Device for winding sheet-like member

Abstract

There is provided a device for winding a sheet-like member, the device including a first rotary support member (43), a sliding member (60), and a coil spring (50). The coil spring (50) has a hook (54). A first rotary support member (43) and / or a sliding member (60) to which an end portion of a coil spring (50) is attached have a hook support portion (70) on which a groove (71) is formed. The groove (71) has an insertion portion (76) provided with an end opening (77) into which the hook (54) can be inserted in the axial direction of the coil spring (50), and a holding portion (78) that holds the hook (54). The insertion portion (76) and the holding portion (78) are provided at positions spaced apart from each other in an axial direction of the coil spring (50) and spaced apart from each other in a circumferential direction of the coil portion (51), and a portion of the groove (71) between the insertion portion (76) and the holding portion (78) is continuous so that the hook (54) can slide from the end opening (77) to the holding portion (78).

Description

Technical Field

[0001] The present disclosure relates to a winding device for a sheet member. Background Art

[0002] Patent Document 1 discloses a sheet winding device for a vehicle, which rotatably biases a winding shaft in the sheet winding direction by a spiral spring. In the spiral spring of the sheet winding device for a vehicle, legs closer to the end thereof than to the coil portion extend outward from the coil portion in the longitudinal direction of the spiral spring. Further, the legs closer to the end thereof than to the coil portion are folded backward toward the center of the coil portion, and the ends of the ends are formed in a shape extending around the central axis of the coil portion. The legs on both sides of the coil portion are assembled to corresponding spring holding portions provided on a fixed shaft and a support member so as to extend in the longitudinal direction of the spiral spring. At this time, the legs are inserted and attached to coupling holes formed in a direction perpendicular to the longitudinal direction of the fixed shaft or the support member.

[0003] List of Cited Documents

[0004] Patent Documents

[0005] Patent Document 1: JP2014-083891A Summary of the Invention

[0006] Technical Problem

[0007] In the sheet winding device for a vehicle described in Patent Document 1, since the coupling holes of the fixed shaft or the support member are formed in a direction perpendicular to the length direction of the spring holding portion, when the legs are inserted into the coupling holes of the spring holding portion, the ends of the legs need to be bent outward from the outer periphery of the spring holding portion, and thus the assembly is difficult.

[0008] Therefore, an object of the present disclosure is to easily assemble the end portion of the spiral spring in a winding device for a sheet member.

[0009] Solution to the Problem

[0010] To solve the above problems, a winding device for a sheet member, the winding device comprising:

[0011] A sheet member;

[0012] A winding shaft, one end of the sheet member being attached to the winding shaft, the winding shaft being a hollow shaft;

[0013] A housing configured to accommodate the sheet member, the housing including a first rotary support member and a second rotary support member, the first rotary support member including a first support portion configured to support one end of the winding shaft for rotation relative to the first rotary support member, and the second rotary support member including a second support portion configured to support the other end of the winding shaft for rotation relative to the second rotary support member;

[0014] A sliding member disposed inside the winding shaft, the sliding member configured to engage with the winding shaft so as not to rotate relative to the winding shaft and so as to slide along the longitudinal direction of the winding shaft; and

[0015] A helical spring disposed inside the winding shaft and configured to bias the winding shaft in the winding direction of the sheet member, the helical spring including a coil portion, a first attachment portion, and a second attachment portion, the coil portion configured to elongate and contract along the longitudinal direction, the first attachment portion being continuous with one end of the coil portion and attached to the first support portion, and the second attachment portion being continuous with the other end of the coil portion and attached to a support portion formed on the sliding member,

[0016] wherein at least one of the first attachment portion and the second attachment portion includes a hook that extends inwardly relative to the coil portion in a direction intersecting the axial direction of the coil portion when viewed in the axial direction of the coil portion,

[0017] At least one of the first support portion and the support portion includes a hook support portion in which a groove configured to hold the hook is formed,

[0018] The groove includes an insertion portion and a holding portion, the hook being configured to be inserted into the insertion portion along the axial direction, and the holding portion being configured to hold the hook,

[0019] The insertion portion and the holding portion are disposed at positions separated from each other along the axial direction of the coil portion and separated from each other along the circumferential direction of the coil portion, and

[0020] A portion of the groove between the insertion portion and the holding portion is continuous such that the hook is configured to slide from the insertion portion to the holding portion.

[0021] Advantages of the present invention

[0022] According to such a winding device for a sheet member, the ends of the helical spring can be easily assembled. Description of the drawings

[0023] Figure 1 This is a diagram showing a winding device for a sheet-like member according to an embodiment.

[0024] Figure 2 This is a perspective view showing a rear trunk lid device.

[0025] Figure 3 This is a perspective view showing a rear trunk lid device.

[0026] Figure 4 This is an exploded perspective view showing a rear trunk lid device.

[0027] Figure 5 This is a sectional view taken along line V-V in Figure 3 Herein.

[0028] Figure 6 This is an exploded plan view showing a first rotating support member, a sliding member, and a spiral spring.

[0029] Figure 7 This is a diagram showing a state where a hook is assembled to a hook support portion.

[0030] Figure 8 This is a diagram showing a state where a hook is assembled to a hook support portion.

[0031] Figure 9 This is a diagram showing a state where a hook is assembled to a hook support portion.

[0032] Figure 10 This is a diagram showing a state where a hook is assembled to a hook support portion.

[0033] Figure 11 This is a perspective view showing a modified example of a hook support portion. DETAILED DESCRIPTION

[0034] Hereinafter, a winding device for a sheet-like member according to an embodiment will be described. The winding device is a device configured to wind a sheet-like member in a vehicle.

[0035] <Application Example>

[0036] An application example of the winding device will be described. Figure 1It is a view showing a state where a winding device is applied to a vehicle 10. In the present embodiment, an example in which the winding device is a rear hatch device 20 will be described. The rear hatch device 20 is provided in the vehicle 10, and the vehicle 10 is provided with a luggage compartment 11 at the rear side. The luggage compartment 11 extends behind the backrest portion 17 of the seat 16. The seat 16 is, for example, a rear seat in the second row or the third row from the front among the seats provided in the vehicle. The luggage compartment 11 is located between two side walls 13 behind the backrest portion 17 on the floor 12. Windows 13w are provided in the side walls 13. A roof 14 is provided above the luggage compartment 11. The rear side of the luggage compartment 11 is open, and the opening is opened and closed by a rear door 15.

