TWI808830B - Swing practice mat and its manufacturing method - Google Patents

Abstract

The present invention provides a foot mat for swing practice that can provide a feeling as if swinging on a tatami mat. The foot mat (1) for swing practice of the present invention is provided with: a surface material (11) for the soles of the feet to step on, and a plate-shaped base material (12) fixed to the lower side of the surface material (11) to support the surface material (11) from the lower side, wherein the surface material (11) is formed by a mat surface (also called a stacked mat), and by stacking a plurality of mat surfaces (the first base material (12a), the second base material (12b) and the third base material (12) c)) to form the substrate (12). And it is better to make the direction of the stripes of the mat surface of one layer of the substrate (12) (for example: form the mat surface of the first substrate (12a)), and constitute the stripes of the mat surface of other layers overlapping on the upper or lower side of the layer (for example: form the mat surface of the second substrate (12b)) to be orthogonal (perpendicularly intersecting).

Description

Foot mat for swing practice and manufacturing method thereof

The present invention relates to a step mat for swing practice used when practicing a baseball swing and/or a golf swing, and a manufacturing method thereof.

If the baseball swing and/or the golf swing are practiced on the ground, the soles of the feet tend to slip, and it is difficult to grasp the feeling of turning the waist smoothly. Therefore, rubber foot mats (foot mats for swing practice) are laid, and swing or swing practice is performed in a state where the soles of the feet are not easy to slip. Such a foot pad for swing practice includes, for example, the foot pad for swing practice disclosed in Patent Document 1. However, this type of swing practice foot pad cannot achieve the effect of effectively exercising the toes.

By the way, Mr. Sadaharu Sadaharu, who holds the world record for the total number of home runs, is famous for swinging while standing on a tatami mat with bare feet when he was still a professional baseball player. I heard that Mr. Wang Zhenzhi's synonymous "scarecrow play (stand on one leg)" was also trained on tatami. If you stand on the tatami mat with bare feet and perform swing exercises, you can effectively train your toes. Specifically, you can perform swing (swing) practice while feeling: the feeling of accumulating the torsional force when twisting the waist with the toes firmly on the tatami surface, and the release of the torsional force when the toes are loosened from the tatami surface.

I heard that other than Sadaharu Oh, there are Shigeo Nagashima and Hideki Matsui who practice swinging on the tatami mats. And I heard that in recent years, players of the Tohoku Rakuten Golden Eagles of the Japanese professional baseball team have also practiced swinging in a tatami room. [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Application Publication No. 03-009771

[Problem to be solved by the invention]

Therefore, the effectiveness of doing bat swing (swinging bat) exercises on tatami has been widely known. However, if swing practice is performed on tatami mats, the tatami mats are quickly damaged, and the tatami mats must be replaced very frequently. It would be nice if there is a kind of foot pad for swing practice that can be obtained as if swinging on a tatami mat, but no one has proposed the technical scheme of this foot pad for swing practice so far.

The present invention was developed in order to solve the above-mentioned technical problems, and an object thereof is to provide a foot mat for swing practice that can provide a feeling like swinging on a tatami mat. In addition, it is also an object of the present invention to provide a method of manufacturing such a step mat for swing practice. [Technical means to solve the problem]

The above-mentioned technical problems can be solved by providing a step mat for swing practice with the following structure. that is, A foot pad for bat swing practice, which has: surface material for treading on, and A plate-shaped substrate that is fixed to the lower side of the surface material and supports the surface material from the lower side, and is characterized by: The surface material is formed of a mat, and the base material is made of a structure in which a plurality of mats are stacked.

In the foot pad for swing practice of the present invention, the surface material for stepping on the soles of the feet is formed with a mat (straw mat woven with rush). Therefore, when using the step mat for swing practice of the present invention to perform swing practice and twist the waist, one can easily and surely feel the feeling of accumulating the torsional force when the toes are firmly clasped on the tatami surface and twisting the waist, and the feeling of releasing the torsional force when the toes are loosened from the tatami surface. Therefore, toes can be effectively trained.

