Exercising aid

Abstract

To provide an exercising aid that can expand and contract and that can maintain left and right balance.SOLUTION: The present invention is a rod-like exercising aid that can longitudinally expand and contract. The exercising aid includes: a proximal part that is situated in the center in the longitudinal direction of the exercising aid; a first length adjustment part that can be moved for the proximal part by sliding from one end of the proximal part in the longitudinal direction; and a second length adjustment part that can be moved for the proximal part by sliding from the other end different from the one end of the proximal part in the longitudinal direction. The proximal part and the first length adjustment part can be fixed at an arbitrary position, as can be the proximal part and the second length adjustment part. The first length adjustment part and the second length adjustment part are symmetrically shaped relative to the center line in the longitudinal direction of the proximal part. With the purpose of making the exercising aid symmetrical relative to the center line, the position of the first length adjustment part and of the second length adjustment part can be fixed, in the exercising aid.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an extensible exercise aid. [Background technology]

[0002] With the rise in health awareness, various training methods and exercise aids for training have been proposed. For example, an exercise aid that can be held in both hands to enhance the effectiveness of light exercise such as stretching, bending the body back and forth, and twisting the body has been disclosed (see Patent Document 1). More specifically, Patent Document 1 discloses an exercise aid in which an axial rod is passed through two cylindrical grips with finger hooks on both ends, and stoppers are attached to both ends of the axial rod, making it possible to slide the grips.

[0003] However, in Patent Document 1, although the grip portion can be slid, the length of the exercise aid cannot be changed. Therefore, the exercises for which this exercise aid can be used are limited, and in order to use the rod-shaped exercise aid for more exercises, it was necessary to prepare multiple exercise aids of different lengths.

[0004] Furthermore, even if the exercise aid is rod-shaped and stretchable, if the balance between the left and right sides is different when exercising while holding both ends of the rod-shaped exercise aid in each hand, the load on both hands, arms, shoulders, etc. will be different, and the exercise will not be appropriate. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-195904 Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention has been made to solve the above problems. That is, an object of the present invention is to provide an exercise aid that is stretchable and capable of maintaining left-right balance. [Means for solving the problem]

[0007] The present invention solves the above problems as follows. [1] A rod-shaped exercise aid that is extendable in the longitudinal direction, comprising: a base located in the longitudinal center of the exercise aid; a first length adjustment part that can be slid and moved in the longitudinal direction from one end side of the base relative to the base; and a second length adjustment part that can be slid and moved in the longitudinal direction from the other end side of the base different from the one end side of the base relative to the base; the base and the first length adjustment part can be fixed in any position; the base and the second length adjustment part can be fixed in any position; the first length adjustment part and the second length adjustment part have shapes symmetrical with respect to the longitudinal center line of the base; and the positions of the first length adjustment part and the second length adjustment part can be fixed so that the exercise aid is symmetrical with respect to the center line; [2] The exercise aid according to [1], which includes a third length adjustment part that can be slid and moved in the longitudinal direction relative to the first length adjustment part from a side different from the side where the first length adjustment part is connected to the base, and a fourth length adjustment part that can be slid and moved in the longitudinal direction relative to the second length adjustment part from a side different from the side where the second length adjustment part is connected to the base, and the first length adjustment part and the third length adjustment part can be fixed at any position, the second length adjustment part and the fourth length adjustment part can be fixed at any position, the third length adjustment part and the fourth length adjustment part have shapes symmetrical with respect to a center line in the longitudinal direction of the base, and the positions of the third length adjustment part and the fourth length adjustment part can be fixed so that the exercise aid is symmetrical with respect to the center line; [3] The exercise aid according to [1] or [2], wherein the base is columnar or cylindrical, the first length adjustment part is cylindrical and can be rotated relative to the base around an axis in the longitudinal direction, and the base can be inserted from the one end side of the base, and the second length adjustment part is cylindrical and can be rotated relative to the base around an axis in the longitudinal direction, and the base can be inserted from the other end side of the base; [4] An exercise aid according to any one of [1] to [3], in which the base and the first length adjustment part can be fixed at any position by rotating the base or the first length adjustment part about an axis in the longitudinal direction, and the base and the second length adjustment part can be fixed at any position by rotating the base or the second length adjustment part about an axis in the longitudinal direction; [5] The exercise aid according to [3] or [4], wherein the third length adjustment part is cylindrical and can be rotated relative to the first length adjustment part around an axis in the longitudinal direction, and the first length adjustment part can be inserted from the different side of the first length adjustment part; and the fourth length adjustment part is cylindrical and can be rotated relative to the second length adjustment part around an axis in the longitudinal direction, and the second length adjustment part can be inserted from the different side of the second length adjustment part; [6] The exercise aid according to any one of [3] to [5], wherein the first length adjustment unit or the third length adjustment unit can be fixed at any position by rotating the first length adjustment unit or the third length adjustment unit around an axis in the longitudinal direction, and the second length adjustment unit or the fourth length adjustment unit can be fixed at any position by rotating the second length adjustment unit or the fourth length adjustment unit around an axis in the longitudinal direction; [7] The exercise aid according to any one of [1] to [6], wherein one or both ends are detachable with different types of attachment parts; [8] An exercise aid according to any one of [1] to [7], wherein, when the direction toward the center of the longitudinal direction of the base is defined as the front, the first length adjustment unit has a first gripping portion at the front end of the first length adjustment unit, and the second length adjustment unit has a second gripping portion at the front end of the second length adjustment unit, and when the first length adjustment unit and / or the second length adjustment unit are slid and moved so that the first gripping portion and the second gripping portion are closest to each other, the first gripping portion and the second gripping portion do not come into contact with each other; [9] An exercise aid according to any one of [2] to [8], wherein, when the direction toward the center of the longitudinal direction of the base is defined as the front, the third length adjustment section has a third grip section at its front end, and the fourth length adjustment section has a fourth grip section at its front end, and when the first length adjustment section and / or the third length adjustment section are slid and moved so that the first grip section and the third grip section are closest to each other, the first grip section and the third grip section do not come into contact with each other, and when the second length adjustment section and / or the fourth length adjustment section are slid and moved so that the second grip section and the fourth grip section are closest to each other, the second grip section and the fourth grip section do not come into contact with each other;

