JP2002263212A - Exercise load generation device for exercise apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To regulate a dimension of an exercise load to be generated over a wider range. SOLUTION: On one side of a rotation plate 35 rotationally driven by a pedaling motion, a first magnet 47 is arranged, while a second magnet 48 is arranged on the other side. The second magnet 48 is supported to be switched between a vicinity position close to the rotation plate 35 and a separate position apart from it by means of a magnet shifting mechanism 49. The magnet shifting mechanism 49 is constructed of a magnet supporting member 52, which is supported movably in the rotation axis direction and prevented from turning in this direction for supporting the second magnet 48, a first front face cam member 50 supported rotationally and movably around the rotation axis for displacing the magnet supporting member 52 axially, and a second front face cam member 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exercise load generating apparatus for an exercise equipment for generating a load resistance of a desired magnitude for a pedaling exercise performed on an exercise equipment using a bicycle, for example.

[0002]

2. Description of the Related Art Conventionally, such a load generator as described above applies an appropriate exercise load to a pedaling exercise of a bicycle in accordance with the physical strength of the exerciser, and provides an exercise effect in accordance with the physical strength of the exerciser. Have been used to gain. The present applicant has disclosed in Japanese Patent Application Laid-Open No.
A “resistance applying device” disclosed in Japanese Patent No. 90078 is proposed.

As shown in FIG. 13, in this resistance applying device, a driving cylinder 80 is rotated by a rear wheel R of a bicycle, and a metal rotating plate 82 fixed to a rotating shaft 81 supporting the driving cylinder 80. Is driven to rotate. Then, the rotating plate 82
Ring-shaped movable permanent magnets 83 arranged on both sides of
In addition, an eddy current is generated in the rotating plate 82 by the magnetic flux of the fixed permanent magnet 84. Then, a reaction torque due to the interaction between the magnetic flux generated by the eddy current and the magnetic fluxes of the two permanent magnets 83 and 84 is applied as a load resistance to the rotation of the rotating plate 82.

More specifically, the movable permanent magnet 83 is divided into a plurality of fan-shaped magnetized regions at an equal angle about the center axis. Each magnetized region is magnetized in the direction of the central axis, and is magnetized so that the direction of magnetization is opposite between adjacent ones in the circumferential direction. Similarly, a plurality of magnetized regions are also formed in the fixed permanent magnet 84. When the respective magnetized regions of the movable permanent magnet 83 having the same magnetization direction and the respective magnetized regions of the fixed permanent magnet 84 are arranged at positions where they completely overlap in the axial direction, the rotating plate 82
And the magnitude of the anti-torque applied to the rotating plate 82, that is, the exercise load, is maximized. Also,
The magnitude of the exercise load is such that the movable permanent magnet 83 is relatively rotated around the central axis with respect to the fixed permanent magnet 84, and the magnetized regions of the permanent magnets 83, 84 having the same magnetization direction overlap in the axial direction. It is adjusted by reducing the area from the maximum and reducing the magnetic flux passing through the rotating plate from the maximum. Therefore, when the respective magnetization regions of the movable-side permanent magnet 83 and the respective magnetization regions of the fixed-side permanent magnet 84 whose magnetization directions are opposite to each other are arranged at positions where they completely overlap in the axial direction view,
The magnetic flux penetrating through the rotating plate 82 is minimized, and the generated exercise load is minimized.

The maximum value of the exercise load generated by the resistance applying device is assumed to be the maximum value that can be generated by an anti-torque generating mechanism due to eddy current, assuming that an athlete with strong physical strength uses the exercise load. ing. For this reason, the anti-torque generating mechanism includes a permanent magnet 83 having a larger magnetic flux density.
84, the two permanent magnets 83 and 84 and the rotating plate 82 are used.
Is set to be larger. The axial distance between the permanent magnets 83 and 84 and the rotary plate 82 is set as small as possible.

[0006]

However, as described above, the magnetized regions of the movable permanent magnet 83 and the fixed permanent magnet 84 having the same magnetization direction do not completely overlap in the axial direction. Even so, the magnitude of the generated exercise load could not be sufficiently reduced from the maximum value. This is because the movable-side permanent magnets 83 that are adjacent in the axial direction
This is because a magnetic circuit is also formed between the magnetized regions of the fixed-side permanent magnet 84 and the magnetic flux penetrates the rotating plate 82. Therefore, the adjustment range of the exercise load generated in the pedaling exercise cannot be adjusted in a wide range from the strength required by the athlete with strong physical strength to the strength required by the elderly with weak physical strength.

