JP2003176677A - Winding shaft structure in winding shaft device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a winding shaft structure in a winding shaft device, which allows offset of a plurality of shaft members when a wind-up shaft is formed of the shaft members connected together in series, and effectively transmits rotational force of the shaft members. <P>SOLUTION: According to the winding shaft structure in the winding shaft device, the wind-up shaft 1 for winding-up and winding-off a shutter curtain as a curtain member, is formed by axially connecting the plurality of shaft members 1A, and the mutually adjacent shaft members 1A has an Oldham coupling 20 interposed therebetween, as an offset shaft rotational force transmitting means. Therefore, the Oldham coupling 20 functions to connect the mutually adjacent shaft members 1A together, and a floating cam 23 having linear projections 23A, 23B slidably engageable with grooves 21A, 22A of coupling main bodies 21, 22, respectively, performs floating motion, to thereby transmit the rotational force between the shaft members 1A containing offset shafts. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a winding shaft in a winding shaft device equipped with a winding shaft for winding and unwinding a curtain member, and the winding shaft includes a plurality of shaft members. It can be used when it is formed by connecting in the axial direction, and is applied to a take-up shaft in a take-up shaft device such as a shutter device, a smoke proof curtain device, a roll brand device, a roll screen device, and an awning device. It is possible.

[0002]

BACKGROUND ART In a shutter device that is a winding shaft device for winding and unwinding a shutter curtain, which is a curtain member, with a winding shaft, when the shutter curtain has a large span, the winding is performed accordingly. The shaft must be lengthened. Since it is difficult to obtain a winding shaft having a long size with one shaft, a winding shaft having a long size is obtained by connecting a plurality of shaft members in the axial direction.

[0003]

However, in the case where a winding shaft having a lengthened dimension is obtained by connecting a plurality of shaft members in the axial direction as described above, the axial centers of the shaft members adjacent to each other are accurately adjusted. It is difficult to connect according to. Therefore, it is required that the shaft members can be connected to each other and the rotational force can be transmitted even if the shaft center is deviated.

An object of the present invention is to allow the axial displacement of the shaft members and to prevent the rotational force when the winding shaft for winding and unwinding the curtain member is formed by connecting a plurality of shaft members in the axial direction. An object of the present invention is to provide a winding shaft structure in a winding shaft device that can effectively perform transmission.

[0005]

A winding shaft structure in a winding shaft device according to the present invention has a winding shaft having a curtain member and a winding shaft for winding and unwinding the curtain member. In the device, a winding shaft for winding and unwinding the curtain is formed by connecting a plurality of shaft members in an axial direction, and the shaft members adjacent to each other allow a shaft misalignment to generate a rotational force. It is characterized in that they are connected via a shaft center deviation rotational force transmitting means for transmitting.

In the winding shaft structure of this winding shaft device,
Since the shaft members that are arranged adjacent to each other in the axial direction to form the winding shaft are connected to each other through the shaft center deviation rotational force transmission means that allows the shaft center deviation and transmits the rotational force. Even if there is axial misalignment between the shaft members, the rotational force is transmitted while the axial misalignment rotational force transmitting means allows the axial misalignment. In other words, even if there is axial misalignment between the shaft members, the rotational force is transmitted between the axial members while the axial misalignment is substantially adjusted or absorbed. It is possible to form a long-length winding shaft for winding and unwinding a curtain member having a large span without accurately connecting the shaft members with their axis centers aligned.

In the above, the shaft center offset rotational force transmitting means may be an Oldham coupling, a universal joint, an elastic body such as a coil spring or rubber, and a sprocket attached to the ends of adjacent shaft members. A sprocket or a double chain (also known as a chain coupling) in which a double chain is meshed may be used, and any axis misalignment rotational force transmission means can be adopted.

Further, the winding shaft to which the present invention is applied may be a shaft which is installed horizontally or substantially horizontally, or may be a shaft which is installed vertically or substantially vertically, and has an inclination angle with respect to both the horizontal direction and the vertical direction. It may have an axis.

Regardless of which of these winding shafts, the shaft members adjacent to each other are connected to each other via the shaft center offset rotational force transmitting means, so that a plurality of shafts forming the winding shaft are provided. It is preferable that at least one shaft member of the members is subjected to a maintaining force from a maintaining means for maintaining the position of the shaft member at a constant or substantially constant position.

