JP7762432B2 - Flexible seats and tank bags - Google Patents

Description

The present invention relates to a flexible sheet and tank bag that can be attached to a flat or uneven surface of an object, particularly to an oil tank of a saddle-type vehicle or to a portion of the vehicle corresponding to the location of the oil tank.

Saddle-type vehicles such as motorcycles and three-wheeled motor vehicles often used iron tanks for their oil tanks, but in recent years, many saddle-type vehicles have begun to use non-iron tanks, such as synthetic resin covers for the oil tank or aluminum tanks.

A tank bag manufactured and sold for use with steel oil tanks, designed to hold maps, navigation systems, mobile devices, wallets, and other small items, is equipped with a magnet in the mounting strap, allowing it to be firmly attached to the steel tank using magnetic force. This allows the bag to be attached and detached freely, while still being firmly attached to the tank.

It is known that an adhesive member for attracting magnetic pieces, which is used in conjunction with a magnetic piece to allow posters and the like to be attached, has a protective layer laminated and integrated onto the front side of the iron plate piece, and a buffer layer, adhesive layer, and release sheet laminated and integrated, in that order, onto the back side (see Patent Document 1).

It is also known that a board can be made by providing a bendable writing layer on the surface side of a bendable base material such as acrylic foam or urethane foam, and by interposing a magnetic material between the base material and the writing layer that can attract a magnet on the surface side of the writing layer, and by dividing the hard magnetic material into multiple pieces and scattering them at intervals from each other, a whiteboard that can attract magnets can be rolled up into a small shape (see Patent Document 2).

Furthermore, it is disclosed in a blog post that reads, "I've been thinking about buying one for a while and have been to the Nankai Parts Sendai store several times, but they've always been sold out. I finally managed to get my hands on this tank bag support, so I'll write about how easy it is to use. MBS-1011 Mag Bag Support Black (apparently there are other colors too). It's a sticker with metal inside that allows you to attach a tank bag magnet to the plastic tank part" (Non-Patent Document 1, etc.).

Patent No. 6755668 Japanese Patent Application Laid-Open No. 2008-1079

Blog post "Haineko Z1000 Blog", blog title "Nankai Parts Tank Bag Support", November 18, 2015, z1000-2012.cocolog-nifty.com/blog/2015/11/post-19bd.html

However, tank bags that are manufactured and sold for steel tanks and have magnets in the mounting strap cannot be attached to tanks with synthetic resin covers as is.

In such cases, if an adhesive member for attracting magnetic pieces containing an iron plate, such as that shown in Patent Document 1, is used and attached to a tank with a synthetic resin cover, there are problems with the flexibility and durability of the member when it is attached to the surface of a three-dimensional object with a curved, non-flat shape, such as an oil tank for a motorcycle, etc.

Furthermore, in the example board shown in Patent Document 2, although the base material is flexible, the magnetic material is made of a thin plate, so the magnetic force is not strong and it is not suitable for securing heavy objects such as tank bags.

Figure 20 shows an example of a conventional flexible sheet 100. As described in Non-Patent Document 1, when a product named "Mag Bag Support" (Nankai Parts Co., Ltd., Model No. MBS-1011) obtained by the applicant is disassembled, the structure is as shown in Figure 20(a) (plan view), (b) (front view), and (c) (enlarged exploded view of Ery-Ert). Specifically, the flexible sheet 100 shown in Figure 20 has a synthetic resin rubber sheet 101 provided with a magnetized region 400 containing, for example, a plurality of magnetizable spherical iron balls 410. The adhesive layer 102 can be attached to the tank of a plastic cover for a motorcycle or other two-wheeled motor vehicle.

However, as can be seen from Non-Patent Document 1, the flexible sheet 100 shown in the example of Figure 20 is thin and flexible, but the magnetized region 400, which contains multiple small, spherical iron balls 410, does not have enough magnetic force to firmly secure a tank bag carrying a heavy object.

As explained above, flexible sheets made of non-magnetic resins and other materials that can be attached to flat or uneven surfaces of objects to which magnets cannot be attached are available on the market, but there are several issues with these.

The problem that this invention aims to solve is to provide a flexible sheet that can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank, and that can strongly attract a magnet to the attached portion, as well as a tank bag for a saddle-ride vehicle that can utilize this flexible sheet.

In order to solve the above problems, the present invention provides a flexible sheet that can be attached to a flat or uneven surface of an object having a flat or uneven shape, the flexible sheet comprising: one or more ferromagnetic plates; a plate-containing portion that contains the entire plate in a layer made of a flexible synthetic resin material with a thickness greater than the thickness of the one or more ferromagnetic plates; and one or more flap portions that are made of the synthetic resin material and have a thickness thinner than the thickness of the plate-containing portion on one surface side in the thickness direction of the plate-containing portion, and are connected to the one surface side of the plate-containing portion across a groove portion formed with a bendable concave structure, and are connected to the other surface side in the thickness direction of the plate-containing portion with the same horizontal plane, and an adhesive layer is provided on the other surface side in the thickness direction of the plate-containing portion and the flap portion.
In order to solve the above problems, the present invention provides a tank bag for a saddle-ride type vehicle that is attached to an oil tank of the saddle-ride type vehicle or to a vehicle part corresponding to the position of the oil tank, the tank bag comprising a plurality of mounting belts and a plurality of the flexible sheets, each of which has a magnet attached to it, so that when the flexible sheets are attached to the oil tank of the saddle-ride type vehicle or to a vehicle part corresponding to the position of the oil tank, each of the magnets attached to the mounting belts of the flexible sheets can be attached to the one or more ferromagnetic plates included in the plate-containing portion.

The flexible sheet according to the present invention can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank, and a magnet can be strongly attracted to the attached portion. Furthermore, the tank bag according to the present invention can be used when attached to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank.

