member that forms the upper inner surface of the opening 6. The upper frame member 13 and the side frame member 14 which is the side inner surface member forming the side inner surface are provided with an outer frame 15 for the opening which is a three-sided frame on the inner surface of the opening 6. . The upper frame member 13 and the side frame member 14 are made of a metal plate such as stainless steel and serve as a decorative material for the opening 6.

  As shown in FIG. 3, the upper frame member 13 includes a rising portion 13A on the elevator hall 3 side and an extending portion 13B extending horizontally from the lower end of the rising portion 13A to the elevator door 7 side. The rising portion 13A is attached to a mounting member 16 provided on the surface of the falling wall 4A above the opening 6 in the wall 4 on the elevator hole 3 side, and the extending portion 13B is the surface of the falling wall 4A on the vertical hole 2 side. The holding member 19 is connected to the holding member 19 through the coupler 17 and the bracket 18. The upper rail 8 is attached to the holding member 19.

  Further, the attachment member 16 above the rising portion 13A of the upper frame member 13 is disposed in a ceiling space 21 that is partitioned from the elevator hall 3 by the ceiling member 20 in the vertical direction. As shown in FIG. 1, an elevator indicator 22 is disposed at the rising portion 13A.

  As shown in FIG. 1, the emergency shutter device for an elevator according to the present embodiment opens and closes the opening 6 between the elevator and the elevator hall 3 by moving up and down, in other words, by moving up and down. A shutter curtain 30 is provided. As shown in FIG. 2, both left and right end portions of the shutter curtain 30, in other words, both end portions in the shutter curtain width direction orthogonal to the opening / closing movement direction of the shutter curtain 30, are supported by the guide member while being prevented from being detached by the retaining member 30A. A guide rail 37 is slidably inserted. The pair of left and right guide rails 37 serving as guide members for guiding the opening and closing movement of the shutter curtain 30 is a surface of the side wall 4B provided on the left and right sides of the opening 6 in the wall 4 on the elevator hall 3 side. The decorative material 38 is arranged. These guide rails 37 are arranged on the side of the elevator hall 3 with respect to the outer frame 15 of the three-way frame, which is a decorative material for the opening 6 and includes the upper frame member 13 and the side frame member 14. ing.

  As shown in FIG. 3, the upper end of the shutter curtain 30 is coupled to a winding shaft 50 disposed horizontally in the ceiling space 21, and the shutter curtain 30 is wound by the winding shaft 50 that is rotatable. Taken and fed out. The vertical movement of the shutter curtain 30 performed by the winding and unwinding is performed by the shutter curtain 30 being inserted through the slit of the lintel 39 provided in the ceiling member 20. As shown in FIG. 1, the winding shaft 50 is supported by left and right first and second brackets 51 and 52, and these brackets 51 and 52 are attached to the attachment member 16 shown in FIG. .

  The shutter curtain 30 includes a curtain body 31 and a seat plate 32 provided at the end of the curtain body 31 on the closed side, that is, the lower end of the curtain body 31. The curtain body 31 is formed by a thin member having fire resistance and smoke shielding properties, and this thin member is obtained by, for example, applying and / or impregnating a fire resistant paint to silica cloth or glass cloth. 31 is a screen type. Further, the seat plate 32 is made of metal, and the seat plate 32 also has fireproof properties and smoke-proof properties.

  As shown in FIG. 1, a locked member 33 is attached to the side surface of the seat plate 32 on the elevator hall 3 side at the central position in the width direction of the shutter curtain 30. A stop hole 33A is formed. As shown in FIG. 3, the upper surface of the lintel 39 protruding from the ceiling space 21 at the position directly above the locked member 33 is a lock for locking the shutter curtain 30 in the fully open position. The device 34 is arranged, and this locking device 34 reaches the position where the seat plate 32 abuts against the lintel 39 when the shutter curtain 30 reaches the fully open position by winding the winding shaft 50. The locking member 35 is provided for maintaining the shutter curtain 30 in the fully open position by being inserted and locked into the locked hole 33A of the locked member 33. The normal locking member 35 swingable up and down is in a horizontal posture inserted and locked in the locked hole 33A by a stop mechanism provided inside the locking device 34. Thus, the shutter curtain 30 is maintained at the fully open position.

