JP6657431B2 - Vehicle winding device and manufacturing method thereof - Google Patents

Description

  The present invention relates to a vehicle winding device installed in an automobile or the like, and a method for manufacturing the same.

  2. Description of the Related Art In a luggage compartment of an automobile, a tonneau cover device may be provided to cover an upper portion of the luggage compartment with a flexible tonneau cover (an example of a sheet-like member). In addition, a sunshade device is provided in a vehicle door or the like in order to block direct sunlight with a flexible sunshade (an example of a sheet-like member) for anti-glare, or to ensure privacy inside the vehicle with a sunshade. Sometimes. Winding devices such as a tonneau cover device and a sunshade device include, for example, a winding shaft for fixing a base end portion of a sheet-shaped member, a spring for biasing the winding shaft in a direction for winding the sheet-shaped member, and a sheet-shaped member. , A case having an outlet for the above. In this case, the sheet member can be pulled out of the case when used, and the sheet member can be wound up and stored in the case when not in use.

  In the sheet-like member of the tonneau cover device disclosed in Japanese Patent Application Laid-Open No. 2014-169595, a plurality of insertion holes for passing the winding shaft are formed at positions aligned in the direction of passing the winding shaft. A double-sided adhesive tape is attached to a portion of the sheet-like member closer to the storage side than the plurality of insertion holes. In the circumferential direction of the winding shaft, the double-sided adhesive tape is shorter than the outer circumference of the winding shaft.

JP 2014-169595 A

In the above-mentioned tonneau cover device, it is necessary to form a plurality of insertion holes for passing the winding shaft in the sheet-like member, and the structure of the winding device is complicated. However, when the base end of the sheet-like member is adhered to the winding shaft with the double-sided adhesive tape without forming such a complicated structure, the base end of the sheet-like member may peel off from the outer peripheral surface of the winding shaft. Need to be considered.
The above-described problem also exists in a winding device other than the tonneau cover device, such as a sunshade device.

  The present invention discloses a technique for improving the bonding strength of the base end of a sheet-like member to the outer peripheral surface of a winding shaft with a simple structure.

The vehicle winding device of the present invention includes a sheet-shaped member, a winding shaft for winding the sheet-shaped member so that the sheet-shaped member can be pulled out,
A double-sided adhesive tape having a base end along the winding shaft in the sheet-like member adhered to an outer peripheral surface of the winding shaft,
The double-sided pressure-sensitive adhesive tape is wound longer than one turn around the outer peripheral surface of the winding shaft, and the overlapping portion where the outer pressure-sensitive adhesive surface of the double-sided pressure-sensitive adhesive tape is adhered to the inner pressure-sensitive adhesive surface of the double-sided pressure-sensitive adhesive tape is the double-sided tape. Formed on adhesive tape,
In a preferred embodiment, a base end of the sheet-shaped member is attached to at least the outside of the overlapping portion.

Further, the present invention is a method for manufacturing a vehicle winding device having a sheet-shaped member, and a winding shaft for winding the sheet-shaped member so that the sheet-shaped member can be pulled out,
The first adhesive surface of the double-sided adhesive tape, which is longer than the outer periphery of the winding shaft in the drawing direction of the sheet-like member, protrudes from the base end with respect to the base end of the sheet-shaped member along the winding shaft. A first attaching step of attaching and attaching,
Of the second adhesive surface opposite to the first adhesive surface of the double-sided adhesive tape, a first portion protruding from the base end, and a second portion continuous from the first portion and not protruding from the base end. Attaching directly to the outer peripheral surface of the winding shaft, a second attaching step of attaching the remaining third portion continuous from the second portion to a portion of the first adhesive surface protruding from the base end portion, Including, embodiments.

  ADVANTAGE OF THE INVENTION According to this invention, the technique which improves the adhesive strength of the base end part of a sheet-like member with respect to the outer peripheral surface of a winding shaft with a simple structure can be provided.

FIG. 1 is a perspective view schematically showing an example of a winding device mounted on an automobile. FIG. 2 is an exploded view showing an example of a winding device. FIG. 3 is an exploded perspective view illustrating a barrel member, an end member, a shaft member, and a plate member. FIG. 4 is an exploded perspective view illustrating the end member and the barrel member from another angle. FIG. 5 is a side view schematically showing an example in which a double-sided adhesive tape is attached to a sheet-like member. FIG. 6 is a diagram schematically illustrating an example of the back side of the sheet-like member to which the double-sided adhesive tape is attached. FIG. 7 is a cross-sectional view schematically illustrating an example of a cross-section of a sheet-shaped member to which a double-sided adhesive tape is attached. FIG. 8 is a diagram schematically illustrating an example of a method of manufacturing the winding device. FIG. 9 is a side view schematically illustrating an example of a winding device. FIG. 10 is a diagram schematically illustrating a comparative example of a method of manufacturing a winding device. FIG. 11 is a side view schematically illustrating a comparative example of the winding device.

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

(1) Outline of technology included in the present invention:
First, the outline of the technology included in the present invention will be described with reference to the examples shown in FIGS. It should be noted that the drawings of the present application are diagrams schematically showing examples, and the enlargement ratios in the respective directions shown in these drawings may be different, and the respective drawings may not match. Of course, each element of the present technology is not limited to a specific example indicated by a reference numeral.

