Winding device and opening / closing device

Abstract

To provide a winding device or the like provided with a rotating body configured to reduce stress concentration at a part where a connecting member and a wheel are fixed.SOLUTION: A winding device includes a shaft, a plurality of wheels rotatably provided on the shaft, a plurality of connecting members, and a rotating body consisting of the plurality of connecting members and the plurality of wheels. Each wheel 6 includes a circular substrate 60, a central through hole, a plurality of peripheral edge-side through holes, and an opening / closing body connection portion, the shaft is provided to pass through the central through holes of the plurality of wheels for causing the plurality of connecting members 7 to pass through the peripheral edge-side through holes of each wheel. The winding device includes a reinforcing member 8 provided so as to extend in a direction along the central axis of each connecting member from the peripheral edge side of the peripheral edge-side through hole on at least one plate surface of both plate surfaces of the circular substrate of each wheel, and the connecting member 7 and the wheel 6 are fixed by welding via the reinforcing member 8.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a winding device that winds up an opening / closing body for opening and closing an opening, and an opening / closing device including the winding device. [Background technology]

[0002] 2. Description of the Related Art There are known opening / closing bodies (shutter curtains) for opening and closing openings formed in building structures and the like, and opening / closing devices (shutter devices) equipped with a winding device for winding up the opening / closing bodies (see Patent Document 1, etc.). The winding device is configured with a shaft, a number of wheels rotatably mounted on the shaft with the central axis (center line) of the shaft as the center of rotation, a number of connecting members connecting the wheels to each other, and a rotating body constituted by the wheels and the connecting members. In the winding device, for example, as shown in FIG. 8 of Patent Document 1, wheels are disposed on at least both end sides of a shaft, and a rotating body is formed by connecting a plurality of these wheels with a plurality of connecting members. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-73788 A Summary of the Invention [Problem to be solved by the invention]

[0004] The rotating body of the conventional winding device described above is configured by using multiple rod-shaped members, such as long flat plates (flat bars) or circular tubes, as connecting members, which are fitted into and passed through peripheral through holes for connection formed in the wheel, and the connecting members and the wheel are fixed using a fixing means such as welding. However, in the configuration of the rotating body of the winding device, the fixed parts between the connecting member and the wheel are concentrated around the connecting through hole, which causes stress to easily concentrate at the fixed parts between the connecting member and the wheel, making it easier for the connecting member to bend, etc. For example, when the fixed portion between the connecting member and the wheel is constructed by welding as a fixing means, the welded portion that forms the fixed portion is limited to around the edge of the peripheral through hole, which causes stress to easily concentrate at the welded portion, resulting in a problem that bending or the like can easily occur in the connecting member.

[0005] In order to solve the above problem, the present invention provides a winding device having a rotating body configured to reduce stress concentration at the fixed portion between the connecting member and the wheel, and an opening and closing device having the winding device. [Means for solving the problem]

[0006] The winding device of the present invention is a winding device that winds up an opening / closing body for opening and closing an opening, and comprises a shaft, a plurality of wheels that are rotatably mounted on the shaft with the central axis of the shaft as the center of rotation, a plurality of connecting members that connect the plurality of wheels to each other, and a rotating body constituted by the plurality of wheels and the plurality of connecting members, wherein the wheel comprises a circular substrate, a central through hole formed in the center of the circular substrate, a plurality of peripheral side through holes formed at a predetermined interval along the circumferential direction on the peripheral portion of the circular substrate, and an opening / closing body connection portion to which one end side of the opening / closing body is connected, the shaft passes through the central through holes of the plurality of wheels, the plurality of wheels are arranged at intervals along the central axis of the shaft, and a plurality of connecting members that are arranged to extend along the central axis of the shaft are arranged to pass through the peripheral side through holes of each wheel, and the winding device is characterized in that it comprises a reinforcing member that is provided to extend from the peripheral side of the peripheral side through hole on at least one of both plate surfaces of the circular substrate of the wheel in a direction along the central axis of the connecting member, and the connecting member and the wheels are fixed by welding via the reinforcing member. In addition, the reinforcing member and the wheel are fixed by welding. In addition, the connecting member is composed of a circular tube having a circular cross-section, and the reinforcing member is a reinforcing member with a recess having a recess extending in a direction along the central axis of the circular tube constituting the connecting member, and the inner surface of the recess of the reinforcing member with a recess and the outer peripheral surface of the circular tube are fixed by welding. In addition, the connecting member is composed of a circular tube having a circular cross-section, and the reinforcing member is a reinforcing member with a curved surface having a curved inner surface and a curved outer surface corresponding to the curvature of the outer peripheral surface of the circular tube constituting the connecting member, and the curved inner surface of the reinforcing member with a curved surface and at least a portion of the outer peripheral surface of the circular tube are fixed together by welding. The connecting member is also characterized in that it includes a reinforcing member with a recess having a recess extending in a direction along the central axis of the circular pipe that constitutes the connecting member, the reinforcing member with recess and the wheel are fixed by welding, the inner surface of the recess of the reinforcing member with recess and the outer peripheral surface of the circular pipe are fixed by welding, and the inner surface of the recess of the reinforcing member with recess and the curved outer surface of the reinforcing member with curved surface are fixed by welding. The connecting member is constructed of a circular tube with a circular cross-section, and the reinforcing member is a reinforcing member with a recess having a recess extending from the peripheral side of the peripheral side through hole on one of the two plate surfaces of the circular base plate of the wheel in a direction along the central axis of the circular tube constituting the connecting member, and the inner surface of the recess of the reinforcing member with recess and the outer peripheral surface of the circular tube are fixed by continuous welding in a direction along the central axis of the circular tube, and the outer peripheral surface of the circular tube is fixed by welding to the peripheral side of the peripheral side through hole on the other of the two plate surfaces of the circular base plate of the wheel. According to the winding device of the present invention, it is possible to provide a winding device having a rotating body configured to reduce stress concentration at the fixed portion between the connecting member and the wheel. The winding device according to the present invention comprises a drive unit having a drive source fixed to a shaft, an output gear provided on the tip side of a rotating shaft rotated by the drive source, and an internal gear portion provided to mesh with the output gear, the internal gear portion being configured to include an internal gear member and a diameter expansion torque transmission member, the internal gear member being configured to include an annular plate, and an internal gear being formed on the hole circumferential surface of a central through hole of the annular plate, the diameter expansion torque transmission member being configured to include an annular plate having an outer diameter dimension larger than the outer diameter dimension of the annular plate of the internal gear member, and a torque transmission portion for transmitting rotational torque to a connecting member on the outer circumferential side of the annular plate, The internal gear member is provided so that the central axis of the annular plate constituting the internal gear member coincides with the central axis of the shaft, and the diameter expansion torque transmission member is attached to the internal gear member so that the center of the annular plate constituting the internal gear member coincides with the center of the annular plate constituting the diameter expansion torque transmission member to form an internal gear portion, and the torque transmission portion of the diameter expansion torque transmission member is connected to the connecting member, so that by rotating the output gear, the internal gear portion rotates around the central axis of the shaft as the rotation center, and the rotational force of the internal gear portion is transmitted to the connecting member to rotate the rotating body. According to this winding device, in addition to the effect of reducing stress concentration at the fixed portion between the connecting member of the rotating body and the wheel as described above, it is possible to accommodate larger diameters of the rotating body, and it is now possible to provide a spring-combined winding device that is equipped with a rotating body that is highly rigid and does not easily bend, making it suitable for installation in openings with a width dimension of approximately 4000 mm or more. In addition, the shaft is constructed from a hollow tube with a circular cross section, the drive source is fixed to a shaft portion located between a one-end wheel provided on one end of the shaft and the second wheel located from the one end to the other end, a wiring inlet hole is provided in the shaft portion near the one-end wheel, and wiring including a power line of the drive source and a control signal line of a control component for controlling the drive source are drawn into the shaft through the wiring inlet hole and drawn to the outside from the opening at one end of the shaft.In addition to the effect of reducing stress concentration at the fixed portion between the connecting member of the rotor and the wheel described above, a spring-combined winding device can be provided that has a rotor that is highly rigid and does not easily bend, and is suitable for installation in an opening with a width dimension of approximately 4000 mm or more. The wheel further comprises a rotating cylinder configured to extend from a circular through hole constituting a central through hole in a direction along the central axis of the circular through hole, the rotating cylinder comprising a bearing and a bearing cover, the bearing cover being configured by combining an annular bottom plate portion having a central through hole for passing a shaft therethrough, and a cylindrical portion provided so as to extend from the outer circumferential edge of the annular bottom plate portion in a direction along the central axis of the annular bottom plate portion, the bearing comprising a bearing accommodating portion constituted by the cylindrical portion and the annular bottom plate, the bearing being disposed on one of both plate surfaces of the circular base plate of the wheel such that the central axis of the bearing coincides with the central axis of the circular through hole of the wheel, and the bearing of the bearing cover The bearing is accommodated in the accommodation section, and the extended end side of the cylindrical portion of the bearing cover is fixed to one plate surface of the circular base plate of the wheel so that the central axis of the annular bottom plate portion of the bearing cover coincides with the central axis of the circular through hole of the wheel. This not only reduces stress concentration at the fixed portion between the connecting member of the rotating body and the wheel as described above, but also improves the durability of the rotating body by incorporating a bearing and constructing a rotating cylindrical body with a bearing cover of a simple configuration, making the rotating body less likely to bend. It also makes it possible to simplify the rotating body, reduce costs and make it lighter. This makes it possible to provide a spring-combined winding device suitable for installation in openings with a width dimension of approximately 4000 mm or more. The bearing cover further includes a one-side boss formed of a cylinder extending from the edge of the central through hole in the annular bottom plate portion of the bearing cover, and a other-side boss formed of a cylinder extending from the edge of the circular through hole on the other of the two plate surfaces of the circular base plate of the wheel, and the shaft is configured to pass through the one-side boss, the bearing hole of the bearing, the central through hole in the annular bottom plate portion of the bearing cover, and the other-side boss, making the rotating body less likely to bend and further improving the durability of the rotating body. The torsion coil spring further includes a shaft penetrating the hollow portion of the spiral of the torsion coil spring and the central through hole of a wheel, one end of the torsion coil spring being fixed to the shaft and the other end of the torsion coil spring being fixed to the wheel, a boss formed of a cylindrical body extending beyond the edge of the central through hole of the wheel, a split pin penetrating the shaft so as to intersect with the central axis of the shaft, and a plurality of dry met washers being provided between the split pin and the extended end of the boss of the wheel, so that in addition to the effect of reducing stress concentration at the fixed portion between the connecting member of the rotor and the wheel as described above, the effect of preventing lateral displacement of the rotor can be improved, and the effect of suppressing wear of the washer and the split pin due to the rotation of the rotor can be improved, so that the rotor is less likely to bend and the durability of the rotor can be improved. Therefore, a spring-combined winding device can be provided that includes a rotor that is highly rigid and less likely to bend, suitable for installation in an opening with a width of about 4000 mm or more. The opening and closing device of the present invention is an opening and closing device equipped with an opening and closing body that opens and closes an opening, and is characterized in that it comprises the winding device of the present invention described above, a left bracket to which the left end of the shaft of the winding device is fixed, a right bracket to which the right end of the shaft of the winding device is fixed, an opening and closing body one end side of which is attached to the opening and closing body connection portion of the wheel of the winding device, and a guide rail having guide grooves that guide the left and right widthwise ends of the opening and closing body along the opening and closing direction of the opening and closing body. In addition, one end of the opening / closing body and the opening / closing body connection part of the wheel of the winding device are connected via a hanging member, and the hanging member is characterized in that it is equipped with a cushioning member at the part that comes into contact with the opening / closing body that is wound around the rotating body.Since the opening / closing body main body comes into contact with the cushioning member of the hanging member, the surface of the opening / closing body main body is less likely to be scratched, and the aesthetic appearance of the opening / closing body main body can be maintained for a long period of time. Furthermore, since a cushioning material is provided on the surface of the opening / closing body connection part of the wheel of the winding device, the opening / closing body main body comes into contact with the cushioning material on the wheel surface, making it difficult for the surface of the opening / closing body main body to be scratched, and the aesthetic appearance of the opening / closing body main body can be maintained for a long period of time. In addition, the guide rail is characterized by comprising an upper guide rail positioned above the dirt floor, a lower guide rail whose lower end is embedded in the dirt floor, and a connecting member that detachably connects the lower end of the upper guide rail and the upper end of the lower guide rail.This makes it possible to remove the upper guide rail during maintenance such as when replacing the opening / closing body, thereby providing an opening / closing device with excellent maintainability. In addition, the connecting member connects the plate surface of the lower end of the upper guide rail and the plate surface of the upper end of the lower guide rail so that they are continuously positioned on the same plane, thereby improving the design of the guide rails. In addition, the guide rail comprises a guide rail component and an attachment portion that is attached to the building's structure, and the attachment portion is configured in a shape that does not interfere with the foundation provided below the structure.By configuring the guide rail component and the attachment portion as a single unit, the number of parts can be reduced, improving the workability of installing the guide rail on the building's structure and improving the design of the guide rail. [Brief description of the drawings]