[0037] As described above, the rear hatch device 20 is incorporated in the luggage compartment 11. The rear hatch device 20 is provided at a position where an article placed on the floor 12 of the luggage compartment 11 is covered from above. For example, the rear hatch device 20 is provided to extend in the horizontal direction at a position above the floor 12 and below the window 13w.

[0038] In Figure 1 In the illustrated example, each of the two side walls 13 includes a first recess 18 and a second recess 19. The first recess 18 is formed on the wall 13 above and behind the backrest portion 17. The second recess 19 is provided at a position spaced rearward from the first recess 18. The first recess 18 and the second recess 19 are formed in a concave shape that opens upward and toward the center in the vehicle width direction.

[0039] In a state where the winding support device 30 of the rear hatch device 20 extends in the vehicle width direction, both ends of the winding support device 30 are held by a pair of first recesses 18. The rear hatch 22 is pulled out from the winding support device 30, and both ends of a bracket 28 provided at the end of a sheet-like portion 23 of the rear hatch 22 are held by a pair of second recesses 19. Therefore, the rear hatch 22 is pulled out rearward from the winding support device 30 and held in a state of covering the luggage compartment 11 from above. The winding support device 30 is configured to wind the rear hatch 22 that covers the luggage compartment 11 from above. When the rear hatch 22 is wound by the winding support device 30, a storage space that continuously expands in the vertical direction is formed in the luggage compartment 11.

[0040] The sheet-like member that is the winding target of the winding support device 30 is a thin member that can be deformed to wind around the winding shaft 32 and can be extended in a plane. In the present embodiment, part or all of the rear trunk lid 22 is the sheet-like member. The winding target of the winding support device 30 is not necessarily the rear trunk lid 22. For example, the winding support device can be a device configured to wind a light-shielding curtain for covering a side window or a rear window of a vehicle. In this case, the winding support device can be provided along the lower edge or the side edge of the side window or the lower edge of the rear window. That is, the winding device can be a device configured to wind a light-shielding curtain.

[0041] <Overall structure>

[0042] The overall structure of the rear trunk lid device 20 will be described. Figure 2 and Figure 3 are perspective views showing the rear trunk lid device 20, respectively. Figure 2 shows the state in which the rear trunk lid 22 is deployed, and Figure 3 shows the state in which the rear trunk lid 22 is stored. Figure 4 is an exploded perspective view showing the rear trunk lid device 20. Figure 5 is along Figure 3 The cross-sectional view taken along the line V-V in.

[0043] The rear trunk lid device 20 includes a rear trunk lid 22 and a winding support device 30. The rear trunk lid 22 is a member configured to cover the luggage compartment 11. The winding support device 30 is a device configured to wind the rear trunk lid 22 so that the rear trunk lid 22 can be pulled out from the winding support device 30.

[0044] The rear trunk lid 22 includes a sheet-like portion 23 that is configured to be deployed into a planar shape and can be deformed to be wound. The sheet-like portion 23 is formed of a resin sheet or a flexible sheet made of a cloth woven from yarns, etc. The sheet-like portion 23 is a portion corresponding to the sheet-like member wound by the winding support device 30.

[0045] The proximal end of the sheet-like portion 23 is connected to the winding support device 30. The bracket 28 is fixed to the end of the sheet-like portion 23 in the vehicle width direction. Both ends of the bracket 28 project outward from the sheet-like portion 23 in the vehicle width direction. Both ends of the bracket 28 are assembled and held in the corresponding second recesses 19 described above.

[0046] The rear trunk lid 22 includes a plate-like portion 24 having a higher rigidity than the sheet-like portion 23. The plate-like portion 24 is provided on the pull-out side of the bracket 28. The plate-like portion 24 is formed, for example, by a structure in which a resin plate, a metal plate, or a wooden plate is laminated on a flexible sheet material.

[0047] While both ends of the support 28 are held by a pair of second recesses 19 respectively, the sheet-like portion 23 is pulled in the front-rear direction between the winding support device 30 and the support 28 so that the sheet-like portion 23 is held in a state where the sheet-like portion 23 is unfolded in a horizontal state. The plate-like portion 24 is held in a state where the plate-like portion 24 extends in a horizontal state from the support 28 toward the rear side of the vehicle 10 by its own rigidity. The state where both ends of the support 28 are held by a pair of second recesses 19 respectively and the sheet-like portion 23 is pulled out from the winding support device 30 is called the "unfolding reference state". The above plate-like portion 24 can be omitted, and the sheet-like portion 23 can be pulled out by the user holding the plate-like portion 24 or the support 28 by hand.

[0048] The winding support device 30 includes a winding shaft 32, a housing 40, a spiral spring 50, and a sliding member 60. The winding shaft 32 is rotatably supported by the housing 40. The winding shaft 32 is biased in the winding direction by the spiral spring 50, the sliding member 60, etc.

[0049] The winding shaft 32 is a hollow elongated member. The winding shaft 32 includes, for example, a cylindrical member made of metal or the like. The base end of the sheet-like portion 23 is attached to the outer peripheral surface of the winding shaft 32 along the longitudinal direction of the winding shaft 32. Therefore, when the winding shaft 32 rotates in the direction of winding the sheet-like portion 23, the sheet-like portion 23 is wound around the winding shaft 32.

[0050] The housing 40 includes a housing main body 41, a first rotation support member 43, and a second rotation support member 46. The housing 40 is configured to store the sheet-like portion 23.

[0051] The housing main body 41 is formed in a tubular shape that is configured to accommodate the winding shaft 32 and the sheet-like portion 23 wound around the winding shaft 32. In the housing main body 41, a sheet-like portion opening 42 is formed along the length direction of the housing main body 41, and the sheet-like portion 23 can be pulled out and wound through the sheet-like portion opening 42. The housing main body 41 is made of, for example, a metal such as aluminum or a resin.

[0052] The first rotary support member 43 is attached to one end of the housing main body 41. The first rotary support member 43 is configured to support one end of the winding shaft 32 so as to rotate relative to the first rotary support member 43. The first rotary support member 43 includes a support body 44 and a first support portion 45. The support body 44 is fitted into the opening on one end side of the housing main body 41 so as to be attached at a fixed position on one end of the housing main body 41. For example, in a state where the support body 44 is fitted into the opening on one end side of the housing main body 41, a screw S is screwed and fastened to the housing main body 41, and its end is fitted into the fixing hole of the support body 44, whereby the support body 44 is fixed to one end of the housing main body 41 in a held state. The first support portion 45 projects from the surface of the support body 44 facing the center in the longitudinal direction of the housing main body 41. The first support portion 45 is formed in a columnar shape that projects toward the center in the longitudinal direction of the housing main body 41 along the longitudinal direction of the housing main body 41. The first rotary support member 43 is, for example, a molded part made of resin.