1 is a diagram showing an example of the structure of a first embodiment of a flexible sheet according to the present invention; 2 is a diagram illustrating an example of the structure of the flexible sheet according to the first embodiment, following FIG. 1 . 5A and 5B are diagrams illustrating an example of attachment of a flexible sheet according to the first embodiment. 5A and 5B are diagrams illustrating a state in which the flexible sheet of the first embodiment is attached to an uneven surface. 1 is a diagram showing an example of a case where a tank bag is attached to a tank of a motorcycle using the flexible sheet of the first embodiment. FIG. 3A to 3C are diagrams illustrating examples of the shape of the flexible sheet in the thickness direction of the first embodiment. 1A and 1B are diagrams illustrating a flexible sheet and a cut flexible sheet according to a first embodiment. 1A and 1B are diagrams illustrating a state in which the flexible sheet of the first embodiment and a cut flexible sheet are attached to an oil tank of a motorcycle. 1 is an image showing an example of a prototype of a flexible sheet according to the first embodiment. 10 is an explanatory image showing a state in which the bending property of a prototype of the flexible sheet of the first embodiment is being tested. 10 is an image showing a prototype of the flexible sheet of the first embodiment attached to an oil tank of a motorcycle. 10 is a series of images showing a state in which the prototype of the flexible sheet of the first embodiment is attached to an oil tank of a motorcycle. 10A and 10B are diagrams illustrating an example of a groove shape of a flexible sheet according to another embodiment. 10A and 10B are diagrams illustrating examples of groove structures of flexible sheets according to other embodiments. 10A and 10B are diagrams illustrating an outline of the degree of flexibility of a flexible sheet according to another embodiment. 10A and 10B are diagrams illustrating an example of the structure of a flexible sheet according to a third embodiment. 10A and 10B are diagrams illustrating a comparative example between the flexible sheet of the third embodiment and the flexible sheet of the first embodiment. 10A and 10B are diagrams illustrating an example of the structure of a flexible sheet according to a fourth embodiment. 10A and 10B are diagrams illustrating a comparative example between the flexible sheet of the fourth embodiment and the flexible sheet of the first embodiment. FIG. 1 is a diagram showing an example of a conventional flexible sheet.

The flexible sheet and tank bag according to the present invention will now be described in detail with reference to the drawings. Here, identical or similar parts will be designated by common reference numerals, and duplicate explanations will be omitted. All of the following embodiments will be described focusing on examples of flexible sheets and tank bags used primarily in saddle-type vehicles such as motorcycles and tricycles. It should be noted that the present invention is not limited to saddle-type vehicles, and can also be applied to flat or curved objects.

[First embodiment]
The configuration of a first embodiment of a flexible sheet 1A according to the present invention will be described below with reference to FIGS. 1 to 12. FIG. 1 shows an example of the structure of a first embodiment of a flexible sheet 1A according to the present invention, with FIG. 1(a) being a plan view of the flexible sheet 1A and FIG. 1(b) being a longitudinal cross-sectional view taken along the line II in FIG. 1(a). FIG. 2 shows an example of the structure of the flexible sheet 1A of the first embodiment, following FIG. 1, with FIG. 2(a) being a plan view, FIG. 2(b) being a front view, FIG. 2(c) being a bottom view, and FIG. 2(d) being a right side view. The other figures will be described later as appropriate.

The flexible sheet 1A of the first embodiment can be attached to the flat or uneven surface of an object having a flat or uneven surface. The flexible sheet 1A is composed of an iron plate 4A, an iron plate containing portion 2A, and multiple flap portions 3A.

The iron plate containing portion 2A is made of a flexible synthetic resin material (e.g., elastomer) that encloses the entire iron plate with a layer (thickness t _th ) that is thicker than the thickness t _ir of the iron plate 4A shown in Fig. 6. The iron plate 4A may be made of any ferromagnetic material other than iron, such as cobalt or nickel.

The multiple flap portions 3A (flap portions 31a, 32a, 33a, and 34a) are adhesive members made of a flexible synthetic resin material such as elastomer to reinforce the attachment of the steel plate-containing portion 2A.

The grooves 11a, 13a, 15a, and 17a are formed along the peripheral contour of the iron-plate containing portion 2A. The iron-plate containing portion 2A and the respective flap portions 31a, 32a, 33a, and 34a are connected to one surface 21a (hereinafter simply referred to as surface 21a) of the iron-plate containing portion 2A, with the grooves 11a, 13a, 15a, and 17a, which are formed as bendable recessed structures, as boundaries. Furthermore, as shown in Figure 6, the thickness tthdw of the grooves 11a, 13a, 15a, and 17a on the other surface 10a (hereinafter simply referred to as back surface 10a) side is _{formed thinner} than the thickness _tth of the iron-plate containing portion 2A so that the recessed structure is formed on the one surface 21a side in the thickness direction of the iron-plate containing portion 2A.

Furthermore, the steel plate containing portion 2A and each of the flap portions 31a, 32a, 33a, and 34a are connected to the same horizontal plane on the other surface 10a side of the steel plate containing portion 2A in the thickness direction. An adhesive layer (not shown) is provided on the other surface 10a side of the steel plate containing portion 2A in the thickness direction.

In the case of multiple flap portions 3A, and when adjacent flap portions 31a and 33a, and adjacent flap portions 32a and 34a have different groove directions, adjacent flap portions 31a and 33a are separated by separation path 19a, and adjacent flap portions 32a and 34a are separated by separation path 110a.

As shown in Figures 1, 2, and 6, within the flap portions 31a, 32a, 33a, and 34a, one or more flap groove portions 12a, 14a, 16a, and 18a are formed on one surface 21a with a thickness thinner than the thickness of the steel plate-containing portion 2A and with a bendable, deformable concave structure.

The thickness of the sheet from the flap surfaces 311a and 312a to the back surface 10a may be the same as or thinner than the thickness of the steel plate-containing portion 2A. The same applies to the thickness from the flap surfaces 321a and 322a to the back surface 10a, from the flap surfaces 331a and 332a to the back surface 10a, and from the flap surfaces 341a and 342a to the back surface 10a.