[0007] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] 8A is a perspective view showing the relationship between a wheel, a connecting member, and a reinforcing member, and FIG. 8B is a perspective view showing reinforcing members 8A and 8B with recesses. [Figure 4] 10A to 10D are diagrams showing the relationship between a wheel, a connecting member, and a reinforcing member, in which (a) is a front view, (b) is an enlarged view of a main portion of (a), (c) is a rear view, and (d) is an enlarged view of a main portion of (c). [Diagram 5] (a) is a plan view showing the shaft, (b) is a front view showing the rotor, and (c) is a right side view of (b) (right side view of the rotor). [Figure 6] 1A to 1C are diagrams showing a wheel 6A, in which (a) is a front view, (b) is a cross-sectional view taken along line AA of (a), and (c) is a right side view. [Figure 7] 13A, 13B, and 13C are diagrams showing a wheel 6B, in which (a) is a front view, (b) is a right side view, and (c) is a rear view. [Figure 8] 7A and 7B are diagrams showing a wheel 6B, in which (a) is a cross-sectional view taken along line AA in FIG. 7A, and (b) is a perspective view. [Figure 9] FIG. [Figure 10] FIG. 4 is a perspective view showing a welded portion between a connecting member and a reinforcing member. [Figure 11] FIG. 4 is a plan view showing a welded portion between the connecting member, the reinforcing member, and the wheel. [Figure 12] (a) is a front view showing the internal gear section, and (b) is a right side view of the internal gear section. [Figure 13] FIG. 4 is a front view showing a diameter expansion torque transmission member; [Figure 14] 1A to 1C are diagrams showing a wheel 6C, where (a) is a front view, (b) is a right side view, and (c) is an AA cross-sectional view of (a). [Figure 15] 4A to 4C are diagrams showing a bearing cover assembly, in which (a) is a front view, (b) is a right side view, and (c) is an AA cross-sectional view of (a). [Figure 16] FIG. 4 is an enlarged view showing the relationship between the split pin and the drymet washer. [Figure 17] FIG. 4 is a diagram showing a manner in which the wheel and the suspension member are connected to each other. [Figure 18] 4A to 4C are diagrams showing the opening / closing body and the hanging member, in which (a) is a front view, (b) is a right side view, and (c) is a diagram showing the connection between the hanging member and the opening / closing body. [Figure 19]FIG. 4 is a diagram showing the hanging member, where (a) is a front view and (b) is a right side view. [Figure 20] FIG. [Figure 21] FIG. [Figure 22] 1A is a plan view of a guide rail, FIG. 1B is a cross-sectional view taken along line AA of FIG. 1C, FIG. 1C is a front view, and FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] EMBODIMENT 1 First, an overview of an opening and closing device including a winding device according to the first embodiment will be described. As shown in FIG. 1, an opening / closing device (shutter device) 1 includes an opening / closing body 2, a winding device 3 for the opening / closing body 2, a shutter case 4, and a guide rail 5. In the description of the opening and closing device 1 shown in FIG. 1, the directions of up, down, left, and right are defined as those shown in FIG.

[0009] The opening / closing body 2 comprises an opening / closing body main body 20 and an other end component member 21 provided at the other end (lower end) of the opening / closing body main body 20, and one end (upper end) is connected to an opening / closing body connection part 63 of the winding device 3 described later via a connecting member called a hanging point not shown in the figure, and is configured to open and close an opening 10 formed in an architectural structure, etc. The opening / closing body 2 is called, for example, a shutter curtain. The opening / closing body 20 is called, for example, a slat curtain. The other end component 21 is called, for example, a seat plate or a water drain. The term "architectural structure" refers to so-called buildings such as detached houses, apartment buildings, buildings, warehouses, factories, etc., exterior structures such as garages, carports, gates, and walls, and structures such as tunnels and underground shopping malls.

[0010] The shutter case 4 is a case for accommodating the winding device 3 and the opening / closing body 2 wound around the winding device 3, and is attached to a body 11 located above the opening 10, for example.

[0011] The left and right guide rails 5, 5 are installed, for example, on a main body 11 positioned on the left and right of the opening 10, and are configured to have guide grooves 5a that guide the left and right widthwise (left-right) ends 22, 22 of the opening / closing body 2 along the opening / closing direction (up-down direction) of the opening / closing body 2.

[0012] Next, the winding device 3 according to the first embodiment will be described. The winding device 3 is a device that winds up the opening / closing body 2 of the opening / closing device 1 for opening and closing the opening 10 described above. As shown in FIG. 2, the winding device 3 is configured to include a shaft 30, a plurality of wheels 6, 6... that are rotatably mounted on the shaft 30 with a central axis (center line) 30C of the shaft 30 as the center of rotation, a plurality of connecting members 7, 7... that connect the plurality of wheels 6, 6..., a rotating body 31 formed by the plurality of wheels 6, 6... and the plurality of connecting members 7, 7..., a rotational force imparting means 32 that imparts a rotational force to the rotating body 31, and a reinforcing member 8. That is, the winding device 3 has a configuration in which a rotor 31 shown in FIG. 5(b) is provided rotatably around a central axis 30C of a shaft 30 shown in FIG. 5(a). The rotating body 31 is formed, for example, by six wheels 6, 6... (see Figure 5(b)) arranged at a predetermined interval in a direction along the central axis 30C of the shaft 30 and connected by three connecting members 7, 7... (see Figure 3(a)), and is formed in a cylindrical cage shape having a hollow portion with a circular cross-section extending in the direction along the central axis 30C of the shaft 30. FIG. 3(a) is a perspective view illustrating the third wheel 6A(6) from the left of the rotating body 31 shown in FIG.

[0013] As shown in FIG. 1, a left end 30L of the shaft 30 of the winding device 3 is fixed to a left bracket 40L, and a right end 30R of the shaft 30 of the winding device 3 is fixed to a right bracket 40R. The left bracket 40L and the right bracket 40R are attached to the frame 11 located above the opening 10, for example. One end of the opening / closing body 2 is connected to the opening / closing body connection part 63, and the rotational force imparting means 32 is configured to rotate the rotating body 31 around the central axis 30C of the shaft 30 as the center of rotation, thereby forming an opening / closing device 1 capable of opening and closing the opening 10 using the opening / closing body 2.

[0014] In the case of an electrically-operated type, the rotational force imparting means 32 is composed of a motor (not shown) as a driving source for rotating the rotating body 31 in the winding direction of the opening / closing body 2 and the unwinding direction of the opening / closing body 2, and a power transmission mechanism such as gears or belts (not shown) for transmitting the rotational force of the motor to the rotating body 31. In the case of a manual type, the rotational force applying means 32 is constituted by a spring or the like for rotating the rotating body 31 in the winding direction of the opening / closing body 2.

[0015] In the winding device 3 shown in FIG. 2, the rotational force applying means 32 includes a drive unit 32A and a spring 32B that apply a rotational force to the rotor 31, as an example. That is, Figure 2 illustrates a winding device 3 that is configured to enable the opening and closing operation of the opening and closing body 2 to be performed electrically, as well as to enable the opening and closing operation of the opening and closing body 2 to be performed manually, for example, during a power outage, i.e., a rotational force imparting means 32 that combines a drive source and a spring. In the case of the winding device 3 shown in Figure 2, the drive unit 32A is composed of, for example, a drive gear wheel portion 33 connected to the connecting member 7 and rotatable around the central axis 30C of the shaft 30 as the center of rotation, a motor (not shown) as a drive source, and a power transmission mechanism (not shown) that transmits the rotational force of the motor to the drive gear wheel portion 33. 2, the torsion coil spring is provided so that the shaft 31 passes through the hollow portion of the spiral of the torsion coil spring, and one end 32a of the torsion coil spring is fixed to the shaft 31, while the other end 32b of the torsion coil spring is fixed to a predetermined wheel 6. According to the opening / closing device 1 equipped with the winding device 3 configured in this manner, the opening / closing device 1 is capable of opening and closing the opening 10 using the opening / closing body 2 by rotating the rotating body 31 using the drive unit 32A, and is also capable of opening the opening 10 using the opening / closing body 2 due to the restoring force of the spring 32B.

[0016] As shown in FIG. 5(a), the shaft 30 is made of, for example, a circular tube with a circular cross section (for example, a metal tube such as a steel tube). The shaft 30 has a circumferential surface formed with a plurality of through holes 30h. These through holes 30h are used for fixing, for example, the shaft 30 and various other components. As shown in FIG. 3(a), the connecting member 7 is also made of, for example, a circular pipe with a circular cross section (for example, a metal pipe such as a steel pipe). It is preferable that the connecting member 7 be a circular tube that is smaller in diameter and lighter than the shaft 30.

[0017] The wheel 6 comprises a circular base plate 60, a central through hole 61 formed in the center of the circular base plate 60, a plurality of peripheral side through holes 62, 62... formed at a predetermined interval along the peripheral portion of the circular base plate 60, an opening / closing body connection portion 63 to which one end side of the opening / closing body 2 is connected, and a cylindrical rotating cylinder body 64 attached to the peripheral portion of the central through hole 61 in the circular base plate 60.

[0018] The wheels 6 are provided on at least both ends 30L, 30R of the shaft 30. For example, the wheels 6 are provided on both ends 30L, 30R of the shaft 30, and one or more wheels 6 are also provided on the center side of the shaft 30 at predetermined intervals in the direction along the central axis 30C of the shaft 30. That is, the multiple wheels 6, 6... are, for example, a left wheel 6 provided on the left end 30L side of the shaft 30, a right wheel 6 provided on the right end 30R side of the shaft 30, and one or more central wheels 6 provided in the central portion of the shaft 30 between the left wheel 6 and the right wheel 6. For example, as shown in FIG. 2, wheels 6 are provided on both ends 30L, 30R of the shaft 30, and four wheels 6 are provided at the center of the shaft 30 at predetermined intervals in the direction along the central axis 30C of the shaft 30.

[0019] The central through-hole 61 of the wheel 6 is formed as a circular through-hole having a diameter larger than the outer diameter of the circular tube that constitutes the shaft 30 so that the circular tube can pass through the central through-hole 61 . The cylindrical rotating cylinder 64 attached to the periphery of the circular through hole that constitutes this central through hole 61 is arranged to extend in a direction along the central axis 30C of the shaft 30, and the inner diameter of the cylinder is formed to a dimension corresponding to the outer diameter of the circular tube that constitutes the shaft 30 so that it can rotate smoothly around the outer peripheral surface of the shaft 30 with the central axis 30C of the shaft 30 as the center of rotation. The peripheral side through hole 62 of the wheel 6 is formed as a circular through hole having a diameter corresponding to the outer diameter of the circular tube constituting the connecting member 7 so that the circular tube constituting the connecting member 7 can pass through in a fitted state. That is, the peripheral edge side through hole 62 is a connecting through hole for connecting the connecting member 7 to the wheel 6, and is formed with a hole diameter such that the connecting member 7 can be fitted through it. The opening / closing body connection portion 63 of the wheel 6 is configured by an outer circumferential cylindrical portion provided so as to extend from the outer circumferential edge of the circular plate constituting the circular base plate 60 in a direction along the central axis 30C of the shaft 30. That is, the central through hole 61 is formed of a circular hole centered on the central axis 30C of the shaft 30, and the outer circumferential cylindrical portion constituting the opening / closing body connecting portion 63 is formed of a cylindrical portion centered on the central axis 30C of the shaft 30. In other words, the wheel 6 is configured so that the central axis (center line) of the central through hole 61, the central axis (center line) of the opening / closing body connection portion 63, and the central axis (center line) of the rotating cylinder 64 coincide with each other, and is configured with a recess 65 partitioned by the circular base plate 60 and the opening / closing body connection portion 63.

