Patent Description:
Typically, the technique of decreasing a fleet angle for winding a winding target member in parallel around a drum, i.e., winding the winding target member in line around the drum has been employed. The fleet angle indicates an angle between a line connecting the drum and the center of an inlet for guiding the winding target member to the drum and a line connecting the inside of an end of the drum and the center of the inlet. With a great fleet angle, the winding target member is not wound in parallel, but is wound in a bump shape in the vicinity of the center due to a great force of returning the winding target member to the center even when an attempt is made to wind the winding target member around the end of the drum. On the other hand, in the case of a small fleet angle with the same drum width, a distance between the drum and the inlet is long, and for this reason, the entire size of the winding device is large. This problem is particularly noticeable in a winding device with dust and water resistance enhanced by a configuration in which an inlet is provided at a case and a drum is housed in the case.

For this reason, in <CIT> a winding device has been proposed, which includes a half-ring-shaped swing member arranged along a circumferential direction of a drum and configured to swing about an axis perpendicular to the axis of the drum. In this winding device, a winding target member is guided from an inlet to a center portion of the half-ring-shaped swing member, and is wound around the drum. A biasing unit is provided at the swing member to bias the swing member to the center. When the drum rotates and the winding target member moves to one flange side accordingly, the swing member tends to tilt to the flange side due to the tension of the winding target member. However, such tilting is reduced by the biasing unit, and therefore, the swing member can smoothly follow the motion of the winding target member moving along the entire surface of the drum. With this configuration, the winding target member can be wound in parallel around the drum.

According to the winding device configured as described above, the inlet and the drum can be positioned close to each other. However, the spring modulus of the biasing unit needs to be changed according to the tension of the winding target member. The tension of the winding target member normally fluctuates, and there is room for improvement for practical use.

A winding device according to the preamble of claim <NUM> is known from <CIT> and <CIT>.

The present invention is intended to provide a winding device configured to wind a winding target member in parallel regardless of the tension of the winding target member while an inlet can be positioned close to a drum by a simple structure.

For solving the above-described problems, a winding device according to claim <NUM> is provided. This winding device is a winding device <NUM> provided with an inlet <NUM> for drawing a string-shaped winding target member <NUM> and configured to wind the winding target member <NUM>, as shown in <FIG> and <FIG>. The winding device <NUM> includes a drum <NUM> having flanges <NUM>, <NUM> at both end portions of a body <NUM> in an axial direction of the body <NUM> and provided rotatably about an axis <NUM> of the body <NUM>, a drive source <NUM> configured to rotate the drum <NUM>, a first guide portion <NUM> configured to draw the winding target member <NUM> along a first axis <NUM> arranged substantially perpendicularly to the axis <NUM> of the body in a skew relationship, a swing member <NUM> provided swingably about the first axis <NUM>, and a second guide portion <NUM> attached to a tip end of the swing member <NUM> to guide the winding target member <NUM> from the first guide portion <NUM> to the drum <NUM>. The second guide portion <NUM> is attached to the swing member <NUM> such that a winding-portion winding target member <NUM> to be wound around the drum <NUM> from the second guide portion <NUM> is substantially parallel with the first axis <NUM>. The winding target member <NUM> is wound around the drum <NUM> through the first guide portion <NUM> and the second guide portion <NUM>.

With this configuration, the winding target member guided from the inlet along the first axis arranged substantially perpendicularly to the axis of the body in the skew relationship is wounded using the first guide portion and the second guide portion attached to the swing member such that the winding-portion winding target member to be wound around the drum from the second guide portion is substantially parallel with the first axis. Thus, even with great tension, the direction of the tension and a swing direction of the swing member are perpendicular to each other, and therefore, the swing member is easily swingable. That is, the winding-portion winding target member to be wound around the drum is easily movable in a width direction of the drum. While pushed by the winding target member previously wound around the drum, the winding target member is wound in parallel around the drum. Thus, the winding device configured to wind the winding target member in parallel is provided so that the inlet can be arranged at the position close to the drum and the entirety of the device can be compactified by a simple structure.

A winding device according to the present invention is configured such that the second guide portion <NUM> includes a second pulley <NUM> supported on the swing member <NUM> as shown in <FIG>. With this configuration, since the second guide portion includes the pulley and is moved in the width direction of the drum by swing of the swing member, the winding target member can be guided by a simple structure with less resistance because of use of the pulley.