[Comparative example]
FIG. 10 shows, as a comparative example of a method of manufacturing a vehicle winding device, a base end portion 22 of a main body portion 21 of a sheet-like member 20 on the outer peripheral surface 10 o of a barrel member 10 which is a main body portion of a winding shaft 2. The state of bonding with a tape 40 is schematically illustrated. The lead-out end 26 of the sheet-like member 20 has a reinforcement member 25, and the main body portion 21 of the sheet-like member 20 is connected to the reinforcement member 25. For convenience, the outer side of the main body portion 21 when it is wound around the barrel member 10 will be referred to as the front side 21a, and the inner side will be referred to as the back side 21b. The length La of the double-sided pressure-sensitive adhesive tape 40 in the drawing direction D22 of the sheet member 20 is slightly shorter than the outer peripheral length Lc of the barrel member 10. Therefore, the double-sided adhesive tape 40 does not overlap the front side 21a of the main body 21. For example, when the barrel member 10 is made of aluminum and the main body portion 21 is made of a vinyl chloride resin, the adhesive strength between the barrel member 10 and the double-sided adhesive tape 40 is about 20 to 30 ° C. This is because the adhesive strength between the adhesive and the double-sided adhesive tape 40 is higher. The portion of the main body 21 that adheres to the outer peripheral surface 10o of the barrel member 10 extends from the adhesive end 22a in the pull-out direction D22 to the adhesive end 22e in the housing direction D21.

  The first adhesive surface 41 of the double-sided adhesive tape 40 is attached to the back side of the base end portion 22 of the sheet-like member 20, and the second adhesive surface 42 of the double-sided adhesive tape 40 is attached to the end 44, that is, the adhesive end 22 e of the main body portion 21. FIG. 10 shows a state where the outer peripheral surface 10o of the barrel member 10 is applied from the side. In this state, when the barrel member 10 is rotated around the rotation axis AX1 in the circumferential direction D10 so as to wind the main body portion 21 of the sheet-like member 20, when the winding device 901 illustrated in FIG. Is adhered to the outer peripheral surface 10 o of the barrel member 10, and the base end portion 22 of the sheet-like member 20 is fixed to the outer peripheral surface 10 o of the barrel member 10. It should be noted that the thickness of the main body portion 21 of the sheet-like member 20 and the thickness of the double-sided adhesive tape 40 shown in FIGS. Therefore, the thickness of the actual main body portion 21 and the thickness of the double-sided adhesive tape 40 may be different from the thickness shown in FIGS.

  Here, the inside of the vehicle may become hot, such as parking during midsummer. When the winding device 901 in a state where the sheet-shaped member 20 is pulled out is heated to a high temperature, the adhesive of the double-sided adhesive tape 40 is softened, and the outer peripheral surface 10o of the barrel member 10 and the base end 22 of the sheet-shaped member 20 are bonded. The strength may decrease. Then, as shown in FIG. 11, there is a possibility that the end 43 on the drawer side of the double-sided adhesive tape 40 is peeled from the outer peripheral surface 10 o of the barrel member 10 by being pulled by the adhesive end 22 a of the main body portion 21. However, for example, when a groove for fixing the base end of the sheet-shaped member is formed on the outer peripheral surface of the barrel member and the base end of the sheet-shaped member is fitted into the groove, the shape of the barrel member becomes complicated, and the barrel becomes complicated. This leads to an increase in parts cost, such as an increase in the weight of members and the like. Therefore, it is desired to provide a technique for improving the adhesive strength of the sheet member to the outer peripheral surface of the winding shaft with a simple structure.

[Aspect 1]
As illustrated in FIG. 9 and the like, the vehicle winding device according to an embodiment of the present technology includes a sheet-shaped member 20, a winding shaft 2 for winding the sheet-shaped member 20 so that the sheet-shaped member 20 can be pulled out, and the sheet And a double-sided adhesive tape 40 in which a base end 22 along the winding shaft 2 of the shaped member 20 is adhered to an outer peripheral surface 10o of the winding shaft 2. The double-sided adhesive tape 40 is wound longer than one turn around the outer peripheral surface 10o of the winding shaft 2, and the outer adhesive surface 51 of the double-sided adhesive tape 40 and the inner adhesive surface 52 of the double-sided adhesive tape 40 are attached. The attached overlapping portion 53 is formed on the double-sided adhesive tape 40. The base end 22 of the sheet-like member 20 is attached to at least the outside of the overlapping portion 53.

  As a result of a test in a high-temperature environment, when the base end portion 22 of the sheet-shaped member 20 is stuck at least outside the overlapping portion 53, the base end portion of the sheet-shaped member 20 with respect to the outer peripheral surface 10o of the winding shaft 2 It was found that the adhesive strength of No. 22 was dramatically improved. This is because the outer double-sided adhesive tape 40 and the inner double-sided adhesive tape 40 are firmly adhered to each other at the overlapping portion 53, so that the outer end 43 of the double-sided adhesive tape 40 on the outer side is the adhesive end of the main body portion 21. It is considered that even when pulled by 22a, it is retained by the inner double-sided adhesive tape 40.

