JP7328226B2 - Take-up device - Google Patents

Description

The present invention relates to a winding device installed in an automobile or the like.

A luggage compartment of an automobile is sometimes provided with a tonneau cover device for covering the upper part of the luggage compartment with a flexible tonneau cover (sheet-like member). Vehicle doors and the like are sometimes provided with sunshade devices to block direct sunlight with flexible sunshades (sheet-like members) for glare prevention, and to ensure privacy inside the vehicle with sunshades. be. A winding device such as a tonneau cover device or a sunshade device includes, for example, a cylindrical winding shaft member to which one end of the sheet-shaped member is fixed, a spring for biasing the winding shaft member in the direction in which the sheet-shaped member is wound, It has a case having an outlet for the sheet-shaped member, and the like. Thereby, the sheet-like member can be pulled out from the case when in use, and the sheet-like member can be wound up and stored in the case when not in use.

The tonneau cover device disclosed in Japanese Patent Application Laid-Open No. 2016-102000 includes a cylindrical winding shaft member having an inner peripheral portion formed with a groove along the axial direction, and a winding shaft member capable of winding on the outer peripheral surface of the winding shaft member. It includes a sheet-like member, end members attached to both ends of the take-up shaft member, and the like. The end member has a ridge inserted into the groove formed on the outer peripheral portion thereof, and has an insertion portion that is fitted into the opening of the end portion of the winding shaft member. It is rotatably supported as The protrusion of the fitting portion has a top surface and a pair of side portions sandwiching the top surface. The groove of the take-up shaft member has an inner portion facing the side portion of the protrusion of the fitting portion. At least one of the pair of side portions has a protruding portion that protrudes toward the opposing inner portion and hits the inner portion.

Japanese Unexamined Patent Application Publication No. 2016-102000

When the fitting portion of the end member is press-fitted into the opening of the end portion of the winding shaft member, there is a possibility that the convex portion provided on the protrusion of the fitting portion may hit the end portion of the winding shaft member and be scraped off. If scraps (also called scraps) are generated by scraping the convex portion, there is a possibility that the scraps will be caught between the winding shaft member and the end member, causing the end member to shift slightly obliquely with respect to the winding shaft member. occur. If the end member is obliquely displaced from the take-up shaft member, the smoothness of rotation of the take-up shaft member and the end member decreases when the sheet-shaped member is pulled out or wound up, and the sheet-shaped member is operated. There is a possibility that an abnormal noise may be generated at times, and a possibility that an abnormal noise may be generated while the vehicle is running.
The above-described problem also exists in a winding device other than a tonneau cover device, such as a sunshade device.

The present invention discloses a winding device capable of improving the operability of a sheet-shaped member.

The winding device of the present invention comprises a cylindrical winding shaft member,
An insertion portion that is fitted into an opening at the end of the winding shaft member, and an end portion of the winding shaft member at a position outside the end of the winding shaft member in the rotation axis direction of the winding shaft member. an end member having a regulating portion in contact with and supported by a support portion so as to be rotatable about the rotation axis of the winding shaft member;
A concave portion is provided between the end portion of the winding shaft member and the restricting portion, the concave portion being concave toward the rotating shaft and having a bottom portion connected to the outer peripheral portion of the fitting portion ,
The restricting portion has a contact portion contacting the end portion of the winding shaft member on each of both sides of the concave portion in the direction of rotation about the rotation shaft.
Further, the winding device of the present invention includes a cylindrical winding shaft member,
An insertion portion that is fitted into an opening at the end of the winding shaft member, and an end portion of the winding shaft member at a position outside the end of the winding shaft member in the rotation axis direction of the winding shaft member. an end member having a regulating portion in contact with and supported by a support portion so as to be rotatable about the rotation axis of the winding shaft member;
A concave portion is provided between the end portion of the winding shaft member and the restricting portion, the concave portion being concave toward the rotating shaft and having a bottom portion connected to the outer peripheral portion of the fitting portion,
The winding shaft member has a groove along the direction of the rotating shaft on its inner periphery,
The fitting portion has a protrusion inserted into the groove on its outer peripheral portion,
the protrusion of the fitting portion has a convex portion that protrudes toward the facing surface of the groove of the take-up shaft member and contacts the facing surface;
The said recessed part has a form which exists in the position which faced the said rotating shaft direction from the said convex part.

ADVANTAGE OF THE INVENTION According to this invention, the winding device which can improve the operability of a sheet-like member can be provided.

FIG. 1 is a perspective view showing an example of a winding device mounted on an automobile. FIG. 2 is a diagram showing a partially exploded example of the winding device. FIG. 3 is a perspective view showing an example of the end portion of the winding device, omitting illustration of the sheet member and seeing through the case member. FIG. 4 is an exploded perspective view illustrating a winding shaft member, an end member, a shaft member, and a plate member; FIG. 5 is an exploded perspective view illustrating the end member and the take-up shaft member from another angle; FIG. 6 is a side view showing an example of a take-up shaft member; FIG. 7 is a perspective view showing an example of an end member; FIG. 8 is a side view showing an example of an end member; FIG. 9 is a diagram showing an example of the positional relationship between the end member and the winding shaft member; FIG. 10 is a front view showing an example of an end member; FIG. 11 is a cross-sectional view showing an example of a vertical cross section of the winding shaft member and the end member at a position passing through the top convex portion; 12A and 12B are diagrams schematically showing examples in which angles θ1, θ2, and θ3 between top surface convex portions are changed. FIG. 13 is an exploded perspective view illustrating an end member and a winding shaft member in another winding device; FIG. 14 is an exploded perspective view illustrating an end member and a winding shaft member in another winding device;

Embodiments of the present invention will be described below. Of course, the following embodiments are merely illustrative of the present invention, and not all features shown in the embodiments are essential to the solution of the invention.

(1) Overview of technology included in the present invention:
First, an overview of the technology involved in the present invention will be provided with reference to the examples shown in FIGS. 1-14. It should be noted that the figures of the present application are diagrams schematically showing examples, and the magnification in each direction shown in these figures may differ, and each figure may not match. Of course, each element of the present technology is not limited to specific examples indicated by reference numerals.
Further, in the present application, the numerical range "Min to Max" means the minimum value Min or more and the maximum value Max or less.

[Aspect 1]
The winding device 1 includes a cylindrical winding shaft member 10 and an end member 30 as basic elements. The end member 30 includes an insertion portion 31 that is fitted into the opening 12 of the end portion 11 of the winding shaft member 10 , and a rotation shaft direction of the winding shaft member 10 from the end portion 11 of the winding shaft member 10 . It has a regulating portion 32 in contact with the end portion 11 of the winding shaft member 10 at a position on the outer side (outside D1o in the rotation axis direction) of D1, and rotates the rotation axis AX1 of the winding shaft member 10 with respect to the support portion 60. It is rotatably supported as a center. Between the end portion 11 of the take-up shaft member 10 and the restricting portion 32, there is provided a recessed portion 50 which is recessed toward the rotation axis AX1 and whose bottom portion 51 is connected to the outer peripheral portion 31o of the fitting portion 31. ing.

In Mode 1, when the insertion portion 31 of the end member 30 is inserted into the opening 12 of the end portion 11 of the take-up shaft member 10 and the scrap 80 is generated, the end portion 11 of the take-up shaft member 10 and the end member 30 are separated from each other. If the debris 80 enters the concave portion 50 recessed toward the rotation axis AX1 between the regulating portion 32, it is easily discharged to the outside. As a result, the slipping of the end member 30 with respect to the take-up shaft member 10 due to the debris 80 being caught between the take-up shaft member 10 and the end member 30 is suppressed, and the operation of pulling out or winding up the sheet-like member 20 is suppressed. , the winding shaft member 10 and the end member 30 rotate smoothly. Therefore, this aspect can provide a winding device that improves the operability of the sheet-shaped member. As a result, an effect of suppressing the generation of abnormal noise during operation of the sheet-like member or during running of the vehicle is expected.

