JP2015084776A - Exercise aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an exercise aid which can easily adjust a load during a twisting exercise.SOLUTION: An exercise aid 1 for practicing a twisting exercise using both hands comprises: a pair of left and right cylindrical bodies 11, 12 arranged side by side on the same axis line; connection means for connecting the cylindrical bodies 11, 12 rotatably and independently of each other in a circumferential direction of the same axis; twisting coil springs 14, 15 housed inside the cylindrical bodies 11, 12 for generating resistance force against the rotation of the cylindrical bodies in the circumferential direction; and resistance force adjusting means for adjusting magnitude of the resistance force while the twisting coil springs 14, 15 are housed in the cylindrical bodies 11, 12. The resistance force adjusting means adjusts a load in practicing the twisting exercise in which the left and right cylindrical bodies are gripped by respective hands and rotated in opposite directions.

Description

  The present invention relates to an exercise assisting tool for performing a twisting exercise using both hands.

  Flexibility training is widely used in various situations to improve sports performance, prevent disability, or improve health. Especially for elderly people, maintaining flexibility, that is, having the ability to move flexibly within a large range of motion is considered to have a deep relationship with the ability to perform daily life, and training that does not reduce this ability It is important to do. However, little research has been done on the effects of flexibility training, and the methodology has been largely unclear.

  Anatomically, as a method to increase the range of motion of the scapula and clavicle from the function and structure of individual muscles, the rotator cuff attached to the scapula (supraspinatus, subspinous muscle, small circular muscle, scapula It is shown that a method of stretching while applying a twist to the lower muscle) is effective. If these ranges of motion increase, the deltoid muscles, great circular muscles, incisor arm muscles, etc. starting from the scapula will also be extended, which may lead to improvements in the range of motion and flexibility around the hip joint.

  Considering that many of the human muscles are attached in a spiral shape, it is thought that if the muscles are stretched while twisting, the flexibility is further improved. Torsion is the rotation of the limb around the long axis. As an assisting tool for performing such a torsional motion, there is one in which a load is applied during rotation by a pair of left and right grip bars that rotate in opposite directions (see, for example, Patent Documents 1 to 3).

Japanese Utility Model Publication No. 52-35098 Japanese Utility Model Publication No. 55-43073 JP-A-6-246017

  When the exercise assisting tools described in Patent Documents 1 to 3 are used, a torsional motion using both hands can be performed, but the load of the torsional motion cannot be adjusted.

  An object of the present invention is to provide an exercise aid that can easily adjust the load of torsional movement.

  The present invention is an exercise aid for torsional movement using both hands, and a pair of left and right cylinders arranged side by side on the same axis, and the cylinders are independent from each other in the circumferential direction on the same axis. And a connecting means that is rotatably connected, a resistance means that is accommodated in the cylindrical body and generates a resistance force against the rotation of the cylindrical body in the circumferential direction, and the resistance means is stored in the cylindrical body Variable resistance means capable of changing the magnitude of the resistance force in a state, and the resistance force is variable when a torsional motion is performed by gripping the left and right cylinders with both hands and rotating them in opposite directions. It is an exercise aid characterized by being adjustable by means.

  Further, in the present invention, the resistance means generates a force for returning the cylindrical body to a state before the rotation according to the circumferential displacement amount of the cylindrical body.

  Further, in the present invention, the resistance means is a torsion coil spring, and the resistance force changing means changes the effective winding number of the torsion coil spring by changing a fixing position of the wire of the torsion coil spring, and the resistance It is characterized in that the magnitude of the force can be changed.

  Further, in the present invention, the resistance force varying means includes a receiving member and a fixing member for fixing a part of the wire material of the torsion coil spring, and the torsion coil spring is slidably accommodated in the cylindrical body, The effective number of turns of the torsion coil spring can be changed by sliding the torsion coil spring in the cylinder and changing the position of the wire of the torsion coil spring fixed by the receiver and the fixture. And

  Further, in the present invention, the resistance force varying means includes a plurality of fixtures that fix the wire of the torsion coil spring at different positions, and the position of the wire of the torsion coil spring to be fixed is changed by the plurality of fixtures. Thus, the effective number of turns of the torsion coil spring can be changed without moving the torsion coil spring.

  Further, in the present invention, the resistance force varying means includes a plurality of fixed portions provided at different positions of the wire of the torsion coil spring, and a fixing member that fixes the fixed portion, and the fixed portion to be fixed. The effective number of turns of the torsion coil spring can be changed by changing.

  Further, in the present invention, the resistance force varying means includes a spiral tool having a spiral portion movable along a spiral groove between the wires of the torsion coil spring, and the spiral portion is twisted by the torsion coil spring. It is formed so as to be wound and fixed in a state, and the effective number of turns of the torsion coil spring can be changed by moving the spiral tool along a spiral groove between the wires of the torsion coil spring.

  Also, in the present invention, the resistance means is a pair of magnets, and the resistance force varying means changes the magnitude of the magnetic force formed by the pair of magnets by moving the position of the magnets, so that the resistance force It is characterized in that the size of can be changed.

  According to the exercise assisting tool of the present invention, since the magnitude of the resistance force can be changed while the resistance means is housed in the cylinder, it is possible to easily adjust the load when performing the torsional exercise. For this reason, it is very convenient.