  Further, in order to improve the adhesive strength of the sheet member 20 to the outer peripheral surface 10o of the winding shaft 2, it is not necessary to form the winding shaft 2 or the like into a complicated shape, and an increase in the weight of the winding shaft 2 or the like is suppressed. Is done. Therefore, the first aspect can provide a vehicle winding device in which the adhesive strength of the base end of the sheet-shaped member to the outer peripheral surface of the winding shaft is improved with a simple structure.

  Here, the sheet-like member wound by 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.

[Aspect 2]
In the circumferential direction D <b> 10 of the winding shaft 2, the length of the portion where the double-sided adhesive tape 40 is stuck to the base end portion 22 of the sheet-shaped member 20 is La, and the length of the overlapping portion 53 of the double-sided adhesive tape 40 is Is Lb, and the outer peripheral length of the winding shaft 2 is Lc.
La <Lc <La + Lb
May be. In this embodiment, the overlapping portion 53 of the double-sided pressure-sensitive adhesive tape 40 is formed without overlapping the base end 22 to which the double-sided pressure-sensitive adhesive tape 40 is attached in the sheet-shaped member 20. Therefore, according to this aspect, it is possible to provide a suitable winding device in which the adhesive strength of the base end portion of the sheet member to the outer peripheral surface of the winding shaft is improved.
Here, when the outer shape of the cross section of the winding shaft 2 is circular, the outer peripheral length Lc of the winding shaft 2 is a length obtained by multiplying the diameter of the winding shaft 2 by π (about 3.14).

[Aspect 3]
Meanwhile, the manufacturing method according to one embodiment of the present technology includes a sheet-shaped member 20 and a winding shaft 2 for winding the sheet-shaped member 20 so as to be drawn out, as illustrated in FIGS. This is a method for manufacturing a vehicle winding device, and includes a first attaching step ST1 and a second attaching step ST2. In the first attaching step ST1, both sides of the sheet-shaped member 20 that are longer than the outer periphery of the winding shaft 2 in the drawing direction D22 of the sheet-shaped member 20 with respect to the base end portion 22 along the winding shaft 2. The first adhesive surface 41 of the adhesive tape 40 sticks out of the base end portion 22. In the second sticking step ST2, of the second adhesive surface 42 of the double-sided adhesive tape 40 opposite to the first adhesive surface 41, the first portion 421 protruding from the base end portion 22, and the first portion 421 A second portion 422 that is continuous from the base end portion 22 and is not directly protruded from the base end portion 22 is directly adhered to the outer peripheral surface 10o of the winding shaft 2, and the remaining third portion 423 that is continuous from the second portion 422 is adhered to the first adhesive. The surface 41 is attached to a portion protruding from the base end portion 22 (for example, a protruding portion 412).

  When a test was performed in a high-temperature environment, when the third portion 423 of the second adhesive surface 42 of the double-sided adhesive tape 40 was attached to a portion of the first adhesive surface 41 protruding from the base end portion 22, the winding shaft 2 It was found that the adhesive strength of the base end portion 22 of the sheet member 20 to the outer peripheral surface 10o was dramatically improved. Further, in order to improve the adhesive strength of the sheet member 20 to the outer peripheral surface 10o of the winding shaft 2, it is not necessary to form the winding shaft 2 or the like into a complicated shape, and an increase in the weight of the winding shaft 2 or the like is suppressed. Is done. Therefore, the above aspect 3 can provide a manufacturing method for improving the adhesive strength of the base end portion of the sheet member to the outer peripheral surface of the winding shaft with a simple structure.

(2) Specific examples of the winding device:
FIG. 1 shows an example in which the vehicle winding device 1 is used as a tonneau cover device for a luggage compartment 101 of an automobile 100, in which a back door (tailgate) 104 is opened and a part of the vehicle is not shown, and the winding device 1 is omitted. Is shown. In the lower part of FIG. 1, the winding device 1 in a state where a sheet-like member 20 called a tonneau cover or the like is pulled out from a case member 61 is enlarged. The automobile 100 shown in FIG. 1 is a road traveling automobile designed and equipped to be used on a road, and has a cabin C1 formed before a rear seat 102 and a luggage compartment 101 formed after a rear seat 102. Passenger car. The protrusions 28 of the reinforcement member 25 of the sheet-like member 20 pulled out of the case member 61 can be hooked on the locking portions of the rail members 107 (only the right side is shown) on the left and right sides of the luggage compartment 101. When the drawn-out sheet-like member 20 partitions the luggage compartment 101 up and down, the luggage placed on the luggage compartment floor 108 can be shielded.

  Holders 62, 62 are attached 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. Thus, the entire winding device 1 can be expanded and contracted in the axial direction D1. By fitting the holders 62 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.

The upper part of FIG. 2 shows an example of the winding device 1 in a state where 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, an example of a cross section of the winding device 1 along a cutting line AA in the exploded view is shown, omitting the illustration of a portion behind the exploded view. Further, an example of the side surface of the slide member 72 is shown in the lower part of FIG.
Here, reference numeral D1 shown in FIGS. 1 and 2 indicates an axial direction along the rotation axis AX1 of the long barrel member 10, reference numeral D1i indicates an axial inside, and reference numeral D1o indicates an axial outside. Reference numeral D21 shown in FIGS. 1 and 2 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 FIGS. 1 and 2 indicates a drawing direction in which the main body portion 21 is drawn from the case member 61. 1 and 2, the axial direction D1 is the width direction of the vehicle 100, the accommodation direction D21 is the front direction of the vehicle 100, and the drawing direction D22 is the rear direction of the vehicle 100.