[10] An exercise aid according to any one of [1] to [9], wherein the surfaces of the base, the first length adjustment part, the second length adjustment part, the third length adjustment part, and / or the fourth length adjustment part are colored in two or more different colors and / or patterned in two or more different patterns, so as to be symmetrical about the longitudinal center line of the base;

[11] The exercise aid according to

[10] , wherein the surfaces of the base, the first length adjustment part, the second length adjustment part, the third length adjustment part, and / or the fourth length adjustment part are provided with gradations of two or more different colors and / or two or more different patterns, so as to be symmetrical about the center line of the longitudinal direction of the base;

[12] An exercise aid described in any one of [1] to

[11] , in which a pattern and / or color scheme that functions as a scale is applied to the surface of the base, the first length adjustment portion, the second length adjustment portion, the third length adjustment portion and / or the fourth length adjustment portion. [Effects of the Invention]

[0008] According to the present invention, an exercise aid can be obtained that is stretchable and capable of maintaining left and right balance. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating an example of an exercise aid according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating an example of an exercise aid according to an embodiment of the present invention. [Figure 3] 1A and 1B are diagrams illustrating an example of an attachment unit according to an embodiment of the present invention. [Figure 4] 1A and 1B are diagrams illustrating an example of an attachment unit according to an embodiment of the present invention. [Figure 5] 1A and 1B are diagrams illustrating an example of use of an exercise aid according to an embodiment of the present invention. [Figure 6] 1A and 1B are diagrams illustrating an example of use of an exercise aid according to an embodiment of the present invention. [Figure 7] 1A and 1B are diagrams illustrating an example of use of an exercise aid according to an embodiment of the present invention. [Figure 8] 1 is a diagram showing an example of a pattern of an exercise aid according to an embodiment of the present invention. [Figure 9] 1 is a diagram showing an example of a color scheme of an exercise aid according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings, etc. However, the present invention is not limited to the following embodiments as long as they do not contradict the spirit of the present invention.

[0011] 1 is a diagram showing an example of an exercise aid according to an embodiment of the present invention. Exercise aid 1 includes a base 10, a first length adjustment section 11, a second length adjustment section 12, a third length adjustment section 13, and a fourth length adjustment section 14. The materials for base 10, first length adjustment section 11, second length adjustment section 12, third length adjustment section 13, and fourth length adjustment section 14 are not particularly limited as long as they do not contradict the spirit of the present invention, but it is preferable to use a lightweight, high-strength material such as a metal such as aluminum or titanium, or a resin such as polyvinyl chloride resin or acrylic resin.

[0012] The base 10 has a columnar or cylindrical shape and is located at the longitudinal center of the exercise aid 1. The outer diameter of the base 10 is preferably 12 mm or more, and more preferably 14 mm or more. The outer diameter of the base 10 is preferably 18 mm or less, and more preferably 20 mm or less.

[0013] The first length adjustment portion 11 is cylindrical. The outer diameter of the first length adjustment portion 11 is preferably 15 mm or more, and more preferably 17 mm or more. The outer diameter of the first length adjustment portion 11 is preferably 23 mm or less, and more preferably 21 mm or less. The first length adjustment portion 11 can be slid and moved relative to the base portion 10 in the longitudinal direction from one end side of the base portion 10. The inner diameter of the cylinder of the first length adjustment portion 11 is larger than the outer diameter of the base portion 10, and the base portion 10 can be inserted into the first length adjustment portion 11 by sliding it from one end side of the base portion 10.

