JPH0616079Y2 - Shutter-opening / closing drive - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an improvement of a shutter opening / closing drive device that opens / closes a shutter curtain composed of a series of panels.

[Prior art]

A conventional shutter opening / closing drive device of this type opens / closes a shutter curtain by operating an opening / closing device such as a geared motor, a first driven rotating shaft rotatably driven by the opening / closing device, and the first driven rotating shaft. A second axis of rotation for operation. The first driven rotary shaft includes a second sprocket (driven sprocket) that is interlocked with a first sprocket (main driving sprocket) integrated with the output shaft of the opening / closing machine via an endless chain, and a pair of left and right panel lifting drives. Third and fourth sprockets, which are system sprockets, and a fifth sprocket that transmits a rotational driving force to the second driven rotary shaft are integrally fitted and coupled. Further, the second driven rotary shaft is provided with a sixth sprocket for inputting a rotational driving force from the first driven rotary shaft via the fifth sprocket and the endless chain, and a plurality of panels constituting a shutter curtain. A pair of right and left paired left and right sprocket for engaging and winding a pair of left and right panel connecting chains, which are suspended and connected on both sides of the upper part, are integrally fitted to the third and fourth sprockets. Are connected. In the above, when the first driven rotary shaft is rotationally driven in the shutter closing direction by the switch, the rotational force is transmitted to the second driven rotary shaft, and the panel disposed above the pair of left and right vertical guide rails. When each panel in the storage box (hereinafter, simply referred to as a box) descends between the vertical guide rails via the panel connecting chain, the panels are held in the same vertical plane between the vertical guide rails and the vertical guide rails are held. Close between the guide rails. When the second driven rotary shaft is rotationally driven via the first driven rotary shaft by starting the switch in the shutter open direction from such a shutter closed state, each panel between the vertical guide rails. , And the panels are guided into the box and suspended and stored in parallel.

[Problems to solve problems]

Since the conventional shutter opening / closing drive device is configured as described above and requires eight sprockets for the output system of the opening / closing device, the number of parts is large, the structure is complicated, the number of assembling steps is increased, and the cost is increased. Inevitably, there is a problem in that the shutter device becomes large as a whole. Further, since the driven rotary shaft is a long shaft corresponding to the panel width, if only the both ends of the driven rotary shaft are supported by the bracket, a bending phenomenon occurs in the driven rotary shaft and a panel moving in the box is generated. The interference causes interference with the rotation of the driven rotary shaft, which makes it difficult to move the panel smoothly. This invention was made in order to solve the above problems, and the number of sprockets in the switchgear output system was halved compared to the conventional one, which significantly reduced the number of parts, reduced the number of assembly steps, and reduced the cost. In addition, the entire device can be downsized, and only one driven rotary shaft of the switch output system can be used. Moreover, the bending phenomenon of the driven rotary shaft can be prevented in advance and the panel can be opened and closed smoothly and reliably at all times. An object of the present invention is to provide a shutter opening / closing drive device that can be operated.

[Means for solving problems]

A shutter opening / closing drive device according to the present invention is provided with a pair of right and left vertical guide rails equipped with a box for driving a panel up and down, and a drive unit fitted and coupled to an output shaft of the switch. A sprocket, a driven rotary shaft horizontally supported in the box so as to interlock with the main drive sprocket, and both end portions of the driven rotary shaft are fitted and coupled to both end sides of the driven rotary shaft. The two left and right panel lifting drive system sprockets corresponding to the upper side are fitted and coupled to one end of the driven rotary shaft, and the driving sprockets are provided near the outside of the panel lifting drive system sprockets on one side thereof. It comprises one driven sprocket in a corresponding position and an endless chain for power transmission meshed and wound around the driven sprocket and the driving sprocket. In the right panel lift drive system sprocket with is meshed with the panel interlocking chain, in which rotatably to support the middle portion of the driven rotor by the intermediate bearing member.

