JPH1046937A - Chain tip guide device of panel shutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the loosening of a free end side of a chain which is extended from a sprocket for driving panel in the direction of panel storage by mooring the free end of the chain in the direction of panel travel along a storage rail in such a manner that it can travel freely. SOLUTION: A chain tip guide bar 6 is attached in the inside of a bracket 5a of a storage box 5 and is arranged in parallel above a storage rail 4. A free end 3a of a panel linkage chain 3 which meshes with a sprocket for driving panel 8 and is extended in the direction of panel storage is moored to the bar 6 in such a manner that it can travel freely. When a panel 2 rises and lowers, the free end 3a travels along the bar 6, and the length from a chain support pin of the panel 2 which travels first on the rail 4 when the panel is stored to the free end 3a is reduced. Consequently, the free end side of the chain 3 is not loosened when the panel is stored, it is possible to prevent the twining around of the chain 3. Moreover, since the free end 3a is moored to the bar 6, it is possible to prevent the coming off of the chain 3 from the sprocket 8 when the panel is reeled out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain guiding device for a panel shutter for connecting a plurality of panels constituting a shutter curtain in series to prevent a panel connecting chain engaged with a panel driving sprocket from coming off. It is.

[0002]

2. Description of the Related Art A conventional panel shutter includes a pair of left and right guide rails arranged upright on both sides of a shutter opening / closing opening, and a storage box arranged above these guide rails. A plurality of upper and lower panels for vertically opening and closing are connected in series by roller chains on both sides thereof, and the roller chains are meshed with a panel driving sprocket in the storage box, and the forward / reverse rotation of the panel driving sprocket is performed. By the feed operation of the panel linking chain by driving, the panel, vertical movement in a series posture along the guide rail,
It is adapted to be transferred to a horizontal movement along a storage rail in the storage box.

Here, if the free end of the roller chain, which meshes with the panel driving sprocket and extends in the panel storage direction, is left in a free state, the roller chain becomes entangled when the panel is moved up and down. Not only does this hinder the lifting / lowering operation of the panel, but in particular, when the panel is extended, the free end of the roller chain is drawn to the panel driving sprocket side, disengages from the panel driving sprocket, and the entire panel falls. It leads to an unexpected situation.

Accordingly, the free end of the roller chain needs to be moored in the storage box. In this case, the roller chain is moved so that the moving distance in the panel side-by-side posture corresponding to the entire length of the storage rail is secured. It is important to moor the free end of the.

Therefore, conventionally, the free end of the roller chain has been moored and fixed to the end of the depth in the storage box so as to secure a moving distance in the panel side-by-side posture corresponding to the entire length of the storage rail.

[0006]

The conventional panel shutter is constructed as described above, and the free end of the roller chain is stored in the storage box so that the moving distance in the panel parallel posture corresponding to the entire length of the storage rail is secured. The length of the roller chain that extends from the panel that first moves on the storage rail to the depth end of the storage box when the panel is stored is increased because the roller chain is moored and fixed to the depth end side of the storage box. There was a point. In addition, when the length of the roller chain is increased, when the panel is stored, the roller moves first on the storage rail and enters the inner part of the storage box between the panel and the depth end of the storage box. There has been a problem in that the chain is greatly loosened, which causes the roller chain to be entangled during the panel elevating operation, thereby hindering the elevating operation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When a panel is stored, the distance from a panel which first moves on a storage rail to a free end of a panel connecting chain (roller chain) is stored. It is an object of the present invention to provide a panel shutter chain tip guide device which can reduce the length of the panel linking chain so that the free end side of the panel linking chain is hardly loosened, and has no risk of the panel linking chain coming off from the panel driving sprocket. Aim.

