WO2016084540A1

WO2016084540A1 - Winding device

Info

Publication number: WO2016084540A1
Application number: PCT/JP2015/080372
Authority: WO
Inventors: 亮藤田; 賢一中塚; 俊哉西浦
Original assignee: 林テレンプ株式会社
Priority date: 2014-11-27
Filing date: 2015-10-28
Publication date: 2016-06-02
Also published as: JP2016102000A; JP6419549B2

Abstract

This winding device (1) includes: a cylindrical winding shaft member (10) that has grooves (13) formed in the inner circumferential portion (10i) along the axial direction (D1); and an end member (30) that includes a fitting portion (31) which has protrusions (33) to be inserted in the grooves (13), formed on the outer circumferential portion (31o), and which is fitted into an opening (12) of an end (11) of the winding shaft member (10), and that is supported rotatably about a rotation axis (AX1) of the winding shaft member (10) relative to a support member (60). The protrusions (33) of the fitting portion (31) each include a top surface (34) and a pair of side portions (35) which sandwich the top surface (34). Each of the grooves (13) of the winding shaft member (10) includes inner side portions (15) that face the side portions (35) of a corresponding one of the protrusions (33). At least one of the pair of side portions (35) includes a convex portion (40) that is convex toward the facing inner side portion (15) and that abuts the inner side portion (15).

Description

Winding device

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

An automobile luggage compartment may be provided with a tonneau cover device to cover the upper part of the luggage compartment with a flexible tonneau cover (sheet-like member). Further, a sunshade device may be provided on a vehicle door or the like in order to block direct sunlight with a flexible sunshade (sheet-like member) for anti-glare, or to ensure in-car privacy with a sunshade. is there. Winding devices such as a tonneau cover device and a sunshade device, for example, a cylindrical winding shaft member with one end of the sheet-like member fastened, a spring for biasing the winding shaft member in the direction of winding the sheet-like member, A case having a sheet-like member outlet, and the like. Thereby, a sheet-like member can be pulled out from a case at the time of use, and a sheet-like member can be wound up and stored in a case at the time of non-use.

The sunshade device disclosed in Japanese Patent Application Laid-Open No. 2010-95200 is a flexible shade, a hollow cylindrical shaft for winding the shade, a bearing bush fitted into one end of the shaft, and a bushing rotatably supported A support member, a slider fitted in a rotationally restrained state inside the shaft, a spring member connecting the slider and the support member, and a case having a shade outlet. A plurality of protrusions extending continuously along the axial direction of the shaft are formed on the inner peripheral surface of the hollow cylindrical shaft. A plurality of protrusions extending continuously along the axial direction of the shaft are formed on the outer peripheral surface of the fitting portion of the bush. The fitting portion of the bush has an irregular cross-sectional shape corresponding to the cross-sectional shape of the shaft, and fits in a state in which the bush is rotationally restricted.

JP 2010-95200 A

In the sunshade device, the bush is held at one end of the shaft by the frictional force between the shaft-side protrusion and the bush-side protrusion. However, if the gap between the protrusion on the shaft side and the protrusion on the bush side is narrowed to hold the bush, it becomes difficult to insert the bush into one end of the shaft. On the other hand, if the clearance between the shaft-side ridge and the bush-side ridge is widened so that the bush can be easily inserted into one end of the shaft, the shading in the rotational direction between the shaft and the bush increases, and the shade is operated. When the vehicle is running or when the vehicle is running, an abnormal noise outside the allowable limit may be generated, and the bushing easily falls off the shaft. That is, in the sunshade device, it is not considered to hold both the bush at one end of the shaft and the bush at one end of the shaft.
The problem described above also exists in winding devices other than sunshade devices, such as tonneau cover devices.

The present invention has an object of providing a winding device capable of suppressing the rattling of the winding shaft member and the end member in the rotational direction.

The present invention is a cylindrical winding shaft member in which a groove along the axial direction is formed in the inner peripheral portion;
A protrusion to be inserted into the groove is formed on the outer peripheral portion, and has a fitting portion that is fitted into the opening of the end portion of the winding shaft member, and the rotating shaft of the winding shaft member is centered with respect to the support portion. An end member rotatably supported, and
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 an inner part that faces the side part of the protrusion,
At least one of the pair of side portions has an aspect in which a convex portion is formed toward the inner portion facing each other and has a convex portion that hits the inner portion.

According to the present invention, it is possible to provide a winding device that can suppress rattling of the winding shaft member and the end member in the rotation direction.

FIG. 1 is a perspective view showing an example of a winding device mounted on an automobile. FIG. 2 is a partially exploded view showing an example of the winding device. FIG. 3 is a perspective view illustrating an example of the end portion of the winding device with the sheet member omitted and the case member seen through. 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 winding shaft member from different angles. FIG. 6 is a side view showing an example of the winding 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 the end member. FIG. 9 is a diagram illustrating an example of a positional relationship between the end member and the winding shaft member. FIG. 10 is a diagram showing an example of the positional relationship between the end member and the winding shaft member along the BB cutting line in FIG. FIG. 11 is a perspective view showing a modification of the end member.

Hereinafter, embodiments of the present invention will be described. Of course, the following embodiments are merely examples of the present invention, and all the features shown in the embodiments are not necessarily essential to the means for solving the invention.

(1) Overview of this technology:
First, an overview of the present technology will be described with reference to FIGS. FIGS. 1 to 11 are schematic views, and the drawings may not be consistent.