In addition, the portion corresponding to the base material (middle material) in general tatami mats is formed by compressing wood fiber and heat-insulating boards, etc. On the other hand, the portion corresponding to the base material (middle material) in the swing practice foot mat of the present invention has a structure in which a plurality of mat surfaces (mats woven with rush grass) are piled up. In other words, not only the surface material, but also the base material (middle material) is formed by the mat. Therefore, moderate softness can be imparted to the step mat for swing practice, and the conformability to the sole of the foot is better than that of standing on a general tatami mat. Thereby, the toe can be easily fastened firmly on the surface material (mat surface), and the above-mentioned twisting force can be easily made by the waist. In this way, the core muscles can also be effectively exercised. In addition, since such softness can be imparted to the practice swing mat, even when the practice swing mat is installed on an uneven installation surface (an uneven installation surface) such as the ground, the practice swing mat can be attached to the installation surface without being easily shifted.

In the step mat for swing practice of the present invention, the directions of the stripes on the mat surfaces of the plurality of sheets constituting the base material may all face the same direction, but it is preferable to face in different directions. That is, it is preferable that the direction of the stripes constituting one layer of the base material and the direction of the stripes constituting the other layer of mats superimposed on the upper side or the lower side of the layer be perpendicular to each other. In this way, the rushes that make up the mats of each layer can bite each other, and the layers of the mats that are stacked together are not easy to shift. In addition, toughness can be imparted to the step mat for swing practice, so that the step mat for swing practice can not be easily broken. Furthermore, the dimensional stability of the foot pad for swing practice can also be improved.

In the step mat for swing practice of the present invention, the surface material may be directly laminated on the base material. However, if a strong person such as a professional baseball player swings on the swing practice foot mat, the surface material may be displaced in the horizontal direction relative to the base material, and the surface material may be damaged. Therefore, it is preferable to interpose between the surface material and the base material: a non-woven fabric for restraining the surface material so as not to shift horizontally with respect to the base material. In this way, the durability of the step mat for swing practice can be improved.

In the step mat for swing practice according to the present invention, it is preferable that the edge member is fixed along the periphery of the surface material and the base material. In this way, not only the appearance of the foot pad for swing practice can be improved, but also the peripheral portion of the foot pad for swing practice can be reinforced.

In the step mat for swing practice of the present invention, it is preferable that the anti-slip sheet is fixed on the lower side of the base material so that the base material does not deviate in the horizontal direction with respect to the installation surface (floor surface, etc.). The footrest for swing practice of the present invention is light-weight and easy to carry so that it can be used in a changeable place. By using the above-mentioned anti-slip sheet, even if the footrest for swing practice is made light-weight, when the footstep for swing practice is used, the footstep for swing practice can be prevented from shifting from the installation surface.

In the foot pad for swing practice of the present invention, it is attached to the bottom side of the base material and provided with a cut groove that cuts the base material transversely in a predetermined direction, and it is preferable that the entire foot pad can be folded using the cut groove as a folding line. In this way, when the step mat for swing practice is not in use, it can be folded into a compact size for easy storage. In addition, when carrying the step mat for swing practice, the step mat for swing practice can also be folded so as to be compact and miniaturized for easy portability.

However, if the structure having the above cut groove is adopted, when the practice swing mat is used (during swing practice), the load is likely to be concentrated on the cut groove, and there is a risk of fracture along the cut groove in the practice swing mat. Therefore, it is preferable to stick a reinforcing surface material on the bottom side of the base material along the cut groove. In this way, the durability of the step mat for swing practice can be maintained even if the base material is provided with cut grooves. [Effect of Invention]

As described above, according to the present invention, it is possible to provide a foot mat for swing practice that can provide a feeling like swinging on a tatami mat. In addition, it is possible to provide a method of manufacturing such a step mat for swing practice.

The preferred embodiment of the foot pad for swing practice of the present invention will be described in more detail with reference to the drawings. Hereinafter, three examples of the first embodiment to the third embodiment will be given to describe the foot pad for swing practice of the present invention, but the technical scope of the foot pad for swing practice of the present invention is not limited to only these embodiments. The swing practice foot pad of the present invention can be appropriately modified as long as it does not damage the gist of the invention.

1. Foot mat for swing practice according to the first embodiment First, the step mat for swing practice of the first embodiment will be described. FIG. 1 is a perspective view showing a swing practice using the swing practice foot mat 1 of the first embodiment. FIG. 2 is an exploded perspective view showing the layer structure of the swing practice foot pad 1 of the first embodiment. Fig. 3 is an enlarged cross-sectional view showing a state in which the swing practice foot pad 1 of the first embodiment is cut along a plane perpendicular to it.