A winding device according to the present invention is configured such that the first guide portion <NUM> includes a first pulley <NUM> supported on the swing member <NUM> as shown in <FIG>. With this configuration, since the first pulley of the first guide portion and the second pulley of the second guide portion are supported on the swing member swinging about the first axis, the winding target member can be guided to the drum by a simple structure with less resistance.

A winding device according to further aspect of the present invention is, for example, configured such that the swing member <NUM> has a balance weight <NUM> on the opposite side of the first axis <NUM> from the second guide portion <NUM> as shown in <FIG>. With this configuration, since the swing member has the balance weight on the side opposite to the second guide portion, the center of gravity of the swing member is moved closer to the first axis so that moment due to, e.g., the weight of the swing member itself at the position of the first axis can be reduced. Thus, the swing member is easily swingable about the first axis.

A winding device according to the present invention is configured such that the first guide portion <NUM> has the first pulley <NUM> on the opposite side of the first axis <NUM> from the second guide portion <NUM>, the winding target member <NUM> is wound the half or more of the circumference of the first pulley <NUM>, and the rotation axis <NUM> of the first pulley <NUM> is inclined with respect to the axis <NUM> of the body, as shown in <FIG>. With this configuration, since the first pulley is positioned on the opposite side of the first axis from the second guide portion, the center of gravity of the swing member is moved closer to the first axis so that the moment due to, e.g., the weight of the swing member itself at the position of the first axis can be reduced. Thus, the swing member is easily swingable about the first axis. Moreover, since the rotation axis of the first pulley is inclined with respect to the axis of the body, intersection of the winding target member can be avoided.

A winding device according to a non-claimed embodiment is, for example, configured such that the first guide portion <NUM> includes, on the opposite side of the first axis <NUM> from the second guide portion <NUM>, the first pulley <NUM> and a third pulley <NUM> supported on the swing member <NUM> and the winding target member <NUM> is sent to the second pulley <NUM> by way of the first pulley <NUM> and the third pulley <NUM>, as shown in <FIG>. With this configuration, since the first pulley and the third pulley are positioned on the opposite side of the first axis from the second guide portion, the center of gravity of the swing member is moved closer to the first axis so that the moment due to, e.g., the weight of the swing member itself at the position of the first axis can be reduced. Thus, the swing member is easily swingable about the first axis.

According to the winding device of the present invention, the winding target member guided along the first axis arranged substantially perpendicularly to the axis of the body in the skew relationship is wounded using the first guide portion and the second guide portion attached to the swing member such that the winding-portion winding target member to be wound around the drum from the second guide portion is substantially parallel with the first axis. Thus, the winding target member is wound in parallel around the drum. Consequently, the winding device configured to wind the winding target member in parallel is provided so that the inlet can be arranged at the position close to the drum and the entirety of the device can be compactified by a simple structure. Specifically, in a winding device with dust and water resistance enhanced by a configuration in which an inlet is provided at a case and, e.g., a drum is housed in the case, the case can be compactified, and therefore, more prominent advantageous effects can be provided.

Note that the same reference numerals are used to represent the same or equivalent devices in each figure and overlapping description thereof will be omitted.

First, a winding device <NUM> will be described with reference to <FIG> and <FIG>. The winding device <NUM> has a drum <NUM> around which a string-shaped winding target member <NUM> is to be wound, a drive source <NUM> configured to rotate the drum <NUM>, a first guide portion <NUM> for drawing the winding target member <NUM>, and a second guide portion <NUM> for guiding the winding target member <NUM> to the drum <NUM>. Further, the winding device <NUM> has a case <NUM> housing therein these devices and provided with an inlet <NUM> through which the winding target member <NUM> is to be drawn. The string-shaped winding target member <NUM> may be, but not limited to, a power line or a communication cable, for example.

The drum <NUM> has flanges <NUM>, <NUM> at both end portions of a body <NUM> in an axial direction thereof, and is held so as to be able to rotate about the axis <NUM> of the body <NUM>. In the present embodiment, the body <NUM> has a cylindrical shape, but the shape thereof is not specifically limited as long as the winding target member <NUM> can be wound around the body <NUM>. The drum <NUM> rotates about the axis <NUM>, and accordingly, the winding target member <NUM> is wound around the body <NUM>. The flanges <NUM>, <NUM> are members extending in a radial direction of the body <NUM> to avoid detachment of the winding target member <NUM> from the body <NUM>, and for example, are formed in a discoid shape. However, the flanges <NUM>, <NUM> may be formed of, for example, multiple rod members.