[0020] Each of the circular through holes constituting the multiple peripheral side through holes 62, 62... formed in the circular substrate 60 of the wheel 6 is positioned, for example, on the outer peripheral edge side of the circle of the circular substrate 60, so that the centers of the circular through holes are located at positions 120 degrees apart from each other in the circumferential direction. Each of the connecting members 7 is provided in each of the wheels 6, 6 . . . so as to pass through the peripheral side through holes 62, 62 . . . which are positioned in a straight line parallel to the central axis 30C of the shaft 30. That is, the winding device 3 according to the first embodiment is configured such that the connecting members 7, 7 . . . are located at portions spaced apart from each other by 120 degrees in the circumferential direction around the central axis 30C of the shaft 30. In other words, the winding device 3 of embodiment 1 is a winding device equipped with a rotating body 31, for example, composed of a plurality of wheels 6, 6... arranged at intervals along the central axis 30C of the shaft 30 and three connecting members 7, 7... that connect these plurality of wheels 6, 6..., i.e., a cylindrical cage-shaped rotating body 31 having a hollow portion.

[0021] In addition, each figure illustrates a wheel 6 having a configuration in which a circular through hole is provided as a spare peripheral side through hole 62S between two adjacent peripheral side through holes 62, 62 that are circumferentially spaced 120 degrees from each other. Although this spare peripheral side through hole 62S is not used in the winding device 3 according to the first embodiment, it may be used depending on the number of connecting members 7 used.

[0022] The cylindrical rotating cylinder 64 is, for example, a rotating cylinder incorporating a bearing 66 (see FIG. 8(a)), or a rotating cylinder without incorporating a bearing. That is, in the winding device 3 of embodiment 1, a winding device configured to use, as the wheel 6, a wheel 6A having a rotating cylindrical body 64A without a bearing built-in as shown in Figure 6, and a wheel 6B having a rotating cylindrical body 64B with a bearing 66 built-in as shown in Figures 7 and 8 is exemplified. For example, as shown in FIG. 2, a wheel 6B having a rotating cylinder 64B incorporating a bearing 66 is arranged on the left and right ends 30L, 30R of the shaft 30, and an inexpensive rotating cylinder 64A not incorporating a bearing is arranged in the center between the left and right sides of the shaft 30. This makes it possible to realize an economical winding device 3 in which the wheels 6B, 6B... arranged on the left and right ends 30L, 30R of the shaft 30 rotate smoothly around the outer circumferential surface of the shaft 30, thereby causing the rotating body 31 to rotate smoothly.

[0023] The winding device 3 has a shaft 30 passing through central through holes 61, 61... of multiple wheels 6, 6..., the multiple wheels 6, 6... being arranged at predetermined intervals along the central axis 30C of the shaft 30, and a number of connecting members 7, 7... arranged to extend along the central axis 30C of the shaft 30, passing through peripheral through holes 62, 62... of each wheel 6, 6.... For example, as shown in FIG. 2, the shaft 30 passes through central through holes 61, 61... of the six wheels 6, 6... so that the six wheels 6, 6... are arranged at a predetermined interval along the central axis 30C of the shaft 30, and three connecting members 7, 7... arranged to extend along the central axis 30C of the shaft 30 pass through peripheral through holes 62, 62... of each wheel 6, 6... and are arranged parallel to the shaft 30 and each other.

[0024] The wheel 6 is provided with a reinforcing member 8 extending from the peripheral side of the peripheral side through hole 62 on at least one of the plate surfaces 60a, 60b of the circular base plate 60 in a direction along the central axis 7C of the connecting member 7, and the connecting member 7 and the wheel 6 are fixed together by welding via the reinforcing member 8.

[0025] For example, as shown in Figures 2, 3(a) and 4, on one plate surface 60a side (the recess 65 side) of the circular base plate 60 of the wheel 6, a reinforcing member 8 with a recess is provided as the reinforcing member 8 so as to extend from the peripheral side of the peripheral side through hole 62 on one plate surface 60a in a direction along the central axis 7C of the connecting member 7, and on the other plate surface 60b side (the opposite side to the recess 65) of the circular base plate 60 of the wheel 6, a reinforcing member 8 with a curved surface 8C is provided as the reinforcing member 8 so as to extend from the peripheral side of the peripheral side through hole 62 on the other plate surface 60b in a direction along the central axis 7C of the connecting member 7, and a reinforcing member 8 with a recess is provided as the reinforcing member 8 so as to extend from the peripheral side of the peripheral side through hole 62 on the other plate surface 60b in a direction along the central axis 7C of the connecting member 7. Incidentally, Figure 4(a) is a front view showing the recess 65 side of the wheel 6, the connecting member 7, and the reinforcing member with recess 8A from the diagonally lower left side of Figure 3(a), and Figure 4(c) is a rear view showing the other plate surface 60b side of the wheel 6, the connecting member 7, the reinforcing member with curved surface 8C, and the reinforcing member with recess 8B from the diagonally upper right side of Figure 3(a). On one plate surface 60a side (the recess 65 side) of the circular base plate 60 of the wheel 6, the wheel 6 and the connecting member 7 are fixed by welding via a recessed reinforcing member 8A, and on the other plate surface 60b side of the circular base plate 60 of the wheel 6, the wheel 6 and the connecting member 7 are fixed by welding via a curved surface reinforcing member 8C and a recessed reinforcing member 8B.

[0026] In other words, the connecting member 7 and the wheel 6 are fixed to each other by welding via a recessed reinforcing member 8A on one plate surface 60a side (the recess 65 side) of the circular base plate 60 of the wheel 6. This makes it possible to distribute the welded portion in a direction along the central axis 7C of the connecting member 7, thereby reducing stress concentration at the fixed portion between the connecting member 7 and the wheel 6. Furthermore, on the other plate surface 60b side of the circular base plate 60 of the wheel 6, the connecting member 7 and the wheel 6 are fixed by welding via a curved surface reinforcing member 8C and a recessed surface reinforcing member 8B. This makes it possible to distribute the welded portion in a direction along the central axis 7C of the connecting member 7, thereby reducing stress concentration at the fixed portion between the connecting member 7 and the wheel 6.

[0027] In other words, according to the conventional winding device disclosed in Patent Document 1 and the like, when the fixed portion between the connecting member and the wheel is constructed by welding as a fixing means, the welded portion that forms the fixed portion is limited to around the edge of the peripheral through hole, which makes it easy for stress to concentrate at the welded portion, resulting in a problem that bending or the like can easily occur in the connecting member. Therefore, in the winding device 3 of embodiment 1, by welding via a reinforcing member 8A with a recess, and by welding via a reinforcing member 8C with a curved surface and a reinforcing member 8B with a recess, it is possible to distribute the welded portion, which is the fixed portion between the connecting member 7 and the wheel 6, in a direction along the central axis 7C of the connecting member 7.As a result, stress is distributed in the direction along the central axis 7C of the connecting member 7, and stress concentration at the fixed portion between the connecting member 7 and the wheel 6 can be reduced, making it possible to provide a winding device 3 in which bending, etc. is less likely to occur in the connecting members 7, 7...

[0028] For example, in the winding device 3 according to the first embodiment, first, the outer peripheral surface of the connecting member 7 and the hole edge side of the peripheral-side through-hole 62 of the wheel 6 are welded to fix the connecting member 7 and the wheel 6. In the fixation by welding, the welded portion is limited to the periphery of the hole edge of the peripheral-side through-hole 62, so that stress is likely to concentrate on the welded portion, and the connecting member 7 is likely to bend or the like. Therefore, in the winding device 3 according to the first embodiment, the connecting member 7 and the wheel 6 are fixed by welding via the reinforcing member 8A with a recess, and by welding via the reinforcing member 8C with a curved surface and the reinforcing member 8B with a recess, so that the welded portion, which is the fixing portion that fixes the connecting member 7 and the wheel 6, is provided in a location other than around the hole edge of the peripheral side through hole 62. That is, since the welded portion, which is the fixing portion between the connecting member 7 and the wheel 6, can be distributed in the direction along the central axis 7C of the connecting member 7, stress is distributed in the direction along the central axis 7C of the connecting member 7, and stress concentration at the fixing portion between the connecting member 7 and the wheel 6 can be reduced, and it has become possible to provide a winding device 3 in which bending or the like is unlikely to occur in the connecting members 7, 7...

[0029] Incidentally, in the winding device 3 of embodiment 1, the configuration does not require welding between the outer peripheral surface of the connecting member 7 and the edge side of the peripheral side through hole 62 of the wheel 6 (welding around the edge of the peripheral side through hole 62). That is, in the winding device 3 of embodiment 1, the connecting member 7 and the wheel 6 are fixed by welding via a reinforcing member 8 that is provided so as to extend from the peripheral side of the peripheral side through hole 62 on at least one of the two plate surfaces 60a, 60b of the circular base plate 60 of the wheel 6 in a direction along the central axis 7C of the connecting member 7. For example, the connecting member 7 and the wheel 6 may be fixed by welding via the reinforcing member 8A with recesses, and by welding via the reinforcing member 8C with curved surfaces and the reinforcing member 8B with recesses.

[0030] The welding via the reinforcing member with recesses 8A and the welding via the curved surface reinforcing member 8C and the reinforcing member with recesses 8B will be described in detail below. As the reinforcing member 8, one or more types of reinforcing member 8 may be used from among reinforcing members 8 with recesses 8A, 8B having a configuration with a recess 80 extending in a direction along the central axis 7C of the circular tube constituting the connecting member 7, and reinforcing member with curved surface 8C having a curved inner surface 86 and a curved outer surface 87 corresponding to the curvature of the outer peripheral surface of the circular tube constituting the connecting member 7. In the winding device 3 of embodiment 1, however, a winding device configured using three types of reinforcing members 8, namely reinforcing members 8A, 8B having recesses, and reinforcing member with curved surface 8C, will be described as an example.

[0031] As shown in Figure 3, the reinforcing members 8A and 8B with recesses are configured to extend in a direction along the central axis 7C of the circular tube constituting the connecting member 7 and have recesses 80 with a concave cross-sectional shape perpendicular to the extension direction. That is, as shown in Figure 3(b), the recessed reinforcing members 8A, 8B are composed of a rectangular bottom plate 80a, a left side plate 80b extending from the left side of the bottom plate 80a in a direction perpendicular to the plate surface of the bottom plate 80a, a right side plate 80c extending from the right side of the bottom plate 80a in a direction perpendicular to the plate surface of the bottom plate 80a (extending in the same direction as the left side plate 80b), a left edge plate 80d extending from the extended end side of the left side plate 80b in a direction away from the right side plate, and a right edge plate 80e extending from the extended end side of the right side plate 80c in a direction away from the left side plate 80b. That is, as the reinforcing members with recesses 8A, 8B, for example, a so-called hat-shaped steel or the like may be used which has a recess 80 defined by a bottom plate 80a, a left side plate 80b, and a right side plate 80c, and which has a left edge plate 80d and a right edge plate 80e which are provided so as to extend in directions away from each other from the extended ends of the left side plate 80b and the right side plate 80c.

[0032] As shown in Figures 2, 5(b), 6(c), and 7(b), the curved-surface reinforcing member 8C is composed of a curved wall extending from the edge of the peripheral-side through-hole 62 in the other plate surface 60b of the circular base plate 60, which is opposite the bottom surface of the recess 65 of the wheel 6 (one plate surface 60a of the circular base plate 60), perpendicular to the other plate surface 60b to the opposite side of the recess 65. That is, the curved surface reinforcing member 8C is formed of a curved wall body having a curved inner surface 86 and a curved outer surface 87 that correspond to the curvature of the outer peripheral surface of the circular tube that constitutes the connecting member 7. As shown in Figures 4, 6 and 7, the curved wall constituting this curved surface reinforcing member 8C is provided, for example, to extend from a half-circumference portion of the entire circumference of the edge of the peripheral side through hole 62, and both end sides in the direction along the curvature of the curved wall are formed with inclined edges 88, 88 (Figures 6(c) and 7(b)) that extend and rise at an angle from the edge of the peripheral side through hole 62. Moreover, the curved surface reinforcing member 8C is formed integrally with the circular base plate 60 of the wheel 6 by, for example, a molding die.