This applies not only to exercise equipment that generates an exercise load in pedaling exercise, but also to a load generation device in other exercise equipment that can generate exercise load by converting exercise into rotation of a rotating plate. It is.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a load resistance generating apparatus for an exercise equipment capable of adjusting the magnitude of the generated exercise load in a wider range. Is to provide.

[0009]

In order to solve the above-mentioned problems, the present invention according to claim 1 comprises a metal rotating plate rotatably supported and driven to rotate by the motion of an exerciser,
Exercise equipment comprising: a first magnet disposed on one side in the rotation axis direction with respect to the rotation plate; and a second magnet disposed on the other side in the rotation axis direction with respect to the rotation plate. Motion adding device, wherein the first magnet and the second
The gist of the invention is to provide a distance adjusting means for adjusting a distance between at least one of the magnets and the rotating plate in the direction of the rotation axis.

According to the first aspect of the present invention, the distance between the rotating plate and at least one of the first magnet and the second magnet in the direction of the rotation axis is adjusted, so that the rotating plate is rotated by electromagnetic action when the rotating plate is rotated. The magnitude of the anti-torque applied to is adjusted. Therefore, the adjustment range of the magnitude of the anti-torque applied to the rotating plate is expanded as compared with a case where both magnets are relatively rotated around the rotation axis without changing the distance between the first magnet and the second magnet and the rotating plate.

According to a second aspect of the present invention, in the first aspect of the present invention, the distance adjusting means adjusts a position of the first magnet or the second magnet with respect to the rotating plate in the direction of the rotation axis. The gist is that

According to the invention described in claim 2, according to claim 1
In addition to the operation of the invention described in the above, when the position of the first magnet or the second magnet with respect to the rotating plate in the direction of the rotation axis is adjusted, the distance between the first magnet or the second magnet and the rotating plate changes. Therefore, the distance between the first magnet or the second magnet and the rotating plate can be adjusted with a simpler configuration than when the rotating plate that is rotationally driven is moved in the rotation axis direction. For this reason, the number of parts and the number of assembly steps can be prevented from increasing as much as possible.

According to a third aspect of the present invention, in the second aspect of the present invention, the distance adjusting means is supported so as to be movable in the direction of the rotation axis and not to rotate around the rotation axis. A magnet support member that supports the first magnet or the second magnet, and the magnet support member that is supported rotatably about the rotation axis and is not displaceable in the rotation axis direction and abuts on a cam surface. The gist of the invention is to provide a front cam displaced in the same rotation axis direction, and cam contact means for contacting the magnet support member with a cam surface of the front cam.

According to the invention described in claim 3, according to claim 2
In addition to the effect of the invention described in the above, when the front cam is rotated, the magnet supporting means abutting on the cam surface moves in the rotation axis direction, and the second magnet moves without rotating. Therefore, for example, when the second magnet is moved by the feed screw mechanism,
The position of the first or second magnet is adjusted with a simple configuration.
For this reason, the number of parts and the number of assembly steps can be prevented from further increasing.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the cam abutting means is rotatable about the rotation axis integrally with the front cam and in the same rotation axis direction. Displaceably supported, a cam surface abuts against the magnet support member from the side opposite to the front cam in the rotation axis direction,
The gist of the present invention is that the magnet support member is a sub-front cam that abuts against a cam surface of the front cam.

According to the invention set forth in claim 4, according to claim 3,
In addition to the operation of the invention described in (1), the position of the magnet support member is adjusted by the front cam and the sub-front cam rotating integrally with the front cam. Therefore, the position of the first or second magnet is adjusted with a simpler configuration than when the magnet support member is brought into contact with the cam surface of the front cam by, for example, a spring mechanism. For this reason, the number of parts and the number of assembly steps can be prevented from further increasing.

According to a fifth aspect of the present invention, there is provided a metal rotating plate rotatably supported and driven to rotate by the movement of a motioner, and the rotating plate is coaxially arranged on one side in the rotation axis direction. An exercise apparatus comprising: a first magnet arranged in an annular shape having a central axis thereof; and a second magnet arranged in an annular shape having a coaxial central axis on the other side in the rotational axis direction with respect to the rotating plate. In the exercise load generator of the above, the rotating plate,
It consists of a single rotating veneer or a plurality of laminated rotating veneers, and the number of the rotating veneers is adjustable.

According to the fifth aspect of the present invention, the magnitude of the anti-torque applied to the rotating plate changes greatly without adjusting the positional relationship between the first and second magnets with respect to the rotating plate. For this reason, the magnitude of the exercise load can be adjusted in a wider range.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention embodied in an exercise apparatus capable of performing a pedaling exercise using an actual bicycle will be described below with reference to FIGS.

