Containment unit and winding body

Abstract

Improving the efficiency of wire storage. The storage unit disclosed herein includes: a winding body formed by winding wire; and a storage body for storing the winding body. The winding body has: a first spiral portion, which winds the wire multiple times in a first direction, either clockwise or counterclockwise, such that the distance from the center decreases with each turn; a first reversing portion, disposed inside the first spiral portion, which reverses the winding direction of the wire from the first direction to a second direction opposite to the first direction; and a second spiral portion, disposed outside the first reversing portion, which winds the wire multiple times in the second direction, such that the distance from the center increases with each turn.

Description

Technical Field

[0001] This invention relates to a housing unit and a winding body.

[0002] This application asserts priority based on Japanese Patent Application No. 2021-108562 filed in Japan on June 30, 2021, the contents of which are incorporated herein by reference. Background Technology

[0003] When pulling the optical cable from a spool, if the cable is pulled out in a straight line without rotating the spool, the cable will twist. Therefore, the optical cable is wound into a figure-eight shape. Additionally, Patent Document 1 describes a winding method for optical cables that can prevent collapse.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2013-184795

[0005] If only the wires (such as optical cables) wound into a figure-eight shape are stacked, the intersections of the wires overlap in the stacking direction, resulting in reduced storage efficiency. Furthermore, when the wires are stored using the winding method described in Patent Document 1, the intersections of the wires also overlap in the stacking direction, leading to reduced storage efficiency. Summary of the Invention

[0006] The purpose of this invention is to improve the wire packing efficiency.

[0007] The present invention for solving the above-mentioned problems is a receiving unit, characterized in that it comprises: a wound body formed by winding wire; and a receiving body for receiving the wound body, the wound body having: a first spiral portion formed by winding the wire multiple times in a first direction, which is either clockwise or counterclockwise, such that the distance from the center decreases with each turn; a first reversing portion disposed inside the first spiral portion, which reverses the winding direction of the wire from the first direction to a second direction opposite to the first direction; and a second spiral portion disposed outside the first reversing portion, formed by winding the wire multiple times in the second direction, such that the distance from the center increases with each turn.

[0008] Other features of the invention will become clear from the description and drawings that follow.

[0009] According to the present invention, the wire storage efficiency can be improved. Attached Figure Description

[0010] Figure 1 This is an explanatory diagram of the housing unit 1 in this embodiment.

[0011] Figure 2A This is an explanatory diagram of the winding body 20 in this embodiment. Figure 2B This is a cross-sectional diagram illustrating the winding body 20 of this embodiment.

[0012] Figure 3 This is an explanatory diagram of the layered structure of the winding body 20 in this embodiment.

[0013] Figure 4 This is an explanatory diagram of the winding method of the wire 10 in the first layer 31 and the second layer 32.

[0014] Figure 5A yes Figure 2B An explanatory diagram showing the arrangement of the wires 10 constituting the first spiral section 311 in the area indicated by the dashed lines. Figure 5B This is an explanatory diagram of the configuration of the first modified example of wire 10. Figure 5C This is an explanatory diagram of the configuration of the second modified example of wire 10.

[0015] Figure 6A This is an explanatory diagram of the retaining part 42. Figures 6B to 6D This is an explanatory diagram of the retaining part 42 in the modified example.

[0016] Figure 7A This is a cross-sectional view of wire 10. Figure 7B This is a cross-sectional view of wire 10 in a modified example.

[0017] Figure 8 This is an explanatory diagram of the comparative example of the wound body 20'. Detailed Implementation

[0018] Based on the description and accompanying drawings described below, at least the following matters become clear.

[0019] A receiving unit is defined, characterized by comprising: a wound body formed by winding wire; and a receiving body for receiving the wound body, the wound body having: a first spiral portion formed by winding the wire multiple times in a first direction, either clockwise or counterclockwise, wherein the distance from the center decreases with each turn; a first reversing portion disposed inside the first spiral portion, reversing the winding direction of the wire from the first direction to a second direction opposite to the first direction; and a second spiral portion disposed outside the first reversing portion, formed by winding the wire multiple times in the second direction, wherein the distance from the center increases with each turn. According to such a receiving unit, the wire receiving efficiency can be improved.

[0020] Preferably, at least a portion of the wire constituting the second helix is ​​disposed in the space between the wires constituting the first helix. This improves the wire storage efficiency. Furthermore, it is even more preferable that the wires constituting the first helix are arranged with radial spacing. By leaving radial spacing between the wires constituting the first helix and distributing at least a portion of the wires of the second helix between the wires of the first helix, it is possible to both suppress the twisting accumulated in the wire during wire pulling and improve storage efficiency.

[0021] Preferably, the wire constituting the first helical portion is in contact with the wire constituting the second helical portion. This can further improve the wire storage efficiency.

[0022] Preferably, the winding body further comprises: a third spiral portion, formed by continuously winding the wire multiple times from the second spiral portion in the second direction, with the distance from the center decreasing with each turn; a second reversing portion, disposed inside the third spiral portion, reversing the winding direction of the wire from the second direction to the first direction; and a fourth spiral portion, disposed outside the second reversing portion, formed by winding the wire multiple times in the first direction, with the distance from the center increasing with each turn. This improves the wire storage efficiency.

[0023] Preferably, the layer composed of the first spiral portion and the second spiral portion is stacked with the layer composed of the third spiral portion and the fourth spiral portion. This improves the wire storage efficiency.

[0024] Preferably, the layers composed of the first and second spiral portions are alternately and repeatedly stacked with the layers composed of the third and fourth spiral portions. This improves the wire storage efficiency.

[0025] Preferably, the wire in the layer composed of the first and second spiral portions is in contact with the wire in the layer composed of the third and fourth spiral portions in the stacking direction. This improves the wire storage efficiency.