FIG. 3 illustrates the barrel member 10, the end member 30, the shaft member 65, and the plate member 64. FIG. 4 illustrates the end member 30 and the barrel member 10 from another angle.
The barrel member 10 is a cylindrical member having 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 (axial direction D1). As shown in FIG. 2, end members 30 are attached to both end portions 11 of the barrel member 10. Here, the end member 30A is fitted into the opening 12 at one end 11a, and the end member 30B is fitted into the opening 12 at the other end 11b. The end portions 11a and 11b are collectively referred to as an end portion 11, and the end members 30A and 30B are collectively referred to as an end member 30. A slide member 72 is inserted into the hollow portion 10h of the barrel member 10.

  The cross-sectional shape of the outer peripheral surface 10o of the barrel 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 barrel member 10 is non-circular. In the inner peripheral portion 10i shown in FIG. 4, grooves 13 along the axial direction D1 are formed at intervals of 60 ° about the rotation axis AX1. When the barrel 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 axial direction D1.

  As a material of the barrel member 10, a metal such as aluminum, a synthetic resin such as a thermoplastic resin, or the like can be used. The size of the barrel member when aluminum is extruded in a cylindrical shape is not particularly limited, and for example, the outer diameter can be about 6 to 30 mm.

  The body portion 21 of the sheet member 20 shown in FIGS. 1 and 2 is formed of a flexible sheet material that can be wound on the outer peripheral surface 10o of the barrel member 10. The main body portion 21 is made of a flexible material and is preferably made of 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 can be made of a leather using a resin material such as a vinyl chloride resin, a sheet formed of the resin material, an elastic material such as a jersey material, a woven fabric, various mesh materials, and the like. That is, the concept of the sheet material includes a mesh material and the like, and the concept of the sheet member includes a mesh member and the like. The thickness of the main body portion 21 can be, for example, about 0.05 to 2 mm (more preferably, 0.1 to 1 mm). Although details will be described later, the base end portion 22 of the main body portion 21 is fixed to the outer peripheral surface 10o of the barrel member by a double-sided adhesive tape 40 (see FIGS. 5 to 9). A hard reinforcement member 25 having protrusions 28, 28 is attached to a distal end edge (drawing end 24) of the main body portion 21 opposite to the base end portion 22. The reinforcement member 25 is disposed at a drawing end 26 of the entire sheet-like member 20. As the reinforcement member 25, a plate-shaped member, a rod-shaped member, a cylindrical member, or the like can be used, and a molded product such as an injection molded product of a synthetic resin can be used.

  The fitting portion 31 of the end member 30 shown in FIG. 3 and the like is inserted into the opening 12 of the end portion 11 of the barrel member 10. Thus, the restricting portion 32 of the end member 30 covers the opening 12. Note that the end member is also called a rotor, a cap, or the like. The end member 30A attached to the one end 11a of the barrel member 10 is formed with a shaft portion 30d protruding outward in the axial direction D1o. The shaft portion 30d is held rotatably around a rotation axis AX1 with respect to a bearing portion 63a of a plate member 63 attached to an end 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 barrel member 10. The shaft member 65 is inserted into the bearing hole 30c. The end members 30A and 30B are supported by the case member 61, the holder 62, the plate members 63 and 64, and the shaft member 65 so as to be rotatable about the rotation axis AX1, so that the sheet-shaped member 20 becomes an outer periphery of the barrel member 10. It can be wound on the surface 10o.

  The cross-sectional shape of the bearing hole 30c of the end member 30 is substantially circular. The projections 33 on the outer periphery of the fitting portion 31 are formed at intervals of 60 ° about the rotation axis AX1 and are inserted into the grooves 13 of the barrel member 10. Thereby, the end member 30 is non-rotatably attached to the barrel member 10. As the end member 30, a molded product such as an injection molded product of a synthetic resin can be used.

The case member 61 shown in FIG. 1 has an outlet 61a for pulling out the main body portion 21 of the sheet-like member 20, and a space for accommodating the barrel member 10 and the wound main body portion 21 is formed. Plate members 63 and 64 shown in FIGS. 2 and 3 are fixed to both ends of the case member 61, and a holder 62 is attached so as to be slidable in the axial direction D1 within a predetermined range. In the plate member 64 shown in FIG. 3, 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 is formed. The shaft member 65 shown in FIG. 3 has a star 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 is substantially circular. The end member 30B functions as a bearing member, and is supported rotatably about the rotation axis AX1 with respect to the non-rotating main body 65c. A molded product such as an injection molded product of a synthetic resin can be used for the shaft member 65.
Needless to say, the fitting between the shaft member 65 and the plate member 64 is not limited to the combination of the star-shaped portion 65a and the star-shaped hole 64a. May be.