  A solenoid that operates in response to a signal from a sensor (not shown) that detects the occurrence of a fire is incorporated inside the locking device 34, and the shutter curtain 30 includes a seat plate 32 by releasing the stop mechanism by the operation of the solenoid. The locking member 35 moves downward while swinging downward due to its own weight, that is, the locking of the shutter curtain 30 by the locking device 34 is released, and the shutter curtain 30 fed from the take-up shaft 50 moves to the floor 5. When the fully closed position is reached by the arrival of the seat plate 32, a disaster prevention zone is formed by the shutter curtain 30. The stop mechanism can also be released by operating a manual operation member (not shown), and the shutter curtain 30 is also fully closed when a person who finds a fire operates the manual operation member.

  As shown in FIG. 1, the shutter curtain 30 that has been fully closed as described above can be lifted on the elevator-side surface of the shutter curtain 30 so that a person who has evacuated using the elevator can lift and pass under it. The handle members 40 and 41 are provided. The handle member 40 is a rod-shaped member inserted into the bag portion 42 formed in the overlapping portion of the upper and lower thin members 31A and 31B forming the curtain body 31, and the bag portion 42 has a break. The shutter curtain 30 can be lifted by placing a hand on a part of the handle member 40 exposed from the cut. Further, the handle member 41 is attached to the seat plate 32 below the handle member 40, and the seat plate 31 that has been raised to a height that is lifted by the handle member 40 can be lifted to a higher position by the handle member 41. It can be done.

  A return spring is disposed inside the take-up shaft 50 as will be described later. When the shutter curtain 30 is lowered by its own weight as described above and fed out from the take-up shaft 50, the return spring rotates. The spring force is accumulated by the take-up shaft 50. For this reason, the descent due to the dead weight of the shutter curtain 30 is decelerated by the amount of accumulated pressure of the return spring. As described above, since the person who has evacuated using the elevator lifts the shutter curtain 30 and passes under it, when the shutter curtain 30 is lifted and lifted by the handle members 40 and 41, that is, the shutter curtain 30 is wound. When the take-up shaft 50 is wound, the accumulated spring force of the return spring is used to rotate the take-up shaft 50 for winding the shutter curtain 30, and this spring force serves as an auxiliary force. Can be lifted.

  Note that when the shutter curtain 30 is raised to a high level by applying a large pushing force to the seat plate 32 of the shutter curtain 30 that has reached the fully closed position or has reached the halfway position to the fully closed position, the pushing force and the return spring are increased. The shutter curtain 30 reaches the fully open position by the accumulated spring force. Further, the locking member 35 of the locking device 34 has upper and lower bifurcated portions, and the upper portion of the bifurcated portion of the locking member 35 that is in the downward swinging posture is the shutter curtain 30. At the same time, the lower part of the bifurcated portion of the locking member 35 that is pushed up by the upper surface of the locked member 33 that has been raised and thus returned to the horizontal posture is inserted and locked into the hole 33 </ b> A of the locked member 33. At this time, since the stopper member 35 is returned to the original state at the same time as the locking member 35 returns to the horizontal position, the shutter curtain 30 is maintained in the fully open position, and the whole returns to the original state.

  Further, a smoke shielding member 43 is provided in the slit of the lintel 39 in FIG. 3 through which the shutter curtain 30 is inserted vertically, and this is caused by a fire when the shutter curtain 30 is fully closed. Smoke is prevented from passing through the slit of the lintel 39 and reaching the opposite side of the shutter curtain 30. In the present embodiment, such a smoke shielding member is not provided in the left and right guide rails 37 in which both end portions in the width direction of the shutter curtain are slidably inserted, but may be provided.