[0008]

According to a first aspect of the present invention, there is provided a panel shutter guiding device for a chain end of a panel, comprising a pair of left and right guide rails disposed on both sides of a shutter opening / closing opening and a vertical opening / closing between the guide rails. A plurality of upper and lower panels, a hanging roller pivotally supported on both left and right sides of the panel, a panel linking chain connecting the panels in series on both left and right sides, and an upper part of the guide rail. A left and right bracket arranged to form a panel storage portion, a panel driving sprocket rotatably supported above the guide rail of the bracket and meshing with the panel linking chain; and The panels are arranged side by side so that the hanging roller of the panel, which has passed the driving sprocket in the panel storage direction, can roll freely. In a panel shutter having a storage rail for hanging and storing, a free end of the panel linking chain extending from the panel driving sprocket to the panel storage direction side is moved inside the bracket in a panel moving direction along the storage rail. It is always moored freely.

According to a second aspect of the present invention, there is provided a chain leading end guide device for a panel shutter, comprising a pair of left and right guide rails disposed on both sides of a shutter opening / closing opening, and a plurality of upper and lower panels for vertically opening and closing between the guide rails. A hanging roller pivotally supported on both left and right sides of the panel, a panel linking chain connecting the panels in series on both the left and right sides, and a panel storage section formed on the upper part of the guide rail. Left and right brackets, a panel driving sprocket rotatably supported above the guide rails of the brackets and meshing with the panel linking chain, and the panel driving sprocket provided on the bracket and accommodating the panel driving sprocket. A roller for supporting the hanging rollers of the panel passing in the direction side so as to freely roll and suspending and storing the panels in a parallel state. A panel guide provided with a rail, wherein a chain leading guide bar is disposed above the storage rail, and the free end of the panel linking chain extends from the panel driving sprocket toward the panel storage direction with respect to the chain leading guide bar. The parts are loosely fitted so as to be movable.

According to a third aspect of the present invention, there is provided a panel shutter chain tip guiding device, wherein the chain tip guiding rod according to the second aspect is disposed above a space between the panel and the bracket suspended by the storage rail. It was done.

According to a fourth aspect of the present invention, there is provided a panel shutter chain leading end guiding device disposed above a space between the panel suspended by the storage rail and the blanket.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below. FIG. 1 is a longitudinal sectional view showing a storage box portion of a panel shutter according to an embodiment of the present invention, and FIG. 2 is a schematic perspective view of a panel drive system of FIG. In the drawing, reference numeral 1 denotes a pair of left and right guide rails, and these guide rails 1 are composed of vertical guide rails arranged upright on both sides of a so-called shutter opening / closing opening such as a doorway of a building or a window. Reference numeral 2 denotes a plurality of upper and lower panels for vertically opening and closing between the two guide rails 1. These panels 2 are provided with an appropriate panel face plate 2b on a rectangular frame 2a as shown in FIGS. Configuration.
As shown in FIGS. 3 and 4, pins (supporting shafts) 21 projecting outward from both end surfaces of the panel 2 are provided on both upper sides of the panel 2. It is rotatably inserted and connected to the connecting chain 3 via a sleeve-shaped attachment 24 so as to be movable in the thrust direction.

More specifically, as shown in FIGS. 3 and 4, pin brackets 26 are provided on both side end surfaces of the upper portion of the panel 2, and the pins 21 are inserted into the pin brackets 26 so as to be movable in the thrust direction. The pin 21 is fixed by a screw 27 at a movement adjustment position in the thrust direction.

In this manner, the plurality of panels 2 that move up and down between the two guide rails 1 are opened and closed by the respective pins 21.
Through the panel connecting chain 3 outside the both side end faces of each panel 2.

On the pins 21 of each panel 2, a hanging roller 25 located further outside the panel linking chain 3 is rotatably mounted. A panel roller 22 is rotatably supported on both lower sides of each panel 2.

A storage box 5 is disposed above the guide rail 1 and has a vertical bracket 5a on both left and right sides, and is located above the two guide rails 1 inside the bracket 5a. A pair of left and right panel driving sprockets 8 are pivotally supported, and these panel driving sprockets 8 are connected to the panel linking chain 3.
Is engaged.