As shown in Figures 1 and 2, in multiple flap portions 3A, the groove directions of groove portions 11a and 15a differ between adjacent flap portions 31a and 33a, and the groove directions of groove portions 13a and 17a differ between adjacent flap portions 32a and 34a. For example, adjacent flap portions 31a and 33a are separated by separation path 19a. Furthermore, adjacent flap portions 32a and 34a are separated by separation path 110a.

Here, Figure 3 is a diagram showing an example of the attachment of the flexible sheet 1A of the first embodiment. Also, Figure 4 is a diagram illustrating the attachment state of the flexible sheet 1A of the first embodiment on an uneven surface. Figure 5 is a diagram showing an example of attaching a tank bag 5A to an oil tank 9 of a motorcycle using the flexible sheet 1A of the first embodiment. Figure 6 is a diagram illustrating an example of the shape of the flexible sheet 1A of the first embodiment in the thickness direction.

As an example, the prototype of flexible sheet 1A shown in Figures 3 and 5 allows a tank bag 5A with magnets encapsulated in mounting belts 51 and 52 to be attached to an oil tank 9 with a synthetic resin cover, for example, of a motorcycle as shown in Figure 5. The prototype of flexible sheet 1A is made of an elastic elastomer. In particular, it has the following features to make it easier to attach to the uneven surfaces of three-dimensional objects.

The flexible sheet 1A shown in Figures 3 and 4 is shown attached to an object with a concave-convex surface, such as the oil tank 9 of a synthetic resin cover for a motorcycle. The dashed lines in Figure 4 outline the concave-convex surface on the side surface of the oil tank 9, which is made up of vertical ridges FLud and longitudinal ridges FLfr.

In flexible sheet 1A, the groove directions of grooves 11a, 13a, 15a, and 17a are formed along the peripheral contour of steel plate-containing portion 2A, allowing each flap portion 31a, 32a, 33a, and 34a to bend with each groove direction as the bending axis.

For example, when flexible sheet 1A is attached to an object with an uneven surface as shown in Figure 4, iron plate containing portion 2A contains a hard iron plate 4A, so the back surface 10a of iron plate containing portion 2A becomes a nearly flat attached portion. Therefore, attention point Pta, indicated by a dashed circle in Figure 4, is the area around iron plate containing portion 2A where gaps are likely to form between the flexible sheet 1A and the uneven surface when attached to the object.

In the flexible sheet 1A of the first embodiment, grooves 11a, 13a, 15a, and 17a are formed around the steel plate containing portion 2A with a bendable, deformable recessed structure, and flap portions 31a, 32a, 33a, and 34a are formed in the multiple flap portions 3A, with the grooves 11a, 13a, 15a, and 17a as boundaries.

For example, in the iron plate containing portion 2A shown in Figure 4, the iron plate 4A is approximately rectangular, and flap portions 31a, 32a, 33a, and 34a are connected to the opposing sides of the four sides along the outer periphery of the approximately rectangular shape of the iron plate 4A, thereby reducing the formation of gaps.

On one surface 21a of the steel plate containing portion 2A in the thickness direction, grooves 11a, 13a, 15a, and 17a, which are thinner than the thickness of the steel plate containing portion 2A and have a bendable, concave structure, serve as boundaries. On the other surface (rear surface 10a) in the thickness direction of the steel plate containing portion 2A, multiple flap portions 31a, 32a, 33a, and 34a, which are made of a synthetic resin material (e.g., elastomer) and have the same horizontal plane, are connected.

In the iron plate containing portion 2A, which includes the iron plate 4A, grooves 11a, 13a, 15a, and 17a are formed on the surface side of the periphery of the iron plate 4A, following the peripheral shape of the iron plate 4A. These grooves 11a, 13a, 15a, and 17a form boundaries along the grooves with the flap portion 3A.

The peripheral portion of the steel plate 4A, which conforms to the peripheral shape, preferably has grooves extending in four directions. For example, grooves extending in the four directions indicated by the dashed lines in Figure 4. Furthermore, by providing slits or portions that are not connected to the flap portions 31a, 32a, 33a, and 34a at the boundaries in different directions, a polygonal bent structure can be created, for example, along different uneven surfaces, so that the adhesive surfaces come into closer contact.

Since the iron plate containing portion 2A is a rubber sheet containing an iron plate 4A, the iron plate containing portion 2A is difficult to bend. Therefore, by forming grooves 11a, 13a, 15a, and 17a at the boundaries between the iron plate containing portion 2A and the flap portions 31a, 32a, 33a, and 34a, the sheet can be easily bent in the direction opposite the front surface.

The tank bag 5A for a saddle-ride vehicle shown in Figure 5(a) can normally be attached to an iron oil tank of a saddle-ride vehicle as is, because each of the tank bag 5A's multiple mounting belts 51 and 52 is equipped with a magnet. However, if the saddle-ride vehicle shown in Figure 5(a) has an oil tank 9 with a synthetic resin cover, the tank bag 5A cannot be attached to the oil tank 9 with a synthetic resin cover as is.

As shown in Figure 5(a), flexible sheets 1A are attached to the synthetic resin-covered oil tank 9 at two locations on the left and right of the rear side 92 on both side surfaces 93 closer to the rear tank surface 91 of the oil tank 9, and at two locations on the left and right of the front side 94 on both side surfaces 93. Then, as shown in Figure 5(b), a storage case 50 is placed on the top surface 95 of the oil tank 9 so that a tank bag 5A is mounted thereon, and magnets mounted on the multiple mounting belts 51 and 52 allow each of the multiple flexible sheets 1A to be attached to the iron plate 4A contained in the iron plate containing portion 2A.

Here, we will explain the details of an example of the thickness direction shape of the flexible sheet 1A of the first embodiment shown in Figure 6. Figure 6(a) is an enlarged view of the vertical cross section of Figure 1(b) taken along the line I-I in Figure 1(a), Figure 6(b) is an enlarged view of the left edge of Figure 6(a), and Figure 6(c) is an enlarged view of the inclusion layer of the iron plate 4A in Figure 6(a).