[0053] The second rotary support member 46 is attached to the other end of the housing main body 41. The second rotary support member 46 is configured to support the other end of the winding shaft 32 so as to rotate relative to the second rotary support member 46. The second rotary support member 46 includes a support body 47 and a second support portion 48. The support body 47 is fitted into the opening on the other end side of the housing main body 41 so as to be attached at a fixed position on the other end of the housing main body 41. For example, in a state where the support body 47 is fitted into the opening on the other end side of the housing main body 41, a screw S is screwed and fastened to the housing main body 41, and its end is fitted into the fixing hole of the support body 47, whereby the support body 47 is fixed to the other end of the housing main body 41 in a held state. The second support portion 48 projects from the surface of the support body 47 facing the center in the longitudinal direction of the housing main body 41. The second support portion 48 is formed in a tapered shape that projects toward the center in the longitudinal direction of the housing main body 41 along the longitudinal direction of the housing main body 41. The second rotary support member 46 is, for example, a molded part made of resin.

[0054] In a state where the winding shaft 32 is provided in the housing main body 41, one end of the winding shaft 32 is rotatably supported by the first rotary support member 43 on one end side of the housing main body 41. In addition, in the same state, the other end of the winding shaft 32 is rotatably supported by the second rotary support member 46 on the other end side of the housing main body 41. Therefore, the winding shaft 32 is rotatably supported in the housing main body 41. Regarding the first rotary support member 43 and the second rotary support member 46, the first rotary support member 43 and the second rotary support member 46 are attached to the housing main body 41 so as not to rotate relative to the housing main body and do not rotate when the winding shaft 32 rotates.

[0055] In the present embodiment, the tonneau cover assembly 20 includes a retainer 80 and a retainer biasing member 82 .

[0056] The retainer 80 is a member made of resin or the like, and can be externally attached to the end of the housing 40. More specifically, the retainer 80 is a tubular member with one end open and the other end closed. The retainer 80 is movably attached to the end of the housing 40 along the longitudinal direction of the housing 40 while covering the outer peripheral surface of the end of the housing 40.

[0057] The retainer biasing member 82 is provided between the outward end surface of the housing 40 and the closed end on the deep side in the retainer 80. The retainer biasing member 82 is, for example, a coil spring. When the retainer biasing member 82 attempts to return to the original shape from the compressed state, the retainer 80 is biased outward in the longitudinal direction of the housing 40 by the elastic force of the retainer biasing member 82.

[0058] The holder biasing member 82 is compressed in a state where the respective holders 80 at both ends of the winding support device 30 are supported by the pair of first recesses 18. In this case, the outward surface of the holder 80 presses the first recesses 18 by the elastic force of the holder biasing member 82. Therefore, the rattling sound of the winding support device 30 in the first recesses 18 is prevented.

[0059] The respective retainers 80 and retainer biasing members 82 may be provided at both ends of the housing 40 , may be provided at only one end, or may be omitted.

[0060] <Structure for biasing the winding axis in the winding direction>

[0061] Apart from Figures 1 to 5 In addition, further reference will be made to Figure 6 A configuration for biasing the winding shaft 32 in the winding direction is described. Figure 6 is an exploded plan view showing the first rotation support member 43 , the sliding member 60 , and the coil spring 50 .

[0062] like Figure 4 As shown, the winding shaft 32 includes a shaft body 33 which is a hollow shaft. The coil spring 50 and the sliding member 60 are provided inside the shaft body 33. In addition, a fitting groove 34 is formed inside the shaft body 33 in the entire longitudinal direction of the shaft body 33. The fitting groove 34 is formed so that the winding shaft 32 and the sliding member 60 are relatively non-rotatable.

[0063] The coil spring 50 is configured to bias the winding shaft 32 in the winding direction of the sheet-like portion 23. The coil spring 50 is configured to elongate and contract along its own axial direction, and is configured to store force by twisting and deforming in one direction to apply a force in the direction of restoring the twisting deformation. The coil spring 50 includes a coil portion 51, a first attachment portion 52, and a second attachment portion 53. The axial direction of the coil portion 51 is along the longitudinal direction of the winding shaft 32. The coil portion 51 is provided inside the winding shaft 32. The coil portion 51 is configured to elongate and contract along the longitudinal direction of the winding shaft 32. The first attachment portion 52 is continuous with one end of the coil portion 51. The first attachment portion 52 is attached to the first support portion 45 of the first rotary support member 43. The second attachment portion 53 is continuous with the other end of the coil portion 51. The second attachment portion 53 is attached to the support portion 63 of the sliding member 60. In Figure 4 and Figure 5 Although the intermediate portion of the coil portion 51 extending in the axial direction is partially omitted and indicated by a dashed line, the intermediate portion of the coil portion 51 indicated by the dashed line also has a coil shape. This also applies to Figure 6 and the subsequent drawings.

[0064] As Figure 6 shown, the sliding member 60 is configured to engage with the winding shaft 32 so as not to rotate relative to the winding shaft 32 and so as to be slidable along the longitudinal direction of the winding shaft 32. When the winding shaft 32 rotates relative to the housing main body 41, the sliding member 60 rotates together with the winding shaft 32. The sliding member 60 is configured to slide in the winding shaft 32 along the longitudinal direction of the winding shaft 32 when the coil spring 50 elongates and contracts. The sliding member 60 is a member made of resin or metal. The sliding member 60 includes a rotation stopper portion 61 and a support portion 63.

[0065] The rotation stopper portion 61 is a columnar portion configured to be provided in the winding shaft 32. Rotation stopper protrusions 62 configured to be fitted into corresponding fitting grooves 34 are formed on the outer periphery of the rotation stopper portion 61. The rotation stopper protrusions 62 are formed on the outer periphery of the rotation stopper portion 61 corresponding to the fitting grooves 34, are located at the same positions as the fitting grooves 34, and have the same number as the fitting grooves 34. The rotation stopper protrusions 62 are formed in the same shape as the fitting grooves 34. In this case, the rotation stopper protrusions 62 are formed as elongated protrusions having a continuous triangular shape.

[0066] In a state where the rotation stopper protrusions 62 are fitted into the corresponding fitting grooves 34, the sliding member 60 is configured to slide in a state of being rotationally stopped in the winding shaft 32. At least one rotation stopper protrusion 62 and at least one fitting groove 34 are required. Protrusions along the longitudinal direction may be formed in the shaft body. Fitting grooves for fitting the protrusions may be formed on the sliding member side.