[0026] Preferably, the aforementioned housing includes an outer periphery retaining portion that retains the outer periphery of the surrounding portion, the surrounding portion being composed of the aforementioned wire wound around the outside of the first reversing portion and the second reversing portion. This prevents the wire in the surrounding portion from collapsing.

[0027] Preferably, the aforementioned housing further includes an inner periphery retaining portion to retain the inner periphery of the aforementioned surrounding portion. This prevents the wire in the surrounding portion from collapsing on the inner side.

[0028] Preferably, the aforementioned housing further includes a reversing retaining portion that retains the first reversing portion and the second reversing portion. This prevents the wire from collapsing in the reversing portion.

[0029] Preferably, the bending stiffness of the wound wire about the neutral axis is less than its bending stiffness about an axis orthogonal to the neutral axis. This makes it easier to maintain the shape of the wound.

[0030] A winding body has been defined, characterized by having: a first spiral portion, formed by winding multiple turns of wire in a first direction, either clockwise or counterclockwise, with the distance from the center decreasing with each turn; a first reversing portion, disposed inside the first spiral portion, reversing the winding direction of the wire from the first direction to a second direction opposite to the first direction; and a second spiral portion, disposed outside the first reversing portion, formed by winding multiple turns of the wire in the second direction, with the distance from the center increasing with each turn. According to such a winding body, the wire storage efficiency can be improved.

[0031] ===This implementation method===

[0032] Figure 1 This is an explanatory diagram of the housing unit 1 in this embodiment. Figure 1 The image shows the situation where the cable 10 is pulled out from the housing unit 1. Figure 2A This is an explanatory diagram of the winding body 20 in this embodiment. Figure 2B This is a cross-sectional diagram illustrating the winding body 20 of this embodiment. Figure 3 This is an explanatory diagram of the layered structure of the winding body 20 in this embodiment.

[0033] The housing unit 1 is a component (unit) that houses the wire 10. The wire 10 is a linear component. The wire 10 includes, for example, linear components such as cables (electrical cables, optical cables, etc.) or metal wires. Here, the wire 10 is an optical cable (described later; see reference). Figure 7A The wire 10 can be constructed from a single continuous component without seams, or from multiple components connected together. When the wire 10 is seamless, it becomes advantageous for high-density storage of the wire 10. On the other hand, when multiple components are connected to form a single wire 10, it is possible to construct a long wire 10 from short components.

[0034] The housing unit 1 has a wire 10 and a housing body 40 for housing the wire 10. The wire 10 is housed in the housing unit 1 in a wound state. The wound wire 10 is referred to as the "wound body". The housing unit 1 has a wound body 20 and a housing body 40.

[0035] In the following explanation, such as Figure 1As shown, the axial direction of the generally cylindrical wound body 20 is defined as the "Z direction". Furthermore, the Z direction is sometimes referred to as the "stack direction" or "height direction". In the Z direction, viewed from the base end 20A of the wire 10, the front end 20B side is designated as the "positive side". Furthermore, the base end 20A is the end of the wire 10 at the beginning of winding. The front end 20B is the end of the wire 10 on the opposite side from the base end 20A. The front end 20B is the end (terminal) of the wire 10 at the end of winding. When the wire 10 is pulled out from the receiving unit 1, it is pulled out from the front end 20B (see reference). Figure 1 Finally, the base terminal 20A was pulled out.

[0036] Furthermore, in the following description, the direction around the axis of the generally cylindrical winding body 20 will be referred to as the "circumferential direction". The wire 10 is mainly wound along the circumferential direction. Viewed from the positive side in the Z direction, counterclockwise in the circumferential direction will be referred to as the "positive side" and clockwise as the "negative side". Additionally, in the following description, viewed from the positive side in the Z direction, the clockwise winding direction may sometimes be referred to as the "first direction" and the counterclockwise winding direction as the "second direction" (however, the counterclockwise winding direction may also be defined as the "first direction" and the clockwise winding direction as the "second direction"). Furthermore, in Figure 2B In the diagram, a negative sign is shown on the cross-section of the wire 10 wound along the first direction, and a positive sign is shown on the cross-section of the wire 10 wound along the second direction.

[0037] In the following description, the radial direction of the generally cylindrical wound body 20 will be referred to as "radial direction". The side that is further away from the center of the wound body 20 in the radial direction will be referred to as "positive side".

[0038] In this embodiment, such as Figure 1 As shown, the cable 10 can be lifted and pulled out to the Z-direction. This method of pulling out the cable 10 is sometimes referred to as flying pay-off. Furthermore, in this embodiment, in order to... Figure 1 The wire 10 is contained in a manner that prevents the twisting of the pulled-out wire 10 when it is pulled out as shown.

[0039] like Figure 2A and Figure 2B As shown, the winding body 20 has a winding portion 21 and a reversing portion 22.

[0040] The circumferential portion 21 is a portion formed by winding the wire 10 around the circumference. The circumferential portion 21 includes wire 10 wound clockwise and wire 10 wound counterclockwise. As described later, the circumferential portion 21 is composed of a first spiral portion 311, a second spiral portion 312, a third spiral portion 321, and a fourth spiral portion 322 (see reference). Figure 4Furthermore, the wrapping portion 21 in the figure is generally cylindrical, but the wire 10 can also be wound in a way that the wrapping portion 21 is a square-shaped cylindrical shape with rounded corners.

[0041] The reversing section 22 is a portion formed by reversing the winding direction to wind the wire 10. As described later, the reversing section 22 is composed of a first reversing section 313 and a second reversing section 323 that wind the wire 10 into an S-shape or a reverse S-shape (Z-shape) (see reference). Figure 4 ).

[0042] like Figure 3 As shown, the winding body 20 is a stacked structure composed of multiple layers. The winding body 20 is a structure formed by alternately stacking a first layer 31 formed by winding the wire 10 using a prescribed winding method and a second layer 32 formed by winding the wire 10 using a winding method different from the first layer 31. Figure 3 In the diagram, each layer is drawn separately, but the wires 10 constituting each layer are continuous with the wires 10 of the layers adjacent to each other in the Z direction. Figure 3 In this configuration, the wires 10 constituting each layer are wound in a manner perpendicular to the Z-direction. However, each layer may not be configured to be completely perpendicular to the Z-direction. Additionally, a portion of the wires 10 constituting each layer may be wound in a way that deviates from the Z-direction plane within the Z-direction.