[Action]

In the shutter opening / closing drive device according to the present invention, when the opening / closing device is activated in either forward or reverse direction, the rotation output of the opening / closing device is transmitted to the driven sprocket → the endless chain → the driven sprocket on one end of the driven rotary shaft. As a result, the driven rotary shaft rotates, and the left and right panel lifting drive system sprockets connected by the driven rotary shaft are driven to rotate synchronously as a unit, and the panel connecting chain meshed with these panel lifting drive system sprockets. A plurality of upper and lower panels connected to each other move to a drawer closed position between the vertical guide rails or a folded storage position in the box. Further, since both ends of the driven rotary shaft are supported and the middle portion is also supported by the intermediate bearing member, bending of the driven rotary shaft during rotation is prevented in advance. Therefore, the panel moving in the box does not interfere with the driven rotary shaft, and the panel can be always smoothly and reliably moved.

【Example】

An embodiment of the present invention will be described below with reference to the drawings. First, the shutter device 1 shown in FIG. 1 and FIG.
A box 2 for storing the shutter that is horizontally arranged above the opening for opening and closing the shutter, such as the entrance and exit of a building
And a pair of left and right vertical guide rails 3 which are vertically attached to the lower portions of both sides of the box 2, and a shutter 4 which is mounted between the vertical guide rails 3 and is driven up and down. The shutter 4 has a configuration in which a plurality of panels 5 are connected, and these panels 5 are held in a closed state in which they are adjacent to each other in the same vertical plane between the vertical guide rails 3 on both sides, and
Inside the box 2, as shown in FIG. 6, it is suspended and held in a parallel folded state. More specifically, in this embodiment, each panel 5 has an upper frame 6 as shown in FIGS. 3 and 4.
And a lower frame 7 and vertical frames 8 on both sides. Here, the upper frame 6 and the lower frame 7 are formed by rolling a metal plate made of a light metal such as aluminum or steel, and their cross-sectional shapes are configured as shown in, for example, FIG. That is, by rolling the metal plate, the upper frame 6
And the lower frame 7, the panel main plate portion 9, 10
And the upper and lower reinforcing ribs 11 and 12 in which the front surface sides of the panel main plate portions 9 and 10 are depressed in the shape of lateral grooves and project to the back side, the fitting convex portion 13 along the upper end surface of the upper frame 6, and the lower portion. A fitting recess 14 is integrally formed along the lower end surface of the frame 7. The upper frame 6 and the lower frame 7 are arranged in parallel with each other, and a pair of left and right vertical frames 8 having a U-shaped cross section are fitted and connected and fixed at both left and right ends of the upper and lower frames 6, 7. By doing so, the main part of the panel 5 is assembled. By this assembly, a window hole 15 is formed between the upper and lower frames 6 and 7, and a window frame 16 is attached to the back side of the window hole 15 between the reinforcing ribs 11 and 12. A transparent plate 18 is fitted and held in the window frame 16 via an elastic ring 17 made of rubber or the like. Each panel 5 configured as described above is shown in FIGS.
As shown in FIG. 8, FIG. 9, FIG. 9, and FIG. 13, both upper ends of the respective chains are connected at equal intervals to a pair of left and right chains (panel connecting chains) 20 via long pins 19. Each of these chains 20 includes a pair of inner link plates 2
In the normal structure in which the 1 and the outer link plate 22 are sequentially connected by the bush 23 and the link pin 24, the link pin 24 at the mounting portion of the panel 5 is removed from the bush 23, and the long pin 19 is rotated there. The structure is freely inserted. As shown in FIGS. 6 and 7, the chain 20 is engaged with the panel elevating and lowering drive system sprockets 31 and 32 arranged in the box 2 to be vertically moved, whereby the panel 5 is vertically guided. It is designed to move up and down along the rails 3. An upper roller 25 for hanging the panel is rotatably attached to the tip end side of the long pin 19. In addition, the lower ends of both sides of each panel 5 have two side chains 2.