Here, the end members to which the present technology can be applied may be fitted into both ends of the winding shaft member, or may be fitted into only one end of the winding shaft member.
The sheet-like member wound up by the winding device is a concept that includes screens, shades, blinds, etc., and specifically includes tonneau covers, sunshades, and the like.
The recess between the end of the winding shaft member and the regulating portion of the end member may be formed by a dent provided in the regulating portion of the end member, or may be a dent provided in the end of the winding shaft member. Alternatively, it may be configured by a recess extending over the restricting portion of the end member and the end portion of the winding shaft member.
In addition, the additional remark mentioned above is applied also to the following aspects.

[Aspect 2]
As illustrated in FIGS. 7, 8, 11 and the like, the restricting portion 32 is provided at the end portion 11 of the winding shaft member 10 on each of both sides of the recess 50 in the rotation direction DR1 about the rotation axis AX1. You may have the contact part 32b which contacted. In this aspect, since the contact portions 32b on both sides of the concave portion 50 of the restricting portion 32 in the rotational direction DR1 are in contact with the end portion 11 of the winding shaft member 10, the end portion 11 of the winding shaft member 10 is , the restricting portion 32 is positioned with high accuracy. Therefore, this aspect can provide a winding device that further improves the operability of the sheet-shaped member.

[Aspect 3]
As illustrated in FIGS. 5, 6, etc., the winding shaft member 10 may have a groove 13 along the rotation axis direction D1 in the inner peripheral portion 10i. As illustrated in FIG. 9 and the like, the fitting portion 31 may have a protrusion 33 inserted into the groove 13 on an outer peripheral portion 31o. The ridge 33 of the fitting portion 31 may have a convex portion 40 projecting toward the opposing surface (the bottom surface 14 or the inner portion 15) of the groove 13 of the winding shaft member 10 and abutting against the opposing surface. good. As illustrated in FIG. 11 and the like, the concave portion 50 may be located at a position facing the rotation axis direction D1 from the convex portion 40 .

In Aspect 3 above, even if scrap 80 originating from protrusion 40 provided on protrusion 33 of insertion portion 31 of end member 30 inserted into opening 12 of end 11 of winding shaft member 10, Chips 80 can easily enter recesses 50 that are recessed toward the rotation axis AX1 between the end 11 of the shaft member 10 and the regulating portion 32 of the end member 30 in the direction of the rotation axis D1 from the projection 40. discharged to the outside. Therefore, this aspect can provide a winding device that further improves the operability of the sheet-shaped member.
Here, the shape of the convex portion that protrudes toward the opposing surface includes a shape that tapers toward the opposing surface, a shape that protrudes toward the opposing surface, and a shape that extends toward the opposing surface. It includes a shape that bulges toward the facing surface, and the like. This remark also applies to the following aspects.

[Aspect 4]
As illustrated in FIGS. 7 to 9 and the like, the ridge 33 of the fitting portion 31 may have a top surface 34 . As illustrated in FIG. 6 and the like, the groove 13 of the winding shaft member 10 may have a bottom surface 14 facing the top surface 34 of the ridge 33 . As illustrated in FIGS. 8, 9, 11, etc., the convex portion 40 is a convex portion on the top surface that protrudes from the top surface 34 of the ridge 33 toward the bottom surface 14 of the groove 13 and hits the bottom surface 14. 41 may be included. The plurality of top surface protrusions 41 include a first direction top surface protrusion 41a, a second direction top surface protrusion 41b, and a third direction top surface protrusion in order of the rotation direction DR1 about the rotation axis AX1. A portion 41c may be included. An angle θ1 formed by the first direction top surface protrusion 41a and the second direction top surface protrusion 41b about the rotation axis AX1 is 100° to 165°, and the second direction top surface protrusion 41b and the third direction top convex portion 41c is 100° to 165°, and the angle θ3 formed between the third direction top convex portion 41c and the first direction top convex portion 41a is 30°. ° to 160°. However, θ1+θ2+θ3=360°.

In Aspect 4, since 100°≦θ1≦165°, 100°≦θ2≦165°, and 30°≦θ3≦160°, the three top surface convex portions 41 are perpendicular to the rotation axis AX1, In addition, rattling of the end member 30 with respect to the winding shaft member 10 is suppressed in two directions perpendicular to each other. Therefore, this aspect can provide a technique capable of effectively suppressing rattling of the end member with respect to the winding shaft member.

[Aspect 5]
As illustrated in FIGS. 7 to 9 and the like, the projection 33 of the fitting portion 31 may have a top surface 34 and a pair of side portions 35 sandwiching the top surface 34 . As illustrated in FIG. 6 and the like, the groove 13 of the winding shaft member 10 has a bottom surface 14 facing the top surface 34 of the protrusion 33 and an inner portion 15 facing the side portion 35 of the protrusion 33. may have As illustrated in FIGS. 7 to 9 and the like, the convex portion 40 projects from the top surface 34 of the protrusion 33 toward the bottom surface 14 of the groove 13 and hits the bottom surface 14. In addition, a side protrusion 42 may be included that protrudes from the side portion 35 of the protrusion 33 toward the inner portion 15 of the groove 13 and contacts the inner portion 15 . As illustrated in FIG. 10 and the like, the center position L1 of the top surface convex portion 41 and the center position L2 of the side convex portion 42 may be different in the rotation axis direction D1.

In the above-described aspect 5, since the center position L1 of the top surface convex portion 41 and the center position L2 of the side convex portion 42 are different in the rotation axis direction D1, the end member 30 does not play with the take-up shaft member 10. A force for suppressing sticking is generated in a distributed manner in the rotation axis direction D1. Therefore, it is possible to provide a technique capable of effectively suppressing rattling of the shaft member with respect to the take-up shaft member.

(2) Specific example of winding device:
FIG. 1 shows an example in which the winding device 1 is used as a tonneau cover device for a luggage compartment 101 of an automobile 100, and shows the winding device 1 with a back door (tailgate) 104 opened and part of the vehicle omitted. there is The lower part of FIG. 1 shows an enlarged view of the winding device 1 in which a sheet-like member 20 called a tonneau cover or the like is pulled out from the case member 61 . A car 100 shown in FIG. 1 is a road car designed and equipped to be used on a road. It is considered a passenger car. When the protruding portion 26 of the reinforcement member 25 of the sheet member 20 pulled out from the case member 61 is hooked to the engaging portion of the rail member 107 of the automobile 100, the luggage compartment 101 can be vertically partitioned. The rail members 107 are located on the left and right sides of the vehicle 100. One projecting portion 26 of the reinforcement member 25 is hooked to the locking portion of the left rail member 107, and the other projecting portion 26 of the reinforcement member 25 is located on the right side. It is hooked on the locking portion of the rail member 107 . In this way, the luggage placed on the luggage compartment floor 108 can be shielded, and the luggage cannot be visually recognized from the outside of the vehicle.

