JP2007050194A - Resisting device for exercise machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resisting device providing load by a resisting fluid such as an oil during the rotational exercise by human power in various kinds of exercise machines. <P>SOLUTION: The exercise machine is equipped with a body case having a resisting chamber in which the oil is sealed and a rotary resistor 17 supported in the resisting chamber in the body case. A plurality of convex faces 22a having a large radius R22 and a plurality of concave faces 22b having a small radius to with respect a rotary center axis 7a are arranged alternately in a rotary direction X in an outer peripheral face 22 of the rotary resistor 17. A concave 24 making a radius S28 with respect to the rotary center axis 7a large is arranged in an inner peripheral face 23 of the body case when the outer peripheral face 22 of the rotary resistor 17 moves facing the inner peripheral face 23 of the body case as the rotation of the rotary resistor 17 capable of rotating by the human power. A resist adjuster 31 is movably arranged so as to be able to adjust the position of the resist adjuster 31 interposed between the outer peripheral face 22 of the rotary resistor 17 and the inner peripheral concave face 28 of the concave 24 in the rotational direction X in a range between both the ends 28a, 28b of the rotational direction X in the concave 24. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a resistance device that applies a load with a resistance fluid such as oil during a rotary motion by human power in various exercise equipment.

  Conventionally, in this type of resistance device for exercise equipment, a rotation resistor is supported in a resistance chamber filled with oil, and when the rotation resistor is rotated by human power, when the rotation resistor collides with oil, The reaction force generated in the load gives a load to the rotating resistor.

  However, since the entire inner peripheral surface of the outer wall having the resistance chamber is formed in a circular shape and the outer peripheral surface of the rotating resistor moves to face the inner peripheral surface of the outer wall, a load or a load change is applied to the rotating resistor. It becomes difficult, and the user always feels a constant load while the rotation resistor rotates.

  It is an object of the present invention to easily apply a load or a load change to the rotating resistor and to change the user's sense of load as compared to a case where the user feels a constant load during the rotation of the rotating resistor. It is said.

Reference numerals in the drawings of the following embodiments (the first embodiment shown in FIGS. 1 to 6, the second embodiment shown in FIGS. 7A and 8 and the third embodiment shown in FIGS. 7B and 9) The present invention is described with reference.
The resistance device 1 for exercise equipment according to the invention of claim 1 is configured as follows.

  The resistance device 1 includes an outer wall 11 having a resistance chamber 16 enclosing a resistance fluid, and a rotation resistor 17 supported by the resistance chamber 16 in the outer wall 11, and the rotation resistor 17 that can be rotated by human power. When the outer peripheral surface 22 of the rotational resistor 17 moves so as to face the inner peripheral surface 23 of the outer wall 11, the rotation center line of the rotational resistor 17 is placed on the inner peripheral surface 23 of the outer wall 11. A recess 24 for increasing the radius R24 with respect to 7a is provided. In addition to providing one recess 24 as in the embodiment described later, a plurality of recesses 24 may be arranged in the rotation direction X. In that case, it is preferable to dispose the recesses 24 asymmetrically rather than symmetrically. In addition, it is preferable to enclose the resistance fluid in the resistance chamber 16 with a space without filling the resistance fluid. In the embodiment described later, the rotation resistor 17 rotates only on one side of both sides in the rotation direction X. However, the rotation resistor 17 may be rotated on both sides in the rotation direction X.

  According to the first aspect of the present invention, not only can the load be easily applied to the rotating resistor 17 but also the outer peripheral surface of the rotating resistor 17 by a simple configuration in which the recess 24 is provided on the inner peripheral surface 23 of the outer wall 11. A load change is generated according to the positional relationship between the recess 22 and the recess 24, and the load can be easily changed only by changing the form of the recess 24 (distance S28, circumferential angle α, radius R24). be able to.

  In the invention of claim 2 premised on the invention of claim 1, an inner peripheral circular arc surface 26 along the maximum radius circular locus surface 25 drawn by the outer peripheral surface 22 of the rotation resistor 17 is formed on the inner peripheral surface 23 of the outer wall 11. Is provided with an outer peripheral passage 27 in the outer peripheral surface 22 of the rotational resistor 17, and the recess 24 has a maximum radius circular path 25 with respect to the maximum radius circular path 25 rather than a distance S 26 of the inner circular arc surface 26 with respect to the maximum radius circular path 25. An inner peripheral concave surface 28 for increasing the distance S28 is provided with a wide passage 29 with respect to the outer peripheral surface 22 of the rotation resistor 17, and the wide passage 29 and the outer peripheral passage 27 are communicated with each other. According to the second aspect of the present invention, the load of the rotating resistor 17 can be easily changed only by changing the volume of the spreading passage 29 facing the inner circumferential concave surface 28 of the recess 24 and the volume of the outer circumferential passage 27 facing the inner circumferential arc surface 26. Can be changed.