The urging portion 70 that urges the barrel member 10 in a direction in which the barrel member 10 rotates about the rotation axis AX1 has a spring (elastic member) 71 inserted into a hollow portion of the barrel member 10 and a slide member 72. The spring 71 shown in FIG. 2 is a coil spring. 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 slide member 72 is slidable in the axial direction D1 with respect to the barrel member 10 by inserting the respective protrusions 72a of the outer peripheral portion 72o of the slide member 72 shown in FIG. And are fitted so that relative rotation is impossible. Thereby, when the main body portion 21 of the sheet-like member 20 is pulled out, the slide member 72 rotates together with the barrel member 10 and the like, and the urging force of the spring 71 is increased. It is wound around the barrel member 10.
Of course, the spring that can be used for the urging portion is not limited to a coil spring, but may be a spiral spring, an elastic member formed of an elastomer, or the like. The position of the spring is not limited to the inside of the barrel member, but may be outside the barrel member, such as axially outside the end member. The urging unit is not limited to a mechanical type using an elastic member such as a spring, but may be an electric type or the like.

Next, a specific example of a method of manufacturing the winding device 1 will be described with reference to FIGS.
FIG. 5 is a side view schematically illustrating a state in which the double-sided adhesive tape 40 is attached to the sheet member 20. FIG. 6 schematically illustrates a state in which the double-sided adhesive tape 40 is attached to the back side 21 b of the main body portion 21 of the sheet-like member 20. The cross section of the main body part 21 to which the double-sided adhesive tape 40 is attached is schematically illustrated. FIG. 7 schematically illustrates a cross section of the sheet-like member 20 to which the double-sided adhesive tape 40 is attached. FIG. 8 schematically illustrates a state in which the second adhesive surface 42 of the double-sided adhesive tape 40 attached to the base end portion 22 of the main body portion 21 of the sheet member 20 is attached to the outer peripheral surface 10o of the winding shaft 2. are doing. FIG. 9 is a side view schematically illustrating the formed winding device 1. Note that the thickness of the main body portion 21 of the sheet-like member 20 and the thickness of the double-sided adhesive tape 40 shown in FIGS. Therefore, the thickness of the actual main body portion 21 and the thickness of the double-sided adhesive tape 40 may be different from the thickness shown in FIGS. The double-sided adhesive tape is also called an adhesive double-sided tape, a double-sided adhesive tape, a double-sided tape, or the like. A general-purpose product can be used for the double-sided adhesive tape 40. The thickness of the double-sided pressure-sensitive adhesive tape 40 (the support 40a and the pressure-sensitive adhesive layers 40b and 40c shown in FIG. 7) can be, for example, about 0.05 to 2 mm (more preferably 0.1 to 1 mm).

  Also in this specific example, for convenience, the front and back sides of the main body portion 21 will be referred to as the front side 21a, and the inside side will be referred to as the back side 21b when wound around the barrel member 10.

  First, in the first attaching step ST1 shown in FIG. 5, the outer periphery of the barrel member 10 in the pull-out direction D22 with respect to the back side 21b of the base end 22 along the elongated barrel member 10 in the main body portion 21 of the sheet-like member 20. The first pressure-sensitive adhesive surface 41 of the double-sided pressure-sensitive adhesive tape 40 that is longer than (the outer peripheral length Lc) protrudes from the base end portion 22 and is attached. FIGS. 5 and 6 show a state in which the first adhesive surface 41 is attached to the back side 21 b of the main body portion 21.

  Here, of the first adhesive surface 41, a portion attached to the base end portion 22 is referred to as a sticking portion 411, and a portion protruding from the sticking portion 411 in the housing direction D21 is referred to as a sticking portion 412. The portion of the main body portion 21 to which the first adhesive surface 41 is attached extends from the bonding end 22a on the drawing direction D22 side to the bonding end 22e on the housing direction D21 side. When the double-sided adhesive tape 40 is wound around the outer peripheral surface 10o of the barrel member 10, the first adhesive surface 41 becomes the outer adhesive surface 51 that faces outward with the rotation axis AX1 as the center.

  Further, of the second adhesive surface 42 of the double-sided adhesive tape 40 opposite to the first adhesive surface 41, a portion protruding from the base end portion 22 is referred to as a first portion 421, and except for the first portion 421, the barrel member 10 The portion directly attached to the outer peripheral surface 10o is referred to as a second portion 422, and the remaining portion continuous from the second portion 422 in the pull-out direction D22 is referred to as a third portion 423. The second portion 422 of the second adhesive surface 42 is a portion that continues from the first portion 421 in the pull-out direction D22 and does not protrude from the base end portion 22. When the double-sided adhesive tape 40 is wound around the outer peripheral surface 10o of the barrel member 10, the second adhesive surface 42 becomes an inner adhesive surface 52 that faces inward about the rotation axis AX1.

Here, when the length La of the sticking portion 411 in the pull-out direction D22 is shorter than the outer peripheral length Lc, the base portion 22 to which the double-sided adhesive tape 40 is attached does not overlap, and the overlapping portion 53 of the double-sided adhesive tape 40 is formed. Is done. In this case, even if the end 43 on the drawer side of the double-sided adhesive tape 40 is pulled by the adhesive end 22 a of the main body portion 21, it is retained by the inner double-sided adhesive tape 40, so that the base end portion 22 with respect to the outer peripheral surface 10 o of the barrel member 10. The bonding strength is improved.
La <Lc (1)
Further, from the viewpoint of obtaining good adhesive strength of the base end portion 22 to the first adhesive surface 41, the length La of the attaching portion 411 is preferably equal to or more than １ ／ of the outer peripheral length Lc, and is equal to or more than ３ of the outer peripheral length Lc. Is more preferred.