The winding device 1 includes a cylindrical winding shaft member 10 and an end member 30 as basic elements. The winding shaft member 10 has a groove 13 formed in the inner peripheral portion 10i along the axial direction D1. The end member 30 has a fitting portion 31 in which a protrusion 33 inserted into the groove 13 is formed on the outer peripheral portion 31 o and is fitted into the opening 12 of the end portion 11 of the winding shaft member 10. On the other hand, the take-up shaft member 10 is supported so as to be rotatable about the rotation axis AX1. The protrusion 33 of the insertion portion 31 has a top surface 34 and a pair of side portions 35 sandwiching the top surface 34. The groove 13 of the winding shaft member 10 has an inner portion 15 that faces the side portion 35 of the protrusion 33. At least one of the pair of side portions 35 has a convex portion 40 that is convex toward the inner side portion 15 that faces the inner side portion 15.

The convex part 40 of the side part 35 of the protrusion 33 formed in the outer peripheral part 31o of the insertion part 31 of the end member 30 is the inner part 15 which the groove | channel 13 formed in the inner peripheral part 10i of the winding shaft member 10 opposes. It is hit. Thereby, this technique can provide the winding device which can control rattling to the rotation direction (for example, rotation direction DR1 shown in Drawing 9) of a winding axis member and an end member. As a result, for example, the generation of abnormal noise can be suppressed when the winding device is used or when the vehicle is traveling.

Here, the end member to which the present technology can be applied may be inserted into both ends of the winding shaft member or may be inserted into only one end of the winding shaft member.
The sheet-like member wound around the winding device is a concept including a screen, a shade, a blind, and the like, and specifically includes a tonneau cover, a sunshade, and the like.

By the way, the fitting part 31 may have an outer groove 37 along the protrusion 33. The convex portion 40 of the side portion 35 of the protrusion 33 may be located closer to the top surface 34 than the outer groove 37. In this aspect, since the convex portion 40 that contacts the inner portion 15 of the groove 13 of the winding shaft member 10 is located at a relatively far position from the rotation axis AX1 in the side portion 35 of the protrusion 33, the winding shaft member and the end member It is possible to provide a winding device that can efficiently suppress rattling in the rotation direction. Of course, the present technology includes a case where the convex portion 40 is located closer to the outer groove 37 than the top surface 34.

When the height corresponding to the position in the axial direction D 1 is h, the height of the convex portion 40 protruding from the side portion 35 of the protrusion 33, the convex portion 40 is the fitting portion 31. There may be an inclined portion 50 in which the height h on the tip 31e side is lower than the height h on the opposite side. Since the convex part 40 which hits the inner side part 15 of the groove | channel 13 of the winding shaft member 10 has the said inclination part 50, it can make it easy to insert the insertion part of an end member in opening of a winding shaft member. Of course, the present technology includes a case where the convex portion 40 does not have the inclined portion 50.

The inclined portion 50 may include first and second

inclined portions

51 and 52. The first inclined portion 51 may be closer to the distal end 31 e of the fitting portion 31 than the second inclined portion 52. An inclination θ1 of the first inclined portion 51 with respect to the rotation axis AX1 may be larger than an inclination θ2 of the second inclined portion 52 with respect to the rotation axis AX1. In this aspect, since the force that the convex portion 40 hits the inner portion 15 of the groove 13 of the winding shaft member 10 can be increased, rattling in the rotation direction between the winding shaft member and the end member can be further suppressed. Can be provided.

The insertion portion 31 may include a plurality of protrusions 33 including first and

second protrusions

33a and 33d that sandwich the rotation axis AX1. On the outer peripheral portion 31o of the fitting portion 31, a protrusion 36 without the protrusion 40 may be formed between the first protrusion 33a and the second protrusion 33d. A plurality of grooves 13 into which the first and

second protrusions

33a and 33d and the protrusion 36 without the protrusion 40 are inserted are formed in the inner peripheral portion 10i of the winding shaft member 10. May be. In this embodiment, the first and

second protrusions

33a and 33d having the protrusions 40 on the side portion 35 sandwich the rotation axis AX1, and the protrusion between the first protrusion 33a and the second protrusion 33d. Since there is no convex part 40 in 36, the winding device which can make shaping | molding of an end member easy can be provided.

(2) Specific examples of the 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, showing the winding device 1 with a back door (tailgate) 104 opened and a part of the vehicle omitted. Yes. The lower part of FIG. 1 shows an enlarged view of the winding device 1 in a state in which a sheet-like member 20 called a tonneau cover or the like is pulled out from the case member 61. An automobile 100 shown in FIG. 1 is a road traveling automobile designed and equipped to be used on a road. A vehicle compartment C1 is formed in front of the rear seat 102, and a cargo compartment 101 is formed after the rear seat 102. It is considered a passenger car. When the protruding portion 26 of the reinforcement member 25 of the sheet-like member 20 pulled out from the case member 61 is hooked on the engaging portion of the rail member 107 of the automobile 100, the cargo compartment 101 can be partitioned up and down. The rail member 107 is on the left and right of the automobile 100, and one protrusion 26 of the reinforcement member 25 is hooked on the engaging portion of the left rail member 107, and the other protrusion 26 of the reinforcement member 25 is on the right side. It is hooked on the locking portion of the rail member 107. In this way, the luggage placed on the cargo floor 108 can be shielded, and the luggage cannot be visually recognized from outside the vehicle, so that a good aesthetics and crime prevention effect can be obtained.