  In the invention of claim 3 premised on the invention of claim 2, the rotation resistor 17 includes one of an outer peripheral wall 20 having an outer peripheral surface 22 and both sides of the rotation resistor 17 in the direction of the rotation center line 7a. On the side, the outer peripheral wall 20 has an end face wall 19 and a recess 21 surrounded by the outer peripheral wall 20 and the end face wall 19, and the recess 21 has a rotational center line 7 a of the rotation resistor 17. The other side of the direction is opened on the other side and communicated with the outer peripheral passage 27 and the spreading passage 29 via the end face passage 30. In the invention of claim 3, with the rotation of the rotation resistor 17, the resistance fluid easily reaches the outer peripheral passage 27 and the spreading passage 29 through the end surface passage 30 and the recess 21 in the resistance chamber 16. The load can be easily changed.

  In the dent 24 according to the invention of claim 4 based on the invention of claim 2 or claim 3, the end portion 28a on the rotation direction XF side and the end portion 28b on the counter rotation direction XB side of the rotation direction X By means of the operating portions 38, 41, the position of the resistance adjusting body 31 interposed between the outer peripheral surface 22 of the rotational resistor 17 and the inner peripheral concave surface 28 of the recess 24 can be adjusted in the rotational direction X in the range between them. It is provided so that it can be moved.

  In the invention of claim 5 based on the invention of claim 4, the resistance adjusting body 31 is a range between the end portion 28a on the rotation direction XF side and the end portion 28b on the counter rotation direction XB side in the recess 24. And an open position Q where the outer peripheral surface 22 of the rotation resistor 17 and the inner peripheral concave surface 28 of the recess 24 face each other, and an end portion 28a on the rotation direction XF side and an end portion on the counter rotation direction XB side in the recess 24. A closing position P that is interposed between the outer peripheral surface 22 of the rotation resistor 17 and the inner peripheral concave surface 28 of the recess 24 in the entire range between the rotation resistor 17 and the end portion 28a on the rotational direction XF side in the recess 24; The outer periphery of the rotating resistor 17 is part of the entire range between the end portion 28b on the counter rotation direction XB side and the end portion 28b on the counter rotation direction XB side from the end portion 28a on the rotation direction XF side. The surface 22 and the concave inner surface 28 of the recess 24 are opposed to each other. Thereby it can take an intermediate position R. For example, the resistance adjuster 31 is biased by the elastic body 40 and takes the closed position P.

  In the inventions according to claims 4 to 5, the load of the rotational resistor 17 can be easily changed by the resistance adjuster 31.

  The present invention easily applies a load or a load change to the rotation resistor 17 and also changes the user's sense of load as compared to a case where the user feels a constant load during the rotation of the rotation resistor 17. Can do.

First, a resistance device for a bicycle exercise apparatus according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the resistance device 1 is attached to a bracket 4 installed to support a rear wheel 3 of a bicycle 2 by a cradle 5 shown in FIG. 2. As shown in FIG. 3, a roller 8 is supported between the bearings 6 so as to be able to rotate integrally with the rotating shaft 7 supported by the bearings 6 on the cradle 5. The rear wheel 3 of the bicycle 2 is applied to the roller 8. A flywheel 10 is supported on one end of the rotating shaft 7 so that the flywheel 10 can rotate integrally in a case 9 provided on the cradle 5. A load applying mechanism M is assembled on the other end side of both ends of the rotating shaft 7. Next, the load applying mechanism M will be described in detail.

  A body case 11 is attached to the cradle 5. The main body case 11 includes a bottom wall portion 12 and a peripheral wall 13. The rotating shaft 7 passes through an oil seal 14 fitted in the bottom wall portion 12 and protrudes inside the peripheral wall 13. A lid case 15 (outer wall) is attached to the open side of the peripheral wall 13 facing the bottom wall portion 12 in the main body case 11 (outer wall).

  In the resistance chamber 16 surrounded by the main body case 11 and the lid case 15, a rotating resistor 17 shown in FIG. 5A is supported by a boss portion 18 so as to be able to rotate integrally with the rotating shaft 7. Has been. As shown in FIGS. 4 (a) and 4 (b), this rotational resistor 17 has a boss portion on one side of both sides in the direction of the rotational center line of the rotational resistor 17 (the rotational center line 7a of the rotational shaft 7). An end wall 19 extending outward from 18, an outer peripheral wall 20 having an uneven outer peripheral surface 22, and a recess 21 surrounded by the outer peripheral wall 20 and the end surface wall 19 on the outer periphery of the boss portion 18. Yes. The end face wall 19 faces the bottom wall portion 12 of the main body case 11 and protrudes outside the outer peripheral wall 20 and has a circular outer peripheral edge 19a. On the outer peripheral surface 22 of the outer peripheral wall 20, a plurality of convex surfaces 22a having a large radius R22 and a plurality of concave surfaces 22b having a small radius R22 with respect to the rotation center line 7a of the rotation resistor 17 are opposite to the rotational direction X (the rotational direction XF and the rotational direction XF). (Directions including the direction XB) are alternately arranged at intervals of 90 degrees. The convex surfaces 22a are formed in the same form (same shape and size), and their radii R22 are set to be the same. The concave surfaces 22b are formed in the same form (the same shape and size), and their radii R22 are set to be the same.