[0067] In the present embodiment, a plurality (e.g., 10 to 30) of fitting grooves 34 are formed at intervals along the circumferential direction of the winding shaft 32. Even in the case where a plurality of fitting grooves 34 are formed, in the present embodiment, bearing members 36 are respectively provided at one end and the other end of the winding shaft 32 so as to make the rotation of the winding shaft 32 smooth with respect to the first support portion 45 and the second support portion 48. The bearing member 36 is a tubular member made of resin or the like. The bearing member 36 may be omitted.

[0068] The first support portion 45 and the second support portion 48 are respectively rotatably inserted into the bearing member 36. That is, the bearing member 36 is respectively disposed between the first support portion 45 and the end opening of the winding shaft 32, and between the second support portion 48 and the end opening of the winding shaft 32. When the bearing member 36 rotates with respect to the first support portion 45 and the second support portion 48, the winding shaft 32 rotates with respect to the housing 40.

[0069] The support portion 63 projects toward the first support portion 45 with respect to the rotation stopper portion 61. The support portion 63 is thinner than the rotation stopper portion 61.

[0070] Since the first attachment portion 52 is attached to the first support portion 45, one end of the spiral spring 50 is attached to the first support portion 45 in a rotation-stopped state. Since the second attachment portion 53 is attached to the support portion 63, the other end of the spiral spring 50 is attached to the sliding member 60 in a rotation-stopped state. Therefore, in a state where the spiral spring 50 is disposed inside the winding shaft 32, both ends of the spiral spring 50 are respectively attached to the first support portion 45 and the support portion 63 in a rotation-stopped state. The first support portion 45 rotatably supports the winding shaft 32 without rotating with respect to the housing main body 41. The support portion 63 rotates with respect to the housing main body 41 without rotating with respect to the winding shaft 32. Therefore, when the winding shaft 32 rotates with respect to the housing main body 41, in a state where the first attachment portion 52 stops rotating together with the housing main body 41, the second attachment portion 53 rotates with the winding shaft 32 with respect to the housing main body 41, whereby the coil portion 51 is torsionally deformed. Due to the torsional deformation, the coil portion 51 biases the winding shaft 32 in the winding direction and elongates and contracts in the longitudinal direction of the winding shaft 32.

[0071] More specifically, a restoring force for eliminating the torsional deformation is generated in the torsionally deformed coil portion 51. The restoring force acts on the sliding member 60 and the winding shaft 32 as a torque about the axis of the winding shaft 32. Since the winding shaft 32 and the helical spring 50 are set such that the torsional deformation of the coil portion 51 increases when the winding shaft 32 rotates in the pulling-out direction, the coil portion 51 attempts to rotate the winding shaft 32 in the winding direction to eliminate the torsional deformation. Therefore, the torque biases the winding shaft 32 in the winding direction. The number of turns of the coil portion 51 changes due to the torsional deformation of the coil portion 51. The coil portion 51 elongates in the axial direction when its torsional deformation increases the number of turns, and shortens in the axial direction when its torsional deformation decreases the number of turns.

[0072] Here, the state in which the sheet portion 23 is wound around the winding shaft 32 until the bracket 28 contacts the housing main body 41 around the opening 42 of the sheet portion is referred to as the "storage reference state". In the storage reference state, it is preferable that the coil portion 51 is torsionally deformed between the winding shaft 32 and the first support portion 45, and the coil portion 51 biases the winding shaft 32 in the winding direction of the sheet portion 23 by the restoring force for eliminating the torsional deformation. That is, it is preferable that the coil portion 51 is in a pre-torsionally deformed state such that the winding shaft 32 is biased in the winding direction in a state where the sheet portion 23 is wound around the winding shaft 32.

[0073] In the present embodiment, the relationship between the rotation direction of the winding shaft 32 and the torsional deformation direction of the coil portion 51 is set as follows. That is, when the winding shaft 32 rotates in the pulling-out direction, the coil portion 51 is torsionally deformed to increase the number of turns and elongates in the axial direction. When the winding shaft 32 rotates in the winding direction, the coil portion 51 is torsionally deformed to decrease the number of turns and shortens in the axial direction. Therefore, in the storage reference state, it is preferable that the coil portion 51 is in a pre-torsionally deformed state such that the number of turns is increased compared to the number of turns in the natural state, so that the winding shaft 32 is biased in the winding direction.

[0074] At least one of the first attachment portion 52 and the second attachment portion 53 includes a hook. At least one of the first support portion 45 and the support portion 63 (which is an attachment portion including a hook) includes a hook support portion 70. In the present embodiment, the first attachment portion 52 and the second attachment portion 53 each have a hook, and the first support portion 45 and the support portion 63 each have a hook support portion 70. That is, for both the first group including the first attachment portion 52 and the first support portion 45 and the second group including the second attachment portion 53 and the second support portion 48, an attachment mode using a hook and a hook support portion 70 is adopted. The attachment mode using a hook and a hook support portion 70 may be used only for the first group, or may be used only for the second group among the first group and the second group. The group that does not adopt the attachment mode using a hook and a hook support portion 70 may be attached by, for example, inserting the hook into a fixing hole.

[0075] <Hook and hook support portion>

[0076] Except for Figures 1 to 6 other than, reference will be made to Figures 7 to 10 to describe the hook and the hook support portion 70 in more detail. Figures 7 to 10 are diagrams respectively showing the state where the hook 54 is assembled to the hook support portion 70. Figures 7 to 9 is a perspective view along the same direction. Figure 10 is along Figure 6 a sectional view of the position taken along the line X-X in Figures 7 to 10 shows an example of the hook support portion 70 of the sliding member 60. As long as there is no contradiction, the hook support portion 70 of the first rotation support member 43 may adopt the same structure as the hook support portion 70 of the sliding member 60.

[0077] As Figure 10 shown, the hook 54 extends inwardly with respect to the coil portion 51 and extends in a direction intersecting the axial direction when viewed along the axial direction of the coil portion 51. The hook 54 may be continuous with the end portion of the coil portion 51 or may be connected to the coil portion 51 via a connecting portion extending along the axial direction from the end portion of the coil portion 51. In the present embodiment, the hook 54 is continuous with the end portion of the coil portion 51. In Figure 10 the example shown, the hook 54 extends from the end portion of the coil portion 51 toward the radial center of the coil portion 51. The end of the hook 54 is closer to the center of the coil portion 51 than the outer periphery of the coil portion 51. Here, the end of the hook 54 is substantially located at the center of the coil portion 51.