It is a perspective view of the exercise assistance tool 1 of 1st Embodiment of this invention. It is a longitudinal cross-sectional view of the exercise assistance tool 1 of FIG. It is sectional drawing in the cutting line AA of the exercise assistance tool 1 of FIG. It is sectional drawing of the exercise assistance tool 2 of 2nd Embodiment of this invention. It is sectional drawing in the cutting line BB of the exercise assistance tool 2 of FIG. It is sectional drawing of the exercise assistance tool 3 of 3rd Embodiment of this invention. It is sectional drawing of the exercise assistance tool 4 of 4th Embodiment of this invention. It is sectional drawing in the cutting | disconnection line CC of the exercise assistance tool 4 of FIG. It is sectional drawing of the exercise assistance tool 5 of 5th Embodiment of this invention. It is sectional drawing in the DD cutting | disconnection line and EE cutting | disconnection line of the exercise assistance tool 5 of FIG. It is sectional drawing in the FF cutting | disconnection line of the exercise assistance tool 5 of FIG. It is sectional drawing of the exercise assistance tool 6 of 6th Embodiment of this invention. It is sectional drawing in the GG cutting line of the exercise assistance tool 6 of FIG.

  FIG. 1 is a perspective view of an exercise aid 1 according to the first embodiment of the present invention. FIG. 2 is a longitudinal cross-sectional view of the exercise assisting device 1 of FIG. 1, and (a) and (b) are different states of effective winding numbers of the torsion coil springs 14 and 15 of the exercise assisting device 1 of the first embodiment. Is shown. FIG. 3 is a cross-sectional view of the exercise aid 1 of FIG.

  The exercise assisting device 1 of the first embodiment is resistant to the rotation of the pair of left and right cylinders 11 and 12, the connecting means for rotatably connecting the cylinders 11 and 12 in the circumferential direction, and the cylinders 11 and 12. Torsion coil springs 14 and 15, which are resistance means for generating force, resistance force variable means for changing the resistance force (restoring force) of the torsion coil springs 14 and 15, grips 18 and 19 serving as handles, and cylinder Caps 20 and 21 that protect the ends of the bodies 11 and 12 are provided, and the caps 20 and 21 are arranged symmetrically with respect to the boundary between the cylinders 11 and 12.

  The cylinders 11 and 12 have a cylindrical shape and are provided with male screws that screw the caps 20 and 21 into the outer peripheral surface at one end. The two cylinders 11 and 12 are arranged side by side on the same axis, with one end provided with a male screw provided outside.

  The diameters of the cylinders 11 and 12 are preferably large enough to be gripped, and the length of each of the cylinders 11 and 12 is about two fists. However, the size of the cylinders 11 and 12 is not limited to a specific size. The shapes of the cylinders 11 and 12 are not limited to a cylindrical shape, and may be, for example, a rectangular tube shape, but a shape that is easy to grip is preferable.

  The material of the cylinders 11 and 12 is not limited to a specific material as long as it has a strength capable of withstanding torsional motion. For example, materials such as iron, aluminum, and synthetic resin can be appropriately selected and used. . In consideration of carrying, it is preferable to use a light material.

  The left and right cylinders 11 and 12 are provided with a scale 13 on the outer peripheral surface at one end serving as a boundary. The scale 13 can be appropriately marked with an angle or the like that serves as a standard when performing the torsional motion. Further, it is preferable that the scale 13 is color-coded according to the torsion angle, which is a rough guide when performing the torsional motion. The scale 13 may not be provided.

  Bearings 32a and 33a are press-fitted into the inner peripheral surfaces of the left and right cylinders 11 and 12 as connecting means. The left and right cylinders 11 and 12 are each provided with receiving members 51 and 52 on the inner peripheral surface as resistance force varying means, and screw holes 55 and 56 are provided at one place.

  These are arranged in the order of bearings 32a and 33a, screw holes 55 and 56, and receivers 51 and 52 from the boundary (center side) between the cylindrical bodies 11 and 12 toward the other end side (outside). The details of the bearings 32a and 33a, the receivers 51 and 52, and the screw holes 55 and 56 will be described later.

  The connecting means includes a single cylindrical connecting pipe 31, bearings 32a and 33a that are press-fitted into the inner peripheral surfaces of the left and right cylinders 11 and 12, and a bearing 32b that is press-fitted into the left and right caps 20 and 21, 33b and two left and right retaining pins 34, 35, the connecting pipe 31 is rotatably inserted into the left and right bearings 32a, 32b, 33a, 33b, and the retaining pins 34, 35 are formed into a cylindrical body. The left and right cylinders 11 and 12 are made independent of each other in the circumferential direction by being attached to and fixed to the connecting pipe 31 in contact with the bearings 32a and 33a so as to sandwich the bearings 32a and 33a press-fitted into the So that they can rotate freely and do not move in the longitudinal direction.

  Further, the connection pipe 31 has spring receiving grooves 36 and 37 through which the ends 41 and 42 of the torsion coil springs 14 and 15 are slidably inserted in the longitudinal direction, and have substantially the same length as the stroke in which the torsion coil springs 14 and 15 slide. Now it is provided symmetrically.

  The torsion coil springs 14 and 15 are springs that generate a resistance force (restoring force) when twisted in the circumferential direction, and in a state in which the connecting pipe 31 is inserted, a part of the wire rod is received by the holders 51 and 52 and the tube. In a state of being disposed in the gaps 53 and 54 between the bodies 11 and 12, one is stored in the left and right cylinders 11 and 12 symmetrically.

  The torsion coil springs 14 and 15 have one ends 41 and 42 on the center side inserted into the spring receiving grooves 36 and 37 of the connecting pipe 31 and are slidable in the longitudinal direction and restrained in the circumferential direction. The outer ends 43 and 44 of the torsion coil springs 14 and 15 are released.