A lower roller 26 for raising and lowering a guide and for steadying is rotatably supported at a position deviated rearward from each center of 0. On the other hand, in the box 2, as shown in FIG. 6, a chain slack sensing device 27 is provided near the upper end side of each of the vertical guide rails 3. The chain slack sensing device 27 is provided for the chain 20 due to the folding weight or clogging of the panel 5 in the vertical guide rail 3.
Has a function of detecting the refracting power and the like, an alarm function at the time of the detection, or an automatic stop function of the switch 36 described later. Further, in the box 2, as shown in FIGS. 6 and 7, a support rail for suspending and accommodating a panel, the front end of which is connected to the upper end of the vertical guide rail 3 via a chain / sprocket mesh separating device 28. 29 and a chain tip guide rod 30 parallel to the support rail 29 above. The chain / sprocket mesh separating device 28 bends and transfers the chain 20 between the upper ends of the vertical guide rails 3 and the front ends of the support rails 29, and includes an outer chain release plate 28A and an inner chain release plate 28B. It consists of These chain release plates 28A and 28B form a chain bending guide path 28C between them. In this chain bending guide path 28C, as shown in the thirteenth illustration, the outside of the inner and outer link plates 21 and 22 of the chain 20 is in sliding contact with the outer chain separating plate 28A, and the bush 23 of the chain 20 is on the opposite side thereof. The inner chain release plate 28B is slidably contacted. As a result, the chain 20 is smoothly bent and guided. The rear side of the support rail 29, which is separated from the chain / sprocket mesh separating device 28, gradually inclines downward, and the upper roller 25 of the chain 20 that has passed through the chain bending guide path 28C engages and rolls. The panels 5 are suspended and held in a parallel folded state. Here, as shown in FIG. 8, the support rail 29 includes a groove bottom portion 29a and both side wall portions 29b and 29c on both sides of the groove bottom portion 29a, and one side wall portion 29b thereof.
Is attached to the side wall inside the box 2. On the other hand, the upper roller 25 is composed of a roller shaft portion 25a coaxially connected to the tip of the long pin 19 and a roller portion 25b integrally connected to the roller shaft portion 25a. The outer peripheral surface of the roller portion 25b is engaged and supported on the groove bottom portion 29a of the support rail 29 in a surface contact state. In this way, by bringing the roller portion 25b and the groove bottom portion 29a into surface contact with each other, sufficient strength can be obtained even if the upper roller 25 is integrally formed of synthetic resin or the like instead of metal. Therefore, it is possible to reduce wear between the roller portion 25b and the groove bottom portion 29a, improve durability, reduce noise, and reduce costs. The tip of the chain 20 is loosely fitted to the chain tip guide rod 30 so as to move the chain 20 following the panel 5. Further, on both side wall portions (both side brackets) of the box 2, a pair of left and right panel elevating drive system sprockets 31, near the chain / sprocket meshing / separating device 28 are provided.
32 is rotatably supported. These panel up-and-down drive system sprockets 31 and 32 are coaxially and integrally connected by a driven rotation shaft (hereinafter, simply referred to as a rotation shaft) 33. As shown in FIGS. 10 to 13, the rotary shaft 33 is rotatably supported on both side walls of the box 2 via bearings 34, and the sprocket 31, 32 is integrally fitted to the rotary shaft 33. It comprises shaft portions 33a and 33b and a large-diameter cylindrical shaft portion 33c that coaxially integrally connects these small-diameter rotating shaft portions 33a and 33b. By the way, the rotary shaft 33 has a considerably long axial length corresponding to the lateral width of the panel 5, is heavy and easily bends, and the deflection causes the panel 5 to be guided and moved in the chain bending guide path 28C. The upper end of the rotary shaft 33
May interfere with the smooth transition of the panel 5. Therefore, as shown in FIG. 10 to FIG. 12, by flexibly supporting the substantially middle portion of the large-diameter cylindrical shaft portion 33c by the U-shaped supporting member 35, the bending of the rotating shaft 33 is prevented. However, the rotation shaft 33 does not hinder the transition of the panel 5. Here, the support member 35 serves as an intermediate bearing member of the rotary shaft 33, and as shown in FIGS. 11 and 12, is tightened and held by a nut N on the upper portion of the intermediate reinforcing frame member 2a in the box 2. Has been done. Both ends of the supporting member 35 may be welded to the intermediate reinforcing frame member 2a, and the intermediate portion of the large-diameter cylindrical shaft portion 33c may be supported by the supporting member 35 via a bearing. . Then, the chain 20 is attached to the sprockets 31 and 32.
