JP2013031653A - Assist device for use in twisting exercise - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device allowing a user to easily and effectively twist the wrists and elbows without imposing a burden.SOLUTION: An assist device 1 is used for twisting exercise. The assist device 1 includes a straight rod-shaped part 2 nearly as long as the shoulder of a person, and a pair of grip parts 3 and 4 provided on both ends of the rod-shaped part 2. The pair of grip parts 3 and 4 are inclined at substantially 15° to the rod-shaped part 2, and are plane symmetric with respect to the rod-shaped part 2. The total weight of the rod-shaped part 2 and the pair of grip parts 3 and 4, or the total weight of the assist device, 1 is substantially 0.8-1.2 kg.

Description

  The present invention relates to an auxiliary tool used, for example, to widen a range of motion of a joint and improve a torsional force.

  For example, improving the torsional force is an important factor for extending the flight distance in golf. In order to improve the twisting force, it is common practice to swing the golf club. David Redbetter, a prominent golf instructor, points out that it is very effective to place the golf club on the back side, hold it on both sides, and tilt the posture forward. Patent Document 1 discloses a training device for performing such a torsional motion.

JP 2007-75509 A

The present inventor has intensively studied an instrument that performs the torsional motion more effectively. Moreover, even if it is a person unrelated to golf, in order to make the torsional motion as a stretch feel easily, the training apparatus of patent document 1 is too big. Furthermore, in the process of the present inventor's research and development, a new problem that the wrist and the elbow are burdened during the torsional movement has also been found.
Therefore, the subject of this invention is providing the instrument which can perform a twisting exercise | movement easily and effectively, without applying a burden to a wrist or an elbow.

  In order to solve the above-mentioned problems, an auxiliary tool used for torsional movement according to the present invention is a straight bar-shaped part having a length substantially equal to a person's shoulder width, and a pair of gripping parts provided at both ends of the bar-shaped part. Each of the pair of gripping portions is inclined by about 15 ° with respect to the rod-shaped portion, and is a surface object across the rod-shaped portion, and the total weight of the rod-shaped portion and the pair of gripping portions is 0.8. About 1.2 kg.

In the present invention, the rod-shaped portion and the pair of gripping portions are detachable, and there are a plurality of types of the rod-shaped portions having different lengths and weights. The weight may be finely adjusted.
In the present invention, the rod-shaped portion may have an expansion / contraction mechanism, and the length may be finely adjusted by expanding / contracting the rod-shaped portion.
Each of the pair of gripping portions is preferably arc-shaped.

  In the present invention, the rod-shaped part may have a liquid storage part capable of pouring water from the outside and draining the outside, and finely adjust the weight by increasing or decreasing the amount of liquid stored in the liquid storage part. .

  In the present invention, the torsional motion can be performed easily and effectively without placing a burden on the wrist or elbow.

It is a perspective view which shows the structure of the auxiliary tool which concerns on one Embodiment of this invention. It is a top view of the auxiliary tool shown in FIG. It is a top view which shows the state which decomposed | disassembled the auxiliary tool shown in FIG.1 and FIG.2. It is a figure for demonstrating the effect of the auxiliary tool which concerns on this invention. It is a figure for demonstrating the example of the rotational motion with the auxiliary tool of another form.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a configuration of an auxiliary tool according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
As shown in these drawings, the auxiliary tool 1 is composed of a rod-shaped portion 2 and a pair of gripping portions 3 and 4.

  The rod-like portion 2 is straight and has a length substantially equal to the shoulder width of a person. The length substantially equal to the shoulder width of a person is about 40 cm, and the length before and after that is also included. In terms of the effect of the present invention, the length of the rod-like portion 2 includes a range of 30 cm to 50 cm, and more preferably includes a range of 35 cm to 45 cm. The cross-sectional shape of the rod-like portion 2 may be circular, elliptical, or quadrangular.