Thus, it is possible to prevent the shaft member from swinging around when the shaft member is rotated by the rotational force transmitted, and to wind and unwind the curtain member as required.

Further, the winding shaft is a shaft which is laid horizontally or substantially horizontally, and the winding shaft is formed by connecting two shaft members, each of which receives a maintaining force from the maintaining means. In this case, each of these shaft members is a bracket for rotatably supporting the shaft member, and the maintaining means arranged axially away from the bracket. It is preferable that one shaft member is provided to support the shaft member from the bottom to the top.

According to this, the respective shaft members are supported by the brackets and the supporting means which are arranged apart from each other in the axial direction, and these shaft members can be rotated while preventing them from swinging around at the time of transmitting the rotational force. At the same time, each shaft member can be supported with a small number of members, one bracket and one supporting means.

Further, the winding shaft is a shaft which is laid horizontally or substantially horizontally, and the winding shaft is formed by connecting at least three shaft members, each of which receives a maintaining force from the maintaining means. In this case, of these shaft members, one bracket for rotatably supporting the shaft members at both ends of each of the shaft members, and the retaining means arranged apart from the bracket in the axial direction. In this axial direction, one support member is provided to support the shaft member from the bottom to the top, and the remaining shaft members are the maintaining means and are separated from each other by two in the axial direction. It is preferable that the shaft member is supported by a supporting means that supports the shaft member from the bottom to the top.

According to this, even if the winding shaft, which is a shaft that is laid horizontally or substantially horizontally, is formed by connecting at least three shaft members, each shaft member swings around when transmitting the rotational force. The shaft members at both ends can be supported by a small number of members, one bracket and supporting means, and the remaining shaft members can be supported by a small number of two supporting means. Can be supported by the number.

As described above, when the shaft member forming the winding shaft is provided with the supporting means for supporting the shaft member from the bottom to the top, the supporting means is a shaft member such as a roller or a ball. It may be configured to have a rotating member that rotates integrally with the above, or may be configured to have a member that does not rotate.

When the supporting means is constituted by a rotary member which rotates integrally with the shaft member, the rotary member which comes into line contact or point contact extending in the axial direction with the curtain member wound around the shaft member. A single supporting means may be formed by arranging a plurality of the shaft members in the circumferential direction of the shaft member, and a plurality of rotating members arranged in the peripheral direction of the shaft member and these rotating members. A belt-shaped member such as a belt may constitute one supporting means, and the shaft member may be placed on the belt-shaped member. As a result, the shaft member can be supported upward while effectively preventing the shaft member from falling off the supporting means.

Further, when the supporting means is constituted by a member which does not rotate, the non-rotating member may be a member which comes into line contact or point contact extending in the axial direction with the curtain member wound around the shaft member. However, it is preferable that the shaft member is curved upward in a concave shape and comes into surface contact with the curtain member wound around the shaft member to support the shaft member upward. According to this, the shaft member can be supported upward while effectively preventing the shaft member from falling off from the supporting means.

Further, the winding shaft formed by connecting a plurality of shaft members in the axial direction via the shaft center offset rotational force transmitting means may be one in which the rotational force is transmitted from one end. Of course, the rotational force may be transmitted from both ends. The rotational force may be transmitted to the winding shaft both at the time of winding the curtain member and at the time of unwinding the curtain member, or may be transmitted to the winding shaft only at one of these times.

Further, the present invention described above can be applied to any winding shaft device that winds and unwinds the curtain member by the winding shaft. Includes smoke curtain devices, roll branding devices, roll screen devices, awning devices, and the like.

When the present invention is applied to a shutter device, the shutter device may be a sheet type shutter device in which all or a main part of a shutter curtain, which is a curtain member, is formed by a sheet, and is formed by a slat. Slat type shutter device, may be a panel type shutter device formed by a panel, a pipe type shutter device formed by a pipe and a link,
A composite shutter device in which at least two of them are combined may be used, and the present invention can be applied to any type of shutter device.

In the case where the shutter device is a sheet type shutter device, the sheet forming at least a part of the shutter curtain may or may not have fire resistance.

