WO2018143060A1

WO2018143060A1 - Winding device

Info

Publication number: WO2018143060A1
Application number: PCT/JP2018/002382
Authority: WO
Inventors: 雅弘島崎; 真行中川
Original assignee: 株式会社ジャパーナ
Priority date: 2017-02-01
Filing date: 2018-01-26
Publication date: 2018-08-09
Also published as: JP2018121920A

Abstract

The present invention provides a winding device wherein a structure inside the winding device is simplified and wherein the winding device uses a reduced number of parts and has high strength, durability, and reliability. The winding device is provided with: a drum 4 for winding a string; a base member 3 provided with a drum-containing section 33 which has a closed-end circular cylindrical shape and which contains the drum 4; an annular gear 36 formed on the outer peripheral surface of the drum-containing section 33; a dial 5 disposed at a position where the dial 5 rotates about the same rotation center as the drum 4, and physically connected to the drum 4 so as to be capable of rotationally driving the drum 4; and a pawl integral with the lower surface of the dial 5 and engaging with the annular gear 36. The winding device 1 is characterized in that the annular gear 36 and the pawl are capable of controlling the rotation of the dial 5.

Description

Winding device

The present invention relates to a winding device capable of winding a string. For example, in addition to athletic shoes used for golf, jogging, etc., various types of shoes can be tightened, or a string for closing a bag can be tightened. The present invention relates to a winding device suitable for tightening a string of a protective device to be worn on the body or tightening a string of a hat.

Conventionally, as a winding device suitable for tightening a string, the string can be wound around the drum by rotating a dial (disk-shaped knob), and the dial and the drum are engaged by operating the dial. A winding device that can release the state and release the tightening of the string has been proposed (Patent Documents 1 to 30 below).

In a conventional winding device, if an annular gear is formed on the inner peripheral surface of a drum storage portion formed in a bottomed cylindrical shape, a malfunction may occur if foreign matter enters the drum storage portion. There is a problem that even if the ring gear is damaged, it cannot be seen from the outside.
Further, in the conventional winding device, when an annular gear is formed on the inner peripheral surface of the drum housing portion, in order to prevent the drum from rotating in reverse, the claw that meshes with the annular gear, or to allow the drum to rotate backward In addition, it is necessary to store a mechanism for controlling the dial position in a narrow space inside the annular gear, and there are problems that the structure is complicated and it is difficult to ensure strength and durability.

Further, in the conventional winding device, if the annular gear is formed at a position above the drum storage portion, there is a problem that the vertical size of the winding device becomes large.
In the conventional winding device, when the annular gear is formed on the side of the drum storage portion, there is a problem that the horizontal size of the winding device becomes large.

Japanese Unexamined Patent Publication No. 2015-293 Japanese Unexamined Patent Publication No. 2015-297 Japanese National Table 2008-525052 International Patent Publication No. WO2006 / 050266 International Patent Publication WO2004 / 110197 Japan Special Table 2003-2003080 International Publication Patent WO01 / 15559 International Patent Publication WO2015 / 035885 Japanese National Table 2016-52841 International Patent Publication WO2015 / 039052 US 7954204 specification Japanese National Table 2016-525393 Japanese Unexamined Patent Publication No. 2010-148927 Japanese Unexamined Patent Publication No. 2016-36679 International Patent Publication WO2015 / 006616 International Patent Publication WO2015 / 003079 Japan Special Table 2016-520401 International Patent Publication WO2014 / 197721 International Patent Publication No. WO2014 / 074645 Japanese National Table 2013-525007 International Publication Patent WO2011-137405 International Patent Publication No. WO2014 / 047808 International Patent Publication WO2010 / 059989 Japanese Utility Model Registration No. 3159620 International Patent Publication No. WO99 / 09850 Japanese National Table 2001-513379 International Patent Publication WO2013 / 138759 Japanese National Table 2015-516828 International Patent Publication WO2012 / 003396 Japanese National Table 2013-530023 Japanese Patent Application No. 2016-75374 (Japanese Unexamined Patent Publication No. 2017-184964) Japanese Patent Application 2016-157594

The problem to be solved by the present invention is to solve the above-described problems associated with the winding device in which the annular gear is formed on the inner peripheral surface of the drum storage portion. An object of the present invention is to provide a winding device that can simplify the internal structure, increase strength, durability, and reliability, and reduce labor for maintenance.

