Muscle strength training equipment

Abstract

To provide a muscle force training tool which can easily adjust, an exercise load.SOLUTION: A muscle force training tool 1 comprises: a drum 16 which is energized to one direction around an axis 161 by an osmund spring 17; a rope body 14 wound to the drum; and a case 10 for storing them, and deriving to outside, the rope body 14. The muscle force training tool 1 sets a load of the rope body 14 when the rope body is drawn or is wound, to an exercise load. By a rotation angle position of a load adjusting dial 18 fastened to the rotary axis 161 at outside of the case 10, an initial value of energization force of the osmund spring 17 can be adjusted. A dial holding mechanism 19 comprises: an inner gear 22, a transmission spur gear 23, a drive spur gear 24 which are sequentially engaged, and a ball plunger 25 on the load adjusting dial 18. By rotation resistance by the ball plunger 25 engaged to an engagement recess part 124 of the case 10, the load adjusting dial 18 is held to a position which is set by the user.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a muscle training device that pulls out and rewinds a rope body wound around a drum rotationally biased by a spiral spring against the spring force, and uses the resistance force of the operation as an exercise load.

Background Art

[0002] Conventionally, as a health promotion device for exercising muscles, the one described in Patent Document 1 is known. This device includes a case body formed by an upper lid and a lower lid, a drum installed inside the case body with a spring inside and a rope wound around the periphery, a handle provided at one end of the rope, a first roller part and a second roller part for sliding the rope, and an adjustment mechanism provided on the central axis so as to change the winding force of the spring.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above conventional health promotion device, in order to adjust the exercise load, when adjusting the winding force of the spring with the adjustment mechanism, the head of the screw part must be rotated using a tool such as a wrench, and a user without a tool cannot easily rotate and adjust it. Therefore, an object of the present invention is to provide a muscle training device having a configuration different from the above conventional health promotion device and capable of easily adjusting the exercise load.

Means for Solving the Problems

[0005] In the following description, reference is made to the reference numerals in the accompanying drawings, but the present invention is not limited thereto. To solve the above problems, the muscle strength training device 1 of the present invention includes a drum 16 that rotates around a rotation axis 161 and is biased in one direction around the axis by a torsion spring 17, a cord body 14 with one end wound around the drum 16 and a connection portion 141 at the other end, and a case 10 that houses the drum 16 and the cord body 14 wound around it, supports the rotation axis 161 of the drum 16, and has an entrance / exit 122 through which the cord body 14 passes in and out. It is a muscle strength training device that uses the resistance against the pulling out and rewinding operations of the cord body 14 on the drum 16 by the user as an exercise load. The muscle strength training device 1 includes a load adjustment dial 18 that is fixed to the rotation axis 161 of the drum 16 outside the case 10 and can adjust the initial value of the biasing force of the torsion spring 17 on the drum 16 according to the rotation angle position, and a dial holding mechanism 19 that can hold and release this at a predetermined rotation angle position with respect to the case 10. The dial holding mechanism 19 includes an internal gear 22 fixed to the load adjustment dial 18, a transmission spur gear 23 rotatably supported on the case 10 so as to mesh with it, a drive spur gear 24 fixed to the rotation axis 161 of the drum 16 so as to mesh with it, and a ball plunger 25 fixed to the load adjustment dial 18 so as to engage with and disengage from an engagement recess 124 formed on the side surface of the case 10 at a predetermined rotation angle interval around the rotation axis of the drum 16. Since the rotational resistance between the load adjustment dial 18 and the case 10 due to the engagement between the ball plunger 25 and the engagement recess 124 is set to be greater than the biasing force of the torsion spring 17 on the drum 16, the load adjustment dial is held without rotating from a predetermined rotation angle position. Thereby, the user can configure the load adjustment dial 18 to be rotatable forward and backward at predetermined rotation angles.

Advantages of the Invention

[0006] According to the present invention, by rotating the load adjustment dial 18 with finger operation against the rotational resistance by the ball plunger 25, the exercise load can be easily adjusted.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Embodiments for Carrying Out the Invention

[0008] Embodiments of the present invention will be described with reference to the drawings. The muscle training device 1 is assembled to a case 10 having a dumbbell-shaped outer shape. The case 10 has a handle portion 11 in the shape of a small-diameter pipe, and first and second accommodating portions 12, 13 having a larger diameter and being generally cylindrical, which are connected to both ends thereof. The muscle training device 1 is a training device that pulls out and rewinds the first and second cable bodies 14, 15 of the automatic winding type led out from the case 10, and exercises the muscle strength using the resistance during the rewinding operation as an exercise load.

[0009] The muscle training device 1 includes a first drum 16 provided in the first accommodating portion 12, a first spiral spring 17, a first cable body 14, a load adjustment dial 18, and a dial holding mechanism 19, and a second drum 20 provided in the second accommodating portion 13, a second spiral spring 21, and a second cable body 15.

[0010] The first and second drums 16, 20 are rotatably supported in the first and second accommodating portions 12, 13, respectively, and are connected to each other so as to rotate integrally by a rotating shaft 161 passing through the handle portion 11.

[0011] The first and second spiral springs 17 and 21 are respectively locked at one end to the rotating shaft 161 and at the other end to the outer peripheral walls 121 and 131 of the first and second accommodating portions 12 and 13 within the first and second accommodating portions 12 and 13. Accordingly, the first and second drums 16 and 20 are rotationally biased in one direction by the first and second spiral springs 17 and 21 respectively.

[0012] One end sides of the first and second cable bodies 14 and 15 are respectively wound around the first and second drums 16 and 20, and the other end sides are led out from the entrances and exits 122 and 132 of the first and second accommodating portions 12 and 13. The first and second cable bodies 14 and 15 are respectively provided with connecting portions 141 and 151 at their other ends, and are constantly biased in the direction of being wound around the first and second drums 16 and 20.

