Foot curling tool

The foot curling tool addresses the risk of injury from hard stones by using a foamed resin pseudo-stone and a harder slide portion, ensuring safety and a smooth sliding experience.

JP3251647UActive Publication Date: 2025-06-17SANWA SEISAKUSHO
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Patent Information

Application Number
JP2025001181U
Authority / Receiving Office
JP · JP
Patent Type
Utility models
Current Assignee / Owner
Filing Date
2025-04-16
Publication Date
2025-06-17
Estimated Expiration
2035-04-16

AI Technical Summary

Technical Problem

Conventional stones used for floor curling competitions are hard and lack cushioning properties, posing a risk of injury to children when used as teaching tools for foot curling.

Method used

A foot curling tool featuring a pseudo-stone main body formed by foaming a resin material, providing cushioning properties, and a slide portion made of a harder resin material, designed to reduce impact and enhance safety while allowing smooth sliding motion.

Benefits of technology

The tool effectively reduces the risk of foot injury by distributing impact and providing cushioning, while also enabling a smooth sliding motion that mimics real curling, thus achieving both safety and entertainment.

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Abstract

Provided is a foot curling tool that can avoid the risk of the user hurting their foot even when the user kicks a pseudo stone, which is a foot curling tool, with their foot. 【Solution means】The foot curling tool 100 includes a pseudo stone main body portion 110 that is formed by foaming a resin material and is circular in plan view and has a thickness in the height direction, and a slide portion 120 that is disposed below the pseudo stone main body portion 110 and is formed of a resin material harder than the pseudo stone main body portion 110. As a result, since the pseudo stone main body portion 110 is formed by foaming a resin material and has cushioning properties and is relatively soft, when the user kicks the pseudo stone, which is the foot curling tool 100, with their foot, the user's foot hits the side of the pseudo stone main body portion 110, and the impact at that time can be made relatively small, and the risk of the user hurting their foot can be avoided.
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Description

Technical Field

[0001] The present invention relates to a foot curling tool using a pseudo stone.

Background Art

[0002] Conventionally, a stone for floor curling competition is known in order to enjoy curling, which is a sport on ice, even outside of ice (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, since the conventional stone for floor curling competition described above has a configuration with a hard stone body, it does not have cushioning properties. When used in a game using the feet as a teaching material for children, with the conventional stone for floor curling competition, there is a risk that the stone is too hard and may hurt the children's feet, or that the children may get injured when they step on the stone with their feet.

[0005] Therefore, the present invention solves the problems of the prior art as described above. That is, the object of the present invention is to make it possible to relatively reduce the impact when the user kicks a pseudo stone, which is a foot curling tool, with the foot, and the impact hits the side of the pseudo stone body portion, and to provide a foot curling tool that can avoid the risk of hurting the user's foot.

Means for Solving the Problems

[0006] The invention according to claim 1 is a foot curling tool using a pseudo stone, which is composed of a pseudo stone main body formed by foaming a resin material, circular in plan view and having a thickness in the height direction, and a slide portion disposed below the pseudo stone main body and formed of a resin material harder than the pseudo stone main body, thereby solving the above-mentioned problems.

[0007] The invention according to claim 2, in addition to the configuration of the foot curling tool described in claim 1, further solves the above-mentioned problems by having a configuration in which the contour of the slide portion is circular in plan view and protrudes laterally from the pseudo stone main body.

[0008] The invention according to claim 3, in addition to the configuration of the foot curling tool described in claim 2, further solves the above-mentioned problems by having a configuration in which the slide portion has a mesh structure.

[0009] The invention according to claim 4, in addition to the configuration of the foot curling tool described in claim 3, further solves the above-mentioned problems by having a configuration in which the foamed resin material of the pseudo stone main body penetrates into the meshes of the mesh structure of the slide portion.