  The material, the wire diameter, the coil diameter, and the number of turns of the wire rods of the torsion coil springs 14 and 15 can be appropriately determined so as to have a spring constant that matches the strength of the torsional motion. The maximum deflection angle (torsion angle) of the torsion coil springs 14 and 15 may be appropriately determined according to the angle at which the exercise assisting tool 1 is twisted when performing torsional motion.

  The resistance variable means includes: receiving members 51 and 52 provided on the inner peripheral surfaces of the left and right cylinders 11 and 12; screw holes 55 and 56 provided in the left and right cylinders 11 and 12; 52, and spring receivers 57 and 58 and fixing screws 59 and 60 as fixtures for fixing a part of the wire of the torsion coil springs 14 and 15 therebetween.

  The receptacles 51 and 52 are plates having an L-shaped cross section, and the end surfaces of the L-shaped short sides are attached to the inner peripheral surfaces of the outer end portions of the cylindrical bodies 11 and 12, and the L-shaped long sides and the cylindrical body 11, The gaps 53 and 54 in which the wire rods of the torsion coil springs 14 and 15 can slide are formed with the inner peripheral surface of the twelve. Further, the L-shaped long sides of the receivers 51 and 52 have a length equal to or longer than the stroke at which the torsion coil springs 14 and 15 slide so that the torsion coil springs 14 and 15 do not come off.

  The screw holes 55 and 56 are provided with a female screw on the inner peripheral surface, and are provided at a position where the central axis is orthogonal to the long axis of the L-shaped long side of the receivers 51 and 52.

  The spring receivers 57 and 58 are inserted into the screw holes 55 and 56. The spring receivers 57 and 58 have semicircular grooves, and receive a part of the wire rods of the torsion coil springs 14 and 15 in the grooves.

  The set screws 59 and 60 are attached to the screw holes 55 and 56. When the set screws 59 and 60 are tightened in a state where a part of the wire rod of the torsion coil springs 14 and 15 is sandwiched between the spring holders 57 and 58 and the holders 51 and 52, a part of the wire rod of the torsion coil springs 14 and 15 Is fixed.

  The grips 18 and 19 are attached to the outer peripheral surfaces of the left and right cylinders 11 and 12 one by one, and serve as handles for torsional movement. The material of the grips 18 and 19 is not limited to a specific material, but is preferably an elastic and easy-to-grip material such as synthetic resin or sponge. The grips 18 and 19 are mounted so that, for example, a frictional force is generated so as not to move with respect to the cylinders 11 and 12 during the twisting motion. The inner peripheral surfaces of the grips 18 and 19 and the outer peripheral surfaces of the cylinders 11 and 12 may be bonded with an adhesive or the like. The grips 18 and 19 are provided with through holes 71 and 72 at the positions of the screw holes 55 and 56 of the cylindrical bodies 11 and 12.

  The caps 20 and 21 have a bottomed cylindrical shape that covers the ends of the cylinders 11 and 12, bearings 32 b and 33 b are press-fitted to the bottom, and female threads are formed on the inner peripheral surface. In a state of being inserted into the bearings 32b and 33b, the cylindrical bodies 11 and 12 are screwed onto the end portions of the cylindrical bodies 11 and 12 for mounting. The material of the caps 20 and 21 is not limited to a specific material, but the same material as the grips 18 and 19 is preferably used in terms of appearance.

  In the exercise assisting tool 1 of the first embodiment configured as described above, when the grips 18 and 19 are gripped with both hands and the left and right cylinders 11 and 12 are twisted in opposite directions, the torsion coil springs 14 and 15 are connected to the connecting pipe. A resistance force (restoring force) is generated at the fulcrum of the ends 41 and 42 on the center side constrained by the spring receiving grooves 36 and 37 of 31 and the portions fixed by the set screws 59 and 60, and the resistance force is twisted. It becomes a load when performing.

  When the exercise assisting device 1 is released from the twisted state, the exercise assisting device 1 is rotated in the direction opposite to the twisted direction by the resistance force (restoring force) of the torsion coil springs 14 and 15, and no load is applied. Return to the state.

  When adjusting the torsional motion load of the exercise assisting tool 1, the caps 20 and 21 are removed, the set screws 59 and 60 are loosened, and the torsion coil springs 14 and 15 are slid in the longitudinal direction and fixed by the set screws 59 and 60. Change the position of the wire. When the set screws 59 and 60 are tightened again and the wire rods of the torsion coil springs 14 and 15 are fixed, the effective number of turns of the torsion coil springs 14 and 15 is changed, and the resistance force is changed. The effective number of turns is the number of turns between the ends 41 and 42 of the torsion coil springs 14 and 15 and the portions fixed to the set screws 59 and 60.

  When the torsion coil springs 14 and 15 are slid outward and the fixing position of the wire is changed, the effective number of turns of the torsion coil springs 14 and 15 decreases and the resistance increases. When the torsion coil springs 14 and 15 are slid to the center side to change the fixing position of the wire, the effective number of turns of the torsion coil springs 14 and 15 increases and the resistance force decreases.

  As described above, the exercise assisting tool 1 of the first embodiment has a large resistance force of the torsion coil springs 14 and 15 while being accommodated in the cylinders 11 and 12 without replacing the torsion coil springs 14 and 15. Since the height can be changed, the load when the torsional motion is performed can be easily adjusted. For this reason, it is very convenient.

  FIG. 4 is a cross-sectional view of the exercise assistance tool 2 according to the second embodiment of the present invention. FIG. 5 is a cross-sectional view of the exercise assisting tool 2 of FIG. 4 taken along the cutting line BB. The same code | symbol is attached | subjected to the structure same as the exercise assistance tool 1 of 1st Embodiment shown in FIGS. 1-3, and description is abbreviate | omitted. The exercise assistance tool 2 of the second embodiment has the same basic configuration as the exercise assistance tool 1 of the first embodiment, but differs in the configuration of the resistance force varying means.