That is, the shutter device according to the present invention can be applied also to a disaster prevention shutter device for feeding a shutter curtain having fire resistance from a winding shaft in order to form a fireproof section in the event of a fire, and opening portions such as entrances and exits. It can also be applied to a shutter device for doorways for opening and closing with a shutter curtain that does not have fire resistance.

Further, the shutter device according to the present invention can be applied as a shutter device for a building installed in a building, and also as a shutter device for a non-building installed in a structure such as an underground mall or a ship.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an entire shutter device according to the present embodiment in which a curtain member is a shutter curtain. This shutter device is for a large opening for forming a disaster prevention section in a building when a fire occurs. It is a shutter device for disaster prevention.

The winding shaft 1 of this disaster prevention shutter device is
The ceiling member 2 is arranged in a ceiling space 4 partitioned from the indoor space 3 with the horizontal direction as the axial direction, and both axial ends of the winding shaft 1 are rotatably supported by brackets 5 as supporting members. . These brackets 5 are connected to a building frame 6 existing in the space 4 above the ceiling. The winding shaft 1 is connected to the upper end of a shutter curtain 8 whose lower end is a seat plate 7, and is a sheet made of glass cloth or silica cloth, or a sheet formed by applying a fireproof paint or the like to this sheet. The shutter shutter 8 of the type is normally wound around the winding shaft 1. The shutter curtain 8 is unwound and wound up from the winding shaft 1 by the forward and reverse rotations of the winding shaft 1, and both ends in the width direction of the shutter curtain 8 are columns and walls formed on both left and right sides of the indoor space 3. Since it is slidably inserted into the guide rail 10 attached to the building frame 9 of the building, etc. by the retaining member, it is formed in the ceiling member 2 by the forward and reverse rotation of the winding shaft 1. The movement of the shutter curtain 8 that passes through the opening and closes and opens and closes is performed by moving these guide rails 1
It is performed with 0 guidance.

An opening / closing device 11 composed of a combination of a motor and a brake is attached to one of the pair of left and right brackets 5, and the opening / closing device 11 is a winding shaft 1.
Is connected via a transmission means 12. By operating a manual lever (not shown) in the event of a fire, or by a sensor (not shown) detecting smoke, heat, or the like, the brake of the opening / closing device 11 is released by a signal from the control device, whereby the shutter curtain 8 loses its own weight. Then, the winding shaft 1 is rotated and lowered. Further, by driving the motor of the opening / closing device 11, the shutter curtain 8 is wound around the winding shaft 1 by the rotation of the winding shaft 1.

In the above description, the winding shaft 1, which is rotatably held by the brackets 5 at both ends in the axial direction and laid horizontally in the ceiling space 4, has a plurality of shaft members 1 having the same diameter.
A, in the embodiment shown in FIG. 1, it is formed by connecting three shaft members 1A in series in the axial direction, and this connection is achieved by a shaft center offset rotational force transmitting means between shaft members 1A adjacent to each other. It is made by connecting through an Oldham coupling 20. Also, each shaft member 1A
Is provided with support means 30 for supporting the shaft members 1A from the bottom to the top, and each of the shaft members 1A at both ends of the three shaft members 1A holds the shaft member 1A rotatably. It is supported by one bracket 5 and one supporting means 30 that is axially separated from the bracket 5, and the central shaft member 1A is supported by two supporting means 30 that are axially separated from each other. Has been done.

The structures of the respective supporting means 30 are the same, and FIG. 2 is a sectional view taken along the line S2-S2 of FIG. 1, showing the structure of the supporting means 30. The support means 30 includes a holding member 31 coupled to the building body 6 of the space above the ceiling 4, a roller holder 32 attached to the holding member 31 on the lower side of the shaft member 1A, and a shaft member 1A attached to the roller holder 32. And two rollers 33 which are arranged in parallel with the shaft member 1A in the circumferential direction of the shaft member 1A. These rollers 33 that make the winding shaft 1 face up from below.
Is the shutter curtain 8 wound around the winding shaft 1.
And the winding shaft 1 come into line contact with each other in the axial direction, and rotate together with the winding shaft 1 to support the winding shaft 1.

Since the roller holder 32 of the supporting means 30 according to the present embodiment is attached to the holding member 31 by the rotation center shaft 34 by a bolt having the vertical direction as the axial direction, the rotation center shaft 34 is the center. Thus, the directions of these rollers 33 naturally follow the axial direction of the shaft member 1A mounted and supported on the two rollers 33.

