Annular training apparatus

Abstract

To provide a training apparatus that can be gripped for use in a load adjustable manner for strengthening a wrist and a front arm, mainly for strengthening a muscle strength relevant to the rotation of the wrist.SOLUTION: An annular training apparatus 1 according to the present invention comprises: an outer peripheral portion 2 having an annular shape; and a grip portion 17 that has both ends thereof connected between opposed inner side walls of the outer peripheral portion 2. The outer peripheral portion 2 is formed in a tubular shape having an internal space 9 into which a fluid body is chargeable, and includes a charging portion 5 with a lid that is openable and closable for charging or discharging the fluid body.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a training device that is held and used primarily for strengthening the wrists and forearms. [Background technology]

[0002] Dumbbells have traditionally been known as equipment for training the forearms, but due to the characteristics of the equipment, they can also be used to train the wrists as a secondary function, and the training load can be adjusted by using dumbbells of different weights.

[0003] Furthermore, while the wrist is a flexible part of the body that can move over a wide range, allowing it to not only move back and forth and side to side, but also rotate, it is also a very unstable part of the body, so if the muscles in the wrist are weak, it will be difficult to grasp a tool and operate it forcefully and accurately.

[0004] Therefore, wrist training is necessary in many sports, such as baseball, golf, and badminton, where wrist training can be expected to improve performance, and there are many training devices on the market for this purpose.

[0005] In addition, when performing strength training (hereinafter referred to as "muscle training"), not just dumbbells, many tools are used that require gripping, so when performing muscle training that places a heavy load on the body, unintentional rotation of the wrist can cause wrist injury, which can interfere with muscle training.

[0006] In light of this situation, Patent Document 1, for example, discloses a dumbbell (hereinafter referred to as "dumbbell" in the following description) that can adjust the training load. The dumbbell has hollow balls connected to both sides of the grip so that water can be poured into them, and a stopper-operated filling port is provided at the top of the hollow balls, and a water volume measurement line is printed on the outer surface. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 51-078060 Summary of the Invention [Problem to be solved by the invention]

[0008] Indeed, the dumbbell described in Patent Document 1 can be used as a dumbbell of the intended weight by filling it with any amount of water, so there is no need to prepare multiple dumbbells of different weights for training.Furthermore, when training the wrist, which is particularly prone to injury, it has the advantage that the amount of water can be reduced to adjust the load to an appropriate level depending on the part of the body being trained.

[0009] However, due to the structure of dumbbells, which have heavy objects such as spheres attached to both ends of the handle, the load imposed on the user is mainly dependent on the change in potential energy caused by moving the dumbbell up and down. Therefore, filling the inside with water does not have any significant effect other than adjusting the load due to differences in weight, and it is insufficient to improve greater flexibility and muscle strength in unstable wrists, including the muscle strength involved in rotating the wrist, which is difficult to train.

[0010] The present invention has been made in consideration of the above circumstances, and aims to provide a training device that can be held and used with adjustable load to improve muscle strength related to wrist rotation, primarily by training the wrists and forearms. [Means for solving the problem]

[0011] In order to achieve the above object, the present invention provides the following.

[0012] The invention of claim 1 aims to provide a circular training device comprising a circular outer peripheral portion and a gripping portion having both ends connected between the opposing inner walls of the outer peripheral portion, wherein the outer peripheral portion is formed in a tubular shape having an internal space that can be filled with a fluid, and wherein a filling portion with a lid that can be opened and closed freely is formed to allow the fluid to be put in and taken out.

[0013] The invention of claim 2 aims to provide the circular training device described in claim 1, characterized in that the outer peripheral portion forms a passageway consisting of an opening that is a reduced cross-sectional opening of the internal space, and forms a buffer portion that allows the fluid to move inside via the passageway.

[0014] The invention of claim 3 aims to provide a circular training device as described in claim 1 or 2, characterized in that the outer peripheral portion forms a partition portion that blocks the filled fluid so that it cannot move inside.

[0015] The invention of claim 4 aims to provide the circular training device described in claim 3, characterized in that the outer peripheral portion has the partition portions formed at each of the locations where both ends of the gripping portion are connected, and also has multiple buffer portions formed therein.