  The exercise assisting tool 2 of the second embodiment includes, as resistance force varying means, receiving members 61a, 61b, 61c, 62a, 62b, 62c, spring receiving members 57a, 57b, 57c, 58a, 58b, 58c, set screws 59a, 59b, 59c, 60a, 60b, 60c and screw holes 55a, 55b, 55c, 56a, 56b, 56c are provided at three locations on each of the left and right cylinders 16, 17, and through holes 71a, 71b in the grips 22, 23 are provided. , 71c, 72a, 72b, 72c are also provided at three places on the left and right respectively. However, the resistance force varying means is not limited to three positions on each of the left and right cylinders 16 and 17, and may be provided at two positions or four or more positions.

  In addition, in the exercise assistance tool 2 of 2nd Embodiment, the external thread is not provided in the edge part of the cylinders 16 and 17. FIG. The grips 22 and 23 have a bottomed cylindrical shape so as to cover the ends of the cylinders 16 and 17 and do not require a cap. The bearings 32b and 33b press-fitted into the caps 20 and 21 by the exercise assisting device 1 of the first embodiment are press-fitted outside the inner peripheral surfaces of the cylinders 16 and 17, and the retaining pins 34 and 35 are the bearings. The bearings 32b and 33b are in contact with the bearings 32b and 33b so as to sandwich the 32b and 33b, and are attached to the connecting pipe 38. Instead of the spring receiving groove, the connecting pipe 38 is provided with a through hole through which the one ends 41 and 42 of the torsion coil springs 14 and 15 are inserted and restrained.

  The receiving devices 61a, 61b, 61c, 62a, 62b, 62c of the exercise assisting device 2 of the second embodiment are disk-shaped and have insertion holes 63, 64 through which the wire rods of the torsion coil springs 14, 15 can be inserted. Then, a part of the wire rods of the torsion coil springs 14 and 15 located in the insertion holes 63 and 64 are sandwiched and fixed by the spring receivers 57a, 57b, 57c, 58a, 58b, and 58c. The receptacles 61a, 61b, 61c, 62a, 62b, and 62c are press-fitted into the inner peripheral surfaces of the cylindrical bodies 16 and 17 so that the insertion holes 63 and 64 are in contact with the screw holes 55a, 55b, 55c, 56a, 56b, and 56c. And fixed.

  The adjustment of the load of the torsional motion of the exercise assisting tool 2 of the second embodiment is performed by changing the position where the set screws 59a, 59b, 59c, 60a, 60b, 60c are tightened. When the central set screws 59b and 60b are tightened from the state in which only the outer set screws 59a and 60a are tightened, the effective number of turns of the torsion coil springs 14 and 15 is reduced and the resistance force is increased. When the inner set screws 59c and 60c are further tightened, the effective number of turns of the torsion coil springs 14 and 15 is further reduced and the resistance is increased.

  As described above, in the exercise assisting tool 2 of the second embodiment, the resistance force of the torsion coil springs 14 and 15 is changed only by operating the set screws 59a, 59b, 59c, 60a, 60b, and 60c, and the load during the torsional exercise is reduced. Can be adjusted.

  FIG. 6 is a cross-sectional view of the exercise assisting tool 3 according to the third embodiment of the present invention. The same components as those of the exercise assistance tool 2 of the second embodiment shown in FIG. 4 and FIG. The exercise assistance tool 3 of the third embodiment has the same basic configuration as the exercise assistance tool 2 of the second embodiment, but differs in the configuration of the resistance force varying means.

  The exercise assisting tool 3 of the third embodiment has, as a resistance variable means, the receivers 61a, 61b, 61c, 62a, 62b, 62c, and spring receivers 57a, 57b, 57c, of the second embodiment. 58a, 58b, 58c and set screws 59a, 59b, 59c, 60a, 60b, 60c, instead of screw receivers 65a, 65b, 65c, 66a, 66b, 66c and head screws 67a, 67b, 67c, 68a, 68b, 68c.

  The screw receivers 65a, 65b, 65c, 66a, 66b, 66c are attached to a part of the wire rods of the torsion coil springs 14, 15 by welding or the like. The screw receivers 65a, 65b, 65c, 66a, 66b, 66c have a female screw portion, and the female screw portion has the same axis as the screw holes 55a, 55b, 55c, 56a, 56b, 56c of the cylindrical bodies 16, 17. It is attached so that it may be arranged on a line.

  The screws 67a, 67b, 67c, 68a, 68b, 68c are screw holes 55a, 55b, 55c, 56a, 56b of the cylinders 16, 17 so that they can be screwed together with the screw receivers 65a, 65b, 65c, 66a, 66b, 66c. , 56c. The screw holes 55a, 55b, 55c, 56a, 56b, and 56c do not have a female screw and may be a simple through hole.

  The adjustment of the load of the torsional motion of the exercise assisting tool 3 of the third embodiment is performed by changing the screw receivers 65a, 65b, 65c, 66a, 66b, 66c to be fixed as in the exercise assisting tool 2 of the second embodiment. Do. When the central screw receivers 65b and 66b are fixed from the state in which only the outer screw receivers 65a and 66a are fixed, the effective number of turns of the torsion coil springs 14 and 15 is reduced and the resistance force is increased. Further, when the inner screw receivers 65c and 66c are fixed, the effective number of turns of the torsion coil springs 14 and 15 is further reduced and the resistance force is increased.