  FIG. 4 is a plan sectional view showing a shutter curtain opening / closing device including the winding shaft 50. A non-rotating body 60 is provided coaxially or substantially coaxially with the winding shaft 50 on the one end side in the axial direction of the winding shaft 50 that is the rotating body of the present embodiment, and the other end. The rotating body 61 is provided coaxially or substantially coaxially with the winding shaft 50 on the side of the section. The non-rotating body 60 arranged on the inner diameter side of the winding shaft 50 made of a hollow cylindrical member rotates when the winding shaft 50 rotates to wind up and feed out the shutter curtain 30 as described above. It is something that does not. Further, like the non-rotating body 60, the rotating body 61 arranged on the inner diameter side of the winding shaft 50 is integrated with the winding shaft 50, and the winding shaft is used for winding and unwinding the shutter curtain 30. When 50 rotates, it rotates with this winding shaft 50.

  The non-rotating body 60 has a boss member 62 inserted into the take-up shaft 50, one end connected to the boss member 62, and the other end exposed to the outside of the take-up shaft 50. The first shaft 63 is formed so as to include the first shaft 63, and the first shaft 63 is fitted into and coupled to the end of the winding shaft 50 on the side where the non-rotating body 60 is disposed. The hole is rotatably inserted into the hole. A driving member 65 is disposed inside the winding shaft 50 in the axial direction, and between the driving member 65 coupled to the winding shaft 50 and the boss member 62 or the first shaft 63 of the non-rotating body 60. Further, a return spring 66 by a coil spring is bridged and connected. Further, a connecting member 67 made of a hollow cylindrical member is bridged between the driving member 65 and the boss member 62 of the non-rotating body 60, and the shaft of the connecting member 67 serving as the connecting body in the present embodiment. One end portion in the direction is fitted and coupled to the small diameter portion 62A of the boss member 62, and the other end portion is fitted to the small diameter portion 65A of the drive member 65 so as to continuously extend in the circumferential direction. The drive member 65 and the boss member 62 of the non-rotating body 60 are connected by a connecting member 67 that houses a return spring 66 therein. Yes.

  The rotating body 61 includes two fixing members 68 and 69 arranged at an interval in the winding shaft 50 and a second shaft 70 coupled to the center of these fixing members 68 and 69. It is formed including. The fixing members 68 and 69 are coupled and fixed to the winding shaft 50, and the end of the second shaft 70 opposite to the fixing member 68 is exposed to the outside of the winding shaft 50.

  In the above, the axial length of the non-rotating body 60 is sufficiently shorter than the axial length of the winding shaft 50. Therefore, the axial length of the non-rotating body 60 is such that a portion that does not overlap with the winding shaft 50 is generated. A return spring 66 is disposed in an axial length portion where the non-rotating body 60 and the winding shaft 50 do not overlap, and this axial length portion is located between the first shaft 63 and the second shaft 70. That is, between the first shaft 63 and the drive member 65.

  The first shaft 63 of the non-rotating body 60 is inserted into a hole formed in the first bracket 51 which is the first support member in the present embodiment, and the first shaft 51 supports the first shaft 63. A bearing 71 is provided. Further, the second shaft 70 of the rotating body 61 is inserted into a hole formed in the second bracket 52 which is the second support member in the present embodiment, and the second shaft 52 is provided with the second shaft 70. A supporting bearing 72 is provided.

  As shown in FIG. 5, a first detent member 80 is removably attached to a side surface of the first bracket 51 opposite to the winding shaft 50 with a coupler 81 such as a screw. Further, as shown in FIG. 6 showing the first bracket 51, the first shaft 63, and the first detent member 80 being disassembled, a chamfered portion 63A is formed at the end of the first shaft 63, and the first detent The member 80 is formed with an engaging groove 80A that is engaged with the chamfered portion 63A to prevent the first shaft 63 from rotating with respect to the first bracket 51. For this reason, when the first detent member 80 is attached to the first bracket 51 with the coupler 81, the first shaft 63 can be detented with respect to the first bracket 51.