[0014] The first length adjustment unit 11 can be rotated relative to the base 10 around an axis in the longitudinal direction. Not only can the base 10 be held and fixed in the hand and then rotated, but the first length adjustment unit 11 can also be held and fixed in the hand and then rotated. By rotating the base 10 or the first length adjustment unit 11 in one direction, the base 10 and the first length adjustment unit 11 can be fixed at any position. Furthermore, by rotating in the opposite direction, the fixed state of the base 10 and the first length adjustment unit 11 can be released, and the base 10 and the first length adjustment unit 11 can be slid again.

[0015] A known mechanism can be used as the mechanism for fixing the base 10 and the first length adjustment unit 11. The fixing mechanisms are provided on both ends of the base 10, and by rotating the first length adjustment unit 11 relative to the base 10, the fixing mechanism, which is in contact with the inner surface of the cylinder of the first length adjustment unit 11, rotates about an axis in the longitudinal direction, and as this rotation occurs, pieces provided in the fixing mechanism are pushed outward toward the outer periphery, thereby fixing the base 10 and the first length adjustment unit 11. As a method for pushing out the pieces, a method using a screw or a method using an eccentric shaft can be used (for example, the mechanism disclosed in JP 2001-112561 A can be used).

[0016] In first length adjustment unit 11, if the direction toward the longitudinal centerline of base 10 is defined as the front and the direction away from the longitudinal centerline is defined as the rear, grip portion 11a is provided at the front end of first length adjustment unit 11. An exerciser can fix and release base 10 and first length adjustment unit 11 together by holding base 10 in one hand and grasping and rotating grip portion 11a with the other hand. Grip portion 11a is preferably made of a non-slip rubber material such as acrylic rubber. The same applies to the other grip portions 12a, 13a, and 14a below.

[0017] Furthermore, when the base 10 and the first length adjustment unit 11 are fixed to each other, the exercise aid 1 preferably produces a sound or the like that allows the exerciser to recognize that the base 10 and the first length adjustment unit 11 have been fixed. To produce a sound when the base 10 and the first length adjustment unit 11 are fixed to each other, it is possible to roughen the inner surface of the first length adjustment unit 11 by applying a predetermined chemical (using a chemical appropriate to the material of the first length adjustment unit 11) to the inside of the cylinder of the first length adjustment unit 11 or by performing a surface treatment such as rubbing. By performing such treatment, it is possible to generate a sound by friction when the surface of the base and the inner surface of the first length adjustment unit 11 come into contact. It is also possible to perform a similar surface treatment on the side surface of the base to generate a sound when the base 10 and the first length adjustment unit 11 are fixed to each other. However, in this case, the surface treatment is preferably performed on the inner surface of the first length adjustment unit 11 because the part that the exerciser touches will be rough. By generating a sound when the base 10 and the first length adjustment part 11 are fixed, it is possible to prevent the exerciser from rotating the grip part 11a excessively and damaging the fixing mechanism. In the following, when other grip parts are rotated to fix the base and the length adjustment part, or the length adjustment parts to each other, it is possible to generate a sound using the same method as above.

[0018] Like the first length adjustment part 11, the second length adjustment part 12 is cylindrical. The outer diameter of the second length adjustment part 12 is the same as the outer diameter of the first length adjustment part 11. The second length adjustment part 12 can be slid and moved in the longitudinal direction relative to the base part 10 from the other end side of the base part 10 that is different from the one end side. The inner diameter of the cylinder of the second length adjustment part 12 is larger than the outer diameter of the base part 10, and the base part 10 can be inserted into the second length adjustment part 12 by sliding it from the other end side of the base part 10.

[0019] The second length adjustment unit 12 can be rotated around an axis in the longitudinal direction relative to the base unit 10. By rotating the base unit 10 or the second length adjustment unit 12 in one direction, the base unit 10 and the second length adjustment unit 12 can be fixed at any position. The above-mentioned known mechanism can be used as the mechanism for fixing the base unit 10 and the second length adjustment unit 12.

[0020] In second length adjustment unit 12, if the direction toward the longitudinal centerline of base 10 is defined as the front and the direction away from the longitudinal centerline is defined as the rear, grip portion 12a is provided at the front end of second length adjustment unit 12. An exerciser can fix and release base 10 and second length adjustment unit 12 together by holding base 10 in one hand and grabbing and rotating grip portion 12a with the other hand.

