JP5414267B2 - Device for preventing lateral displacement of curtain constituent members in shutter device - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curtain component preventive device for preventing a curtain component such as a slat of a shutter curtain from excessively shifting in a shutter device in which a shutter curtain is wound and fed by a winding shaft. .

  A shutter device for opening and closing an opening such as an entrance / exit with a shutter curtain has a winding shaft that rotates for winding and unwinding the shutter curtain, and two left and right supports that support both ends of the winding shaft. In some shutter curtains, at least a part of the shutter curtain is formed of slats. This shutter curtain has a slat connecting portion formed by connecting a plurality of slats in the up-down direction that is the opening / closing movement direction of the shutter curtain. The slats are connected by engaging engagement portions such as curl portions formed on the upper and lower ends of the slats.

  Each engaging part has a length in the length direction of the slat, in other words, a length in the lateral direction (left and right direction), and the shutter curtain can be smoothly wound and fed out on the winding shaft. Therefore, when the slat connecting portions of the shutter curtain are constituted by the respective slats, the slats that are the curtain constituting members constituting the shutter curtain are displaced in the lateral direction. There is a risk that.

For this reason, there is a possibility that the slats may be laterally displaced due to vibration or the like when the shutter curtain is opened and closed by the rotation of the winding shaft, and the slats are excessive in the shutter device shown in Patent Document 1 below. A lateral deviation preventing means for preventing lateral deviation is provided. This lateral slip prevention means is composed of rollers arranged at the upper ends of the left and right guide rails for guiding the opening and closing movement of the shutter curtain.
Japanese Utility Model Publication No. 5-54799

  According to this lateral displacement prevention means, excessive lateral displacement of the slat relative to the two left and right guide rails can be prevented, but the lateral displacement of the slat is caused by the winding shaft, for example, the inclination of the winding shaft relative to the horizontal If the lateral displacement of the slat occurs due to the deflection of the winding shaft, the lateral displacement may occur in the slat of the shutter curtain when it is wound on the winding shaft. When the amount is excessively larger than the allowable value, there is a possibility that the slat may interfere with the support member supporting the take-up shaft, the member disposed on the support member, the device, or the like. There is.

  An object of the present invention is to provide a lateral displacement prevention device for a curtain constituent member in a shutter device that can prevent the curtain constituent member of the shutter curtain from being excessively laterally displaced when being wound around a winding shaft. is there.

  An apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device according to the present invention includes a winding shaft that rotates for winding and unwinding a shutter curtain, and two left and right support members that support both ends of the winding shaft. And a lateral deviation prevention means for preventing excessive lateral deviation of the curtain constituent members constituting the shutter curtain, and the lateral deviation prevention means of the curtain constituent members in the shutter device comprising: It is arranged on at least one of the two left and right support members.

  According to this lateral displacement prevention device, the lateral displacement prevention means for preventing excessive lateral displacement of the curtain constituent members is the two left and right support members that support both ends of the winding shaft for winding and unwinding the shutter curtain. Among them, since it is arranged on at least one of the support members, the curtain constituting member of the shutter curtain when being wound on the take-up shaft is excessively displaced to the side where the lateral displacement preventing means is disposed. This can be prevented by the lateral slip prevention means.

  Even if the lateral slip prevention means is arranged on the take-up shaft, the curtain constituent member of the shutter curtain when it is wound on the take-up shaft is prevented from being excessively laterally shifted to the side where the lateral slip prevention means is placed. However, according to this, in the production process of the take-up shaft, a process for attaching a lateral slip prevention means to the take-up shaft is added, and according to this, the production work of the take-up shaft cannot be performed as a continuous operation. Inconvenience such as occurs.

  On the other hand, when the lateral slip prevention means is arranged on the support member that supports the take-up shaft as described above, it is possible to attach a member attached to the support member, for example, a take-up shaft bearing member, Since it is possible to perform the placement work of the lateral slip prevention means together with the work of mounting the shaft connected to the spindle, etc., this is advantageous in terms of workability.

  Further, in the present invention, the amount of the excessive lateral displacement that is prevented by the lateral displacement prevention means for the curtain constituent members constituting the shutter curtain is the use of the shutter device to which the lateral displacement prevention device according to the present invention is applied. It can be arbitrarily set based on characteristics and the like.

  For example, the amount of excessive lateral deviation according to the first is that the lateral deviation prevention means is arranged when the shutter curtain is guided by two guide rails on the left and right to perform opening and closing movement in the vertical direction. This is the amount when the curtain constituent member advances beyond the maximum squeezing position in the left-right direction of the shutter curtain in the guide rail on the same side as the support member, and further in the same direction as this squeezing direction. Further, the amount of excessive lateral displacement according to the second example exceeds the position of the end portion of the winding shaft on the side where the lateral displacement prevention means is disposed, and the curtain is further moved to the side where the lateral displacement prevention means is disposed. This is the amount by which the component is advanced. Further, the amount of excessive lateral deviation according to the third is beyond the position where the side of the side opposite to the winding shaft is slightly returned from the position of the side of the winding shaft where the lateral deviation prevention means is disposed. Further, the amount of the curtain constituent member advances toward the side where the lateral slip prevention means is disposed.

  In other words, the limit allowable position for the amount of lateral displacement according to the first is a position corresponding to the maximum squeezing position in the left-right direction of the shutter curtain on the guide rail on the same side as the support member on which the lateral displacement prevention means is disposed. The limit allowable position for the amount of lateral deviation according to the second is the position of the end portion of the winding shaft on the side where the lateral deviation prevention means is arranged, and the amount of lateral deviation according to the third The limit allowable position is a position slightly returned from the position of the end portion on the winding shaft where the lateral displacement prevention means is disposed to the end portion on the opposite side of the winding shaft.

  Further, in the present invention, the curtain constituent member that is prevented from excessive lateral deviation by the lateral deviation prevention means may be any member as long as it is a member constituting a shutter curtain, for example, a slat, a panel, a sheet, Alternatively, it may be a net or a rod-like member such as a plurality of pipes connected by links.

  Furthermore, the lateral displacement prevention means according to the present invention may be provided on both the left and right support members, or the lateral displacement prevention means is provided only on one of the left and right support members. When this is required, the lateral slip prevention means may be disposed only on the one support member.