  On the other hand, as shown in FIG. 7, a holder member 82 manufactured by pressing a sheet metal or the like is coupled to the side surface of the second bracket 52 opposite to the winding shaft 50. A second detent member 83 shown in FIG. 8 showing the second bracket 52 and the second shaft 70 when disassembled can be inserted between the second bracket 52 and the holder member 82 from above. A rotation preventing member insertion space 84 is formed, and an end portion of the second shaft 70 is inserted into the hole formed in the second bracket 52 and the hole 82A formed in the holder member 82. However, a chamfered portion 70B is formed in a portion of the second shaft 70 corresponding to the second anti-rotation member insertion space 84 and in front of the small diameter portion 70A. The second anti-rotation member 83 is formed with an engaging groove 83A that engages with the chamfered portions 70B when the anti-rotation member 83 is inserted into the second anti-rotation member insertion space 84.

  For this reason, when the work for inserting and setting the second detent member 83 into the second detent member insertion space 84 is performed, the second shaft 70 and the take-up shaft 50 are rotated with respect to the second bracket 52. Can be stopped.

  In the present embodiment, the non-rotating body 60, the return spring 66, the driving member 65, and the connecting member 67 shown in FIG. 4 are pre-assembled units before being inserted into the winding shaft 50. It is what constitutes. That is, before the work of supporting the first shaft 63 and the second shaft 70 by the first bracket 51 and the second bracket 52 provided with the bearings 71 and 72, specifically, the disaster prevention shutter device for an elevator is installed. In a manufacturing factory, an operation of connecting one end of the return spring 66 to the boss member 62 or the first shaft 63 of the non-rotating body 60, an operation of connecting the other end of the return spring 66 to the drive member 65, and a boss The member 62 and the drive member 65 are connected by a connecting member 67, and the return spring 66 is housed inside the connecting member 67 which is a hollow cylindrical member.

  Further, in the construction site of the factory or the elevator disaster prevention shutter device, the drive member 65 that is a part of the unit is inserted into the take-up shaft 50, and the drive member 65 is arranged in the axial direction of the take-up shaft 50. In the predetermined position, an operation of coupling to the take-up shaft 50 by means of a screw or the like screwed from the outside of the take-up shaft 50, an operation of inserting the first shaft 63 into the center hole of the bearing member 64, An operation of coupling the bearing member 64 to the take-up shaft 50 is performed by a fitting tool such as a screw fitted into the end opening of the take-up shaft 50 and screwed from the outside of the take-up shaft 50.

  Thereafter, before the first bracket 51 and the second bracket 52 are attached to the attachment member 16 at the construction site of the elevator disaster prevention shutter device, the bearings 71 and 72 attached to the brackets 51 and 52 are installed. An operation of inserting and supporting the first shaft 63 and the second shaft 70 in the first bracket 51 and the second bracket 52 is performed via the first bracket 51 and the second bracket 52. It can be attached with bolts and nuts.

  Next, when the first detent member 80 is attached to the first bracket 51, the first detent member 80 is removed, whereby the boss member 62 and the first shaft 63 of the non-rotating body 60 are removed from the first bracket 51. 51 and the second bracket 52 are rotatable. Further, when the second anti-rotation member 83 is inserted in the second anti-rotation member insertion space 84 of the second bracket 52, the second anti-rotation member 83 is removed, thereby the second shaft 70 and the winding shaft. 50 is rotatable with respect to the first bracket 51 and the second bracket 52.

  Thereafter, the upper end of the shutter curtain 30 is coupled to the winding shaft 50, or the winding shaft 50 is manually rotated to wind the shutter curtain 30 onto the winding shaft 50, so that the shutter curtain 30 is fully opened. Work to raise to position. And the operation | work which inserts and sets the 2nd anti-rotation member 83 in the 2nd anti-rotation member insertion space 84 of the 2nd bracket 52 is performed, Thereby, the 2nd axis | shaft 70 and the winding axis | shaft 50 are made into the 1st bracket 51 and 2nd The rotation is prevented with respect to the bracket 52.