As shown in FIG. 2, the exercise equipment 10 supports the rear wheel hub H of the bicycle B to support the bicycle B, and the rear wheel R which is rotationally driven by the exerciser pedaling the pedal P. The exercise load is to be given. The exercise apparatus 10 includes a support stand 11 and an exercise load applying device 1.
2 is provided.

The support stand 11 has a frame 13 and a hub support mechanism 14. The frame 13 supports a hub support mechanism 14, and the hub support mechanism 14 rotatably and detachably supports the rear wheel hub H of the bicycle. Frame 1
3 supports the bicycle via the hub support mechanism 14 so that the exerciser can perform a pedaling exercise.

The exercise load applying device 12 includes an exercise load generating device 15 and an urging mechanism (not shown). The exercise load generator 15 applies an anti-torque whose magnitude can be adjusted to the rear wheel R, which is pressed against the rear wheel R of the bicycle supported by the support stand 11 and is driven to rotate, as an exercise load. The urging mechanism presses the exercise load generator 15 against the tire of the rear wheel R by the urging force of the compression coil spring.

The exercise load generator 15 includes a fixed portion 17 supported by the urging mechanism, and a roller 18 rotatably supported by the fixed portion 17. The fixing part 17 is a roller 1
8 is provided with a substantially columnar first base 19 and a second base 20 arranged on both sides in the direction of the rotation axis. First
The base 19 and the second base 20 are connected and fixed to each other by a connecting portion 21 provided on an outer peripheral portion of the roller 18.

As shown in FIG. 1, the first base 19 includes an inner case 22 and an outer case 23, and one end of a rotating shaft 24 on which the roller 18 is fitted is rotated by a bearing 25 fixed to the inner case 22. Supported as possible. A flywheel 26 is fixed to one end of the rotating shaft 24 in a room formed by the two cases 22 and 23.

The second base 20 has an inner case 27 and an outer case 28, and the other end of the rotating shaft 24 is rotatably supported by a bearing 29 fixed to the inner case 27. At the other end of the rotating shaft 24, both cases 27, 28
The boss 31 is fixed in the room formed by the above.
The boss 31 has a flange 32, and a rotary plate 35 is fitted to a small diameter portion 33 provided outside the flange 32 via a washer 34. The rotating plate 35 is formed by laminating the same two rotating veneers 36, and has a nut 37 screwed into a male screw portion 24 a provided at the other end of the rotating shaft 24.
As a result, it is sandwiched between the flange 32 and two washers 38. Therefore, the rotating plate 35 can be made only one rotating veneer 36 by removing the outer rotating veneer 36.

The outer case 28 is provided with a hole 28a having the rotation axis of the rotation shaft 24 as a center axis.
A substantially cylindrical adjusting knob 39 having a bottom is rotatably supported by a. An annular support plate 40 is fixed inside the adjustment knob 39 so as to rotate integrally with the adjustment knob 39. Between the adjustment knob 39 and the support plate 40, a pair of thrust bearings 41 arranged so as to sandwich the outer case 28 in the rotation axis direction are sandwiched. Thrust bearing 41
Supports the adjustment knob 39 and the support plate 40 so as to be immovable in the direction of the rotation axis and rotatable about the rotation axis.

A positioning mechanism 42 is provided between the adjustment knob 39 and the outer case 28. The positioning mechanism 42 includes a ball 43 and a compression coil spring 44 provided on the adjustment knob 39 side, and the outer surface 28 of the outer case 28.
b, seven recesses (only one is shown in FIG. 1) 4
5

As shown in FIG. 3, the recesses 45 are provided at intervals of 10 ° within an angle range of 60 ° on the same circumference centered on the rotation axis. Then, the positioning mechanism 42 uses the compression coil spring 44 to
By positioning the adjustment knob 39 at a position where the ball 43 biasing to the side enters one of the concave portions 45, the support plate 40
Are positioned at seven adjustment positions within an angle range of 60 °.

Further, as shown in FIG.
On the outer side surface 28b, seven scales 46 corresponding to the adjustment position of the adjustment knob 39 are provided on the outer peripheral side of the adjustment knob 39.
“L”, “2”, “3”, “4”, “5”, “6”, and “H” are provided at 10 ° intervals within a 60 ° angle range. Each scale 46 is provided at a position where the positioning mechanism 42 positions the adjustment knob 39 at the corresponding adjustment position when the indicator 39 a provided on the adjustment knob 39 is adjusted to one of the scales 46.