The upper part of FIG. 2 shows an example of the winding device 1 in a state where the holder 62 is not shown and the

plate members

63 and 64 are disassembled. An example of a cross section of the winding device 1 taken along the line AA in the exploded view is shown immediately below the exploded view shown in the upper part of FIG. Furthermore, the example of the side surface of the slide member 72 is shown in the lower part of FIG.
Here, the symbol D 1 indicates the axial direction D 1 of the cylindrical winding shaft member 10. Reference sign D1i indicates the inner side in the axial direction, and reference sign D1o indicates the outer side in the axial direction. A symbol D 21 illustrated in FIG. 1 indicates an accommodation direction that is a direction in which the flexible main body portion 21 of the sheet-like member 20 is accommodated in the case member 61. Reference sign D 22 illustrated in FIG. 1 indicates a drawing direction that is a direction in which the main body portion 21 is drawn from the case member 61. In FIG. 1, the axial direction D 1 is the width direction of the automobile 100, the accommodation direction D 21 is the front direction of the automobile 100, and the drawing direction D 22 is the rear direction of the automobile 100.

The

holders

62A and 62B are assembled to both ends of the case member 61 of the winding device 1 so as to be slidable in the axial direction D1 within a predetermined range. Thereby, the whole winding device 1 can be expanded-contracted in the axial direction D1. By inserting the holders 62 A and 62 B into the recesses provided on the left and right side walls of the cargo chamber 101, the winding device 1 is assembled and fixed to the cargo chamber 101. The

holders

62A and 62B are collectively referred to as the holder 62.

FIG. 3 shows an example of the end portion of the winding device 1 with the sheet-like member 20 omitted and the case member 61 seen through. FIG. 4 illustrates the winding shaft member 10, the end member 30, the shaft member 65, and the plate member 64. FIG. 5 illustrates the end member 30 and the winding shaft member 10 from different angles. FIG. 6 shows an example of the winding shaft member 10. Here, the symbol DR1 indicates the rotation direction of the winding shaft member 10 and the end member 30, and the symbol D2 indicates the radial direction around the rotation axis AX1 of the winding shaft member 10 and the end member 30. 7 and 8 show examples of the end member 30. FIG. 9 shows an example of the positional relationship between the end member 30 and the winding shaft member 10. The winding shaft member 10 is indicated by a two-dot chain line. FIG. 10 shows an example of the positional relationship between the end member 30 and the winding shaft member 10 along the line BB in FIG. The winding shaft member 10 is indicated by a two-dot chain line. In the lower part of FIG. 10, the inclined portion 50 of the end member 30 is shown enlarged.

The take-up shaft member 10 is a long cylindrical member having both ends opened, and is disposed in the case member 61 so as to be rotatable about a rotation axis AX1 along the longitudinal direction (axial direction D1). The take-up shaft member is also called a barrel member or the like. As shown in FIG. 2, end members 30 are attached to both end portions 11 of the winding shaft member 10. Here, the end member 30A is inserted into the opening 12 of one end 11a, and the end member 30B is inserted into the opening 12 of the other end 11b. The

end portions

11a and 11b are collectively referred to as the end portion 11 and the

end members

30A and 30B are collectively referred to as the end member 30. A slide member 72 is inserted into the hollow portion 10 h of the winding shaft member 10.

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 a 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 winding shaft member 10 is non-circular. A plurality of grooves 13 along the axial direction D1 are formed in the inner peripheral portion 10i. For convenience, it is assumed that the grooves 13a to 13f are formed in order at intervals of 60 ° in the rotation direction DR1 about the rotation axis AX1. Each of the grooves 13a to 13f has a bottom surface 14 and a pair of inner portions 15 that sandwich the bottom surface 14. The bottom surfaces 14 of the grooves 13a to 13f are aligned with the substantially circumference of the same virtual 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, the inner portion on one side in the rotational direction DR1 is denoted by reference numeral 15a, and the inner portion on the other side is denoted by reference numeral 15b. The grooves 13a to 13f are collectively referred to as the groove 13, and the

inner portions

15a and 15b are collectively referred to as the inner portion 15. Intermediate ridges 17 are formed between adjacent grooves 13. The number of intermediate protrusions 17 is the same as the number of grooves 13. When the winding shaft member 10 is an extrusion-molded product, the outer peripheral surface 10o and the inner peripheral portion 10i have substantially the same shape over the entire axial direction D1.

Since the six grooves 13a to 13f of this specific example are formed in the same shape and at equal intervals, the groove 13 and the end member of the take-up shaft member 10 are fitted when the take-up shaft member 10 and the end member 30 are fitted together. It is easy to match the relative positions of the 30

protrusions

33 and 36 in the rotational direction DR1. Therefore, the work of attaching the end member 30 to the winding shaft member 10 can be easily performed.

The material of the winding shaft member 10 can be a metal such as aluminum, a synthetic resin such as a thermoplastic resin, or the like. When 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 required strength. The size of the aluminum winding 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 is about 4 to 20 mm, and the outer diameter is about 6 to 30 mm. it can.

1 and 2, the main body portion 21 of the sheet-like member 20 is formed of a flexible sheet-like material that can be wound on the outer peripheral surface 10 o of the winding shaft member 10. The main body portion 21 is made of a flexible material and is preferably a soft material having a light shielding property, but is not limited to an opaque material having a light shielding rate of 100%, and may be a translucent material or the like. The main body portion 21 is preferably a stretch material such as a jersey material that is highly stretchable and hardly wrinkles, but a sheet formed from a resin molding material such as a vinyl chloride resin, a leather using a resin material such as a vinyl chloride resin, Woven fabrics, various mesh materials, and the like can also be used. That is, the concept of sheet-like material includes a mesh-like material, and the concept of sheet-like member includes a mesh-like member. One end 22 of the main body portion 21 is fastened to the outer peripheral surface 10o of the winding shaft member by a fixing means such as a double-sided tape. A reinforcement member 25 that is harder than the main body portion 21 is attached to the front end edge (the other end 23) of the main body portion 21. The reinforcement member 25 can be a plate-shaped member, a rod-shaped member, a cylindrical member, or the like, and can be a molded product such as an injection molded product of synthetic resin. The reinforcement member 25 is formed with projecting

portions

26 and 26 that can be hooked on the engaging portion of the rail member 107 in order to maintain the pulled-out state of the main body portion 21.