6(a) and 6(b) show the thickness th of the flexible sheet 1A in the thickness direction, the depth t _thup of the grooves 13a and 15a and the flap groove 16a, the thickness t _thdw of those grooves, the groove opening width t _w , the first groove inclined width t _r , the groove bottom width t _c , and the second groove inclined width t _l . Also, Fig. 6(c) shows the thickness t _ir of the iron plate 4A in the thickness direction of the flexible sheet 1A, the thickness t _up of the upper layer of the iron plate-containing portion 2A, and the thickness t _dw of the lower layer of the iron plate-containing portion 2A.

As shown in Figures 6(a) to (c), the thickness _tthdw of the bottom surface of groove portions 11a, 13a, 15a, and 17a, and the thickness _tthdw of the bottom surface of flap groove portions 12a, 14a, 16a, and 18a are formed by grooves with a concave structure that are thinner than the thickness _tth of iron plate containing portion 2A on one surface 21a side in the thickness direction of iron plate containing portion 2A.

The sheet peripheral edge Eg shown in Figure 6(a) has a structure in which, for example, the thickness of the flap portion 31a becomes thinner at the edge side, or the flap portion 31a slopes downward at the edge side. For example, when the flexible sheet 1A is attached to an oil tank 9, not only does this reduce the repulsive force of the sheet at the edge side, but it also has the following advantages:

For example, to make the edges less likely to come off when a tank bag or the like is attached to the oil tank 9 or when the edges come into contact with clothing or other items when the driver gets in or out of the car, and to reduce the frequency of collisions with these objects at the edges, the flap portion 31a is made thinner than the plate thickness of the portion other than the flap groove portion 12a.

Figure 7 shows (a) a cut flexible sheet 1Ab of the first embodiment, which is an example of the flexible sheet 1A cut along the chain lines II and III. Figure 8 shows the flexible sheet 1A shown in Figure 7(a) and the cut flexible sheet 1Ab shown in Figure 7(b) attached to the oil tank 9 of a motorcycle.

In Figure 7(a), the flexible sheet 1A of the first embodiment is cut along the chain line II along the flap grooves 12a and 16a, and then cut along the chain line III along the flap grooves 14a and 18a to produce the cut flexible sheet 1Ab shown in Figure 7(b). In the cut flexible sheet 1Ab, as shown in Figure 7(b), flap portions 31ab, 32ab, 33ab, and 34ab remain, having been cut from the flap grooves 12a, 14a, 16a, and 18a to the ends of the original flap portions 31a, 32a, 33a, and 34a.

Figure 8 shows an oil tank 9, a synthetic resin cover located on the rear side of the handlebar 81 of a motorcycle handlebar 8A, with cut flexible sheets 1Ab attached to two locations on the left and right of the rear side 92 on both side surfaces 93 closer to the rear tank surface 91 of the oil tank 9, and flexible sheets 1A attached to two locations on the left and right of the front side 94 on both side surfaces 93.

With the flexible sheet 1A and cut flexible sheet 1Ab attached in this manner, the tank bag 5A can be placed over the oil cap 96 on the upper surface 95 of the oil tank 9, and the magnets mounted on the multiple mounting belts 51 and 52 of the tank bag 5A can be used to firmly attach each of the multiple flexible sheets 1A and cut flexible sheets 1Ab to the iron plate 4A contained in the iron plate containing portion 2A.

Figure 9 is an image showing a prototype of flexible sheet 1A corresponding to the first embodiment, and Figure 10 is an explanatory image showing the prototype being tested for flexibility. Figures 11 and 12 are images showing an example of the prototype attached to a synthetic resin oil tank cover of a motorcycle, and an example of a tank bag attached to the synthetic resin oil tank cover.

As an example, for example, in the prototype flexible sheet 1A shown in Figures 9 and 10, flexible sheet 1A is a resilient sheet (with adhesive on the back and a steel plate 4A enclosed within the resilient sheet) that is primarily used to attach a tank bag 5A (corresponding to Figure 5) with an enclosed magnet to mounting belts 51 and 52 to an oil tank 9 (corresponding to Figures 3 and 5) of a synthetic resin cover for a motorcycle, as shown in Figures 11 and 12. In particular, it has the following features to make it easier to attach to the uneven surfaces of three-dimensional objects:

The resin encapsulating the iron plate 4A is formed in an encapsulation layer in the iron plate containing portion 2A that is thicker than the iron plate 4A. Flap portions 31a, 32a, 33a, and 34a are provided along the periphery of the encapsulation area of the iron plate containing portion 2A, and one or more flap groove portions 12a, 14a, 16a, and 18a are formed in the flap portions 31a, 32a, 33a, and 34a.

For example, as a manufacturing method of the flexible sheet 1A, an iron plate 4A is enclosed by insert molding, and the iron plate 4A is surrounded by elastomer to form the characteristic shape as described above, which has the following excellent features.
・Flexible sheet with excellent flexibility even when it contains thick iron plates. ・Flexible sheet with strong magnetic fixation.

In the flexible sheet 1A, the iron plate 4A, which is approximately square in plan view as shown in Figures 1 and 2, is arranged so that the entire iron plate is encompassed by an iron plate encompassing portion 2A made of a flexible synthetic resin material in a layer thicker than the thickness of the iron plate 4A in the vertical direction (the plan view direction in Figure 2(a) is the upward direction) and in the peripheral direction of the side surfaces. As an example, the thickness t _ir of the iron plate 4A shown in Figure 6 can be approximately 2 mm. However, the thickness t _ir of the iron plate 4A is not limited to this.

The prototype images shown in Figures 11 and 12 are of a rubber sheet (a specially shaped rubber sheet with adhesive on the back and an iron plate embedded within) that allows a tank bag with an embedded magnet to be attached to a mounting belt, primarily to a synthetic resin tank cover for motorcycles. The rubber sheet is made of a highly elastic synthetic resin, such as elastomer.