As shown in FIG. 1 , the swing practice foot mat 1 of the present invention is an article for standing on it for swing practice. Such a foot mat 1 for swing practice is used in a state of being laid on a floor surface or a ground (installation surface). As will be described later, the upper surface (the surface on which the soles of the feet step on) of this step mat 1 for swing practice is formed of a mat surface. Therefore, by using this step mat 1 for swing practice, it is possible to perform swing practice while obtaining the same feeling as when swinging a bat while standing on a tatami mat, or a better feeling than when swinging a bat while standing on a tatami mat. In this way, the swing speed and the like can be efficiently increased, and the swing power can be effectively improved.

The shape (shape when viewed from above) of the step mat 1 for swing practice is not particularly limited. The swing practice foot pad 1 of the first embodiment is made into a rectangular shape (rectangular shape) though its shape when viewed from above is made into a rectangular shape (rectangular shape), but it can also be adopted: other shapes such as a triangular shape, a square shape, a trapezoidal shape, a rhombus shape, or an elliptical shape.

The size of the step mat 1 for bat swing practice is designed such that even if the bat is swung while standing on the mat, both feet will not protrude or step out. For example, take a baseball swing (strike practice) as an example. When the body weight moves from the pivot foot (the right foot in the case of a right hitter) to the front foot (the left foot in the case of a right hitter) (when stepping hard), in most cases, step on the front foot at a distance of 50 cm or more from the pivot foot. In addition, even in the golf swing, most of the feet are shoulder-width apart (about 50 cm). Therefore, it is necessary to ensure that the vertical length (the length along the major axis direction) of the step mat 1 for swing practice is 50 cm or more. The vertical length of the foot pad 1 for swing practice is preferably set at more than 80cm, more preferably more than 100cm.

In addition, the size of a human foot (the length from the ankle to the toe) is mostly 25 cm or more. Therefore, it is better to ensure the lateral length (the length along the minor axis direction) of the step mat 1 for swing practice to be 30 cm or more. The horizontal length of the foot pad 1 for swing practice is better to be set at more than 40cm, more excellent more than 45cm.

However, if the size of the step mat 1 for swing practice is too large, the step mat 1 for swing practice will be too large and not convenient for carrying. Therefore, the vertical length of the foot mat 1 for swing practice is usually set at 200 cm or less, and the horizontal length of the swing practice foot mat 1 is usually set at 100 cm or less. The practice swing mat 1 of the first embodiment is supposed to be used for baseball practice swings, so the size is set to be slightly larger. Specifically, the vertical length is set to 150 cm, and the horizontal length is set to 85 cm. On the other hand, if it is supposed to be used for golf swing practice, the size can be made smaller. Specifically, the vertical length can be set to about 120 cm, and the horizontal length can be set to about 50 cm.

The thickness of the foot pad 1 for swing practice is not particularly limited. However, if the practice swing mat 1 is too thin, it is difficult to impart core hardness and durability to the practice swing mat 1 . Therefore, the thickness of the foot pad 1 for swing practice is preferably set at 5 mm or more, and more preferably 8 mm or more. However, if the practice swing mat 1 is too thick, the practice swing mat 1 will become heavy, and it may be difficult to carry the tread mat 1 for swing practice. Therefore, the thickness of the foot pad 1 for swing practice is preferably set at 20 mm or less, more preferably 15 mm or less. The thickness of the step mat 1 for swing practice in the first embodiment is set at about 10 mm.

In addition, the weight of the step mat 1 for swing practice is not particularly limited. However, if the practice swing mat 1 is too light, not only is it difficult to impart strength to the practice swing mat 1, but also the practice foot mat 1 may move during the swing. Therefore, the weight of the foot mat 1 for swing practice is preferably set at 2 kg or more, more preferably at 3 kg or more. However, if the step mat 1 for swing practice is too heavy, the step mat 1 for swing practice is not easy to carry. Therefore, the weight of the foot pad 1 for swing practice is preferably set at 10 kg or less, and more preferably set at 7 kg or less. The practice swing mat 1 of the first embodiment (assumed to be used for baseball swing practice) has a weight of about 5 kg. On the other hand, if it is supposed to be used for golf swing practice, it can be set to about 3.5 kg.

As shown in FIG. 1 , the swing practice foot mat 1 of the first embodiment is composed of a plate-shaped foot mat body 10 and an edge member 20 attached along the periphery of the foot mat body 10 . As shown in FIG. 2 , the foot pad body 10 is composed of a surface material 11 , a base material 12 , and an anti-slip sheet 13 . In this way, the mat body 10 is made into a configuration in which a plurality of members are overlapped, and the periphery of the mat body 10 is reinforced with the edge member 20 so that the mat body 10 does not come apart.