[0033] In the winding device 3 according to the first embodiment, a reinforcing member 8A with a recess is used as the reinforcing member 8 on the recess 65 side of the circular base plate 60 of the wheel 6, as shown in FIG. 3(a), for example. That is, first, the reinforcing member 8A with recesses is placed inside the recesses 65 of the reinforcing member 8A with recesses so that the circular tube constituting the connecting member 7, which passes through the peripheral side through hole 62 and is positioned on the recess 65 side, fits inside the recesses 65 of the reinforcing member 8A with recesses. Then, the peripheral side of the peripheral through hole 62 on the plate surface (one plate surface) 60a on the recess 65 side of the circular substrate 60 is brought into contact with one end side of the circular pipe in the recessed reinforcing member 8A in the direction along the central axis 7C of the circular pipe, and the inner surface of the recess 80 of the recessed reinforcing member 8A is brought into contact with the outer peripheral surface of the circular pipe, and then the peripheral side of the peripheral through hole 62 and one end side of the recessed reinforcing member 8A are fixed by welding, and the inner surface of the recess 80 of the recessed reinforcing member 8A and the outer peripheral surface of the circular pipe are fixed by welding.

[0034] An example of welding using the reinforcing member 8A with recesses will be described with reference to FIG. FIG. 4(b) is an enlarged view of the upper right part of FIG. 4(a) for explaining the welding example. For example, as shown in FIG. 4(b), one end side along the central axis 7C of the circular tube (connecting member 7) of the recessed reinforcing member 8A and one plate surface 60a of the circular base plate 60 are fixed by a weld W1, the left edge plate 80d of the recessed reinforcing member 8A and the inner surface of the cylindrical portion constituting the opening / closing body connection portion 63 of the wheel 6 are fixed by W2, and the right edge plate 80e of the recessed reinforcing member 8A and the inner surface of the cylindrical portion constituting the opening / closing body connection portion 63 of the wheel 6 are fixed by W2. Furthermore, the bottom surface (inner surface of the bottom plate 80a) of the recess 80 of the reinforcing member 8A with a recess and the outer peripheral surface of the circular pipe that constitutes the connecting member 7 are fixed by a weld W3, the left wall surface (inner surface of the left side plate 80b) of the recess 80 of the reinforcing member 8A with a recess and the outer peripheral surface of the circular pipe are fixed by a weld W3, and the right wall surface (inner surface of the right side plate 80c) of the recess 80 of the reinforcing member 8A with a recess and the outer peripheral surface of the circular pipe are fixed by a weld W3. In other words, the connecting member 7 is composed of a circular tube with a circular cross-section, and the reinforcing member 8 is a reinforcing member 8A with a recess having a recess 80 extending in a direction along the central axis 7C of the circular tube constituting the connecting member 7, and the inner surface of the recess 80 of the reinforcing member 8A with a recess and the outer peripheral surface of the circular tube constituting the connecting member 7 are fixed together by welding.

[0035] The weld between one end of the reinforcing member 8A with recesses and the peripheral side of the peripheral side through hole 62 may be, for example, a point weld welded at multiple locations around the entire circumference of one edge of the reinforcing member 8A with recesses, a linear weld welded over a predetermined range around the entire circumference of one edge of the reinforcing member 8A with recesses, or a linear weld welded along the entire circumference of one edge of the reinforcing member 8A with recesses. In addition, the weld between the inner surface of the recess 80 of the reinforcing member 8A with recesses and the outer peripheral surface of the circular pipe that constitutes the connecting member 7 is, for example, a point weld or a line weld welded to the contact portion between the inner surface of the recess 80 of the reinforcing member 8A with recesses and the outer peripheral surface of the circular pipe.

[0036] Furthermore, in the winding device 3 of embodiment 1, on the side opposite to the recess 65 of the circular base plate 60 of the wheel 6, i.e., the other plate surface 60b side of the circular base plate 60, a curved surface reinforcing member 8C and a recessed surface reinforcing member 8B are used as the reinforcing member 8. That is, the circular tube constituting the connecting member 7 passes through the peripheral side through hole 62 to bring at least a portion of the outer peripheral surface of the circular tube into contact with the curved inner surface 86 of the curved surface reinforcing member 8C, and the circular tube constituting the connecting member 7 and the curved surface reinforcing member 8C are fixed together by welding. Furthermore, the reinforcing member 8B with recesses is installed on the other plate surface 60b side of the circular substrate 60 so that the circular tube and the reinforcing member 8C with curved surface that constitute the connecting member 7, which penetrates the peripheral side through hole 62 and is positioned on the other plate surface 60b side of the circular substrate 60, fit inside the recess 80 of the reinforcing member 8B with recesses.

[0037] Furthermore, for the same connecting member 7 penetrating the peripheral side through hole 62, the recessed reinforcing member 8A arranged on the recessed portion 65 side of the wheel 6 and the recessed reinforcing member 8B arranged on the opposite side to the recessed portion 65 are arranged so that their bottom plates 80a, 80a are not positioned on the same plane. Preferably, the recessed reinforcing member 8A and the recessed reinforcing member 8B are arranged so that the plate surface of the bottom plate 80a of the recessed reinforcing member 8A and the plate surface of the bottom plate 80a of the recessed reinforcing member 8B are positioned on planes parallel to each other. In other words, the reinforcing member with recesses 8A and the reinforcing member with recesses 8B are arranged on the circumferential surface of the circular tube constituting the connecting member 7 at positions spaced 180 degrees from each other so that the bottom surfaces of the respective recesses 80, 80 are located at positions spaced 180 degrees from each other. In other words, the reinforcing member 8A with recesses and the reinforcing member 8B with recesses are arranged at positions 180 degrees apart on the circumferential surface of the circular tube constituting the connecting member 7 and shifted in a direction along the central axis 7C of the circular tube (on one plate surface side 60a and the other plate surface side 60b) so that the circular tube is embraced by the opposing recesses 80 and recesses 80.

[0038] Then, the peripheral side of the peripheral side through hole 62 on the other plate surface 60b of the circular substrate 60 is brought into contact with one end side of the recessed reinforcing member 8B in the direction along the central axis 7C of the circular tube, and the inner surface of the recessed portion 80 of the recessed reinforcing member 8B is brought into contact with the outer peripheral surface of the circular tube constituting the connecting member 7 and the curved outer surface 87 of the curved surface reinforcing member 8C. In this state, the peripheral side of the peripheral side through hole 62 and one end side of the recessed reinforcing member 8B are fixed by welding, the inner surface of the recess 80 of the recessed reinforcing member 8B and the outer peripheral surface of the circular tube that constitutes the connecting member 7 are fixed by welding, and the inner surface 80 of the recess of the recessed reinforcing member 8B and the curved outer surface 87 of the curved surface reinforcing member 8C are fixed by welding.

[0039] An example of welding using a curved surface reinforcing member 8C and a recessed portion reinforcing member 8B will be described with reference to FIG. 4(d). FIG. 4(d) is an enlarged view of the upper right portion of FIG. 4(c) for explaining an example of a welded portion. For example, as shown in FIG. 4(d), a curved surface reinforcing member 8C and the outer circumferential surface of a circular pipe constituting the connecting member 7 are fixed together by a welded portion W4. Moreover, one end side of the recessed reinforcing member 8B in the direction along the central axis 7C of the circular pipe and the other plate surface 60b of the circular base plate 60 are fixed together by a welded portion W5. Additionally, the bottom surface of the recess 80 of the recessed reinforcing member 8B (the inner surface of the bottom plate 80a) and the outer circumferential surface of the circular pipe constituting the connecting member 7 are fixed together by a welded portion W6. Furthermore, the left wall surface (inner surface of the left side plate 80b) of the recess 80 of the recessed reinforcing member 8A and the curved outer surface 87 of the curved surface reinforcing member 8C are fixed by a weld W7, and further, the right wall surface (inner surface of the right side plate 80c) of the recess 80 of the recessed reinforcing member 8A and the curved outer surface 87 of the curved surface reinforcing member 8C are fixed by a weld W7. In other words, the reinforcing member with recess 8B and the wheel 6 are fixed by welding, the inner surface of the recess of the reinforcing member with recess 8B and the outer peripheral surface of the circular tube that constitutes the connecting member 7 are fixed by welding, and the inner surface of the recess of the reinforcing member with recess 8B and the curved outer surface 87 of the reinforcing member with curved surface 8C are fixed by welding.

[0040] The winding device 3 of embodiment 1 configured as described above is provided with reinforcing members 8A, 8B with recesses and a reinforcing member 8C with a curved surface, and the connecting member 7 and the wheel 6 are fixed by welding via the reinforcing member 8A with recesses, and by welding via the reinforcing member 8C with the curved surface and the reinforcing member 8B with recesses. Therefore, the welded portion, which is the fixed portion between the connecting member 7 and the wheel 6, can be distributed in a direction along the central axis 7C of the connecting member 7, and stress concentration at the fixed portion between the connecting member 7 and the wheel 6 can be reduced, so that a winding device 3 can be provided in which bending, etc. is less likely to occur in the connecting members 7, 7...

[0041] In the winding device 3 of embodiment 1, the welds made via the reinforcing member 8A with recesses, and the welds made via the reinforcing member 8C with curved surface and the reinforcing member 8B with recesses and the reinforcing member 8A with recesses are not limited to the welds described in Figures 4(b) and 4(d) above, and the welds may be provided at locations other than the welds described above, or the locations at which the welds are provided may be increased or decreased relative to the welds described above.

[0042] In addition, in the winding device 3 of embodiment 1, a winding device configured using all three types of reinforcing members 8, namely, reinforcing members 8A and 8B with recesses and reinforcing member 8C with a curved surface, is exemplified, but it is not necessarily necessary to use all three types of reinforcing members 8.

[0043] For example, the reinforcing member 8 may be a curved surface reinforcing member 8C alone, and the connecting member 7 and the wheel 6 may be fixed together by welding via the curved surface reinforcing member 8C. For example, a wheel 6A having a curved surface reinforcing member 8C shown in Figure 6 and a wheel 6B having a curved surface reinforcing member 8C shown in Figures 7 and 8 may be used as the wheels 6, and the connecting member 7 and the wheels 6 may be fixed by welding via the curved surface reinforcing members 8C of the wheels 6A and 6B without using the reinforcing members 8A and 8B with recesses. Even in the case of this configuration, welding via a curved surface reinforcing member 8C makes it possible to distribute the welded portion, which is the fixed portion between the connecting member 7 and the wheel 6, in the direction along the central axis 7C of the connecting member 7. As a result, stress is distributed in the direction along the central axis 7C of the connecting member 7, reducing stress concentration at the fixed portion between the connecting member 7 and the wheel 6, thereby achieving the desired effect of the present invention.

[0044] In the above, an example was given of a curved-surface reinforcing member 8C configured to extend from the edge of the peripheral side through hole 62 on the other plate surface 60b of the circular base plate 60 of the wheel 6 to the side opposite the recess 65, but the curved-surface reinforcing member 8C may also be configured to extend from the edge of the peripheral side through hole 62 on the bottom surface (one plate surface 60a) of the recess of the circular base plate 60 of the wheel 6 toward the recess 65. Furthermore, the curved wall constituting the curved surface reinforcing member 8C may be of any shape as long as it is configured with a curved inner surface 86 that corresponds to the curvature of the outer peripheral surface of the circular tube that constitutes the connecting member 7. In other words, the curved surface reinforcing member 8C may be configured to extend from the periphery of the peripheral side through hole 62 on at least one of the plate surfaces 60a, 60b of the circular base plate 60 of the wheel 6 in a direction along the central axis 7C of the circular tube constituting the connecting member 7, and to have a curved inner surface 86 that corresponds to the curvature of the outer peripheral surface of the circular tube and comes into contact with at least a portion of the outer peripheral surface of the circular tube.

[0045] Furthermore, only the reinforcing member with recesses 8A may be used as the reinforcing member 8, without using the reinforcing member with recesses 8B and the reinforcing member with curved surface 8C. That is, even if the connecting member 7 and the wheel 6 are fixed by welding via the reinforcing member with recesses 8A, the desired effect of the present invention described above can be obtained.