[0078] In the present embodiment, the hook support portion 70 is formed in a columnar shape extending along the axial direction of the coil portion 51. A groove 71 configured to hold the hook 54 is formed on the outer periphery of the hook support portion 70. The bottom 72 of the groove 71 is located inside with respect to the outer periphery of the hook support portion 70, and the upper opening 73 on the opposite side of the bottom 72 of the groove 71 opens at the outer periphery of the hook support portion 70. The direction in which the groove 71 is recessed (i.e., the direction from the upper opening 73 toward the bottom 72) corresponds to the direction in which the hook 54 extends within the coil portion 51 with respect to the coil portion 51. Here, since the hook 54 extends from the end portion of the coil portion 51 toward the radial center of the coil portion 51, the groove 71 is recessed from the outer periphery of the hook support portion 70 toward the radial center of the hook support portion 70.

[0079] The groove 71 includes an insertion portion 76 and a holding portion 78. The insertion portion 76 has an end opening 77. The end opening 77 is an opening into which the hook 54 is inserted along the axial direction. That is, the groove 71 extends to the end face of the hook support portion 70, and the end opening 77 is formed on this end face. The holding portion 78 is a portion configured to hold the hook 54. In a state where the rear case lid device 20 is assembled, the hook 54 is substantially located in the holding portion 78. The insertion portion 76 and the holding portion 78 are provided at positions separated from each other along the axial direction of the coil portion 51 and separated from each other along the circumferential direction of the coil portion 51. The portion of the groove 71 between the insertion portion 76 and the holding portion 78 is continuous, so that the hook 54 is configured to slide from the end opening 77 to the holding portion 78.

[0080] In the present embodiment, the groove 71 includes a first groove 74 and a second groove 75. The first groove 74 extends parallel to the axial direction from the end opening 77. The second groove 75 extends along the circumferential direction from the end of the first groove 74 opposite to the end opening 77 to the holding portion 78. As Figure 7 shown, the hook 54 moves in the direction of arrow A1 along the axial direction of the coil portion 51 and is inserted into the first groove 74 from the end opening 77. The hook 54 inserted into the first groove 74 continues to move in the direction of arrow A1 and slides along the first groove 74. Accordingly, the hook 54 reaches the end of the first groove 74 opposite to the end opening 77. Thereafter, as Figure 8 shown, the hook 54 moves in the direction of arrow A2 along the circumferential direction of the coil portion 51 and is inserted into the second groove 75 and slides along the second groove 75. Accordingly, as Figure 9 shown, the hook 54 reaches the end of the second groove 75 opposite to the first groove 74 and is held by the holding portion 78.

[0081] As Figure 10 shown, the hook 54 bends from the end of the coil portion 51 toward the radial center of the coil portion 51. The end of the hook 54 extends along the radial direction of the coil portion 51. The base end of the hook 54 bends from a state of extending along the tangential direction of the coil portion 51 toward a state of extending along the radial direction. According to the curvature of the base end of the hook 54, the height dimension from the bottom 72 of the groove 71 in one side wall 74a is smaller than the height dimension of the other side wall 74b of the first groove 74.

[0082] As Figure 10 shown by the solid line in, in a state where the hook 54 is located in the first groove 74, the second groove 75 is formed on the side where the bent portion of the base end of the hook 54 is positioned with respect to the first groove 74. In this state, when the spiral spring 50 rotates in the direction of arrow A2, the hook 54 slides along the second groove 75 and is held by the holding portion 78. As shown by Figure 10As shown by the dashed line in the figure, when the hook 54 is held by the holding portion 78, the end wall 75a at the end of the second groove 75 is sandwiched between the hook 54 and the coil portion 51.

[0083] In a state where the hook 54 continuous with the end of the coil portion 51 is located in the holding portion 78, the portion of the hook support portion 70 on the insertion portion 76 side with respect to the holding portion 78 is located inside the coil portion 51. In the present embodiment, when the hook 54 inserted into the groove 71 from the end opening 77 slides along the groove 71 in the direction of arrow A1 toward the holding portion 78, the hook support portion 70 is inserted into the coil portion 51 from the end. That is, the hook support portion 70 in a part of the first groove 74 through which the hook 54 has passed is inserted into the coil portion 51.

[0084] As described above, a restoring force is generated in the circumferential direction in the coil portion 51 to bias the winding shaft 32 in the winding direction. The hook 54 is biased in the circumferential direction from the insertion portion 76 toward the holding portion 78 by the restoring force of the coil portion 51. In the present embodiment, in any one of the storage reference state, the deployment reference state, and the states therebetween, the spiral spring 50 biases the winding shaft 32 in the winding direction, and the coil portion 51 is torsionally deformed to increase the number of turns. Therefore, the coil portion 51 attempts to recover in the direction of decreasing the number of turns. Figure 10 The direction of arrow A2 in the figure is the direction in which the number of turns of the coil portion 51 decreases when the coil portion 51 is twisted in the direction of arrow A2. In any one of the storage reference state, the deployment reference state, and the states therebetween, the coil portion 51 is torsionally deformed in the direction opposite to the direction of arrow A2. Therefore, a torque in the direction of arrow A2 is generated in the hook 54 by the restoring force of the coil portion 51, and the torque biases the hook 54 toward the end wall 75a of the second groove 75. Therefore, when the hook 54 is located in the holding portion 78, the hook 54 is prevented from sliding along the second groove 75 toward the first groove 74.

[0085] As Figure 6 shown, the second groove 75 of the first support portion 45 and the second groove 75 of the support portion 63 are formed to face each other with respect to the first groove 74. Specifically, in Figure 6In the illustrated example, the second groove 75 of the first support portion 45 extends upward from the first groove 74 in the figure, and the second groove 75 of the hook support portion 70 of the support portion 63 extends downward from the first groove 74 in the figure. Accordingly, each of the hooks 54 on both sides of the coil portion 51 is biased by the restoring force of the coil portion 51 in a direction opposite to the direction in which the hook 54 comes out of the holding portion 78 in the circumferential direction. Further, with the hooks 54 at both ends of the spiral spring 50 held by the second groove 75 of the first support portion 45 and the second groove 75 of the support portion 63, respectively, torsional deformation can be easily applied to the coil portion 51 in the storage reference state by relatively rotating the first rotary support member 43 and the sliding member 60 in opposite directions to each other. Refer to Figure 10 , in the state of the hook 54 indicated by the dashed line in Figure 10 , when the sliding member 60 rotates in a direction opposite to the direction of arrow A2, a torque in the direction opposite to the direction of arrow A2 is applied to the hook 54 from the end wall 75a, and torsional deformation in the storage reference state can be applied to the coil portion 51 by the torque.