  Next, at the end of the first shaft 63 that protrudes from the hole 51A of the first bracket 51 shown in FIG. 6, the engaging portion that engages with the chamfered portion 63A formed at this end. A manually operated rotating member 85 having 85A is fitted, and the rotating member 85 performs an operation of rotating the first shaft 63 with respect to the winding shaft 50. By this rotation operation, one end is connected to the boss member 62 or the first shaft 63 of the non-rotating body 60, and the other end is connected to the drive member 65 connected to the take-up shaft 50. The initial value of the spring force when the shutter curtain 30 is fully opened is accumulated in the return spring 66 by this entrainment. After the pressure accumulation operation is completed, an operation of attaching the first detent member 80 to the first bracket 51 and an operation of removing the second detent member 83 from the second detent member insertion space 84 of the second bracket 52 are performed. .

  As a result, the first shaft 63 cannot rotate with respect to the first bracket 51 and the second bracket 52, and the second shaft 70 and the winding shaft 50 can rotate with respect to the first bracket 51 and the second bracket 52. It becomes.

  As described above, when the shutter curtain 30 is unwound from the winding shaft 50 while rotating the winding shaft 50 by its own weight due to the occurrence of a fire, the driving member 65 that rotates integrally with the winding shaft 50 A return spring 66 spanned between the drive member 65 and the boss member 62 or the first shaft 63 of the non-rotating body 60 that does not rotate with respect to the take-up shaft 50 is wound. Spring force is accumulated. When the shutter curtain 30 is raised as described above, the winding shaft 50 for winding the shutter curtain 30 is rotated while the spring force accumulated in the return spring 66 is used.

  Further, when the accumulated pressure of the spring force of the return spring 66 when the shutter curtain 30 reaches the fully open position, in other words, the accumulated pressure of the initial spring force of the return spring 66 when the shutter curtain 30 starts to be fed is changed. After the shutter curtain 30 is fully opened, the first detent member 80 is removed from the first bracket 51 and the second detent member 83 is inserted into the second detent member insertion space 84 of the second bracket 52. set. Thereafter, the rotating member 85 of FIG. 6 is fitted to the end portion of the first shaft 63, and the rotating member 58 is rotated to change the amount of the return spring 66 to be wound. Next, when the first detent member 80 is attached to the first bracket 51 and the second detent member 83 is removed from the second detent member insertion space 84 of the second bracket 52, the shutter curtain 30 is moved. The accumulated pressure of the initial spring force of the return spring 66 when the closing movement is started is changed.

  According to the present embodiment described above, the axial length of the non-rotating body 60 that does not rotate when the take-up shaft 50 is rotated when the shutter curtain 30 is taken up and fed out is sufficiently shorter than the take-up shaft 50. The return spring 66 can be arranged in the axial length portion where the non-rotating body 60 and the winding shaft 50 do not overlap. Thereby, it is not necessary to arrange the return spring 66 on the outer periphery of the non-rotating body 60, specifically, the return spring 66 on the outer periphery of the first shaft 63 constituting the non-rotating body 60. The diameter of the return spring 66 can be made smaller than the diameter of the first shaft 63. For this reason, it is possible to reduce the radius of the take-up shaft 50 that is a member arranged on the outer diameter side of the non-rotating body 60, thereby reducing the size of the entire shutter curtain opening / closing device. This is effective as a shutter curtain opening / closing device of an elevator disaster prevention shutter device arranged in the ceiling space 21 having a limited space.

  Further, the non-rotating body 60 and the driving member 65 to which the return spring 66 is bridged and connected are connected by a connecting member 67, and these non-rotating body 60 and the driving member 65 are inserted into the winding shaft 50. Since the non-rotating body 60, the return spring 66, the drive member 65, and the connecting member 67 constitute a pre-assembled unit before the drive member 65 is coupled to the winding shaft 50, this The unit can be handled as a single structure. For this reason, when performing operations such as assembling the non-rotating body 60, the return spring 66, the driving member 65, and the connecting member 67 to the winding shaft 50, these can be easily handled as a single structure, The assembly work to the winding shaft 50 can be easily performed.