FIG. 3 is an exploded perspective view of the Oldham coupling 20 which connects the shaft members 1A to each other in the axial direction. The Oldham coupling 20 is coupled to the mutually opposing end faces of two axial members 1A that are axially opposed to each other, and is formed into a disc-shaped coupling body 21 or 22 having the same or substantially the same diameter as the axial member 1A. , These coupling bodies 21,2
2, a floating cam 2 formed in a disk shape having a smaller diameter than the coupling bodies 21 and 22.
3 and 3. Grooves 21A and 22A extending in directions perpendicular to each other are formed on the end faces of the coupling bodies 21 and 22 facing the floating cam 23, and both end faces of the floating cam 23 facing the coupling bodies 21 and 22 are formed. The projections 23A and 23B slidably engaged with the grooves 21A and 22A are formed.

The Oldham coupling 20 is provided at two places which are connecting portions of a total of three shaft members 1A forming the winding shaft 1. Of these shaft members 1A,
As described above, the two shaft members 1A at both ends are supported by the brackets 5 and the supporting means 30 one by one, and
When the central one shaft member 1A is supported by the two supporting means 30, the grooves 21A, 2 of the coupling bodies 21, 22 are provided.
The ridges 23A and 23B of the floating cam 23 are inserted and engaged with 2A.

As a result, the three shaft members 1A in total are connected through the Oldham coupling 20, and the two shaft members 1A at both ends are supported by the brackets 5 and the supporting means 30, respectively. One central shaft member 1A is supported by two supporting means 30. At this time, the bracket 5 and the supporting means 30 serve as a maintaining means for giving the shaft member 1A a maintaining force for maintaining the shaft member 1A at a constant height position, and receive the maintaining force from these maintaining means, respectively. The shaft member 1A is supported at the respective height positions determined by the bracket 5 and the support means 30 and the two support means 30 and the left and right horizontal positions in FIG.

FIG. 4 shows the rotation operation of the Oldham coupling 20 when the shutter curtain 8 is extended or when the winding shaft 1 is rotated by the driving force from the switch 11 shown in FIG. It is the figure which showed 45 degrees in order of B), (C), and (D). As can be seen from FIG. 4, even if the coupling bodies 21 and 22 are misaligned with each other, the floating cam 23 that performs a floating motion.
The rotational force is transmitted between the shaft members 1A connected by the Oldham's coupling 20 via the two shaft members 1 for transmitting the rotational force.
It is performed only by stopping and rotating A at each fixed position.

Therefore, according to the present embodiment described above, the three shaft members 1 are formed to form the long-sized winding shaft 1.
A is connected in the axial direction, and even if there is a misalignment between the shaft members 1A that are adjacent to each other, the shutter curtain 8 is wound between the shaft members 1A and wound around the winding shaft 1 and is fed out. Rotational force can be transmitted.

Therefore, even if the shutter curtain 8 has a large span with a large left-right dimension, it is not necessary to form the long-size winding shaft 1 by one long shaft, and a plurality of shaft members 1A can be axially formed. It is possible to form a long-sized winding shaft 1 by connecting the winding members 1 in series with each other, and it is not necessary to accurately align the shaft members 1A with each other. As a result, the construction work of the winding shaft 1 can be easily performed. become.

Further, the three shaft members 1 forming the winding shaft 1
Of A, the two shaft members 1A at both ends may be supported by only one bracket 5 and the supporting means 30, and the central shaft member 1A may be supported by only two supporting means 30. Therefore, the number of members required to support each shaft member 1A at a fixed position can be reduced, and the support structure can be simplified. Moreover, each shaft can be transmitted when the rotational force is transmitted by the Oldham coupling 20. It is possible to prevent the member 1A from swinging around.

Further, the supporting means 30 includes two rollers 3
3 has a structure in which the shaft member 1A is simply placed on top of the shaft member 3. Therefore, at the time of construction work in which the winding shaft 1 is installed in the ceiling space 4, the shaft member 1A is attached to the bracket 5 for the shaft members 1A at both ends. It suffices to carry out the work of supporting and placing it on the two rollers 33. For the central shaft member 1A, only the work of placing the shaft member 1A on each of the two rollers 33 of the two supporting means 30. These operations can be performed easily.