  Of course, the inside of the rod-like portion 2 may be hollow or not. The rod-like portion 2 may be a metal material such as iron or a hard plastic, for example. In short, it is sufficient if the weight can be secured and the body is rigid, and for example, a multilayer structure of metal and plastic may be used. From the viewpoint of safety, the outer periphery of the rod-like portion 2 may be covered with soft rubber or the like.

  The pair of gripping portions 3 and 4 are detachably attached to both ends of the rod-like portion 2. For example, as shown in FIG. 3, both ends of the rod-shaped portion 2 have a female screw structure 2a, and the ends of the pair of gripping portions 3 and 4 have male screw structures 3a and 4a. The grips 3 and 4 can be detachable. As the detachable structure, this is merely an example, and various modes are conceivable. Of course, the rod-shaped part 2 and the pair of gripping parts 3 and 4 may be integrated.

  The gripping portions 3 and 4 have, for example, an arc shape. As the shape of the arc, the radius of curvature R is preferably about 40 cm to 60 cm, more preferably around 50 cm. Of course, the gripping portions 3 and 4 may be linear, but from the effect of the present invention, the shape of an arc having a radius of curvature of the above value is more preferable. In other words, the circular shape makes it easier to imagine a circular motion, and the torsional motion can be performed more smoothly. The length of the grips 3 and 4 may be about 20 cm to 40 cm, for example. About the material, shape, etc. of the holding parts 3 and 4, it may be the same as the rod-shaped member 2, for example, or may be different.

  The gripping portions 3 and 4 are attached to the rod-shaped portion 2 so as to be inclined about 15 ° with respect to the rod-shaped portion 2. Further, the pair of gripping portions 3 and 4 form a surface object with the rod-shaped portion 2 interposed therebetween. The surface object across the rod-shaped portion 2 means that the pair of gripping portions 3 and 4 are surface objects with respect to a virtual plane 2d perpendicular to the rod-shaped portion 2 at the center of the rod-shaped portion 2.

  Here, about 15 ° means a range of approximately 10 ° to 20 °, but in a more effective sense, it means a range of 13 ° to 17 ° and 14 ° to 16 °. The inclination of 15 ° with respect to the rod-shaped portion 2 means an angle formed by the gripping portions 3 and 4 with respect to the center line 2b of the rod-shaped portion 2, but in the case where the gripping portions 3 and 4 are arcuate, FIG. As shown, it means an angle θ formed by each tangent 3b, 4b of the center 3c, 4c of the position where the human hand is assumed to be gripped by the gripping portions 3, 4 with respect to the rod-shaped portion 2. As described above, the angle θ is set to about 15 ° because the thumb side is farther from the human body than the little finger side when the human grips the gripping part with his / her hand sandwiching the rod-shaped part 2 having a shoulder width. The present inventors have found that the gripping portions 3 and 4 are gripped more naturally. If the thumb side and the little finger side are substantially the same distance from the human body, that is, the angle θ is substantially 0 and the rod-like part 2 and the gripping parts 3 and 4 are positioned on a straight line, the person holding the gripping parts 3 and 4 It was found that stress occurred on the wrists, elbows, and shoulders. In particular, the total weight of the assisting device 1 according to the present invention is about 0.8 to 1.2 kg, and it is rotated while being reversed to the right and left with considerable momentum. If you exercise while stressing your body, you may hurt your wrists, elbows, and shoulders. In contrast, in the present invention, the gripping portions 3 and 4 can be naturally gripped by setting the angle θ to about 15 °, so that the wrist, elbow, shoulder and the like can be exercised without causing stress, and the wrist, elbow , Do not hurt shoulders.