[0010] The invention according to claim 5, in addition to the configuration of the foot curling tool described in any one of claims 1 to 4, further has a handle portion, and the handle portion engages with a hole provided on the upper surface of the pseudo stone main body, thereby further solving the above-mentioned problems.

Advantages of the Invention

[0011] According to the foot curling tool of the invention according to claim 1, since the pseudo-stone main body is formed by foaming a resin material and has cushioning properties and is relatively soft, when the user kicks the pseudo-stone, which is the foot curling tool, with the foot, the user's foot hits the side of the pseudo-stone main body, and the impact at that time can be made relatively small, and the risk of the user hurting the foot can be avoided. Furthermore, even when the user steps on the pseudo-stone, which is the foot curling tool, with the foot, since the pseudo-stone main body is formed by foaming a resin material and has cushioning properties and is relatively soft, the risk of the user getting injured can be avoided. Also, on the floor of the school gymnasium or the floor of the school corridor, or on a resin foot curling coat such as made of polyvinyl chloride placed on those floors, the friction coefficient between the slide part and the pseudo-stone main body part tends to be small. Therefore, when the user kicks the pseudo-stone, which is the foot curling tool, with the foot, compared with a configuration without a slide part, the slide movement of the pseudo-stone, which is the foot curling tool, can be made smooth, and the user can enjoy it like real curling on the floor or the foot curling coat. That is, in order to make the slide movement of the pseudo-stone smooth, the slide part is made harder than the pseudo-stone main body part. However, when the user kicks the pseudo-stone, which is the foot curling tool, with the foot, the user's foot hits the soft pseudo-stone main body part instead of the hard slide part. Therefore, both safety and entertainment can be achieved.

[0012] According to the foot curling tool of the invention according to claim 2, in addition to the effects achieved by the invention according to claim 1, when one pseudo-stone, which is a foot curling tool, collides with another pseudo-stone, the relatively hard slide part of one pseudo-stone and the relatively hard slide part of another pseudo-stone collide, and a sound of relatively hard objects hitting each other is generated. Therefore, even if the pseudo-stone main body has cushioning properties and is a relatively soft pseudo-stone, a collision sound like that of real curling can be obtained and enjoyed. That is, when the pseudo-stone main body parts that are softer than the slide parts collide with each other, it will produce a sound like that of relatively soft objects colliding. However, when the pseudo-stone collides with other pseudo-stones, the slide parts will always collide with each other, generating a sound like that of relatively hard objects colliding. Therefore, a collision sound similar to that of real curling can be obtained and enjoyed. Furthermore, when the pseudo-stone collides with other pseudo-stones, the main body part of the pseudo-stone can be visually recognized by the user, but the slide part cannot be visually recognized. Therefore, even when the main body part of the pseudo-stone is formed into a relatively soft foam for safety considerations, a sound like that of hard objects colliding can be generated to create a surprising effect. Also, by making the slide parts, which are harder than the main body parts of the pseudo-stones, collide with each other, the coefficient of restitution tends to be higher compared to the case where the main body parts of the pseudo-stones, which are softer than the slide parts, collide with each other. Therefore, like in real curling, when the pseudo-stone collides with other pseudo-stones, it can bounce other pseudo-stones away.

[0013] According to the foot curling implement of the invention according to claim 3, in addition to the effects achieved by the invention according to claim 2, compared with the configuration where the slide part has a flat sheet structure instead of a mesh structure, the contact area between the slide part and the floor or the foot curling coat becomes smaller, and the sliding movement of the pseudo-stone becomes smoother. Therefore, it can be enjoyed even more like real curling.

[0014] According to the foot curling implement of the invention according to claim 4, in addition to the effects achieved by the invention according to claim 3, since the foamed resin material of the main body part of the pseudo-stone enters the meshes of the mesh structure of the slide part and at least a part of the meshes of the mesh structure is filled, when there are foreign objects such as small dust on the floor or the foot curling coat during the sliding movement of the pseudo-stone, the risk of the foreign objects entering the meshes of the mesh structure can be avoided, and the risk of the smoothness of the sliding movement of the pseudo-stone being lost can be avoided. That is, since the space inside the mesh structure becomes shallower, it is possible to avoid the risk that the mesh structure becomes clogged with foreign matter and the frictional resistance increases.