[0021] The first length adjustment unit 11 and the second length adjustment unit 12 are symmetrical with respect to the center line in the longitudinal direction of the base 10. The positions of the first length adjustment unit 11 and the second length adjustment unit 12 can be fixed so that the exercise aid 1 is symmetrical with respect to the center line. For example, when the distance between the front end of the first length adjustment unit 11 and the center line and the distance between the front end of the second length adjustment unit 12 and the center line are the same, the exercise aid 1 is bilaterally symmetrical. The exerciser can control the positions of the first length adjustment unit 11 and the second length adjustment unit 12 so that the exercise aid 1 has the desired length and is balanced between the left and right sides.

[0022] The third length adjustment portion 13 is cylindrical. The outer diameter of the third length adjustment portion 13 is preferably 18 mm or more, and more preferably 20 mm or more. The outer diameter of the third length adjustment portion 13 is preferably 26 mm or less, and more preferably 24 mm or less. The third length adjustment portion 13 can be slid and moved relative to the first length adjustment portion 11 in the longitudinal direction from the rear end side of the first length adjustment portion 11. The inner diameter of the cylinder of the third length adjustment portion 13 is larger than the outer diameter of the first length adjustment portion 11, and the first length adjustment portion 11 can be inserted into the third length adjustment portion 13 by sliding it from the rear end side of the first length adjustment portion 11.

[0023] The third length adjustment unit 13 can be rotated relative to the first length adjustment unit 11 around an axis in the longitudinal direction. By rotating the first length adjustment unit 11 or the third length adjustment unit 13 in one direction, the first length adjustment unit 11 and the third length adjustment unit 13 can be fixed at any position. Furthermore, by rotating them in the opposite direction, the fixed state of the first length adjustment unit 11 and the third length adjustment unit 13 is released, and the first length adjustment unit 11 and the third length adjustment unit 13 can be slid again. A known mechanism can be used as the mechanism for fixing the first length adjustment unit 11 and the third length adjustment unit 13.

[0024] In third length adjustment unit 11, if the direction toward the longitudinal centerline of base 10 is defined as the front and the direction away from the longitudinal centerline is defined as the rear, grip portion 13a is provided at the front end of third length adjustment unit 13. An exerciser can fix and release first length adjustment unit 11 and third length adjustment unit 13 together by holding first length adjustment unit 11 in one hand and grabbing and rotating grip portion 13a with the other hand.

[0025] The fourth length adjustment part 14 is cylindrical. The outer diameter of the fourth length adjustment part 14 is the same as the outer diameter of the third length adjustment part 13. The fourth length adjustment part 14 can be moved relative to the second length adjustment part 12 by sliding it in the longitudinal direction from the rear end side of the second length adjustment part 12. The inner diameter of the cylinder of the fourth length adjustment part 14 is larger than the outer diameter of the second length adjustment part 12, and the second length adjustment part 12 can be inserted into the fourth length adjustment part 14 by sliding it from the rear end side of the second length adjustment part 12.

[0026] The fourth length adjustment unit 14 can be rotated relative to the second length adjustment unit 12 around an axis in the longitudinal direction. By rotating the second length adjustment unit 12 or the fourth length adjustment unit 14 in one direction, the second length adjustment unit 12 and the fourth length adjustment unit 14 can be fixed at any position. By rotating them in the opposite direction, the fixed state of the second length adjustment unit 12 and the fourth length adjustment unit 14 is released, and the second length adjustment unit 12 and the fourth length adjustment unit 14 can be slid again. A known mechanism can be used as the mechanism for fixing the second length adjustment unit 12 and the fourth length adjustment unit 14.

[0027] In fourth length adjustment unit 14, if the direction toward the longitudinal centerline of base 10 is defined as the front and the direction away from the longitudinal centerline is defined as the rear, grip portion 14a is provided at the front end of fourth length adjustment unit 14. The exerciser can fix and release second length adjustment unit 12 and fourth length adjustment unit 14 together by holding second length adjustment unit 12 in one hand and grabbing and rotating grip portion 14a with the other hand.

[0028] The third length adjustment unit 13 and the fourth length adjustment unit 14 are symmetrical with respect to the center line in the longitudinal direction of the base 10. The positions of the third length adjustment unit 13 and the fourth length adjustment unit 14 can be fixed so that the exercise aid 1 is symmetrical with respect to the center line. For example, the exercise aid 1 will be bilaterally symmetrical if the distance between the front end of the first length adjustment unit 11 and the center line is the same as the distance between the front end of the second length adjustment unit 12 and the center line, and the distance between the front end of the third length adjustment unit 13 and the front end of the first length adjustment unit 11 is the same as the distance between the front end of the fourth length adjustment unit 14 and the front end of the second length adjustment unit 12.

[0029] Therefore, the exerciser can control the positions of the first length adjustment unit 11, the second length adjustment unit 12, the third length adjustment unit 13 and the fourth length adjustment unit 14 so that the exercise aid 1 is of the desired length and so that the left and right sides of the exercise aid 1 are balanced, allowing the exerciser to perform exercises that focus on the symmetry of the body.