Furthermore, the sum La + Ld of the length Ld of the protruding portion 412 and the length La of the sticking portion 411 in the pull-out direction D22 is longer than the outer peripheral length Lc to form the overlapping portion 53.
Lc <La + Ld (2)
The length Ld itself of the protruding portion 412 is preferably at least 1/10 of the outer peripheral length Lc, more preferably at least 1/6 of the outer peripheral length Lc, from the viewpoint of obtaining good adhesive strength of the base end portion 22 to the outer peripheral surface 10o. . Further, in order to obtain good adhesive strength of the base end portion 22 to the outer peripheral surface 10o while saving the double-sided adhesive tape 40, the length Ld of the protruding portion 412 is preferably equal to or less than the outer peripheral length Lc, and is 1/1 / the outer peripheral length Lc. It is more preferably 2 or less.

  When attaching the first adhesive surface 41 of the double-sided adhesive tape 40 to the base end portion 22, as shown in FIG. 7, a release liner 40d may be left on the second adhesive surface 42 of the double-sided adhesive tape 40. In general, the double-sided pressure-sensitive adhesive tape 40 has a structure in which a pressure-sensitive adhesive layer 40b containing a pressure-sensitive adhesive, a support 40a, a pressure-sensitive adhesive layer 40c containing a pressure-sensitive adhesive, and a release liner 40d are sequentially laminated. Then, when a part of the adhesive layer 40b is attached to the back side 21b of the base end portion 22 with the release liner 40d attached to the adhesive layer 40c, unintended attachment of the adhesive layer 40c is suppressed. . In this case, the adhesive layer 40b becomes the first adhesive surface 41, and the adhesive layer 40c becomes the second adhesive surface 42. Of course, a part of the pressure-sensitive adhesive layer 40c can be attached to the back side 21b of the base end 22 in a state where a part or the whole of the release liner 40d is peeled off from the pressure-sensitive adhesive layer 40c. In this case, the adhesive layer 40c becomes the first adhesive surface 41, and the adhesive layer 40b becomes the second adhesive surface 42.

  In the second attaching step ST2 shown in FIG. 8, first, when the release liner 40d is attached to the second adhesive surface 42 of the double-sided adhesive tape 40, the release liner 40d is peeled off from the second adhesive surface 42. In a state where the second adhesive surface 42 is exposed, as shown in FIG. 8, the second adhesive surface 42 is applied to the outer peripheral surface 10 o of the barrel member 10 from the end 44 side. In this state, the barrel member 10 is rotated in the circumferential direction D10 around the rotation axis AX1 so as to wind the base end portion 22 and the double-sided adhesive tape 40. At this time, the first portion 421 protruding from the base end portion 22 of the second adhesive surface 42 is directly attached to the outer peripheral surface 10o, the subsequent second portion 422 is directly attached to the outer peripheral surface 10o, and the subsequent third portion 423 is attached. The first adhesive surface 41 is attached to the protruding portion 412.

  Then, as shown in FIG. 9, the double-sided pressure-sensitive adhesive tape 40 is wound around the outer peripheral surface 10o of the barrel member 10 longer than one turn, and an overlapping portion 53 where the outer adhesive surface 51 and the inner adhesive surface 52 are stuck is formed. It is formed on the double-sided adhesive tape 40. In the double-sided pressure-sensitive adhesive tape 40, at least the end 43 that is on the drawing direction D22 and the end 44 that is on the housing direction D21 are included in the overlapping portion 53. The base end 22 of the sheet-like member 20 is stuck at least outside the overlapping portion 53. The base end portion 22 shown in FIG. 9 is attached to the outside of the attaching portion 511 including the overlapping portion 53. In this manner, the base end portion 22 is fixed to the outer peripheral surface 10o of the barrel member 10.

  In the outer adhesive surface 51, the sticking part 511 stuck to the back side 21b of the base end part 22 is the part that was the sticking part 411, and the remaining protruding part 512 is the part that was the sticking part 412. Most of the protruding portion 512 shown in FIG. 9 is attached to the inner adhesive surface 52, but a part is not attached to the inner adhesive surface 52. Also, of the inner adhesive surface 52, the first portion 521 on the side opposite to the protruding portion 512 is the portion that was the first portion 421, and the second portion 522 directly attached to the outer peripheral surface 10o except for the first portion 521. Is the portion that was the second portion 422, and the third portion 523 attached to the outer adhesive surface 51 is the portion that was the third portion 423. The overlapping portion 53 corresponds to the third portion 523 of the inner adhesive surface 52, and is a portion where the third portion 523 and the protruding portion 512 of the outer adhesive surface 51 are adhered.