The upper part of FIG. 2 shows an example of the winding device 1 in which the illustration of the holder 62 is omitted and the plate members 63 and 64 are disassembled. Immediately below the exploded view shown in the upper part of FIG. 2, there is shown an example of a cross section of the winding device 1 taken along the AA section line of the exploded view, omitting the illustration of the rear portion. Furthermore, an example of the side surface of the slide member 72 is shown in the lower part of FIG.
Here, reference D1 indicates the rotation axis direction D1 of the cylindrical take-up shaft member 10 . Reference sign D1i indicates the inside in the direction of the rotation axis, and sign D1o indicates the outside in the direction of the rotation axis. Reference numeral D21 shown in FIG. 1 indicates a housing direction in which the flexible main body portion 21 of the sheet-like member 20 is housed in the case member 61 . Reference numeral D22 shown in FIG. 1 indicates a pull-out direction, which is a direction in which the main body portion 21 is pulled out from the case member 61. As shown in FIG. 1, the rotation axis direction D1 is the width direction of the automobile 100, the accommodation direction D21 is the front direction of the automobile 100, and the pull-out direction D22 is the rear direction of the automobile 100. As shown in FIG.

Holders 62A and 62B are attached to both ends of the case member 61 of the winding device 1 so as to be slidable in the rotation axis direction D1 within a predetermined range. Thereby, the winding device 1 as a whole can be expanded and contracted in the rotation axis direction D1. By fitting the holders 62A and 62B into recesses provided in the left and right side walls of the luggage compartment 101, the winding device 1 is assembled and fixed to the luggage compartment 101. As shown in FIG. The holders 62A and 62B are collectively called a holder 62. As shown in FIG.

FIG. 3 shows an example of the end portion of the winding device 1 by omitting illustration of the sheet member 20 and seeing through the case member 61 . 4 illustrates the winding shaft member 10, the end member 30, the shaft member 65, and the plate member 64. FIG. FIG. 5 illustrates the end member 30 and the take-up shaft member 10 from another angle. FIG. 6 shows an example of the take-up shaft member 10. As shown in FIG. Here, reference character DR1 indicates the rotational direction of the winding shaft member 10 and the end member 30, and reference character D2 indicates the radial direction of the winding shaft member 10 and the end member 30 about the rotation axis AX1. 7 and 8 show an example of the end member 30. FIG. In FIG. 8, three concave portions 50 in the restricting portion 32 of the end member 30 are hatched. FIG. 9 shows an example of the positional relationship between the end member 30 and the take-up shaft member 10. As shown in FIG. The winding shaft member 10 is indicated by a two-dot chain line. FIG. 10 shows an example of the end member 30 viewed from a direction orthogonal to the rotation axis AX1. FIG. 11 shows an example of a vertical cross section of the winding shaft member 10 and the end member 30 at a position passing through the top convex portion 41. As shown in FIG.

The take-up shaft member 10 is an elongated tubular member with both ends opened, and is arranged in the case member 61 so as to be rotatable around a rotation axis AX1 along the longitudinal direction (rotational axis direction D1). Incidentally, the winding shaft member is also called a barrel member or the like. As shown in FIG. 2 , end members 30 are attached to both ends 11 of the winding shaft member 10 . Here, the end member 30A is fitted into the opening 12 of one end 11a, and the end member 30B is fitted into the opening 12 of the other end 11b. The end portions 11a and 11b are collectively called the end portion 11, and the end members 30A and 30B are collectively called the end member 30. As shown in FIG. A slide member 72 is inserted into the hollow portion 10h of the take-up shaft member 10. As shown in FIG.

As shown in FIG. 6 and the like, the cross-sectional shape of the outer peripheral surface 10o of the winding shaft member 10 in the cross section perpendicular to the rotation axis AX1 is substantially circular. On the other hand, the cross-sectional shape of the inner peripheral portion 10i of the take-up shaft member 10 is non-circular. A plurality of grooves 13 are formed along the rotation axis direction D1 in the inner peripheral portion 10i. For convenience, it is assumed that the grooves 13a, 13b, 13c, 13d, 13e, and 13f are formed in order at intervals of 60° in the rotation direction DR1 about the rotation axis AX1. Each groove 13a-13f has a bottom surface 14 and a pair of inner portions 15 sandwiching the bottom surface 14. As shown in FIG. The bottom surfaces 14 of the grooves 13a to 13f are substantially aligned with the circumference of the same imaginary circle V1 centered on the rotation axis AX1. For convenience, of the pair of inner portions 15 of each of the grooves 13a to 13f, one inner portion in the rotational direction DR1 is denoted by reference numeral 15a and the other inner portion is denoted by reference numeral 15b. The grooves 13a to 13f are collectively referred to as grooves 13, and the inner portions 15a and 15b are collectively referred to as inner portions 15. As shown in FIG. Intermediate ridges 17 are formed between adjacent grooves 13 . The number of intermediate ridges 17 is the same as the number of grooves 13 . When the take-up shaft member 10 is an extruded product, the outer peripheral surface 10o and the inner peripheral portion 10i have substantially the same shape over the entire rotating shaft direction D1.

Since the six grooves 13a to 13f of this specific example are formed in the same shape and at regular intervals, when the winding shaft member 10 and the end member 30 are fitted together, the grooves 13 of the winding shaft member 10 and the end member It is easy to align the relative positions of the ridges 30 and the ridges 33 in the rotational direction DR1. Therefore, the work of attaching the end member 30 to the winding shaft member 10 can be easily performed.

As the material of the winding shaft member 10, a metal such as aluminum, a synthetic resin such as a thermoplastic resin, or the like can be used. If a pipe material formed by extruding aluminum into a cylindrical shape is used for the winding shaft member, the winding shaft member can be easily made lightweight and have a required strength. The size of the aluminum take-up shaft member is not particularly limited. For example, the diameter (inner diameter) of an imaginary circle passing through the bottom surface 14 of the inner peripheral portion can be about 4 to 20 mm, and the outer diameter can be about 6 to 30 mm. can.

The body portion 21 of the sheet-like member 20 shown in FIGS. 1 and 2 is formed of a flexible sheet-like material that can be wound on the outer peripheral surface 10 o of the take-up shaft member 10 . The main body portion 21 is made of a flexible material, preferably a light-shielding soft material. The main body portion 21 is preferably made of a stretchable material such as a jersey material that is highly stretchable and does not easily wrinkle. Textiles, various mesh materials, and the like can also be used. That is, the concept of sheet-like material includes net-like materials and the like, and the concept of sheet-like members includes net-like members and the like. One end 22 of the main body portion 21 is fixed to the outer peripheral surface 10o of the take-up shaft member by fixing means such as double-sided tape. A reinforcement member 25 harder than the body portion 21 is attached to the tip edge (the other end 23 ) of the body portion 21 . A plate-shaped member, a rod-shaped member, a cylindrical member, or the like can be used as the reinforcement member 25, and a molded product such as a synthetic resin injection molded product can be used. The reinforcement member 25 is formed with protruding portions 26 , 26 that can be hooked on the locking portions of the rail member 107 in order to maintain the drawn-out state of the main body portion 21 .