(1) The present invention relates to a “drum for winding a string, a base member having a bottomed cylindrical drum storage portion for storing the drum, and an annular gear formed on an outer peripheral surface portion of the drum storage portion. And a dial that is disposed at a position having the same rotation center as that of the drum and is physically connected so that the drum can be rotationally driven; and a lower surface of the dial that is integrated with the annular gear. The main feature is a “winding device” that includes a claw to be mated and that can control the rotation of the dial by the annular gear and the claw.

(2) In the winding device according to the present invention, the claw is provided so as to protrude inward from an arc-shaped spring portion arranged on the same center circle as the cylindrical annular wall constituting the drum storage portion. It may be.
(3) In the winding device of the present invention, the annular gear is formed in a sawtooth shape, and engages with the claw to constitute a ratchet so that the dial can be rotated only in one direction. There may be.

(4) In the winding device of the present invention, the physical connection between the dial and the drum is obtained by engagement of dial teeth provided on the lower surface of the dial and drum teeth provided on the upper surface of the drum. The physical connection may be released by moving the dial away from the drum.
(5) In the winding device of the present invention, the dial may include an annular skirt portion formed so as to surround an outside of a movable range of the arc-shaped spring portion.

(1) In the winding device of the present invention configured as described above, the structure of the device disposed inside the annular gear can be simplified to increase the strength, durability, reliability, etc. of the device. Since the state of the annular gear can also be confirmed from the outside, it is possible to provide a winding device that can reduce the labor of maintenance.
Furthermore, it is possible to eliminate the complicated molding process and reduce the number of parts of the winding device.

(2) In the winding device of the present invention, the claw is provided so as to protrude inward from an arc-shaped spring portion arranged on the same center circle as the cylindrical annular wall constituting the drum storage portion. In this case, it is possible to easily obtain a structure in which the pawl is urged toward the annular gear and the teeth of the annular gear are smoothly and reliably overcome.
Further, the spring portion can be arranged by effectively utilizing the space in the dial without increasing the radial size of the dial.
(3) In the winding device of the present invention, the annular gear is formed in a sawtooth shape, and engages with the claw to form a ratchet so that the dial can be rotated only in one direction. In this case, the operation of tightening the string can be reliably performed.
Moreover, the reliability of the various articles | goods with which the winding apparatus was mounted | worn can be improved by preventing reverse rotation of a dial.

(4) In the winding device of the present invention, the physical connection between the dial and the drum is obtained by the engagement of the dial teeth provided on the lower surface of the dial and the drum teeth provided on the upper surface of the drum. If the physical connection is released by moving the dial away from the drum, the string can be easily and smoothly released from tightening. Furthermore, the structure can be simplified by arranging the dial and the drum vertically.
Therefore, the apparatus can be made compact, the number of parts can be reduced, and the reliability of the apparatus can be increased.
(5) In the winding device according to the present invention, when the dial includes an annular skirt formed so as to surround the movable range of the arc-shaped spring, the skirt The annular gear and the spring part can be protected, the appearance of the device can be improved, and the operability of the dial can be improved.

FIG. 1 is an exploded perspective view of a winding device according to an embodiment of the present invention. FIG. 2 is a side view showing a shoe equipped with a winding device according to an embodiment of the present invention. FIG. 3 shows a base member of a winding device according to an embodiment of the present invention, in which (A) is a plan view and (B) is a front view. 4A and 4B show a drum of a winding device according to an embodiment of the present invention, where FIG. 4A is a top perspective view, FIG. 4B is a bottom perspective view, and FIG. 4C is a plan view. ) Is a side view, (E) is a front view, (F) is a bottom view, and (G) is a perspective view showing a state where one end of a string is fixed. 5A and 5B show a dial of a winding device according to an embodiment of the present invention. FIG. 5A is a plan view, FIG. 5B is a side view, FIG. 5C is a bottom view, and FIG. A perspective view and (E) are perspective views of the lower surface side. FIG. 6 shows a state in which the dial of the winding device according to an embodiment of the present invention is lowered, (A) is a plan view, (B) is a side view, (C) is a front view, and (D) is a front view. It is a perspective view. FIG. 7 shows a state in which the dial of the winding device according to one embodiment of the present invention is pulled up, (A) is a plan view, (B) is a side view, (C) is a front view, and (D) is a front view. It is a perspective view. FIG. 8 is a view showing a state in which the dial of the winding device according to the embodiment of the present invention is lowered, and is a sectional view taken along line XX in FIG. FIG. 9 is a diagram showing a state in which the dial of the winding device according to one embodiment of the present invention is pulled up, and is a cross-sectional view taken along line YY in FIG.