Here, in the circumferential direction D10 of the winding shaft 2, if the length La of the attaching portion 511 where the outer adhesive surface 51 of the double-sided adhesive tape 40 is attached to the base end portion 22 is shorter than the outer peripheral length Lc (the above inequality (1) )), The overlapping portion 53 of the double-sided adhesive tape 40 is formed without the base end 22 to which the double-sided adhesive tape 40 is adhered. In this case, even if the end 43 on the drawer side of the double-sided adhesive tape 40 is pulled by the adhesive end 22a of the main body portion 21, it is retained on the outer adhesive surface 51 of the inner double-sided adhesive tape 40. The adhesive strength of the base portion 22 is improved.
In addition, from the viewpoint of obtaining good adhesive strength of the base end portion 22 to the outer adhesive surface 51, the length La of the attaching portion 511 is preferably equal to or more than の of the outer peripheral length Lc, and is equal to or more than 以上 of the outer peripheral length Lc. More preferred.

Furthermore, the sum La + Lb of the length Lb of the overlapping portion 53 of the double-sided adhesive tape 40 and the length La of the attaching portion 511 in the circumferential direction D10 of the winding shaft 2 is longer than the outer peripheral length Lc.
Lc <La + Lb (3)
The length Lb itself of the overlapping portion 53 is preferably at least 1/10 of the outer peripheral length Lc, more preferably at least 1/6 of the outer peripheral length Lc, from the viewpoint of obtaining good adhesive strength of the base end portion 22 to the outer peripheral surface 10o. . Further, in order to obtain good adhesive strength of the base end portion 22 to the outer peripheral surface 10o while saving the double-sided adhesive tape 40, the length Lb of the overlapping portion 53 is preferably equal to or less than the outer peripheral length Lc, and is 1/1 / the outer peripheral length Lc. It is more preferably 2 or less. In the winding device 1 shown in FIGS. 8 and 9, the length Lb of the overlapping portion 53 is slightly shorter than the length Ld of the protruding portion 412.

  When the temperature inside the vehicle becomes high due to parking in the middle of summer or the like, the adhesive of the double-sided adhesive tape 40 is softened, and the adhesive strength between the outer peripheral surface 10o of the barrel member 10 and the double-sided adhesive tape 40 may be reduced. In the winding device 901 of the comparative example shown in FIG. 11, there is a possibility that the pulled-out end 43 of the double-sided adhesive tape 40 is peeled off from the outer peripheral surface 10o by being pulled by the adhesive end 22a of the pulled-out sheet member 20. .

  In this specific example, as shown in FIG. 9, the inner adhesive surface 52 of the outer double-sided adhesive tape 40 and the outer adhesive surface 51 of the inner double-sided adhesive tape 40 are firmly attached at the overlapping portion 53. For this reason, even if the end 43 on the drawer side of the double-sided adhesive tape 40 on the outside is pulled by the adhesive end 22 a of the main body portion 21, it is retained by the internal double-sided adhesive tape 40. Further, in order to improve the adhesive strength of the base end portion 22 to the outer peripheral surface 10o of the winding shaft 2, it is not necessary to form the winding shaft 2 or the like into a complicated shape, and an increase in the weight of the winding shaft 2 or the like is suppressed. Is done. Therefore, in this specific example, the adhesive strength of the base end portion of the sheet-shaped member to the outer peripheral surface of the winding shaft can be improved with a simple structure, and a lightweight winding device can be provided by inexpensive measures. .

(3) Modification:
Various modifications of the present invention are conceivable.
The winding device is not limited to the tonneau cover device, but may be a sunshade device, a partitioning device that partitions a space in the vehicle, for example, back and forth. The sunshade device can be installed in a side window, a rear window, a roof window, a front window, or the like. The drawing direction of the sheet-like member may be upward, downward, leftward, rightward, forward, or the like, in addition to the rearward direction.
The bonding target at the base end of the sheet-shaped member is not limited to the barrel member, and may include at least one of the end members 30A and 30B together with the barrel member 10.

  The overlapping part of the double-sided pressure-sensitive adhesive tape is not limited to the two-layered double-sided pressure-sensitive adhesive tape, but may be a three- or more-layered double-sided pressure-sensitive adhesive tape. For example, when the length Ld of the protruding portion 412 shown in FIG. 5 is longer than the outer peripheral length Lc, an overlapping portion 53 is formed on the entire outer peripheral surface 10o, and at least a part of the overlapping portion 53 Overlapping layers. When the length La of the attaching portion 411 is shorter than the outer peripheral length Lc, the entire base end portion 22 of the sheet-like member 20 is attached to the outside of the overlapping portion 53.

  The initial position at which the second adhesive surface of the double-sided adhesive tape is applied to the outer peripheral surface of the winding shaft is not limited to the end 44 as shown in FIG. 8, but the outer adhesive surface 51 and the inner adhesive surface 52 are stuck. It may be a position in the drawing direction D22 in the range where the overlapping portion 53 is formed.

(4) Example:
Hereinafter, the present invention will be described specifically with reference to Examples, but the present invention is not limited to the following Examples.

[Example 1]
Leather made of vinyl chloride resin was used for the main body of the sheet member. An extruded product made of aluminum was used for the barrel member. The outer shape of the cross section of the barrel member is circular, and the outer peripheral length Lc is 52 mm. The length La of the sticking portion of the first adhesive surface in the pull-out direction was set to 50 mm, the length Ld of the protruding portion 412 of the first adhesive surface in the pull-out direction D22 was set to 10 mm, and the production shown in FIGS. According to the method, a sample of the winding device as shown in FIG. 9 was formed.