[0030] The exercise aid 1 of the present invention can be quickly adjusted in length, for example, by using it at a long length and then immediately shortening it, so that one can move from one exercise to the next without a gap.

[0031] Furthermore, the exercise aid 1 of the present invention can be adjusted to an appropriate length according to the height and build of the exerciser, allowing the exerciser to exercise without having to perform compensatory movements.

[0032] Scales may be provided at equal intervals on the surfaces of the base 10, the first length adjustment section 11, the second length adjustment section 12, the third length adjustment section 13, and the fourth length adjustment section 14. Alternatively, the scales may be provided on the surfaces of one or more of the base 10, the first length adjustment section 11, the second length adjustment section 12, the third length adjustment section 13, and the fourth length adjustment section 14. The scales may be provided on the entire surface or on a portion of the surface. By providing scales in this manner, the user can use them as a guide when adjusting the length of the exercise aid 1. If the user always exercises with the same length of the exercise aid 1, for example, if they are unable to exercise properly even though they usually do so without difficulty, this can indicate that their physical condition is not as good as usual that day, making it possible to understand the quality of their physical condition on that day. Furthermore, more flexible individuals can shorten or lengthen the exercise aid 1 even when performing the same exercise, making it easier to quantify their physical flexibility.

[0033] The scales on the surface of the exercise aid 1 may be applied as a pattern and / or color scheme that functions as a scale to the surface of the base 10, the first length adjustment portion 11, the second length adjustment portion 12, the third length adjustment portion 13, and / or the fourth length adjustment portion 14. The pattern and / or color scheme that functions as a scale may also be two or more different patterns and / or color schemes with two or more different intervals. These patterns are preferably symmetrical with respect to the center line in the longitudinal direction of the base 10. By applying such patterns and / or color schemes, it becomes possible to adjust the length without compromising the aesthetic appearance of the exercise aid 1.

[0034] FIG. 8 is a diagram showing an example of a pattern of an exercise aid according to an embodiment of the present invention. In FIG. 8, the exercise aid 1 is provided with two types of patterns: a geometric pattern 21 and zigzag lines 22. The geometric pattern 21 is a pattern of overlapping regular hexagons, and multiple lines parallel to the longitudinal center line of the base 10 in the geometric pattern 21 are drawn at 1 cm intervals. The zigzag lines 22 are drawn at 5 cm intervals between each other. An exerciser can refer to the zigzag lines 22 spaced 5 cm apart when making large changes to the length of the exercise aid 1, and can refer to the geometric pattern 21 spaced 1 cm apart when making small changes to the length of the exercise aid 1.

[0035] Furthermore, the surfaces of base 10, first length adjustment portion 11, second length adjustment portion 12, third length adjustment portion 13, and / or fourth length adjustment portion 14 may be colored in two or more different colors and / or patterned symmetrically about the longitudinal center line of base 10. The colored in two or more different colors and / or patterned in two or more different colors may be a gradation of two or more different colors and / or two or more different patterns. By using such colored inversions and / or patterns, the exerciser can visually determine whether the exercise aid 1 is balanced left and right without having to count the scales accurately.

[0036] Fig. 9 is a diagram showing an example of the color scheme of an exercise aid according to an embodiment of the present invention. As shown in Fig. 9, the exercise aid 1 has a gradation of different colors that is symmetrical about the center line in the longitudinal direction of the base 10. This color scheme makes it easier to visually grasp the distance from the center line in the longitudinal direction of the base 10, and makes it easier for the exerciser to balance the exercise aid 1 on the left and right.

[0037] Grip portions 15a and 15b are provided at the rear ends of the third length adjustment portion 13 and the fourth length adjustment portion 14, respectively. When the length of the exercise aid 1 is adjusted to be relatively short, the exerciser can, for example, grasp grip portion 15a with the right hand and grip portion 15b with the left hand. Grip portions 15a and 15b have gentle depressions 16a and 16b from the center to the front of the longitudinal direction of grip portion 15. Grip portions 15a and 15b can be made to fit the hand by forming a loop with the index finger and thumb to grasp depressions 16a and 16b, and then grasping the areas of grip portions 15a and 15b other than depressions 16a and 16b with the palm and other fingers. Having such easy-to-grip grip portions 15a and 15b allows exercise to be performed without straining, making it easier to perform exercises that improve mobility.

[0038] As shown in Fig. 1, grip portions 15a, 15b have protuberances 20a, 20b provided forward of depressions 16a, 16b. Providing protuberances 20a, 20b on grip portions 15a, 15b allows an exerciser to easily grasp the rear ends of third length adjustment portion 13 and fourth length adjustment portion 14 by, for example, forming a loop with their index finger and thumb and hooking it onto protuberances 20a, 20b. Having such easy-to-grip grip portions 15a, 15b allows exercise to be performed without straining, making it easier to perform exercises that improve mobility.