The present invention provides a drum for winding a string, a base member having a cylindrical drum storage portion with a bottom for storing the drum, an annular gear formed on an outer peripheral surface portion of the drum storage portion, A dial that is disposed at a position having the same rotation center as that of the drum and is physically connected so that the drum can be rotationally driven, and a claw that is integrated with the lower surface of the dial and engages with the annular gear And a winding device that can control the rotation of the dial by the annular gear and the claw, and can be suitably embodied by the embodiments described below.

A winding device 1 according to an embodiment embodying the present invention is capable of winding a shoelace 2 that is a string for tightening the upper portion of a shoe S, as shown in FIGS. The base member 3, the drum 4 for winding the shoelace 2, the substantially disk-shaped dial 5 for rotationally driving the drum 4, and the dial 5 for attaching the dial 5 to the base member 3. The shaft member 6 is rotatably fixed to the base member 3, the spring member 7 whose one end is pivotally supported by the shaft member 6, and a screw 8.

The shoelace 2 is a wire shoelace in which a wire rope made by twisting a plurality of stainless steel wires having a diameter of 0.11 to 0.13 mm is processed with a swaging machine and coated with nylon resin. 2 can be suitably used.
In addition, as a string that can be used for the winding device of the present invention, a string having a smooth surface that is excellent in flexibility, strength, wear resistance, and that is difficult to be entangled or entangled is suitable. A string made of a metal wire coated with a resin as described above, or a resin string made of nylon resin or the like (including monofilament and multifilament) can be used.

The base member 3 is formed so that a thin plate-like flange 31 protrudes outward from the periphery of an annular wall 32 formed in a cylindrical shape so as to rotatably store the drum 4. The winding device 1 can be fixed to the shoe S by being integrally formed and the flange 31 is sewn and fixed to the shoe S.
The bottomed cylindrical drum storage portion 33 provided inside the annular wall 32 is provided with a rotating shaft 34 for projecting the drum 4 at the center of the bottom portion.
Further, two string outlets 35 are formed at the bottom of the drum storage portion 33 so as to penetrate the annular wall 32.

An annular gear 36 is formed on the outer periphery of the annular wall 32 by teeth 36 a made up of a plurality of protrusions protruding radially outward from the annular wall 32. Therefore, the annular gear 36 can be lowered to the same height position as the installation position of the drum 4, and the vertical size of the winding device 1 can be reduced.
Each tooth 36a constituting the annular gear 36 extends along the center line (axial direction) of the annular wall 32 and has a triangular horizontal cross section having an acute apex at the tip. Have.

The drum 4 has a string winding part 41 for winding and holding the shoelace 2 and a cylindrical rotating shaft part 42 disposed inside the string winding part 41. Then, on both upper and lower surfaces of the drum 4, there are recessed portions 43 formed in an annular shape between the string winding portion 41 and the rotating shaft portion 42.
The rotating shaft 34 of the base member 3 is inserted into the rotating shaft portion 42, and the drum 4 can be rotated in the drum storage portion 33.

The concave portion 43 formed on the lower side of the drum 4 faces the inner bottom portion of the drum storage portion 33, and includes two locking projections 44 in the concave portion 43.
And the front-end | tip part of the shoelace 2 introduce | transduced in the said recessed part 43 from the several string penetration hole 45 formed in the said string winding part 41 is pinched | interposed using the said latching protrusion 44, and the inside of the said recessed part 43 Can be retained.
On the other hand, a plurality of drum teeth 46 project from the concave portion 43 formed on the upper surface side of the drum 4 along the outer peripheral surface thereof.

The dial 5 is arranged at a position having the same rotation center as that of the drum 4 and is physically connected, so that the drum 4 can be rotationally driven. The dial 5 has a shaft hole 51 at the center thereof, and a plurality of dial teeth 52 are annularly arranged around the shaft hole 51 on the lower surface of the dial 5 so as to protrude.
The dial teeth 52 physically engage the drum 4 and the dial 5 by engaging with the drum teeth 46 so that the rotation of the dial 5 can be transmitted to the drum 4. At the same time, when both are connected, the drum 4 cannot be rotated unless the dial 5 is rotated.
Further, the dial 5 has an outer peripheral edge portion formed in a downward cylindrical shape, and further has a skirt portion 53 provided so that the outer surface is contracted obliquely toward the lower end portion side. A portion 53 covers the periphery of the annular gear 36.