  As described above, the exercise assisting tool 3 of the third embodiment also has the resistance of the torsion coil springs 14 and 15 only by operating the screws 67a, 67b, 67c, 68a, 68b, and 68c, like the exercise assisting tool 2 of the second embodiment. You can change the force and adjust the load during torsional motion.

  FIG. 7 is a cross-sectional view of the exercise assistance tool 4 according to the fourth embodiment of the present invention. FIG. 7A and FIG. 7B show states in which the effective number of turns of the torsion coil springs 14 and 15 of the exercise assisting tool 4 of the fourth embodiment is different. FIG. 8 is a cross-sectional view of the exercise aid 4 of FIG. The same code | symbol is attached | subjected to the structure same as the exercise assistance tool 1 of 1st Embodiment shown in FIGS. 1-3, and description is abbreviate | omitted.

  The exercise assisting device 4 of the fourth embodiment has the same basic configuration as the exercise assisting device 1 of the first embodiment, but the resistance variable means is different. Accordingly, the cylinders 24 and 25, the connecting means, and The configuration or shape of the caps 28 and 29 is different.

  The exercise assisting tool 4 according to the fourth embodiment includes one spiral tool 81 and one left and right spiral tool 81 and 82 for winding and fixing the torsion coil springs 14 and 15 as resistance force varying means. The spiral tools 81 and 82 include spiral portions 83 and 84 at the center, and male screws are provided at the top portions 85 and 86.

  The spiral portions 83 and 84 of the spiral tools 81 and 82 are movable along the spiral groove between the wire rods of the torsion coil springs 14 and 15 when the spiral tools 81 and 82 rotate, and the torsion coil springs 14 and 15. Is twisted so that the wire rods of the torsion coil springs 14 and 15 are wound around and fixed when twisted.

  The top portions 85 and 86 of the spiral tools 81 and 82 have a disk shape having an outer diameter that is substantially the same as the inner diameter of the cylinders 24 and 25, and are arranged so as to be substantially H-shaped in a cross-sectional front view. Grooves 87 and 88 are formed in the part. Further, male screws are formed on the outer peripheral surfaces of the top portions 85 and 86.

  The cylinders 24 and 25 of the exercise assisting tool 4 of the fourth embodiment are provided with female screws into which the male threads of the top portions 85 and 86 of the helical tools 81 and 82 are screwed onto one end on the outside. The cylinders 24 and 25 are not provided with screw holes.

  The connection means uses a length that does not interfere with the spiral tools 81 and 82 in the connection pipe 39. Instead of the outer bearings, the tips of the spiral tools 81 and 82 are inserted into the connection pipe 39 to serve as bearings. , To suppress the rattling when performing torsional motion.

  The caps 28 and 29 have substantially the same width as the grooves 87 and 88 provided in the top portions 85 and 86 of the spiral tools 81 and 82, and include the locking portions 73 and 74 inserted into the grooves 87 and 88, respectively. The locking portions 73 and 74 prevent the spiral tools 81 and 82 from rotating due to the resistance force of the torsion coil springs 14 and 15. For this reason, the caps 28 and 29 are attached to the cylinders 24 and 25 so that a frictional force larger than the resistance force of the torsion coil springs 14 and 15 acts. The caps 28 and 29 and the cylinders 24 and 25 may be provided with concave portions (not shown) and convex portions (not shown), respectively, and these may be fitted to prevent rotation.

  In the exercise assisting tool 4 of the fourth embodiment, the top portions of the spiral tools 81 and 82 are wound around the female screws of the cylindrical bodies 24 and 25 so that the spiral coil springs 14 and 15 are wound around the spiral portions 83 and 84 of the spiral tools 81 and 82. The male and female screws 85 and 86 are screwed together, and the spiral tools 81 and 82 are attached to the cylinders 24 and 25. Thereafter, the caps 28 and 29 are attached to the cylinders 24 and 25 so that the locking portions 73 and 74 of the caps 28 and 29 are inserted into the grooves 87 and 88 of the spiral tools 81 and 82.

  The adjustment of the load of the torsional motion of the exercise assisting tool 4 of the fourth embodiment is performed by removing the caps 28 and 29 and rotating the spiral tools 81 and 82 to wind the wire rods of the torsion coil springs 14 and 15 wound around the spiral portions 83 and 84. This can be done by changing the position of and changing the effective number of turns of the torsion coil springs 14 and 15.

  FIG. 9 is a cross-sectional view of the exercise assisting tool 5 according to the fifth embodiment of the present invention. FIG. 9A and FIG. 9B show a state where the positions of the magnets 91 of the exercise assisting tool 5 of the fifth embodiment are different. Fig.10 (a) is sectional drawing in the DD cutting | disconnection line of the exercise assistance tool 5 of FIG. FIG.10 (b) is sectional drawing in the EE cutting | disconnection line of the exercise assistance tool 5 of FIG. FIG. 11 is a cross-sectional view taken along the line FF of the exercise assisting tool 5 of FIG. The same components as those of the exercise assistance tool 2 of the second embodiment shown in FIG. 4 and FIG.

  The exercise assisting tool 5 of the fifth embodiment includes a pair of magnets 91 and 92 as resistance means instead of the torsion coil spring, and further rotates the left and right cylinders 121 and 122 when performing a torsional motion. Rotation restricting means for restricting within the angle is provided. In the exercise assistance tool 5 of the fifth embodiment, the magnetic force (attraction force) between the magnets 91 and 92 becomes a resistance force, which becomes a load when performing a torsional exercise.