[0016] The invention of claim 5 aims to provide the circular training device described in claim 4, characterized in that the buffer portion forms a columnar left-right separation portion extending in the front-to-rear direction of the outer periphery, i.e., in a direction perpendicular to the axial direction of the grip portion, and having the communication portion on the left and right sides. [Effects of the Invention]

[0017] According to the invention described in claim 1, the device comprises a circular outer peripheral portion and a gripping portion with both ends connected between the opposing inner walls of the outer peripheral portion, and the outer peripheral portion is formed in a tubular shape with an internal space that can be filled with fluid, and a filling portion with a lid that can be opened and closed freely to put in and take out the fluid is formed.As a result, the outer peripheral portion is located around the periphery of the gripping hand, so centrifugal force can be efficiently utilized in training that involves rotating the wrist, and the load can be easily adjusted by the amount of fluid filled in, and it can also be used as a substitute for dumbbells.

[0018] Furthermore, by leaving a moderate amount of space rather than filling the entire internal space of the outer periphery with fluid, it is possible to feel the movement of the fluid in the internal space due to centrifugal force when rotating around the wrist, and also to apply a moderate amount of load when inverting.

[0019] According to the invention described in claim 2, the outer peripheral portion forms a passageway consisting of an opening that reduces the cross-sectional opening of the internal space, and a buffer portion is formed that allows the fluid to move inside through the passageway.By not filling the entire internal space of the outer peripheral portion with fluid but leaving a moderate amount of space, when the wrist is rotated around the center, the fluid passing through the passageway is resisted by the buffer portion depending on the rotation speed and the amount of fluid filled, making it possible to apply a complex load.

[0020] According to the invention described in claim 3, the outer peripheral portion forms a partition portion that blocks the filled fluid so that it cannot move inside.By not filling the entire internal space of the outer peripheral portion with fluid but leaving a moderate amount of space, the fluid can be moved within the internal space using the partition portion as a base point when the wrist is rotated, and furthermore, it is possible to apply new loads by the fluid colliding with the partition portion, including during inversion movements.

[0021] According to the invention described in claim 4, the outer periphery has partition sections formed at each point where both ends of the gripping section are connected, as well as multiple buffer sections, so that the entire internal space of the outer periphery is not filled with fluid, and a moderate amount of space is left.This makes it possible to apply complex loads by allowing the fluid to move independently in the upper and lower halves of the outer periphery when rotated around the wrist.

[0022] According to the invention described in claim 5, the buffer section extends in the front-to-back direction of the outer periphery, i.e., in a direction perpendicular to the axial direction of the grip section, and forms a columnar left-right separation section with passage sections on the left and right sides.By not filling the entire internal space of the outer periphery with fluid but leaving a moderate amount of space, when the wrist is rotated, the fluid passing through the passage section moves to which side of the left-to-right separation section depending on the inclination, rotation speed, and amount of fluid filled, making it possible to enjoy training by feeling and adjusting the movement of the fluid. [Brief explanation of the drawings]

[0023] [Figure 1] 1A is a perspective view of a circular training device according to this embodiment, and FIG. 1B is a front view thereof. [Figure 2](a) is a cross-sectional view taken along line AA in FIG. 1(b), and (b) is a cross-sectional view taken along line BB. [Figure 3] 1A is a front perspective view of the circular training device according to the present embodiment, FIG. 1B is an enlarged cross-sectional view taken along line CC, and FIG. 1C is an enlarged cross-sectional view of the hollow portion of the outer periphery. [Figure 4] 1(a) is another front perspective view of the circular training device according to the present embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line DD. [Figure 5] 1(a) is another front perspective view of the circular training device according to the present embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line EE. [Figure 6] 1(a) is another front perspective view of the circular training device according to the present embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along the line FF. [Figure 7] 1(a) is another front perspective view of the circular training device according to the present embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line GG. [Figure 8] 1(a) is another front perspective view of the circular training device according to the present embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line HH. [Figure 9] 1A is a front perspective view of a circular training device having a partition according to this embodiment, and FIG. 1B is an enlarged cross-sectional view taken along line II. [Figure 10] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line JJ. [Figure 11] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line KK. [Figure 12] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line LL. [Figure 13] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line MM. [Figure 14] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line NN. [Figure 15] 1(a) is another front perspective view of the circular training device having a partition according to this embodiment, and FIG. 1(b) is an enlarged cross-sectional view taken along line OO. [Figure 16] 1A is a front perspective view showing a modified example of the grip portion of the circular training device according to the present embodiment, and FIG. 1B is a front perspective view showing a modified example of the grip portion of the circular training device having a partition according to the present embodiment. [Figure 17] 1 is an explanatory diagram showing a state in which the circular training device according to the present embodiment is used. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] The gist of the circular training device according to the present invention is that it comprises a circular outer periphery and a gripping portion with both ends connected between opposing inner walls of the outer periphery, the outer periphery being formed in a tubular shape with an internal space that can be filled with a fluid, and a filling portion with a lid that can be opened and closed to let the fluid in and out. In other words, the object is to provide a training device that can be held and used with adjustable load to train the wrists and forearms, primarily to improve muscle strength related to wrist rotation.