A storage rail 4 is disposed inside the bracket 5a. The storage rail 4 is located above the horizontal line passing through the axis of the panel driving sprocket 8 between the bracket 5a and the panel driving sprocket 8. In the illustrated example, the panel storage direction side is gradually and gradually lowered and inclined, and the hanging roller of the panel 2 that has passed the panel driving sprocket 8 in the panel storage direction side. 25 is rotatably supported.

Therefore, the front end side of the storage rail 4 intervenes between the bracket 5a and the panel driving sprocket 8, and overlaps with a cylindrical area having a cross section of the rotation circular locus of the panel driving sprocket 8. ing. The storage rail 4 has a mounting surface for the bracket 5a and a rolling surface of the suspension roller 25, and a space is formed below the rolling surface. In the outer peripheral area around the axis of the panel driving sprocket 8 which is separated from the rotating shaft 20 and corresponds to the movement trajectory of the suspension roller 25 according to the chain feed direction of the panel driving sprocket 8, The upper end of 1 and the front end of the storage rail 4 are separated from each other to form a space area without a rail.

Further, the lower end of the storage rail 4 that is inclined as described above is interrupted at a front position that is separated from the depth end in the storage box 5 by a distance corresponding to the installation space of the switchgear 13. A stopper 4a (FIG. 1) for preventing the suspension roller 25 that has rolled on the storage rail 4 from falling off is provided at the lower end of the storage rail 4.
Reference).

In the above, the series of panels 2 are moved vertically along the guide rails 1 by the feed operation of the panel linking chain 3 by forward and reverse rotation of the panel driving sprockets 8 and along the storage rails 4. It is to be transferred to the horizontal movement of the parallel posture. In the parallel posture of the panels 2, the panel linking chain 3 between the panels 2 hangs inside the storage rail 4.

In such a panel shutter, the side near the upper end of the guide rail 1 extending into the storage box 5 is located near the lower part of the panel driving sprocket 8 and the abnormal refraction of the panel linking chain 3 ( A chain slack sensing device 7 for electrically sensing (slack) is provided.

In the vicinity of the panel driving sprocket 8 in the storage box 5, a chain for contacting and guiding the panel linking chain 3 to the panel driving sprocket 8 in an appropriate meshing direction or a mesh releasing direction during the movement of the panel 2. Guide members 9 and 10 are arranged.

In these chain guide members 9 and 10, the storage rail 4 is located near the panel driving sprocket 8.
The panel storage side chain guide member 9 disposed on the side protrudes from the inside of the bracket 5a of the storage box 5 and wraps around the side of the panel driving sprocket 8 to form an upper edge 9b.
And a side edge 9a.

More specifically, the upper edge 9b of the panel storage-side chain guide member 9 includes an inner member 9c located inside the addendum circle of the panel driving sprocket 8, and an outer end of the addendum circle and the storage box. And an outer member 9d located in the movement path of the panel linking chain 3 that enters and exits the inside of the panel connecting chain 3.

Further, the side edge 9a of the panel storage side chain guide member 9 extends downward in a state in which the storage rail 4 side of the panel driving sprocket 8 is spaced apart from and faces the tooth tip of the panel driving sprocket 8. The hanging portion of the panel linking chain 3 is prevented from being entangled with and engaged with the panel driving sprocket 8.

The panel storage side chain guide member 9
Are formed so as to be in contact with the panel connecting chain 3 so that the panel connecting chain 3 can be brought into contact with the panel driving sprocket 8 in the meshing direction, the mesh releasing direction, and the guide rail 1 direction.

On the other hand, the panel entrance / exit side chain guide member 10 disposed on the guide rail 1 side near the upper end side of the guide rail 1 includes an inner member 10a located inside the addendum circle of the panel driving sprocket 8. An outer member 10b located outside the addendum circle and in the movement path of the panel linking chain 3, and contacts the panel linking chain 3 to disengage the panel linking chain 3 in the meshing direction and the meshing direction. It is formed so as to be able to contact and guide in the direction and the guide rail 1 direction.