  Further, the lateral slip prevention means may be disposed directly on the support member, or indirectly through a member disposed on the support member.

  An example of the latter is a case where a connecting shaft connected to the take-up shaft is arranged on the support member on which the lateral deviation preventing means is arranged. By attaching the lateral deviation preventing means to the connecting shaft, the connecting shaft is interposed. Further, the lateral slip prevention means may be disposed on the support member.

  Thus, when the lateral slip prevention means is arranged on the support member via the connecting shaft, the connecting shaft may rotate integrally with the take-up shaft, and may not rotate integrally with the take-up shaft, for example, A non-rotating fixed shaft may be used.

  When the connecting shaft is rotated integrally with the winding shaft, the lateral slip prevention means attached to the connecting shaft also rotates integrally with the winding shaft, and the shutter curtain wound around the winding shaft is rotated. Even if the laterally offset curtain constituent member comes into contact with the lateral slip prevention means, the curtain constituent member rotates integrally with the take-up shaft, the connecting shaft, and the lateral slip prevention means. It can be prevented from occurring.

  Moreover, the shape and structure of the lateral slip prevention means according to the present invention are arbitrary, and one example thereof is that the lateral slip prevention means is formed by a disk-shaped member having a central portion coaxial with the winding shaft. In another example, the lateral slip prevention means includes a ring-shaped rim member centered on a coaxial central portion with the winding shaft, and a plurality of spoke members that connect the rim member and the coaxial central portion. And forming.

  When the lateral slip prevention means is formed by a disk-shaped member having a coaxial central part with the winding shaft, the outer peripheral edge of the disk-shaped member is inclined obliquely toward the side opposite to the winding shaft side. It is good also as an edge.

  According to this, when the shutter curtain is being wound around the winding shaft, an excessive lateral shift has occurred in the curtain constituent member before reaching the winding shaft in the same amount or smaller than the above-mentioned inclined edge portion. In addition, the inclined edge portion serves as a guide portion, and the curtain constituent member can be corrected and moved toward the winding shaft.

  Such an inclined edge portion includes a plurality of lateral slip prevention means for connecting the ring-shaped rim member centering on the coaxial central portion with the winding shaft and the rim member and the coaxial central portion. The spoke member can also be provided on the outer peripheral edge of the rim member.

  Moreover, it is preferable to form a maintenance opening that penetrates in the axial direction of the take-up shaft in the lateral slip prevention means.

  According to this, on the support member on which the lateral slip prevention means is disposed, a member or device requiring maintenance on the side opposite to the winding shaft side with respect to the lateral slip prevention means, for example, a quick drop of a shutter curtain Even if a shutter curtain rapid fall prevention device for preventing this is arranged, the lateral slip prevention means can be maintained through the maintenance opening without being disturbed.

  A plurality of such maintenance openings may be provided in the circumferential direction centered on the coaxial center with the winding shaft in the lateral slip prevention means, and the coaxial central portion with the winding shaft in the lateral slip prevention means. A plurality of them may be provided in the radial direction centered at the center, and a plurality of them may be provided both in the circumferential direction and in the radial direction.

  It should be noted that the formation of the maintenance opening that penetrates in the axial direction of the take-up shaft in the lateral slip prevention means in this way means that the lateral slip prevention means is placed on the take-up shaft, not the support member on which the lateral slip prevention means is disposed. It can also be carried out when arranging.

  Further, when the shutter curtain is guided by the two left and right guide rails to perform the vertical opening and closing movement, the lateral deviation preventing means is arranged between the two left and right guide rails. You may make it respond | correspond with the left-right direction maximum penetration position of the shutter curtain in the guide rail on the same side as the said supporting member.

  According to this, the lateral deviation allowable position of the curtain constituent member defined by the guide rail and the lateral deviation allowable position of the curtain constituent member on the winding shaft defined by the lateral deviation preventing means can be matched.

  Moreover, the lateral slip prevention device according to the present invention can be applied to a shutter device in which the shutter curtain is formed of an arbitrary curtain constituent member. That is, in the present invention, the entire or main part of the shutter curtain may be formed of the same type of curtain constituent member, for example, a slat, or the entire or main part of the shutter curtain is a sheet, panel, net, link. It may be formed by a rod-like member such as a plurality of pipes that are connected together, or the whole or the main part of the shutter curtain is connected by these slats, sheets, panels, nets, and links. You may form with the combination of a some curtain structural member among rod-shaped members, such as a some pipe.

  Further, the rotation of the winding shaft for opening and closing the shutter curtain may be performed by a driving device such as an electric motor, may be performed by the weight of the shutter curtain, may be performed manually, and the weight of the weight member. May be performed using a combination of a plurality of these. In addition, when a return spring is arranged on the winding shaft so that the return spring force is accumulated by the downward movement of the shutter curtain, the upward opening movement of the shutter curtain is accumulated by the return spring. The return spring force may be used as an auxiliary force.

  Further, the lateral slip prevention device according to the present invention can be applied to shutter devices for various uses, and these shutter devices include a management shutter device for opening and closing an opening such as an entrance / exit with a shutter curtain. In addition, a shutter device for disaster prevention for forming a disaster prevention zone with a fully closed shutter curtain, and a combined shutter device for management and disaster prevention are included. Further, the shutter device for disaster prevention includes a shutter device for lifting means for forming a disaster prevention section in the vicinity of the lifting means such as an elevator or a staircase.

  According to the present invention, it is possible to obtain an effect that it is possible to prevent the curtain constituent member of the shutter curtain from being excessively shifted laterally when being wound around the winding shaft.

  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 management shutter device. That is, in the shutter device according to the present embodiment, the shutter curtain opens and closes an opening such as an entrance / exit when an operation device described later is operated. In the present invention, a sensor for detecting a person, a vehicle, or the like is used instead of the operation device, and the shutter curtain opens and closes an opening such as an entrance / exit based on a signal from the sensor. The present invention can also be applied to a shutter device.