2 and the like, the insertion portion 31 of the end member 30 is inserted into the opening 12 of the end portion 11 of the winding shaft member 10. Thereby, the restriction part 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 axial direction D1 and the rotational direction DR1. The end member is also called a rotor, a cap, or the like. The end member 30A attached to one end portion 11a of the winding shaft member 10 is formed with a shaft portion 30d that protrudes toward the axially outer side D1o opposite to the winding shaft member 10. The shaft portion 30d is held so as to be rotatable about the rotation axis AX1 with respect to the bearing portion 63a of the plate member 63 attached to the end portion of the case member 61. A bearing hole 30c penetrating in the axial direction D1 is formed in the end member 30B attached to the other end 11b of the winding shaft member 10. A shaft member 65 is inserted into the bearing hole 30c. That is, the cylindrical end member 30 B functions as a bearing member that is rotatably held around the rotation axis AX 1 with respect to the shaft member 65. 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 end members 30 A and 30 B can rotate about the rotation axis AX 1 by the support portion 60. Supported by Thereby, the sheet-like member 20 can be wound on the outer peripheral surface 10 o of the winding shaft member 10.

As shown in FIG. 8 and the like, the cross-sectional shape of the bearing hole 30c of the end member 30 in a cross section perpendicular to the rotation axis AX1 is substantially circular. On the other hand, the cross-sectional shape of the outer peripheral part 31o of the insertion part 31 is non-circular. A plurality of

protrusions

33 and 36 are formed along the axial direction D1 on the outer peripheral portion 31o. As will be described in detail later, the protrusions 33 are formed with protrusions 40, and the protrusions 36 have no protrusions 40. For convenience, it is assumed that the

ridges

33a, 36b, 36c, 33d, 36e, and 36f are formed in order at 60 ° intervals in the rotation direction DR1 about the rotation axis AX1. Each

protrusion

33a, 36b, 36c, 33d, 36e, 36f has a top surface 34 and a pair of side portions 35 sandwiching the top surface 34. The top surfaces 34 of the

protrusions

33a, 36b, 36c, 33d, 36e, and 36f are aligned with the substantially circumference of the same virtual circle V2 centered on the rotation axis AX1. For convenience, among the pair of side portions 35 of each

protrusion

33a, 36b, 36c, 33d, 36e, 36f, a 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 side. The reference numeral 35b is attached to the inner side of the. The

protrusions

33a and 33d are collectively referred to as the protrusion 33, the

intermediate protrusions

36b, 36c, 36e, and 36f are collectively referred to as the intermediate protrusion 36, and the

side portions

35a and 35b are collectively referred to as the side portion 35. Between the adjacent protrusions, an outer groove 37 is formed along the protrusions. The outer groove 37 formed between the protrusions can be rephrased as an intermediate groove. The number of outer grooves 37 is the same as the number of

ridges

33 and 36.

8 and 9 are the same 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 and 35b extend in the axial direction (D1) of the end member 30. Six combinations of the top surface 34 and the

side parts

35a and 35b are formed in the outer peripheral part 31o at intervals. By inserting the

protrusions

33 and 36 into the groove 13, the end member 30 is attached to the winding shaft member 10 so as to be slidable in the axial direction D1 and non-rotatable in the rotational direction DR1.

The end member 30 can be a molded product such as an injection molded product of synthetic resin. As this synthetic resin, thermoplastic resins such as polyamide, polypropylene (PP), polyacetal (POM), and polybutylene terephthalate (PBT) can be used. 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 pulling out the main body portion 21 of the sheet-like member 20, and forms a space for accommodating the winding shaft member 10 and the wound main body portion 21. Has been.

Plate members

63 and 64 are fixed to both ends of the case member 61, and holders 62 are attached to be slidable in the axial direction D1 within a predetermined range. A compression coil spring (not shown) and a plate member 63 shown in FIG. 2 are inserted into the left holder 62 A together with one end of the winding shaft member 10. A compression coil spring (not shown) and a plate member 64 shown in FIG. 2 and the like are inserted into the right holder 62 B together with the other end of the winding shaft member 10. By these compression coil springs, the

holders

62A and 62B inserted into the recesses on the side wall of the luggage compartment 101 are urged toward the axially outer side D1o.