1.1 Surface material The surface material 11 is a planar member that forms the upper surface of the foot mat body 10, and is a portion that the soles of the feet of a person performing swing practice using the foot mat 1 for swing practice directly touch. As shown in FIG. 2, this surface material 11 is formed with a mat (straw mat). The mat surface has a structure in which a plurality of rushes 11a and a plurality of warp threads 11b are cross-woven. The type of warp thread 11b can be exemplified: single-strand cotton thread, double-strand cotton thread, single-strand hemp thread or double-strand hemp thread, etc., and in the step mat 1 for swing practice in the first embodiment, single-strand cotton thread or double-strand cotton thread is used as the warp thread 11b.

On the other hand, the rush used for the mat is generally cut to a length of about 100~150cm, and the long rush is better in appearance than the short rush. In addition, the mat surface can be divided into "mesh table" type mat surface in which one warp thread is woven into one mesh, and "boom table" type mat surface in which two warp threads are weaved in one mesh. Among them, the "bime table" type mat surface is not only superior in durability, but also has a deeper mesh, so it is very suitable for use as the surface material 11 of the foot pad 1 for swing practice.

Furthermore, the weaving density of rushes is set at about 4,000 in general mats (mats of popular products), but the weaving density of rushes is set at 5,000 or more, more preferably 6,000 or more in the mats used as the surface material 11 of the step mat 1 for swing practice. In this way, not only the aesthetic appearance of the surface material 11 can be improved, but also the durability of the surface material 11 can be improved. In the foot mat 1 for swing practice according to the first embodiment, a mat having a weaving density of 6,500 threads is used as the mat for forming the top sheet 11 .

As shown in FIG. 1 , by forming the surface material 11 with a mat surface, the convex portion α ₁ where the rush 11a protrudes upward and the groove portion α ₂ where the rush 11a is depressed downward can be repeatedly formed on the surface (upper surface) of the surface material 11 . In addition, fine grooves (stripes) can be formed at the borders of adjacent rushes 11a. By standing on the top sheet material 11 having such a surface structure and swinging with bare feet, it is possible to effectively exercise the toes. In addition, you can also exercise the core muscles.

1.2 Substrate

The base material 12 is a plate-shaped member supported from the lower surface side of the surface material 11 . The surface material 11 may also be provided in a state of being simply overlaid on the base material 12 . However, in this case, the surface material 11 (especially the central part farther away from the edge member 20) will protrude upward from the base material 12, and the surface material 11 will deviate in the horizontal direction relative to the base material 12, which will easily cause wear on the lower surface of the surface material 11 and the upper surface of the base material 12. Therefore, there is a possibility that the durability of the step mat 1 for swing practice may be reduced.

Therefore, it is preferable to fix the lower surface of the surface material 11 to the upper surface of the base material 12 . As a method of fixing the surface material 11 to the base material 12, a suture fixing method, an adhesive fixing method, etc. are mentioned, for example. However, if the central part of the surface material 11 (the part not covered by the edge member 20) is stitched and fixed to the base material 12, the sutures will be exposed on the upper surface side of the surface material 11, and there is a possibility that the aesthetic appearance of the foot mat 1 for swing practice will be deteriorated. Therefore, in the step mat 1 for swing practice of the first embodiment, the surface material 11 is adhered and fixed on the base material 12 . The adhesive used may, for example, be a latex type adhesive, a solvent type adhesive, or a reactive type adhesive.

However, if a thick adhesive is applied to the lower surface of the surface material 11 or the upper surface of the base material 12, the air permeability of the swing practice foot pad 1 will be hindered, and the swing practice foot pad 1 may become moldy. Therefore, it is preferable that the adhesive is applied in a thinly stretched state to such an extent that the air permeability of the step mat 1 for swing practice is not hindered. In the step mat 1 for swing practice of the first embodiment, a latex type adhesive is sprayed thinly with a spray gun.

The base material 12 has a multi-layer structure in which a plurality of sheets are stacked. The swing practice foot mat 1 of the first embodiment, as shown in FIGS. 2 and 3 , is composed of three layers of a first base material 12a, a second base material 12b, and a third base material 12c.