  FIG. 1 is a front view of the entire management shutter device according to the present embodiment. In FIG. 1, the opening / closing movement direction is a vertical direction, and a shutter curtain 1 that moves downwardly closes and moves is shown. It shows a half-closed state that is closed to about half. The opening that is opened and closed by the shutter curtain 1 is an entrance / exit 2 formed in the building, and the entrance / exit 2 includes the left and right building frames 3 and 4 such as walls and the lower end of the shutter curtain 1 when fully closed. It is surrounded by a floor 5 and a ceiling member 6 which are mating members against which the part hits. The left and right building frames 3 and 4 are attached with two left and right guide rails 7 and 8 in which both end portions in the left and right direction of the shutter curtain 1, in other words, both end portions in the width direction of the shutter curtain 1 are slidably inserted. The shutter curtain 1 is opened and closed in the vertical direction by being guided by the guide rails 7 and 8 serving as guide members.

  In the ceiling space 9 partitioned by the ceiling member 6 with respect to the entrance / exit 2, two left and right brackets 10 and 11 serving as left and right support members are arranged. Is coupled to a building housing 12 such as a falling wall existing in the ceiling space 9 by a coupling tool such as a bolt, and both end portions in the axial direction of the take-up shaft 13 are rotatably supported by the brackets 10 and 11. Has been. The upper end of the shutter curtain 1 is fastened to the winding shaft 13 with a fastening tool such as a bolt, and the shutter curtain 1 passes through the slit 15 of the lintel 14 disposed on the ceiling member 6. The shutter curtain 1 is opened and closed in the vertical direction from the ceiling back space 9 side, and the shutter curtain 1 is moved up and down by forward and reverse rotation of the winding shaft 13.

  In addition, by attaching a case member having a length in the left-right direction straddling the brackets 10, 11 to the brackets 10, 11, the case shaft and the brackets 10, 11 allow the winding shaft to be placed in the ceiling space 9. You may provide the shutter box in which 13 was accommodated. In the case where such a shutter box is provided, a work opening that is opened and closed by a lid or the like or is always open is formed in the shutter box so that a maintenance work described later can be performed. The position of the shutter box in which the work opening is provided may be any position, but preferably, the work opening is formed at a position close to the position where a later-described lateral shift prevention means is disposed in the shutter box. In such a work opening, the case member is not provided, and the shutter box is formed by the brackets 10 and 11, and the shutter box has the case member and the brackets 10 and 11 as described above. For example, it may be formed at a location in the ceiling member 6 close to the arrangement position of the lateral deviation prevention means.

  The shutter curtain 1 has a curtain main body portion 16 that forms most of the shutter curtain 1 and a seat plate 17 attached to the lower end portion of the curtain main body portion 16. This is a slat connecting portion formed by connecting up and down a large number of slats 18 serving as curtain constituent members. The upper and lower ends of each slat 18 are provided with curved curled portions, and the slats 18 adjacent to each other in the vertical direction are connected to each other vertically by engagement of the curled portions. . In addition, each curl portion has a length in the left-right direction that is the length direction of the slat 18. In order to allow the shutter curtain 1 to be smoothly wound and fed out on the take-up shaft 13, each slat 18 in the shutter curtain 1 is in a state in which it can shift and move in the lateral direction which is the left-right direction. ing.

  FIG. 2 is an enlarged front view of a part of the left and right brackets 10 and 11 shown in FIG. 1 and is a partially broken front view. In FIG. Has been. At the left end of the winding shaft 13, there is provided a shaft neck member 20 having a smaller diameter than the cylindrical main body portion 19 of the winding shaft 13 and disposed at the center of the main body portion 19. The shaft neck member 20 is coupled to the main body 19 via plate-like core members 21 and 22 attached to the inside of the main body 19 by welding or the like. The left end 20A of the shaft neck member 20 protrudes from the main body 19, and this protruding portion 20A is a sliding bearing or ball bearing disposed on the left bracket 10 out of the two left and right brackets 10, 11. It is supported by the bracket 10 by a bearing member 23 such as a rotatable member. For this reason, the shaft neck member 20 is a central axis of the winding shaft 13 on the bracket 10 side.

  A connecting shaft 30 is disposed coaxially with the take-up shaft 13 on the inner surface of the right bracket 11 facing the take-up shaft 13 of the left and right brackets 10, 11. As shown in FIG. 3, a plurality of, in the present embodiment, two in the axial direction of the connecting shaft 30 are attached to the bracket 11 via bearing members 31, 32 such as sliding bearings or ball bearings. It is arranged so that it can rotate freely. FIG. 3 is a front view showing the periphery of the bearing members 31 and 32 in the connecting shaft 30 of FIG. 2 as a cross section. The bearing member 31 is a bent product of a sheet metal, and includes a holding member 33 attached to the bracket 11 by welding or the like, and a plate-like pressing member 34 fastened to the holding member 33 with a fastening member such as a screw. Is held by. The bearing member 32 is held by a holding portion 35 formed on the bracket 11 made of sheet metal and a plate-like pressing member 36 attached to the bracket 11 by welding or the like. The coupling shaft 30 is rotatably supported by the bracket 11 by these bearing members 31 and 32.

  Further, the end 30 </ b> A on the winding shaft 13 side of the connecting shaft 30 is inserted into the main body 19 of the winding shaft 13. A boss member 37 is coupled to the outer periphery of the end portion 30A. As shown in FIG. 4, the outer periphery of the boss member 37 has concave portions 37A and convex portions 37B alternately in the circumferential direction. Is formed. FIG. 4 is a side view of the bracket 11 taken from the winding shaft 13 side, with the connecting shaft 30 being a cross section. As shown in FIGS. 2 and 3, a plate-shaped core member 38 is attached to the inside of the main body portion 19 of the winding shaft 13 by welding or the like. Are formed with a convex portion and a concave portion that engage with the concave portion 37A and the convex portion 37B of the boss member 37, and the winding shaft 13 and the connecting shaft 30 are circumferentially engaged by the engagement of the concave portion and the convex portion. It is connected to.

  Therefore, the end of the winding shaft 13 on the side of the bracket 11 is supported by the bracket 11 via the connecting shaft 30 and the bearing members 31 and 32, and the winding shaft 13 and the connecting shaft 30 are integrated. The connecting shaft 30 is a central axis of the winding shaft 13 on the bracket 11 side.

  As shown in FIGS. 2 and 3, an opening / closing device 40 serving as a driving device for rotating the winding shaft 13 is disposed on the inner surface of the bracket 11 facing the winding shaft 13. The arrangement of the opening / closing machine 40 on the bracket 11 is such that a plurality of support members 41 to 44 coupled to the bracket 11 and four in this embodiment, as shown in FIG. This is done by combining 40A.