9 to 12, the design values of the prototype flexible sheet 1A are, for example, as follows, based on the parameters shown in Fig. 6: sheet thickness th = 4 mm, groove depth t _thup = 2 mm, groove thickness t _thdw = 2 mm, groove opening width t _w = 4.5 mm, first groove inclined width t _r = 1.5 mm, groove bottom width t _c = 1.5 mm, second groove inclined width t _l = 1.5 mm, and opening angle α _w = 135 degrees. Also, the thickness of the iron plate 4A is t _ir = 2 mm, the thickness of the iron plate-including upper layer t _up = 1 mm, and the thickness of the iron plate-including lower layer t _dw = 1 mm. The overall dimensions of the flexible sheet 1A are as follows: the sheet width t _ya =112 mm, the sheet length t _ta =47 mm, and the dimensions of the iron plate 4A are both 30 mm.

9 to 12, the recessed structure of the groove portion is trapezoidal, and its opening angle is α _w = 135 degrees. It was confirmed that the groove portion and the flap groove portion can be folded sufficiently to follow when folded toward the back surface 10a, as shown in, for example, FIG.

The flexible sheet 1A of this embodiment has a concave structure with excellent flexibility, and because the sheet can be made thick, a thick steel plate can be used as the magnetic body. This allows the magnetic force of the flexible sheet 1A to be strong, making it possible to secure heavy objects such as tank bags. A tank bag typically weighs around 1 kg without any cargo, and 1 to 5 kg when loaded. However, the flexible sheet 1A attached to the plastic cover of the oil tank allows the tank bag to be firmly secured.

In this embodiment, the iron plate 4A is a single flat plate, but it may also contain multiple iron plates. For example, multiple rectangular iron plates may be used and arranged in a roughly square shape, with the multiple iron plates arranged in this roughly square shape being enclosed by the iron plate containing portion 2A.

The grooves form multiple recesses (dimples) to reduce the repulsive force of the entire sheet, even when it is attached to a curved surface such as the oil tank 9 of a motorcycle synthetic resin cover. This allows the adhesive surface of the flap portions 31a, 32a, 33a, and 34a around the adhesive layer on the back side of the iron plate containing portion 2A to adhere to the curved surface of the oil tank 9 with less repulsive force, even in a bent state, when the adhesive layer on the back side of the iron plate containing portion 2A is attached to the curved surface of the oil tank 9. This prevents the adhesive surface of the adhesive layer of the iron plate containing portion 2A from peeling off from the curved surface of the oil tank 9.

The flexible sheet of this embodiment can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank, and a magnet can be strongly attracted to the attached portion. Furthermore, the tank bag of this embodiment can be used when attached to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank.

Second Embodiment
13 to 15 are explanatory diagrams of the groove shape and groove opening angle. Fig. 13 is a diagram showing an example of the groove shape of a flexible sheet of another embodiment. Fig. 14 is a diagram showing an example of the groove structure of a flexible sheet of another embodiment, and Fig. 15 is a diagram explaining an outline of the degree of flexibility of a flexible sheet of another embodiment.

In Figure 13, the groove shapes in the longitudinal cross section of the sheet thickness of grooves 11a, 13a, 15a, and 17a of the steel plate containing portion 2A, flap groove 12a of flap portion 31a, flap groove 14a of flap portion 32a, flap groove 16a of flap portion 33a, and flap groove 18a of flap portion 34a, for example, include a rectangular shape as shown in Figure 13(a), a trapezoidal shape as shown in Figure 13(b), a narrow-angled triangular shape as shown in Figure 13(c), and a wide-angled triangular shape as shown in Figure 13(d).

Fig. 13(a) shows an example of a rectangular groove shape with an open angle α _v =90 degrees, and Fig. 13(b) shows an example of a trapezoidal groove shape with an open angle α _w =135 degrees. Fig. 13(c) shows an example of a triangular groove shape with an open angle α _u1 =60 degrees, and Fig. 13(c) shows an example of a triangular groove shape with an open angle α _u2 =90 degrees. The triangular groove shapes shown in Figs. 13(c) and 13(d) are also referred to as V-grooves.

For example, V-groove grooves such as those shown in Figures 13(c) and (d) have a greater ability to return to their original shape when bent than grooves with a groove bottom such as those shown in Figures 13(a) and (b), and are therefore less flexible at any angle.

On the other hand, grooves with a groove bottom, such as those shown in Figures 13(a) and (b), can be bent along the entire bottom surface, providing excellent flexibility. Furthermore, by reducing the thickness of the bottom surface (ta - tf), flexibility can be further improved. However, if the thickness of the bottom surface (ta - tf) is made too thin, the sheet will be more susceptible to tearing or breakage at the grooves, resulting in a reduced durability of the flexible sheet. Note that ta is the sheet thickness, and tf is the depth of the groove.

Figure 14 is a diagram showing an example of the groove structure of a flexible sheet in another embodiment. The flap portion 31a shown in Figure 1(a) corresponds to the flap portion 31a shown in Figure 1, etc., and shows the groove portion 11a, flap groove portion 12a, and flap surfaces 311a and 312a shown in Figure 1, etc. The groove shape shown in Figure 14(b) (longitudinal cross-sectional view taken in the direction of arrow IV in Figure 14(a)) corresponds to, for example, the trapezoidal groove shape shown in Figure 13(b). On the other hand, the flap portion 31u shown in Figure 14(d) shows the groove portion 11u, flap groove portion 12a, and flap surfaces 311u and 312u. The groove shape shown in Figure 14(e) (longitudinal cross-sectional view taken in the direction of arrow V in Figure 14(d)) corresponds to, for example, the wide-angle triangular groove shape shown in Figure 13(d).