Are in mesh. In this case, as shown in FIGS. 6, 7, and 13,
The outside of the bent portion of the chain 20 bent by the chain bending guide path 28C is engaged with the sprockets 31 and 32, respectively. In this way, the outer bent portion of the chain 20 is attached to the sprocket 3
By engaging the sprockets 31 and 32 with each other, the sprockets 31 and 32 can be arranged close to the upper corners of the box 2, whereby dead spaces near the sprockets 31 and 32 in the box 2 can be arranged. Can be reduced. The panel lifting drive system sprockets 31 and 32 are
One opener / closer 36 for raising and lowering the panel shown in FIG. 8 and FIG.
It is designed to be driven to rotate in the normal and reverse directions. The switch 36 is mounted on one side wall portion (one side bracket) of the box 2 and includes a geared motor having an output shaft that slowly penetrates the one side wall portion from the inside to the outside, and the outer end of the output shaft. One driving sprocket 37 is fitted and coupled to the portion. Further, one of the small-diameter rotary shaft portions 33 of the rotary shaft 33 is
One driven sprocket 38 positioned corresponding to the driving sprocket 37 is fitted and coupled to the outer end of b. An endless chain 39 for power transmission is meshed and wound around the main driving sprocket 37 and the driven sprocket 38. Therefore, when the switch 37 is rotationally activated in either forward or reverse direction, the rotational output thereof is transmitted to the main sprocket 37 → endless chain 39 → driven sprocket 38 → rotary shaft 33. As a result, the panel raising / lowering drive system sprockets 31 and 32 on both sides of the rotary shaft 33 are driven to be synchronously rotated integrally. In addition, in the lower part of the box 2 shown in FIG.
As shown in the figure, a lower rail 40 for panel steadying is arranged parallel to the support rail 29. The lower rail 40 has a panel guide portion 41 whose front end side is connected to each vertical guide rail 3 on the inlet side of the box 2 and which is inclined in the same direction corresponding to the chain bending guide path 28C. Here, the upper roller 25 of the panel 5 is connected to the support rail 2
9, when the lower rail 26 of the panel 5 moves while engaging with the lower surface of the lower rail 40, each panel between the lower rail 40 and the support rail 29. Each of the panels 5 is moved while being maintained in a vertical posture, so that each of the panels 5 is prevented from swinging. Next, the operation of the above embodiment will be described. Since the upper roller 25 of each panel 5 is engaged and supported on the support rail 29 in the box 2 and the lower roller 26 is engaged with the lower surface of the lower rail 40, each panel 5 is folded in parallel. In the stored state in which it is suspended and held by the switch 36
Is rotationally activated in the shutter closing direction, the rotary shaft 33 is rotationally driven through the output sprocket 37, the endless chain 39, and the driven sprocket 38, respectively. Then, the left and right panel lifting drive system sprockets 31 and 32 rotate integrally with the rotary shaft 33,
The chain 20, which is held between the support rail 29 and the lower rail 40 and connects the panels 5 to each other, is extended to the vertical guide rails 3 from above. As a result, the panels 5 are sequentially lowered and extended to the position where the openings such as the windows between the vertical guide rails 3 are closed, and the shutter is used. When the opening / closing switch 36 is reversely rotated and started from such a shutter use state, the rotation output thereof is reversely driven to rotate the rotation shaft 33 by the power transmission in the same manner as in the case where the shutter is closed. Left and right panel lifting drive system sprockets 31, 32 that rotate integrally with the shaft 33
The chain 20 that meshes with the ascends the vertical guide rail 3 and enters the box 2. In this case, the upper roller 25 of each panel 5 is engaged and transferred onto the support rail 29 via the chain bending guide path 28C of the chain / sprocket mesh separating device 28. At the same time, the lower roller 26 of each panel 5 is engaged with the lower surface of the lower rail 40 via the panel guide portion 41 of the lower rail 40 and moves. As a result, the swing of each panel 5 is prevented, and each panel 5 is sequentially stored in the folding suspended state in the box 2 by moving onto the support rail 29.