In this way, not only the surface material 11 but also the base material 12 arranged on the lower surface side is formed as a mat surface, and in this way, moderate softness can be imparted to the step mat 1 for swing practice. Therefore, the soles of the feet can be easily attached to the step pad 1 for swing practice, and the surface material (mat surface) can be fastened firmly to the toes. Therefore, the aforementioned torsional force can be easily experienced. In addition, the fragrance of rush rush can also be revealed.

The first base material 12a, the second base material 12b, and the third base material 12c constituting the base material 12 may be overlapped with each other, but they are usually fixed to each other and integrated. The method for fixing the first base material 12a, the second base material 12b, and the third base material 12c to each other includes, for example, a suture fixing method, an adhesive fixing method, and the like. Unlike the above-mentioned case of fixing the surface material 11 to the base material 12, even if the first base material 12a, the second base material 12b, and the third base material 12c are stitched and fixed, the stitches are not exposed to the outside. Therefore, the fixing method of the first base material 12a, the second base material 12b and the third base material 12c can also be very suitably adopt the suture fixing method.

In the foot pad 1 for swing practice of the first embodiment, the first base material 12a, the second base material 12b, and the third base material 12c are bonded to each other first, and then sewn and fixed. In this way, the first base material 12a, the second base material 12b and the third base material 12c can be firmly integrated, and the durability of the base material 12 can be improved. As for the method of adhesive bonding, the same method as the above-mentioned adhesive bonding of the surface material 11 to the base material 12 can be used. In addition, the suture fixation method is to suture in a straight line at intervals of around 20cm (intervals of 10-30cm).

Incidentally, the surface material 11 and the base material 12 (the first base material 12a, the second base material 12b, and the third base material 12c) formed of a mat surface all have stripes along the direction of the rush, and in the step mat 1 for swing practice according to the first embodiment, the direction of the stripes of the first base material 12a and the direction of the stripes of the surface material 11 are arranged differently. Specifically, as shown in FIG. 2 , the direction of the stripes of the surface material 11 is changed by 90° with respect to the direction of the stripes of the first base material 12 a. Therefore, the lower surface of the surface material 11 bites into the upper surface of the first base material 12a, and the surface material 11 is less likely to deviate in the horizontal direction with respect to the first base material 12a.

Also, based on the same reason, the directions of the stripes of the first base material 12a, the second base material 12b, and the third base material 12c constituting the base material 12 are arranged differently. Specifically, as shown in FIG. 2, the direction of the stripes of the second substrate 12b is changed by 90° relative to the direction of the stripes of the first substrate 12a, and the direction of the stripes of the third substrate 12c is changed by 90° relative to the direction of the stripes of the second substrate 12b.

In this way, the direction of the stripes forming one of the layers of the base material 12 is configured to be perpendicular to the direction of the stripes of the mats forming other layers overlapping on the upper or lower side of the layer (perpendicularly intersecting). In this way, the rushes forming the mats of each layer can be bitten into each other, and the layer-to-layer deviation between the mats of each layer can be prevented. In addition, core hardness can be imparted to the foot mat 1 for swing practice, and the dimensional stability of the foot mat 1 for swing practice can also be improved.

In the foot mat 1 for swing practice of the first embodiment, although the base material 12 is composed of three mat surfaces, the number of mat surfaces constituting the base material 12 is not limited to three. However, if the number of sheets constituting the mat surface of the base material 12 is too large, the manufacturing cost of the foot mat 1 for swing practice will increase. In addition, the step mat 1 for swing practice becomes too heavy, and the step mat 1 for swing practice becomes difficult to carry. Therefore, the number of sheets constituting the mat of the base material 12 is usually set at 10 or less. The number of sheets constituting the mat of the base material 12 is preferably set at 7 or less, more preferably 5 or less.

1.3 Anti-slip The anti-slip sheet 13 is a planar member for forming the lower surface (bottom surface) of the foot mat body 10, and is used to prevent the swing practice foot mat 1 from being displaced in the horizontal direction relative to the floor surface (installation surface). In this way, the installation stability of the practice swing mat 1 can be improved, and the practice swing mat 1 will not move even when standing on the upper side of the practice foot mat 1 and swinging strongly.

The material of the non-slip sheet 13 is not particularly limited as long as it has a higher coefficient of friction with respect to an installation surface such as a floor surface than a mat surface. As the non-slip sheet 13, a nonwoven fabric, a rubber sheet, etc. can be mentioned, for example. A plurality of anti-slip protrusions may be provided on the lower surface of the anti-slip sheet 13 . The anti-slip sheet 13 used in the swing practice foot pad 1 of the first embodiment is a thin sheet that embeds many anti-slip protrusions 13a (please refer to Fig. 6 (b) and Fig. 6 (c) described later) made of latex materials on the non-woven fabric.