The plate member 64 shown in FIG. 4 and the like is formed with a star-shaped star hole 64a into which the star-shaped portion 65a of the shaft member 65 is inserted, and an engagement hole 64b into which the screw 66 is inserted. For example, a portion of the plate member 64 facing the end of the case member 61 is fitted into the opening of the end of the case member 61, the screw 66 is inserted into the engagement hole 64b, and a fastening member (not shown) (for example, a 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 about the rotation axis AX1. The plate member 63 inserted into the holder 62A is positioned in the same manner as the plate member 64. The end member 30A is supported to be rotatable about the rotation axis AX1 with respect to the plate member 63 positioned on the holder 62A. That is, the plate member 63 is a main part of the support part 60 with respect to the end member 30A having the shaft part 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 main body portion 65c inserted into the bearing hole 30c of the end member 30B. The cross-sectional shape of the outer peripheral surface of the main body 65c in the cross section perpendicular to the rotation axis AX1 is substantially circular. The outer diameter of the main 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 of the plate member 64 positioned in the holder 62B and the star-shaped portion 65a, the shaft member 65 is disposed so as not to rotate about the rotation axis AX1. The end member 30B functions as a bearing member and is supported so as to be rotatable about the rotation axis AX1 with respect to the main body portion 65c of the shaft member 65 fitted to the plate member 64 positioned in the holder 62B. That is, the shaft member 65 becomes a main part of the support part 60 with respect to the end member 30B having the bearing hole 30c.

The shaft member 65 can be a molded product such as a synthetic resin injection molded product. As this synthetic resin, a thermoplastic resin such as polyamide, PP, POM, or PBT can be used. Additives such as reinforcing fibers may be added to these resins.

The urging portion 70 that urges the winding shaft member 10 in the rotation direction DR1 includes a spring (elastic member) 71 and a slide member 72 inserted into the hollow portion of the winding shaft member 10. The spring 71 shown in FIG. 2 is a coil spring, and one end 71 a is attached to the slide member 72, and the other end 71 b is attached to the main body 65 c of the shaft member 65. The coil spring is also called a coil spring, a helical spring, or the like. On the outer peripheral portion 72o of the slide member 72 shown in FIG. 2, six ridges 72a are formed in accordance with the grooves 13a to 13f of the winding shaft member 10. By inserting each protrusion 72a into the groove 13, the slide member 72 is slidable in the axial direction D1 with respect to the take-up shaft member 10, and is not relatively movable in the rotational direction DR1. To fit. Therefore, when the main 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 71a of the spring 71 rotate in the winding direction together with the winding shaft member 10 and the like. Further, when pulling out the main body portion 21 of the sheet-like member 20, the slide member 72 and the end 71a of the spring 71 rotate in the direction opposite to the winding direction together with the winding shaft member 10 and so on, Energizing power increases. Since the slide member 72 slides in the axial direction D1 with respect to the take-up shaft member 10 according to the expansion and contraction of the spring 71 when the take-up shaft member 10 and the like rotate, Contact with the inner peripheral portion 10i is suppressed, and generation of abnormal noise due to this contact is suppressed. In order to further suppress the generation of abnormal noise, a soundproof tube may be inserted between the spring 71 and the winding shaft member 10.

By the way, when 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 is difficult for the end member 30 to come off, it is difficult to insert the end member insertion portion 31 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 backlash 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 is increased, and a difference outside the allowable limit is caused when the sheet-like member 20 is operated or the vehicle is running. Sound may be generated, and the end member 30 may drop off from the winding shaft member 10.
In the present technology, by forming a protrusion 40 (see, for example, FIG. 7) on the protrusion 33 of the end member 30, the end member 30 is held on the end 11 of the winding shaft member 10, and the winding shaft member The insertion portion 31 of the end member 30 is inserted into the 10 openings 12.

7 to 9 show an end member 30B having a bearing hole 30c. The end member 30 B includes a fitting portion 31 that is fitted into the opening 12 of the end portion 11 of the winding shaft member 10 and a regulation portion 32 that is thicker than the fitting portion 31 and does not enter the opening 12. As shown in FIGS. 6, 8, and 9, the

protrusions

33 and 36 of the fitting portion 31 are a top surface 34 that faces the bottom surface 14 of the groove 13 of the winding shaft member 10, and a side that faces the inner portion 15 a of the groove 13. It has the side part 35b which opposes the part 35a and the inner part 15b of the groove | channel 13. FIG. In other words, the groove 13 of the winding shaft member 10 has an inner portion 15 a that faces the side portion 35 a of the

ridges

33 and 36 and an inner portion 15 b that faces the side portion 35 b of the

ridges

33 and 36. Further, the intermediate protrusion 17 of the groove 13 of the winding shaft member 10 is inserted into the outer groove 37 of the fitting portion 31.

The regulating part 32 has a plurality of lightening parts 32a for reducing the amount of resin. The cross-sectional shape of the outer peripheral surface of the restricting portion 32 is substantially circular. When the end member 30 B is inserted into the opening 12 of the end portion 11 b of the winding shaft member 10, the end wall 30 B is positioned by abutting the regulation wall 32 b formed on the regulation portion 32 against the end surface of the winding shaft member 10. Although not shown, the end member 30A having the protruding shaft portion 30d also has the same insertion portion and restriction portion. 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 main body portion 65c of the shaft member 65 is inserted into the bearing hole 30c of the end member 30B. Thereby,

end member

30A, 30B and the winding shaft member 10 are supported with respect to the plate member 63 and the shaft member 65 so that rotation is possible centering | focusing on rotating shaft AX1.