[0043] Figure 4 This is an explanatory diagram of the winding method for wire 10 in the first layer 31 and the second layer 32. Figure 4 In the drawing, the wires 10 of each part are drawn separately, but the wires 10 constituting each part are continuous with the wires 10 constituting adjacent parts.

[0044] The wire 10 constituting the first layer 31 has a first spiral portion 311, a first reversing portion 313, and a second spiral portion 312 in sequence from the base end side. The first layer 31 is a layer composed of the first spiral portion 311 and the second spiral portion 312.

[0045] The first spiral section 311 is formed by winding the wire 10 into a spiral shape multiple times in a first direction (clockwise). In the first spiral section 311, the wire 10 is wound in such a way that the distance from the center decreases each time the wire 10 is wound around. In the first spiral section 311, the wire 10 is wound into a spiral shape from the outside to the inside. Furthermore, when the wire 10 is wound into a spiral shape multiple times, the length of the outermost turn of the wire 10 is longer than the length of the innermost turn. At the inner end (the end on the front end side) of the first spiral section 311, the wire 10 is continuously transferred from the first spiral section 311 to the first reversing section 313.

[0046] The first reversing section 313 is located inside the first spiral section 311 (and the second spiral section 312). In the first reversing section 313, the winding direction of the wire 10 is reversed from a first direction (clockwise) to a second direction (counterclockwise). Here, when viewed from the Z-direction, the first reversing section 313 is wound into a reverse S-shape. At one end of the first reversing section 313 (the end on the base side), the wire 10 is continuously transferred from the first spiral section 311 to the first reversing section 313. At the other end of the first reversing section 313 (the end on the front side), the wire 10 is continuously transferred from the first reversing section 313 to the second spiral section 312.

[0047] The second spiral section 312 is formed by winding the wire 10 into a spiral shape multiple times in the second direction (counterclockwise). In the second spiral section 312, the wire 10 is wound in such a way that the distance from the center increases with each turn of the wire 10. In the second spiral section 312, the wire 10 is wound into a spiral shape from the inside to the outside. At the inner end (base end side) of the second spiral section 312, the wire 10 is continuously transferred from the first reversing section 313 to the second spiral section 312. Furthermore, at the outer end (front end side) of the second spiral section 312, the wire 10 is continuously transferred from the second spiral section 312 to the third spiral section 321. That is, the wire 10 is continuously transferred between the first layer 31 and the second layer 32 (the second layer 32 adjacent on the positive side in the Z direction).

[0048] When the wire 10 of the first layer 31 is pulled out along the Z direction, the wire 10 constituting the second spiral portion 312 is pulled out first. In the second spiral portion 312, the wire 10 is wound along the second direction, so when the wire 10 of the second spiral portion 312 is pulled out, the pulled-out wire 10 twists in a predetermined direction. After the wire 10 of the second spiral portion 312 is pulled out, the wire 10 of the first reversing portion 313 and the first spiral portion 311 is pulled out. In the first spiral portion 311, the wire 10 is wound along the opposite direction (first direction) to the second spiral portion 312, so when the wire 10 of the first spiral portion 311 is pulled out, the twisting of the wire 10 is canceled out. In this way, in this embodiment, so as to... Figure 1 The wire 10 is contained in a manner that prevents the twisting of the pulled-out wire 10 when it is pulled out as shown.

[0049] However, as a winding method for the wire 10 capable of suppressing twisting of the wire 10, there are methods such as... Figure 8 The method shown involves winding the wire 10 into a figure-eight shape. However, in Figure 8 In the winding method of the wire 10 shown, the length of the wire 10 that can be accommodated is short in the plane perpendicular to the direction (Z direction) of the stacking of the intersection point of the wire 10 (the reversing part where the winding direction of the wire 10 is reversed). Therefore, in Figure 8 In the winding method of the comparative example shown, the containment efficiency of the wire 10 is reduced.

[0050] In contrast, in this embodiment, the wire is wound into a spiral shape 10 times and multiple turns (approximately 4 turns here) in the first spiral section 311 and the second spiral section 312. Therefore, in this embodiment, compared with... Figure 8 Compared to the comparative example shown, more wires 10 can be accommodated in the direction perpendicular to the Z direction, thereby improving the accommodating efficiency of the wires 10.

[0051] Figure 5A yes Figure 2B An explanatory diagram showing the arrangement of the wires 10 constituting the first spiral section 311 in the area indicated by the dashed lines.

[0052] exist Figure 5A In the diagram, dashed lines show the lines L1 connecting the upper edges of the wires 10 that form the first spiral section 311 to each other. Additionally, Figure 5A The dashed lines in the diagram show the lines L2 connecting the lower edges of the wires 10 that form the first spiral section 311. (See diagram for reference.) Figure 5A As shown, a space S is provided between the wires 10 constituting the first spiral section 311. The space S is the space enclosed by the side of the wire 10, wire L1, and wire L2. Figure 5A The diagram shows the spacing C of the narrowest part of space S in the radial direction.