The fitting portion 31 of the end member 30 shown in FIGS. Thereby, the restricting portion 32 of the end member 30 conceals the opening 12 . The end member 30 and the winding shaft member 10 are fitted so as not to move relative to each other in the rotation axis direction D1 and the rotation direction DR1. Note that the end member is also called a rotor, a cap, or the like. An end member 30A attached to one end portion 11a of the take-up shaft member 10 is formed with a shaft portion 30d that protrudes outward in the rotation shaft direction D1o on the side opposite to the take-up shaft member 10. As shown in FIG. The shaft portion 30d is held by a bearing portion 63a of a plate member 63 attached to the end portion of the case member 61 so as to be rotatable about the rotation axis AX1. An end member 30B attached to the other end portion 11b of the take-up shaft member 10 is formed with a bearing hole 30c penetrating in the rotation axis direction D1. A shaft member 65 is inserted into the bearing hole 30c. In other words, the cylindrical end member 30B functions as a bearing member that is rotatably held with respect to the shaft member 65 about the rotation axis AX1. In this specific example, the case member 61, the holder 62, the plate members 63 and 64, and the shaft member 65 constitute the support portion 60, and the support portion 60 allows the end members 30A and 30B to rotate about the rotation axis AX1. supported by As a result, the sheet-like member 20 can be wound onto the outer peripheral surface 10 o of the winding shaft member 10 .

As shown in FIGS. 7, 8, etc., the cross-sectional shape of the bearing hole 30c of the end member 30 in the cross section perpendicular to the rotation axis AX1 is substantially circular from the design point of view except for the recesses 31r arranged in a small portion. It is On the other hand, the cross-sectional shape of the outer peripheral portion 31o of the fitting portion 31 is non-circular. A plurality of protrusions 33 are formed along the rotation axis direction D1 on the outer peripheral portion 31o. For convenience, it is assumed that the ridges 33a, 33b, 33c, 33d, 33e, and 33f are formed in order at intervals of 60° in the rotation direction DR1 about the rotation axis AX1. Each of the ridges 33a-33f has a top surface 34 and a pair of side portions 35 sandwiching the top surface 34. As shown in FIG. The top surface 34 is substantially aligned with the circumference of the same imaginary circle V2 centered on the rotation axis AX1. For convenience, of the pair of side portions 35 of each of the protrusions 33a to 33f, the side portion facing the inner portion 15a of the groove 13 of the winding shaft member 10 is denoted by reference numeral 35a, and the other inner portion is denoted by reference numeral 35b. . The protrusions 33a to 33f are collectively referred to as a protrusion 33, and the side portions 35a and 35b are collectively referred to as a side portion 35. As shown in FIG. Outer grooves 37 are formed along the ridges between adjacent ridges. The outer grooves 37 formed between the ridges can be rephrased as intermediate grooves. The number of outer grooves 37 is the same as the number of ridges 33 .

The protrusions 33 shown in FIGS. 8 and 9 are the same in number as the grooves 13 of the take-up shaft member 10 and are inserted into the grooves 13 . The top surface 34 and the side portions 35a, 35b extend in the axial direction (D1) of the end member 30. As shown in FIG. Six combinations of the top surface 34 and the side portions 35a and 35b are formed at intervals on the outer peripheral portion 31o. By inserting the ridge 33 into the groove 13, the end member 30 is attached to the take-up shaft member 10 so as to be slidable in the rotational axis direction D1 and unrotatable in the rotational direction DR1.

For the end member 30, a molded product such as an injection molded product of synthetic resin can be used. Thermoplastic resins such as polyamide, polypropylene (PP), polyacetal (POM), and polybutylene terephthalate (PBT) can be used for this synthetic resin. Additives such as reinforcing fibers may be added to these resins.

The case member 61 shown in FIGS. 1 and 3 has an outlet 61a for drawing out the body portion 21 of the sheet-like member 20, forming a space for accommodating the winding shaft member 10 and the wound body portion 21. It is Plate members 63 and 64 are fixed to both ends of the case member 61, and a holder 62 is attached so as to be slidable in the rotation axis direction D1 within a predetermined range. A compression coil spring (not shown) and a plate member 63 shown in FIG. 2 are inserted together with one end of the winding shaft member 10 into the left holder 62A. A compression coil spring (not shown) and the plate member 64 shown in FIG. These compression coil springs urge the holders 62A and 62B, which are fitted into the concave portions of the side walls of the luggage compartment 101, toward the rotational axis direction outer side D1o.

A plate member 64 shown in FIG. 4 and the like is formed with a star-shaped hole 64a having a star-shaped cross section into which the star-shaped portion 65a of the shaft member 65 is inserted, and an engaging hole 64b into which the screw 66 is inserted. For example, the portion of the plate member 64 facing the end of the case member 61 is fitted into the opening at the end of the case member 61, the screw 66 is inserted into the engagement hole 64b, and a fastening member (for example, screw ), the plate member 64 is attached to the case member 61 by fixing the plate member 64 to the case member 61 .
On the other hand, the plate member 63 shown in FIG. 2 is formed with a bearing portion 63a into which the shaft portion 30d of the end member 30A is inserted so as to be rotatable around the rotation axis AX1. The plate member 63 inserted into the holder 62A is positioned similarly to the plate member 64. As shown in FIG. The end member 30A is rotatably supported about the rotation axis AX1 with respect to the plate member 63 positioned by the holder 62A. That is, the plate member 63 becomes a main portion of the support portion 60 with respect to the end member 30A having the shaft portion 30d.

The shaft member 65 shown in FIG. 4 and the like has a star-shaped portion 65a having a star-shaped cross section, a flange portion 65b, and a body portion 65c to be inserted into the bearing hole 30c of the end member 30B. The cross-sectional shape of the outer peripheral surface of the body portion 65c in the cross section perpendicular to the rotation axis AX1 is substantially circular. The outer diameter of the body portion 65c is slightly smaller than the inner diameter of the bearing hole 30c of the end member 30B. By fitting the star-shaped hole 64a and the star-shaped portion 65a of the plate member 64 positioned in the holder 62B, the shaft member 65 is arranged so as not to rotate about the rotation axis AX1. The end member 30B functions as a bearing member and is rotatably supported about the rotation axis AX1 with respect to the main body portion 65c of the shaft member 65 fitted with the plate member 64 positioned on the holder 62B. That is, the shaft member 65 becomes the main part of the support portion 60 for the end member 30B having the bearing hole 30c.

For the shaft member 65, a molded product such as an injection molded product of synthetic resin can be used. Thermoplastic resins such as polyamide, PP, POM, and PBT can be used for this synthetic resin. Additives such as reinforcing fibers may be added to these resins.

The biasing portion 70 that biases the winding shaft member 10 in the rotational direction DR<b>1 has a spring (elastic member) 71 inserted into the hollow portion of the winding shaft member 10 and a slide member 72 . The spring 71 shown in FIG. 2 is a coil spring with one end 71 a attached to the slide member 72 and the other end 71 b attached to the main body 65 c of the shaft member 65 . Coil springs are also called coil springs, helical springs, and the like. Six ridges 72a matching the grooves 13a to 13f of the winding shaft member 10 are formed on the outer peripheral portion 72o of the slide member 72 shown in FIG. By inserting each projection 72a into the groove 13, the slide member 72 is slidable with respect to the take-up shaft member 10 in the rotation axis direction D1 and is not relatively movable in the rotation direction DR1. fit together. Therefore, when the body portion 21 of the sheet-like member 20 is wound by the biasing force of the spring 71, the slide member 72 and the end portion 71a of the spring 71 rotate in the winding direction together with the winding shaft member 10 and the like. Further, when the body portion 21 of the sheet-like member 20 is pulled out, the slide member 72 and the end portion 71a of the spring 71 rotate together with the winding shaft member 10 and the like in the direction opposite to the winding direction. The urging force increases. When the take-up shaft member 10 rotates, the slide member 72 slides in the rotation axis direction D1 with respect to the take-up shaft member 10 in accordance with the expansion and contraction of the spring 71. contact with the inner peripheral portion 10i is suppressed, and the generation of abnormal noise due to this contact is suppressed. A soundproof tube may be inserted between the spring 71 and the winding shaft member 10 in order to further suppress the occurrence of noise.