[0046] Moreover, it is also possible to use only the reinforcing member 8B with recesses and the reinforcing member 8C with curved surfaces, without using the reinforcing member 8A with recesses, as the reinforcing member 8. That is, even in a configuration in which the connecting member 7 and the wheel 6 are fixed by welding via the reinforcing member 8B with recesses and the reinforcing member 8C with curved surfaces, the desired effect of the present invention described above can be obtained.

[0047] Furthermore, instead of using the curved surface reinforcing member 8C, the recessed reinforcing member 8A or the recessed reinforcing member 8B may be used as the reinforcing member 8. That is, even in a configuration in which the connecting member 7 and the wheel 6 are fixed to each other on one plate surface 60a side of the circular base plate 60 of the wheel 6 by welding via the recessed reinforcing member 8A or the recessed reinforcing member 8B, and the connecting member 7 and the wheel 6 are fixed to each other on the other plate surface 60b side of the circular base plate 60 of the wheel 6 by welding via the recessed reinforcing member 8A or the recessed reinforcing member 8B, the desired effect of the present invention described above can be obtained.

[0048] The winding device 3, which is equipped with a drive unit 32A and a spring 32B that apply a rotational force to the above-mentioned rotating body 31, is called a spring-combined type, and has traditionally been used as a winding device for lightweight shutters. In other words, conventionally, when the effective opening dimension W (see Figure 20(a) hereinafter referred to as the "opening dimension W") on the left and right sides of the opening 10 in which the opening / closing device (shutter device) is installed was up to about 4000 mm, a winding device equipped with a spring-loaded rotating body, which is the winding structure of a lightweight shutter (hereinafter referred to as the "conventional lightweight shutter winding device"), was used, but when the opening dimension W was about 4000 mm or more, a winding device having a structure in which a shaft is rotated by the opening / closing device, which is the winding structure of a medium-weight shutter, was used. However, the winding device of the medium-weight shutter described above does not use a spring, and therefore requires a device to prevent sudden descent, which increases the weight of the bracket and winding device and increases costs.

[0049] Therefore, in the present invention, in order to achieve weight reduction and cost reduction in the winding device of an opening / closing device to be installed in an opening 10 with a width dimension W of approximately 4000 mm or more, attention was focused on the configuration of the winding device of the conventional lightweight shutter described above. However, when adopting the configuration of the conventional lightweight shutter winding device described above as a winding device for an opening / closing device to be installed in an opening 10 with a width dimension W of approximately 4000 mm or more, there was a problem in that the length of the shaft would be long and the length of the rotating body in the left-right direction would also be long, making the rotating body more prone to bending. In other words, if the configuration of the winding device of the conventional lightweight shutter described above were adopted as it is as a winding device for an opening / closing device to be installed in an opening 10 with a width dimension W of approximately 4000 mm or more, the rotating body would be prone to bending, and if the bending of the rotating body became significant, the burden on the connecting members, wheels, etc. would increase as the rotating body bent, which was a problem that needed to be overcome. Therefore, the inventors of the present invention conducted intensive research to overcome the above-mentioned problems, and as a result, came to invent a spring-combined winding device that can increase the rigidity of the rotating body to realize a rotating body that is less likely to bend, and is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0050] According to the winding device 3 of the above-mentioned embodiment 1, stress concentration at the fixed portion between the connecting member 7 and the wheel 6 can be reduced and the rigidity of the rotating body 31 can be increased, making it possible to configure a rotating body 31 that is less likely to bend. This makes it possible to increase the strength of the shaft 30 and increase the diameter of the wheel 6, thereby making it possible to increase the diameter of the rotating body 31. As a result, it has become possible to provide a spring-combined winding device 3 that is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0051] EMBODIMENT 2 Next, a winding device 3 according to a second embodiment will be described with reference to FIGS. In the following, in each embodiment shown in FIG. 9 and FIG. 22, the same parts as or corresponding parts to those explained in the first embodiment shown in FIG. 1 to FIG. 8 are denoted by the same reference numerals.

[0052] In embodiment 2, in order to realize a spring-combined winding device 3 suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more, a shaft 30 having greater strength than shafts used in conventional winding devices for lightweight shutters is used as the shaft 30, and a wheel with a larger diameter than the wheels used in conventional winding devices for lightweight shutters is used as the wheel 6, and a rotating body 31 with a larger diameter than the rotating body used in conventional winding devices for lightweight shutters is provided. In order to increase the rigidity of the rotating body 31 so as to suppress deflection of the rotating body 31, the welding portion for fixing the connecting member 7 and the wheel 6 is configured as follows.

[0053] As shown in Figures 9 to 11, the winding device 3 of embodiment 2 has, as welded parts, a weld W10 formed by welding the outer peripheral surface of the circular tube constituting the connecting member 7 inserted into the recess 80 of the recessed reinforcing member 8A to the inner surface of the recess 80 of the recessed reinforcing member 8A in a direction along the central axis 7C of the circular tube (or the central axis of the peripheral side through hole 62) on the outer peripheral surface of the circular tube, and a weld W11 formed by welding the connecting member 7 to the peripheral side of the peripheral side through hole 62 of the wheel 6 on the side of the wheel 6 where the recessed reinforcing member 8A is not provided, and is configured to have a rotating body 31 in which the connecting member 7 and the wheel 6 are fixed by these welded parts W10 and welded parts W11.

[0054] More specifically, the welded portion is composed of a welded portion W10, formed by continuously welding the adjacent portion between the inner surface of the left side plate 80b of the recessed reinforcing member 8A and the outer peripheral surface of the circular tube that constitutes the connecting member 7 in a direction along the central axis 7C of the circular tube, as shown in Figure 10, a welded portion W10, formed by continuously welding the adjacent portion between the inner surface of the right side plate 80c of the recessed reinforcing member 8A and the outer peripheral surface of the circular tube that constitutes the connecting member 7 in a direction along the central axis 7C of the circular tube, and a welded portion W11, formed by welding the periphery of the peripheral side through hole 62 on the other plate surface 60b of the circular base plate 60 of the wheel 6 to the outer peripheral surface of the circular tube that constitutes the connecting member 7, as shown in Figure 11.

[0055] That is, in the winding device 3 of embodiment 2, the connecting member 7 is formed of a circular tube with a circular cross-section, and the reinforcing member 8 is a reinforcing member 8A with a recess having a recess 80 extending from the peripheral side of the peripheral side through hole 62 on one of the two plate surfaces 60a of the circular base plate 60 of the wheel 6 in a direction along the central axis 7C of the circular tube constituting the connecting member 7, and the inner surface of the recess 80 of the reinforcing member 8A with recess and the outer peripheral surface of the circular tube constituting the connecting member 7 are fixed by a weld W10 that continues in the direction along the central axis 7C of the circular tube, and the rotating body 31 is provided in which the outer peripheral surface of the circular tube and the peripheral side of the peripheral side through hole 62 on the other plate surface 6b of the two plate surfaces of the circular base plate 6a of the wheel 6 are fixed by a weld W11.

[0056] According to the winding device 3 of embodiment 2, the welded portion that serves as the fixed portion between the connecting member 7 and the wheel 6 is composed of the above-mentioned welded portion W10 and welded portion W11, so that stress is dispersed in the direction along the central axis 7C of the connecting member 7, thereby reducing stress concentration at the fixed portion between the connecting member 7 and the wheel 6. Therefore, it is possible to realize a configuration in which the rigidity of the rotor 31 can be increased and deflection of the rotor 31 can be suppressed, thereby increasing the strength of the shaft 30 and increasing the diameter of the wheel 6, thereby realizing a larger diameter rotor 31, and providing a spring-combined winding device 3 suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0057] EMBODIMENT 3 The drive unit provided in a conventional lightweight shutter winding device is composed, for example, of a drive gear wheel portion that is rotatable around the central axis of the shaft, a motor as a drive source, and a power transmission mechanism that transmits the rotational force of the motor to the drive gear wheel portion. The above-mentioned drive gear wheel portion is constituted by, for example, an internal gear member. The internal gear member is composed of a circular plate, with an internal gear (internal gear) formed on the peripheral surface of the central through hole of the circular plate, and a torque transmission portion on the outer circumferential side of the circular plate for transmitting rotational torque to the connecting member. The torque transmission portion is a recess into which the connecting member is inserted. The recess is formed of recessed holes formed on the outer periphery of the annular plate at portions spaced apart from each other by, for example, 120 degrees in the circumferential direction, and each connecting member is fitted into each recess. In this way, the internal gear member serving as the drive gear wheel portion is rotatably arranged with the central axis of the shaft as the center of rotation, and the internal gear member is connected to the connecting member via a torque transmission portion, and the internal gear of the internal gear member is configured to mesh with an output gear provided at the tip side of the rotating shaft rotated by a motor fixed to the shaft. The rotational force of the output gear is transmitted to the internal gear of the internal gear member, and as the internal gear member rotates around the central axis of the shaft, the rotational force of the internal gear member is transmitted to each connecting member via each torque transmission section, causing the rotating body to rotate around the central axis of the shaft.

[0058] However, in embodiment 3, in order to realize a spring-combined winding device 3 suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more, a shaft 30 having greater strength than the shafts used in conventional winding devices for lightweight shutters is used as the shaft, and a wheel 6 having a larger diameter than the wheels used in conventional winding devices for lightweight shutters is used as the wheel, and a rotating body 31 having a larger diameter than the rotating body used in conventional winding devices for lightweight shutters is used as the wheel, so it was necessary to overcome the problem that the internal gear members used in conventional winding devices for lightweight shutters could not be used as is.

[0059] Therefore, in embodiment 3, the above-mentioned problems are overcome by using an internal gear portion 34 that utilizes an internal gear member as described below, making it possible to provide a spring-combined winding device 3 that is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0060] A winding device 3 according to a third embodiment will be described with reference to FIGS. The winding device 3 according to the third embodiment includes a drive unit 32A at one end side (for example, the right end side) of the shaft 30 as shown in FIG. The drive unit 32A is composed of an internal gear portion 34 as a drive gear wheel portion, a motor 35 as a drive source fixed to the shaft 30, and an output gear (spur gear) 37 as a power transmission means provided at the tip side of a rotating shaft 36 (see Figure 12 (b)) rotated by the motor 35 and transmitting the rotational force of the motor 35 to the internal gear (internal gear) 34e of the internal gear portion 34.

[0061] As shown in FIG. 12, the internal gear portion 34 is configured to include a wheel member 34A, an internal gear member 34B, and a diameter expansion torque transmission member 34C. The wheel member 34A includes an annular plate 34a and a cylindrical boss 34d that extends from the edge of a central through-hole 34b of the annular plate 34a along the central axis 34c of the central through-hole 34b. With the shaft 30 passing through the central through-hole 34b and boss 34d of the wheel member 34A, the wheel member 34A is configured to be rotatable about a central axis 30C of the shaft 30 as the center of rotation. The internal gear member 34B is composed of a circular plate, and an internal gear (internal gear) 34e is formed on the peripheral surface of the central through hole of the circular plate, and the outer circumferential side of the circular plate is provided with a plurality of torque transmission portions 34f, 34f... for transmitting rotational torque to the connecting member 7. The torque transmission portion 34f is configured by, for example, a recess for inserting and fitting the connecting member 7. The recess is a recess formed by cutting out a part of the outer periphery of the annular plate constituting the internal gear member 34B, and is provided on the outer periphery side of the annular plate at positions spaced apart from each other by, for example, 120 degrees in the circumferential direction. The bottom side of the recess of the torque transmission portion 34f is formed in an arc shape with a diameter corresponding to the outer diameter of the circular tube used as a connecting member in conventional lightweight shutter winding devices so that the circular tube can be fitted into the recess. As shown in Figures 12 and 13, the diameter expansion torque transmission member 34C is composed of a circular plate whose outer diameter dimension is larger than the outer diameter dimension of the circular plate of the internal gear member 34B, and is provided with a plurality of torque transmission portions 34g, 34g... on the outer circumferential side of the circular plate for transmitting rotational torque to the connecting member 7. The torque transmission portion 34g is configured, for example, by a recess for inserting and fitting the connecting member 7. The recess is a recess formed by cutting out a part of the outer periphery of the annular plate constituting the diameter expansion torque transmission member 34C, and is provided on the outer periphery side of the annular plate at positions spaced apart from each other by, for example, 120 degrees in the circumferential direction. Furthermore, the bottom side of the recess of the torque transmission portion 34g is formed in an arc shape with a diameter corresponding to the outer diameter of the circular tube used as the connecting member 7 in the winding device 3 of embodiment 3 so that the circular tube is fitted into it. That is, the arc diameter of the bottom side of the recess of the torque transmission portion 34g formed on the outer periphery of the diameter expansion torque transmission member 34C is formed to be larger than the arc diameter of the bottom side of the recess of the torque transmission portion 34f formed on the outer periphery of the internal gear portion 34.