[0053] The wire 10 constituting the first spiral portion 311 is wound into a spiral shape from the outside to the inside in a first direction, thus the space S formed by the first spiral portion 311 becomes a spiral space from the outside to the inside along the first direction. Therefore, when viewing the space S along the second direction, the space S formed by the first spiral portion 311 becomes a spiral space from the inside to the outside in the second direction. Therefore, in this embodiment, the wire 10 constituting the second spiral portion 312 can be arranged along the spiral space S formed by the first spiral portion 311. The wire 10 of the second spiral portion 312 is arranged along the space S formed by the first spiral portion 311, thereby... Figure 2B As shown, in this embodiment, in the first layer 31, the wires 10 constituting the first spiral portion 311 (the wires 10 marked with a negative sign in the figure) and the wires 10 constituting the second spiral portion 312 (the wires 10 marked with a positive sign in the figure) are arranged alternately in the radial direction. Furthermore, since the wires 10 constituting the second spiral portion 312 are arranged between the wires 10 constituting the first spiral portion 311, it is preferable that the number of turns of the wires 10 in the first spiral portion 311 is the same as the number of turns of the wires 10 in the second spiral portion 312.

[0054] In this embodiment, the space S between the wires 10 constituting the first spiral section 311 (refer to...) Figure 5AThe wire 10 constituting the second spiral section 312 is configured (see reference). Figure 2B ).like Figure 5A As shown, in this embodiment, the spacing C of the narrowest part in the radial direction of space S is set to be the same as the diameter D of wire 10, such as... Figure 2B As shown, the wire 10 of the second spiral portion 312 is disposed inside the space S. By disposing of the wire 10 of the second spiral portion 312 within the space S formed by the first spiral portion 311, wasted space within the winding body 20 can be reduced, thereby improving storage efficiency. However, all portions of the wire 10 of the second spiral portion 312 may not be disposed inside the space S. Furthermore, by disposing of the wire 10 between the wires 10 constituting the first spiral portion 311 (see reference...) Figure 5A By arranging the wires 10 constituting the second spiral portion 312, the layer formed by the first spiral portion 311 and the layer formed by the second spiral portion 312 can be the same layer, thus suppressing the layer thickness (Z-direction dimension) of the first layer 31 formed by the first spiral portion 311 and the second spiral portion 312. That is, by using the space S (refer to...) between the wires 10 constituting the first spiral portion 311... Figure 5A The wire 10 that forms the second spiral section 312 is configured such that the thickness of the first layer 31 is the same as the thickness of the first spiral section 311 and the thickness of the second spiral section 312.

[0055] Figure 5B This is an explanatory diagram of the configuration of a first modified example of the wire 10. In the first modified example, the spacing C of the narrowest part in the radial direction of the space S is set to be narrower than the diameter D of the wire 10. Therefore, in the first modified example, it is not possible to arrange all parts of the wire 10 of the second spiral portion 312 inside the space S; only a portion of the wire 10 of the second spiral portion 312 is arranged inside the space S. However, in the configuration of the first modified example, compared to the case where the wire 10 of the second spiral portion 312 is not arranged in the space S at all, the wasted space within the winding body 20 can be reduced, thus improving the storage efficiency. Therefore, it is preferable that the space S between the wires 10 constituting the first spiral portion 311 (refer to...) Figure 5A At least a portion of the wire 10 that constitutes the second spiral section 312 is configured.

[0056] Figure 5CThis is an explanatory diagram of a second modified example of the arrangement of wire 10. In this second modified example, the wires 10 constituting the first helical portion 311 are in radial contact with each other. That is, in the second modified example, the wires 10 constituting the first helical portion 311 are not radially spaced (the aforementioned spacing C is almost zero). Therefore, in the second modified example, it is almost impossible to arrange the wires 10 of the second helical portion 312 (the wires 10 marked with a positive sign in the figure) inside the space S. However, in the arrangement of the second modified example, the wasted space within the winding body 20 can be reduced, thus improving the storage efficiency.

[0057] according to Figure 2B , Figure 5B The configuration shown, corresponding to the spacing C between the wires 10 in the first spiral portion 311, reduces the number of turns of the first spiral portion 311 (and the second spiral portion 312) compared to the second variation. Therefore, when the wires 10 are pulled out from the receiving unit 1, the twisting accumulated in the wires 10 can be suppressed. Furthermore, according to... Figure 2B , Figure 5B In the configuration shown, at least a portion of the wires 10 constituting the second spiral portion 312 are arranged between the wires 10 constituting the first spiral portion 311. Therefore, even if the number of turns of the first spiral portion 311 and the second spiral portion 312 is reduced (in other words, even if there is a gap C between the wires 10 of the first spiral portion 311 (or the second spiral portion 312)), the storage efficiency will not be reduced. Therefore, in order to achieve both suppressing the twisting accumulated in the wires 10 and improving the storage efficiency, it is preferable that the wires 10 of the first spiral portion 311 (and the second spiral portion 312) are spaced apart from each other, and at least a portion of the wires 10 constituting the second spiral portion 312 are arranged between the wires 10 constituting the first spiral portion 311.

[0058] In addition, Figure 2B In the diagram, the Z-direction position of the wire 10 constituting the first helical portion 311 is drawn to be the same as the Z-direction position of the wire 10 constituting the second helical portion 312. However, the first helical portion 311 and the second helical portion 312 may also be slightly offset in the Z-direction (for example, offset in the Z-direction by a factor smaller than the diameter of the wire 10). Alternatively, a portion of the wire 10 constituting either the first helical portion 311 or the second helical portion 312 may be slightly offset in the Z-direction. Furthermore, as... Figure 5B , Figure 5C As shown, if the layer formed by the first spiral portion 311 and the layer formed by the second spiral portion 312 are offset in the Z direction, the thickness (dimension in the Z direction) of the first layer 31 becomes thicker. Therefore, as Figure 5AAs shown, it is preferable to arrange the wires 10 constituting the second spiral section 312 in the space S between the wires 10 constituting the first spiral section 311, thereby making the layer constituting the first spiral section 311 and the layer constituting the second spiral section 312 the same layer.

[0059] In addition, such as Figure 2B As shown, in this embodiment, the wire 10 constituting the first helical portion 311 contacts the wire 10 constituting the second helical portion 312. Specifically, in this embodiment, the wire 10 constituting the second helical portion 312 (or the first helical portion 311) contacts the wire 10 constituting the first helical portion 311 (or the second helical portion 312) on both radially opposite sides. This allows for high-density storage of the wire 10 in a direction perpendicular to the Z-direction. However, a gap may also be formed between the wire 10 constituting the first helical portion 311 and the wire 10 constituting the second helical portion 312.