  The cylinders 121 and 122 of the exercise assistance tool 5 of the fifth embodiment are cylindrical bodies and are not provided with screw holes or the like. The left grip 123 is a cylindrical body that covers the outer peripheral surface of the cylindrical body 121, and the right grip 124 is a bottomed cylindrical shape that covers up to the end of the cylindrical body 122, and is provided with a through hole or the like. Absent. A cap 126 is detachably attached only to the left cylinder 121. The cap 126 has a bottomed cylindrical shape, and a through hole 129 into which an adjusting rod 101 described later can be inserted is formed in the bottom.

  The connecting pipe 131 is formed with a female thread 133 on the inner peripheral surface of the left end, and a notch 135 is provided on the left side of the central part so that the connecting tool 102 described later can slide and rotate. In the exercise assisting tool 5 of the fifth embodiment, ring-shaped retaining rings 75 and 76 are attached to the coupling pipe 131 so as to sandwich the left and right outer bearings 32b and 33b, instead of retaining pins as coupling means. The left and right cylinders 121 and 122 are connected so as to be rotatable independently of each other in the circumferential direction and so as not to move in the longitudinal direction. The retaining rings 75 and 76 also serve as rotation restricting means, and are provided with protrusions 79 and 80 that can come into contact with rotation restricting pins 77a, 77b, 78a, and 78b, which will be described later.

  The left and right magnets 91 and 92, which are resistance means, have a ½ ring shape in a cross-sectional front view. Further, the magnets 91 and 92 are arranged so that the opposing surfaces have polarities that attract each other, and when the exercise assisting device 5 is in an unloaded state, the magnets 91 and 92 exactly overlap each other when viewed from the cross section.

  In the exercise assisting tool 5 of the present embodiment, the relative rotation angle between the cylinders 121 and 122 is restricted within 270 degrees as will be described later, and the left and right magnets 91 and 92 have the above-mentioned shape, polarity, and arrangement. Thus, when the left and right cylinders 121 and 122 rotate in the circumferential direction, a magnetic force is applied in a state where a part or all of the magnets 91 and 92 are always overlapped in a cross-sectional front view. Further, since the overlapping range of the magnets 91 and 92 decreases in inverse proportion to the circumferential displacement of the left and right cylinders 121 and 122, the magnetic force exerted by the magnets 91 and 92 on each other gradually decreases.

  The shape, polarity, and arrangement of the magnets 91 and 92 are not limited to this, and can be appropriately determined according to the content of the torsional motion. For example, when the opposing surfaces of the magnets 91 and 92 are arranged so as to have repulsive polarities, the cylindrical body 121 is oriented so that the magnets 91 and 92 are opposite to each other by 180 degrees in a cross-sectional front view in an unloaded state. 122 and the connecting pipe 131 are stationary. If the torsional motion is performed from this state, the overlapping range of the magnets 91 and 92 increases in proportion to the amount of displacement in the circumferential direction of the left and right cylinders 121 and 122. Therefore, the magnetic force exerted by the magnets 91 and 92 on each other is increased. It becomes stronger gradually.

  The magnet 92 disposed on the right cylinder 122 is fixed to the inner peripheral surface of the left end of the cylinder 122. A guide 105 that restricts the circumferential movement of the magnet 91 is attached to the inner peripheral surface of the right end of the left cylinder 121 in accordance with the front and rear strokes of the magnet 91. The magnet 91 arranged on the left cylinder 121 is arranged without being fixed in the gap of the guide 105, and when the cylinder 121 is rotated, it is pushed by the guide 105 and rotates together with the cylinder 121.

  The exercise assisting tool 5 of the fifth embodiment includes an adjusting rod 101 and a connecting tool 102 as resistance force varying means. The adjustment rod 101 is a columnar rod body. A hook groove 103 for hooking the connector 102 is formed in the distal end circumferential direction, and a male screw 104 that is screwed into the female screw 133 of the connection pipe 131 is formed at the other end. ing. The adjusting rod 101 is inserted into the connecting pipe 131, screwed into the female thread 133 of the connecting pipe 131, and fixed with the nut 106.

  The connector 102 is formed in a Y shape in a cross-sectional front view so as to be hooked on the hooking groove 103 of the adjusting rod. A magnet 91 is fixed to the bottom of the connector 102. The connecting tool 102 is attached to the hooking groove 103 of the adjusting rod 101 by hooking a Y-shaped recess through the notch 135 of the connecting pipe 131 and connects the adjusting rod 101 and the magnet 91.

  The rotation restricting means includes rotation restricting pins 77a, 77b, 78a, 78b attached to the left and right cylinders 121, 122 and retaining rings 75, 76 attached to the connecting pipe 131. The relative rotation angle between 122 is restricted to within 270 degrees. However, the restricted rotation angle is not limited to a specific angle, and can be appropriately determined according to the content of the torsional motion. In addition, the notch 135 of the connection pipe 131 needs to have an angle larger than the rotation angle of the cylinders 121 and 122 controlled by the rotation control means so as not to interfere with the connection tool 102 when performing the twisting motion.

  The attachment method of the rotation restricting pins 77a, 77b, 78a, 78b is not limited to a specific method, and a method of attaching the through holes in the cylinders 121, 122 and press-fitting them into the through holes, welding, or the like. Can be installed. Further, instead of the rotation restricting pins 77a, 77b, 78a, 78b, the outer peripheral surfaces of the cylinders 121, 122 may be depressed to provide convex portions (not shown) on the inner peripheral surface.