It is designed such that a very small constant gap is formed between the

side portions

35a, 35b of the protrusion 33 of the end member 30 and the

inner portions

15a, 15b of the groove 13 of the winding shaft member 10. Yes. Thereby, the frictional force between the inner peripheral portion 10i and the outer peripheral portion 31o is not excessive, and the work of attaching the end member 30 to the winding shaft member 10 can be easily performed. Further, in order to suppress rattling in the rotational direction DR1 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, the convex portion 40 is formed on the side portion 35 of the protrusion 33. Is forming. 7 to 10 and the like are partially formed with respect to the side portion 35, are convex toward the opposed inner portion 15, and come into contact with the inner portion 15. Moreover, as shown in FIG. 8, the convex part 40 is formed in the side part 35 so that it may not come out of the virtual circle V2 fitted to the top surface 34. As shown in FIG. The convex portion 40 of this specific example is partially formed with respect to the side portion 35 in the axial direction D1. The insertion portion 31 shown in FIG. 8 and the like has a first protrusion 33a and a second protrusion 33d sandwiching the rotation axis AX1 as the protrusion-equipped protrusion 33. In addition, the intermediate protrusion 36 without the convex part 40 is formed in the outer peripheral part 31o of the insertion part 31 between the 1st protrusion 33a and the 2nd protrusion 33d.

8 and the like are formed on both

side portions

35a and 35b of the first protrusion 33a and both

side portions

35a and 35b of the second protrusion 33d. As shown in FIGS. 7 and 10, the convex portion 40 is intermittently formed at two locations in the side portion 35 in the axial direction D1. Of course, the number of convex portions is not particularly limited. For example, the number of the convex portions 40 in the axial direction D1 may be one or may be three or more. Further, the number of ridges forming the convex portion is not particularly limited. For example, some or all of the

intermediate ridges

36b, 36c, 36e, and 36f may be replaced with the ridge 33 having the convex portions 40.

10 or the like is designed to interfere with the 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 winding shaft member 10. When the resin end member 30 is attached to the metal winding shaft member 10, the convex portion 40 softer than the winding shaft member 10 is deformed so as to be crushed. Thereby, about the axial direction D1, the relative movement of the end member 30 with respect to the winding shaft member 10 is suppressed by an appropriate frictional force acting on the inner portion 15 of the groove 13 and the side portion 35 of the protrusion 33. . Further, the convex portion 40 is formed not on the top surface 34 of the ridge 33 but on the side portion 35 of the ridge 33. For this reason, about the rotation direction DR1, rattling to the rotation direction DR1 of the winding shaft member 10 and the end member 30 is suppressed because the deformed convex part 40 abuts against the inner part 15 of the groove 13. . In this specific example, when the protrusions 40 are intermittently formed in the side part 35 at two locations in the axial direction D1, the insertion part 31 of the end member 30 is inserted into the opening 12 of the winding shaft member 10. Is preferably suppressed, and the end member 30 is preferably prevented from coming off from the winding shaft member 10.

8 or the like is formed at a position closer to the top surface 34 than the outer groove 37 in the side portion 35 of the ridge 33. Since the convex part 40 which hits the inner part 15 of the groove 13 of the winding shaft member 10 is located at a position relatively far from the rotation axis AX1 in the side part 35 of the protrusion 33, the rotation between the winding shaft member 10 and the end member 30 is performed. Shaking in the direction DR1 is efficiently suppressed. In particular, the convex portion 40 of this specific example is formed on the side portion 35 at a position that is flush with the top surface 34 or at a position close to the top surface 34. Thereby, the rotational moment which the convex part 40 receives from the inner side part 15 of the groove | channel 13 at the time of rotation operation of the winding shaft member 10 and the end member 30 becomes near the maximum, and shakiness of the rotation direction DR1 is suppressed effectively. .

Also, the convex portion 40 formed on one side 35a of the ridge 33 and the convex portion 40 formed on the other side 35b of the ridge 33 are at substantially the same distance from the rotation axis AX1. For this reason, rattling in the rotation direction DR1 is further effectively suppressed.

Here, as shown in FIG. 10, the height corresponding to the position in the axial direction D 1 is the height at which the convex portion 40 protrudes from the side portion 35 of the protrusion 33. The convex part 40 shown in FIG. 10 and the like has an inclined part 50 in which the height h = h1 on the tip 31e side of the fitting part 31 is lower than the height h = h2 on the opposite side. The inclined portion 50 of this specific example is formed in a tapered shape in which the height h decreases as it approaches the tip 31 e of the fitting portion 31. For this reason, it is easy to insert the fitting portion 31 of the end member 30 into the opening 12 of the winding shaft member 10, and the end member 30 is automatically centered during insertion. In addition, since the interference between the inner portion 15 of the groove 13 and the convex portion 40 is maximized when the insertion portion 31 is inserted to the innermost portion of the opening 12, the end member 30 is difficult to be removed from the winding shaft member 10.

Further, the inclined portion shown in FIG. 10 and the like includes a first inclined portion 51 having an inclination θ1 with respect to the rotation axis AX1 and a second inclined portion 52 having an inclination θ2 with respect to the rotation axis AX1. Here, 0 <θ1 <90 °, 0 <θ2 <90 °, and θ2 ≠ θ1, and the first inclined portion 51 is closer to the distal end 31e of the fitting portion 31 than the second inclined portion 52. The inclinations θ1 and θ2 of the first and second

inclined portions

51 and 52 in this specific example are θ1> θ2. Thereby, compared with the case where θ1 = θ2, the range in which the inner portion 15 of the groove 13 and the convex portion 40 interfere with each other in the axial direction D1 is widened, and the force with which the convex portion 40 hits the inner portion 15 of the groove 13 is increased. Further, rattling of the winding shaft member 10 and the end member 30 in the rotational direction DR1 is further suppressed.