In the above description, at least one of the panel storage side chain guide member 9 and the panel entrance / exit side chain guide member 10 constitutes a chain / sprocket guide device.

In the vicinity of the panel entrance of the storage box 5,
A panel guide 11 is provided for smoothly guiding a panel roller 22 below each panel 2 in a panel storage direction and a panel extension direction.

A switchgear 13 is arranged in a depth space in the storage box 5. Here, storage box 5
, The lower end of the storage rail 4 is interrupted at a position away from the depth end of the storage box 5 by a distance corresponding to the installation space of the switchgear 13, so that the storage box in which the storage rail 4 does not extend The switchgear 13 is arranged by utilizing the depth space area in 5.

As shown in FIG. 1, the switchgear 13 has an integral mounting base 13a, and has vertically long mounting holes 13b at both upper and lower sides of the mounting base 13a.

In the back space area inside the storage box 5, the switch 13 is attached to the bracket 5a on one side thereof.
At the time of the mounting, a bolt 28 is inserted into the long hole 13b of the mounting base 13a of the switchgear 13, and a nut 29 is screwed into the bolt 28 to tighten the mounting base 13a to the bracket 5a. It is fixed. Therefore, if the nut 29 is loosened, the slot 1
The mounting position of the switchgear 13 can be adjusted vertically by an amount corresponding to the length of 3b.

The switchgear 13 has an output sprocket 130 as shown in FIG. 1, and an interlocking sprocket 14 is linked to the output sprocket 130 via an interlocking chain 15.

The interlocking sprocket 14 has a first transmission sprocket 17 coaxially, and is rotatably attached to the bracket 5a via a bearing 30. Here, the bearing body 30 is, as shown in FIG.
Is fitted and mounted so as to be position-adjustable with respect to the notch 5b provided at the bottom. Therefore, the space between the driving side rotating shaft 16 connecting the interlocking sprocket 14 and the first transmission sprocket 17 with the panel driving sprocket 8 can be adjusted.

Both ends of the driving-side rotating shaft 16 project outside the left and right brackets 5a via bearings 30, and a first transmission sprocket 17 is fitted to the outside projecting end.

On the other hand, as described above, the driven-side rotating shaft (sprocket shaft) of the panel driving sprocket 8, which is supported at a position above the guide rail 1 in the left and right brackets 5a.
As shown in FIG. 2, as shown in FIG. 2, the projection 20 projects outside the left and right brackets 5 a via the bearing 30, and the second transmission sprocket 18 is fitted to the outside projection end.

The endless transmission chain 1 is attached to the first transmission sprocket 17 and the second transmission sprocket 18.
As a result, the rotation output of the switch 13 is transmitted to the left and right panel driving sprockets 8, and the panel driving sprocket 8 is driven to rotate.

Accordingly, the panel driving sprocket 8 and the interlocking sprocket 14 are arranged inside the bracket 5a, and the first transmission sprocket 17, the second transmission sprocket 18 and the transmission chain 19 are arranged outside the bracket 5a.

In the above, the side piece 5c is formed on one side of the bracket 5a (the left side in FIGS. 1 and 2) along the guide rail 1 so as to be parallel to the guide rail 1. It can be a bracket mounting support for mounting and fixing to a building or the like.

As described above, the side piece 5c of the bracket 5a
Is used as the bracket mounting support 5c, the driven-side rotary shaft 20 that supports the panel weight, which is a dynamic load when the panel is raised and lowered, can be arranged at a position closest to the bracket mounting support 5c. Accordingly, the storage rail 4 that supports the panel load, which is a static load in the panel storage state, can be disposed at a position farther from the bracket mounting support portion 5c than the driven-side rotary shaft 20.

As described above, the driven-side rotary shaft 20 for supporting the dynamic load when the panel is raised and lowered is arranged at the position closest to the bracket mounting support portion 5c, and the storage rail 4 for supporting the static load when the panel is stored is mounted on the bracket. By arranging the storage box 5 at a position farther than the support portion 5c, the strength of the entire storage box 5 including the bracket 5a is advantageous.