The drum <NUM> is rotated about the axis <NUM> by the drive source <NUM>. The drive source <NUM> may be a well-known device including, for example, a motor and a reducer; a motor, a chain, and a sprocket; and a motor, a belt, and a pulley. The motor is not limited to an electric type, and may be of an oil or water pressure drive type and may obtain rotary force by an engine. The method for coupling the drum <NUM> and the drive source <NUM> to each other is not specifically limited.

The first guide portion <NUM> draws the winding target member <NUM> along a first axis <NUM> arranged substantially perpendicularly to the axis <NUM> of the body in a skew relationship. The skew relationship described herein indicates that the first axis <NUM> does not intersect the axis <NUM> of the body. That is, the winding target member <NUM> is not directly wound around the drum <NUM>, but is wound around the drum <NUM> after having been bent at the later-described second guide portion <NUM> such that the direction thereof is changed from that of the first guide portion <NUM>. The first axis <NUM> arranged substantially perpendicularly to the axis <NUM> of the body indicates that the winding target member <NUM> is drawn from a substantially radial direction of the body <NUM>, and is not necessarily in precise perpendicular arrangement. In the present embodiment, the first guide portion <NUM> includes: a hole <NUM> formed at a later-described swing member <NUM> for drawing the winding target member <NUM>; and a first pulley <NUM>. The winding target member <NUM> is guided from the outside to the first guide portion <NUM> through the inlet <NUM> formed at the case <NUM>. For guiding the winding target member <NUM> through the inlet <NUM> along the first axis <NUM>, a guide tube <NUM> (see <FIG>) may be provided. Note that the winding target member <NUM> is tensioned upon winding because the winding target member <NUM> is supported on, e.g., another instrument (not shown) on the upper side as viewed in <FIG> or due to the weight of the winding target member <NUM> itself, for example.

The second guide portion <NUM> guides the winding target member <NUM> from the first guide portion <NUM> to the drum <NUM>. The second guide portion <NUM> is positioned in a direction substantially perpendicular to the axis <NUM> of the body and the first axis <NUM> with respect to the first guide portion <NUM>. Moreover, the winding target member <NUM> extending from the second guide portion <NUM> toward the body <NUM> is arranged at a position substantially perpendicular to the axis <NUM> of the body. That is, the winding target member <NUM> drawn along the first axis <NUM> arranged substantially perpendicularly to the axis <NUM> of the body in the skew relationship and a winding-portion winding target member <NUM> as the winding target member <NUM> to be wound around the drum from the second guide portion <NUM> are substantially parallel with each other. In the present embodiment, the second guide portion <NUM> includes a second pulley <NUM>.

The first pulley <NUM> of the first guide portion <NUM> and the second pulley <NUM> of the second guide portion <NUM> are rotatably supported on the swing member <NUM>. The swing member <NUM> is supported so as to be able to swing about the first axis <NUM>. The configuration for supporting the swing member <NUM> is not specifically limited, and for example, the swing member <NUM> may be supported by a support pin (not shown) substantially coaxial with the first axis <NUM> or be hung from the guide tube <NUM> (see <FIG>) substantially coaxial with the first axis <NUM> as long as the swing member <NUM> can be swingably supported. The second pulley <NUM> is arranged at a tip end of the swing member <NUM>. The "tip end" as described herein indicates a distal end of the swing member <NUM> with respect to the first axis <NUM>, and is not necessarily precisely an end portion. The swing member <NUM> swings about the first axis <NUM>, and accordingly, the second pulley <NUM> reciprocates on an arc about the first axis <NUM> by the width of the drum <NUM>, i.e., between two flanges <NUM>, <NUM>, and the winding target member <NUM> is wound in parallel around the body <NUM> of the drum <NUM>. Note that in a precise sense, the second pulley <NUM> does not necessarily precisely reciprocate about the first axis <NUM>, but may only be supported substantially at such a position that the second pulley <NUM> is reciprocatable in a width direction of the drum <NUM>. Moreover, the swing member <NUM> is arranged such that the winding target member <NUM> between the first pulley <NUM> and the second pulley <NUM> is at a substantially right angle to the winding target member <NUM> drawn along the first axis <NUM> and the winding-portion winding target member <NUM>.