By the way, if the gap between the inner peripheral portion 10i of the winding shaft member 10 and the outer peripheral portion 31o of the fitting portion 31 of the end member 30 is narrowed, the frictional force between the inner peripheral portion 10i and the outer peripheral portion 31o causes the winding shaft member 10 to move away from the winding shaft member 10. Although it becomes difficult to remove the end member 30, it becomes difficult to insert the fitting portion 31 of the end member into the opening 12 of the winding shaft member. On the other hand, simply widening the gap between the inner peripheral portion 10i of the winding shaft member and the outer peripheral portion 31o of the fitting portion of the end member makes it easier to insert the fitting portion 31 of the end member into the opening 12 of the winding shaft member. The rattling in the rotational direction DR1 between the inner peripheral portion 10i of the winding shaft member and the outer peripheral portion 31o of the fitting portion of the end member increases, and a difference outside the allowable limit occurs when the sheet-like member 20 is operated or when the automobile is running. A sound may be generated, and the end member 30 may fall off the winding shaft member 10 . Therefore, by forming a convex portion 40 (see, for example, FIG. 7) on the ridge 33 of the end member 30, the end member 30 can be held on the end portion 11 of the take-up shaft member 10, and the take-up shaft member 10 can be It is compatible with inserting the fitting portion 31 of the end member 30 into the opening 12 .

However, when the insertion portion 31 of the end member 30 is press-fitted into the opening 12 of the end portion 11 of the winding shaft member 10 , the projection 40 provided on the projection 33 of the insertion portion 31 There is a possibility that it will be scraped off by hitting it. If scraps 80 are produced by scraping the protrusions 40 , there is a possibility that the scraps may be caught between the winding shaft member 10 and the end member 30 , causing the end member 30 to shift slightly obliquely with respect to the winding shaft member 10 . occur. If the end member 30 is obliquely displaced with respect to the take-up shaft member 10, the smoothness of rotation of the take-up shaft member 10 and the end member 30 decreases when the sheet member 20 is pulled out or wound up. There is a possibility that an abnormal noise will be generated when the sheet-like member 20 is operated, and a possibility that an abnormal noise will be generated when the vehicle is running.

Therefore, in the winding device 1 of this specific example, as shown in FIG. It has a concave portion 50 for discharging outside scraps 80 generated by scraping off the end portion 11 of the take-up shaft member 10 when it is inserted. The recessed portion 50 for scrap discharge is located between the end portion 11 of the winding shaft member 10 and the restricting portion 32 of the end member 30, and is recessed toward the rotation axis AX1 so that the bottom portion 51 is aligned with the outer peripheral portion 31o of the fitting portion 31. It is connected. As shown in FIG. 8, the concave portion 50 of this specific example is formed by three concave portions provided in the restricting portion 32 of the end member 30. As shown in FIG. As a result, each recess 50 is recessed from the outer peripheral surface 10 o of the winding shaft member 10 and the outer peripheral surface 32 o of the restricting portion 32 toward the rotation axis AX 1 , and the bottom portion 51 is connected to the outer peripheral portion 31 o of the fitting portion 31 . A contact portion 32b that contacts the end portion 11 of the take-up shaft member 10 is arranged between the concave portions 50 in the rotation direction DR1 about the rotation axis AX1.

Figures 7-9 show an end member 30B having a bearing hole 30c. The end member 30B has a fitting portion 31 that fits into the opening 12 of the end portion 11 of the winding shaft member 10, and a restricting portion 32 that is thicker than the fitting portion 31 and does not fit into the opening 12. As shown in FIGS. 6, 8, and 9, each projection 33 of the fitting portion 31 has a top surface 34 facing the bottom surface 14 of the groove 13 of the take-up shaft member 10, and a side portion facing the inner portion 15a of the groove 13. 35a and a side portion 35b facing the inner portion 15b of the groove 13. As shown in FIG. The intermediate ridges 17 of the grooves 13 of the winding shaft member 10 are inserted into the respective outer grooves 37 of the fitting portion 31 .

The restricting portion 32 contacts the end portion 11 of the take-up shaft member 10 at a position on the outer side D1o in the rotation shaft direction from the end portion 11 of the take-up shaft member 10 . The cross-sectional shape of the outer peripheral surface 32o of the restricting portion 32 is substantially circular. The restricting portion 32 has a plurality of recesses 50 for waste discharge between the contact portions 32b, and further has a plurality of lightening portions 32a for reducing the amount of resin on the outer peripheral portion. When the end member 30B is inserted into the opening 12 of the end portion 11b of the take-up shaft member 10, the plurality of contact portions 32b abut against the end surface of the take-up shaft member 10, thereby positioning the end member 30B. In this state, each recess 50 is recessed from the outer peripheral surface 10 o of the winding shaft member 10 and the outer peripheral surface 32 o of the restricting portion 32 toward the rotation axis AX 1 , and the bottom portion 51 is connected to the outer peripheral portion 31 o of the fitting portion 31 .

Although not shown, the end member 30A having the protruding shaft portion 30d also has similar fitting portions and restricting portions. As described above, the shaft portion 30d of the end member 30A is inserted into the bearing portion 63a of the plate member 63, and the body portion 65c of the shaft member 65 is inserted into the bearing hole 30c of the end member 30B. As a result, the end members 30A and 30B and the take-up shaft member 10 are rotatably supported by the plate member 63 and the shaft member 65 about the rotation axis AX1.

As shown in FIG. 9, between the side portions 35a and 35b of the ridge 33 of the end member 30 and the inner portions 15a and 15b of the groove 13 of the take-up shaft member 10, a very slight constant gap is formed. designed to be A plurality of protrusions 40 are arranged on the ridge 33 in order to suppress looseness between the inner peripheral portion 10i of the take-up shaft member 10 and the outer peripheral portion 31o of the fitting portion 31 of the end member 30 . As shown in FIGS. 8, 9, etc., the plurality of projections 40 are a plurality of top surface projections tapered from the top surface 34 of the ridge 33 toward the bottom surface 14 of the groove 13 and hitting the bottom surface 14. 41 and a plurality of side projections 42 tapering from the side 35 of the ridge 33 toward the inner portion 15 of the groove 13 and abutting the inner portion 15 . Each top surface convex portion 41 is partially formed with respect to the top surface 34 of the protrusion 33 and protrudes outward from a virtual circle V2 aligned with the top surface 34 . Each side convex portion 42 is partially formed on the side portion 35 of the protrusion 33 so as not to protrude outside the virtual circle V2. These protrusions 40 are designed to interfere with the opposing surface (bottom surface 14 or inner portion 15) of the groove 13 when the fitting portion 31 of the end member 30 is inserted into the opening 12 of the take-up shaft member 10. . When the end member 30 made of resin is attached to the winding shaft member 10 made of metal, the protrusions 40 that are softer than the winding shaft member 10 are deformed so as to be crushed. As a result, an appropriate frictional force acts between the inner peripheral portion 10i of the take-up shaft member 10 and the outer peripheral portion 31o of the fitting portion 31, and relative movement of the end member 30 with respect to the take-up shaft member 10 is suppressed.