The dial 5 has four spring portions 54 at an inner position of the skirt portion 53, and the spring portions 54 are arranged in an arc shape at equal intervals on the same center circle as the dial 5. The dial 5 is integrally formed.
Accordingly, these arc-shaped spring portions 54 are arranged on the same center circle as the cylindrical annular wall 32, and the space in the dial 5 is effectively used without increasing the radial size of the dial 5. Thus, the spring portion 54 can be disposed.
The spring portion 54 is formed in a plate shape or a rod shape, and a base end portion of the spring portion 54 is connected to the dial 5, and a claw 54 a facing the radially inner side is provided at the distal end portion. And the said nail | claw 54a can move to radial direction outer side so that it may get over the tooth | gear 36a of the said annular gear 36, when the said spring part 54 elastically deforms.

The annularly formed skirt portion 53 is formed so as to surround the outside of the movable range of the arc-shaped spring portion 54 (the range in which the spring portion 54 can operate without being damaged). While protecting, the nail | claw 54a and the spring part 54 can be protected now.
Furthermore, the appearance of the winding device 1 can be improved by the skirt portion 53, and the operability of the dial 5 can be improved.

The claw 54a can be controlled so that the dial 5 can rotate only in one direction by engaging with the teeth 36a of the annular gear 36.
That is, the annular gear 36, the claw 54a, and the spring portion 54 constitute a ratchet mechanism, and the horizontal cross section of the annular gear 36 so that the dial 5 can be rotated only in the direction in which the shoelace 2 is wound and tightened. Is formed in a “sawtooth shape”.

The dial 5 is movable along the rotational axis direction thereof, and the drum teeth 46 and the dial teeth 52 mesh with each other so that the rotation of the dial 5 can be transmitted to the drum 4; It is possible to realize a released state in which the drum 4 is physically separated from the dial 5 so that the drum teeth 46 and the dial teeth 52 are separated from each other and the drum 4 can freely rotate.

The shaft member 6 is fixed to the base member 3 by a screw 8 so as to be rotatable so that the dial 5 can be rotatably mounted on the base member 3. Can be held and guided in a movable state between a locked position where the drum is approached to the drum 4 and a release position which is separated from the drum 4.
Further, the shaft member 6 is formed in a columnar shape, and has a bearing portion 61 formed by cutting away the facing portion of the outer surface near the upper end of the shaft member 6 in a direction orthogonal to the axial direction. is doing.
By inserting a linear end portion (shaft portion 71) formed on the spring member 7 into the bearing portion 61, the spring member 7 is pivotally supported. That is, one spring member 7 is arranged at a position about 180 degrees apart from the shaft member 6.

The spring member 7 is curved and formed in a substantially U shape as a whole, and is disposed in a spring accommodating portion 55 formed adjacent to the shaft hole 51 of the dial 5, with the other end curved. The part 72 is always in contact with the inner surface of the spring housing part 55.
The drum 4 can be switched from the locked state to the released state by moving the dial 5 from the locked position to the released position.

Furthermore, the reversal position where the other end portion 72 of the spring member 7 is most strongly compressed toward the shaft member 6 side is set at a position between the lock position and the release position.
Accordingly, the dial 5 is clearly switched between the lock position and the release position, so that it is possible to easily know whether the drum 4 is in the lock state or the release state.

A disc-shaped cover member 9 is fitted on the upper side of the dial 5 to protect the inside of the winding device 1 and prevent dust and the like from entering.
A through hole 9a is formed at the center of the cover member 9, and the screw 8 on the inner side (lower side) of the cover member 9 is operated via the through hole 9a to move from the base member 3 to the drum 4, the dial. 5, the shaft member 6, the spring member 7, and the screw 8 can be removed.
Therefore, in the winding device 1 configured as described above, the structure of the device disposed in the drum storage portion 33 can be simplified, and the internal reliability and durability of the winding device 1 are improved. In addition, the number of parts can be reduced, and the vertical size of the winding device 1 can be reduced.