As shown in FIG. 1, the support plate 40 includes
An annular first magnet 47 having a rotation axis as a center axis is fixed to a side surface facing the rotation plate 35. FIG.
As shown in (a), the first magnet 47 is divided into a plurality of fan-shaped magnetized regions 47a and 47b having an angle range of 60 ° about the center axis. Each magnetized area 47
The magnets a and 47b are magnetized in the direction of the central axis, and are magnetized so that the magnetization directions of the magnets adjacent to each other in the circumferential direction are opposite to each other.

The angle range of 60 ° in which the adjustment knob 39 is adjusted corresponds to the magnetization regions 47 a and 47 of the first magnet 47.
The angle b is set so as to correspond to the formed angle range of 60 °. Therefore, the first magnet 47 is
With the adjustment of 9, the magnetized regions 47a and 47b are relatively rotated by 60 ° corresponding to the angular range.

As shown in FIG. 1, on the roller 18 side of the rotating plate 35, an annular second magnet 48 having the boss 31 inserted is provided so as to face the rotating plate 35 in the direction of the rotation axis. Have been. The second magnet 48 is supported by a magnet moving mechanism 49 as distance adjusting means provided on the roller 18 side of the rotating plate 35. As shown in FIG. 4B, the second magnet 48 has the same configuration as the first magnet 47, and has a plurality of fan-shaped magnetized regions 48a and 48b having an angle range of 60 ° about the center axis. Each of the magnetized regions 48a and 48b is magnetized in the direction of the rotation axis so that the directions of magnetization are mutually opposite between circumferentially adjacent ones. The magnetization direction of the magnetization region 48a is the same as that of the magnetization region 47a, and the magnetization direction of the magnetization region 48b is the same as that of the magnetization region 47b.

As shown in FIG. 1, the magnet moving mechanism 49
The second magnet 48 is supported so as not to rotate around the rotation axis and to be displaceable in the rotation axis direction. When the index portion 39 a of the adjustment knob 39 is set to “H” of the scale 46, the second magnet 48 causes the respective magnetized regions 48 a and 48 b to move relative to the respective magnetized regions 47 a and 47 b of the first magnet 47. It is positioned in the rotation direction so as to completely overlap when viewed in the direction of the rotation axis.

The magnet moving mechanism 49 includes the first front cam member 5
0, a second front cam member 51 and a magnet support member 52. In the present embodiment, the first front cam member 50 as the front cam, the second front cam member 51 as the cam abutting means and the sub front cam, and the magnet support member 52 constitute the distance adjusting means.

As shown in FIGS. 5A and 5B, the first front cam member 50 is formed in a substantially cylindrical shape with a bottom as shown in FIGS. A hole 50a is formed at the center of the bottom, and three radially extending ribs 54 are formed at equal angular intervals on an inner side surface 53a as a cam surface of the peripheral portion 53. Each rib 54 has a substantially semicircular cross section perpendicular to its extending direction. In addition, on the peripheral end of the peripheral wall portion 55, three concave portions 55a are formed at equal angular intervals.

The second front cam member 51 is formed of a synthetic resin, and as shown in FIGS. 6 (a) and 6 (b), extends substantially in the shape of a cylinder having a bottom and a radially extending main body 56. Operating lever 57 is provided integrally. A hole 56a is formed at the bottom of the main body 56, and three radially extending ribs 59 are formed at equal angular intervals on an inner side surface 58a as a cam surface of a peripheral edge portion 58 thereof. Each of the ribs 59 has a cross section orthogonal to the extension direction formed in a substantially semicircular shape having the same outer diameter as the rib 54. In addition, on the peripheral end of the peripheral wall part 60,
3 that engages with each recess 55a of the first front cam member 50
The two convex portions 60a are formed at equal angular intervals.

The first front cam member 50 and the second front cam member 51 are united so as to be integrally rotatable by engaging the respective convex portions 60a with the respective concave portions 55a. At this time, as shown in FIGS. 7 and 8, each rib 54 of the first front cam member 50 and each rib 59 of the second front cam member 51 are
They are arranged at 60 ° intervals about a common central axis.
The combined front cam members 50 and 51 are shown in FIG.
As shown in FIG.
Inside, it is rotatably supported around a coaxial line with its central axis coinciding with the central axis of the rotating shaft 24. The movement of the front cam members 50 and 51 in the axial direction is restricted by an annular fixing plate 61 fixed to the opening side of the concave portion 27a. Further, the operation lever 57 is
An opening 27b provided in the peripheral wall of the inner case 27 (see FIG. 4)
(Illustrated in (b), 7, and 8). The opening 27b is provided between the front cam members 50 and 51.
Is formed in an angle range in which is rotated by 20 ° about the rotation axis.