In the storage box 5, the guide rail 1 is a panel elevating unit, the storage rail 4 is a panel storage unit, and a system of the switch 13 and the driving side rotating shaft 16 is a driving mechanism. The panel elevating unit and the panel storage unit are arranged in a space sandwiched between the unit and the bracket mounting support 5c.

The drive mechanism (storage box 5)
In the back space region of the figure), the driving side rotating shaft 16 and the interlocking sprocket 14 are located above the opening / closing device 13, and the opening / closing unit 13 and the driving side rotation shaft 16 and the interlocking sprocket 14 are accommodated in the storage space. It is arranged in a direction substantially parallel to the panel 2 at the storage position suspended by the rail 4.

With this arrangement, the storage box 5
The power transmission sprockets (the interlocking sprocket 14 and the first
The installation space for the transmission sprocket 17) can be minimized. Therefore, the installation space does not need to be particularly large, and the switchgear 13 can be stored in the storage box 5.
The installation space for the storage box 5 is reduced as compared with the case where the storage box 5 is externally mounted, and the restrictions on the installation work can be greatly eased.

A chain tip guiding device 6 is arranged at a position above the storage rail 4 in the storage box 5 and is separated from the bracket 5a.
And a chain tip guide bar 6 which is attached to the inside of the inside and is parallel to the storage rail 4. The chain tip guide rod 6 is disposed by effectively utilizing an upper space between both end surfaces of the panel 2 suspended by the storage rail 4 and the bracket 5a.

A free end portion (end side link portion) 3a of the panel linking chain 3 which meshes with the panel driving sprocket 8 and extends in the panel storage direction is movably moored to the chain tip guide rod 6. .

As a result, the free end 3a of the panel linking chain 3 moves along the chain tip guide rod 6 when the panel 2 is moved up and down, so that the free end 3a first moves onto the storage rail 4 during the panel storing operation. Pin 2 of panel 2
The length from 1 to the free end 3a of the panel connecting chain 3 can be reduced.

Therefore, the free end side of the panel linking chain 3 is not greatly loosened particularly when the panel is stored, and it is possible to reliably prevent the panel linking chain 3 from being entangled during the panel elevating operation.

Further, since the free end portion 3a of the panel connecting chain 3 is always moored to the chain leading guide bar 6 as described above, the panel connecting chain 3 is extended when the panel is extended.
Does not come off from the panel driving sprocket 8 and safety and reliability are greatly improved.

Further, as described above, the chain tip guide rod 6 disposed above the storage rail 4 is connected to the panel linking chain 3 that connects the panels 2 in the parallel posture suspended by the storage rail 4 to the U-shape. Since it does not become an obstacle when bending and hanging in the shape of a letter, there is no need to provide extra space for arranging the chain tip guide bar 6 in the storage box 5, and therefore a compact receiving structure can be achieved.

Next, the operation will be described. When the switch 13 is activated in the shutter opening direction, the rotational driving force is
Interlocking sprocket 14 from output sprocket 130 via interlocking chain 15 → first transmission sprocket 17 →
The power is transmitted from the transmission chain 19 to the second transmission sprocket 18 to the panel driving sprocket 8, whereby the panel driving sprocket 8 is rotated clockwise in FIG.

Thus, the panel driving sprocket 8
The panel 2 between the guide rails 1 is pulled up via the panel linking chain 3 meshed with. When the upper end of the panel 2 reaches the panel driving sprocket 8 by the lifting, the upper end of the panel 2 moves circularly along the pitch circumference of the panel driving sprocket 8 together with the panel linking chain 3, and moves in the direction of the storage rail 4. It is guided to move.

At this time, the panel roller 2 below the panel 2
2 is guided obliquely upward by the inclined guide portion 11a of the panel guide 11 and advances in the storage box 5 in the depth direction (panel storage direction).