The trapezoidal groove structure (open angle α _w ) shown in Fig. 14(b) bent in the direction of the arrow in the figure is the bent state of the trapezoidal groove structure shown in Fig. 14(c). The triangular groove structure (open angle α _u ) shown in Fig. 14(e) bent in the direction of the arrow in the figure is the bent state of the triangular groove structure shown in Fig. 14(f). This shows that the bendability of the trapezoidal groove structure shown in Fig. 14(c) is superior to the bendability of the triangular groove structure shown in Fig. 14(f).

FIG. 15 is a diagram illustrating the degree of flexibility of a flexible sheet according to another embodiment.
The rectangular groove shape shown in Fig. 15(a) has an opening angle αv, and the trapezoidal groove shape shown in Fig. 15(b) has an opening angle _αw . The flexibility of the flexible sheet in the direction increasing the opening angle _αv for the rectangular groove shape shown in Fig. 15(a) is shown in Fig. 15(c). On the other hand, the flexibility of the flexible sheet in the direction increasing the opening angle _αw for the trapezoidal groove shape shown in Fig. 15(b) is shown in Fig. 15(d).

In addition, the bendability of the flexible sheet in the direction narrowing the opening angle _αv in the rectangular groove shape shown in Fig. 15(a) is shown in Fig. 15(e). On the other hand, the bendability of the flexible sheet in the direction narrowing the opening angle _αw in the trapezoidal groove shape shown in Fig. 15(b) is shown in Fig. 15(f). Note that ta is the sheet thickness, and tf is the groove depth.

For example, when the opening angle αv is set to approximately 90 degrees, in the prototype example, by bending the entire bottom surface, it is possible to bend the range of displacement up to Figures 15(c) and (d) with a displacement of approximately 60 degrees on one side.

Furthermore, for example, when the opening angle α _w is set to about 135 degrees, in the prototype example, by bending and folding the entire bottom surface, the displacement range up to Figures 15(d) and (f) can be made wider than when the opening angle α _v is set to about 90 degrees, for example, by bending with a displacement of about 90 degrees on one side. Note that if the thickness of the bottom (= thickness corresponding to ta-tf) is made thinner, it can be bent with even greater displacement.

Preferably, the groove shape of the groove portion and flap groove portion is approximately trapezoidal, and the opening angle on the opening side is greater than 90 degrees and less than 180 degrees.

The flexible sheet of this embodiment can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-type vehicle or to a portion of the vehicle corresponding to the location of the oil tank, and a magnet can be strongly attracted to the attached portion.

[Third embodiment]
Fig. 16 is a diagram showing an example of the structure of flexible sheet 1B of the third embodiment. As an example of the structure of flexible sheet 1B of Fig. 16, Fig. 16(a) is a plan view, Fig. 16(b) is a vertical cross-sectional view taken along the line VI-VI of Fig. 16(a), Fig. 16(c) is an enlarged view of flap portion 31b shown in Fig. 16(a), and Fig. 16(d) is a perspective view of flap portion 31b of Fig. 16(c).

The flexible sheet 1B of the third embodiment can be attached to the flat or uneven surface of an object having a flat or uneven surface. The flexible sheet 1B is composed of an iron plate 4B, an iron plate containing portion 2B, and multiple flap portions 3B.

In flexible sheet 1B, grooves 11b, 15b, 19b, and 113b are formed around the steel plate-containing portion 2B with a bendable, concave structure, and flap portions 31b, 32b, 33b, and 34b are formed in multiple flap portions 3B, with grooves 11b, 15b, 19b, and 113b as boundaries.

The iron plate containing portion 2B is a layer thicker than the thickness of the iron plate 4B, and the entire iron plate is made of a flexible synthetic resin (elastomer) material. The multiple flap portions 31b, 32b, 33b, and 34b are adhesive members made of a flexible synthetic resin material such as elastomer that reinforce the attachment of the iron plate containing portion 2B.

The steel plate containing portion 2B and each of the flap portions 31b, 32b, 33b, and 34b are connected on one surface 21b of the steel plate containing portion 2B, with groove portions 11b, 15b, 19b, and 113b, which are formed with a bendable concave structure, as boundaries. Furthermore, the thickness of groove portions 11b, 15b, 19b, and 113b is thinner than the thickness of the steel plate containing portion 2B on one surface 21b in the thickness direction of the steel plate containing portion 2B.

Furthermore, the steel plate containing portion 2B and each of the flap portions 31b, 32b, 33b, and 34b are connected to the same horizontal plane on the other surface 10b side of the steel plate containing portion 2B in the thickness direction. An adhesive layer (not shown) is provided on the other surface 10b side of the steel plate containing portion 2B in the thickness direction.

Furthermore, within the flap portion 31b, multiple flap grooves 12b, 13b, and 14b are formed on one surface 21b side with a thickness thinner than the thickness of the steel plate-containing portion 2B and with a bendable, deformable concave structure.

Furthermore, within flap portion 32b, multiple flap grooves 16b, 17b, and 18b are formed on one surface 21b side with a thickness thinner than the thickness of steel plate-containing portion 2B and with a bendable, deformable concave structure. Similarly, multiple flap grooves 110b, 111b, and 112b are formed within flap portion 33b, and similarly, multiple flap grooves 114b, 115b, and 116b are formed within flap portion 34b.

The thickness of the sheet from the flap surfaces 311b to 314b to the back surface 10b may be the same as or thinner than the thickness of the steel plate-containing portion 2B. The same applies to the thickness from the flap surfaces 321b to 324b to the back surface 10b, from the flap surfaces 331b to 334b to the back surface 10b, and from the flap surfaces 341b to 344b to the back surface 10b.

If the central iron plate 4B is circular, as shown in Figures 16(a) and (b), when attaching the flexible sheet 1B to the curved surface of a three-dimensional object, dead space is required between the grooves 11b, 15b, 19b, and 113b of the flap portions 31b, 32b, 33b, and 34b and the circular periphery of the iron plate-containing portion 2B. For this reason, a certain amount of space Ptb must be left at the folded portion, as shown in Figures 16(c) and (d), for example.