[0013] The load adjustment dial 18 is fixed to one end of the rotating shaft 161 on the outside of the outer wall 123 of the first accommodating portion 12. The load adjustment dial 18 can be rotated by the user's finger, and by rotating it, the spiral springs 17 and 21 can be tightened or unwound. The initial value of the biasing force of the spiral springs 17 and 21 against the drums 16 and 20 can be adjusted according to the rotational angular position of the load adjustment dial 18.

[0014] The dial holding mechanism 19 holds the load adjustment dial 18 against the spring force at a plurality of predetermined rotational angular positions, and is assembled on the outside of the outer wall 123 of the first accommodating portion 12, and includes an internal gear 22, a transmission spur gear 23, a drive spur gear 24, and a ball plunger 25. The dial holding mechanism 19 is covered by a gear cover 27 so as not to be exposed to the outside.

[0015] The internal gear 22 is fixed to the load adjustment dial 18. The transmission spur gear 23 is rotatably supported on the outer wall 123 of the first accommodating portion 12 by a pivot 26 and meshes with the internal gear 22. The drive spur gear 24 is fixed to the rotating shafts 161 of the drums 16, 20 and meshes with the transmission spur gear 23. The gear ratio is set so that the rotating shaft 161 rotates six times when the load adjustment dial 18 makes one full rotation, and the maximum load on the pulling out of the cable bodies 14, 15 is achieved by one clockwise rotation of the load adjustment dial 18.

[0016] The ball plunger 25 is fixed to the load adjustment dial 18 and is provided so as to engage with and disengage from an engagement recess 124 formed on the outer surface of the outer wall 123 of the first accommodating portion 12. Eight engagement recesses 124 are formed at 45° intervals around the rotating shaft 161. When the ball plunger 25 engages with the engagement recess 124, the load adjustment dial 18 is held without rotating even if the cable bodies 14, 15 are pulled out, and it will not rotate without manual operation. If a scale and a pointer are displayed on the outer peripheral edge of the load adjustment dial 18 and the inner peripheral edge of the first accommodating portion 12 surrounding it, the magnitude of the initial load set at the position of the scale indicated by the pointer can be confirmed.

[0017] When using the muscle strength training device 1, for example, the connection portions 141, 151 of the cable bodies 14, 15 are locked to a structure, and the user performs an exercise of gripping the handle portion 11 and swinging the device. Due to this swinging motion, the first and second cable bodies 14, 15 are wound around and unwound from the drums 16, 20, and the exercise load by the spiral springs 17, 21 is applied to the user during both forward and backward strokes of the swing.

[0018] Also, for example, a pair of muscle strength training devices 1 connected to each other by the cable bodies 14, 15 are held in both hands, and by pulling up one arm or opening and closing both arms in various postures such as standing, sitting, and lying positions, it can be used for highly flexible training that effectively loads the target muscle groups.

Explanation of Signs

[0019] 1 Muscle strength training device 10 Case 11 Handle part 12 First accommodating part 121 Outer peripheral wall 122 Entrance / exit 123 Outer wall 124 Engaging recess 13 Second accommodating part 131 Outer peripheral wall 132 Entrance / exit 14 First cable body 141 Connection part 15 Second cable body 151 Connection part 16 First drum 161 Rotation axis 17 First spiral spring 18 Load adjustment dial 19 Dial holding mechanism 20 Second drum 21 Second spiral spring 22 Internal gear 23 Transmission spur gear 24 Driving spur gear 25 Ball plunger 26 Pivot 27 Gear cover

Claims

1. A drum that rotates around a rotating shaft and is biased in one direction around the shaft by a torsion spring, A cable whose one end is wound around the drum and has a locking portion at the other end, A case that houses the drum and the cable wound around the drum, supports the rotating shaft of the drum, and has an entrance / exit through which the cable passes in and out, A muscle strength training device that uses the resistance force against the user's operation of pulling out and rewinding the cable with respect to the drum as an exercise load, A load adjustment dial that is fixed to the rotating shaft of the drum outside the case and can adjust the initial value of the biasing force of the torsion spring with respect to the drum according to the rotational angular position, A dial holding mechanism that can hold and release the load adjustment dial at a predetermined rotational angular position with respect to the case, The dial holding mechanism includes an internal gear fixed to the load adjustment dial, a transmission spur gear rotatably supported by the case so as to mesh with the internal gear, a drive spur gear fixed to the rotating shaft of the drum so as to mesh with the transmission spur gear, and a ball plunger fixed to the load adjustment dial so as to engage with and disengage from engagement recesses formed on the side surface of the case at predetermined rotational angular intervals around the rotating shaft of the drum, A muscle strength training device, wherein the rotational resistance between the load adjustment dial and the case due to the engagement between the ball plunger and the engagement recess is set to be greater than the biasing force of the torsion spring with respect to the drum, whereby the user can adjust the load adjustment dial to rotate forward and backward at predetermined rotational angles.

2. The case includes two accommodating portions, a first and a second, and a handle portion connecting the first and second accommodating portions, The drum, the cable, and the dial holding mechanism are provided in the first accommodating portion, and the cable is pulled out from the entrance / exit of the first accommodating portion, The rotating shaft of the drum extends into the second accommodating portion through the handle portion, The second accommodating portion houses a second drum fixed to the rotating shaft of the drum, a second cable wound around the second drum, and a second torsion spring that rotationally biases the second drum, and the second cable is pulled out from the entrance / exit of the second accommodating portion. The muscle strength training device according to claim 1, characterized in that.

3. A muscle strength training device, characterized in that a pair of the muscle strength training devices according to claim 2 are connected to each other by the first and second cable bodies.

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