  On the inner peripheral surface 23 of the peripheral wall 13 of the main body case 11 facing the outer peripheral surface 22 of the outer peripheral wall 20 of the rotation resistor 17, a recess 24 is formed to increase the radius R24 with respect to the rotation center line 7a. Has been. On the inner peripheral surface 23 of the peripheral wall 13, an inner peripheral circular arc surface 26 along the maximum radius circular locus surface 25 (circular surface on the outer peripheral edge 19a of the end surface wall 19) drawn by the convex surface 22a of the rotation resistor 17 is the end. An outer peripheral passage 27 is formed with respect to the outer peripheral edge 19 a of the face wall 19. The recess 24 is formed with an inner peripheral concave surface 28 which extends a distance S28 with respect to the outer peripheral edge 19a from the distance S26 of the inner peripheral circular arc surface 26 with respect to the outer peripheral edge 19a. ing. The inner peripheral concave surface 28 is continuous with the inner peripheral circular arc surface 26 at both end portions 28a and 28b on both sides in the rotational direction X, and the expanding passage 29 in the recess 24 is also connected to the outer peripheral passage 27 at both end portions 28a and 28b. Communicate. The circumferential angle α (about 110 degrees) formed by the inner circumferential concave surface 28 of the recess 24 between the two radial lines connecting the both end portions 28a, 28b and the rotation center line 7a of the rotational resistor 17 is the same as the above-mentioned radial lines. It is smaller than the circumferential angle β (about 250 degrees) formed by the inner circumferential arc surface 26. The recess 21 of the rotational resistor 17 is opened to the lid case 15 side, and is communicated with the outer peripheral passage 27 and the spreading passage 29 via the end face passage 30.

  A resistance adjustment body 31 shown in FIG. 5B is supported on the lid case 15 by a shaft portion 32 having the same rotation center line as the rotation center line 7 a of the rotation resistor 17. The resistance adjuster 31 includes a rotating plate 33 that is a circular end wall extending outward from the shaft portion 32, a cylindrical portion 34 formed on the rotating plate 33 on the opposite side to the shaft portion 32, and An opening / closing plate 35 having a circumferential wall formed at a circumferential angle γ (about 160 degrees) larger than the circumferential angle α of the inner circumferential concave surface 28 of the recess 24 in the entire outer circumferential range of the rotating plate 33. Yes. The rotating plate 33 faces the flat bearing 36 fitted in the lid case 15 in the end face passage 30 in the resistance chamber 16 in close proximity. The cylindrical portion 34 is inserted into the recess 21 of the rotational resistor 17 from the end face passage 30 in the resistance chamber 16, and the boss portion 18 of the rotational resistor 17 is inserted into the cylindrical portion 34. The opening / closing plate 35 is disposed along the outer peripheral edge 19 a of the end wall 19 of the rotation resistor 17 in the outer peripheral passage 27 and the spreading passage 29 in the resistance chamber 16. Between the inner circumferential concave surface 28 and the inner circumferential arc surface 26.

  A cap 37 is put on the outside of the lid case 15. An interlocking body 38 is attached to the shaft portion 32 so as to rotate integrally with the shaft portion 32 inside the cap 37, and the interlocking body 38 faces close to the flat bearing 39 fitted in the lid case 15. Yes. A torsion coil spring 40 is wound around the outer periphery of the interlocking body 38 inside the cap 37, and one end thereof is connected to the interlocking body 38 and the other end is connected to the lid case 15. Due to the elastic force of the torsion coil spring 40, the resistance adjusting body 31 is urged through the interlocking body 38, and the resistance adjusting body 31 is rotated so that the opening / closing plate 35 is in the closed position P shown in FIG. I take the. In the closed position P, the entire inner concave surface 28 of the recess 24 opens and closes in the entire range between the end portion 28a on the rotation direction XF side in the rotation direction X and the end portion 28b on the opposite direction XB side with respect to the rotation direction XF. A plate 35 is interposed between the outer peripheral surface 22 of the rotation resistor 17 and the inner peripheral concave surface 28 of the recess 14.