1.4 Edge components The edge member 20 can not only improve the appearance aesthetics of the foot pad for swing practice 1, but also has the function of reinforcing the peripheral portion of the foot pad for swing practice 1 (the foot pad body 10). That is, as mentioned above, the foot pad body 10 has a structure in which a plurality of mat surfaces (the surface material 11, the first base material 12a, the second base material 12b, and the third base material 12c) are stacked together. Therefore, by covering the edges of these mat surfaces with the edge member 20, not only will the cut ends of these edge portions not be exposed, but also the cut ends can be protected from abrasion.

The material used for the edge member 20 is not particularly limited, but it is preferable to use a material used as a "tatami edge" in general tatami mats (for example: a woven fabric made of natural yarn (cotton yarn, hemp yarn, etc.), or a woven fabric made of synthetic yarn and wax-impregnated). In this way, the appearance of the step mat 1 for swing practice can be made to look high-end. The edge member 20 can be made plain without a pattern, or can be made with a pattern. The edge member 20 is fixed on the foot pad body 10 by means of nailing, sewing or adhesive. Although on general tatami mats, the tatami edge (edge member 20) is only installed along the long side, but the swing practice foot mat 1 of the first embodiment is then also installed with the edge member 20 along the wall side of the short side.

1.5 Purpose The swing practice foot mat 1 of the first embodiment described above can be used for various swing (swing) exercises. In addition to baseball swing (strike) practice, this swing practice foot pad 1 can also be very suitable for golf swing practice or tennis swing practice. The foot mat 1 for swing practice of the first embodiment is portable, so it can be carried to a place where it is needed to perform swing (swing) practice. Also, when not in use, it can be stored in a place where it does not get in the way.

2. Foot mat for swing practice according to the second embodiment Next, a step mat for swing practice according to a second embodiment will be described. With regard to the foot step mat for swing practice of the second embodiment, only the structure different from the step mat for swing practice of the first embodiment ( FIGS. 1 to 3 ) of the above-mentioned first embodiment will be described. The configurations not particularly mentioned in the swing practice foot mat of the second embodiment may be the same as those described in the swing practice foot mat 1 of the first embodiment.

Fig. 4 is an exploded perspective view showing the layered structure of the swing practice foot pad 1 of the second embodiment. Fig. 5 is an enlarged cross-sectional view showing a state in which the foot pad 1 for swing practice according to the second embodiment is cut along a plane perpendicular to it.

The swing practice foot pad 1 of the first embodiment, as shown in FIGS. 2 and 3 , is not interposed between the surface material 11 and the base material 12, but the lower surface of the surface material 11 and the upper surface of the base material 12 (the upper surface of the first base material 12a) are directly adhered and fixed together. In addition, the direction of the stripes forming the mat surface of the surface material 11 and the direction of the stripes forming the mat surface of the first base material 12a are oriented in different directions, so that the rush forming the mat surface of the surface material 11 and the rush forming the mat surface of the first base material 12a bite into each other, so that the surface material 11 does not deviate in the horizontal direction relative to the base material 12. However, when a strong player such as a professional baseball player swings on the step mat 1 for swing practice, the surface material 11 may be rubbed against the first base material 12a due to the sliding of the surface material 11 against the first base material 12a and may be damaged.

On the other hand, the foot mat 1 for swing practice of the second embodiment, as shown in FIGS. Therefore, the surface material 11 is less likely to slide relative to the first base material 12a, and friction between the surface material 11 and the first base material 12a is less likely to occur. Therefore, the durability of the swing practice foot mat 1 can be improved. In addition, the cushioning properties of the foot mat body 10 (the foot mat for swing practice 1 ) can be improved, and the foot mat body 10 can be made to fit more snugly on the soles of the feet.

The upper surface of the nonwoven fabric 14 for surface sheet restraint is fixed to the lower surface of the surface sheet 11, and the lower surface is fixed to the upper surface of the base material 12 (the upper surface of the first base material 12a). The method for fixing the nonwoven fabric 14 for surface sheet restraint to the surface sheet 11 and the first base material 12a is not particularly limited. The surface sheet restraining nonwoven fabric 14 can be fixed by, for example, the same method as that used for fixing the surface sheet 11 and the base material 12 in the swing practice foot mat 1 of the first embodiment. In the step mat 1 for swing practice in the second embodiment, a thin layer of latex adhesive is applied on the lower surface of the surface material 11 or almost the entire upper surface of the non-woven fabric 14 for restraining the surface material, and almost the entire upper surface of the upper surface of the first base material 12a, so as to adhere and fix these components together.