[0060] The wire 10 constituting the second layer 32 has a third spiral portion 321, a second reversing portion 323 and a fourth spiral portion 322 in sequence from the base end side.

[0061] The third spiral section 321 is formed by winding the wire 10 into a spiral shape multiple times in the second direction (counterclockwise). In the third spiral section 321, the wire 10 is wound in such a way that the distance from the center decreases each time the wire 10 is wound. In the third spiral section 321, the wire 10 is wound into a spiral shape from the outside to the inside. At the outer end (base end) of the third spiral section 321, the wire 10 is continuously transferred from the second spiral section 312 to the third spiral section 321. Furthermore, at the inner end (front end) of the third spiral section 321, the wire 10 is continuously transferred from the third spiral section 321 to the second reversing section 323.

[0062] The second reversing section 323 is located inside the third spiral section 321 (and the fourth spiral section 322). In the second reversing section 323, the winding direction of the wire 10 is reversed from the second direction (counterclockwise) to the first direction (clockwise). Here, when viewed from the Z-direction, the second reversing section 323 is wound into an S-shape. At one end of the second reversing section 323 (the end on the base side), the wire 10 is continuously transferred from the third spiral section 321 to the second reversing section 323. At the other end of the second reversing section 323 (the end on the front side), the wire 10 is continuously transferred from the second reversing section 323 to the fourth spiral section 322.

[0063] The fourth spiral section 322 is formed by winding the wire 10 into a spiral shape multiple times in the first direction (clockwise). In the fourth spiral section 322, the wire 10 is wound in such a way that the distance from the center increases with each turn of the wire 10. In the fourth spiral section 322, the wire 10 is wound into a spiral shape from the inside to the outside. At the inner end (base end side) of the fourth spiral section 322, the wire 10 is continuously transferred from the second reversing section 323 to the fourth spiral section 322. Furthermore, at the outer end (front end side) of the fourth spiral section 322, the wire 10 is continuously transferred from the fourth spiral section 322 to the first spiral section 311. That is, the wire 10 is continuously transferred between the second layer 32 and the first layer 31 (the first layer 31 adjacent on the positive side in the Z direction).

[0064] When the wire 10 of the second layer 32 is pulled out along the Z direction, the wire 10 constituting the fourth spiral section 322 is pulled out first. In the fourth spiral section 322, the wire 10 is wound along the second direction, so when the wire 10 of the fourth spiral section 322 is pulled out, the pulled-out wire 10 twists in a predetermined direction. After the wire 10 of the fourth spiral section 322 is pulled out, the wires 10 of the second reversing section 323 and the third spiral section 321 are pulled out. In the third spiral section 321, the wire 10 is wound along the opposite direction (first direction) to the fourth spiral section 322, so when the wire 10 of the third spiral section 321 is pulled out, the twisting of the wire 10 is canceled out. Furthermore, after the wire 10 of the third spiral section 321 is pulled out, as already explained, the wire 10 of the first layer 31 is pulled out.

[0065] The wire 10 constituting the third spiral portion 321 is wound into a spiral shape from the outside to the inside in the second direction. Therefore, the space S formed by the third spiral portion 321 becomes a spiral space from the outside to the inside along the second direction. Thus, when viewing the space S along the first direction, the space S formed by the third spiral portion 321 becomes a spiral space from the inside to the outside in the first direction. Therefore, in the third spiral portion 321 and the fourth spiral portion 322, similar to the first spiral portion 311 and the second spiral portion 312, the wire 10 constituting the fourth spiral portion 322 can be arranged along the spiral space S formed by the third spiral portion 321. The wire 10 of the fourth spiral portion 322 is arranged along the space S formed by the third spiral portion 321, thereby... Figure 2BAs shown, in the second layer 32, the wires 10 constituting the third spiral portion 321 (the positive wires 10 in the figure) and the wires 10 constituting the fourth spiral portion 322 (the negative wires 10 in the figure) are arranged alternately in the radial direction. Furthermore, since the wires 10 constituting the fourth spiral portion 322 are arranged between the wires 10 constituting the third spiral portion 321, it is preferable that the number of turns of the wires 10 in the third spiral portion 321 is the same as the number of turns of the wires 10 in the fourth spiral portion 322.

[0066] In the third spiral section 321 and the fourth spiral section 322, similarly to the first spiral section 311 and the second spiral section 312, the wire is wound into a spiral shape 10 times or more. Therefore, in the second layer 32, similarly to the first layer 31, the wire is wound into a spiral shape. Figure 8 Compared to the comparative example shown, the storage efficiency of the wire 10 can be improved. Furthermore, in the third spiral section 321 and the fourth spiral section 322, at least a portion of the wire 10 constituting the other spiral section is also arranged in the space S formed by the wire 10 constituting one spiral section. This reduces wasted space within the winding body 20, thus improving the storage efficiency of the wire 10. In addition, to achieve both suppressing the accumulation of twisting in the wire 10 and improving storage efficiency, similar to the first spiral section 311 and the second spiral section 312 described above, it is preferable to leave a gap C between the wires 10 in the third spiral section 321 (and the fourth spiral section 322), and to arrange at least a portion of the wire 10 constituting the fourth spiral section 322 between the wires 10 constituting the third spiral section 321.

[0067] In addition, Figure 2B In this embodiment, the Z-direction position of the wire 10 constituting the third helical portion 321 is drawn to be the same as the Z-direction position of the wire 10 constituting the fourth helical portion 322. However, a portion of the wire 10 constituting the third helical portion 321 or the fourth helical portion 322 may be slightly offset in the Z-direction. Furthermore, in this embodiment, the wire 10 constituting the third helical portion 321 is in contact with the wire 10 constituting the fourth helical portion 322, but a gap may also be formed between the wire 10 constituting the third helical portion 321 and the wire 10 constituting the fourth helical portion 322.