The auxiliary tool 1 has the above shape, and the weight thereof, that is, the total weight of the rod-shaped portion 2 and the pair of gripping portions 3 and 4 is in the range of 0.8 kg to 1.2 kg, and about 1.0 kg is more. This is a preferred value.
The actual golf club has a weight of 0.3 to 0.5 kg and a length of 0.457 to 1.219 m. Accordingly, the centrifugal force is 24.06 N at a rotational speed of 1 rps, 96.25 N at a rotational speed of 2 rps, and 216.56 N at a rotational speed of 3 rps. As can be seen from experience rules or experience, it can be understood that the centrifugal force enough to swing this golf club is safe and does not place much burden on the body. The total weight of the auxiliary tool 1 was made to match the centrifugal force of this golf club. That is, the centrifugal force of the auxiliary tool 1 is as follows when the arm length is 0.6 m.

When the rotational speed is 1 rps Total weight (kg) 0.8 0.9 1.0 1.1 1.2
Centrifugal force (N) 18.95 21.32 23.69 26.06 28.42
When the rotational speed is 2 rps Total weight (kg) 0.8 0.9 1.0 1.1 1.2
Centrifugal force (N) 75.80 85.27 94.75 104.2 113.7
When the rotational speed is 3 rps Total weight (kg) 0.8 0.9 1.0 1.1 1.2
Centrifugal force (N) 170.6 191.9 218.2 234.5 255.8

As can be seen from these values, it can be seen that the centrifugal force changes greatly only by changing the total weight by 0.1 kg. When the centrifugal force is the same as that of the golf club, it is understood that the total weight of the assisting tool 1 is about 1.0 kg. In consideration of safety, about 1.2 kg was considered as the limit value of the total weight of the auxiliary tool 1. In particular, since safety of this type of device is extremely important, this limit value has a very important meaning in the auxiliary device 1. On the other hand, when the total weight of the assisting tool 1 is 0.8 kg or less, it is considered that the centrifugal force felt by the user is excessively decreased, and the effect of the torsional motion is significantly decreased.
The torsional motion using the auxiliary tool 1 configured in this way will be described.

  As shown in FIG. 1, the user holds the auxiliary tool 1 by holding the holding parts 3, 4 with the left and right hands. At that time, the gripping portions 3 and 4 are gripped so that the back of the hand faces upward. Then, the assisting tool 1 is turned to the left and right as shown in FIG. The rotation speed of the auxiliary portion 1 is preferably slower than when the golf club is swung, but not so slow. Here, since the weight of the auxiliary tool 1 is about 1.0 kg, when rotating the auxiliary tool 1 to the left and right, the user feels the weight of the auxiliary tool 1 to some extent and feels the centrifugal force in the rotation direction. Thereby, torsional motion can be effectively performed while applying a load to the user's body to some extent.

Here, if this type of assisting device has, for example, a straight shape, when the heavy assisting device is rotated to the left, as described above, stress is applied to the wrist, elbow, shoulder, etc. , May hurt shoulders.
As shown in FIG. 5, when the auxiliary tool 6 has an arc shape, the following problems occur when the user rotates the auxiliary tool 6 left and right.

  For example, when the auxiliary tool 6 is rotated in the left direction, the user grasps the left foot shaft 7L as the rotation axis (rotation center) and tries to rotate the auxiliary tool 6 in the left direction around this. This is because the entire assisting tool 6 has a circular arc shape, so the user can imagine a circular motion, but generally the position at the center of the arc shape cannot be imaged. There is a high tendency to use the shaft 7L as a rotation shaft. Conversely, when the auxiliary tool 6 is rotated in the right direction, the user views the right foot shaft 7R as a rotation axis (rotation center) and tries to rotate the auxiliary tool 6 in the right direction around this axis. That is, the auxiliary tool 6 having a circular arc shape has a biaxial rotational motion (reference numerals 11L and 11R) when rotated to the left and right. If it does so, it will become a linear motion (code | symbol 12) when the auxiliary tool 6 passes the front of a body, and when it gets on each axis | shaft 7L and 7R, and when it remove | deviates from each axis | shaft 7L and 7R, it will not become a smooth motion. It may cause stress on wrists, elbows, shoulders, etc. and may hurt wrists, elbows, shoulders, etc.