The plurality of top surface protrusions 41 are arranged on the top surface 34 of the first direction top surface protrusion 41a provided on the top surface 34 of the protrusion 33b and on the top surface 34 of the protrusion 33d in order of the rotation direction DR1 about the rotation axis AX1. It includes a second direction top surface protrusion 41b provided and a third direction top surface protrusion 41c provided on the top surface 34 of the ridge 33f. Therefore, the plurality of ridges 33 of the fitting portion 31 are arranged in the order of the rotation direction DR1 about the rotation axis AX1, the ridges 33a having no top surface convex portion, the ridges 33b having the top surface convex portion 41, and the top surface convex portions. ridges 33c with no ridges, ridges 33d with top ridges 41, ridges 33e without top ridges, and ridges 33f with top ridges 41; The first direction top surface protrusion 41a, the second direction top surface protrusion 41b, and the third direction top surface protrusion 41c are arranged intermittently at two locations in the rotation axis direction D1. Of course, the number of top surface protrusions 41a, 41b, 41c in the rotation axis direction D1 may be one, or may be three or more.

Here, as shown in FIG. 8, the angle formed by the first direction top surface convex portion 41a and the second direction top surface convex portion 41b around the rotation axis AX1 is θ1, and the second direction top surface convex portion 41b is and the third-direction top convex portion 41c is defined as θ2, and the angle formed between the third-direction top-surface convex portion 41c and the first-direction top convex portion 41a is defined as θ3. θ1+θ2+θ3=360°, 100°≦θ1≦165°, 100°≦θ2≦165°, and 30°≦θ3≦160°. The reference position of each top surface protrusion 41 in the rotation direction DR1 about the rotation axis AX1 is the middle position in the rotation direction DR1 of the portion where the top surface protrusion 41 protrudes from the top surface 34 .

FIGS. 12A and 12B schematically show examples in which the angles θ1, θ2, and θ3 between the top surface protrusions are changed while the second direction top surface protrusion 41b is in the upper position. FIG. 12A shows the positional relationship of the top convex portions 41a, 41b, and 41c when θ1=θ2=100° and θ3=160°. FIG. 12B shows the positional relationship of the top convex portions 41a, 41b, and 41c when θ1=θ2=165° and θ3=30°.
The angles θ1 and θ2 are 100° or more, which is sufficiently larger than a right angle, and 165° or less, which is sufficiently smaller than a flat angle. The remaining angle θ3 is 30° or more and 160° or less, which is sufficiently smaller than a flat angle. Therefore, the rattling of the end member 30 with respect to the winding shaft member 10 is suppressed in two directions perpendicular to the rotation axis AX1 and perpendicular to each other by the three top surface protrusions 41 centered on the rotation axis AX1. .

Further, more preferable relationships among the angles θ1, θ2, and θ3 may be 100°≦θ1≦140°, 100°≦θ2≦140°, and 100°≦θ3≦140°. In this case, all the angles θ1, θ2, θ3 are 100° or more, which is sufficiently larger than a right angle, and 140° or less, which is sufficiently smaller than a flat angle. Furthermore, the angles θ1, θ2, and θ3 are more preferably 110° or more, and more preferably 130° or less. Particularly preferable angles θ1, θ2, θ3 are θ1=θ2=θ3=120°.

The first direction top surface protrusion, the second direction top surface protrusion, and the third direction top surface protrusion are elements that are relatively determined in the rotation direction DR1 about the rotation axis AX1. Therefore, for example, the reference numeral 41b may be applied to the first direction top surface convex portion, the reference numeral 41c may be applied to the second direction top surface convex portion, and the reference numeral 41a may be applied to the third direction top surface convex portion, or the reference numeral 41c may be applied to the top surface convex portion in the second direction. It is also possible to apply the reference numeral 41b to the first direction top surface convex portion and apply the reference numeral 41a to the second direction top surface convex portion and apply the reference numeral 41a to the third direction top surface convex portion.

The plurality of side projections 42 are first-direction side projections protruding from the side portion 35b of the protrusion 33 in a predetermined direction (clockwise in FIGS. 8 and 9) of rotation DR1 about the rotation axis AX1. 42a, and a second direction side convex portion 42b protruding from the side portion 35a of the projection 33 in the direction of rotation DR1 opposite to the predetermined direction (counterclockwise in FIGS. 8 and 9). By arranging the first direction side convex portion 42 a on the side portion 35 b of the protrusion 33 , the fitting portion 31 inserted into the opening 12 of the end portion 11 of the winding shaft member 10 is attached to the winding shaft member 10 . On the other hand, it is pushed counterclockwise in FIG. In addition, since the second direction side protrusion 42b is arranged on the side 35a of the protrusion 33, the insertion portion 31 inserted into the opening 12 of the end 11 of the take-up shaft member 10 is inserted into the take-up shaft member. 10 is pushed clockwise in FIG. Therefore, rattling of the end member 30 with respect to the take-up shaft member 10 is effectively suppressed in both directions of the rotation direction DR1.

As shown in FIGS. 8, 11 and the like, the restricting portion 32 of the end member 30 is recessed toward the rotation axis AX1 at a position facing the rotation axis direction D1 from the convex portion 40, and the bottom portion 51 extends from the outer peripheral portion 31o of the fitting portion 31. It has a plurality of recesses 50 connected to the . By inserting the fitting portion 31 into the opening 12 of the end portion 11 of the winding shaft member 10 , each concave portion 50 is arranged between the end portion 11 of the winding shaft member 10 and the restricting portion 32 of the end member 30 . be.

The plurality of recesses 50 shown in FIG. 8 are positioned in the rotation axis direction D1 from the first direction top surface protrusion 41a and the first direction side protrusion 42a in order of the rotation direction DR1 about the rotation axis AX1. From the first concave portion 50a, the second direction top surface convex portion 41b, and the second direction side convex portion 42b to the second concave portion 50b in the rotation axis direction D1, and the third direction top surface convex portion 41c to the rotation axis It includes a third recess 50c positioned in the direction D1. Between the first recessed portion 50a and the second recessed portion 50b, between the second recessed portion 50b and the third recessed portion 50c, and between the third recessed portion 50c and the first recessed portion 50a in the rotation direction DR1, A contact portion 32b is arranged. That is, in the rotation direction DR1, the restricting portion 32 has contact portions 32b on both sides of the first recess 50a, contact portions 32b on both sides of the second recess 50b, and contact portions 32b on both sides of the third recess 50c. have contact portions 32b respectively. Each contact portion 32b is in contact with the end portion 11 of the winding shaft member 10, as shown in FIG. Since the contact portions 32b on both sides of the concave portion 50 of the regulating portion 32 in the rotational direction DR1 are in contact with the end portion 11 of the winding shaft member 10, the regulating portion 32 is precisely positioned.

Here, before the end member 30 is attached to the winding shaft member 10, the volume of the convex portion 40 located in the direction of the rotation axis D1 from the concave portion 50 is defined as V. As shown in FIG. If there are a plurality of protrusions 40 at positions facing the rotation axis direction D1 from the recess 50, the volume V is the volume of the plurality of protrusions 40 combined. The volume of each concave portion 50 is preferably equal to or greater than the volume V of the convex portion, and more preferably equal to or greater than twice the volume V, in order to easily eject debris 80 (see FIG. 11) generated when the end member 30 is press-fitted.

Note that the range of each recess 50 in the rotation direction DR1 can be changed as appropriate. For example, the concave portion at the position facing the rotation axis direction D1 from the first direction top surface convex portion 41a and the concave portion at the position facing the rotation axis direction D1 from the first direction side convex portion 42a may be separated.