The magnet support member 52 is formed of a synthetic resin.
As shown in FIGS. 9 (a) and 9 (b) and FIGS. 10 (a) and 10 (b), it is formed in a two-stage cylindrical shape including a large diameter portion 62 and a small diameter portion 63. The outer diameter of the large-diameter portion 62 is slightly smaller than the inner diameter of each of the peripheral wall portions 55 and 60 of the front cam members 50 and 51. The outer diameter of the small diameter portion 63 is formed to a size that fits into the hole 56 a of the second front cam member 51.

As shown in FIGS. 9A and 9B, three grooves 64 extending in the radial direction with respect to the center axis thereof are formed on the outer surface 62a of the large diameter portion 62 at 120 ° intervals. .
Each groove 64 is formed in a substantially semicircular shape having a cross section orthogonal to the extension direction and an inner diameter larger than the outer diameter of each rib 54.

As shown in FIGS. 10 (a) and 10 (b), three grooves 65 extending in the radial direction with respect to the center axis thereof are formed in the inner surface 62c of the peripheral portion 62b of the large diameter portion 62.
° formed at intervals. Each groove 65 has a substantially semi-circular cross section perpendicular to the direction in which it extends, having the same inner diameter as each of the grooves 64. In addition, each groove 65 has an outer surface 62a.
In FIG. 10A, each groove 64 is provided at a position shifted by 35 degrees clockwise about the central axis. Further, on the outer peripheral surface 63a of the small diameter portion 63,
Three semicircular concave portions 66 are formed at 120 ° intervals.

As shown in FIG. 1, the magnet supporting member 52 has a peripheral portion 62b of the large diameter portion 62 disposed in an annular peripheral groove formed by the front cam members 50 and 51. The boss 31 is supported so as to be movable in the rotation axis direction with the boss 31 inserted. Further, the magnet supporting member 52 includes three projecting pieces 61 a (shown in FIG. 7) provided at equal angular intervals on the inner peripheral end of the fixed plate 61 in each concave portion 66 provided on the outer peripheral surface 63 a of the small diameter portion 63. By engaging
Movement in the direction of the rotation axis is permitted, and rotation about the rotation axis is restricted.

As shown in FIG. 7, the front cam members 50 and 51 are connected to one end (hereinafter, referred to as one end) of a rotation range of the operation lever 57.
When operated to the strong position S), each rib 54 of the first front cam member 50 is
2 and the second front cam member 51
Are arranged at positions overlapping the respective grooves 65 in the same direction. At this time, as shown in FIG. 11, the magnet support member 52 is arranged at a position closest to the rotary plate 35 side in the rotation axis direction by the two front cam members 50 and 51. That is, the magnet support member 52 is provided on the outer surface 62 a of the large-diameter portion 62.
The ribs 54 of the first front cam member 50 abut against each other, and
The inner surface 62c of the peripheral portion 62b is positioned in the rotation axis direction with the inner surface 62c abutting against the inner surface 58a of the peripheral portion 58 of the second front cam member 51.

Further, both front cam members 50 and 51 are formed as shown in FIG.
As shown in FIG. 5, when the operation lever 57 is operated to the other end of the rotation range (hereinafter, referred to as a weak position W), each rib 54 of the first front cam member 50 overlaps each groove 64 in the rotation axis direction. Further, each rib 59 of the second front cam member 51 is arranged at a position not overlapping each groove 65 in the same direction. At this time, as shown in FIG. 1, the magnet support member 52 is disposed at a position farthest from the rotary plate 35 side in the direction of the rotation axis by the two front cam members 50 and 51. That is, the magnet support member 52 is configured such that the outer surface 62a of the large diameter portion 62 abuts on the inner surface 53a of the peripheral portion 53 and the inner surface 6a of the peripheral portion 62b.
Each rib 59 of the second front cam member 51 is positioned in the rotation axis direction in a state in which the rib 59 abuts on 2c.

That is, both front cam members 50 and 51 are
The peripheral portion 6 of the magnet support member 52 is formed on each of the inner side surfaces 53a and 58a.
A positive cam (Positiv) that displaces the magnet support member 52 in the rotation axis direction while the position of the magnet support member 2b is constantly regulated in the rotation axis direction.
e Cam).