  On the other hand, as shown in FIG. 4, the auxiliary tool 1 according to the present invention has a straight bar-shaped portion 2 that faces the human front surface 8, so that the user can use the human front surface 8 and the rod-shaped portion 2. Since the surface 9 formed by and is regarded as a virtual rotating arm and this rotating arm is to be rotated, when the auxiliary tool 1 is rotated in the left-right direction, the human center (near the navel) is eventually obtained. This is a uniaxial rotational motion (reference numeral 10) with the rotation axis as the rotational axis. Therefore, compared to the biaxial rotational movement, the wrist, elbow, shoulder and the like can be moved without causing stress, and the wrist, elbow, shoulder and the like are not damaged.

As described above, in the auxiliary tool 1 according to the present invention, the rod-shaped portion 2 is linear, and the angle θ formed by the rod-shaped portion 2 and the gripping portions 3 and 4 is about 15 °. You can exercise without causing stress on your wrist, elbow, shoulder, etc. In addition, since the gripping portions 3 and 4 have an arc shape, it is easy to imagine a circular motion, and the left and right rotational motion can be smoothly performed. Therefore, in the auxiliary tool 1 according to the present invention, it is possible to perform the torsional movement easily and effectively without placing a burden on the wrist or elbow. Further, in the assisting device 1 according to the present invention, since a certain amount of centrifugal force is applied to the whole body of the user, a certain amount of burden is given not only to the upper body but also to the lower limbs, thereby effectively realizing the whole body exercise including the lower limbs. can do.
The present invention is not limited to such an embodiment, and can be implemented with various modifications. The scope of the implementation also belongs to the technical scope of the present invention.

  For example, a plurality of types of rod-shaped portions having different lengths and weights may be prepared, and the length and weight may be finely adjusted by appropriately replacing the rod-shaped portions according to the user's physique, age, sex, etc. .

In addition, the length may be finely adjusted by providing an expansion / contraction mechanism that allows the rod-shaped portion to expand and contract in the rod-shaped portion, and expanding and contracting the rod-shaped portion. Various examples of the expansion / contraction mechanism can be considered. For example, the rod-shaped part is divided into two parts so that they can be connected to each other by a screw mechanism, and the length is finely adjusted according to the depth of insertion into the screw part. May be.
Further, the liquid may be finely adjusted by providing the rod-shaped portion with a liquid reservoir capable of water injection from the outside and draining to the outside, and increasing or decreasing the amount of liquid stored in the liquid reservoir.

  In this specification, in order to make the explanation easy to understand, golf has been described as an example. However, it is not necessarily an assisting device for that purpose, and can naturally be used as a general assisting device for health promotion or the like.

1 Auxiliary tool 2 Bar-shaped part 3, 4 Gripping part

Claims (5)

It is composed of a rod-shaped portion that is straight and has a length substantially equal to the shoulder width of a person, and a pair of grip portions provided at both ends of the rod-shaped portion,
Each of the pair of gripping portions is inclined by about 15 ° with respect to the rod-shaped portion, and makes a surface object across the rod-shaped portion,
A total weight of the rod-shaped part and the pair of gripping parts is about 0.8 to 1.2 kg. The assisting device according to claim 1,
The rod-shaped part and the pair of gripping parts are removable,
There are a plurality of types of rod-shaped portions having different lengths and weights, and the length and weight are finely adjusted by exchanging the rod-shaped portions. The assisting device according to claim 1,
The rod-shaped portion has an expansion / contraction mechanism, and finely adjusts the length by expanding / contracting the rod-shaped portion. The assisting device according to any one of claims 1 to 3,
Each of the pair of gripping portions has an arc shape. The assisting device according to any one of claims 1 to 4,
The rod-shaped part has a liquid storage part capable of pouring water from the outside and draining to the outside, and finely adjusts the weight by increasing or decreasing the amount of liquid stored in the liquid storage part. .

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