[0025] An embodiment of a circular training device 1 according to the present invention will be described below with reference to the drawings. In this description, identical or symmetrical structures and parts will generally be given the same reference numerals, and only one of the left and right sides will be described, with the other side omitted as appropriate.

[0026] In addition, in this explanation, the side shown in Figure 1(b) is described as the front (front side) of the circular training device 1, the back side is described as the back (rear side), the direction in which the gripping portion 17 extends is described as the horizontal direction, the side above the gripping portion 17 is described as the upper half 3, and the side below the gripping portion 17 is described as the lower half 4.

[0027] Furthermore, the fluid in the present invention is not limited to liquids such as water, but may be any aggregate of material that can fill the internal space 9 of the circular training device 1 with almost no gaps when filled therein without changing the shape of the material itself; for example, powdery or granular materials such as sand, iron sand, and fine synthetic resin materials are also considered fluids.

[0028] As shown in Figures 1(a), (b) and 2(a) and (b), a circular training device 1 according to an embodiment of the present invention comprises a circular outer peripheral portion 2 and a gripping portion 17 with both ends connected between the opposing inner walls of the outer peripheral portion 2. The outer peripheral portion 2 is formed in a tubular shape with an internal space 9 that can be filled with a fluid, and also forms a filling portion 5 with a lid that can be opened and closed to allow fluid to be added and removed.

[0029] Therefore, by opening the filling section 5, filling the internal space 9 of the outer peripheral portion 2 with any amount of fluid, and then closing the filling section 5, the user M can hold the gripping portion 17 with his / her hand h and perform training, as shown in Figure 17.

[0030] Furthermore, by not filling the entire internal space 9 of the outer peripheral portion 2 with fluid but leaving a moderate amount of space, when the circular training device 1 is rotated around the wrist, it becomes possible to feel the movement of the fluid in the internal space 9 due to centrifugal force while also applying a moderate load to the wrist.

[0031] The configuration of each part of the circular training device 1 will be specifically described below in detail with reference to the drawings.

[0032] As shown in Figures 1(a), (b), 2(a), and (b), the circular training device 1 is composed of an outer peripheral portion 2, which is an endless hollow circular tube made of synthetic resin material formed into a circular ring shape, and a solid, round rod-shaped gripping portion 17 made of synthetic resin material with a smaller diameter than the cross-sectional diameter of the outer peripheral portion 2 and both ends connected between the opposing inner walls of the outer peripheral portion 2.

[0033] In addition, a filling section 5 with a lid that can be opened and closed freely to put in and take out fluids is formed at the upper front side of the outer peripheral section 2.In this embodiment, the filling section 5 is formed so that it is sealed by screwing a filling opening 6 that is drilled into the outer peripheral section 2 and has a female thread, and a lid 7 that has a male thread on the outer periphery and a cross-shaped recess at the head into the filling opening 6.

[0034] The outer peripheral portion 2 is not limited to a circular tube configuration and may be a square tube, etc., and the gripping portion 17 may also be hollow. Furthermore, it is not limited to a round rod shape and may have any shape that is easy to grip.