[0062] As shown in FIG. 12, the wheel member 34A and the internal gear member 34B are connected by a connecting means such as welding so that the central axis 34c of the wheel member 34A and the central axis 34i of the internal gear member 34B coincide with each other, and the diameter expansion torque transmission member 34C is detachably attached to the internal gear member 34B by a connecting means such as a screw member 34h so that the central axis 34i of the internal gear member 34B and the central axis 34j of the diameter expansion torque transmission member 34C coincide with each other, thereby forming the internal gear portion 34. The screw member 34h is, for example, passed through a screw through hole 34k formed in the diameter expansion torque transmission member 34C and fastened to a screw hole formed in the internal gear member 34B.

[0063] On the outer periphery of the annular plate of the diameter expansion torque transmission member 34C, the connecting members 7, 7, 7 are fitted into the recesses constituting the torque transmission portions 34g, 34g, 34g provided at positions spaced apart from each other by 120 degrees in the circumferential direction, for example. When the internal gear portion 34 is used, the torque transmission portions 34f, 34f, 34f of the internal gear member 34B are not used.

[0064] As shown in Figs. 9 and 12(b), an output gear 37 provided on the tip side of a rotary shaft 36 rotated by a motor 35 and an internal gear 34e of the internal gear portion 34 are configured to mesh with each other. Therefore, when the motor 35 is driven and the output gear 37 rotates, the internal gear portion 34 also rotates around the central axis 30C of the shaft 30, and the rotational force is transmitted to each of the connecting members 7, 7, 7 fitted into each of the torque transmission portions 34g, 34g... of the diameter expansion torque transmission member 34C, so that the rotating body 31 rotates around the central axis 30C of the shaft 30.

[0065] In other words, in conventional winding devices for lightweight shutters, an internal gear member 34B with an outer diameter smaller than the outer diameter of the diameter expansion torque transmission member was used, and a connecting member 7 was fitted into the recess of the torque transmission portion 34f of the internal gear member 34B. However, in the winding device 3 of embodiment 3, a rotating body 31 with a larger diameter than the diameter of the rotating body of a conventional winding device for a lightweight shutter is configured, which creates a problem in that the rotational force cannot be transmitted to the connecting member 7 using the internal gear member 34B. Therefore, in order to overcome this problem, the diameter expansion torque transmission member 34C as described above was created and attached to the internal gear member 34B, thereby making it possible to accommodate an increase in the diameter of the rotating body 31 and to transmit the rotational force of the motor 35 to the connecting member 7 via the output gear 37 and the internal gear portion 34.

[0066] That is, the winding device 3 according to the third embodiment includes a drive unit 32A having a motor 35 as a drive source fixed to the shaft 30, an output gear 37 provided on the tip side of a rotating shaft 36 rotated by the motor 35, and an internal gear section 34 provided to mesh with the output gear 37. The internal gear section 34 is configured to include a wheel member 34A, an internal gear member 34B, and a diameter expansion torque transmission member 34C. The wheel member 34A includes a circular plate having a central through hole through which the shaft 30 passes, and is provided to be rotatable about the central axis 30C of the shaft 30 as the rotation center. The internal gear member 34B is configured of a circular plate, and an internal gear 34e is formed on the hole circumferential surface of the central through hole of the circular plate. The diameter expansion torque transmission member 34C is composed of a circular plate having an outer diameter dimension larger than the outer diameter dimension of the circular plate of the internal gear member 34B, and is provided with a torque transmission portion 34g on the outer circumferential side of the circular plate for transmitting rotational torque to the connecting member 7. The internal gear member 34B and the wheel member 34A are connected so that the central axis 34i of the circular plate constituting the internal gear member 34B and the central axis 34c of the circular plate of the wheel member 34A coincide with each other, and the diameter expansion torque transmission member 34C is removably attached to the internal gear member 34B so that the central axis 34j of the circular plate constituting the diameter expansion torque transmission member 34C and the central axis 34i of the circular plate constituting the internal gear member 34B coincide with each other. The torque transmission portion 34g of the diameter expansion torque transmission member 34C is connected to the connecting member 7, and by rotating the output gear 37, the internal gear portion 34 rotates around the central axis 30C of the shaft 30 as the center of rotation, and the rotational force of the internal gear portion 34 is transmitted to the connecting members 7, 7..., thereby rotating the rotating body 31. This is a winding device configured as follows.

[0067] According to embodiment 3, by developing the above-mentioned diameter expansion torque transmission member 34C, it is possible to construct an internal gear section 34 utilizing the internal gear member 34B, which makes it possible to accommodate an increase in the diameter of the rotating body 31. This makes it possible to provide a spring-combined winding device 3 having a rotating body 31 that is highly rigid and less likely to bend, and is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more. It is also possible to remove the diameter expansion torque transmission member 34C from the internal gear section 34 to construct a winding device for a conventional lightweight shutter. In other words, the internal gear member 34B can now be used in both conventional lightweight shutter winding devices and in spring-combined winding devices 3 equipped with a rotating body 31 that is highly rigid and less likely to bend, suitable for installation in openings 10 with width dimensions W of approximately 4000 mm or more, thereby enhancing the versatility of the internal gear member 34B.

[0068] EMBODIMENT 4 Considering the rotational balance of the rotating body 31, it is preferable to position the drive unit 32A in the center between the left and right sides of the rotating body 31. However, as described above, in the winding device 3 according to each embodiment, the rigidity of the shaft 30 and the rotating body 31 is increased, making it possible to position the drive unit 32A at one end (one side) of the left and right ends of the rotating body 31. Therefore, in the winding device according to the fourth embodiment, the drive unit 32A is installed at one of the left and right ends of the rotating body 31, and the wiring of the drive unit 32A is passed through the hollow of the shaft 30.

[0069] That is, in the winding device 3 of embodiment 4, as shown in FIG. 9, the shaft 30 is formed of a hollow tube with a circular cross section, and a motor 35 as a drive source is fixed to a shaft portion located between a one-end wheel 6C provided on one end side of the shaft 30 and a wheel 6D that is located second from the one end side to the other end side, and a wiring inlet hole 30A is provided in a position near the one-end wheel 6C in the shaft portion, and wiring 32W including a power line for the motor 35 and a control signal line for a control component for controlling the motor is drawn into the shaft 30 through the wiring inlet hole 30A and drawn to the outside from one end opening (end opening) 30B of the shaft 30.

[0070] Conventionally, wiring including a power line for the motor and a control signal line for a control component for controlling the motor has been passed between the wheel and the shaft and led out to the end side of the shaft, for example. However, in this case, the strength of the wheel may be reduced because processing is required to pull the wiring out to the wheel side to prevent the wiring from twisting, or the strength of the bearing may be insufficient because processing is required for the bearing. This may cause the rotating body to bend more easily, resulting in a problem that it is difficult to obtain a rotating body 31 that is rigid and does not bend easily, and is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0071] Therefore, in the winding device 3 of embodiment 4, the wiring 32W of the drive unit 32A is pulled out through the hollow portion of the shaft 30 via a wiring inlet hole 30A formed in the shaft 30 and out of the end opening 30B of the shaft 30, thereby making it possible to obtain a winding device 3 equipped with a rotating body 31 that is highly rigid and does not easily bend, making it suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0072] EMBODIMENT 5 A winding device 3 according to a fifth embodiment will be described with reference to FIGS. The winding device 3 according to the fifth embodiment is configured to include a wheel 6C having a rotating cylinder 64C with a built-in bearing and a simplified configuration (see FIG. 9). That is, in the winding device 3 of embodiment 5, by using a rotating body 30 equipped with a wheel 6C having a rotating cylindrical body 64C equipped with bearings, the durability of the rotating body 30 is improved, and the rotating body 30 is simplified, reduced in cost, and reduced in weight, so that a spring-combined winding device 3 can be provided that is suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more.

[0073] As shown in FIG. 14, the rotating cylinder 64C of the wheel 6C is a cylinder configured so that the shaft 30 passes through it, and is configured to extend in a direction along the central axis 61C of the central through hole 61 from the circular through hole that constitutes the central through hole 61 of the circular base plate 60 of the wheel 6C. The rotating cylinder 64C includes a bearing 66, a bearing cover 67, a boss 68 on one side, and a boss 69 on the other side. As the bearing 66, for example, a single row deep groove ball bearing is used.

[0074] As shown in FIG. 15, the bearing cover 67 is composed of an annular bottom plate portion 67a having a central through hole 67b for passing the shaft 30 therethrough, and a cylindrical portion 67c extending from the outer peripheral edge of the annular bottom plate portion 67a in a direction along the central axis 67C of the central through hole 67b. An accommodating recess 67A for accommodating the bearing 66 is formed by a cylindrical recess surrounded by the annular bottom plate portion 67a and the cylindrical portion 67c.

[0075] As shown in FIG. 15, the one-side boss 68 is formed of a cylindrical body provided so as to extend beyond the hole edge of the central through-hole 67b of the annular bottom plate portion 67a of the bearing cover 67. As shown in Figure 14, the other side boss 69 is composed of a cylinder extending from the periphery of a circular through hole constituting a central through hole 61 formed in the circular base plate 60 of the wheel 6C for passing the shaft 30 therethrough on the opposite side to the recess 65 of the wheel 6C.

[0076] Then, as shown in Figure 15, the bearing cover 67 and the one-side boss 68 are welded to each other so that the central axis 67C of the central through hole 67b of the bearing cover 67 and the central axis 68C of the one-side boss 68 coincide with each other to form a bearing cover assembly, and as shown in Figure 14, the bearing cover 67 and one of the plate surfaces 60a of the circular base plate 60 are welded to each other, for example, so that the central axis of the bearing cover assembly and the central axis of the other-side boss 69 coincide with each other and the central axis of the bearing cover 67 coincides with the central axis 61C of the central through hole 61 formed in the circular base plate 60 of the wheel 6, thereby forming a rotating cylinder 64C.

[0077] In other words, the rotating cylinder 64C is provided with a bearing 66 installed at a predetermined position near the central through hole 61 of the wheel 6C by a bearing cover 67, so that even if the rotating body 71 is bent, the durability of the rotating cylinder 64C can be improved compared to a rotating cylinder not provided with a bearing, and the durability of the rotating body 71 can be improved. Furthermore, by configuring the bearing cover 67 as a single part, the configuration can be simplified, and weight and costs can be reduced.

[0078] The winding device 3 of embodiment 5 includes a rotating cylinder 64C in which a wheel 6C extends in a direction along the central axis 30C of the shaft 30 from a circular through hole that constitutes a central through hole 61, and the rotating cylinder 64C is configured with a bearing 66 and a bearing cover 67. The bearing cover 67 is configured by combining an annular bottom plate portion 67a having a central through hole 67b for passing the shaft 30 therethrough, and a cylindrical portion 67c provided so as to extend from the outer peripheral edge of the annular bottom plate portion 67a in a direction along the central axis 67C of the annular bottom plate portion 67a, thereby providing a bearing accommodating portion 67A constituted by the cylindrical portion 67c and the annular bottom plate 67a. The bearing 66 is arranged on one of the plate surfaces 60a of the circular base plate 60 of the wheel 6C so that its central axis coincides with the central axis 61C of the central through hole 61 of the wheel 6C, and the bearing 66 is accommodated in the bearing accommodating portion 67A of the bearing cover 67, and the extended end side of the cylindrical portion 67c of the bearing cover 67 is fixed to one plate surface 60a of the circular base plate 60 of the wheel 6C so that the central axis 67c of the annular bottom plate portion 67a of the bearing cover 67 coincides with the central axis 61C of the central through hole 61 of the wheel 6C, thereby forming the rotating cylinder 64C.