  The two rotation restricting pins 77a and 77b attached to the left cylinder 121 are attached so as to have an angle of 90 degrees in the circumferential direction. The two rotation restricting pins 78a and 78b attached to the right cylinder 122 are also attached in the same manner.

  The left and right retaining rings 75 and 76 are attached to the two rotation restricting pins 77a, 77b, 78a, and 78b that are in contact with each other so that the projections 79 and 80 have an angle of 135 degrees on the left and right in the circumferential direction. .

  In the exercise assisting tool 5 of the fifth embodiment configured as described above, the coupling 126 is removed by removing the cap 126, loosening the nut 106, rotating the male screw 104 of the adjusting rod 101, and moving the adjusting rod 101 back and forth. By sliding the magnet 91 connected in the forward and backward directions, the distance between the magnets 91 and 92 can be changed, and the load when the torsional motion is performed can be adjusted. When the distance between the magnets 91 and 92 is changed, the magnetic force (attraction force) acting on each other is changed, and the load when the torsional motion is performed is changed. The through hole 129 of the cap 126 may be enlarged so that the nut 106 can be operated without removing the cap 126.

  Thus, also in the exercise assistance tool 5 of 5th Embodiment, the load at the time of performing a twist exercise | movement can be adjusted in the state which accommodated the resistance means in the cylinders 121 and 122. FIG. In addition, since the magnet is smaller and lighter than the torsion coil spring, the use of the magnet can reduce the weight of the exercise assisting tool.

  FIG. 12 is a cross-sectional view of the exercise assistance tool 6 according to the sixth embodiment of the present invention. FIG. 12A and FIG. 12B show a state in which the positions of the cylinder-side magnets 93 and 94 of the exercise assisting tool 6 of the sixth embodiment are different. 13 is a cross-sectional view taken along the line GG of the exercise assisting tool 6 of FIG. The same code | symbol is attached | subjected to the structure same as the exercise assistance tool 5 of 5th Embodiment shown in FIGS. 9-11, and description is abbreviate | omitted. The exercise assistance tool 6 of the sixth embodiment has the same basic configuration as the exercise assistance tool 5 of the fifth embodiment, but is different in the arrangement of magnets as resistance means.

  The exercise assisting tool 6 of the sixth embodiment includes cylinder side magnets 93 and 94 arranged as resistance means, one on each of the left and right cylinders 121 and 122, and two pipe side magnets 95 fixed to the connecting pipe 132. 96. The left and right cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 serve as a pair of resistance means, and the magnetic force (repulsive force) acting on each other becomes a resistance force, which becomes a load when performing torsional motion.

  The cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 have a ½ ring shape in a cross-sectional front view. The cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 are disposed on the cylinders 121 and 122 and the connecting pipe 132, respectively, so as to have substantially the same length and partially or entirely overlap in the longitudinal direction. The Moreover, it is preferable that the left and right cylinder side magnets 93 and 94 are separated from each other so as not to exert a magnetic force on each other, or provided with a partition (not shown) that blocks the magnetic force.

  The cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 are arranged on the cylinders 121 and 122 and the connection pipe 132 so that the surfaces facing each other have repulsive polarities. For this reason, in a no-load state, the cylinders 121 and 122 and the connection pipe 132 are stationary in a direction in which the cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 are positioned 180 degrees opposite in a cross-sectional front view. The polarities of the cylinder side magnets 93 and 94 and the pipe side magnets 95 and 96 shown in FIG. 12 are merely examples, and the present invention is not limited thereto.

  The cylindrical side magnets 93 and 94 and the pipe side magnets 95 and 96 have the above-mentioned shape, polarity, and arrangement so that when the left and right cylindrical bodies 121 and 122 rotate in the circumferential direction, the cylindrical side magnets 93 and 94 and the pipe Magnetic force is applied in a state in which a part or all of the side magnets 95 and 96 are always overlapped when viewed from the front in the cross section. Further, since the range in which the cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 overlap in a cross-sectional front view increases in proportion to the circumferential displacement of the left and right cylinders 121 and 122, the cylinder-side magnet 93, The magnetic force which 94 and the pipe side magnets 95 and 96 exert on each other gradually increases. The shapes, polarities, and arrangements of the cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 are not limited to this, and are similar to the exercise assisting tool 5 of the fifth embodiment, depending on the content of the torsional movement. It can be determined as appropriate.

  The connection pipe 132 is provided with female screws 133 and 134 and notches 135 and 136 that are the same as the connection pipe 131 of the exercise assisting tool 5 of the fifth embodiment in left and right symmetry, and a pipe-side magnet on the outer peripheral surface of the central portion. Two 95 and 96 are provided symmetrically.

  The exercise assisting tool 6 according to the sixth embodiment includes adjustment rods 101 and 111 having hooking grooves 103 and 113 and female screws 104 and 114, connecting tools 102 and 112, guides 105 and 115, nuts 106 and 116, and a cylindrical shape. Caps 126 and 127 each having grips 123 and 125 and through-holes 129 and 130 are provided on both the left and right sides, and cylindrical body magnets 93 and 94 are fixed to coupling members 102 and 112. Since these structures and functions are the same as those of the exercise assistance tool 5 of the fifth embodiment, the description thereof is omitted.

  As with the exercise assisting tool 5 of the fifth embodiment, the exercise assisting tool 6 of the sixth embodiment removes the caps 129, 130, loosens the nuts 106, 116, and rotates the male screws 104, 114 of the adjusting rods 101, 111. By changing the positions of the cylinder-side magnets 93 and 94, the range in which the cylinder-side magnets 93 and 94 and the pipe-side magnets 95 and 96 overlap in the longitudinal direction is changed, and the magnetic force (repulsive force) acting on each other is changed. The load when exercising is changed.