In this manner, the upper end of the panel 2 that has moved up between the two guide rails 1 moves along the tip of the panel driving sprocket 8 toward the storage rail 4 (panel storage direction). When the panel roller 22 is guided obliquely upward by the panel guide 11,
When the panel 2 passes through the panel driving sprocket 8 toward the panel storage direction, the panel 2 moves while maintaining the vertical posture in the state in which the lateral shake is prevented.

After the panel 2 has passed the panel driving sprocket 8 in the panel storage direction, the suspension rollers 25 on both upper sides of the panel 2 move onto the storage rail 4. At this time, the suspension roller 25 rolls on the storage rail 4 by its inclination, so that the panel 2 is automatically suspended inside the storage box 5 by the downward inclination along the storage rail 4 in the suspended state of the parallel posture. Go to

When the suspension roller 25 of the panel 2 which has first moved onto the storage rail 4 reaches the inclined lower end of the storage rail 4, the suspension roller 25 is moved to the lower end of the storage rail 4. Abuts against the stopper 4a provided in the storage rail 4 to prevent the storage rail 4 from falling off.

As described above, after the first panel 2 arrives at the lower end of the storage rail 4, the subsequent panels 2 are sequentially fed, so that the panels 2 sequentially shifted to the storage rail 4 are adjacent to each other. It is suspended and stored in a parallel hanging state.

In the above, the panel 2 is the guide rail 1
When the panel drive sprocket 8 is connected to the panel connecting chain 3 first when the panel is spliced from the vertical movement in the serial posture along the storage rail 4 to the horizontal movement in the parallel posture along the storage rail 4, the meshing is performed. Since the panel entrance / exit chain guide member 10 extending in the direction guide is disposed, the inner member located inside the tooth tip circle of the panel driving sprocket 8 which the panel entrance / exit chain guide member 10 has. The panel linking chain 3 is reliably guided in a predetermined direction with respect to the panel driving sprocket 8 by the outer member 10b located outside the addendum circle and in the movement path of the panel linking chain 3.

Even if the panel linking chain 3 and the panel driving sprocket 8 are abnormally meshed due to some unexpected action, the panel storage side chain guiding member is not provided. 9
, The panel driving sprocket 8 that the panel storage side chain guide member 9 has
An inner member 9c located inside the addendum circle and above a horizontal line passing through the axis of the panel drive sprocket 8, and a panel which enters and exits the storage box 5 outside the addendum circle of the panel drive sprocket 8. An outer member 9d located in the movement path of the connecting chain 3 and above a horizontal line passing through the axis of the panel driving sprocket 8 so that the panel connecting chain 3 can be properly engaged with the panel driving sprocket 8; Since the contact link is guided in the direction of disengagement and the direction of the guide rail 1, the panel linking chain 3 is securely separated from the panel driving sprocket 8, and the above-described storing operation of the panel 2 is smoothly performed.

Here, the inner member 9c and the outer member 9d
The functions and effects of are described in more detail. Since the panel linking chain 3 comes into contact with two portions of the inner member 9c located inside the addendum circle of the panel driving sprocket 8 and the outer member 9d located outside the addendum circle. This contact area is extremely enlarged, and the disengagement is performed very reliably and efficiently, and the unreasonable force generated at the time of disengagement is concentrated on the panel connecting chain 3 and the panel storage side chain guiding member 10 at one place. Because there is no unnecessary damage, it is unlikely to cause unnecessary damage and its life is extremely long. In particular, since such contact always occurs at the time of the above-mentioned reverse starting, such an effect is extremely important.

Further, since the inner member 9c comes into contact with the root of the panel connecting chain 3 meshing with the panel driving sprocket 8 at the meshing position to cancel the meshing, the meshing canceling effect is extremely remarkable. is there.

Further, the inner member 9c and the outer member 9d
Are positioned above a horizontal line passing through the axis of the panel driving sprocket 8, so that the disengagement of the panel linking chain 3 from the panel driving sprocket 8 can be performed very efficiently and effectively. In addition, since the inner member 9c and the outer member 9d are located near the starting end of the storage rail 4 as viewed from the side as shown in FIG. 1, the engagement of the panel linking chain 3 is released at an extremely effective timing. be able to.