[0039] Furthermore, it is preferable that grip portions 15a, 15b are attached to third length adjustment portion 13 and fourth length adjustment portion 14 with screws. Attaching grip portions 15a, 15b with screws allows grip portion 15 to remain detached and be used safely even when the exerciser performs an exercise that applies force to the rear of grip portion 15. When grip portion 15 is attached with screws, a structure in which threaded portions are provided in grip portions 15a, 15b and threaded holes are provided in third length adjustment portion 13 and fourth length adjustment portion 14 may be used, or a structure in which threaded portions are provided in third length adjustment portion 13 and fourth length adjustment portion 14 and threaded holes are provided in grip portions 15a, 15b may be used. Because grip portions 15a, 15b are not glued to third length adjustment portion 13 and fourth length adjustment portion 14 but are attached with screws, grip portions 15a, 15b can be replaced when worn.

[0040] Attachment portions 17a and 17b are provided at the rear ends of grip portions 15a and 15b. Attachment portions 17a and 17b are located at both ends of exercise aid 1. Attachment portions 17a and 17b can be shaped to form a gently curved surface with grip portions 15a and 15b (excluding the groove between the attachment portion and the grip portion). In this way, attachment portions 17a and 17b form a gently curved surface that is not discontinuous except for the groove, so that even people with large hands can firmly grip exercise aid 1 by using not only grip portions 15a and 15b but also the sides of attachment portions 17a and 17b.

[0041] The attachment portions 17a and 17b are detachable. The shapes of the attachment portions 17a and 17b can be modified as needed depending on the application. The attachment portions 17a and 17b have cylindrical fitting holes with an inner diameter equal to the outer diameter of the cylinders of the third length adjustment portion 13 and the fourth length adjustment portion 14. The exerciser can secure the attachment portions 17a and 17b to the exercise aid 1 by fitting the cylinders of the third length adjustment portion 13 and the fourth length adjustment portion 14 into the fitting holes of the attachment portions 17a and 17b. Furthermore, the attachment portions 17a and 17b can be removed and replaced with attachment portions of a different shape as needed. Alternatively, the attachment portions 17a and 17b may be configured to directly fit and securely fit onto the grip portions 15a and 15b. This configuration is particularly preferable when the grip portions 15a and 15b are attached to the third length adjustment portion 13 and the fourth length adjustment portion 14 by screws.

[0042] FIG. 3 is a diagram showing an example of an attachment unit according to an embodiment of the present invention. Attachment unit 17c has the same shape as attachment units 17a and 17b and is detached from exercise aid 1. Attachment unit 17c has a cylindrical fitting hole 18, into which the cylinders of third length adjustment unit 13 and fourth length adjustment unit 14 fit, thereby allowing attachment unit 17c to be fixed to exercise aid 1. Alternatively, attachment unit 17c may be structured so that it can be directly fitted to and fixed to grip units 15a and 15b. This structure is particularly preferable when grip units 15a and 15b are attached to third length adjustment unit 13 and fourth length adjustment unit 14 by screws. The bottom surface of attachment unit 17c is curved, allowing exercise aid 1 to be held comfortably even when the bottom surface of attachment unit 17c is in contact with the center of the palm.

[0043] FIG. 4 illustrates an example of an attachment unit according to an embodiment of the present invention. Attachment unit 17d has a cylindrical fitting hole 18, into which the cylinders of third length adjustment unit 13 and fourth length adjustment unit 14 fit, thereby enabling attachment to exercise aid 1. Alternatively, attachment unit 17d may be configured to directly fit and be fixed to grip units 15a and 15b. This configuration is particularly preferable when grip units 15a and 15b are attached to third length adjustment unit 13 and fourth length adjustment unit 14 with screws. The bottom surface of attachment unit 17d is not smoothly curved, but has multiple steps, which prevents slipping even when exercise aid 1 is used standing on the floor or against a wall. Furthermore, attachment unit 17d has a constriction 19, which allows attachment unit 17d to tilt in accordance with exercise aid 1, thereby preventing slipping from the ground, even when exercise aid 1 is used in a position where attachment unit 17d is at an angle to the ground surface.

[0044] Alternatively, attachment portions 17a and 17b may be made of, for example, rubber ropes or those having holes for passing through assistive devices such as ropes. One end of the rubber rope can be fixed to an attachment at one end of exercise aid 1, and the other end of the rubber rope can be fixed to the attachment at the other end of exercise aid 1. In this way, for example, an exerciser can lie on their back on the floor, with the rubber running left and right between their back and the floor, and then grasp both ends of exercise aid 1 with each hand and move exercise aid 1 up and down, thereby performing an exercise similar to bench press. By using such attachment portions, the exerciser can perform exercises with a load without using a heavy object such as a bench press.