[0015] According to the foot curling tool of the invention according to claim 5, in addition to the effects achieved by the invention according to any one of claims 1 to 4, the handle part can be held by the user's hand, and the operation of the pseudo-stone, which is a foot curling tool, by hand becomes possible. Therefore, the user can operate and enjoy the pseudo-stone, which is a foot curling tool, with their hand instead of their foot. That is, like real curling, the pseudo-stone, which is a foot curling tool, can slide freely by hand operation, so it can be enjoyed like real curling. Furthermore, due to the presence of the handle, the pseudo-stone, which is a foot curling tool, looks like a real curling stone, so the pseudo-stone, which is a foot curling tool, can be made to look as cool as a real curling stone.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0017] The foot curling tool of the present invention is configured to include a pseudo-stone main body portion that is formed by foaming a resin material, is circular in plan view, and has a thickness in the height direction, and a slide portion that is disposed below the pseudo-stone main body portion and is formed of a resin material harder than the pseudo-stone main body portion. When a user kicks the pseudo-stone, which is the foot curling tool, with the foot, the user's foot hits the side of the pseudo-stone main body portion, and the impact at that time can be made relatively small, so that the risk of the user hurting the foot can be avoided. Further, even when the user steps on the pseudo-stone, which is the foot curling tool, with the foot, the risk of the user getting injured can be avoided. When the user kicks the pseudo-stone, which is the foot curling tool, with the foot, compared with a configuration without a slide portion, the sliding movement of the pseudo-stone, which is the foot curling tool, can be made smooth, and the user can enjoy it like real curling on the floor or on a foot curling court. As long as it can achieve both safety and entertainment, the specific implementation mode can be any one.

[0018] For example, the material of the pseudo-stone main body portion may be any material as long as it is formed by foaming a resin material such as urethane foam or polyethylene foam and has at least some cushioning properties. Also, the material of the slide portion may be any resin material harder than the pseudo-stone main body portion, such as plastic.

Example

[0019] Hereinafter, the foot curling tool 100 according to an embodiment of the present invention will be described with reference to FIGS. 1(A) to 4(C). Here, FIG. 1(A) is a perspective view showing an example of a foot curling tool 100 according to an embodiment of the present invention, FIG. 1(B) is a perspective view showing the foot curling tool 100 on a foot curling coat CT, FIG. 2(A) is a side view showing an example of the foot curling tool 100 according to an embodiment of the present invention, FIG. 2(B) is a side sectional view showing an example of the foot curling tool 100 according to an embodiment of the present invention, FIGS. 3(A) to (C) are side views showing a state where the foot curling tool 100 according to an embodiment of the present invention collides with another foot curling tool 100, FIG. 4(A) is a bottom view viewed from the reference numeral 4A shown in FIG. 2(A), and FIG. 4(B) is an enlarged sectional view of a main part at the position of the reference numeral 4B shown in FIG. 2(B).

[0020] As shown in FIGS. 1(A) to 2(B), the foot curling tool 100 according to an embodiment of the present invention includes a pseudo-stone main body portion 110 and a slide portion 120. Among these, the pseudo-stone main body portion 110 is circular in plan view and has a thickness in the height direction, and is formed by foaming a resin material. As an example, the pseudo-stone main body portion 110 is formed of foamed polyethylene. And in this embodiment, the pseudo-stone main body portion 110 has, as an example, a color portion 111, a first foamed resin portion 112, and a second foamed resin portion 113.