When the panel is stored, the panel linking chain 3 moves into the storage box 5 together with the first panel 2 without being entangled by the chain tip guide rod 6, and in the folded storage state of the panel 2, two points are shown in FIG. As shown by the dashed line (a), the panel 2 is in a state of regularly hanging down in a U-shape along the side surface of each panel 2.

As described above, when each panel 2 changes its direction from the vertical movement in the vertical position along the guide rail 1 to the horizontal movement in the parallel position along the storage rail 4, the initial position of the horizontal movement in the parallel position is changed. In the above, the panel connecting chain 3 connecting the preceding panel 2 and the succeeding panel 2 hangs down, but this hanging portion is guided downward along the side edge 9a of the panel storage side chain guide member 9, so that the panel connecting chain 3 It is possible to reliably prevent the hanging portion of the linking chain 3 from being entangled with and meshed with the panel driving sprocket 8, so that damage to the storage rail 4 and elevation of the panel 2 are not hindered. This series of operations is repeated each time the subsequent panel 2 reaches the vicinity of the storage rail 4.

Next, the switchgear 13 is moved from the above-mentioned panel storage state.
When the panel drive sprocket 8 is rotated in the reverse direction, the panel drive sprocket 8 is rotationally driven in the counterclockwise direction in FIG. 1 by the rotation output, so that the storage rail is moved via the panel linking chain 3 meshed with the panel drive sprocket 8. The upper panel 2 is sequentially pulled out in the feeding direction.

At this time, in the vicinity of the panel driving sprocket 8, first, the panel linking chain 3 is securely brought into a predetermined meshing position of the panel driving sprocket 8 by the side edge 9 a and the upper edge 9 b of the panel storage side chain guide member 9. Will be guided to. Further, the panel linking chain 3 is smoothly separated from the panel driving sprocket 8 by the other panel entrance / exit side chain guide member 10.

That is, the panel connecting chain 3 is connected to the inner member 1 located inside the tip circle of the panel driving sprocket 8.
0a and the outer member 10b located outside the addendum circle, so that the contact area is greatly enlarged, and the disengagement is performed very reliably and efficiently. Since unreasonable force generated at the time of disengagement does not concentrate on one place in the linking chain 3 and the panel entrance / exit-side chain guide member 10, useless damage hardly occurs and the life is extremely long. In particular, since the contact between the two always occurs at the time of the reverse starting, such an effect is extremely important.

Further, since the inner member 10a releases the meshing by coming into contact with the root of the meshing position of the panel connecting chain 3 meshing with the panel driving sprocket 8, the meshing releasing effect is extremely remarkable. is there.

If the panels 2 are folded or clogged in the guide rail 1 in the above-described process of raising and lowering the panels 2, the panels 2 will not move, resulting in a scandal. It is a factor of occurrence.

However, in this case, the panel linking chain 3
In this case, abnormal refraction occurs, and by detecting the extraordinary refraction by the chain slackness detecting device 7, it is possible to immediately cope with a scandal situation such as a major accident caused by folding or clogging of the panels 2 with each other.

[0071]

As described above, according to the first aspect of the present invention, the free end of the panel connecting chain which meshes with the panel driving sprocket and extends in the panel storage direction is provided in the panel parallel posture inside the bracket. The free end of the panel connecting chain can be moved together with the panel which first shifts to the storage rail when the panel is stored, since it is movably moored in the moving direction. It is not necessary to connect and fix the free end of the panel to the end of the depth of the storage box, so that the length of the panel connecting chain can be shortened, and the free end side of the panel connecting chain does not loosen greatly when the panel is stored. There is an effect that the entanglement of the panel connecting chain during the elevating operation can be reliably prevented. In addition, since the free end of the panel connecting chain is always moored to the chain tip guiding device, the panel connecting chain does not come off from the panel driving sprocket when the panel is extended, thereby improving safety and reliability. This has the effect of greatly improving.