As shown in <FIG>, the hole <NUM> for drawing the winding target member <NUM> may be formed at the swing member <NUM>. However, the swing member <NUM> may only be configured to rotatably support the first pulley <NUM> of the first guide portion <NUM> and the second pulley <NUM> of the second guide portion <NUM>, and for example, may be formed of beams. In this case, the hole <NUM> is not formed, and the winding target member <NUM> may be drawn through between the beams.

As shown in <FIG>, the swing member <NUM> may have a balance weight <NUM> on the opposite side of the first axis <NUM> from the second guide portion <NUM>. The balance weight <NUM> is a weight for cancelling or reducing moment about the vicinity of the first axis <NUM>, i.e., a support point, due to, e.g., the weight of the swing member <NUM> itself because of a longer second-guide-portion-<NUM> side length of the swing member <NUM>. When the center of gravity of the swing member <NUM> is shifted from the first axis <NUM> as the center of swing, the swing member <NUM> tilts and becomes less swingable. The center of gravity of the entirety of the swing member <NUM> is shifted closer to the first axis <NUM> by the balance weight <NUM>, and accordingly, tilting of the posture of the swing member <NUM> due to, e.g., the weight of the swing member <NUM> can be avoided in any posture of the winding device <NUM>. Thus, the swing member <NUM> smoothly follows movement of the second guide portion <NUM> upon winding of the winding target member <NUM> around the drum <NUM>.

In the winding device <NUM>, the winding target member <NUM> is guided to the first guide portion <NUM> along the first axis <NUM>. The winding target member <NUM> is guided to the second guide portion <NUM> after the direction of the winding target member <NUM> has been changed at the first guide portion <NUM>, and then, the winding target member <NUM> is wound around the drum <NUM> after the direction of the winding target member <NUM> has been changed at the second guide portion <NUM>. Thus, the inlet <NUM> can be positioned close to the drum <NUM>. In the winding device <NUM>, when the drum <NUM> is rotated by drive force of the drive source <NUM>, the winding target member <NUM> is pulled through the second pulley <NUM>. The winding-portion winding target member <NUM> to be wound around the body <NUM> of the drum <NUM> first comes into contact with the winding target member <NUM> previously wound around the body <NUM>, and then, slides on the winding target member <NUM>. Accordingly, the winding-portion winding target member <NUM> is wound in parallel with and next to the winding target member <NUM>. At this point, the swing member <NUM> swings about the first axis <NUM>, and accordingly, the second guide portion <NUM> moves in the width direction of the drum <NUM>. Since the second guide portion <NUM> moves in the width direction of the drum <NUM>, the winding-portion winding target member <NUM> is easily wound in parallel. At this point, the winding-portion winding target member <NUM> is substantially parallel with the first axis <NUM>, and the winding target member <NUM> is sent at a substantially right angle to the second pulley <NUM> from the first pulley <NUM> by the swing member <NUM>. Thus, even if great tension is caused on the winding target member <NUM>, the direction of the winding target member <NUM> is perpendicular to a swing direction of the swing member <NUM>, and therefore, the swing member <NUM> is easily swingable. The "substantially parallel" and "substantially perpendicular/perpendicularly" as described herein do not precisely indicate "parallel" and "perpendicular/perpendicularly," but are merely used to indicate such a direction of arrangement of the winding target member <NUM> that the swing member <NUM> can swing even if tension is caused on the winding target member <NUM>. Actually, when the winding target member <NUM> is wound by the winding device <NUM>, not only the direction (substantially parallel with the first axis <NUM>) of drawing of the winding target member <NUM> but also the winding target member <NUM> in the winding device <NUM> constantly change. For example, the direction of the winding-portion winding target member <NUM> also changes due to the number of turns of the winding target member <NUM> wound around the body <NUM>. Because of this situation, the terms "substantially parallel" and "substantially perpendicular/perpendicularly" are used.

Subsequently, a winding device <NUM> as an embodiment of the present invention will be described with reference to <FIG>. The winding device <NUM> is different from the winding device <NUM> in that the path of a winding target member <NUM> extends the half or more of the circumference of a first pulley <NUM> of a first guide portion <NUM> and the first pulley <NUM> is inclined for avoiding intersection between the winding target member <NUM> sent to the first pulley <NUM> along a first axis <NUM> and the winding target member <NUM> sent to a second guide portion <NUM> from the first pulley <NUM>. However, since other configurations are the same as those of the winding device <NUM>, overlapping description thereof will be omitted. Note that a swing member <NUM> is not shown in <FIG>.