[0045] Alternatively, attachment portions 17a and 17b may have depressions such as depressions 16a and 16b. By having depressions on both grip portion 15 and attachment portion 17, it becomes possible to grip the depression on grip portion 15 with the thumb and index finger, and the depression on attachment portion 17 with the little finger. By gripping grip portion 15 and attachment portion 17 in this way, the fingers can be caught in the depressions when moving exercise assist device 1, making it possible to stably grip grip portion 15 and attachment portion 17.

[0046] 2 is a diagram illustrating an example of an exercise aid 1 according to an embodiment of the present invention. As shown in FIG. 2, the exercise aid 1 of the present invention is in its shortest state when the length is adjusted so that the front end of the first length adjustment unit 11 (the front end of the grip portion 11a) and the front end of the second length adjustment unit 12 (the front end of the grip portion 12a) are positioned on the longitudinal center line of the base 10, and further, the front end of the third length adjustment unit 13 (the front end of the grip portion 13a) is positioned on the rear end of the grip portion 11a of the first length adjustment unit 11, and the front end of the fourth length adjustment unit 14 (the front end of the grip portion 14a) is positioned on the rear end of the grip portion 12a of the second length adjustment unit 12. In this case, the first length adjustment unit 11 is contained within the third length adjustment unit 13, the second length adjustment unit 12 is contained within the fourth length adjustment unit 14, and further, the base 10 is contained within the first length adjustment unit 11 and the second length adjustment unit 12. Therefore, the base portion 10, the first length adjustment portion 11, and the second length adjustment portion 12 cannot be seen from the outside.

[0047] Alternatively, although not shown, the exercise aid 1 may be configured such that when the first length adjustment unit 11 and / or the second length adjustment unit 12 are slid and moved so that the front end of the grip unit 11a and the front end of the grip unit 12a are closest to each other, the front end of the grip unit 11a and the front end of the grip unit 12a do not come into contact with each other. The exercise aid 1 may also be configured such that when the first length adjustment unit 11 and / or the third length adjustment unit 13 are slid and moved so that the rear end of the grip unit 11a and the front end of the grip unit 13a are closest to each other, the rear end of the grip unit 11a and the front end of the grip unit 13a do not come into contact with each other, and when the second length adjustment unit 12 and / or the fourth length adjustment unit 14 are slid and moved so that the rear end of the grip unit 12a and the front end of the grip unit 14a are closest to each other, the rear end of the grip unit 12a and the front end of the grip unit 14a do not come into contact with each other. In this case, even when the exercise aid 1 of the present invention is in its shortest state, the base 10, the first length adjustment part 11, and the second length adjustment part 12 can be seen from the outside. With this structure, it is possible to prevent the exerciser from getting their fingers caught between the grip parts when shortening the exercise aid 1.

[0048] On the other hand, as shown in Figure 1, when the length is adjusted so that the front end of the first length adjustment portion 11 (front end of the grip portion 11a) and the front end of the second length adjustment portion 12 (front end of the grip portion 12a) are positioned near the longitudinal rear end of the base 10, and further so that the front end of the third length adjustment portion 13 (front end of the grip portion 13a) is positioned near the rear end of the first length adjustment portion 11 and the front end of the fourth length adjustment portion 14 (front end of the grip portion 14a) is positioned near the rear end of the second length adjustment portion 12, the exercise aid 1 of the present invention will be in its longest state.

[0049] The size of the exercise aid 1 of the present invention can be designed appropriately depending on the attributes of the exerciser who will use it, but is not particularly limited as long as it does not contradict the spirit of the present invention. The length of the exercise aid 1 when fixed in the shortest state is preferably 550 mm or more, and more preferably 600 mm or more. Furthermore, the length of the exercise aid 1 when fixed in the shortest state is preferably 700 mm or less, and more preferably 750 mm or less.

[0050] The length of the exercise aid 1 when fixed in the longest state is preferably 1300 mm or more, more preferably 1350 mm or more, and preferably 1500 mm or less, more preferably 1450 mm or less when fixed in the longest state.

[0051] In this embodiment, the exercise assist device 1 is configured to include a base 10, a first length adjustment portion 11, a second length adjustment portion 12, a third length adjustment portion 13, and a fourth length adjustment portion 14. However, for example, the exercise assist device 1 may be configured to not include the third length adjustment portion 13 and the fourth length adjustment portion 14, and to be able to adjust the length using only the base 10, the first length adjustment portion 11, and the second length adjustment portion 12. Furthermore, in addition to the base 10, the first length adjustment portion 11, the second length adjustment portion 12, the third length adjustment portion 13, and the fourth length adjustment portion 14, other length adjustment portions may be provided at the rear ends of the third length adjustment portion 13 and the fourth length adjustment portion 14.