  More specifically, the flange portion 40A of the opening / closing machine 40 is formed at the end of the main body portion 40B of the opening / closing machine 40 on the bracket 11 side, and the support members 41 to 44 are respectively The column 11 has a length extending in the axial direction of the take-up shaft 13, and one of the column members 41 to 44 has a column 41 as shown in FIG. A rod-like portion 41 </ b> A that further extends in the length direction of the take-up shaft 13 from the top of the winding shaft 13 is provided. After this rod-like portion 41A is inserted into the hole 45 formed in the flange portion 40A, a fastening tool 47 such as a screw inserted into the hole 46 of the flange portion 40A from the side opposite to the bracket 11 side is attached to another column. Screw into the respective screw holes 48 formed in the members 42 to 44. Thereby, the opening / closing machine 40 is attached to the bracket 11 by the support members 41 to 44, the rod-like portion 41 </ b> A, and the fastening tool 47.

  The attaching operation of the opening / closing device 40 to the bracket 11 is performed by inserting the rod-like portion 41A of the support column 41 into the hole 45 of the flange portion 40A and then inserting it into the hole 46 of the flange portion 40A from the side opposite to the bracket 11 side. Since the attachment 47 is screwed into the screw holes 48 of the support members 42 to 44, the screwing operation of the support members 47 to the screw holes 48 of the support members 47 is performed on the entire opening / closing device 40. Thus, the weight can be supported while being supported by the rod-shaped portion 41A of the support column 41. Therefore, the mounting operation of the switch 40 to the bracket 11 can be performed by one worker.

  The opening / closing machine 40 is composed of a combination of electric motor means and brake means. The rotation shaft of the electric motor means is a drive shaft 49 of the opening / closing device 40, and this drive shaft 49 cannot rotate when the brake means is turned on.

  A small-diameter drive sprocket wheel 50 is attached to the drive shaft 49 of the opening / closing machine 40, and the connecting shaft 30 is coupled to the connecting shaft 30 as shown in FIG. A large-diameter driven sprocket wheel 52 is attached via a thick plate-like base member 51, and a roller chain 53, which is an endless traveling member, is wound around the driving sprocket wheel 50 and the driven sprocket wheel 52. . For this reason, the winding shaft 13 and the opening / closing machine 40 are motively connected via the transmission shaft and the connecting shaft 30 composed of the sprocket wheels 50, 52 and the roller chain 53. The forward / reverse rotation is transmitted to the winding shaft 13.

  Of the left and right building housings 3 and 4 shown in FIG. 1, in one of the building housings 4, the shutter curtain 1 is opened and moved upward with respect to the entrance / exit 2, closed and moved downward, and stopped. An operating device 60 is attached to perform the above. The operation device 60 is provided with an “open” button, a “close” button, and a “stop” button.

  When the shutter plate 1 reaches the height position of the lintels 14 disposed on the ceiling member 6 as described above, or when the seat plate 17 has the lintels 14 and the floor 5 as shown in FIG. When the “close” button is operated when the shutter curtain 1 has reached a halfway position (half-open state), the control device (not shown) receives a signal from the “close” button. As the brake means 40 is turned off, the drive shaft 49 of the electric motor means rotates forward. As a result, the shutter curtain 1 is fed downward from the take-up shaft 13 due to the forward rotation of the drive shaft 49 and the normal rotation of the take-up shaft 13 due to the weight of the shutter curtain 1, and the shutter curtain 1 that is closed and moved thereby is When the plate 17 reaches the fully closed position where the floor 17 is landed, the brake device is turned on and the drive shaft 49 is rotated forward by the control device that receives a signal from a sensor (not shown) that detects the fully closed position. Stops. Further, when the shutter curtain 1 is fully closed or when the seat plate 17 reaches the midway position between the lintels 14 and the floor 5 as shown in FIG. When the “open” button is operated in the semi-closed state), the brake device is turned off and the drive shaft 49 rotates in the reverse direction by the control device that receives a signal from the “open” button. Due to the reverse rotation of the take-up shaft 13, the shutter curtain 1 is wound around the take-up shaft 13 and moves open. When the shutter curtain 1 reaches the fully open position, the brake device is turned on and the reverse rotation of the drive shaft 49 is stopped by the control device that receives a signal from a sensor (not shown) that detects the fully open position.

  Further, when the “stop” button is operated while the shutter curtain 1 is being closed and moved, the brake device is turned on and the drive shaft 49 is rotated forward by the control device that receives a signal from the “stop” button. Stops, the shutter curtain 1 stops at that position. Further, when the “stop” button is operated while the shutter curtain 1 is being opened and moved, the control device that receives a signal from the “stop” button turns on the brake means and reversely rotates the drive shaft 49. Stops, the shutter curtain 1 stops at that position.

  As shown in FIG. 3, a disk-like member 61 serving as a lateral deviation preventing means is attached to the connecting shaft 30 described above. The disk-shaped member 61 having a hole through which the connecting shaft 30 passes is provided in the center, and is a sheet metal press-formed product formed by press-molding a sheet metal. The disk-shaped member 61 is coupled to the connecting shaft 30. Since the disc-shaped member 61 is a sheet metal press-molded product, the disc-shaped member 61 is attached to the connecting shaft 30 with great strength. It is attached.

  By attaching the disk-shaped member 61 to the connecting shaft 30 in this way, the disk-shaped member 61 rotates integrally with the winding shaft 13 and the connecting shaft 30, and the connecting shaft 30 is connected to the winding shaft 13. Since the disk-shaped member 61 is disposed at the rotation center portion, the disk-shaped member 61 has a coaxial center portion N (see FIG. 4) with the winding shaft 13.

  As shown in FIG. 3, the disk-shaped member 61 according to the present embodiment includes a main body 61 </ b> A in which a coaxial center portion N with the winding shaft 13 is provided in the center, and an outer surface of the disk-shaped member 61. It consists of an inclined edge 61B formed on the peripheral edge and inclined obliquely to the opposite side of the winding shaft 13 side. Further, as shown in FIG. 4, the main body 61 </ b> A of the disk-shaped member 61 is formed with a round hole-shaped maintenance opening 62 that penetrates in the axial direction of the winding shaft 13 and the connecting shaft 30. In this embodiment, the maintenance opening 62 is formed at two locations opposite to each other with respect to the coaxial central portion N with the take-up shaft 13, and as described above. These maintenance openings 62 formed in the circumferential direction around the coaxial central portion N with the winding shaft 13 are formed at the same distance from the coaxial central portion N with the winding shaft 13. .