  Further, since the connecting member 67 is a hollow cylindrical member and the return spring 66 is housed therein, the return spring 66 is covered with the connecting member 67. The return spring 66 can be protected by the connecting member 67 when the unit as the structure is assembled to the winding shaft 50 or the like.

  Further, the take-up shaft 50 which is the rotating body of the present embodiment is a hollow cylindrical member, and the return spring 66 is housed and disposed inside the cylindrical member. Is also disposed inside the connecting member 67, which is a cylindrical member, and the return spring 66 can be effectively protected from an external force when the shutter curtain 30 is opened and closed.

  Further, according to the present embodiment, the non-rotating body 60 has the first shaft 63, and the first shaft 63 is supported by the first bracket 51, and the first shaft 51 is provided with the first shaft 63. A first anti-rotation member 80 for preventing rotation is disposed so as to be removable, and is disposed at an end of the winding shaft 50 opposite to the first shaft 63, and is coupled to the winding shaft 50. The shaft 70 is rotatably supported by the second bracket 52, and the second bracket 52 can be provided with a second anti-rotation member 83 for preventing the second shaft 70 from rotating. The first detent member 80 is removed from the first bracket 51 so that the first shaft 63 is rotatable with respect to the first bracket 51, and the second detent member 83 is disposed on the second bracket 52. The second shaft 70 and the take-up shaft 50 are connected to the second bracket. After stopping rotation with respect to 2, by rotating the first shaft 63, it is possible to adjust the accumulated pressure of the initial spring force of the return spring 66.

  Further, the adjustment operation of the accumulated pressure can be performed in a state where the winding shaft 50 or the like is bridged between the first and second brackets 51 and 52, and the winding shaft 50 or the like is removed from the first and second brackets 51 and 52. Since it is not necessary, the pressure accumulating pressure can be adjusted easily, and even if the upper end of the shutter curtain 30 is coupled to the take-up shaft 50 and the shutter curtain 30 is taken up by the take-up shaft 50, the shutter curtain 30 The accumulated pressure can be adjusted without fouling.

  Further, according to the present embodiment, the first rotation preventing member 80 is removed from the first bracket 51 so that the first shaft 63 is rotatable with respect to the first bracket 51, and the second rotation to the second bracket 52 is performed. Since the stop member 83 is disposed and the second shaft 70 and the take-up shaft 50 are prevented from rotating with respect to the second bracket 52, a rotating member 85 that can rotate the first shaft 63 is prepared. The accumulated pressure adjustment work of the spring force of the return spring 66 performed by rotating the first shaft 63 can be easily performed.

  The present invention relates to a shutter device provided with a return spring in which a spring force is accumulated when the shutter curtain is closed and moved about a rotating moving body for opening and closing the shutter curtain, and the accumulated spring force is used when the shutter curtain is opened and moved. It can be used for shutter curtain opening and closing devices.

It is a front view showing the whole disaster prevention shutter device for elevators which is a shutter device concerning one embodiment of the present invention. It is the S2-S2 sectional view taken on the line of FIG. It is a longitudinal cross-sectional view of the disaster prevention shutter device for elevators of FIG. It is a plane sectional view showing a shutter curtain opening and closing device including a winding shaft which is a rotary moving body. A first bracket which is a first support member, an end portion of a first shaft of a non-rotating body supported by the first bracket, and a first detent for preventing the first shaft from rotating with respect to the first bracket It is a perspective view which shows a member. It is a perspective view which shows the time of a decomposition | disassembly of a 1st bracket, a 1st axis | shaft, and a 1st rotation prevention member. The second bracket as the second support member, the end of the second shaft of the rotating body supported by the second bracket, and the second detent member for preventing the second shaft from rotating with respect to the second bracket It is a perspective view which shows the insertion space for inserting. It is a perspective view which shows the time of decomposition | disassembly of a 2nd bracket, a 2nd axis | shaft, and a 2nd rotation prevention member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 30 Shutter curtain 31 Curtain main body 32 Seat plate 50 The winding shaft which is a rotating body 51 The 1st bracket which is a 1st supporting member 52 The 2nd bracket which is a 2nd supporting member 60 The non-rotating body 61 The rotating body 63 The 1st axis | shaft 65 Drive Member 66 Return spring 67 Connecting member 70 as a connecting body 70 Second shaft 80 First detent member 83 Second detent member 85 Rotating member