[0086] In a state where the movement of the bracket 28 is restricted to be in the storage reference state or the deployment reference state, the biasing force in the winding direction is supported by the bracket 28, and the rotation of the winding shaft 32 and the sliding member 60 is restricted. At this time, even when the hook 54 receives a torque in the direction of arrow A2 and pushes the end wall 75a of the sliding member 60 in the direction of arrow A2, the end wall 75a supports the hook 54 and the sliding member 60 does not rotate. When the restriction on the movement of the bracket 28 is released, the restriction on the rotation of the winding shaft 32 and the sliding member 60 is also released. At this time, the hook 54 receives a torque in the direction of arrow A2 and pushes the end wall 75a of the sliding member 60, so that the sliding member 60 and the winding shaft 32 rotate in the winding direction.

[0087] The holding portion 78 includes an engaging protrusion portion 79. The engaging protrusion portion 79 is configured to engage with the hook 54 along the circumferential direction to maintain the holding state of the hook 54. The engaging protrusion portion 79 protrudes from the side wall of the second groove 75 toward the second groove 75. The width dimension of the second groove 75 at the portion where the engaging protrusion portion 79 is formed is smaller than the width dimensions of the second groove 75 at the front and rear of the engaging protrusion portion 79 and the width dimension of the diameter of the hook 54. When sliding along the second groove 75, the hook 54 comes into contact with the engaging protrusion portion 79. At this time, at least one of the hook 54 and the hook support portion 70 elastically deforms so that the hook 54 can pass through the engaging protrusion portion 79 and be stored in the holding portion 78. After the hook 54 passes through the engaging protrusion portion 79, the elastically deformed portion recovers. Accordingly, when the hook 54 stored in the holding portion 78 attempts to slide in the second groove 75 toward the first groove 74, the hook 54 comes into contact with the engaging protrusion portion 79, thereby being restricted from sliding. Accordingly, the hook 54 is held in the state where the hook 54 is stored in the holding portion 78.

[0088] The engaging projection 79 is formed to be away from the end wall 75a of the second groove 75. Here, the engaging projection 79 is formed to project from an end portion that is a part of the side wall 74a forming the first groove 74 into the second groove 75. The space on the end wall 75a side of the engaging projection 79 is a storage space for the hook 54 in the holding portion 78. The storage space can be smaller than the hook 54, and the hook 54 can be press-fitted into the storage space. In this case, the frictional force between the hook 54 and the holding portion 78 increases, and the hook 54 is less likely to rattle in the storage space and is less likely to come out of the upper opening 73 of the groove 71.

[0089] The portion of the engaging projection 79 on the first groove 74 side in the circumferential direction is an inclined surface. The inclined surface is inclined with respect to a plane perpendicular to the axial direction of the coil portion 51. By forming the inclined surface, the width dimension of the second groove 75 at the portion where the engaging projection 79 is formed gradually increases from the first groove 74 side toward the second groove 75 side. The inclined surface is a guiding surface that can guide the hook 54 toward the holding portion 78.

[0090] The rubber tube 66 is externally mounted on the spiral spring 50. Since the rubber tube 66 is interposed between the spiral spring 50 and the winding shaft 32, rattling due to contact between the spiral spring 50 and the winding shaft 32 is prevented. The rubber tube 66 can be set to rotate together with the winding shaft 32 and the sliding member 60, or can be set relative to the winding shaft 32 in a relatively non-rotatable manner together with the first rotation support member 43.

[0091] As Figure 6 shown, in the support portion 63, a connecting portion having a diameter larger than the diameter of the hook support portion 70 and smaller than the diameter of the rotation stopper portion 61 is provided between the hook support portion 70 and the rotation stopper portion 61. The connecting portion includes a continuous portion having a constant diameter. The diameter of the connecting portion can be substantially the same as the outer diameter of the spiral spring 50. The connecting portion can be covered by an end portion of the rubber tube 66. Similarly, in the first support portion 45, a connecting portion having a diameter larger than the diameter of the hook support portion 70 and smaller than the diameter of the main body of the first support portion 45 (the portion covered by the bearing member 36) is provided between the hook support portion 70 and the main body of the first support portion 45. The diameter of the connecting portion of the first support portion 45 gradually increases from the hook support portion 70 toward the main body of the first support portion 45. The diameter of a part of the connecting portion of the first support portion 45 on the main body side is larger than the diameter of the connecting portion of the support portion 63.

[0092] <Effects, etc.>

[0093] In the rear trunk lid device 20 configured as described above, the hook 54 of the coil spring 50 is inserted into the groove 71 of the hook support portion 70 from the end opening 77 of the insertion portion 76 along the axial direction, and slides along the groove 71 to the holding portion 78 to be assembled to the hook support portion 70. Therefore, the operation of bending the hook 54 outward from the hook support portion 70 can be omitted, and the end of the coil spring 50 can be easily assembled.

[0094] The hook 54 is biased from the insertion portion 76 toward the holding portion 78 in the circumferential direction by the restoring force of the coil portion 51. Therefore, by using the restoring force for biasing the winding shaft 32, the movement of the hook 54 along the groove 71 from the holding portion 78 toward the insertion portion 76 is prevented, and the position of the hook 54 in the holding portion 78 is easily maintained constant.

[0095] In addition, the holding portion 78 has an engaging projection portion 79 which is configured to engage with the hook 54 in the circumferential direction to maintain the holding state of the hook 54. Therefore, the movement of the hook 54 along the groove 71 from the holding portion 78 toward the insertion portion 76 is prevented by the engaging projection portion 79, and the position of the hook 54 in the holding portion 78 is easily maintained constant. Since the engaging projection portion 79 engages with the hook 54 in the circumferential direction, the coil spring 50 including the hook 54 and the first support portion 45 or the support portion 63 having the engaging projection portion 79 can be engaged with each other by relative rotation. Therefore, even when the engaging projection portion 79 is formed, the end of the coil spring 50 can be easily assembled. In addition, the operator can easily grasp that the assembly of the end of the coil spring 50 has been completed by feeling that the hook 54 has passed over the engaging projection portion 79.