  Note that these maintenance openings 62 may be formed at different distances from the coaxial central portion N with the winding shaft 13.

  Further, as shown in FIG. 4, the radius R1 of the disc-shaped member 61 centering on the coaxial central portion N with the winding shaft 13 is when the shutter curtain 1 has reached the fully closed position described above. Is larger than the minimum winding radius R2 of the shutter curtain 1 at the winding shaft 13 in FIG. 2, but larger than the maximum winding radius R3 of the shutter curtain 1 at the winding shaft 13 when the shutter curtain 1 has reached the fully opened position described above. It is getting smaller.

  As can be seen from FIG. 4, the radius R <b> 1 of the disk-shaped member 61 is larger than the radius of the driven sprocket wheel 52 centering on the coaxial central portion N with the winding shaft 13. The radius R1 of the disk-shaped member 61 is larger than the radius of the winding shaft 13 that is arranged coaxially with the disk-shaped member 61.

  Further, the position of the main body portion 61A of the disk-shaped member 61 on the connecting shaft 30 is a disk-shaped disk that is a lateral deviation preventing means of the two left and right guide rails 7, 8, as can be seen by the one-dot chain line L in FIG. This corresponds to the maximum swallowing position of the shutter curtain 1 in the guide rail 8 on the side where the member 61 is disposed. That is, the guide rail 8, like the guide rail 7, has a channel shape in which an opening is formed on the surface of the take-up shaft 13, and the left and right end portions of the shutter curtain 1 are swallowed from the opening. The maximum amount of this squeezing is defined by the bottom 8A of the guide rail 8 in the left-right direction, and the position of the bottom 8A coincides with the position of the main body 61A of the disc-like member 61 on the connecting shaft 30 (connection). This includes the case where the disc-like members 61 are substantially matched due to an attachment error or the like on the shaft 30.)

  An upper end of the guide rail 8 is provided with an inclined guide portion 8B that rises from the bottom portion 8A and is inclined obliquely toward the side opposite to the winding shaft 13 side. Such an inclined guide portion is also provided in the guide rail 7.

  Of the two left and right brackets 10 and 11 that support the winding shaft 13, the bracket 11 has its own weight when the roller curtain 53 is cut, as shown in FIG. A shutter curtain rapid fall prevention device 70 is arranged for preventing the fall of the take-up shaft 13 by rotating it forward. The arrangement position of the device 70 is an inner surface facing the winding shaft 13 in the bracket 11 and is a position opposite to the winding shaft 13 with respect to the disk-shaped member 61.

  That is, the positional relationship among the winding shaft 13, the disk-shaped member 61, and the shutter curtain rapid fall prevention device 70 in the axial direction of the winding shaft 13 is such that the winding shaft 13 and the shutter curtain rapid fall prevention device 70 are disk-shaped. The positional relationship is such that the members 61 are arranged on opposite sides of the winding shaft 13 in the axial direction.

  2 and 3 show the shutter curtain rapid fall prevention device 70 omitted, and FIG. 4 shows the switch 40 and the winding shaft 13 omitted. 5 and 6 are side views of the bracket 11 viewed from the side of the take-up shaft 13 with the disc-like member 61 and the like omitted, and FIG. 5 shows the roller chain 53 before cutting. FIG. 6 shows the roller chain 53 after being cut.

  The shutter curtain rapid fall prevention device 70 includes a ratchet device 71 disposed on the bracket 11 outside the driven sprocket wheel 52, a switch 72, and a guard member 73. Among these components constituting the fall prevention device 70, a part is arranged on the bracket 11 within the range of the radius R <b> 1 of the disk-shaped member 61.

  That is, as shown in FIG. 5, the shutter curtain rapid fall prevention device 70 is disposed inside an endless roller chain 53 wound around the drive sprocket wheel 50 and the driven sprocket wheel 52 described above. The ratchet device 71, a switch 72 provided outside the roller chain 53 and provided with an actuator 72A, and arranged outside the roller chain 53. When the roller chain 53 is cut, the roller chain 53 jumps outside. Among these, as shown in FIG. 4, a part of the ratchet device 71 exists within the range of the radius R <b> 1 of the disk-shaped member 61.

  Further, the radius R1 of the disk-shaped member 61 is larger than the radius of the driven sprocket wheel 52 arranged coaxially with the disk-shaped member 61. Therefore, all of the radius R1 formed on the outer peripheral portion of the driven sprocket wheel 52 is set. The teeth 52 </ b> A (see FIGS. 5 and 6) are within the radius R <b> 1 of the disc-like member 61, and a part of the roller chain 53 is also within the radius R <b> 1 of the disc-like member 61.

  The ratchet device 71 includes a ratchet member 75 that is rotatable about a central shaft 74, a spring 76 that biases the pawl portion 75A of the ratchet member 75 toward the driven sprocket wheel 52, and a ratchet member. The base end portion is coupled to 75, the operating member 77 passes between the roller chain 53 and the bracket 11 and the front end portion reaches the outer side of the roller chain 53, and the ratchet member 75 has a base end portion such as a screw. It has a detection member 79 which is rotatably attached by a fastening tool 78 and detects the cutting of the roller chain 53. The detection member 79 is placed on the roller chain 53 from the take-up shaft 13 side, and the detection member 79 is hard at a portion facing the outer side surface of the roller chain 53. A friction reducing member 80 made of synthetic resin or the like is disposed.

  Since the detection member 79 is attached to the ratchet member 75 in which the claw portion 75A is urged to rotate toward the driven sprocket wheel 52 about the central shaft 74 by the spring 76, the normal detection member 79 is shown in FIG. 5, the friction force reducing member 80 is in contact with the outer side surface of the roller chain 53 by the spring force of the spring 76, and this contact causes the central shaft 74 of the ratchet member 75 to be moved by the spring 76. A rotation limit around the center is defined. At this time, the claw portion 75A of the ratchet member 75 is separated from the teeth 52A of the driven sprocket wheel 52.