FIG. 10 illustrates the positional relationship between the top convex portion 41 and the side convex portion 42 in the rotation axis direction D1. As described above, the top surface protrusions 41 are intermittently arranged at two locations in the rotation axis direction D1. The position L1 of the center of each top surface protrusion 41 is an intermediate position in the rotation axis direction D1 of the portion where the top surface protrusion 41 protrudes from the top surface 34 . The position L2 of the center of the side protrusion 42 is the middle position in the rotation axis direction D1 of the portion where the side protrusion 42 protrudes from the side portion 35 . As shown in FIG. 10 , the center position L2 of the side protrusion 42 is between two center positions L1 of the top surface protrusions 41 in the rotation axis direction D1. Therefore, the position L1 of the center of the top convex portion 41 and the position L2 of the center of the side convex portion 42 are different.

When the center position of the top convex portion and the center position of the side convex portion are the same in the direction of the rotating shaft, the load for press-fitting the fitting portion of the end member into the opening of the end portion of the take-up shaft member is large. It gets expensive. In addition, the force for suppressing rattling of the end member with respect to the take-up shaft member is generated only at the same position in the rotation shaft direction.
On the other hand, in this specific example, the position L1 of the center of the top convex portion 41 and the position L2 of the center of the side convex portion 42 are different in the rotation axis direction D1. The load for press-fitting the fitting portion 31 of the end member 30 into the end member 12 is small. In addition, the force for suppressing rattling of the end member 30 with respect to the take-up shaft member 10 is distributed in the rotation axis direction D1. Therefore, rattling of the shaft member with respect to the winding shaft member is effectively suppressed.

The winding device 1 can be assembled, for example, as follows. Of course, the assembly order can be changed as appropriate.
First, the body portion 65c of the shaft member 65 is inserted into the bearing hole 30c of the end member 30B, one end 71a of the spring 71 is attached to the slide member 72, and the other end 71b of the spring 71 is attached to the body of the shaft member 65. Attach to portion 65c. Also, the slide member 72 is inserted into the hollow portion 10h of the take-up shaft member 10, and the fitting portion 31 of the end member 30B is fitted into the opening 12 of the end portion 11b of the take-up shaft member 10. As shown in FIG. Further, the fitting portion of the end member 30A is fitted into the opening 12 of the end portion 11a of the take-up shaft member 10. As shown in FIG. Further, the main body portion 21 of the sheet-like member 20 is wound around the winding shaft member 10, and the winding shaft member 10 and the like are put into the case member 61 with the reinforcement member protruding from the pull-out port 61a. The holder 62A is attached to one end of the case member 61 so that the shaft portion 30d of the end member 30A is inserted into the shaft portion 63a, and the shaft member 65 is inserted into the star-shaped hole 64a of the plate member 64 while the sheet-like member 20 is being subjected to a winding force. A holder 62B is attached to the other end of the case member 61 so as to insert the star-shaped portion 65a.

(3) Actions and effects of the winding device according to the specific example:
FIG. 11 illustrates a state in which the fitting portion 31 of the end member 30 made of resin is press-fitted into the opening 12 of the end portion 11 of the winding shaft member 10 . When the insertion portion 31 of the end member 30 made of resin is press-fitted into the opening 12 of the end portion 11 of the take-up shaft member 10 , the convex portion 40 provided on the protrusion 33 of the insertion portion 31 is pushed into the opening 12 of the take-up shaft member 10 . The edge 11 may be scraped off. When the convex portion 40 is scraped off, scraps 80 are generated and remain at the end portion 11 of the take-up shaft member 10 . Here, since there is a concave portion 50 where the bottom portion 51 is connected to the outer peripheral portion 31o of the fitting portion 31 at a position in the rotation axis direction D1 from the convex portion 40, the debris 80 enters the concave portion 50. FIG. Since the recessed portion 50 is open radially outward, the debris 80 in the recessed portion 50 is easily discharged to the outside. As a result, the slipping of the end member 30 with respect to the take-up shaft member 10 due to the debris 80 being caught between the take-up shaft member 10 and the end member 30 is suppressed, and the operation of pulling out or winding up the sheet-like member 20 is suppressed. , the winding shaft member 10 and the end member 30 rotate smoothly. Therefore, the operability of the sheet-shaped member is improved, and the generation of abnormal noise during the operation of the sheet-shaped member and the running of the automobile is suppressed.

(4) Modification:
Various modifications of the present invention are conceivable.
The wind-up device may be a sunshade device, a partition device that partitions the space inside the vehicle, for example, into front and rear, or the like, in addition to the tonneau cover device. The sunshade device can be installed on side windows, rear windows, roof windows, front windows, and the like. The direction in which the sheet-like member is pulled out may be upward, downward, leftward, rightward, forward, etc., in addition to the rearward direction.
The spring that can be used for the biasing portion may be a spiral spring, an elastic member made of elastomer, or the like, in addition to the coil spring. The position of the spring may be outside the take-up shaft member, such as outside the end member in the rotation axis direction, instead of inside the take-up shaft member. The urging unit may be of an electric type or the like in addition to a mechanical type using an elastic member such as a spring.
The fitting between the shaft member 65 and the plate member 64 may be, other than the combination of the star-shaped portion 65a and the star-shaped hole 64a, a combination of a portion having a polygonal cross section such as a square cross section and a hole having a similar shape.
The support portion of the end member may be provided directly on the interior material of the automobile. For example, if a bearing portion similar to the bearing portion 63a of the plate member 63 is formed in the interior material, the end member 30A rotates with respect to the interior material by inserting the shaft portion 30d of the end member 30A into the bearing portion of the interior material. supported as possible. In addition, if a protrusion similar to the body portion 65c of the shaft member 65 is formed in the interior material, the protrusion of the interior material is inserted into the bearing hole 30c of the end member 30B to rotate the end member 30B with respect to the interior material. supported as possible.

The groove 13 of the take-up shaft member 10 may be formed only in the end portion 11 of the take-up shaft member 10 instead of being formed in the take-up shaft member 10 over the entirety in the rotation shaft direction D1.
The combination of the grooves 13 and the ridges 33 may be arranged at irregular intervals instead of being arranged at regular intervals around the rotation axis AX1. The number of grooves 13 formed in the take-up shaft member is not limited to 6, but may be 1, 2 to 5, or 7 or more.
The shape of the convex portion 40 may be a shape that protrudes toward the opposing surface, a shape that extends toward the opposing surface, a shape that bulges toward the opposing surface, or the like.
In the specific example described above, both the top surface protrusion 41 and the side protrusion 42 are provided on the protrusion 33. Even if there is no convex portion 41 and side convex portions 42 are present, the effect of improving the operability of the sheet-like member by the corresponding concave portions 50 can be obtained. Further, even when there is only one top surface convex portion 41 as the convex portion 40 and only one side convex portion 42 is provided as the convex portion 40, the corresponding concave portion 50 improves the operability of the sheet member. You can get the effect of

In addition, the portion of the fitting portion 31 that is scraped against the end portion 11 of the take-up shaft member 10 when the fitting portion 31 of the end member 30 is press-fitted is not limited to the convex portion 40, and may be an outer peripheral portion 31o other than the convex portion 40. . Therefore, the position of the recess 50 in the rotation direction DR1 about the rotation axis AX1 is not limited to the position facing the rotation axis direction D1 from the protrusion 40, and may be a position not corresponding to the protrusion 40. Even if a plurality of recesses 50 are intermittently arranged in the rotation direction DR1 regardless of the positions of the protrusions 40, the inserting portion 31 is press-fitted into the recesses 50 by debris generated from the outer peripheral portion 31o. Displacement of the end member 30 with respect to the take-up shaft member 10 due to waste being discharged outside and caught between the take-up shaft member 10 and the end member 30 is suppressed. Therefore, the operability of the sheet-shaped member is improved, and abnormal noise is suppressed when the sheet-shaped member is operated or when the automobile is running.