As shown in FIG. 1, an annular support plate 67 is fixed to the magnet support member 52 at the peripheral end of the small diameter portion 63. The second magnet 48 is fixed to the support plate 67. The second magnet 48 is provided with a magnet moving mechanism 49.
Accordingly, when the operation lever 57 is switched to the strong position S, as shown in FIG. 11, the operation lever 57 is disposed at a position closest to the rotating plate 35 (hereinafter, referred to as a close position). Also,
When the operation lever 57 is switched to the weak position W, as shown in FIG.
(Referred to as a separated position). The distance between the second magnet 48 and the rotating plate 35 when approaching the rotating plate 35 most is equal to the distance between the rotating plate 82 and the fixed permanent magnet 84 in the conventional resistance applying device.

Next, the operation of the exercise load generating device for the exercise apparatus configured as described above will be described. When the operation lever 57 is switched to the strong position S, as shown in FIG.
The second magnet 48 is arranged at a position closest to the rotating plate 35. In this state, when the index portion 39a of the adjustment knob 39 is set to “H” of the scale 46, the respective magnetized regions 47a and 47b of the first magnet 47 become the respective magnetized regions 48a and 48b of which the second magnet 48 has the same magnetization direction. Are arranged at positions completely overlapping with each other when viewed in the rotation axis direction. In this state, when the exerciser performs a pedaling exercise on the bicycle B, the rotating rotating plate 35 is rotated.
The largest eddy current is generated, and the largest counter torque is applied to the rotating plate 35. Therefore, the strongest exercise load is given to the pedaling exercise.

With the operation lever 57 in the strong position S,
When the indicator 39a of the adjustment knob 39 is adjusted from "H" of the scale 46 to "5", "4", "3", and "2", the second magnet 48 is kept at the close position, 1
The area in which the magnetized regions 47a and 47b of the magnet 47 overlap the magnetized regions 48a and 48b in which the magnetization direction of the second magnet 48 is the same as viewed in the direction of the rotation axis gradually decreases. And
The smaller the number on the scale 46, the smaller the magnitude of the eddy current generated in the rotating plate 35 becomes.
The anti-torque applied to is gradually reduced. For this reason, the exercise load given to the pedaling exercise gradually decreases.

When the index portion 39a of the adjustment knob 39 is set to "L" of the scale 46, each magnetized region 47 of the first magnet 47 is kept with the second magnet 48 being arranged at the close position.
a, 47b are magnetized regions 4 in which the magnetization directions of the second magnets 48 are the same.
8a and 48b do not completely overlap when viewed in the direction of the rotation axis. Then, the magnitude of the eddy current generated in the rotating plate 35 becomes the smallest, and the magnitude of the counter torque applied to the rotating plate 35 becomes the smallest. Therefore, the exercise load given to the pedaling exercise is minimized.

Therefore, when the operation lever 57 is set to the strong position S, the pedaling motion is applied in a range from the strongest exercise load that can be generated by the exercise load generator 15 to a somewhat weaker exercise load. Exercise load is adjusted. The range of exercise load obtained at this time is
This is equivalent to the range of the exercise load obtained in the conventional resistance applying device.

Next, when the operation lever 57 is switched to the weak position W, as shown in FIG.
At the farthest position away from the In this state, when the index portion 39a of the adjustment knob 39 is adjusted in the range from "H" to "L" of the scale 46, the adjustment position of the index portion 39a with respect to the scale 46 is higher than when the operation lever 57 is in the strong position. Are the same, the magnitude of the anti-torque generated in the rotating plate 35 is small. This is because the two magnetized regions 47a, 48a, 47 that are overlapped by the two magnets 47, 48 when viewed in the direction of the rotation axis by the amount of the second magnet 48 separated from the first magnet 47.
b, 48b, the magnetic flux generated between the rotating plates 35
This is because the eddy current generated in the rotating plate 35 decreases, and the counter torque applied to the rotating plate 35 decreases.

Therefore, when the operating lever 57 is in the weak position W, the exercise load given to the pedaling exercise is adjusted in the exercise load adjustment range that is weaker than the exercise load adjustment range in the strong position S. You. For this reason, the range of the exercise load generated by the exercise load generation device 15 is smaller than the range of the exercise load that can be generated conventionally, which is smaller than the case where the magnet moving mechanism 49 is not provided. The adjustment range will be expanded.

Further, as shown in FIG.
When the operation lever 57 is set to the weak position W with the outer one of the two rotating veneers 36 forming the rotary veneer 36 being removed, the anti-torque generated in the rotating plate 35 in the adjustment range of the adjustment knob 39 is reduced. The size becomes smaller even when the adjustment position of the adjustment knob 39 is the same, as compared with the case where the rotary plate 35 is configured by the two rotary single plates 36. This is because the reduction in the thickness of the rotating plate 35 reduces the magnitude of the eddy current generated in the rotating plate 35, and further reduces the counter torque applied to the rotating plate 35.