[0021] The color portion 111 has a red or blue color and can distinguish whether it is a pseudo-stone of the opposing team or a pseudo-stone of the teammate's team. The color portion 111 may be formed of foamed polyethylene of a red or blue color, or may be a layer colored on the upper surface of the first foamed resin portion 112 with red or blue paint. Further, the slide portion 120 is disposed below the pseudo-stone main body portion 110 and is formed of a resin material harder than the pseudo-stone main body portion 110. As an example, the slide portion 120 is formed of plastic. Note that as a higher concept of the technical idea, the slide portion 120 may be circular in plan view or may not be circular in plan view. Further, the foot curling tool 100 may have a handle portion 130.

[0022] As a result, the pseudo-stone main body 110 is foam-formed of a resin material and has cushioning properties and is relatively soft. As a result, when the user kicks the pseudo-stone, which is the foot curling tool 100, with the foot, the user's foot hits the side of the pseudo-stone main body 110, and the impact at that time can be made relatively small, and the risk of the user hurting the foot can be avoided. Furthermore, even when the user steps on the pseudo-stone, which is the foot curling tool 100, with the foot, the pseudo-stone main body 110 is foam-formed of a resin material and has cushioning properties and is relatively soft. As a result, the risk of the user getting injured can be avoided.

[0023] Also, as shown in FIG. 1(B), on the floor of a school gymnasium, the floor of a school corridor, or a resin foot curling coat CT made of, for example, polyvinyl chloride placed on those floors, the coefficient of friction between the slide portion 120 and the pseudo-stone main body 110 tends to be small. As a result, when the user kicks the pseudo-stone, which is the foot curling tool 100, with the foot, compared to a configuration without the slide portion 120, the sliding movement of the pseudo-stone, which is the foot curling tool 100, can be made smooth, and the user can enjoy it like real curling on the floor or on the foot curling coat CT. That is, in order to make the sliding movement of the pseudo-stone smooth, the slide portion 120 is made harder than the pseudo-stone main body 110. However, when the user kicks the pseudo-stone, which is the foot curling tool 100, with the foot, the user's foot hits the soft pseudo-stone main body 110 instead of the hard slide portion 120. As a result, both safety and entertainment can be achieved.

[0024] Furthermore, in this embodiment, the contour of the slide portion 120 is circular in plan view. As shown in Fig. 2(A), the contour of the sliding portion 120 protrudes laterally from the pseudo-stone main body portion 110. The degree of protrusion may be slight, such as 0.5 mm.

[0025] As a result, as shown in Figs. 3(A) to 3(C), when the pseudo-stone, which is one curling tool 100, collides with another pseudo-stone, a relatively hard sliding portion 120 of one pseudo-stone collides with a relatively hard sliding portion 120 of another pseudo-stone, generating a sound of relatively hard objects hitting each other. As a result, even if the pseudo-stone main body portion 110 has cushioning properties and is a relatively soft pseudo-stone, a collision sound similar to that of real curling can be obtained and enjoyed. That is, when the relatively soft pseudo-stone main body portions 110 collide with each other, a sound of relatively soft objects hitting each other is produced. However, when the pseudo-stone collides with another pseudo-stone, the sliding portions 120 always collide with each other, generating a sound of relatively hard objects hitting each other. As a result, a collision sound similar to that of real curling can be obtained and enjoyed.

[0026] Furthermore, when the pseudo-stone collides with another pseudo-stone, the pseudo-stone main body portion 110 is visible to the user, but the sliding portion 120 is not visible. As a result, even when the pseudo-stone main body portion 110 is formed relatively softly by foaming in consideration of safety, a sound of hard objects hitting each other can be generated to create a surprising effect. Also, by making the sliding portions 120, which are harder than the pseudo-stone main body portion 110, collide with each other, the coefficient of restitution tends to be higher compared to the case where the relatively soft pseudo-stone main body portions 110 collide with each other. As a result, like real curling, when the pseudo-stone collides with another pseudo-stone, the other pseudo-stone can be repelled.