Furthermore, the present technology can be applied even when the combination of the groove 13 and the ridge 33 is not used for fitting the winding shaft member 10 and the end member 30 . 13 and 14 show an exploded example of another winding device in which the inner peripheral portion 10i of the winding shaft member 10 and the outer peripheral portion 31o of the fitting portion 31 are formed to have a substantially square cross section. 13 and 14 illustrate views of the end member 30 viewed from the inside D1i in the rotation axis direction. Elements that are the same as in the above-described specific example are denoted by the same reference numerals, and detailed description may be omitted.

The outer peripheral portion 31o of the fitting portion 31 shown in FIG. 13 is divided into four surfaces, and each surface tapers toward the inner peripheral portion 10i of the winding shaft member 10 and hits the inner peripheral portion 10i. It has a part 40 . The restricting portion 32 has a recess 50 which is recessed toward the rotation axis AX1 at a position facing the rotation axis direction D1 from each protrusion 40 and whose bottom portion 51 is connected to the outer peripheral portion 31o of the fitting portion 31 . The restricting portion 32 has contact portions 32b that contact the end portion 11 of the winding shaft member 10 on both sides of each recess 50 in the rotation direction DR1 about the rotation axis AX1. In this case also, when the fitting portion 31 of the end member 30 made of resin is press-fitted into the opening 12 of the end portion 11 of the take-up shaft member 10, the convex portion 40 provided on the outer peripheral portion 31o of the fitting portion 31 is pulled up. The end 11 of the shaft member 10 may be scraped off. Since there is a concave portion 50 in which the bottom portion 51 is connected to the outer peripheral portion 31o of the fitting portion 31 at a position in the rotation axis direction D1 from the convex portion 40, debris 80 (see FIG. 11) enters the concave portion 50 and easily goes out. Ejected. Therefore, the slippage of the end member 30 with respect to the take-up shaft member 10 due to the debris 80 being caught between the take-up shaft member 10 and the end member 30 is suppressed, and the operability of the sheet-shaped member is improved. It also suppresses the generation of abnormal noise during operation and running of the automobile.

The protrusion 40 is not provided on the outer peripheral portion 31o of the fitting portion 31 shown in FIG. However, the four ridgeline portions 43 corresponding to the corners of the approximately square cross section of the fitting portion 31 are formed so that the winding shaft 10 is formed when the fitting portion 31 of the end member 30 is press-fitted into the opening 12 of the end portion 11 of the winding shaft member 10 . There is a possibility that the end portion 11 of the member 10 will be scraped off. The restricting portion 32 shown in FIG. 14 has a recessed portion 50 which is recessed toward the rotation axis AX1 at a position connected to each ridge portion 43 and whose bottom portion 51 is connected to the outer peripheral portion 31 o of the fitting portion 31 . The restricting portion 32 has contact portions 32b that contact the end portion 11 of the winding shaft member 10 on both sides of each recess 50 in the rotation direction DR1 about the rotation axis AX1. Also in this case, when the fitting portion 31 is press-fitted, the debris 80 enters the recess 50 and is easily discharged to the outside. Therefore, the slippage of the end member 30 with respect to the take-up shaft member 10 due to the debris 80 being caught between the take-up shaft member 10 and the end member 30 is suppressed, and the operability of the sheet-shaped member is improved. It also suppresses the generation of abnormal noise during operation and running of the automobile.

The cross-sectional shape of the inner peripheral portion 10i of the winding shaft member 10 and the outer peripheral portion 31o of the fitting portion 31 is not particularly limited, and may be a substantially rectangular shape that is not substantially square, a substantially polygonal shape such as a substantially pentagonal shape, a substantially star shape, or the like. . In either case, by arranging the recess 50 at a position where debris 80 is likely to be generated when the fitting portion 31 is press-fitted, the debris 80 enters the recess 50 and is easily discharged to the outside when the fitting portion 31 is press-fitted.

(5) Knot:
As described above, according to the present invention, it is possible to provide techniques such as a winding device that improve the operability of a sheet-like member in various aspects. Of course, the above-described basic actions and effects can be obtained even with a technique consisting only of the constituent elements of the independent claims.
In addition, a configuration in which each configuration disclosed in the above examples is replaced with each other or the combination thereof is changed, and each configuration disclosed in the known technology and the above example is replaced with each other or the combination thereof is changed. , etc. can also be implemented. The present invention also includes these configurations and the like.

Claims (4)

a cylindrical winding shaft member;
An insertion portion that is fitted into an opening at the end of the winding shaft member, and an end portion of the winding shaft member at a position outside the end of the winding shaft member in the rotation axis direction of the winding shaft member. an end member having a regulating portion in contact with and supported by a support portion so as to be rotatable about the rotation axis of the winding shaft member;
A concave portion is provided between the end portion of the winding shaft member and the restricting portion, the concave portion being concave toward the rotating shaft and having a bottom portion connected to the outer peripheral portion of the fitting portion ,
The winding device, wherein the restricting portion has a contact portion that contacts an end portion of the winding shaft member on each of both sides of the concave portion in a rotation direction about the rotation shaft. a cylindrical winding shaft member;
An insertion portion that is fitted into an opening at the end of the winding shaft member, and an end portion of the winding shaft member at a position outside the end of the winding shaft member in the rotation axis direction of the winding shaft member. an end member having a regulating portion in contact with and supported by a support portion so as to be rotatable about the rotation axis of the winding shaft member;
A concave portion is provided between the end portion of the winding shaft member and the restricting portion, the concave portion being concave toward the rotating shaft and having a bottom portion connected to the outer peripheral portion of the fitting portion,
The winding shaft member has a groove along the direction of the rotating shaft on its inner periphery,
The fitting portion has a protrusion inserted into the groove on its outer peripheral portion,
the protrusion of the fitting portion has a convex portion that protrudes toward the facing surface of the groove of the take-up shaft member and contacts the facing surface;
The winding device, wherein the concave portion is located at a position facing the rotating shaft direction from the convex portion. The projection of the fitting portion has a top surface,
the groove of the winding shaft member has a bottom surface facing the top surface of the ridge,
The protrusion includes a plurality of top surface protrusions projecting from the top surface of the protrusion toward the bottom surface of the groove and abutting the bottom surface,
The plurality of top surface protrusions include a first direction top surface protrusion, a second direction top surface protrusion, and a third direction top surface protrusion in order of the rotation direction about the rotation axis,
An angle θ1 formed by the first direction top surface protrusion and the second direction top surface protrusion about the rotation axis is 100° to 165°, and the second direction top surface protrusion and the third an angle θ2 formed with the direction top convex portion is 100° to 165°, and an angle θ3 formed between the third direction top surface convex portion and the first direction top surface convex portion is 30° to 160°;
3. The winding device according to claim 2, wherein [theta ]1+[theta]2+[theta]3=360[deg.]. The protrusion of the fitting portion has a top surface and a pair of side portions sandwiching the top surface,
the groove of the winding shaft member has a bottom face facing the top face of the ridge and an inner part facing the side of the ridge,
The protrusion includes a top surface protrusion that projects from the top surface of the protrusion toward the bottom surface of the groove and hits the bottom surface, and a protrusion that projects from the side portion of the protrusion toward the inner portion of the groove. and includes a side convex portion that hits the inner portion,
The winding device according to claim 2 or 3 , wherein the position of the center of the top surface protrusion and the position of the center of the side protrusion are different in the rotation axis direction.

Images