When flexible sheet 1B is attached to the three-dimensional curved surface of an object to which it is to be attached, gaps are likely to form around the outer periphery of iron plate containing portion 2B. Therefore, flap portions 31b, 32b, 33b, and 34b reduce the area where these gaps can form and reinforce the adhesive surface so that they cover the outer periphery of iron plate containing portion 2B. On the other hand, gaps are likely to form around the outer periphery of iron plate containing portion 2B other than the connection areas of flap portions 31b, 32b, 33b, and 34b.

Here, Figure 17 shows a comparative example between flexible sheet 1B of the third embodiment and flexible sheet 1A of the first embodiment. Specifically, Figure 17(a) shows a plan view of iron plate 4A of flexible sheet 1A of the first embodiment, Figure 17(b) shows a plan view of iron plate 4B of flexible sheet 1B of the third embodiment, and Figure 17(c) shows a comparative plan view of iron plate 4A and iron plate 4B.

For example, when attached to an object with an uneven surface such as an oil tank 9 of a motorcycle or the like as shown in Figures 3 and 4, the flexible sheet 1A of the first embodiment can reduce the gap between the object and the uneven surface, as shown by the caution point Pta indicated by the dashed circle in Figure 4, compared to the flexible sheet 1B of the third embodiment. In other words, when attached to an object with an uneven surface such as an oil tank 9 of a motorcycle or the like as shown in Figures 3 and 4, the flexible sheet 1A of the first embodiment is a more preferable shape.

In addition, for example, when the iron plate 4A (length and width t _iw ) and the iron plate 4B (diameter t _iw ) shown in Figure 17 have the same external dimensions, the square-shaped iron plate 4A has a wider effective area for the magnets (for example, circular) enclosed in the mounting belts 51 and 52 on the tank bag 5A side as shown in Figure 5, and therefore when attaching it with the mounting belts 51 and 52, the mounting area on the iron plate side is wider, making it easier to attach the magnet side.

The flexible sheet of this embodiment has a concave structure with excellent flexibility, and the sheet can be made thick, allowing a thick steel plate to be used as the magnetic material. This allows for a stronger magnetic force in the flexible sheet.

The flexible sheet of this embodiment can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank, and a magnet can be strongly attracted to the attached portion. Furthermore, the tank bag of this embodiment can be used when attached to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank.

[Fourth embodiment]
Fig. 18 shows an example of the structure of a flexible sheet 1C of the fourth embodiment, with Fig. 18(a) being a plan view of the flexible sheet 1C and Fig. 18(b) being a vertical cross-sectional view taken along the line VII-VII in Fig. 18(a). Fig. 19 shows a plan view of the flexible sheet 1C of the fourth embodiment and Fig. 19(b) being a comparative example to the flexible sheet 1A of the first embodiment.

The flexible sheet 1C of the fourth embodiment can be attached to the flat or uneven surface of an object having a flat or uneven surface. The flexible sheet 1C is composed of an iron plate 4C, an iron plate containing portion 2C, and multiple flap portions 3C.

In flexible sheet 1C, grooves 11c, 15c, 19c, and 113c are formed around the steel plate containing portion 2C with a bendable, concave structure, and flap portions 31c, 32c, 33c, and 34c are formed in multiple flap portions 3C, with grooves 11c, 15c, 19c, and 113c as boundaries.

The iron plate containing portion 2C is a layer thicker than the iron plate 4C, and the entire iron plate is made of a flexible synthetic resin (elastomer) material. The multiple flap portions 31c, 32c, 33c, and 34c are adhesive members made of a flexible synthetic resin material such as elastomer, which reinforce the attachment of the iron plate containing portion 2C.

The steel plate containing portion 2C and each of the flap portions 31c, 32c, 33c, and 34c are connected on one surface 21c of the steel plate containing portion 2C, with groove portions 11c, 15c, 19c, and 113c, which are formed with a bendable concave structure, as boundaries. Furthermore, the thickness of groove portions 11c, 15c, 19c, and 113c is thinner than the thickness of the steel plate containing portion 2C on one surface 21c in the thickness direction of the steel plate containing portion 2C.

Furthermore, the steel plate containing portion 2C and each of the flap portions 31c, 32c, 33c, and 34c are connected with the same horizontal plane on the other surface 10c side of the thickness direction of the steel plate containing portion 2C. An adhesive layer (not shown) is provided on the other surface 10c side of the thickness direction of the steel plate containing portion 2C.

Furthermore, within the flap portion 31c, multiple flap grooves 12c, 13c, and 14c are formed on one surface side with a thickness thinner than the thickness of the steel plate-containing portion 2C and with a bendable, deformable concave structure.

Furthermore, within flap portion 32c, multiple flap grooves 16c, 17c, and 18c are formed on one surface side with a thickness thinner than the thickness of steel plate-containing portion 2C and with a bendable, deformable concave structure. Similarly, within flap portion 33c, multiple flap grooves 110c, 111c, and 112c are formed, and similarly, within flap portion 34c, multiple flap grooves 114c, 115c, and 116c are formed.

The thickness of the sheet from the flap surfaces 311c to 314c to the back surface 10c may be the same as or thinner than the thickness of the steel plate-containing portion 2C. The same applies to the thickness from the flap surfaces 321c to 324c to the back surface 10c, from the flap surfaces 331c to 334c to the back surface 10c, and from the flap surfaces 341c to 344c to the back surface 10c.

The area directly below the other surface 10c (referred to as the backside) of the steel plate-containing portion 2C is a flat, inflexible portion, and when attaching the flexible sheet 1C to a curved object, the flap portions 31c, 32c, 33c, and 34c must complement the adhesive surface for attachment.

The planar shape of the steel plate containing portion 2C shown in Figure 18(a) is rectangular, and flap portions 31c, 32c, 33c, and 34c are connected along directions perpendicular to the sides of the rectangle (corresponding to the up/down and left/right directions on the paper).