[0027] In this embodiment, as shown in FIGS. 4(A) and 4(B), the slide portion 120 has a mesh structure 121. In other words, the slide portion 120 is a plastic net. As a result, compared with the configuration in which the slide portion 120 has a flat sheet structure instead of the mesh structure 121, the contact area between the slide portion 120 and the floor or the foot curling coat CT becomes smaller, and the sliding movement of the pseudo-stone becomes smoother. For example, there are a plurality of contact portions, which result in line contact or point contact, making it easier to slide. As a result, it is possible to enjoy it more like real curling.

[0028] Furthermore, in this embodiment, as shown in FIG. 4(B), the foamed resin material of the pseudo-stone main body portion 110 has entered the meshes 121a of the mesh structure 121 of the slide portion 120. Here, the slide portion 120 of the mesh structure 121 is disposed in pressure contact with the second foamed resin portion 113 of the pseudo-stone main body portion 110 formed by foaming a resin material. Then, by, for example, adhering the side of the second foamed resin portion 113 opposite to the slide portion 120 to the first foamed resin portion 112, the pseudo-stone main body portion 110 can be configured.

[0029] As a result, the foamed resin material of the pseudo-stone main body portion 110 has entered the meshes 121a of the mesh structure 121 of the slide portion 120, and at least a part of the meshes 121a of the mesh structure 121 is filled. As a result, when there are foreign matters such as small dust on the floor or the foot curling coat CT during the sliding movement of the pseudo-stone, the risk that the foreign matters will enter the meshes 121a of the mesh structure 121 can be avoided, and the risk that the smoothness of the sliding movement of the pseudo-stone will be lost can be avoided. That is, the space in the meshes 121a of the mesh structure 121 becomes shallower. As a result, it is possible to avoid the risk that the mesh structure 121 becomes clogged at the meshes 121a due to foreign matter, increasing the frictional resistance.

[0030] Also, in this embodiment, as shown in FIGS. 1(A) to 3(C) and described above, the foot curling tool 100 further has a handle portion 130. More specifically, as shown in FIGS. 1(A) and 2(B), the handle portion 130 is configured to engage with a hole portion 114 provided on the upper surface of the pseudo-stone main body portion 110. Regarding the shape of the handle portion 130, as an example, it is formed in a quadrangular prism shape, but it may be formed in a cylindrical shape. Further, it is not limited to a configuration that extends straight upward, and it may be formed in an L shape and extend upward and then laterally.

[0031] Thereby, the handle portion 130 can be held by the user's hand, and the operation of the pseudo-stone, which is the foot curling tool 100, by hand becomes possible. As a result, the user can operate and enjoy the pseudo-stone, which is the foot curling tool 100, with their hand instead of their foot. That is, like a real curling stone, the pseudo-stone, which is the foot curling tool 100, can slide freely by hand operation. As a result, it can be enjoyed like real curling. Furthermore, due to the presence of the handle, the pseudo-stone, which is the foot curling tool 100, looks like a real curling stone. As a result, the pseudo-stone, which is the foot curling tool 100, can be made to look as cool as a real curling stone.

[0032] For the engagement of the handle portion 130, a hole portion 114 is formed in the first foamed resin portion 112 of the pseudo-stone main body portion 110, and the handle portion 130 is inserted into this hole portion 114. Here, no hole portion 114 is formed in the second foamed resin portion 113 and the slide portion 120 below the first foamed resin portion 112 of the pseudo-stone main body 110. Thereby, the handle portion 130 is configured not to penetrate the pseudo-stone main body 110 and protrude to the bottom side. As a result, it is possible to avoid a change in the slipperiness of the foot curling tool 100. Further, by providing the second foamed resin portion 113, even when the hole portion 114 is formed in the first foamed resin portion 112, the second foamed resin portion 113 can be configured to enter the meshes 121a of the mesh structure 121 of the slide portion 120.