The take-up shaft 1 is replaced with the two shaft members 1 at both ends.
In the case of forming only A, these shaft members 1A may be connected by the Oldham coupling 20 and each of these shaft members 1A may be supported by only one bracket 5 and one supporting means 30.

When the winding shaft 1 is formed with two or more shaft members 1A excluding the shaft members 1A at both ends, each of the two or more shaft members 1A is axially arranged. It may be supported by two supporting means 30 provided separately.

FIG. 5 shows an embodiment in which a universal joint 40 is used as the shaft center deviation rotational force transmitting means for connecting the adjacent shaft members 1A to each other. That is, the shaft center deviation rotational force transmitting means in this embodiment includes U-shaped holder members 41 and 42 which are attached to the mutually opposing end surfaces of the adjacent shaft members 1A with an angle deviation of 90 degrees.
These holder members 41, 42 have a total of four end portions 43.
A is a universal joint 40 composed of a cross-shaped pin 43 rotatably held.

Since the universal joint 40 transmits the rotational force even if the shafts of the shaft members 1A constituting the winding shaft 1 are not aligned in a straight line, the shafts of the three shaft members 1A in total are accurate. By connecting the shaft members 1A without aligning the axes, the winding shaft 1 having a long dimension can be formed.

In this embodiment, each of the shaft members 1A at both ends is supported by the bracket 5 and the supporting means 30, one by one, as in the above embodiment, but the central shaft member 1A is It is not necessary to support by the supporting means 30, and this shaft member 1A may be supported by the shaft members 1A at both ends via the universal joint 40. When the number of shaft members 1A excluding the shaft members 1A at both ends is two or more, the same applies to these two or more shaft members 1A.

FIG. 6 shows an embodiment in which the axial center offset rotational force transmitting means is a coil spring 50 which is an elastic body. That is, in this embodiment, the holder members 51 and 52 joined to both ends of the coil spring 50 by welding or the like are coupled to the end surfaces of the adjacent shaft members 1A which are opposed to each other, and therefore the shaft members 1A are connected to each other by the coil. They are connected via a spring 50. In particular, in this embodiment, the coil spring 50 is a double-coil spring having two inner and outer springs composed of two springs 50A and 50B.
The spiral directions of B are opposite to each other.

The coil spring 50 has a function of transmitting the rotational force by its own elastic force, and transmits the rotational force even when the elastic wobbling motion is performed. Therefore, the axial center is deviated between the adjacent shaft members 1A. Even if there is, the rotational force can be transmitted.

When transmitting the rotational force through the coil spring, a compressive force or a stretching force is generated in the coil spring depending on the direction of the rotational force. However, the coil spring 50 of this embodiment has a spiral structure. Two springs 50 whose directions are opposite to each other
Since it is a double coil spring consisting of A and 50B,
No matter which direction the rotational force is, the two springs 50A,
A compressive force is generated in one of the 50B and an extension force is generated in the other, and these cancel each other out, so that it is possible to prevent the distance between the shaft members 1A from changing.

The shaft center offset rotational force transmitting means according to the embodiment shown in FIG. 7 is a rubber 60 which is an elastic body. That is, in this embodiment, the holder members 61 and 62, which are joined to both ends of the rubber 60 by welding or the like, are joined to the end faces of the adjacent shaft members 1A that face each other. Are connected via.

Since the rubber 60 is an elastic body like the coil spring, even if there is a shaft misalignment between the adjacent shaft members 1A, the rotational force is transmitted between these shaft members 1A.

The shaft center offset rotational force transmitting means according to the embodiment shown in FIG. 8 is a sprocket-double chain 70. That is, in this embodiment, the sprockets 71 and 72 are joined by the bolts 74 to the end surfaces of the adjacent shaft members 1A facing each other, and the sprockets 71 and 72 are
The ring-shaped double chain 73 around the entire circumference of the sprockets 71 and 72 meshes with each other, and the double chain 73
Has two portions that mesh with the sprockets 71, 72. Therefore, the shaft members 1A are connected to the sprockets 71 and 72 via the double chain 73.

Since the sprockets 71 and 72 and the double chain 73 mesh with each other with a play, the rotational force can be transmitted between the shaft members 1A having a shaft center deviation smaller than the play.