Further, the end member 30 shown in FIGS. 7 and 8 is an injection molded product formed by injecting a resin material into a cavity formed by a pair of closed molds, and is formed at a boundary portion between the molds. It has a parting line P1. The parting line P1 is formed along the rotation axis AX1 through the top surface 34 of the

protrusions

33a and 33d having the convex portions 40, and is formed at an intermediate portion of the top surface 34 in the rotation direction DR1. The parting line P 1 is not formed on the intermediate ridge 36 without the convex portion 40. Further, the side portion adjacent to the protruding protrusion 33 among the

side portions

35a and 35b of the intermediate protrusion 36 has an inclination with respect to the radial direction D2 so as not to have an undercut shape as an injection molded product. Has also been enlarged. Here, “the inclination with respect to the radial direction D2” is simply referred to as an inclination. In this specific example, the inclination of the side portion 35b is larger than the inclination of the side portion 35a for the intermediate protrusion 36b, and the inclination of the side portion 35a is larger than the inclination of the side portion 35b for the intermediate protrusion 36c. For 36e, the inclination of the side part 35b is larger than the inclination of the side part 35a, and for the intermediate protrusion 36f, the inclination of the side part 35a is larger than the inclination of the side part 35b. That is, the intermediate protrusion 36 has a left-right asymmetric cross-sectional shape.

The end member 30 having the parting line P1 as described above does not have an undercut shape as an injection molded product. Thereby, a shaping | molding die can be opened on the parting line P1 as a boundary. Therefore, in this specific example, the end member 30 with the convex portion can be integrally formed and die-cut without a complicated mold configuration such as setting a slide mold separately, and the molding cost can be reduced.

The winding device 1 can be assembled as follows, for example. Of course, the assembly order can be changed as appropriate.
First, the main body portion 65c of the shaft member 65 is inserted into the bearing hole 30c of the end member 30B, one end portion 71a of the spring 71 is attached to the slide member 72, and the other end portion 71b of the spring 71 is connected to the main body of the shaft member 65. It attaches to the part 65c. Further, the slide member 72 is inserted into the hollow portion 10 h of the winding shaft member 10, and the fitting portion 31 of the end member 30 B is inserted into the opening 12 of the end portion 11 b of the winding shaft member 10. Furthermore, the insertion portion of the end member 30 A is inserted into the opening 12 of the end portion 11 a of the winding shaft member 10. Further, the body portion 21 of the sheet-like member 20 is wound around the take-up shaft member 10, and the take-up shaft member 10 and the like are put into the case member 61 in a state where the reinforcement member is taken out from the outlet 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 63a, and the shaft member 65 is inserted into the star-shaped hole 64a of the plate member 64 in a state where a winding force is applied to the sheet-like member 20. A holder 62 B is attached to the other end of the case member 61 so that the star-shaped portion 65 a is inserted.

As described above, the convex portion 40 of the side portion 35 of the protrusion 33 formed on the outer peripheral portion 31 o of the fitting portion 31 of the end member 30 is the groove 13 formed on the inner peripheral portion 10 i of the winding shaft member 10. It faces the inner part 15 facing each other. The relatively soft convex portion 40 is deformed so as to be crushed, and generates an appropriate frictional force between the inner portion 15 of the groove 13 and the side portion 35 of the protrusion 33. Thereby, it is suppressed that the end member 30 moves from the winding shaft member 10 to the axial direction D1. Further, in this specific example, since the convex portion 40 is partially formed in the axial direction D1 with respect to the side portion 35, the load for inserting the fitting portion 31 of the end member 30 into the opening 12 of the winding shaft member 10 Can be preferably suppressed, and the end member 30 is preferably prevented from coming off from the winding shaft member 10. Furthermore, when the deformed convex portion 40 abuts against the inner portion 15 of the groove 13, rattling of the winding shaft member 10 and the end member 30 in the rotational direction DR 1 is suppressed. As a result, the generation of noise due to the rattling during the operation of pulling out or winding up the main body portion 21 of the sheet-like member 20 is suppressed, and the generation of noise due to the rattling during driving of the automobile is suppressed. Is done.

(3) Modification:
Various modifications can be considered for the present invention.
In addition to the tonneau cover device, the winding device may be a sunshade device, a partition device that partitions the interior of the vehicle in the front-rear direction, and the like. The sunshade device can be installed on a side window, a rear window, a roof window, a front window, and the like. The drawing direction of the sheet-like member may be upward, downward, leftward, rightward, forward, etc. in addition to the rear.
The spring that can be used for the urging portion may be a spiral spring, an elastic member formed of an 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 in the axial direction from the end member in addition to the inside of the take-up shaft member. The urging unit may be an electric type or the like other than a mechanical type using an elastic member such as a spring.
The shaft member 65 and the plate member 64 may be fitted with a combination of a portion having a polygonal cross section such as a quadrangular cross section and a hole having the same shape as the combination of the star portion 65a and the star hole 64a.
The support part of the end member may be provided directly on the interior material of the automobile. For example, when 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 relative 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. Further, when a protruding portion similar to the main body portion 65c of the shaft member 65 is formed in the interior material, the end member 30B rotates with respect to the interior material by inserting the protruding portion of the interior material into the bearing hole 30c of the end member 30B. 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 in addition to being formed in the take-up shaft member 10 throughout the axial direction D1.
The combinations of the grooves 13 and the protrusions 33 may be arranged at non-uniform intervals in addition to being arranged at equal intervals around the rotation axis AX1. The number of grooves 13 formed in the take-up shaft member may be one in addition to six, two to five, or seven or more. In addition to the two protrusions 33 formed on the end member insertion portion, one or three or more may be used. In addition to the four protrusions 36, the protrusion-free protrusions 36 formed in the insertion portion may be one, two, three, or five or more. Of course, this technique also includes a case in which the protrusion does not have a protrusion-less protrusion.
In addition to being formed on both

side portions

35a and 35b of the ridge 33, the convex portion 40 may be formed only on the side portion 35a without being formed on the side portion 35b, or on the side portion 35a. You may form only in the side part 35b. In addition to the inclined portion 50, the convex portion 40 may have a portion along the rotation axis AX1. The inclined portion 50 may include a third inclined portion having a different inclination from the first and second

inclined portions

51 and 52.