  As mentioned above, although the exercise assistance tool of this invention was demonstrated using the exercise assistance tool of 1st to 6th embodiment, the exercise assistance tool of this invention is not limited to the said embodiment, A summary is not changed. It can be used after being deformed in range.

  For example, the rotation aids used in the exercise aids 5 and 6 of the fifth and sixth embodiments also apply to the exercise aids 1, 2, 3, and 4 of the first to fourth embodiments using the torsion coil springs 14 and 15. Restricting means may be provided.

  The resistance means of the exercise assisting tool is not limited to the torsion coil spring and the magnet. For example, the two friction bodies (not shown) are housed one by one in the left and right cylinders, and the friction body The close contact degree may be adjusted by the resistance variable means. As other resistance means, for example, air pressure can be suitably used.

1, 2, 3, 4, 5, 6 Exercise aids 11, 12, 16, 17 Cylinders 24, 25, 121, 122 Cylinders 14, 15 Torsion coil springs 31, 38, 39, 131 Connection pipe 132 Connection pipe 32, 32a, 32b Bearing 33, 33a, 33b Bearing 34, 35 Retaining pin 51, 52 Receiving tool 61a, 61b, 61c Receiving tool 62a, 62b, 62c Receiving tool 55, 55a, 55b Screw hole 55c Screw hole 56, 56a , 56b Screw hole 56c Screw holes 57a, 57b, 57c Spring receivers 58a, 58b, 58c Spring receivers 59, 59a, 59b Set screw 59c Set screw 60, 60a, 60b Set screw 60c Set screw 61, 61a, 61b Tool 61c Screw receiving device 62, 62a, 62b Screw receiving device 62c Screw receiving device 67a, 67b, 67c Screw 8a, 68b, 68c screws 75 and 76 retaining ring 81, 82 helical member 83, 84 the spiral portions 91 and 92 magnet 93, 94 the cylinder-side magnets 95 and 96 pipe-side magnets 101 and 111 control rod

The present invention is an exercise aid for torsional movement using both hands, and a pair of left and right cylinders arranged side by side on the same axis, and the cylinders are independent from each other in the circumferential direction on the same axis. And a connecting means that is rotatably connected, a resistance means that is accommodated in the cylindrical body and generates a resistance force against the rotation of the cylindrical body in the circumferential direction, and the resistance means is stored in the cylindrical body Resistance force variable means capable of changing the magnitude of the resistance force in a state, wherein the resistance means is a torsion coil spring, and the resistance force variable means fixes a part of the wire of the torsion coil spring. The torsion coil spring is slidably accommodated in the cylindrical body, and the torsion coil spring is slid in the cylindrical body and fixed by the receiver and the fixing tool. Torsion coil spring wire By changing the position, the can be changed to effective turns the change of the resistance magnitude of the torsion coil spring, a twisting motion by rotating each other holding the cylindrical body of the right and left hands in the opposite direction The exercise assisting device is characterized in that a load when performing can be adjusted by the resistance variable means.

Claims (8)

An exercise aid for torsional exercises using both hands,
A pair of left and right cylinders arranged side by side on the same axis;
Connecting means for connecting the cylinders to each other in the circumferential direction on the same axis so as to be rotatable independently of each other;
A resistance means that is housed in the cylinder and generates a resistance to rotation in a circumferential direction of the cylinder;
A resistance force varying means capable of changing the magnitude of the resistance force in a state where the resistance means is housed in the cylindrical body,
An exercise assisting device, wherein a load when the left and right cylindrical bodies are grasped with both hands and rotated in opposite directions to perform a torsional movement can be adjusted by the resistance variable means.   The exercise assisting device according to claim 1, wherein the resistance means generates a force to return the cylindrical body to a state before rotation according to a displacement amount in a circumferential direction of the cylindrical body. The resistance means is a torsion coil spring;
2. The resistance force varying means can change the effective winding number of the torsion coil spring by changing a fixing position of the wire of the torsion coil spring, and can change the magnitude of the resistance force. Or the exercise assistance tool of 2. The resistance variable means includes a receiving tool and a fixing tool for fixing a part of the wire of the torsion coil spring,
The torsion coil spring is slidably accommodated in the cylinder,
The effective number of turns of the torsion coil spring can be changed by sliding the torsion coil spring in the cylinder and changing the position of the wire of the torsion coil spring fixed by the receiver and the fixture. The exercise assisting device according to claim 3, wherein The resistance force varying means includes a plurality of fixtures for fixing the wire material of the torsion coil spring at different positions,
The effective number of turns of the torsion coil spring can be changed without moving the torsion coil spring by changing the position of the wire of the torsion coil spring to be fixed by the plurality of fixing tools. The exercise support described. The resistance force varying means includes a plurality of fixed portions provided at different positions of the wire of the torsion coil spring, and a fixture for fixing the fixed portion,
The exercise assisting device according to claim 3, wherein the effective number of turns of the torsion coil spring can be changed by changing the fixed portion to be fixed. The resistance force varying means includes a spiral tool having a spiral portion movable along a spiral groove between wires of the torsion coil spring,
The spiral portion is formed so that the torsion coil spring is wound and fixed in a twisted state,
The exercise assisting device according to claim 3, wherein the effective number of turns of the torsion coil spring can be changed by moving the spiral tool along a spiral groove between the wires of the torsion coil spring. The resistance means is a pair of magnets,
The resistance force varying means can change the magnitude of the resistance force by changing the magnitude of the magnetic force formed by the pair of magnets by moving the position of the magnet. The exercise assisting device according to 2.

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