[Effect of device]

As described above, according to the present invention, only one driven rotary shaft of the power transmission system that is rotationally driven by one switch is required.
The number of driven rotary shafts in the power transmission system of the switch and the number of sprockets provided on the driven rotary shafts can be reduced by half as compared with the conventional case where two driven rotary shafts are required. . That is, there is one driven rotary shaft that is integrally driven by connecting two left and right panel elevating and lowering drive system sprockets, and is driven to rotate by the one opening / closing machine, and only one driven rotary shaft has one driven end.
Since two driven sprockets are provided and no driven sprockets are provided at the opposite end of the driven rotation shaft, the number of sprockets arranged in the output system of the switch is equal to the output shaft of the switch. One driving sprocket that is fitted and connected, two left and right panel lifting drive system sprockets that are integrally connected by one driven rotary shaft, and one that is fitted and connected to one end of the driven rotary shaft. Since a total of four driven sprockets is required, the number of sprockets, which conventionally required eight in the output system of the switch, is halved. Therefore, the shutter opening / closing drive device according to the present invention has a significantly reduced number of parts as compared with the conventional device, the structure is simple and the assembly man-hours are significantly reduced, the cost can be reduced, and the entire device can be downsized. There is an effect. Moreover, since one main driving sprocket fitted and coupled to the output shaft of the switchgear and one driven sprocket fitted and coupled to one end of the driven rotary shaft are interlocked by an endless chain, The rotation output is transmitted from one main driving sprocket to one driven sprocket through one endless chain, and one driven rotary shaft integrally having the driven sprocket is rotationally driven and integrated by the driven rotary shaft. The two left and right panel elevating and lowering drive system sprockets connected to each other are synchronously driven to move the pair of left and right panel connecting chains meshed with the panel elevating and lowering drive system sprockets smoothly and reliably in the panel opening / closing direction. The effect is that you can. Further, in the shutter opening / closing drive device having the above-described effects, the middle bearing member rotatably supports the middle part of the driven rotary shaft of one long shaft mounted in the panel storage box in a supported state at both ends. Therefore, the bending of the driven rotary shaft can be prevented in advance. Therefore, it is possible to prevent the panel moving in the box from interfering with the driven rotary shaft and to move the panel smoothly and reliably.

[Brief description of drawings]

FIG. 1 is a front view of the entire shutter device according to an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is an enlarged front view of a panel connected and suspended by a chain, and FIG. 4 is the same panel. FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is an enlarged vertical side view of the panel storage box, and FIG. 7 is a portion of the chain / sprocket meshing separation device mounting portion of FIG. FIG. 8 is an enlarged view, FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 6, FIG. 9 is an enlarged transverse sectional view of the vertical guide rail 3, FIG. 10 is a configuration diagram of a panel lifting drive system, and FIG. 11 is a sprocket rotation. A sectional view of the shaft mounting portion, FIG. 12 is a sectional view taken along line XII-XII in FIG. 11, and FIG.
The drawing is an enlarged sectional view taken along line XIII-XIII in FIG. In the figure, 1 is a shutter device, 2 is a box, 3 is a vertical guide rail, 5 is a panel, 20 is a chain, 28 is a chain / sprocket mesh separating device, 31 and 32 are sprockets, and 36 is a panel lifting drive means.

Claims (1)

[Scope of utility model registration request] 1. Arranged on both sides of a shutter opening / closing opening,
A pair of left and right vertical guide rails having a box for storing panels, a pair of left and right panel elevating and lowering drive system sprockets arranged in the box, and a pair of left and right panel connecting chains meshed with these panel elevating and lowering drive system sprockets, A plurality of upper and lower panels suspended on both sides by these panel connecting chains are provided, and a shutter is opened and closed to move the panels to a position where the panels are pulled out between the vertical guide rails and a position where the panels are folded and stored in the box. In the drive unit, one opening / closing switch for raising and lowering the panel mounted on the box, one driving sprocket fitted and coupled to the output shaft of the opening / closing switch, and the inside of the box for interlocking with the driving sprocket. One driven rotary shaft whose both ends are supported horizontally, and the vertical guide rail which is fitted and coupled to both end sides of the driven rotary shaft. Two right and left panel raising / lowering drive system sprockets corresponding to the upper part of the driven shaft are fitted and coupled to one end of the driven rotary shaft, and the main drive is provided near the outside of the panel raising / lowering drive system sprocket on one side thereof. It consists of one driven sprocket positioned corresponding to the sprocket and an endless chain for power transmission wound around the driven sprocket and the driving sprocket, and the panel connecting chain is meshed with the left and right panel lifting drive system sprockets. A shutter opening / closing drive device characterized in that an intermediate part of the driven rotary shaft is rotatably supported by an intermediate bearing member.