[0096] In addition, even in a state where no restoring force is generated in the coil spring 50, the engaging protrusion 79 can restrict the movement of the hook 54 along the groove 71 from the holding portion 78 toward the insertion portion 76. Therefore, during the assembly operation of the rear lid device 20, even in a state where no restoring force is generated in the coil spring 50, the coil spring 50, the sliding member 60, and the first rotary support member 43 can be easily manipulated integrally, and contribute to the assembly operation of the rear lid device 20. Specifically, during the assembly operation of the rear lid device 20, with the hook 54 of the second attachment portion 53 assembled to the holding portion 78 of the sliding member 60, the sliding member 60 and the coil spring 50 are inserted into the winding shaft 32 from the end opening 77 of the winding shaft 32. At this time, in order to insert the sliding member 60 into the winding shaft 32 in a state where a restoring force is generated in the coil spring 50, it is necessary to perform the operation with the coil spring 50 twisted, which is troublesome. On the other hand, when the sliding member 60 is inserted into the winding shaft 32 in a state where no restoring force is generated in the coil spring 50, it is difficult to restrict the movement of the hook 54 along the groove 71 from the holding portion 78 toward the insertion portion 76 by the restoring force. Even in such a case, since the movement of the hook 54 along the groove 71 from the holding portion 78 toward the insertion portion 76 can be restricted by the engaging protrusion 79, the sliding member 60 and the coil spring 50 can be easily inserted into the winding shaft 32.

[0097] The groove 71 includes a first groove 74 and a second groove 75. The first groove 74 extends from the end opening 77 parallel to the axial direction of the coil spring 50, and the second groove 75 extends in the circumferential direction from the end of the first groove 74 opposite to the end opening 77 to the holding portion 78. Therefore, the hook 54 of the coil spring 50 is inserted from the end opening 77 of the insertion portion 76 in the axial direction, slides in the axial direction of the coil spring 50 along the first groove 74, and then slides in the circumferential direction along the second groove 75 for assembly. At this time, since the wall of the second groove 75 can firmly receive the force applied to the hook support portion 70 from the hook 54 in the axial direction when the coil spring 50 expands and contracts in the axial direction, the hook 54 is less likely to come out of the holding portion 78.

[0098] The hook 54 is continuous with the end of the coil portion 51, and the portion of the hook support portion 70 on the insertion portion 76 relative to the holding portion 78 is located inside the coil portion 51. Therefore, during the sliding of the hook 54 along the groove 71 and during the holding of the hook 54 by the holding portion 78, when the hook 54 attempts to come out of the upper opening 73 of the groove 71, the portion of the hook support portion 70 on the end side interferes with the coil portion 51, thereby preventing the hook 54 from coming out.

[0099] Here, as in Patent Document 1, when the leg end of the helical spring is deformed to bend outward in the radial direction and assembled, when the coupling portion extending in the axial direction is interposed between the end of the coil portion and the leg end, the leg end is liable to be deformed to bend outward in the radial direction. On the contrary, in the case where the hook 54 slides along the groove 71 from the end opening 77 of the insertion portion 76 and is assembled as in the present disclosure, by making the hook 54 continuous with the end of the coil portion 51, even when the hook 54 attempts to escape from the upper opening 73 of the groove 71 while the hook 54 slides along the groove 71, the end of the hook support portion 70 interferes with the coil portion 51, thereby preventing the hook 54 from escaping and facilitating the sliding. Further, when the engaging protrusion portion 79 is formed in the second groove 75, when the hook 54 passes over the engaging protrusion portion 79, the hook 54 receives a force from the engaging protrusion portion 79. Even in this case, since there is no coupling portion extending in the axial direction between the hook 54 and the coil portion 51, the attachment portion including the hook 54 is less likely to be deformed in an unexpected direction due to the force received from the engaging protrusion portion 79.

[0100] Further, as in Patent Document 1, in the case of a configuration in which the end of the helical spring 50 is assembled by inserting the leg of the helical spring into the coupling hole, when there is a gap between the leg and the coupling hole, during the operation of the helical spring 50, the leg may rise in the direction of coming out of the coupling hole. When the leg comes out of the coupling hole, the leg and the inner surface of the winding shaft 32 may come into contact with each other to generate abnormal noise. To prevent this, if the dimensions of the leg and the coupling hole are designed such that the leg and the coupling hole strongly interfere with each other so that there is no gap between the leg and the coupling hole, when the leg is inserted into the coupling hole, it is necessary to strongly push the leg with pliers or the like, and the assembly operation becomes difficult. On the contrary, in the present disclosure, since the portion of the hook support portion 70 on the insertion portion side with respect to the holding portion 78 is located inside the coil portion 51, the hook 54 is prevented from escaping from the upper opening 73 of the groove 71. Therefore, the operation of pushing the hook 54 into the hole with pliers or the like can be omitted, and the assembly operation for the end of the helical spring 50 is facilitated.

[0101] <Note>

[0102] Figure 11 is a perspective view showing a modified example of the hook support portion 70.

[0103] Although the groove 71 of the hook support portion 70 has been described as having the first groove 74 and the second groove 75, this is not a necessary configuration. As in Figure 11In the illustrated example, the groove 171 of the hook support portion 170 may be formed to extend in a spiral shape on the outer periphery of the hook support portion 170. In this case, the operator can move the hook 54 from the insertion portion 76 to the holding portion 78 by rotating the hook support portion 170 about the axis while inserting the hook support portion 170 into the coil portion 51 in the axial direction. That is, the operator can move the hook 54 from the insertion portion 76 to the holding portion 78 by relatively rotating the helical spring 50 and the hook support portion 170 in a spiral shape along the direction of the arrow A3 in Figure 11 .

[0104] The configurations and variations described in the above embodiments can be appropriately combined as long as the configurations do not contradict each other.

[0105] The present specification and the drawings disclose the following aspects.

[0106] A first aspect is a winding device for a sheet member. The winding device includes: a sheet member; a winding shaft, one end of the sheet member being attached to the winding shaft, the winding shaft being a hollow shaft; a housing configured to accommodate the sheet member, the housing including a first rotary support member and a second rotary support member, the first rotary support member including a first support portion configured to support one end of the winding shaft for rotation relative to the first rotary support member, and the second rotary support member including a second support portion configured to support the other end of the winding shaft for rotation relative to the second rotary support member; a sliding member disposed inside the winding shaft, the sliding member being configured to engage with the winding shaft so as not to rotate relative to the winding shaft and so as to slide along the longitudinal direction of the winding shaft; and a helical spring disposed inside the winding shaft and configured to bias the winding shaft in the winding direction of the sheet member, the helical spring including a coil portion, a first attachment portion, and a second attachment portion, the coil portion being configured to elongate and contract along the longitudinal direction, the first attachment portion being continuous with one end of the coil portion and attached to the first support portion, and the second attachment portion being continuous with the other end of the coil portion and attached to a support portion formed on the sliding member, wherein at least one of the first attachment portion and the second attachment portion includes a hook that extends inward in a direction intersecting the axial direction of the coil portion relative to the coil portion when viewed in the axial direction of the coil portion, and at least one of the first support portion and the support portion includes a hook support portion in which a groove is formed that is configured to hold the hook, the groove including an insertion portion and a holding portion, the hook being configured to be inserted into the insertion portion along the axial direction, the holding portion being configured to hold the hook, the insertion portion and the holding portion being disposed at positions separated from each other along the axial direction of the coil portion and separated from each other along the circumferential direction of the coil portion, and a portion of the groove between the insertion portion and the holding portion being continuous such that the hook is configured to slide from the insertion portion to the holding portion.