[0079] Furthermore, it is provided with a one-side boss 68 formed of a cylinder extending from the edge of the central through hole 67b in the annular bottom plate portion 67a of the bearing cover 67, and an other-side boss 69 formed of a cylinder extending from the edge of the central through hole 61 on the other plate surface 60b side of both plate surfaces of the circular base plate 60 of the wheel 6C. The shaft 30 is configured to pass through the boss 68 on one side, the central through-hole 67b of the annular bottom plate portion 67a of the bearing cover 67, the bearing hole of the bearing 66, and the boss 69 on the other side.

[0080] In other words, according to the wheel 6C equipped with the rotating cylindrical body 64C, as a measure to anticipate the occurrence of bending of the rotating body 31, the durability of the rotating cylindrical body 64C of the rotating body 31 is improved to improve the durability of the rotating body 31, as described above.

[0081] According to embodiment 5, by constructing a rotating cylinder 64C having a built-in bearing 66 and a bearing cover 67 with a simple configuration, the durability of the rotating body 30 is improved and the rotating body 30 is simplified, cost-effective, and lightweight. As a result, it is possible to provide a spring-combined winding device 3 suitable for installation in an opening 10 with a width dimension W of approximately 4000 mm or more, that is, a winding device 3 that can accommodate an increase in the diameter of the rotating body 31 as described in each installation embodiment, has a rotating body 31 that is highly rigid and does not easily bend, and is lightweight and low-cost.

[0082] EMBODIMENT 6 A winding device 3 according to a sixth embodiment will be described. In conventional lightweight shutter winding devices, a spring is connected to each of the wheels located on both ends of the shaft, a washer is provided on the extended end of the boss of the rotating cylinder of the wheel, and a split pin fastening hole is formed in the shaft at a position closer to the end of the shaft than the washer, and the split pin attached to the split pin fastening hole comes into contact with the washer, preventing lateral shifting of the rotating body. However, when force from the spring is applied to the above-mentioned wheel, the rotating body moves in a direction along the central axis of the shaft, and the washer and split pin provided at the extended end of the wheel boss repeatedly come into contact with each other, which can cause the washer to wear down, generating shavings, or the split pin to become dislodged.

[0083] Therefore, in the winding device according to the sixth embodiment, as shown in Figs. 9 and 16, the drive unit 32A is located at one end (one side) of the left and right ends of the shaft 30. In other words, if a split pin is provided next to the wheel 6C located next to the drive unit 32A located on the other end of the shaft 30, the wiring 32W pulled into the shaft 30 will interfere with the split pin as described above, so no split pin is provided on the wiring pull-out end side of the shaft 30.

[0084] In embodiment 6, for example, as shown in FIG. 9, a spring 32B is connected to a wheel 6D arranged on the left end side of the shaft 30 and a wheel 6D arranged on the central side of the shaft 30 closest to the drive unit 32A, and a split pin 72 is provided next to the wheel 6D arranged on the left end side of the shaft 30 and next to the wheel 6D arranged on the central side of the shaft 30 next to the drive unit 32A. One or more dry met washers 74 are provided between the washer 73 provided on the tip side of the boss of the rotating cylinder 64D of the wheel 6D and the split pin 72, thereby preventing lateral displacement of the rotating body 31.

[0085] That is, the winding device 3 of embodiment 6 is provided with a torsion coil spring as the spring 32B, a shaft 31 is arranged to pass through the hollow portion of the spiral of the torsion coil spring and the central through hole 61 of a specified wheel 6D, one end 32a of the torsion coil spring is fixed to the shaft 31, and the other end 32b of the torsion coil spring is fixed to the specified wheel 6D, and a boss formed of a cylindrical body is provided to extend beyond the hole edge of the central through hole 31 of the specified wheel 6D, and the shaft 30 that passes through the boss is provided with a split pin 72 that is provided to pass through the shaft 30 so as to intersect with the central axis 30C of the shaft 30, and a dry met washer 74 is provided between the split pin 72 and the extended end of the boss of the specified wheel 6D. The wheel 6D is configured by providing a washer 73 at the extension end of the boss 68 on one side of the rotating cylinder 64C of the wheel 6C described above, for example.

[0086] According to the winding device 3 of the sixth embodiment, a dry met washer 74 containing a lubricating component is interposed between the washer 73 and the split pin 72 provided on the tip side of the boss of the rotating cylinder 64D of the wheel 6D to which the spring 32B is connected, thereby improving the effect of preventing the lateral slippage of the rotor 30 and improving the effect of suppressing wear of the washer 73 and the split pin 72 due to the rotation of the rotor 31, so that the rotor 31 becomes less likely to bend and the durability of the rotor 31 can be improved. Therefore, it is possible to provide a spring-combined winding device equipped with a rotor 31 that is highly rigid and less likely to bend, suitable for installation in an opening with a width of about 4000 mm or more.

[0087] In the sixth embodiment, as shown in Figs. 9 and 16, two dry met washers 74 are stacked between a washer 73 and a split pin 72 provided on the tip side of the boss of the rotating cylinder 64D of the wheel 6D. By configuring it in this manner, the rotation of the rotor 31 becomes smoother, and the effect of preventing lateral slippage of the rotation valley 31 and the effect of suppressing wear of the washer 73 and the split pin 72 can be improved. As a result, the rotor 31 becomes less likely to bend, and the durability of the rotor 31 can be improved.

[0088] EMBODIMENT 7 As shown in Figures 17 to 19, the hanging member 25 constituting the hanging point in embodiment 7 is a connecting member for connecting one end of the opening / closing body 2 to the winding device 3, and is configured, for example, to be attached to the opening / closing body connection parts 63 of each wheel 6 located at both ends and the center of the shaft 30 of the winding device 3, and is provided with a buffer part 25C on the surface side that comes into contact with the opening / closing body main body 20 that is wound up around the rotating body 31.

[0089] As shown in Figs. 18 and 19, the hanging member 25 is made of a rectangular plate-like member that is long in the left-right direction when viewed from the front. As shown in Figure 19(b), the hanging member 25 comprises an opening / closing body side connection portion 25A to which the upper end portion 20t of the opening / closing body main body 20 is connected, a wheel side connection portion 25B connected to the opening / closing body connection portion 63 of the wheel 6, and a buffer portion 25C. That is, the hanging member 25 has an opening / closing body side connection part 25A at the lower end side, a buffer part 25C at the upper end side, and a wheel side connection part 25B between the opening / closing body side connection part 25A and the buffer part 25C.

[0090] The opening / closing body side connection part 25A is configured with a pair of clamping pieces 25a, 25b that clamp the upper end part 20t of the opening / closing body main body 20, and as shown in Figure 18 (c), the upper end part 20t of the opening / closing body main body 20 is clamped between the pair of clamping pieces 25a, 25b, thereby attaching the upper end part 20t of the opening / closing body main body 20 to the opening / closing body side connection part 25A. The wheel side connection part 25B is configured to include a bolt through hole 25h for passing, for example, a bolt 27 as a mounting means for mounting to the opening / closing body connection part 63 of the wheel 6. That is, as shown in Fig. 17, the wheel side connection part 25B is mounted to the opening / closing body connection part 63 of the wheel 6 using, for example, the bolt 27. Furthermore, since the multiple bolt holes 25h, 25h... are arranged in a slanted line at a predetermined interval in the left-right direction, if the opening-closing body 2 becomes misaligned, the bolt hole 25h can be selected and the connection position can be adjusted to correct the misalignment of the opening-closing body 2. The buffer section 25C is composed of a buffer mounting groove section 25D and an elastic buffer member 26 attached to the buffer mounting groove section 25D. As the buffer member 26, it is preferable to use an elastic hollow member such as rubber.

[0091] For example, when the opening / closing body main body (slat curtain) 20 is composed of a hollow body formed by roll-molding a thin aluminum plate and urethane foam filled in the hollow portion of the hollow body, the opening / closing body main body 20 has weak strength. Therefore, with conventional hanging points, there was a problem that the surface of the opening / closing body was easily scratched due to contact between the opening / closing body body wound around the rotor and the surface of the hanging point.

[0092] According to the hanging member 25 of embodiment 7, a cushioning section 25C is provided at the portion that comes into contact with the opening / closing body main body 20. As a result, the surface of the opening / closing body main body 20 is less likely to be scratched due to contact between the opening / closing body main body 20 and the cushioning member 26 of the cushioning section 25C, and the aesthetic appearance of the opening / closing body main body 20 can be maintained for a long period of time.

[0093] 9, 16 and 17, the surface of the opening / closing body connection part 63 of each wheel 6 is provided with a buffer member 63F for preventing the surface of the opening / closing body main body 20 from being scratched. In addition, in Fig. 9 and Fig. 16, the buffer member 63F is shown by hatching. As the buffer member 63F, it is preferable to use, for example, a high molecular weight polyethylene adhesive tape, which is a material with excellent abrasion resistance.

[0094] According to the winding device 3 equipped with the hanging member 25 and wheel 6 of embodiment 7, a cushioning member 63F is provided on the surface of the opening / closing body connection portion 63 of each wheel 6 of the rotating body 31, and a cushioning member 26 is provided on the hanging member 25 attached to the opening / closing body connection portion 63 of a specified wheel 6, thereby preventing the surface of the opening / closing body main body 20 from being scratched. In other words, by providing a cushioning member 63F and a cushioning member 26 on the surface of the opening / closing body connection portion 63 of each wheel 6, which was previously in contact with the surface of the opening / closing body main body 20, and on the surface of the hanging point, it is now possible to provide a winding device 3 with excellent surface protection effect for the opening / closing body main body 20.

[0095] EMBODIMENT 8 The guide rail 5 will be described with reference to FIGS. Conventionally, guide rails installed on dirt floors were configured so that the lower ends of the guide rails were embedded in the dirt floor. As a result, when performing maintenance, such as replacing the opening and closing body, the guide rails fixed to the dirt floor could not be removed, making the maintenance work difficult.

[0096] Therefore, the guide rail 5 in embodiment 8 is configured to include an upper guide rail 50 positioned above the floor E, a lower guide rail 51 whose lower end is embedded in the floor E, and a connecting member 52 that detachably connects the lower end of the upper guide rail 50 and the upper end of the lower guide rail 51.

[0097] As shown in Figure 21, the connecting member 52 is arranged so as to extend continuously from the inside of the lower end of the upper guide rail 50 to the inside of the upper end of the lower guide rail 51, and is detachably attached to the upper guide rail 50 and the lower guide rail 51 by attachment means 53 such as blind rivets, bolts and nuts.

[0098] In addition, in Figure 21, since the connecting member 52 is installed on the inside of the guide rail, the connecting member 52 should be shown with a dotted line in Figure 21. However, in Figure 21, the connecting member 52 is shown with a solid line to make the shape of the connecting member 52 clear.

[0099] Furthermore, the guide rail 5 in embodiment 8 is configured so that the plate surface of the lower end of the upper guide rail 50 and the plate surface of the upper end of the lower guide rail 51 are connected by the connecting member 52 so that they are continuously positioned on the same plane, thereby improving the design of the guide rail 5.

[0100] According to the guide rail 5 of embodiment 8, during maintenance such as when replacing the opening / closing body 2, the connecting member 52 can be removed and the upper guide rail 50 can be removed, making it easy to perform maintenance work such as when replacing the opening / closing body 2.

[0101] EMBODIMENT 9 Furthermore, conventionally, as shown in FIG. 20, an upper guide rail is attached to a structure 11A provided on a foundation B of a building BL, and because the foundation B is present below the structure 11A, the guide rail component is attached to the structure 11A using an attachment member separate from the guide rail component (guide rail main body). However, when the guide rail component and the mounting member are separate, not only does the number of parts increase, but a step is created between the surface of the guide rail component and the surface of the mounting member, which impairs the design.

[0102] Therefore, as shown in Figures 20 to 22, in the guide rail 5 of embodiment 9, the upper guide rail 50 is configured to include a guide rail component (guide rail main body) 50A and an attachment portion 50B to a structure 11A provided on the foundation B of the building BL or to a center column 11B.

[0103] That is, the upper guide rail 50 is configured as an integral body of a guide rail component 50A and a mounting portion 50B, and the mounting portion 50B is configured in a shape that does not interfere with the foundation B provided below the frame 11A. In other words, the upper guide rail 50 attached to the main body 11A is configured such that the guide rail component 50A and the mounting portion 50B are constructed as a single unit, and the lower end side of the mounting portion 50B is provided with a foundation interference avoidance portion 49 removed so as not to interfere with the foundation B.