  Since the detection member 79 at this time is in contact with the outer side surface of the roller chain 53 in the friction reducing member 80, the roller 79 is rotated by the rotation of the drive shaft 49 of the opening / closing device 40 in order to rotate the winding shaft 13. When the chain 53 travels, smooth running of the roller chain 53 can be ensured by the friction reducing action of the friction reducing member 80.

  When the wear amount of the friction reducing member 80 reaches a predetermined value and the friction reducing member 80 is replaced, the detecting member 79 is covered with the roller chain 53 from the winding shaft 13 side. Therefore, by removing the fastener 78 that rotatably attaches the detection member 79 to the ratchet member 75, an operation of attaching a new friction reducing member 80 to the detection member 79 can be easily performed. The operation of attaching the detection member 79 to the ratchet member 75 again with the fastening tool 78 can be easily performed.

  The ratchet device 71 is detachably secured to the bracket 11 with fasteners 81 to 83 such as three screws. As shown in FIG. 4, among these fasteners 81 to 83, the fastener 81 is a radius larger than the radius R <b> 1 centering on the coaxial central portion N with the winding shaft 13 described above. The other fasteners 82 and 83 are located at a radius smaller than the radius R1 centering on the coaxial central portion N with the winding shaft 13. Therefore, the fasteners 82 and 83 are located at the positions covered by the disk-shaped member 61 described above, in other words, the positions hidden by the disk-shaped member 61 when viewed from the winding shaft 13 side. Existing.

  As described above, the disk-shaped member 61 is formed with the maintenance opening 62, and the position of the maintenance opening 62 is a stop centered on the coaxial central portion N with the winding shaft 13. The position corresponds to the radial position of the attachments 82 and 83. Therefore, the disk-shaped member 61 is rotated together with the winding shaft 13 and the connecting shaft 30, and the orientation of the maintenance opening 62 with respect to the coaxial central portion N with the winding shaft 13 is set to the fastening tool 82 or the fastening tool 83. The fastening tool 82 and the fastening tool 83 can be placed inside the maintenance opening 62 by the same direction as that of the tool.

  According to the present embodiment described above, the curtain body portion 16 of the shutter curtain 1 is formed, and as described above, the slat 18 is in a state in which it can shift and move in the lateral direction that is the width direction of the shutter curtain 1. When the shutter curtain 1 is taken up by the take-up shaft 13 and is drawn and moved up and down in the vertical direction, the shutter curtain 1 may be laterally shifted. When the cause of this lateral displacement is the inclination of the winding shaft 13 with respect to the horizontal or the bending of the winding shaft 13, the slat 18 reaches the winding shaft 13 past the upper ends of the guide rails 7 and 8. Sometimes, when the slat 18 is wound around the winding shaft 13, the slat 18 is laterally displaced. For this reason, the slat 18 of the shutter curtain 1 when being wound around the winding shaft 13 is moved. There may be a side shift.

  However, according to the present embodiment, when the lateral displacement of the slat 18 occurs on the side of the bracket 11 where the shutter curtain rapid fall prevention device 70 is disposed, the bracket 11 includes a disk-shaped member that is a lateral displacement prevention means. 61 is arranged, the disc-like member 61 can prevent the slat 18 from excessively shifting laterally, in other words, the slat 18 shifting laterally until it interferes with the shutter curtain rapid fall prevention device 70. Thereby, it can prevent that the shutter curtain rapid fall prevention apparatus 70 is damaged. That is, the disk-shaped member 61 according to the present embodiment is for preventing the shutter curtain rapid fall prevention device 70 from being damaged by the laterally displaced slats 18.

  In particular, as can be seen from FIG. 4, the claw portion 75A of the ratchet member 75 constituting the shutter curtain rapid fall prevention device 70 is disposed at a position within the radius R1 of the disc-like member 61. Of the fall prevention device 70, the claw portion 75A of the ratchet member 75, which is an important member, can be effectively protected from the laterally displaced slats 18.

  In addition, since the disk-shaped member 61 which is a lateral deviation prevention means in this embodiment is for protecting the shutter curtain rapid fall prevention device 70 arrange | positioned at the bracket 11 as mentioned above, in this embodiment, The disc-like member 61 is not arranged on the side of the bracket 10 opposite to the left and right sides of the bracket 11, but a lateral deviation preventing means similar to the disc-like member 61 or a lateral deviation preventing means different from the disc-like member 61 is used. The bracket 10 and the members disposed on the bracket 10 may be disposed on the bracket 10 side according to the necessity of protecting the bracket 10 and the members disposed on the bracket 10.

  Further, according to the present embodiment, since the disk-shaped member 61 is disposed on the connecting shaft 30 that rotates integrally with the winding shaft 13 as described above, the disk-shaped member 61 is also integrated with the winding shaft 13. Therefore, even if the laterally displaced slat 18 of the shutter curtain 1 wound around the winding shaft 13 comes into contact with the disk-shaped member 61, the slat 18 is moved to the winding shaft 13, the connecting shaft 30, and By rotating integrally with the disk-shaped member 61, it is possible to prevent rubbing between the slat 18 and the disk-shaped member 61.

  Further, according to the present embodiment, the outer peripheral edge portion of the disk-shaped member 61 is an inclined edge portion 61B that is inclined obliquely toward the opposite side of the winding shaft 13 with respect to the main body portion 61A. While the slat 18 passes the upper end of the guide rails 7 and 8 and reaches the take-up shaft 13, the slat 18 moves laterally toward the bracket 11 beyond the position of the main body 61 </ b> A. When the amount is equal to or smaller than the amount of 61B in the left-right direction, the inclined edge portion 61B serves as a guide portion, and the slat 18 can be moved to the winding shaft 13 side.

  Further, since the inclined edge portion 61B has a width dimension in the left-right direction, the strength in the left-right direction of the disk-like member 61 is improved by the inclined edge portion 61B. The slat 18 that is prevented from being excessively displaced by striking from the take-up shaft 13 side can be effectively received by the disk-shaped member 61 having high strength.