Therefore, the rotating plate 35 is replaced with one rotating veneer 36.
When the operating lever 57 is in the weak position W only as
Rather than when the rotating plate 35 is composed of two rotating veneers 36,
The adjustment range is extended to a lower range of exercise load.

According to this embodiment described in detail above, the following effects can be obtained. (1) The second magnet 48 is moved by the magnet moving mechanism 49
The position is switched from the near position close to the rotating plate 35 in the rotation axis direction to the separated position.

Therefore, as compared with the case where the exercise load is weakly adjusted only by relatively rotating and displacing the first magnet 47 by the adjustment knob 399 while the second magnet 48 is supported at the close position, the exercise load of the weaker exercise load is reduced. The adjustment range is extended to the range. For this reason, the intensity of the exercise load applied to the pedaling exercise can be adjusted in a wider range.

(2) Since the distance between the rotary plate 35 and the second magnet 48 is adjusted by adjusting the position of the second magnet 48 while the rotary plate 35 is fixed, the rotary plate 35 driven to rotate is rotated.
By adjusting the position, the configuration is simplified as compared with a configuration in which the distance between the magnets 47 and 48 is adjusted. Therefore, the number of parts and the number of assembling steps can be prevented from increasing as much as possible.

(3) The second magnet 48 is supported so as to be displaceable in the rotation axis direction, and is displaced by the first front cam member 50 and the second front cam member 51. Therefore, the second magnet 48 can be displaced by a simple mechanism without rotating the second magnet 48 about the rotation axis, so that the number of parts and the number of assembling steps can be prevented from further increasing.

(4) The supporting member 2 for supporting the second magnet 48 is replaced by a first front cam member 50 and a second front cam member 51.
The displacement cam is displaced in the direction of the rotation axis by the positive cam constituted by the above.

Therefore, without providing the second front cam member 51,
For example, the support member 2 is connected to the first front cam member 5 by a spring member interposed between the fixed plate 61 and the magnet support member 52.
The configuration is simpler than the configuration of contacting the cam surface with zero. For this reason, the number of parts and the number of assembly steps can be prevented from further increasing.

(5) The rotating plate 35 is replaced with one rotating veneer 3
6 or a plurality of stacked rotating veneers 36 so that the number of rotating veneers 36 can be adjusted.
Therefore, the magnitude of the anti-torque applied to the rotating plate 35 changes greatly without adjusting the positional relationship between the first magnet 47 and the second magnet 48 with respect to the rotating plate 35. For this reason, the magnitude of the exercise load can be adjusted in a wider range.

Next, embodiments other than the above-described embodiment will be described in a bulleted list. In the above embodiment, the cam contact means is, for example, the fixed plate 6
It may be a spring member interposed between the magnet support member 1 and the magnet support member 52.

In the above embodiment, the position of the second magnet 48 may be adjusted in a plurality of steps between the closest position closest to the rotating plate 35 and the farthest separated position. As such a configuration, for example, a detent mechanism for positioning the operation lever 57 in a plurality of steps within the rotation range may be provided. Further, the position of the second magnet 48 is
The position may be continuously and continuously adjusted between the close position and the separated position.

In the above embodiment, the distance adjusting means may be constituted by a feed screw mechanism. With this configuration, the second
By adjusting the position of the magnet 48, the distance from the rotating plate 35 can be adjusted.

In the above embodiment, by adjusting the position of the first magnet 47 in the rotation axis direction in addition to the second magnet 48, the distance between the two magnets 47, 48 and the rotating plate 35 is adjusted, and the exercise load is adjusted. May be adjusted.

Further, the position of the second magnet 48 is fixed,
By adjusting only the position of the magnet 47, the distance between the first magnet 47 and the rotating plate 35 may be adjusted, and the magnitude of the exercise load may be adjusted.

In the above embodiment, the first magnet and the second magnet are a plurality of magnets provided on the same circumference centered on the rotation axis so that the directions of magnetization are adjacent to each other and opposite to each other. It may be.

The exercise load generator is disclosed in
It may be in the form of a resistance imparting device provided in a bicycle exercise device disclosed in Japanese Patent No. 24137. The exercise device is not limited to an exercise device that performs pedaling exercise using an actual bicycle, and may be an exercise device in which a saddle, a handle, and a pedal are provided on a frame to perform pedaling exercise.

The exercise equipment provided with the exercise load generating device is not limited to the exercise equipment performing pedaling exercise of the bicycle.
In addition, any exercise equipment may be used as long as it can perform exercise capable of converting the exercise of the exerciser into the rotational movement of the rotating plate of the exercise load generator. For example, it may be an exercise device that rotates the handle to recover the function of the arm.