[0052] Next, an example of how the exercise aid of the present invention is used will be described. Figures 5 to 7 are diagrams showing an example of how the exercise aid of the present invention is used. In Figure 5, an exerciser 2 grasps both ends of the exercise aid 1 with each hand, stretches both arms forward, and, without bending both arms, moves the exercise aid 1 over the exerciser's head, then backward, and then from backward to above the exerciser's head, and then forward. If the exerciser 2 has high flexibility, the length of the exercise aid 1 can be adjusted to be shorter, and if the exerciser 2 has low flexibility, the length of the exercise aid 1 can be adjusted to be longer.

[0053] The exercise shown in Figure 6(a) involves grasping both ends of the exercise aid 1 with each hand and extending both arms forward. Without bending the arms, the exercise aid 1 is rotated counterclockwise as viewed from the exerciser, transitioning to a state where the left hand is on the bottom and the right hand is on the top. The arms are then crossed, transitioning to a state where the left hand is on the right and the right hand is on the left. From the crossed arms, the exercise aid 1 is then rotated clockwise, returning to a state where the arms are extended forward. As shown in Figure 6(b), from the crossed arms, the exercise aid 1 is rotated clockwise as viewed from the exerciser, without bending the arms, transitioning to a state where the right hand is on the bottom and the left hand is on the top. The arms are then crossed, transitioning to a state where the right hand is on the left and the left hand is on the right. From the crossed arms, the exercise aid 1 is then rotated counterclockwise, returning to a state where the arms are extended forward. If the exerciser 2 has high flexibility, the length of the exercise aid 1 can be adjusted to be longer, and if the exerciser 2 has low flexibility, the length of the exercise aid 1 is adjusted to be shorter.

[0054] In FIG. 7, one end of exercise aid 1 is in contact with the floor, and exerciser 2 is stretching with both hands placed on the other upper end of exercise aid 1, with both arms, back, and legs extended. When one end of exercise aid 1 is in contact with the floor, it is preferable to use an attachment 17d having a constriction, such as the attachment 17d shown in FIG. 4. By using attachment 17 having a constriction, attachment 17 bends and the contact surface with the floor becomes wider, allowing exercise aid 1 to be tilted stably. It is also preferable to use a hard material, such as a thermoplastic elastomer, for attachment 17 having a constriction.

[0055] Furthermore, the exercise aid 1 preferably includes an internal sensor. For example, the exercise aid 1 can be equipped with an acceleration sensor and a gyro sensor to measure the trajectory of the exercise aid 1 when the exerciser moves it. Preferably, one acceleration sensor and one gyro sensor are provided on each side of the exercise aid 1, symmetrically with respect to the longitudinal center line of the base 10. The sensors may be provided in the grip unit 15, the attachment unit 17, the length adjustment unit, the holding unit, or the base 10. Being able to measure the trajectory of the exercise aid 1 when the exerciser moves it allows the exerciser to store an ideal reference trajectory for the exercise aid 1, such as the trajectory of the exercise aid 1 when instructed by a trainer, in a smartphone or computer, and to check whether the trajectory of the exercise aid 1 when instructed by a trainer is being reproduced when exercising independently. Furthermore, even when an exerciser is receiving instruction from an instructor, it is possible to accurately evaluate whether the exercise aid 1 can be moved horizontally without changing its height, whether the left and right sides of the exercise aid 1 can be moved in the same trajectory, etc. Furthermore, if the exercise aid 1 is not being moved correctly, a notification to that effect may be given by sound or a display on the display screen. Notification by sound or a display on the display screen can be given by a smartphone or a PC. [Explanation of symbols]

[0056] 1 Exercise aids 10 base 11 First length adjustment part 11a Gripping part 12 Second length adjustment part 12a Grip part 13 Third length adjustment part 13a Gripping part 14 Fourth length adjustment part 14a Grip part 15 Grip section 16. Depression 17 Attachment part 18 Mating hole 19 Constriction 20 bumps 2 exerciser 21 Geometric Patterns 22 Zigzag lines

Claims

[Claim 1] A rod-shaped exercise aid that can be extended and contracted in the longitudinal direction, a base portion located at the center of the exercise aid in the longitudinal direction; a first length adjustment unit that can be slid and moved in the longitudinal direction from one end side of the base portion relative to the base portion; a second length adjustment portion that can be slid and moved in the longitudinal direction from the other end side of the base portion different from the one end side of the base portion; Equipped with The base portion and the first length adjustment portion can be fixed at any position, The base and the second length adjustment part can be fixed at any position. The first length adjustment portion and the second length adjustment portion are symmetrical with respect to a center line in the longitudinal direction of the base portion, The positions of the first length adjustment unit and the second length adjustment unit can be fixed so that the exercise aid is symmetrical with respect to the center line. Exercise aids.

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