In the winding device <NUM>, the first pulley <NUM> of the first guide portion <NUM> is arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM>. The case where the first pulley <NUM> is arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM> as described herein indicates that the rotation axis <NUM> of the first pulley <NUM> is arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM>. Thus, moment generated about the vicinity of the first axis <NUM> as a support point due to, e.g., a weight on a second guide portion <NUM> side and moment generated due to a weight on a first guide portion <NUM> side are cancelled out each other or reduced. Accordingly, advantageous effects similar to those of the balance weight <NUM> as described with reference to <FIG> are provided, and the swing member <NUM> is easily swingable about the support point.

In the winding device <NUM>, the axis <NUM> of the body <NUM> of the drum <NUM>, the rotation axis <NUM> of the first pulley <NUM>, and the rotation axis <NUM> of the second pulley <NUM> are substantially parallel with each other. On the other hand, in the winding device <NUM>, the rotation axis <NUM> of the first pulley <NUM> is inclined such that the intersection between the winding target member <NUM> sent to the first pulley <NUM> along the first axis <NUM> and the winding target member <NUM> sent to the second guide portion <NUM> from the first pulley <NUM> is avoided. That is, the rotation axis <NUM> of the first pulley <NUM> is inclined with respect to the axis <NUM> of the body <NUM>. An inclination direction may be the up-down direction, the horizontal direction (the direction of the second guide portion <NUM>), or an oblique direction therebetween. An inclination angle T is preferably small because resistance upon winding of the winding target member <NUM> is small.

Next, a winding device <NUM> as a non-claimed embodiment will be described with reference to <FIG>. The winding device <NUM> is different from the winding devices <NUM>, <NUM> in that a first guide portion <NUM> has a first pulley <NUM> and a third pulley <NUM>, the first pulley <NUM> and the third pulley <NUM> are arranged on the opposite side of a first axis <NUM> from a second guide portion <NUM>, and a winding target member <NUM> is sent to a second pulley <NUM> by way of the first pulley <NUM> and the third pulley <NUM>. However, other configurations are the same as those of the winding devices <NUM>, <NUM>, and therefore, overlapping description thereof will be omitted. The case where the first pulley <NUM> and the third pulley <NUM> are arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM> as described herein indicates that the rotation axis <NUM> of the first pulley <NUM> and the rotation axis <NUM> of the third pulley <NUM> are arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM>. Note that a swing member <NUM> is not shown in <FIG>.

In the winding device <NUM>, the first pulley <NUM> and the third pulley <NUM> of the first guide portion <NUM> are arranged on the opposite side of the first axis <NUM> from the second guide portion <NUM>. Thus, moment generated about the vicinity of the first axis <NUM> as a support point due to, e.g., a weight on a second guide portion <NUM> side and moment generated due to a weight on a first guide portion <NUM> side are cancelled out each other or reduced. Accordingly, advantageous effects similar to those of the balance weight <NUM> as described with reference to <FIG> are provided, and the swing member <NUM> is easily swingable about the support point. Note that as clearly shown in <FIG>, in the winding device <NUM>, the winding target member <NUM> sent to the first pulley <NUM> along the first axis <NUM> and the winding target member <NUM> sent to the second guide portion <NUM> from the third pulley <NUM> do not intersect each other and the rotation axis <NUM> of the first pulley <NUM> and the rotation axis <NUM> of the third pulley <NUM> are substantially parallel with the axis <NUM> of a body <NUM> and the rotation axis <NUM> of the second pulley <NUM>.

In the winding devices <NUM>, <NUM>, <NUM> as described above, the inlet <NUM> can be positioned close to the drum <NUM> and the winding target member <NUM> can be wound in parallel without influence of, e.g., the tension of the winding target member <NUM> by a simple structure. Thus, the entirety of each of the winding devices <NUM>, <NUM>, <NUM> can be compactified. Further, the winding target member <NUM> is guided through the inlet <NUM> with each of the winding devices <NUM>, <NUM>, <NUM> being housed in the compact case <NUM>, and therefore, dust and water resistance can be provided.