[0068] Alternatively, the second layer 32 can be formed by the third spiral portion 321 instead of the fourth spiral portion 322 (and the second reverse portion 323). Even with this structure, the wire 10 can be contained in a way that suppresses the twisting of the pulled-out wire 10. In addition, in the case of such a structure, it is preferable to provide a layer formed by winding the wire 10 in the opposite direction to the third spiral portion 321, as a layer different from the first layer 31 and the second layer 32. As a result, the twisting when the wire 10 is pulled out of the second layer 32 (the layer formed only by the third spiral portion 321) can be canceled out with the twisting when the wire 10 of other layers is pulled out (the wire 10 wound in the opposite direction to the third spiral portion 321).

[0069] Furthermore, in this embodiment, the first layer 31, composed of the first spiral portion 311 and the second spiral portion 312 (and the first reversing portion 313), is stacked with the second layer 32, composed of the third spiral portion 321 and the fourth spiral portion 322 (and the second reversing portion 323). By stacking the first layer 31 and the second layer 32, the storage efficiency of the wire 10 can be improved. In addition, in this embodiment, the winding direction of the wire 10 is opposite in the first layer 31 and the second layer 32, so the wire 10 can be continuously transferred between the second spiral portion 312 of the first layer 31 and the third spiral portion 321 of the second layer 32, thus allowing the first layer 31 and the second layer 32 to be stacked. Furthermore, to ensure that the first layer 31 and the second layer 32 are of the same size, it is preferable that the number of turns of each of the first spiral portion 311, the second spiral portion 312, the third spiral portion 321, and the fourth spiral portion 322 is the same.

[0070] In addition, such as Figure 3 As shown, in this embodiment, the first layer 31 and the second layer 32 are alternately and repeatedly stacked. This improves the storage efficiency of the wire 10. Furthermore, in this embodiment, since the winding direction of the wire 10 is opposite in the first layer 31 and the second layer 32, the wire 10 can be continuously transferred between the second spiral portion 312 of the first layer 31 and the third spiral portion 321 of the second layer 32, and the wire 10 can be continuously transferred between the fourth spiral portion 322 of the second layer 32 and the first spiral portion 311 of the first layer 31. Therefore, the alternating and repeated stacking of the first layer 31 and the second layer 32 can be achieved.

[0071] In addition, such as Figure 2B As shown, in this embodiment, the wire 10 of the first layer 31 and the wire 10 of the second layer 32 are in the Z direction (stack direction). Figure 2B Contact is made in the vertical direction. This allows for high-density storage of the wires 10 in the Z direction. However, it is also possible to have contact between the wires 10 of the first layer 31 and the wires 10 of the second layer 32 in the Z direction (stack direction). Figure 2B There are gaps in the vertical direction.

[0072] The housing 40 is a component that houses the wire 10. In this embodiment, the housing 40 houses the wire 10 (winding body 20) wound as described above. In this embodiment, the housing 40 is a skeletal structure composed of multiple frames (rod components). However, the housing 40 may also be constructed as a box (or similar structure) using a surface material. Figure 1 As shown, the housing 40 is configured to open the Z-direction front side of the winding body 20 and house the winding body 20, thereby enabling the wire 10 to be pulled out along the Z-direction. However, when the housing 40 is configured as a box, a hole (opening) can be provided in the surface material constituting the housing 40, and the wire 10 can be pulled out along the Z-direction from the hole.

[0073] The housing 40 has a base portion 41 and a retaining portion 42. For example... Figure 2B As shown, the base portion 41 is the lowest layer component supporting the wire 10 (wound body 20). The base portion 41 is, for example, constructed from a tray. Figure 1 As shown, the holding part 42 is a component that holds the wound wire 10 (wound body 20). By contacting the wire 10 (wound body 20), the holding part 42 can maintain the shape of the wound body 20. Furthermore, by holding the wire 10 (wound body 20) by the holding part 42, the collapse of the wound body 20 can be prevented when the wire 10 is pulled out, thus making it easier to pull the wire 10 out of the housing 40. Figure 1 As shown, in this embodiment, the retaining part 42 is composed of a plurality of rod members (e.g., pins) that stand upright from the support surface of the base part 41 in the Z direction. Thus, the retaining part 42 can open the Z-direction positive side of the wound body 20 and retain the wound body 20.

[0074] Figure 6A This is an explanatory diagram of the retaining part 42. Furthermore, Figures 6B to 6D This is an explanatory diagram of the retaining part 42 in the modified example. Hereinafter, it will also be used... Figure 1 The retaining part 42 will be explained.

[0075] The retaining part 42 has an outer peripheral retaining part 421, an inner peripheral retaining part 422 and a reverse retaining part 423.

[0076] The outer peripheral holding portion 421 is the portion that holds the outer periphery 21A of the surrounding portion 21 of the winding body 20 (the portion consisting of the wire 10 wound around the outside of the reversing portion 22). The outer peripheral holding portion 421 holds the outer periphery of the first spiral portion 311, the second spiral portion 312, the third spiral portion 321, and the fourth spiral portion 322. The wire 10 wound circumferentially is intended to stretch radially, but the outer peripheral holding portion 421 contacts the outer periphery 21A of the winding body 20, thereby maintaining the shape of the winding body 20. As will be described later, when the wire 10 has the tension resisting body 13, the force required for the wire 10 to stretch radially increases, therefore the outer peripheral holding portion 421 becomes particularly effective in the holding portion 42. In this embodiment, the plurality of bar members constituting the outer peripheral holding portion 421 are arranged substantially uniformly circumferentially in contact with the outer periphery 21A of the generally cylindrical winding body 20. Alternatively, the outer peripheral retaining portion 421 may be formed from a plate-shaped sheet material. In this case, it is preferable that the inner surface of the sheet material contacts the outer periphery 21A of the wound body 20. For example, when the housing 40 is formed into a box shape by means of the sheet material, the inner surface of the sheet material forming the side of the housing 40 contacts the outer periphery 21A of the wound body 20, thereby the sheet material forming the side of the housing 40 can also function as the outer peripheral retaining portion 421.