According to the second aspect of the present invention, the chain end guide rod is disposed above the storage rail, and the free end of the panel-linked chain is freely and movably fitted to the chain end guide rod. Therefore, the configuration is extremely simple, and the chain tip guide rod arranged above the storage rail as described above is a panel connecting chain that connects the panels in the parallel posture suspended on the storage rail. U
Since it does not become an obstacle when bending and hanging in the shape of a letter, there is no need to particularly provide a space for arranging the chain tip guide rod in the storage box. Therefore, a compact receiving structure can be achieved, and the case of claim 1 can be obtained. Similar effects can be obtained.

According to the third aspect of the present invention, the chain tip guide rod is disposed by utilizing the upper space between the panel suspended by the storage rail and the bracket. The same effect as in the case is obtained.

According to the fourth aspect of the present invention, the chain leading guide bar is disposed by utilizing the panel suspended by the storage rail and the space above the blanket. Similar effects can be obtained.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a storage box portion of a panel shutter according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged partial longitudinal sectional view showing a coupling portion between a panel and a panel connecting chain in FIG. 1;

FIG. 4 is a partial longitudinal sectional view of the panel.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a configuration explanatory view in which a part of a panel connection chain is sectioned.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide rail 2 Panel 3 Panel connection chain 4 Storage rail 5a Bracket 6 Chain tip guidance device (chain tip guidance rod) 8 Panel drive sprocket 25 Hanging roller

Claims (4)

[Claims] 1. A pair of left and right guide rails arranged on both sides of a shutter opening / closing opening and having a storage box at an upper part, a plurality of panels for elevating and closing between the guide rails, and pivotally supported on both sides of the panel. A hanging roller,
A panel connecting chain connecting the panels in series, a panel driving sprocket in which the panel connecting chain is meshed in the storage box, and a panel that has passed the panel driving sprocket in the panel storage direction. A storage rail that rotatably supports the suspending roller, and the panel connecting chain is fed by a forward / reverse rotation of the panel driving sprocket to move the series of panels in a serial posture along the guide rail. A chain tip guiding device for a panel shutter that transfers the vertical movement and the horizontal movement in a parallel posture along the storage rail. 2. A pair of left and right guide rails arranged on both sides of a shutter opening / closing opening, a plurality of upper and lower panels for elevating and closing between the guide rails, and a suspension supported by the left and right sides of the panel. Roller, a panel linking chain connecting the panels to each other on both left and right sides, a left and right bracket arranged to form a panel storage section on the upper part of the guide rail, and the guide rail in the bracket A panel driving sprocket rotatably supported above the panel and meshing with the panel linking chain; and a panel hanging roller provided on the bracket and passing the panel driving sprocket toward the panel storage direction. A panel rail having a storage rail for suspending and storing the panels in a side-by-side manner in the panel shutter. A chain tip guide for a panel shutter, wherein a free end of the panel linking chain extending from the bracket to the panel storage direction side is always moored movably in the panel movement direction along the storage rail inside the bracket. apparatus. 3. A pair of left and right guide rails arranged on both sides of a shutter opening / closing opening, a plurality of upper and lower panels for elevating and closing between the guide rails, and a suspension supported by left and right sides of the panel. Roller, a panel linking chain connecting the panels to each other on both left and right sides, a left and right bracket arranged to form a panel storage section on the upper part of the guide rail, and the guide rail in the bracket A panel driving sprocket rotatably supported above the panel and meshing with the panel linking chain; and a panel hanging roller provided on the bracket and passing the panel driving sprocket toward the panel storage direction. And a storage rail for suspending and storing the panels in a side-by-side manner in a panel shutter. A chain tip guide rod is disposed, and a free end of the panel linking chain extending from the panel driving sprocket to the panel storage direction side is movably fitted to the chain tip guide rod. Chain shutter guidance device for panel shutter. 4. The panel shutter chain according to claim 2, wherein the chain tip guide rod is disposed above a space between the panel suspended by the storage rail and the bracket. Advanced guidance device.