Next, a method for assembling and manufacturing the components of the winding device 1 described above will be described.
First, the ends of the shoelaces 2 are inserted into the two string outlets 35 formed on the base member 3 of the winding device 1, and both ends of the shoelaces 2 are pulled out from the inside of the drum storage portion 33.
Then, after the ends of the shoelace 2 are sequentially inserted three times through the string insertion holes 45 provided in six places in the drum 4 so as to sew each end of the shoelace 2, the drum 4 is fixed to the drum 4. Arranged in the drum storage unit 33.

Next, after attaching one end portion (shaft portion 71) of the spring member 7 to the bearing portion 61 of the shaft member 6, the shaft member 6 and the spring member 7 are attached to the dial 5 by fitting them from above the dial 5. Assemble.
Here, since the flange portion 62 formed to protrude outward in the radial direction at the upper end portion of the shaft member 6 contacts the periphery of the shaft hole 51 of the dial 5, the dial 5 does not come off the shaft member 6.
After assembling the dial 5, the shaft member 6 and the spring member 7 according to the above procedure, the screw 8 is inserted through the screw insertion hole 63 formed through the shaft center of the shaft member 6, and the shaft member 6 and the like are inserted into the base member 3. Attach to.

Finally, the winding device 1 can be assembled by fitting the cover member 9 into the dial 5.
When disassembling the winding device 1 for maintenance or repair, the screw 5 is inserted through the through hole 9a of the cover member 9 and the screw 8 is removed, so that the assembled dial 5, shaft member 6 and spring member are removed. 7 can be removed from the base member 3.

In addition, as materials constituting each member in the winding device 1 of the present embodiment, the following materials are used as an example in consideration of strength, durability, elasticity, and the like, but the materials are limited to these materials. is not.
Base member 3 ... nylon drum 4, shaft member 6 ... POM (polyacetal)
Dial 5 ... Nylon and TPE (thermoplastic elastomer) around it
Spring member 7 ... Stainless steel Screw 8 ... Carbon steel Cover member 9 ... ABS resin

A method of using the winding device 1 configured as described above will be described.
In order to tighten the shoelace 2 after wearing the shoe S, as shown in FIGS. 6 and 8, the dial 5 of the winding device 1 is placed in the locked position in which the base member 3 and the drum 4 are brought close to each other. Is rotated to wind the shoelace 2 around the drum 4.
In this case, the claw 54a of the dial 5 can get over the teeth 36a of the annular gear 36 only in the direction in which the shoelace 2 is tightened, and the claw 54a cannot get over the annular gear 36 in the direction in which the shoelace 2 is loosened. The drum 4 does not rotate in the direction in which the shoelace 2 is loosened.

In addition, since the reverse position where the spring member 7 is most strongly compressed is set between the lock position and the release position, the spring member 7 moves the dial 5 downward when the dial 5 is in the lock position. The dial 5 is energized and holds the dial 5 in the locked position.

Next, in order to loosen the tightening of the shoelace 2, the dial 5 of the winding device 1 is pulled upward.
At this time, the spring member 7 is compressed, and by pulling the dial 5 further upward against the repulsive force, the spring member 7 exceeds the reversal position where the spring member 7 is most strongly compressed, and the lock position and the release position are By switching the direction in which the spring member 7 is compressed between them, the dial 5 is moved to the release position away from the base member 3 and the drum 4 (state shown in FIGS. 7 and 9).

The other end portion 72 of the spring member 7 is always in contact with the inner surface of the spring accommodating portion 55 provided adjacent to the shaft hole 51 of the dial 5, and wear of parts can be prevented.
When the dial 5 is moved from the lock position to the release position as described above, the engagement between the drum teeth 46 of the drum 4 and the dial teeth 52 of the dial 5 is smoothly released, and the drum 4 can freely rotate. The shoelace 2 is loosened.

On the other hand, when the dial 5 is pressed downward so as to move from the release position to the lock position, the spring member 7 is reversely moved over the reverse position where it is most strongly compressed, and the drum teeth 46 and the dial 5 of the drum 4 are reversed. Therefore, the shoelace 2 can be wound around the drum 4 and the shoelace 2 can be tightened.

In the present specification, the “dial” is not particularly limited in its outer shape as long as it functions as an operation unit for rotationally driving the drum 4, and has a polygonal shape. Also good.