3. Foot mat for swing practice according to the third embodiment Next, a step mat for swing practice according to a third embodiment will be described. With regard to the step mat for swing practice of the third embodiment, only the structure different from the step mat for swing practice of the first embodiment ( FIGS. 1 to 3 ) and/or the step mat for swing practice of the second embodiment ( FIGS. 4 and 5 ) will be described. The structures not particularly mentioned in the foot step mat for swing practice of the third embodiment can adopt the same structure as that described in the foot step mat 1 for swing practice of the first embodiment and/or the foot step mat 1 for swing practice of the second embodiment.

FIG. 6 is a perspective view showing step by step the swing practice foot mat 1 according to the third embodiment when it is folded. Fig. 7 is an enlarged cross-sectional view showing a state in which the periphery of the cut groove β of the swing practice foot mat 1 according to the third embodiment is cut in a plane perpendicular to the surface of the swing practice foot mat 1 .

As shown in FIG. 6 , in the step mat 1 for swing practice according to the third embodiment, a cut groove β is provided on the bottom surface side of the base material 12 . This cut groove β is formed in a state in which the base material 12 is transversely cut along the short side direction. Also, as shown in FIG. 7 , the cut groove β is provided to penetrate the base material 12 (the first base material 12 a , the second base material 12 b , and the third base material 12 c ) in the thickness direction. The anti-slip sheet 13 and the surface material restraining nonwoven fabric 14 are also cut at the place overlapping with the cut groove β. Only the place where the surface material 11 overlaps with the cut groove β still keeps the state of being connected.

By adopting this structure, the swing practice foot pad 1 of the third embodiment can be cut into the groove β as a folding line, and folded into the state (folded state) shown in FIG. 6( c) from the state (expanded state) shown in FIG. Therefore, when storing or transporting the foot mat 1 for swing practice, the foot mat 1 for swing practice can be folded down to a compact size.

However, if the cut groove β is provided in the base material 12, when standing on the swing practice foot pad 1 and swinging, the load applied to the swing practice foot pad 1 from the sole of the foot will easily concentrate on the cut groove β. Therefore, the surface material 11 may be broken along the cut groove β. In view of this point, the swing practice foot pad 1 of the third embodiment is as shown in Fig. 6 (b), Fig. 6 (c) and Fig. 7, in the place along the cut groove β on the lower surface side of the base material 12, a face material 15 for reinforcement is pasted. Therefore, the place along the cut groove β of the surface material 11 is not easy to break.

As the reinforcing surface material 15, cloth with high tensile strength is usually used. Examples of such fabrics include knitted fabrics woven from natural yarns and/or synthetic yarns. As shown in FIG. 7 , this reinforcing surface material 15 is placed across the base material 12 (third base material 12c) on both sides of the cut groove β, and the upper surface of the reinforcement surface material 15 is adhered and fixed to the lower surface and end surface of the base material 12, and the lower surface of the overlapping portion of the surface material 11 with the cut groove β, thereby reinforcing the swing practice foot pad 1 along the cut groove β.

By the way, after the base material 12 is cut along the cut groove β as described above, when the swing practice foot pad 1 is unfolded (FIG. 6(a)), the cut end surface _γ1 (FIG. 7) and the cut end surface _γ2 (FIG. 7) of the base material 12 will be butted against each other. Therefore, if the cut end surfaces γ ₁ and γ ₂ are not formed into flat surfaces in advance (smoothing treatment), when the swing practice mat 1 is unfolded, the place along the cut groove β of the swing practice mat 1 will bulge, and the swing practice mat 1 will become uneven. However, when cutting such a stack of mat surfaces of the base material 12, it is not easy to cut the cut end faces into a flat shape. In particular, as shown by the cut end surface δ _a in FIG. 4 , it is not easy to cut the rush 11 a forming the mat surface flat and clean along the long axis direction thereof. On the other hand, as shown by the cut end surface δ _b in FIG. 4 , it is easy to cut the rush 11 a forming the mat surface so as to be flat and clean in a direction perpendicular thereto.