In the embodiment shown in FIGS. 6 to 8 described above, when the winding shaft 1 is formed by connecting a total of three shaft members 1A, one shaft member 1A having two ends is provided. It suffices to support only the bracket 5 and the supporting means 30 respectively, and the central shaft member 1A may be supported by only two supporting means 30. Further, the central shaft member 1A may not be supported by the supporting means 30, but may be supported by the shaft members 1A at both ends via the shaft center deviation rotational force transmitting means. Further, when the winding shaft 1 is formed with two or more shaft members 1A other than the shaft members 1A at both ends, the two or more shaft members 1A are provided separately in the axial direction. Alternatively, it may be supported by two supporting means 30 or may not be supported by the supporting means 30 and may be supported directly by the shaft members 1A at both ends via the shaft center offset rotational force transmitting means or via another shaft member 1A. You may support indirectly.

Further, the winding shaft 1 is provided with two shaft members 1A at both ends.
When it is formed by only one, each of these shaft members 1A may be supported by only one bracket 5 and one supporting means 30.

[0052]

According to the present invention, when the winding shaft for winding and unwinding the shutter curtain is formed by connecting a plurality of shaft members in the axial direction, the axial force of the shaft members is allowed to be offset and the rotational force is increased. It is possible to achieve the effect that the transmission of

[Brief description of drawings]

FIG. 1 is a front view showing an entire shutter device which is a winding shaft device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line S2-S2 of FIG. 1 showing the structure of the supporting means.

FIG. 3 is an exploded perspective view showing an Oldham coupling which is a shaft center offset rotational force transmitting means shown in FIG. 1.

FIG. 4 shows the operation of the Oldham coupling when the winding shaft rotates in the order of (A), (B), (C) and (D).
It is the figure which showed each time.

FIG. 5 is a diagram showing an embodiment in which the shaft center offset rotational force transmitting means is a universal joint.

FIG. 6 is a cross-sectional view of an essential part showing an embodiment in which the shaft center deviation rotational force transmitting means is a coil spring.

FIG. 7 is a cross-sectional view of essential parts showing an embodiment in which the shaft center deviation rotational force transmitting means is rubber.

FIG. 8 is a cross-sectional view showing an embodiment in which the shaft center offset rotational force transmitting means is a sprocket / double chain.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Winding shaft 1A Shaft member which forms a winding shaft 5 Bracket 8 Shutter curtain which is a curtain member 11 Opening / closing machine 20 Oldham coupling 30 which is a shaft misalignment rotational force transmission means A universal joint 50 A coil spring 60 which is an axial misalignment rotational force transmission means 60 A rubber which is an axial misalignment rotational force transmission means A sprocket / double chain which is an axial misalignment rotational force transmission means

Claims (4)

[Claims] 1. A winding shaft device having a curtain member and a winding shaft for winding and unwinding the curtain member, wherein the winding shaft connects a plurality of shaft members in an axial direction. And a shaft member that is adjacent to each other and is connected to each other via a shaft center deviation rotational force transmission unit that allows a shaft center displacement and transmits a rotational force. Winding shaft structure. 2. The winding shaft structure in the winding shaft device according to claim 1, wherein at least one shaft member of the plurality of shaft members has a constant or substantially constant position of the shaft member. A winding shaft structure in a winding shaft device, which receives a maintaining force from a maintaining means for maintaining a position. 3. The winding shaft structure of the winding shaft device according to claim 2, wherein the winding shaft is a shaft that is laid horizontally or substantially horizontally, and each of the winding shafts is the maintaining means. Is formed by connecting at least three of the shaft members that receive a sustaining force from each of the shaft members, and each of the shaft members at both ends is one bracket that rotatably supports the shaft member, The retaining means is disposed axially away from the bracket, and is 1 in the axial direction.
And a supporting means for supporting the shaft member from the bottom to the top, and the remaining shaft member is the maintaining means, and two shaft members are provided apart from each other in the axial direction to support the shaft member from the bottom to the top. A winding shaft structure in a winding shaft device, wherein the winding shaft structure is supported by a supporting means for supporting. 4. A winding shaft structure for a winding shaft device according to any one of claims 1 to 3, wherein the shaft center offset rotational force transmitting means is an Oldham coupling. Winding shaft structure.