[0104] According to the guide rail 5 of embodiment 9, the upper guide rail 50 attached to the main body 11A has the above-mentioned configuration, so that the number of parts of the guide rail 5 can be reduced, the workability of attaching the guide rail to the main body 11A of the building can be improved, and the design of the guide rail 5 can be improved.

[0105] In addition, since the mounting portion 50B to the center pillar 11B does not interfere with the foundation E, it is sufficient that the mounting portion 50B does not include the foundation interference avoidance portion 49. That is, the upper guide rail 50 attached to the center pillar 11B may be configured such that the guide rail component 50A and the attachment portion 50B not including the foundation interference avoidance portion 49 are integrated together.

[0106] In addition, the configuration in which the guide rail component 50A and the mounting portion 50B are constructed as a single unit and the shape of the mounting portion 50B is designed so as not to interfere with the foundation B provided below the main body 11A can also be applied to general guide rails that are not divided into an upper guide rail 50 and a lower guide rail 51.

[0107] In the above, examples of the reinforcing member 8 include reinforcing members 8A, 8B with recesses and reinforcing member 8C with a curved surface. However, the reinforcing member may be any member that is arranged to extend from the peripheral side of the peripheral side through hole 62 on at least one of the plate surfaces 60a, 60b of the circular base plate 60 of the wheel 6 in a direction along the central axis of the connecting member 7, can distribute the welded portion that is the fixed part between the connecting member 7 and the wheel 6 in a direction along the central axis 7C of the connecting member 7, and can distribute stress in a direction along the central axis 7C of the connecting member 7. In other words, the reinforcing member used in the present invention may be any member that functions as a weld piece that can distribute the welded portion, which is the fixed portion between the connecting member and the wheel, in a direction along the central axis of the connecting member.

[0108] Note that a rod-shaped member other than a circular pipe may be used as the connecting member 7. For example, a rod-shaped member such as a long flat plate (flat bar) or a square pipe may be used as the connecting member 7. In this way, when a rod-shaped member other than a circular tube is used as the connecting member 7, the shape of the peripheral edge side through hole 62 may be made to correspond to the cross-sectional shape of the connecting member 7.

[0109] In the above, an example was given of an opening and closing device in which the rotational force imparting means 32 is provided with a winding device 3 having a drive unit 32A and a spring 32B that imparts rotational force to a rotating body, but the opening and closing device of the present invention may be provided with a winding device configured with at least one rotational force imparting means selected from a drive unit (electric rotational force imparting means) and a spring (manual rotational force imparting means). That is, the winding device of the opening and closing device of the present invention may be configured to have only an electric torque imparting means as the torque imparting means 32, or may be configured to have only a manual torque imparting means as the torque imparting means 32. In other words, the opening and closing device of the present invention may have any configuration as long as it includes a winding device having at least a winding function for winding up the connected opening and closing body. [Explanation of symbols]

[0110] 1 Switchgear 2 Opening and closing body 3 Winding device 5 Guide rail 5a Guide groove 6,6A,6B Wheels 7 Connecting members 7C Central axis of connecting member (central axis of circular pipe) 8 Reinforcement members 8A, 8B Reinforcement member with recess 8C Curved surface reinforcement member 10 Opening 25 Hanging parts 26 Cushioning material 30 Shaft 30A Wiring inlet hole 30C Shaft center axis 31 Rotating Body 32 Rotational force imparting means 32A Drive Unit 32B spring (torsion coil spring) 32W Wiring 34 Internal gear section 34B Internal gear parts 34C Torque transmission member for diameter expansion 35 Motor (drive source) 36 Rotation Axis 37 Output gear 40L Left bracket 40R Right bracket 50 Upper guide rail 50A Guide rail components 50B Mounting part 51 Lower guide rail 52 Connecting member 60 Circular Boards 60a, 60b: Surface of circular substrate 61 Central through hole 62 Periphery side through hole 63 Opening and closing body connection part 63F Cushioning material 64C rotating cylinder 66 Bearing 67 Bearing cover 68 One side boss 69 Other side boss 72 Cotter pin 73 Washer 74 Drymet Washer 86 Curved inner surface 87 Curved outer surface

Claims

1. A winding device for winding up an opening / closing body for opening and closing an opening, The vehicle has a shaft, a plurality of wheels rotatably mounted on the shaft with the central axis of the shaft as a rotation center, a plurality of connecting members connecting the plurality of wheels to each other, and a rotating body constituted by the plurality of wheels and the plurality of connecting members, The wheel includes a circular substrate, a central through hole formed in a central portion of the circular substrate, a plurality of peripheral through holes formed at a predetermined interval along a peripheral portion of the circular substrate, and an opening / closing body connection portion to which one end of the opening / closing body is connected; A winding device in which a shaft passes through a central through hole of a plurality of wheels, the plurality of wheels are arranged at intervals along the central axis of the shaft, and a plurality of connecting members are arranged to extend along the central axis of the shaft and pass through peripheral through holes of each wheel, A winding device characterized in that it includes a reinforcing member extending from the peripheral side of the peripheral side through hole on at least one of the two plate surfaces of the circular base plate of the wheel in a direction along the central axis of the connecting member, and the connecting member and the wheel are fixed by welding via the reinforcing member.

2. 2. The winding device according to claim 1, wherein the reinforcing member and the wheel are fixed to each other by welding.

3. The connecting member is formed of a circular tube having a circular cross section, The winding device described in claim 2, characterized in that the reinforcing member is a recessed reinforcing member having a recess extending in a direction along the central axis of the circular tube constituting the connecting member, and the inner surface of the recess of the recessed reinforcing member and the outer peripheral surface of the circular tube are fixed by welding.

4. The connecting member is formed of a circular tube having a circular cross section, The winding device described in claim 1, characterized in that the reinforcing member is a curved surface reinforcing member having a curved inner surface and a curved outer surface corresponding to the curvature of the outer peripheral surface of the circular tube constituting the connecting member, and the curved inner surface of the curved surface reinforcing member and at least a portion of the outer peripheral surface of the circular tube are fixed by welding.

5. a reinforcing member having a recess extending in a direction along the central axis of the circular pipe constituting the connecting member; A winding device as described in claim 4, characterized in that the reinforcing member with recesses and the wheel are fixed by welding, the inner surface of the recess of the reinforcing member with recesses and the outer peripheral surface of the circular tube are fixed by welding, and the inner surface of the recess of the reinforcing member with recesses and the curved outer surface of the reinforcing member with curved surface are fixed by welding.

6. The connecting member is formed of a circular tube having a circular cross section, the reinforcing member is a reinforcing member with a recess, the reinforcing member having a recess extending from a peripheral side of the peripheral side through hole in one of both plate surfaces of the circular base plate of the wheel in a direction along the central axis of the circular tube constituting the connecting member, The winding device described in claim 2, characterized in that the inner surface of the recess of the recessed reinforcing member and the outer peripheral surface of the circular tube are fixed by continuous welding in a direction along the central axis of the circular tube, and the outer peripheral surface of the circular tube and the peripheral side of the peripheral side through hole in the other of the two plate surfaces of the circular base plate of the wheel are fixed by welding.

7. a drive unit including a drive source fixed to a shaft, an output gear provided on a tip side of a rotating shaft rotated by the drive source, and an internal gear portion provided to mesh with the output gear; The internal gear portion is configured to include an internal gear member and a diameter expansion torque transmission member, The internal gear member is constituted by an annular plate, and an internal gear is formed on a peripheral surface of a central through hole of the annular plate, the diameter expansion torque transmission member is configured by an annular plate having an outer diameter dimension larger than the outer diameter dimension of the annular plate of the internal gear member, and is provided with a torque transmission portion on the outer circumferential side of the annular plate for transmitting rotational torque to the connecting member; The winding device according to claim 1, characterized in that the internal gear member is provided so that the central axis of the annular plate constituting the internal gear member coincides with the central axis of the shaft, and the diameter expansion torque transmission member is attached to the internal gear member so that the center of the annular plate constituting the internal gear member coincides with the center of the annular plate constituting the diameter expansion torque transmission member to form an internal gear portion, and the torque transmission portion of the diameter expansion torque transmission member is connected to the connecting member, so that by rotating the output gear, the internal gear portion rotates around the central axis of the shaft, and the rotational force of the internal gear portion is transmitted to the connecting member to rotate the rotating body.

8. The shaft is composed of a hollow tube having a circular cross section. The drive source is fixed to a shaft portion located between a one-end side wheel provided on one end side of the shaft and a second wheel located from the one end side toward the other end side, a wiring lead-in hole is provided in the shaft portion at a position near the wheel on one end side, The winding device according to claim 7, characterized in that wiring including a power line of the drive source and a control signal line of a control component for controlling the drive source is pulled into the shaft through a wiring pull-in hole and pulled out to the outside from an opening at one end of the shaft.

9. The wheel includes a rotating cylinder configured to extend from a circular through hole that constitutes a central through hole in a direction along a central axis of the circular through hole, The rotating cylinder includes a bearing and a bearing cover. the bearing cover is configured by combining an annular bottom plate portion having a central through hole for passing a shaft therethrough, and a cylindrical portion provided so as to extend from the outer peripheral edge of the annular bottom plate portion in a direction along the central axis of the annular bottom plate portion, and includes a bearing accommodating portion configured by the cylindrical portion and the annular bottom plate; A winding device as described in claim 1, characterized in that the bearing is arranged on one of the two plate surfaces of the circular base plate of the wheel so that its central axis coincides with that of the circular through hole of the wheel, and the bearing is accommodated in the bearing accommodating portion of the bearing cover so that the central axis of the annular bottom plate portion of the bearing cover coincides with that of the circular through hole of the wheel.

10. a one-side boss formed of a cylindrical body extending from an edge of a central through-hole in an annular bottom plate portion of the bearing cover, and a second-side boss formed of a cylindrical body extending from an edge of the circular through-hole on the other of both plate surfaces of the circular base plate of the wheel, 10. The winding device according to claim 9, wherein the shaft is configured to pass through the boss on one side, a bearing hole of the bearing, a central through hole in the annular bottom plate portion of the bearing cover, and the boss on the other side.

11. a torsion coil spring, a shaft is provided so as to pass through a hollow portion of the spiral of the torsion coil spring and a central through hole of a predetermined wheel, one end of the torsion coil spring is fixed to the shaft, and the other end of the torsion coil spring is fixed to the predetermined wheel, The winding device according to claim 1, characterized in that it has a boss formed of a cylinder extending from the edge of the central through hole of a specified wheel, a shaft passing through the boss has a split pin provided so as to pass through the shaft so as to intersect with the central axis of the shaft, and a plurality of drymet washers are provided between the split pin and the extended end of the boss of the specified wheel.

12. An opening and closing device having an opening and closing body that opens and closes an opening, A winding device according to any one of claims 1 to 11, a left bracket to which a left end of the shaft of the winding device is fixed; a right bracket to which a right end of the shaft of the winding device is fixed; An opening / closing body having one end attached to an opening / closing body connection portion of a wheel of a winding device; a guide rail having a guide groove for guiding the left and right width direction ends of the opening / closing body along the opening / closing direction of the opening / closing body; An opening and closing device comprising:

13. One end of the opening / closing body and an opening / closing body connection portion of the wheel of the winding device are connected via a suspension member, The opening and closing device according to claim 12, wherein the suspension member is provided with a shock absorbing member at a portion that comes into contact with the opening and closing body that is wound around the rotating body.

14. The opening and closing device according to claim 13, characterized in that a shock-absorbing material is provided on a surface of the opening and closing body connection portion of the wheel of the winding device.

15. The opening and closing device according to claim 12, characterized in that the guide rail comprises an upper guide rail positioned above the earthen floor, a lower guide rail whose lower end is embedded in the earthen floor, and a connecting member that detachably connects the lower end of the upper guide rail and the upper end of the lower guide rail.

16. The opening and closing device according to claim 15, characterized in that the plate surface of the lower end of the upper guide rail and the plate surface of the upper end of the lower guide rail are connected by a connecting member so as to be continuously positioned on the same plane.

17. The guide rail includes a guide rail component and a mounting portion that is attached to a building frame, 13. The opening and closing device according to claim 12, wherein the mounting portion is configured in a shape that does not interfere with a foundation provided below the structure.

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