Claims (9)

  An openable / closable shutter curtain, a rotating moving body that rotates for opening / closing movement of the shutter curtain, an inner diameter side of the rotating moving body, and coaxially or substantially coaxially arranged with the rotating moving body, at least the rotating moving body being A non-rotating body that does not rotate when rotating, and a spanning connection between the rotating moving body and the non-rotating body, and a spring force is accumulated when the rotating moving body is rotated to close and move the shutter curtain. A shutter curtain opening and closing device of a shutter device having a return spring used for rotation of the rotating moving body when the accumulated spring force opens and moves the shutter curtain, wherein the axial length of the non-rotating body is the rotating moving body It has a length that does not overlap with the non-rotating body and the rotating body does not overlap The shutter curtain opening and closing device of the shutter device, characterized in that the return spring in the direction lengths are arranged.   2. The shutter curtain opening and closing device of the shutter device according to claim 1, wherein the rotary moving body is formed to include a hollow cylindrical member, and the return spring is accommodated in the cylindrical member. Device shutter curtain opening and closing device.   3. The shutter curtain opening / closing device of the shutter device according to claim 1, wherein one end of the return spring is connected to the non-rotating body and the other end is connected to a driving member coupled to the rotating moving body. The drive member and the non-rotating body are connected by a connecting body, and the return spring, the non-rotating body, the driving member, and the connecting body are assembled in advance before the driving member is coupled to the rotating moving body. A shutter curtain opening and closing device of a shutter device, characterized in that it constitutes a unit.   The shutter curtain opening / closing device of the shutter device according to claim 3, wherein the connecting body is formed to include a hollow cylindrical member, and the return spring is accommodated in the cylindrical member. Shutter curtain opening / closing device for shutter device.   The shutter curtain opening and closing device of the shutter device according to any one of claims 1 to 4, wherein the non-rotating body has a first shaft arranged on one end side in the axial direction of the rotating moving body, On the other end side in the axial direction of the rotating body, a second shaft that is coupled to the rotating body and rotates integrally with the rotating body is disposed, and the return spring includes the first shaft and the second shaft. A shutter curtain opening / closing device for a shutter device, wherein the shutter curtain opening / closing device is disposed between the shaft and the shaft.   6. The shutter curtain opening / closing device of the shutter device according to claim 5, wherein the first shaft is supported by a first support member, and the first support member includes a first rotation preventing member that prevents the first shaft from rotating. The second shaft is rotatably supported by a second support member, and the second support member is provided with a second anti-rotation member for preventing the rotation of the second shaft. A shutter curtain opening and closing device for a shutter device, characterized in that it is possible.   7. The shutter curtain opening / closing device of the shutter device according to claim 6, further comprising a rotating member for rotating the first shaft, wherein the rotating member has the first detent member removed from the first support member. And a shutter curtain opening / closing device of the shutter device, which is used when the second detent member is disposed on the second support member.   The shutter curtain opening and closing device of the shutter device according to any one of claims 1 to 7, wherein the rotating body is a winding shaft that winds and feeds the shutter curtain, and the shutter is wound by winding and feeding the winding shaft. A shutter curtain opening / closing device for a shutter device, wherein the curtain is opened and closed.   The shutter curtain opening / closing device of the shutter device according to any one of claims 1 to 8, wherein the fully closed shutter curtain forms a disaster prevention zone.

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