[0077] The inner circumferential holding portion 422 is the portion that holds the inner circumference 21B of the surrounding portion 21 of the wound body 20. Furthermore, the annular space between the inner circumferential holding portion 422 and the outer circumferential holding portion 421 ( Figure 6A The space enclosed by two circular dotted lines becomes the receiving portion of the surrounding part 21 of the coiled body 20. Additionally, the space inside the inner circumference retaining part 422 ( Figure 6A The space enclosed by the inner circular dotted line becomes the receiving portion of the reversing portion 22 of the winding body 20. The inner circumference 21B of the winding body 20 is held by the inner circumference holding portion 422, thereby preventing the wire 10 of the winding portion 21 from collapsing inside when the wire 10 is pulled out. In addition, as Figure 6C and Figure 6D As shown, the retaining part 42 may also not have an inner peripheral retaining part 422.

[0078] The reversing holding portion 423 is the part that holds the reversing portion 22 of the winding body 20. In the reversing portion 22 where the winding direction of the wire 10 is reversed, the wire 10 becomes unstable and prone to collapse. Therefore, by holding the reversing portion 22 of the winding body 20 by the reversing holding portion 423, the shape collapse of the reversing portion 22 can be suppressed. The reversing holding portion 423 has a first reversing holding portion 423A and a second reversing holding portion 423B.

[0079] The first reversing holding section 423A holds the portion of the wire 10 that is wound in the first direction and the portion that is wound in the second direction, respectively. Thus, the first reversing holding section 423A can hold the wire 10 constituting the first reversing section 313 in a reverse S-shape (or S-shape).

[0080] The second reversing holding section 423B holds the portion of the wire 10 that is wound in the second direction and the portion that is wound in the first direction, respectively. Thus, the second reversing holding section 423B can hold the wire 10 constituting the second reversing section 323 in an S-shape (or an inverted S-shape).

[0081] In this embodiment, the first reverse holding portion 423A and the second reverse holding portion 423B are each composed of multiple rod members. The rod members constituting the first reverse holding portion 423A and the second reverse holding portion 423B are disposed in the space enclosed between the first reverse portion 313 and the second reverse portion 323. However, the first reverse holding portion 423A and the second reverse holding portion 423B may not be composed of rod members. Alternatively, the first reverse holding portion 423A and the second reverse holding portion 423B may be disposed outside the space enclosed between the first reverse portion 313 and the second reverse portion 323.

[0082] Figure 6A (and Figure 6B The inner circumferential holding portion 422 shown has a first inner circumferential holding portion 422A and a second inner circumferential holding portion 422B. The first inner circumferential holding portion 422A contacts the inner circumference 21B of the surrounding portion 21 of the winding body 20 and is disposed on the outside of the space enclosed by the first reversing portion 313 and the second reversing portion 323. The second inner circumferential holding portion 422B contacts the inner circumference 21B of the surrounding portion 21 of the winding body 20 and is disposed in the space enclosed by the first reversing portion 313 and the second reversing portion 323. Thus, the second inner circumferential holding portion 422B can simultaneously perform the functions of holding the inner side of the surrounding portion 21 of the winding body 20 and holding the first reversing portion 313 and the second reversing portion 323.

[0083] However, as Figure 6B and Figure 6D As shown, the holding part 42 may also lack the reversing holding part 423. However, in the reversing part 22 where the winding direction of the wire 10 is reversed, the wire 10 becomes unstable and easily collapses. Therefore, if the holding part 42 does not have the reversing holding part 423, as... Figure 6B As shown, it is preferable to arrange a part of the component constituting the inner circumference retaining portion 422 (the second inner circumference retaining portion 422B) in the space enclosed between the first reversing portion 313 and the second reversing portion 323.

[0084] The aforementioned retaining portion 42 has an outer peripheral retaining portion 421, an inner peripheral retaining portion 422, and a reversing retaining portion 423. However, the retaining portion 42 can also have other structures as long as it can retain the wound body 20. For example, the shape of the wound body 20 (especially the winding portion 21) can also be maintained by positioning a rod member (e.g., a pin) between the wire 10 of the first helical portion 311 (or the third helical portion 321) and the wire 10 of the second helical portion 312 (or the fourth helical portion 322).

[0085] Furthermore, the aforementioned retaining part 42 is composed of multiple rod components. However, the shape of the wound body 20 can also be maintained by binding the wire 10 constituting the wrapping part 21 of the wound body 20 with a binding member. However, when the retaining body is composed of a binding member, the binding member needs to be untied when the wire 10 is pulled out in the Z direction. In addition, in the aforementioned receiving unit 1, the wound body 20 formed by winding the wire 10 is received in the receiving body 40. However, as long as the shape of the wound body 20 can be maintained, it is not necessary to receive the wound body 20 in the receiving body 40. If the wound body 20 can be shipped as a single unit, the handling efficiency is improved.

[0086] Figure 7A This is a cross-sectional view of the wire 10. As already explained, in this embodiment, the wire 10 is an optical cable having an optical fiber 11 and an outer sheath 12 for housing the optical fiber 11. In this embodiment, a tensile strength body 13 is embedded in the outer sheath 12.