In description above, each of the winding devices <NUM>, <NUM>, <NUM> has been described as one housed in the case <NUM> having the inlet <NUM> for drawing the winding target member <NUM>, but depending on intended use, the case <NUM> does not necessarily provided. That is, it may be configured such that a main portion (in the case of the winding devices <NUM>, <NUM>, the drum <NUM>, the drive source <NUM>, the first guide portion <NUM>, the second guide portion <NUM>, and the like) of each of the winding devices <NUM>, <NUM>, <NUM> is supported by a support device and, e.g., a tube as the inlet <NUM> is supported in the vicinity of the main portion by a support device.

In description above, the first guide portion <NUM> and the second guide portion <NUM> have been described as those including the pulleys <NUM>, <NUM>, <NUM>, but instead of the pulleys, may have a well-known structure for sending the winding target member <NUM> after the direction thereof has been changed, such as a groove with a smooth surface.

Note that as shown in <FIG>, a winding device <NUM> may be configured such that a second guide portion <NUM> includes no pulley, a swing member <NUM> is not provided, and a second guide portion <NUM> is an arc-shaped guide <NUM>. Note that other configurations are the same as those of the winding device <NUM>, and therefore, overlapping description thereof will be omitted.

The arc-shaped guide <NUM> is a rod-shaped member configured to guide a winding target member <NUM> such that the winding target member <NUM> is wound around a drum <NUM> after the direction of the winding target member <NUM> has been changed on an arc with an equal distance from a first guide portion <NUM>. By the guide <NUM> instead of the pulley <NUM> of the second guide portion <NUM> of the swing member <NUM>, the position of the winding target member <NUM> to be wound around the drum <NUM> is easily moved in a width direction of the drum <NUM>. A surface of the guide <NUM> is smoothed such that the winding target member <NUM> smoothly slides thereon, and the material of the guide <NUM> is selected from those allowing the winding target member <NUM> to easily slide thereon. A pulley configured to smoothly slide along the guide <NUM> may be utilized such that the winding target member <NUM> smoothly slides. Note that a direction change at the position with the equal distance from the first guide portion <NUM> is for positioning a winding-portion winding target member <NUM>, which is to be wound around the drum <NUM> from the second guide portion <NUM>, substantially in parallel with the winding target member <NUM> drawn along a first axis <NUM>. For example, in a case where the guide is in the form of a straight line parallel with a body <NUM> of the drum <NUM>, the winding target member <NUM> changes the direction thereof to a direction oblique to the guide as a winding position moves closer to either end. For this reason, the force of returning the winding target member <NUM> to a right-angle position with the shortest distance is generated. Thus, the winding target member <NUM> is wound in the vicinity of the center such that the turns of the winding target member <NUM> overlap with each other in the vicinity of the center, and is not wound at both ends. As a result, the winding target member <NUM> cannot be wound in parallel. On the other hand, if the winding-portion winding target member <NUM> is, as in the case of the guide <NUM>, substantially parallel with the winding target member <NUM> drawn along the first axis <NUM>, i.e., is at a right angle to the body <NUM> of the drum <NUM>, no force of shortening a path is generated.

Claim 1:
A winding device (<NUM>) provided with an inlet for drawing a winding target member (<NUM>) and configured to wind the winding target member,
the winding device comprising:
a drum (<NUM>) having flanges (<NUM>, <NUM>) at both end portions of a body (<NUM>) in an axial direction of the body and provided rotatably about an axis (<NUM>) of the body;
a drive source (<NUM>) configured to rotate the drum;
a first guide portion (<NUM>) configured to draw the winding target member along a first axis (<NUM>) arranged substantially perpendicularly to the axis of the body in a skew relationship;
a swing member (<NUM>) provided swingably about the first axis; and
a second guide portion (<NUM>) attached to a tip end of the swing member to guide the winding target member from the first guide portion to the drum,
wherein the second guide portion is attached to the swing member such that a winding-portion winding target member (<NUM>) to be wound around the drum from the second guide portion is substantially parallel with the first axis, and
the winding target member is wound around the drum through the first guide portion and the second guide portion;
wherein the second guide portion includes a second pulley (<NUM>) supported on the swing member;
wherein the first guide portion includes a first pulley (<NUM>) supported on the swing member; the winding device being characterized in that
the first guide portion has the first pulley on the opposite side of the first axis from the second guide portion,
the winding target member is wound a half or more of a circumference of the first pulley, and
a rotation axis (<NUM>) of the first pulley is inclined with respect to the axis of the body.