In this regard, the swing practice foot mat 1 of the third embodiment is similar to the swing practice foot mat 1 of the second embodiment (FIG. 4), the stripes on the mat surfaces of the layers of the base material 12 (the first base material _12a , the second base material _12b , and the third base material 12c) are oriented in different directions from each other, and among the cut end faces γ1 and γ2 (FIG. 7), the cut end faces _δb ( 4 ), and the second base material 12b disposed between the first base material 12a and the third base material 12c is a cut end surface δ _a ( FIG. 4 ) which is relatively difficult to planarize. In this way, the layers that are less likely to be planarized are sandwiched between the layers that are easier to be planarized, so that the cut end faces γ ₁ , γ ₂ as a whole become easier to planarize. Therefore, the practice swing mat 1 can be manufactured so that the portion of the practice swing mat 1 along the cut groove β does not bulge when the foot mat 1 for swing practice is unfolded.

The structure of the foot pad 1 for swing practice in the third embodiment is that only one cut groove β is provided to fold the foot pad 1 for swing practice into two halves. However, the number of cut grooves β and the folded form of the swing practice step mat 1 are not limited thereto. For example, two cut grooves β parallel to each other may be provided at predetermined intervals, and the foot pad 1 for swing practice may be folded into three pieces.

1: Foot mat for swing practice 10: Foot mat body 11: Surface material 11a: Rush 11b: Warp thread 12: Base material 12a: First base material 12b: Second base material 12c: Third base material 13: Anti-slip sheet 13a: Anti-slip protrusion 14: Nonwoven fabric for surface material restraint 15: Reinforcement surface material 20: Edge member α ₁ : Convex part α ₂ : Groove part β: Cut groove γ: Folding boundary department

[FIG. 1] It is a perspective view which shows the state of swing practice using the swing practice foot mat of 1st Embodiment. [ Fig. 2] Fig. 2 is an exploded perspective view showing the layered structure of the step mat for swing practice according to the first embodiment. [ Fig. 3 ] is an enlarged cross-sectional view showing a state in which the step mat for swing practice according to the first embodiment is cut along a plane perpendicular to it. [ Fig. 4] Fig. 4 is an exploded perspective view showing a layered structure of a foot mat for swing practice according to a second embodiment. [ Fig. 5 ] is an enlarged cross-sectional view showing a state in which the step mat for swing practice according to the second embodiment is cut along a plane perpendicular to it. [ Fig. 6] Fig. 6 is a perspective view showing, step by step, how the step mat for swing practice according to the third embodiment is folded. [ Fig. 7 ] is an enlarged cross-sectional view showing a state in which the periphery of the cut groove of the swing practice foot mat according to the third embodiment is cut in a plane perpendicular to the surface of the swing practice foot rest.

1: Foot mat for swing practice

10: Foot pad body

11: surface material

11a: Rush

11b: Warp

12: Substrate

12a: first substrate

12b: Second substrate

12c: The third substrate

13: Anti-slip sheet

Claims (8)

A foot pad for bat swing practice, which has: surface material for treading on, and The base material that is fixed on the lower side of the surface material and supports the surface material from the lower side is characterized by: the surface material is formed by matting, and The base material is a structure in which a plurality of sheets are stacked. The foot pad for swing practice as described in Claim 1, wherein, among the plurality of mats used to form the base material, the direction of the stripes forming one of the mats of one layer is perpendicular to the direction of the stripes of the mats forming other layers superimposed on the upper or lower side of the layer. The step mat for swing practice according to Claim 1 or Claim 2, wherein, between the surface material and the base material, there is interposed: a non-woven fabric for restraining the surface material, which is used to prevent the surface material from shifting in the horizontal direction relative to the base material. In the step mat for swing practice according to Claim 1 or Claim 2, the edge member is fixed along the peripheral edge portions of the surface material and the base material. The step mat for swing practice as described in claim 1 or claim 2, wherein the lower side of the base is fixed with an anti-slip sheet for preventing the base from shifting in the horizontal direction relative to the installation surface. The step mat for swing practice according to Claim 1 or Claim 2, wherein, on the bottom side of the base material, there is provided a cut groove cross-cutting the base material in a predetermined direction, and the whole can be folded using the cut groove as a folding line. The step mat for swing practice as described in claim 6, wherein, on the lower side of the base material along the cut groove, a reinforcing surface material is pasted. A method of manufacturing a foot pad for swing practice, which is used to manufacture the foot pad for swing practice according to any one of claim 1 to claim 7.

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