[0033] The foot curling tool 100 which is an embodiment of the present invention thus obtained is formed by foaming a resin material and has a pseudo-stone main body 110 that is circular in plan view and has a thickness in the height direction, and a slide portion 120 disposed below the pseudo-stone main body 110 and formed of a resin material harder than the pseudo-stone main body 110. When the user kicks the pseudo-stone which is the foot curling tool 100 with the foot, the user's foot hits the side of the pseudo-stone main body 110 and the impact at that time can be made relatively small, and the risk of the user hurting the foot can be avoided. Further, even when the user steps on the pseudo-stone which is the foot curling tool 100 with the foot, the risk of the user getting injured can be avoided. When the user kicks the pseudo-stone which is the foot curling tool 100 with the foot, compared with the configuration without the slide portion 120, the sliding movement of the pseudo-stone which is the foot curling tool 100 can be made smooth and the user can enjoy it like real curling on the floor or on the foot curling court CT, achieving both safety and entertainment.

[0034] Furthermore, since the contour of the slide portion 120 is circular in plan view and protrudes laterally from the pseudo-stone main body portion 110, even if the pseudo-stone main body portion 110 has cushioning properties and is a relatively soft pseudo-stone, a collision sound similar to that of real curling can be obtained and enjoyed. Even when the pseudo-stone main body portion 110 is formed into a relatively soft foam considering safety, a sound can be generated when hard objects collide with each other to create a surprising effect. Like real curling, when a pseudo-stone collides with another pseudo-stone, it can push the other pseudo-stone away.

[0035] Also, since the slide portion 120 has a mesh structure 121, it can be enjoyed even more like real curling.

[0036] Furthermore, since the foamed resin material of the pseudo-stone main body portion 110 enters the meshes 121a of the mesh structure 121 of the slide portion 120, when there are foreign objects such as small dust on the floor or on the foot curling court CT during the sliding movement of the pseudo-stone, the risk of the foreign objects entering the meshes 121a of the mesh structure 121 can be avoided, and the risk of losing the smoothness of the sliding movement of the pseudo-stone can be avoided.

[0037] Also, the foot curling tool 100 further has a handle portion 130, and since the handle portion 130 engages with a hole portion 114 provided on the upper surface of the pseudo-stone main body portion 110, the user can operate the pseudo-stone, which is the foot curling tool 100, with their hand instead of their foot and enjoy it. The pseudo-stone, which is the foot curling tool 100, can be made to look as cool as a real curling stone, etc., and its effect is very significant.

Explanation of Reference Numerals

[0038] 100 ··· Foot curling tool 110 ··· Pseudo-stone main body portion 111 ··· Color portion 112 ··· First foamed resin part 113 ··· Second foamed resin part 114 ··· Hole part 120 ··· Slide part 121 ··· Mesh structure 121a ··· Mesh opening (of the mesh structure) 130 ··· Handle part CT ··· Coat for foot curling

Claims

1. A foot curling tool using a pseudo stone, A pseudo-stone body portion made of foamed resin material, which is circular in plan view and thick in the height direction; A foot curling tool characterized in that it is configured to include a slide portion disposed below the pseudo-stone main body and formed of a resin material harder than the pseudo-stone main body.

2. 2. The foot curling tool according to claim 1, wherein the outline of the slide portion is circular in a plan view and protrudes laterally from the pseudo stone body portion.

3. 3. The foot curling tool according to claim 2, wherein the sliding portion has a mesh structure.

4. 4. The foot curling tool according to claim 3, wherein the foamed resin material of the artificial stone body is embedded in the mesh structure of the slide portion.

5. It further has a handle portion, 5. The foot curling tool according to claim 1, wherein the handle is adapted to engage with a hole provided in an upper surface of the artificial stone body.

Citation Information

Patent Citations

  • Curling stones for floor-mounted games

    JP3222479U