  Further, when the slat 18 within the vertical dimension of the guide rails 7 and 8 is laterally displaced in the left-right direction due to vibration caused by the opening / closing movement of the shutter curtain 1, the excessive lateral displacement of the slats 18 is Are prevented by the bottom in the left-right direction (the bottom 8A of the guide rail 8 is shown in FIG. 3). Further, while the slat 18 reaches the upper end of the guide rails 7 and 8 from the take-up shaft 13, the lateral displacement of the guide rails 7 and 8 exceeds the position of the bottom in the left and right direction. In the case where the amount is the same as or smaller than the amount in the left-right direction of the inclined guide portions provided on 7 and 8 (the inclined guide portion 8B of the guide rail 8 is shown in FIG. 3), The inclined guide portion serves as a guide portion, and the slat 18 can be corrected and moved toward the winding shaft 13.

  Further, as described above, the position of the main body portion 61A of the disk-shaped member 61 is the guide on the side where the disk-shaped member 61, which is a lateral deviation prevention means, is disposed between the two left and right guide rails 7,8. Since it corresponds to the maximum swallowing position of the shutter curtain 1 in the rail 8 (the position of the bottom portion 8A of the guide rail 8), the lateral displacement allowable position of the slat 18 defined by the bottom portion 8A of the guide rail 8 and the disc-like member 61 The lateral displacement allowable position of the slat 18 on the specified winding shaft 13 can be matched.

  Further, it is possible to prevent the slat 18 of the shutter curtain 1 from being excessively displaced when being wound around the winding shaft 13 even if the disk-shaped member 61 is disposed on the winding shaft 13. When the disk-shaped member 61 is arranged on the winding shaft 13 in this way, a process for attaching the disk-shaped member 61 to the winding shaft 13 is added in the production process of the winding shaft 13. According to the embodiment, inconvenience that the production work of the entire take-up shaft 13 cannot be performed as a continuous work occurs. However, in the present embodiment, the disk-like member 61 is disposed on the bracket 11 via the connecting shaft 30, so that the factory In this case, when the work for placing the connecting shaft 30 on the bracket 11 is performed, the work for placing the disk-shaped member 61 can also be performed. Therefore, work related to the placement of the disk-shaped member 61 can be easily performed.

  Further, at the construction work site of the shutter device, as shown in FIG. 3, the boss member 37 coupled to the connecting shaft 30 and the core member 38 of the winding shaft 13 are connected to the boss member 37 and the center. The engagement between the concave portion and the convex portion formed in the child member 38 makes it possible to easily connect, so that the winding shaft 13 and the connecting shaft 30 can be easily connected.

  In the present embodiment, as described with reference to FIG. 4, the radius R1 of the disc-like member 61 centering on the coaxial central portion N with the winding shaft 13 is such that the shutter curtain 1 reaches the fully closed position. Larger than the minimum winding radius R2 of the shutter curtain 1 at the winding shaft 13 at the time, but smaller than the maximum winding radius R3 of the shutter curtain 1 at the winding shaft 13 when the shutter curtain 1 reaches the fully open position. For this reason, the disk-shaped member 61 is made smaller and lighter than the case where the radius of the disk-shaped member 61 centered on the coaxial central portion N is the same as or larger than the radius R3. can do. An excessive lateral shift occurs in the slat 18 existing between the radius R2 and the radius R3. When the slat 18 is guided by the guide rails 7 and 8 and moves up and down, the bottom portions of the guide rails 7 and 8 are moved. Can be prevented.

  When the shutter device according to the present embodiment is used for a long period of time and the number of times of opening and closing the shutter curtain 1 has reached a large number of times, the roller chain 53 described above may be broken due to, for example, metal fatigue. FIG. 6 shows a case where this cutting has occurred. As described with reference to FIG. 5, the ratchet device 71 of the shutter curtain rapid fall prevention device 70 includes the detection member 79 in which the friction reducing member 80 contacts the outer side surface of the roller chain 53 by the spring force of the spring 76. When the chain 53 is cut, the detection member 79 rotates about the central shaft 74 by the spring force of the spring 76, and the ratchet member 75 to which the detection member 79 is attached also rotates about the central shaft 74. Due to this rotation, the pawl portion 75A of the ratchet member 75 is engaged with the teeth 52A of the driven sprocket wheel 52 that is a member that rotates integrally with the winding shaft 13.

  For this reason, even if the roller chain 53 is cut and the connection between the drive sprocket wheel 50 and the driven sprocket wheel 52 coupled to the drive shaft 49 of the opening / closing device 40 is disconnected, the winding shaft 13 and The ratchet device 71 prevents the driven sprocket wheel 52 from rotating due to its own weight, thereby preventing the shutter curtain 1 from rotating rapidly by rotating the winding shaft 13 with its own weight. Further, when the ratchet member 75 rotates about the central shaft 74, the operating member 77 coupled to the ratchet member 75 operates the actuator 72 </ b> A of the switch 72. An informing means (not shown) for informing that 53 has been disconnected operates.

  When the roller chain 53 is cut as described above, an operation of replacing the cut roller chain 53 with a new roller chain 53 is performed. When the detecting member 79 is rotated back about the central shaft 74 in order to bring the friction reducing member 80 into contact with the outer side surface of the replaced new roller chain 53, the pawl portion 75A of the ratchet member 75 is moved to the driven sprocket. It leaves | separates from the tooth | gear 52A of the wheel 52. FIG.

  For example, when the ratchet device 71, which is the component of the ratchet member 75, is removed from the bracket 11 or replaced due to damage to the claw portion 75 </ b> A of the ratchet member 75, With the forward rotation of the drive shaft 49, the winding shaft 13 is rotated forward to lower the shutter curtain 1 to the fully closed position, and then the upper end of the shutter curtain 1 is fixed to the winding shaft 13. The fastening tool is removed, and the winding shaft 13 and the shutter curtain 1 are separated. As a result, the winding shaft 13 that can be freely rotated is manually rotated or the like, and the position of the maintenance opening 62 formed in the disk-like member 61 that rotates integrally with the winding shaft 13 is changed to a ratchet. The device 71 is fixed to the bracket 11 and is sequentially matched with the positions of the fixing device 82 and the fixing device 83 existing in the range of the radius R1 of the disk-like member 61, and these fixing devices. 82 and 83 are removed using a tool inserted into the maintenance opening 62 from the winding shaft 13 side, and the fastener 81 existing outside the radius R1 is also removed. Thereby, the work of removing or replacing the ratchet device 71 from the bracket 11 can be performed.