By providing flap portions 31c, 32c, 33c, and 34c along the top, bottom, left, and right directions of this rectangular shape, the flexible sheet 1C can be made difficult to peel off, but the width of the vertical t _tc and horizontal t _yc shown in FIG. 19(a) becomes large (installation area Sc), and the location where it can be attached to, for example, an oil tank of a motorcycle or the like is limited.

On the other hand, in the flexible sheet 1A of the first embodiment, with respect to the width of the sheet length t _ta and the sheet width t _ya shown in Fig. 19(b) (installation area Sa), the planar shape of the iron plate containing portion 2A shown in Fig. 2(a) is rectangular, and the flap portions 31a, 32a, 33a, and 34a are connected along diagonal directions relative to the sides of the rectangle, so the dimension of the sheet length t _ta can be relatively reduced. For example, since the shape of an oil tank of a saddle-type vehicle such as a motorcycle or a tricycle is a complex, concave-convex curved shape, a long and narrow shape (a shape that reduces the dimension of the sheet length t _ta compared to the width of the sheet width t _ya ) is easier to attach to shapes such as an oil tank.

The flexible sheet of this embodiment has a concave structure with excellent flexibility, and the sheet can be made thick, allowing a thick steel plate to be used as the magnetic material. This allows for a stronger magnetic force in the flexible sheet.

The flexible sheet of this embodiment can be flexibly attached to the flat or uneven surface of an object, particularly to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank, and a magnet can be strongly attracted to the attached portion. Furthermore, the tank bag of this embodiment can be used when attached to the oil tank of a saddle-ride vehicle or a portion of the vehicle corresponding to the location of the oil tank.

Other Embodiments
Although the embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. Furthermore, for example, the features of each embodiment may be combined. Furthermore, these embodiments may be embodied in various other forms, and various omissions, substitutions, and modifications may be made without departing from the spirit of the invention. These embodiments and their modifications are within the scope and spirit of the invention, as well as the inventions and their equivalents as set forth in the claims for utility model registration.

1A, 1B, 1C... Flexible sheet, 1Ab... Cut flexible sheet, 2A, 2B, 2C... Iron plate containing portion, 3A, 3B, 3C... Multiple flap portions, 4A, 4B, 4C... Iron plate, 5A... Tank bag, 8A... Handle, 9... Oil tank, 10a, 10b, 10c... Other surface (rear surface), 11a, 13a, 15a, 17a, 11b, 15b, 19b, 113b, 11c, 15c, 19b, 113c, 11u ...groove portion, 12a, 14a, 16a, 18a, 12b, 13b, 14b, 16b, 17b, 18b, 110b, 111b, 112b, 114b, 115b, 116b, 12c, 13c, 14c, 16c, 17c, 18c, 110c, 111c, 112c, 114c, 115c, 116c, 12u... flap groove portion, 19a, 110a... separation path, 21a, 21b, 21c... one surface, 31a, 32a, 33a, 34a, 31ab, 32ab, 33ab, 34ab, 31b, 32b, 33b, 34b, 31c, 32c, 33c, 34c, 31u... Flap portion, 311a, 312a, 321a, 322a, 331a, 332a, 341a, 342a, 311b, 312b, 313b, 314b, 321b, 322b, 323b, 324b, 331b, 332b, 333b, 334b, 341b, 342b, 343b, 3 44b, 311c, 312c, 313c, 314c, 321c, 322c, 323c, 324c, 331c, 332c, 333c, 334c, 341c, 342c, 343c, 344c, 311u, 312u...flap surface, 50...storage case, 51, 52...mounting belt, 81...handlebar, 91...rear tank surface, 93...both side surfaces, 93, 92...rear side surfaces, 93...both side surfaces, 94...front side surfaces, 94, 95...upper surface

Claims (7)

A flexible sheet that can be attached to a flat or uneven surface of an object having a flat or uneven surface,
one or more ferromagnetic plates;
a plate containing portion that contains the entire plate with a layer made of a flexible synthetic resin material that is thicker than the thickness of the one or more ferromagnetic plates;
One or more flap portions made of the synthetic resin material, which are thinner than the thickness of the plate-containing portion on one surface side in the thickness direction of the plate-containing portion and connected on the one surface side of the plate-containing portion with a groove portion formed by a bendable concave structure as a boundary, and which are connected on the other surface side in the thickness direction of the plate-containing portion with the same horizontal plane,
A flexible sheet, characterized in that an adhesive layer is provided on the other surface side in the thickness direction of the plate-containing portion and the flap portion. The flexible sheet according to claim 1 , wherein the groove direction of the groove portion is formed along the peripheral contour of the plate-containing portion. The flexible sheet according to claim 2, characterized in that, in the case of the plurality of flap portions, when the groove directions of the groove portions of adjacent flap portions are different, the adjacent flap portions are separated from each other. The flexible sheet described in claim 3, characterized in that one or more flap groove portions are formed within the flap portion on the one surface side, with a thickness thinner than the thickness of the plate-containing portion and formed by the concave structure that can be bent and deformed. 5. The flexible sheet according to claim 1, wherein the recessed structure is substantially trapezoidal, and an opening angle of the substantially trapezoidal shape on the opening side is greater than 90 degrees and smaller than 180 degrees. The flexible sheet according to claim 5, characterized in that the object having a flat shape or an uneven surface shape is an oil tank of a saddle-type vehicle or a vehicle part corresponding to the position of the oil tank, and can be attached to the uneven surface of the oil tank or the vehicle part corresponding to the position of the oil tank. A tank bag for a saddle-ride type vehicle that is attached to an oil tank of the saddle-ride type vehicle or to a vehicle part corresponding to the position of the oil tank,
A plurality of mounting belts;
a plurality of flexible sheets according to claim 6;
A magnet is attached to each of the plurality of attachment belts,
A tank bag characterized in that, when the plurality of flexible sheets are attached to the oil tank of the saddle-ride type vehicle or to a vehicle part corresponding to the position of the oil tank, each of the magnets attached to the plurality of mounting belts of each of the plurality of flexible sheets can be attached to the one or more ferromagnetic plates contained in the plate containing portion.