[0035] Furthermore, the shape and structure of the filling section 5 are not limited to those of this embodiment, and any configuration may be used as long as the fluid can be put in and taken out and the fluid does not leak out in a sealed state.

[0036] Furthermore, as shown in Figures 3 to 8, the circular training device 1 according to this embodiment can also form a buffer section 10 in the outer peripheral section 2, which is formed by a passage section 12 that is an opening that reduces the cross-sectional opening of the internal space 9, and allows fluid to move inside via the passage section 12.

[0037] In other words, in the internal space 9 of the circular pipe that connects the outer periphery 2 in a donut shape, a communication section 12 is formed, which is an opening that does not obstruct communication. Figure 3(b) shows a configuration in which buffer sections 10, each having a circular communication section 12 drilled in the center of a circular buffer plate 11, are formed in four places in the internal space 9 as shown in Figure 3(a).

[0038] The buffer section 10 in Figure 4(b) is configured in such a way that a circular buffer plate 11 is drilled to form a columnar left-right separation section 13 that extends in the front-to-back direction of the outer peripheral section 2, i.e., in a direction perpendicular to the axial direction of the gripping section 17, and has communication sections 12 on the left and right sides, and is formed in four places in the internal space 9 as shown in Figure 4(a).

[0039] In addition, the buffer section 10 in Figure 5(b) has a semicircular buffer plate 11 formed on the rear side of the outer peripheral section 2, and the opening on the front side is used as a passage section 12, and is formed in four places in the internal space 9 as shown in Figure 5(a).

[0040] The buffer section 10 in Figure 6(b) has a semicircular buffer plate 11 formed on the outside, dividing the internal space 9 into two concentric circles, and four openings on the inside are formed as communication sections 12 in the internal space 9, as shown in Figure 6(a).

[0041] The buffer section 10 in Figure 7(b) has a semicircular buffer plate 11 formed on the inside, dividing the internal space 9 into two concentric circles, and the outer openings are used as communication sections 12, which are formed in four places in the internal space 9 as shown in Figure 7(a).

[0042] Furthermore, the buffer section 10 in Figure 8(b) has approximately semicircular buffer plates 11 formed on the outside and inside, dividing the internal space 9 into three concentric circles, and the openings in the gaps between these plates serve as communication sections 12, which are formed in four places in the internal space 9 as shown in Figure 8(a).

[0043] As such, the configuration of the buffer section 10 described above shows one embodiment, and the shape and configuration of the buffer section 10 are not limited to this, and various modifications and variations are possible within the scope of the gist of the present invention.

[0044] Furthermore, the number and positions of the buffer sections 10 are not limited to those in this embodiment, and buffer sections 10 of a plurality of shapes may be formed in the internal space 9 in a mixed manner.

[0045] Furthermore, as shown in FIGS. 9(a) and 9(b), the outer peripheral portion 2 of the circular training device 1 according to this embodiment can also form a partition portion 15 that blocks the filled fluid so that it cannot move inside.

[0046] That is, in the internal space 9 of the circular pipe that connects the outer periphery 2 in a donut-like shape, a disk-shaped partition 15 is formed that obstructs and blocks communication. In this embodiment shown in Figure 9, partitions 15 are formed at each location in the internal space 9 of the outer periphery 2 where both ends of the gripping portion 17 are connected.

[0047] In this case, since the upper half 3 and lower half 4 of the outer peripheral portion 2 need to be filled with fluid separately, a filling portion 5 similar to the above-mentioned filling portion 5 is also formed in the lower rear portion of the outer peripheral portion 2.

[0048] In the circular training device 1 configured in this manner, the buffer section 10 described above can also be formed in the internal space 9, as shown in FIGS.

[0049] Furthermore, in the circular training device 1 according to this embodiment, the grip portion 17 may be formed in a cross shape, as shown in FIGS. 16(a) and 16(b).

[0050] The circular training device 1 according to this embodiment is configured as described above.

[0051] In this way, the circular training device 1 consists of a circular outer peripheral portion 2 and a gripping portion 17 with both ends connected between the opposing inner walls of the outer peripheral portion 2. The outer peripheral portion 2 is formed in a tubular shape with an internal space 9 that can be filled with fluid, and is formed with a filling portion 5 with a lid that can be opened and closed freely to let the fluid in and out.As a result, the outer peripheral portion 2 is located around the periphery of the gripping hand h, so centrifugal force can be used efficiently in wrist rotation training, and the load can be easily adjusted by the amount of fluid filled in.It can also be used as a substitute for dumbbells.