[0087] like Figure 7A As shown, sometimes an anti-tension body 13 is configured as a receiving portion that sandwiches the outer skin 12. In Figure 7A In the case of wire 10 shown, the bending stiffness varies depending on the direction of bending. Furthermore, bending stiffness refers to the product (EI) of the moment of inertia (I) of the cross-section of wire 10 and the Young's modulus (E) of wire 10. When wire 10 has a tensile body 13, the bending stiffness of wire 10 depends primarily on the arrangement of the tensile body 13. For example, as... Figure 7A As shown, when the line connecting the centers of the anti-tension bodies 13 to each other is designated as the y-axis, and the line passing through the center of the wire 10 and perpendicular to the y-axis is designated as the x-axis, the bending stiffness about the y-axis is smaller than the bending stiffness about the x-axis. Therefore, when the bending stiffness varies depending on the direction of bending the wire 10, it is preferable to bend the wire 10 in the direction of lower bending stiffness when winding the wire 10. In this embodiment, it is preferable to... Figure 7A The wire 10 shown is wound in a manner that bends around the y-axis. By using... Figure 7A The y-axis of the wire 10 shown becomes Figure 1 The wire 10 is wound along the Z-axis, thus easily maintaining the shape of the wound body 20. Furthermore, assuming... Figure 7A When the wire 10 shown is wound in a manner that bends around the x-axis, as shown... Figure 1 As shown, when wire 10 is lifted along the Z direction, wire 10 easily collapses. Therefore, by using... Figure 7A The method of winding the wire 10 by bending it around the y-axis also has the advantage of preventing the coil 20 from collapsing when the wire 10 is pulled out.

[0088] Figure 7B This is a cross-sectional view of wire 10 in a modified example. For example... Figure 7B As shown, the wire 10 can also be an optical cable with uniform bending stiffness achieved by uniformly distributing the tensile strength elements 13, thus unaffected by the bending direction. Alternatively, the wire 10 may not have the tensile strength elements 13. Furthermore, the wire 10 may not be an optical cable.

[0089] ===Others===

[0090] The above-described embodiments are provided for ease of understanding of the present invention and are not intended to limit the scope of the invention. The present invention can certainly be modified and improved without departing from its spirit, and the present invention includes its equivalents.

[0091] Explanation of reference numerals in the attached figures

[0092] 1…Retaining unit; 10…Wire; 11…Optical fiber; 12…Outer sheath; 13…Tension-resistant body; 20…Wound body; 20A…Base end; 20B…Front end; 21…Wrapping part; 21A…Outer periphery; 21B…Inner periphery; 22…Reversing part; 31…First layer; 311…First spiral part; 312…Second spiral part; 313…First reversing part; 32…Second layer; 321…Third spiral part; 322…Fourth spiral part; 323…Second reversing part; 40…Retaining body; 41…Base part; 42…Retaining part; 421…Outer periphery retaining part; 422…Inner periphery retaining part; 422A…First inner periphery retaining part; 422B…Second inner periphery retaining part; 423…Reversing retaining part; 423A…First reversing retaining part; 423B…Second reversing retaining part.

Claims

1. A containment unit, characterized in that, have: A wound body made by winding wire; and A housing that contains the wound body. The wound body has: The first spiral section is formed by winding the wire multiple times in a first direction, either clockwise or counterclockwise, with the distance from the center decreasing with each turn. The first reversing part is disposed inside the first spiral part, so that the winding direction of the wire is reversed from the first direction to a second direction opposite to the first direction; The second spiral section is located outside the first reversing section and is formed by winding the wire multiple times in the second direction. Each time it is wound, the distance from the center increases. as well as The third spiral section is formed by continuously winding the wire multiple times from the second spiral section in the second direction, with the distance from the center decreasing with each turn.

2. The housing unit according to claim 1, characterized in that, At least a portion of the wire constituting the second spiral portion is disposed in the space between the wires constituting the first spiral portion.

3. The housing unit according to claim 2, characterized in that, The wires constituting the first spiral section are arranged with radial spacing.

4. The containment unit according to claim 2 or 3, characterized in that, The wire constituting the first spiral portion comes into contact with the wire constituting the second spiral portion.

5. The housing unit according to claim 1, characterized in that, The wound body also has: The second reversing section, disposed inside the third spiral section, reverses the winding direction of the wire from the second direction to the first direction; and The fourth spiral section is located outside the second reversing section and is formed by winding the wire multiple times in the first direction, with the distance from the center increasing with each turn.

6. The containment unit according to claim 5, characterized in that, The layer composed of the first spiral portion and the second spiral portion is stacked with the layer composed of the third spiral portion and the fourth spiral portion.

7. The containment unit according to claim 6, characterized in that, The layers formed by the first spiral portion and the second spiral portion are alternately and repeatedly stacked with the layers formed by the third spiral portion and the fourth spiral portion.

8. The containment unit according to claim 6 or 7, characterized in that, The wire of the layer composed of the first spiral portion and the second spiral portion is in contact with the wire of the layer composed of the third spiral portion and the fourth spiral portion in the stacking direction.

9. The housing unit according to any one of claims 5 to 8, characterized in that, The housing has an outer periphery retaining portion that retains the outer periphery of the surrounding portion, the surrounding portion being composed of the wire wound around the outside of the first reversing portion and the second reversing portion.

10. The housing unit according to claim 9, characterized in that, The containment body further includes an inner circumference retaining portion that retains the inner circumference of the surrounding portion.

11. The housing unit according to claim 9 or 10, characterized in that, The containment body further includes: a reversing retaining part, which retains the first reversing part and the second reversing part.

12. The housing unit according to any one of claims 1 to 11, characterized in that, The bending stiffness of the surrounding wire about the neutral axis is less than the bending stiffness about an axis orthogonal to the neutral axis.

13. A wound body, characterized in that, have: The first spiral section is formed by winding the wire multiple times in a first direction, either clockwise or counterclockwise, with the distance from the center decreasing with each turn. The first reversing part is disposed inside the first spiral part, so that the winding direction of the wire is reversed from the first direction to a second direction opposite to the first direction; The second spiral section is located outside the first reversing section and is formed by winding the wire multiple times in the second direction. Each time it is wound, the distance from the center increases. as well as The third spiral section is formed by continuously winding the wire multiple times from the second spiral section in the second direction, with the distance from the center decreasing with each turn.

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