Hereinafter, the technical ideas grasped from each of the above embodiments will be described together with their effects. (1) An exercise device comprising the exercise load generation device for an exercise device according to any one of claims 1 to 5, wherein the exercise load is applied to a pedaling exercise. According to such a configuration, the magnitude of the exercise load applied to the pedaling exercise can be adjusted in a wider range.

(2) In the invention according to any one of claims 1 to 5, a rotational position adjusting means (adjustment) for rotating one of the first magnet and the second magnet relative to the other. An exercise load generating device for exercise equipment, comprising a knob 39 and a positioning mechanism 42). According to such a configuration, the exercise load can be further weakly adjusted in a state where the distance between the rotating plate and at least one of the first magnet and the second magnet is adjusted to the farthest position.

[0071]

According to the first to fifth aspects of the present invention, the magnitude of the generated exercise load can be adjusted in a wider range.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an exercise load generator.

FIG. 2 is a schematic perspective view showing a use state of the exercise equipment.

FIG. 3 is a front view showing an adjustment knob and a position scale.

FIG. 4A is a front view showing a first magnet, and FIG.
FIG. 3 is a front view showing a second magnet.

FIG. 5A is a front view of a first front cam member, and FIG.
2 is a sectional view taken along line AA in FIG.

FIG. 6A is a front view of a second front cam member, and FIG.
3A is a cross-sectional view taken along line BB in FIG.

FIG. 7 is a front view in which a part of the magnet moving mechanism is sectioned.

FIG. 8 is a front view in which a part is similarly sectioned.

9A is a front view of a magnet support member, and FIG. 9B is a cross-sectional view taken along line CC in FIG. 9A.

10A is a front view of a magnet supporting member, and FIG. 10B is a cross-sectional view taken along line DD in FIG.

FIG. 11 is a schematic sectional view showing a main part of the exercise load generating device.

FIG. 12 is a schematic sectional view of the same.

FIG. 13 is a schematic sectional view showing a conventional resistance applying device.

[Explanation of symbols]

10 exercise equipment, 15 exercise load generator, 35 rotating plate, 36 rotating single plate, 47 first magnet, 48 second magnet, 49 magnet moving mechanism as distance adjusting means, 50
A first front cam member as a front cam constituting the distance adjusting means, 51... A cam contacting means constituting the distance adjusting means and a second front cam member as a sub-front cam, 52... A magnet support constituting the distance adjusting means Member, 53a: inner surface as cam surface, 58a: inner surface as cam surface.

Claims (5)

[Claims] 1. A metal rotating plate rotatably supported and driven to rotate by the motion of an exerciser; a first magnet disposed on one side of the rotating plate in a direction of a rotation axis thereof; A motion addition generating device for an exercise machine, comprising: a second magnet disposed on the other side in the rotation axis direction with respect to the rotating plate; at least one of the first magnet and the second magnet; the rotating plate; An exercise load generating apparatus for an exercise apparatus, further comprising a distance adjusting means for adjusting a distance in the rotation axis direction. 2. The apparatus according to claim 1, wherein the distance adjusting means adjusts the position of the first magnet or the second magnet with respect to the rotating plate in the direction of the rotation axis.
An exercise load generating device for an exercise apparatus according to item 1. 3. A magnet supporting member that is supported movably in the direction of the rotation axis and non-rotatably about the rotation axis, and that supports the first magnet or the second magnet, A front cam that is rotatable about the rotation axis, and is displaceable in the rotation axis direction, and displaces the magnet support member in contact with a cam surface in the rotation axis direction; The exercise load generating device for an exercise apparatus according to claim 2, further comprising: a cam contact means for contacting a cam surface of the front cam. 4. The cam contact means is supported integrally with the front cam so as to be rotatable around the rotation axis and not to be displaceable in the rotation axis direction, and is opposite to the front cam in the rotation axis direction. The exercise load of the exercise equipment according to claim 3, wherein the auxiliary equipment is a sub-front cam which abuts a cam surface against the magnet support member from a side and abuts the magnet support member against a cam surface of the front cam. Generator. 5. A metal rotatable plate rotatably supported and rotatably driven by the motion of an athlete; an annular member having a coaxial center axis on one side of the rotatable plate in the direction of the rotation axis thereof. In the exercise load generating device of the exercise equipment, the first magnet disposed and the second plate disposed in an annular shape having a coaxial center axis on the other side in the rotation axis direction with respect to the rotation plate. The rotating plate is composed of a single rotating veneer or a plurality of stacked rotating veneers, and the number of the rotating veneers is adjustable. .