Moreover, when the convex part 40 is intermittently formed in the side part 35 in the axial direction D1, the convex part on the tip 31e side of the fitting part 31 of the end member 30 is more axially D1 than the convex part on the regulation wall 32b side. It may be long. This modification can improve the operability of the operation of attaching the end member 30 to the winding shaft member 10 by adjusting the length of the convex portion 40 in the axial direction D1.

FIG. 11 shows a modification of the end member 30B (30). This end member 30B is used instead of the end member 30B shown in FIG. Since parts other than the end member 30B in the winding device 1 can use the parts shown in FIGS. 1 to 10, description thereof will be omitted.
A top surface 34 of the protrusion 36 of the fitting portion 31 of the end member 30B shown in FIG. 11 is convex toward the outside in the radial direction D2 (see FIG. 9) and hits the bottom surface 14 of the groove 13 of the winding shaft member 10. A second convex portion 42 is formed. Here, the second convex portion 42 is intermittently formed on the top surface 34 in the axial direction D1, and the second convex portion on the distal end 31e side of the fitting portion 31 of the end member 30 is on the regulating wall 32b side. It is made longer in the axial direction D1 than the second convex portion. In this modification, the operability of the operation of attaching the end member 30 to the winding shaft member 10 can be improved by adjusting the length of the second convex portion 42 in the axial direction D1. However, the load for inserting the fitting portion 31 of the end member 30 into the opening 12 of the winding shaft member 10 is increased by the frictional force between the top surface 34 and the bottom surface 14 as compared with the specific examples shown in FIGS. Further, since the second convex portion 42 has an undercut shape as an injection-molded product, a complicated mold structure such as setting a slide mold separately is required. Compared to the specific examples shown in FIGS. Cost increases. Of course, the use of the end member 30B shown in FIG. 11 is also included in the present technology, and an effect capable of suppressing the rattling of the winding shaft member 10 and the end member 30 in the rotation direction DR1 is obtained.

In addition, if there is a winding shaft member having a groove and an end member having a protrusion with a protrusion inserted into the groove, the basic effect of the present invention can be obtained even in a winding device without a biasing portion or the like. can get.
The basic effect of the present invention can be obtained even with a winding device in which the end member 30A having the shaft portion 30d does not have the protrusion 33 with the protrusion and the end member 30B having the bearing hole 30c has the protrusion 33 with the protrusion. . In this case, the plate member 63 is a main part of the support part 60. The groove 13 may not be provided in the end portion 11a of the winding shaft member 10.
The basic effect of the present invention can be obtained even with a winding device in which the end member 30B having the bearing hole 30c does not have the protrusion 33 with the protrusion and the end member 30A having the shaft portion 30d has the protrusion 33 with the protrusion. . In this case, the shaft member 65 is a main part of the support part 60. The groove 13 may not be provided in the end portion 11b of the winding shaft member 10.

(4) Conclusion:
As described above, according to the present invention, it is possible to provide a technique such as a winding device that can suppress rattling of the winding shaft member and the end member in the rotation direction according to various aspects. Needless to say, the above-described basic actions and effects can be obtained even with a technique that does not have the constituent elements according to the dependent claims but includes only the constituent elements according to the independent claims.
In addition, the configurations disclosed in the embodiments and modifications described above are mutually replaced, the combinations are changed, the known technology, and the configurations disclosed in the embodiments and modifications described above are mutually connected. It is possible to implement a configuration in which replacement or combination is changed. The present invention includes these configurations and the like.

Claims

A cylindrical winding shaft member in which a groove along the axial direction is formed in the inner periphery;
A protrusion to be inserted into the groove is formed on the outer peripheral portion, and has a fitting portion that is fitted into the opening of the end portion of the winding shaft member, and the rotating shaft of the winding shaft member is centered with respect to the support portion. An end member rotatably supported, and
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 an inner part that faces the side part of the protrusion,
At least one of the pair of side portions is a winding device that has a convex portion that protrudes toward the opposed inner portion and hits the inner portion.
The insertion portion has an outer groove along the protrusion,
The winding device according to claim 1, wherein a convex portion on a side portion of the protrusion is located closer to the top surface than the outer groove.
When the height corresponding to the position in the axial direction is h, the height of the protruding portion relative to the side of the protrusion is h, and the height of the protruding portion is the height on the tip side of the fitting portion. The winding device according to claim 1 or 2, wherein h has an inclined portion that is lower than the height h on the opposite side.
The inclined portion includes first and second inclined portions;
The first inclined portion is closer to the distal end side of the fitting portion than the second inclined portion;
The winding device according to claim 3, wherein an inclination of the first inclined portion with respect to the rotation axis is larger than an inclination of the second inclined portion with respect to the rotation axis.
The insertion portion has a plurality of the protrusions including first and second protrusions sandwiching the rotation shaft,
On the outer periphery of the fitting portion, a ridge without the convex portion is formed between the first ridge and the second ridge,
A plurality of the grooves into which the first and second protrusions and the protrusions without the protrusions are inserted are formed in an inner peripheral portion of the winding shaft member. Item 5. The winding device according to any one of Items 4.