The winding device of the present invention is configured so that the spring member 7 does not exceed the reverse position, and the dial 5 is always urged to the locked position (locked state) by the spring member 7. You can also.
In this case, the release state in which the dial teeth 52 are separated from the drum teeth 46 of the drum 4 and the drum 4 can freely rotate is limited to when the dial 5 is lifted up. It will be immediately returned to the locked position.
Furthermore, in this embodiment, the vertical size of the winding device can be further reduced.

The winding device according to the present invention is not limited to the winding device 1 arranged on the back of the shoe S as shown in FIG. 2, but a winding for fastening the shoelace 2 for fastening different portions of the shoe S. It may be implemented in an apparatus.

As another embodiment, the winding device of the present invention may be embodied using a dial not provided with the spring portion 54.
In this embodiment, unlike the previous embodiment, in order to allow the claw 54a to get over the teeth 36a of the annular gear 36 and the dial 5 to rotate only in one direction, one or more of the following configurations are provided. May be adopted as appropriate.

1. By changing the shape, size, or material of the annular gear 36, the elasticity of the annular gear 36 is increased.
2. By changing the shape, size or material of the claw 54a, the elasticity of the claw 54a itself is increased.
3. While reducing the tooth | gear 36a and the nail | claw 54a of the annular gear 36, the number of the nail | claw 54a is increased and the force added to each nail | claw 54a is weakened.
4). The angle at which the annular gear 36 and the claw 54a are engaged is changed.

As another embodiment, the winding device of the present invention does not employ an integrally formed dial 5, spring portion 54, and claw 54 a, but a separate annular member provided with the spring portion 54 and claw 54 a. May be embodied as a winding device having a dial with claws.
In the winding device of the above embodiment, when a problem occurs in the spring part, the problem can be easily solved by replacing the annular member provided with the spring part and the claw.

Furthermore, the present invention is embodied as a winding device for winding and tightening a strap other than a shoelace, such as a bag, clothes, a life jacket, a hat, a protective gear worn on the body, The material, shape, dimensions, angle, arrangement, number, and the like of each part of the winding device may be changed as appropriate without departing from the spirit of the invention.
For example, the shape and number of the annular gear 36, the teeth 36a, the drum teeth 46, the dial teeth 52, the spring portions 54, or the claws 54a may be changed.

The present invention is small and light, and can be suitably used industrially as a winding device that is excellent in durability, operability, and maintenance.

DESCRIPTION OF SYMBOLS 1 Winding device 2 Shoelace 3 Base member 31 Flange 32 Annular wall 33 Drum storage part 34 Rotating shaft 35 Cord outlet 36 Annular gear 36a Tooth 4 Drum 41 String winding part 42 Rotating shaft part 43 Concave part 44 Locking protrusion 45 String insertion Hole 46 Drum tooth 5 Dial 51 Shaft hole 52 Dial tooth 53 Skirt part 54 Spring part 54a Claw 55 Spring storage part 6 Shaft member 61 Bearing part 62 Flange part 63 Screw insertion hole 7 Spring member 71 Shaft part (one end part)
72 Other end 8 Screw 9 Cover member 9a Through hole S Shoes

Claims

A drum for winding the string,
A base member provided with a bottomed cylindrical drum storage section for storing the drum;
An annular gear formed on the outer peripheral surface of the drum storage unit;
A dial capable of rotationally driving the drum by being physically connected and disposed at a position having the same rotation center as the drum;
A claw integrated with the lower surface of the dial and engaged with the annular gear;
With
The winding device, wherein the rotation of the dial can be controlled by the annular gear and the claw.
The said nail | claw is provided so that it may protrude toward the inner side from the arc-shaped spring part arrange | positioned on the same center circle as the cylindrical annular wall which comprises the said drum accommodating part. Winding device.
The winding device according to claim 2, wherein the annular gear is formed in a sawtooth shape, and is engaged with the claw to constitute a ratchet so that the dial can be rotated only in one direction.
The physical connection between the dial and the drum is obtained by engagement of dial teeth provided on the lower surface of the dial and drum teeth provided on the upper surface of the drum, and the dial is connected to the drum. The winding device according to claim 1, wherein the physical connection is released by moving the drum in a direction away from the drum.
3. The winding device according to claim 2, wherein the dial includes an annular skirt portion formed so as to surround an outside of a movable range of the arc-shaped spring portion.