  As described above, in the present embodiment, even if the disc-like member 61 serving as a lateral deviation preventing means is disposed between the winding shaft 13 and the shutter curtain rapid fall prevention device 70, the disc-like member 61 is formed. The ratchet device 71, which is a maintenance work for the shutter curtain rapid fall prevention device 70, is removed from the bracket 11 by the work from the side of the take-up shaft 13 by the maintenance opening 62. Will be able to do work. In addition, since a plurality of maintenance openings 62 are formed in the circumferential direction of the disk-shaped member 61, the disk-shaped member 61 is rotated in order to remove or replace the ratchet device 71 from the bracket 11. The amount of rotation to be moved can be reduced.

  The formation of the maintenance opening 62 in the disk-shaped member 61 serving as a lateral slip prevention means can be performed even when the disk-shaped member 61 is disposed on the take-up shaft 13, and the maintenance opening. The discrepancy preventing means for providing the disc-shaped member 61 may be a member or means of any form other than the disc-shaped member 61.

  INDUSTRIAL APPLICABILITY The present invention can be used for a shutter device in which the curtain constituent member of the shutter curtain may be laterally displaced.

FIG. 1 is a front view showing an entire shutter device according to an embodiment of the present invention. FIG. 2 is a partially broken view showing an enlarged portion of the bracket which is the two left and right support members shown in FIG. 1, and is a front view showing the winding shaft and the like in cross section. Is FIG. 3 is a front view showing the periphery of the bearing member in the connecting shaft shown in FIG. 2 in section. 4 is a side view of the right side bracket shown in FIGS. 1 and 2 as viewed from the winding shaft side, with the section of the connecting shaft shown in FIGS. 2 and 3 as a cross section. FIG. 5 is a side view of the right bracket shown in FIGS. 1 and 2 as seen from the winding shaft side as in FIG. 4, and the disk-like member shown in FIG. 4 is omitted. FIG. 5 is a view showing a state before the roller chain shown in FIG. 4 is cut. FIG. 6 is a view similar to FIG. 5 showing the roller chain after cutting.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shutter curtain 7, 8 Guide rail 10, 11 Bracket which is a supporting member 13 Winding shaft 18 Slat which is a curtain constituent member 30 Connecting shaft 61 Disc-like member which is a lateral displacement prevention means 61A Disc-like member main body 61B Disc-like member Inclined edge 62 Maintenance opening 70 Shutter curtain rapid fall prevention device N Coaxial center with take-up shaft

Claims (9)

A winding shaft that rotates for winding and unwinding the shutter curtain, two left and right support members that support both ends of the winding shaft, and an excessive amount of curtain constituent members that constitute the shutter curtain. In the lateral displacement prevention device for the curtain constituent member in the shutter device comprising the lateral displacement prevention means for preventing lateral displacement,
The lateral shift prevention means is disposed on at least one of the two left and right support members ;
The one support member is provided with a connecting shaft that is connected to the winding shaft and rotates integrally with the winding shaft, and the lateral slip prevention means is attached to the connecting shaft, and the winding shaft The drive from the drive device is transmitted to the connecting shaft by transmission means including a driven sprocket wheel attached to the connecting shaft,
The connecting shaft is rotatably supported by two bearing members that are held in the axial direction of the connecting shaft by the one supporting member,
The lateral slip prevention means is disposed on the connecting shaft on the winding shaft side with respect to the two bearing members, and the driven sprocket wheel is disposed on the connecting shaft between the two bearing members. An apparatus for preventing a lateral displacement of a curtain constituent member in a shutter device. 2. The apparatus of claim 1, wherein the winding shaft and the connecting shaft are connected in the circumferential direction by engagement of a concave portion and a convex portion. An apparatus for preventing a lateral deviation of a curtain constituent member in the apparatus. 3. The apparatus for preventing lateral deviation of a curtain constituent member in a shutter device according to claim 1 , wherein the lateral deviation preventing means is formed by a disk-shaped member having a central portion coaxial with the winding shaft. An apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device. 4. The apparatus for preventing lateral displacement of a curtain constituent member in a shutter device according to claim 3, wherein the bearing member on the take-up shaft side of the two bearing members is held by a holding member attached to the one supporting member. The disk-shaped member is a part of the holding member and has a larger diameter than a portion disposed between the disk-shaped member and the driven sprocket wheel. An apparatus for preventing a lateral displacement of a curtain constituent member in a shutter device. 5. The apparatus for preventing lateral deviation of a curtain constituent member in a shutter device according to claim 3 or 4, wherein the disc-like member has a larger diameter than the driven sprocket wheel arranged coaxially with the disc-like member. An apparatus for preventing a lateral displacement of a curtain constituent member in a shutter device. 6. The apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device according to claim 3, wherein the shutter curtain is guided by two left and right guide rails to open and close, and the disc-like member is the winding member. A main body portion having a central center coaxial with the shaft, and an inclined edge formed on the outer peripheral edge portion of the disk-shaped member and inclined obliquely from the main body portion to the side opposite to the winding shaft side And the position of the main body in the axial position of the winding shaft is the guide rail on the guide rail on the side where the disk-shaped member is arranged, of the two left and right guide rails. The apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device, characterized by corresponding to a maximum swallowing position of the shutter curtain. 7. The lateral displacement prevention device for a curtain constituent member in the shutter device according to claim 1 , wherein the lateral displacement prevention means is formed with a maintenance opening penetrating in an axial direction of the winding shaft. An apparatus for preventing a lateral displacement of a curtain constituent member in a shutter device. 8. The apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device according to claim 7 , wherein the one supporting member includes a rapid movement of the shutter curtain on a side opposite to the winding shaft side with respect to the lateral deviation preventing means. A device for preventing a lateral deviation of a curtain constituent member in a shutter device, characterized in that a shutter curtain rapid fall prevention device for preventing a fall is arranged. The apparatus for preventing lateral displacement of a curtain constituent member in a shutter device according to any one of claims 1 to 8 , wherein the shutter curtain has a slat connecting portion in which a plurality of slats are vertically connected. An apparatus for preventing a lateral deviation of a curtain constituent member in a shutter device, wherein the curtain constituent member in which excessive lateral deviation is prevented by a prevention means is the slat forming the slat connecting portion.

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