[Comparative Example 1]
The same material and shape as in Example 1 were used for the main body portion of the sheet-like member and the barrel member. The length La of the double-sided pressure-sensitive adhesive tape in the drawing direction was set to 50 mm, and a sample of the winding device as shown in FIG. 11 was formed according to the manufacturing method shown in FIG.

[Evaluation method]
With respect to the samples of Example 1 and Comparative Example 1, the state where the main body of the sheet-shaped member was pulled out was held for 48 hours in a high temperature environment of 80 ° C. Thereafter, a load was applied to pull the main body of the sheet member in the pull-out direction, and the load when the base end of the sheet member began to peel off from the outer peripheral surface of the barrel member was measured.

比較例１のサンプルでは、１３０Ｎの荷重で基端部の剥がれが見られた。一方、実施例１のサンプルでは、３９０Ｎと比較例１における荷重の３倍の荷重となるまで基端部の剥がれが見られなかった。[Evaluation results]
Table 1 shows the measurement results.

In the sample of Comparative Example 1, peeling of the base end was observed at a load of 130 N. On the other hand, in the sample of Example 1, peeling of the base end was not observed until the load was 390 N, which was three times the load in Comparative Example 1.

  As described above, when the double-sided pressure-sensitive adhesive tape is wound longer than one turn on the outer peripheral surface of the winding shaft and the base end of the sheet-shaped member is attached at least outside the overlapping portion, the outer periphery of the winding shaft It has been found that the adhesive strength of the base end of the sheet member to the surface is dramatically improved.

(5) Closing:
As described above, according to the present invention, according to various aspects, it is possible to provide a technique for improving the adhesive strength of the base end of the sheet-like member to the outer peripheral surface of the winding shaft with a simple structure. Needless to say, the above-described basic functions and effects can be obtained even with the technology including only the constituent elements according to the independent claims.
In addition, a configuration in which the configurations disclosed in the above-described examples are replaced with each other or the combination is changed, a known technology and the configurations disclosed in the above-described examples are replaced with each other or the combination is changed. Such a configuration can be implemented. The present invention includes these configurations and the like.

1. Winding device
2: winding shaft, 10: barrel member, 10o: outer peripheral surface, 12: opening,
Reference numeral 20: sheet member, 21: body part, 21a: front side, 21b: back side,
22: base end, 22a, 22e: adhesive end,
30, 30A, 30B ... end member, 31 ... fitting portion,
40 ... double-sided adhesive tape,
41: first adhesive surface, 411: sticking portion, 412: protruding portion,
42 ... second adhesive surface, 421 ... first part, 422 ... second part, 423 ... third part,
43,44 ... end,
51 ... outside adhesive surface, 511 ... sticking part, 512 ... protruding part,
52 ... inside adhesive surface, 521 ... first part, 522 ... second part, 523 ... third part,
53 ... overlapping part,
61 ... case member, 70 ... urging part,
AX1: rotating shaft, C1 ... cabin,
D1 ... axial direction, D10 ... circumferential direction, D21 ... accommodation direction, D22 ... pull-out direction,
ST1: First attaching step, ST2: Second attaching step.

Claims (3)

A sheet-shaped member; a winding shaft for winding the sheet-shaped member so that the sheet-shaped member can be pulled out;
A double-sided adhesive tape having a base end along the winding shaft in the sheet-like member adhered to an outer peripheral surface of the winding shaft,
The double-sided pressure-sensitive adhesive tape is wound longer than one turn around the outer peripheral surface of the winding shaft, and the overlapping portion where the outer pressure-sensitive adhesive surface of the double-sided pressure-sensitive adhesive tape is adhered to the inner pressure-sensitive adhesive surface of the double-sided pressure-sensitive adhesive tape is the double-sided tape. Formed on adhesive tape,
A winding device for a vehicle, wherein a base end of the sheet-shaped member is attached at least outside the overlapping portion. In the circumferential direction of the winding shaft, the length of the portion where the double-sided adhesive tape is stuck to the base end of the sheet-like member is La, the length of the overlapping portion of the double-sided adhesive tape is Lb, and the winding shaft is Let Lc be the outer peripheral length of
La <Lc <La + Lb
The vehicle winding device according to claim 1, wherein: A sheet-shaped member, and a method for manufacturing a vehicle winding device having a winding shaft for winding the sheet-shaped member so that the sheet-shaped member can be pulled out,
The first adhesive surface of the double-sided adhesive tape, which is longer than the outer periphery of the winding shaft in the drawing direction of the sheet-like member, protrudes from the base end with respect to the base end of the sheet-shaped member along the winding shaft. A first attaching step of attaching and attaching,
Of the second adhesive surface opposite to the first adhesive surface of the double-sided adhesive tape, a first portion protruding from the base end, and a second portion continuous from the first portion and not protruding from the base end. Attaching directly to the outer peripheral surface of the winding shaft, a second attaching step of attaching the remaining third portion continuous from the second portion to a portion of the first adhesive surface protruding from the base end portion, A method for manufacturing a vehicle winding device.

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