[0052] Furthermore, by not filling the entire internal space 9 of the outer peripheral portion 2 with fluid but leaving a moderate amount of space, it is possible to feel the movement of the fluid in the internal space 9 due to centrifugal force when rotating around the wrist, and also to apply a moderate load when inverting.

[0053] Furthermore, the outer peripheral portion 2 forms a passageway 12 consisting of an opening that reduces the cross-sectional opening of the internal space 9, and a buffer portion 10 is formed that allows the fluid to move inside through the passageway 12. As a result, by not filling the entire internal space 9 of the outer peripheral portion 2 with fluid but leaving a moderate amount of space, when the wrist is rotated around the center, the fluid passing through the passageway 12 becomes resistant to the buffer portion 10 depending on the rotation speed and the amount of fluid filled, making it possible to apply a complex load.

[0054] Furthermore, the outer peripheral portion 2 has a partition portion 15 that blocks the filled fluid so that it cannot move inside. This means that the entire internal space 9 of the outer peripheral portion 2 is not filled with fluid, but a moderate amount of space is left, so that when the wrist is rotated, the fluid can move within the internal space 9 using the partition portion 15 as a base point, and furthermore, it is possible to apply new loads by the fluid colliding with the partition portion 15, including during inversion movements.

[0055] Furthermore, the outer peripheral portion 2 has partition sections 15 formed at each point where both ends of the gripping portion 17 are connected, and multiple buffer sections 10 are formed, so that the entire internal space 9 of the outer peripheral portion 2 is not filled with fluid, and a moderate amount of space is left.This allows the fluid to move independently in the upper half 3 and lower half 4 of the outer peripheral portion 2 when rotated around the wrist, making it possible to apply complex loads.

[0056] Furthermore, the buffer section 10 extends in the front-to-back direction of the outer peripheral section 2, i.e., in a direction perpendicular to the axial direction of the grip section 17, and forms a columnar left-right separation section 13 having passage sections 12 on the left and right sides.This means that the entire internal space 9 of the outer peripheral section 2 is not filled with fluid, and a moderate amount of space is left.As a result, when the wrist is rotated, the fluid passing through the passage section 12 can move to either side of the left-to-right separation section 13 depending on the inclination, rotation speed, and amount of fluid filled, making it possible to enjoy training while feeling and adjusting the movement of the fluid.

[0057] Although a preferred embodiment of the circular training device 1 according to this embodiment of the present invention has been described above, the present invention is not limited to a specific embodiment, and various modifications and variations are possible. [Explanation of symbols]

[0058] 1. Circular training device 2 Outer periphery 5 Filling section 9. Interior Space 11 Buffer section 12 Traffic Department 13 Left and right separation section 15 Partition 17. Control Department

Claims

1. The gripping portion has an annular outer circumferential portion and a gripping portion whose both ends are connected between the opposing inner walls of the outer circumferential portion. The circular training device is characterized in that the outer peripheral portion is formed in a tubular shape having an internal space that can be filled with a fluid, and is formed with a filling portion that can be opened and closed to allow the fluid to be put in and taken out.

2. The circular training device of claim 1, characterized in that the outer peripheral portion forms a passageway consisting of an opening that reduces the cross-sectional opening of the internal space, and forms a buffer portion that allows the fluid to move inside through the passageway.

3. 3. The circular training device according to claim 1, wherein the outer peripheral portion is formed with a partition portion that blocks the filled fluid so that the fluid cannot move inside.

4. 4. The circular training device according to claim 3, wherein the outer peripheral portion is formed with the partition portions at locations where both ends of the grip portion are connected, and also with a plurality of the buffer portions.

5. The circular training device according to claim 4, characterized in that the buffer portion forms a columnar left-right separation portion extending in the front-to-rear direction of the outer periphery, i.e., in a direction perpendicular to the axial direction of the grip portion, and having the communication portion on the left and right sides.

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