[0107] According to the winding device, the hook of the helical spring is inserted into the groove of the hook support portion along the axial direction from the opening of the insertion portion and slides along the groove to the holding portion to be assembled to the hook support portion. Therefore, the operation of bending the hook outward from the hook support portion can be omitted, and the end portion of the helical spring can be easily assembled.

[0108] A second aspect is the winding device for a sheet member according to the first aspect, wherein a restoring force is generated in the coil portion along the circumferential direction of the coil portion to bias the winding shaft in the winding direction of the sheet member, and the hook is biased in the circumferential direction from the insertion portion toward the holding portion by the restoring force.

[0109] Therefore, by using the restoring force for biasing the winding shaft, the movement of the hook along the groove from the holding portion toward the insertion portion is prevented, and the position of the hook in the holding portion is easily kept constant.

[0110] A third aspect is the winding device for a sheet member according to the first or second aspect, wherein the holding portion includes an engaging protrusion portion configured to engage with the hook in the circumferential direction to maintain the holding state of the hook.

[0111] Therefore, the movement of the hook along the groove from the holding portion toward the insertion portion is prevented by the engaging protrusion portion, and the position of the hook in the holding portion is easily kept constant. Since the engaging protrusion portion engages with the hook in the circumferential direction, the spiral spring and the first support portion or the support portion can be engaged with each other by relative rotation. Therefore, even when the engaging protrusion portion is formed, the end of the spiral spring can be easily assembled. In addition, the operator can easily grasp that the assembly of the end of the spiral spring has been completed by feeling that the hook has passed over the engaging protrusion portion.

[0112] A fourth aspect is the winding device for a sheet member according to any one of the first to third aspects, wherein the groove includes a first groove and a second groove, the first groove extends parallel to the axial direction from the insertion portion, and the second groove extends along the circumferential direction from the end of the first groove opposite to the insertion portion to the holding portion.

[0113] Therefore, the hook of the spiral spring is inserted from the opening of the insertion portion along the axial direction, slides along the first groove in the axial direction, and then slides along the second groove in the circumferential direction for assembly. At this time, since the wall of the second groove can firmly receive the force applied to the hook support portion from the hook along the axial direction when the spiral spring elongates and contracts along the axial direction, the hook is less likely to come out of the holding portion.

[0114] A fifth aspect is the winding device for a sheet member according to any one of the first to fourth aspects, wherein the hook is continuous with one end of the coil portion, and a part of the hook support portion is located inside the coil portion, and this part is closer to the insertion portion than the holding portion.

[0115] Therefore, during the sliding of the hook along the groove and during the holding of the hook by the holding portion, when the hook attempts to come out of the upper opening of the groove, the end of the hook support portion interferes with the coil portion, thereby preventing the hook from coming out.

[0116] The above description is illustrative in all respects, and the present invention is not limited thereto. It should be understood that many variations not shown can be designed without departing from the scope of the present invention.

[0117] This application is based on Japanese Patent Application No. 2022-180065 filed on November 10, 2022, and the content of this Japanese patent application is incorporated herein by reference.

Claims

1. A winding device for a sheet-like member, the winding device comprising: Sheet member; Winding shaft, one end of the sheet member being attached to the winding shaft, the winding shaft being a hollow shaft; Housing, the housing being configured to accommodate the sheet member, the housing including a first rotary support member and a second rotary support member, the first rotary support member including a first support portion configured to support one end of the winding shaft for rotation relative to the first rotary support member, and the second rotary support member including a second support portion configured to support the other end of the winding shaft for rotation relative to the second rotary support member; Sliding member, the sliding member being disposed inside the winding shaft, the sliding member being configured to engage with the winding shaft so as not to rotate relative to the winding shaft and so as to slide along the longitudinal direction of the winding shaft; And Helical spring, the helical spring being disposed inside the winding shaft and configured to bias the winding shaft in the winding direction of the sheet member, the helical spring including a coil portion, a first attachment portion, and a second attachment portion, the coil portion being configured to elongate and contract along the longitudinal direction, the first attachment portion being continuous with one end of the coil portion and attached to the first support portion, and the second attachment portion being continuous with the other end of the coil portion and attached to a support portion formed on the sliding member, wherein at least one of the first attachment portion and the second attachment portion includes a hook, and when viewed in the axial direction of the coil portion, the hook extends inwardly relative to the coil portion in a direction intersecting the axial direction of the coil portion; at least one of the first support portion and the support portion includes a hook support portion, and a groove configured to hold the hook is formed in the hook support portion; the groove includes an insertion portion and a holding portion, the hook being configured to be inserted into the insertion portion along the axial direction, and the holding portion being configured to hold the hook; the insertion portion and the holding portion are disposed at positions separated from each other along the axial direction of the coil portion and separated from each other along the circumferential direction of the coil portion, and a portion of the groove between the insertion portion and the holding portion is continuous such that the hook is configured to slide from the insertion portion to the holding portion.

2. The winding device for a sheet-like member according to claim 1, wherein, A restoring force is generated in the circumferential direction of the coil portion to bias the winding shaft in the winding direction of the sheet member, and the hook is biased from the insertion portion toward the holding portion in the circumferential direction by the restoring force.

3. The winding device for a sheet-like member according to claim 1 or 2, wherein, The holding portion includes an engaging protrusion portion configured to engage with the hook in the circumferential direction to maintain the holding state of the hook.

4. The winding device for a sheet-like member according to claim 1 or 2, wherein, The groove includes a first groove and a second groove, the first groove extending parallel to the axial direction from the insertion portion, and the second groove extending from an end of the first groove opposite to the insertion portion to the holding portion along the circumferential direction.

5. The winding device for a sheet-like member according to claim 1 or 2, wherein, The hook is continuous with one end of the coil portion, and a portion of the hook support portion is located inside the coil portion, the portion being closer to the insertion portion than the holding portion.

Images