  As shown in FIG. 6, a wire 41 (opening / closing operation unit) that can be remotely operated is connected to the interlocking body 38 (opening / closing operation unit). When the wire 41 is pulled against the elastic force of the torsion coil spring 40, the resistance adjusting body 31 rotates and the opening / closing plate 35 rotates from the end 28a side to the end 28b side of the inner peripheral concave surface 28. 17 moves along the outer peripheral edge 19a of the end wall 19 and takes an intermediate position R and an open position Q. In the open position Q, the outer peripheral surface 22 of the rotary resistor 17 and the inner peripheral concave surface 28 of the recess 14 are opposed to each other in the entire inner concave surface 28 of the recess 24 between both end portions 28a, 28b. At the intermediate position R, the outer peripheral surface of the rotating resistor 17 is a part of the entire inner concave surface 28 of the recess 24 between the end portions 28a and 28b in the middle of the end portion 28a to the end portion 28b. The surface 22 and the inner peripheral concave surface 28 of the recess 24 face each other. When the wire 41 is released, it returns from the open position Q or the intermediate position R to the closed position P by the elastic force of the torsion coil spring 40.

  Oil is sealed as a resistance fluid in the resistance chamber 16 in which the rotation resistor 17 and the resistance adjuster 31 are accommodated. This oil is about 80% of the space volume remaining in the resistance chamber 16.

When the user sits on the bicycle 2 and rotates the rear wheel 3, the roller 8 rotates together with the rotating shaft 7, the flywheel 10, and the rotation resistor 17.
When the rotation resistor 17 rotates in the rotation direction XF with the resistance adjuster 31 in the closed position P as shown in FIG. 4A, the oil rotates with the rotation resistor 17 in the resistance chamber 16. At that time, the convex surface 22 a and the concave surface 22 b of the outer peripheral surface 22 of the rotation resistor 17 collide with the oil in the resistance chamber 16, and the oil spreads toward the opening / closing plate 35 and the inner peripheral circular arc surface 26 of the peripheral wall 13 by the collision force. The reaction force generated in the oil blocked by the opening / closing plate 35 and the inner circumferential arc surface 26 gives the rotation resistor 17 a predetermined rotation resistance.

  When the rotation resistor 17 rotates in the rotation direction XF with the resistance adjuster 31 in the open position Q as shown by the solid line in FIG. 4B, the convex surface 22a and the concave surface 22b of the outer peripheral surface 22 of the rotary resistor 17 are The oil collides with the oil in the resistance chamber 16, and the oil spreads not only to the opening / closing plate 35 and the inner peripheral circular arc surface 26 of the peripheral wall 13 but also to the inner peripheral concave surface 28 of the recess 24. When the oil flows into the spreading passage 29 in the recess 24, the oil is decelerated and the oil flow changes. Thereafter, the oil flow also changes when the oil flows from the expanding passage 29 in the recess 24 into the narrow outer peripheral passage 27. Along with such a change in the oil flow, the reaction force generated in the oil blocked by the opening / closing plate 35, the inner circumferential arc surface 26, and the inner circumferential concave surface 28 gives the rotational resistor 17 a predetermined rotational resistance. In the open position Q of the resistance adjuster 31, the oil enters the recess 24, and the reaction force generated in the oil increases due to an increase in the volume of the oil. The rotational resistance of the body 17 increases.

  When the resistance adjuster 31 is moved from the closed position P to the open position Q, the open / close plate 35 of the resistance adjuster 31 is gradually opened to open a part of the recess 24 as shown by the imaginary line in FIG. At the position R, the rotational resistance of the rotational resistor 17 varies depending on the opening degree of the recess 24, and gradually increases as the resistance adjuster 31 approaches the open position Q from the closed position P.

  Therefore, the user can easily adjust the stepless load of the bicycle 2. Further, when such a recess 24 functions at the open position Q or the intermediate position R of the resistance adjuster 31, the rotational resistance of the rotation resistor 17 changes abruptly according to the adjustment of the opening of the recess 24. Compared to the case where a certain load is felt, the user's sense of load can also be changed.

Next, a resistance device for a bicycle exercise apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 7A and 8 with a focus on differences from the first embodiment.
In this 2nd Embodiment, the form of the rotation resistor 17 is changed compared with 1st Embodiment. The outer peripheral wall 20 is formed in a circular shape along the outer peripheral edge 19 a of the end face wall 19. The outer peripheral surface 22 and the inner peripheral surface 42 of the outer peripheral wall 20 are smooth circular surfaces centering on the rotation center line 7 a of the rotation resistor 17. The maximum radius circular locus surface 25 is a circular surface on the outer peripheral surface 22. In the recess 21, a circular inner peripheral wall 43 is formed from the end face wall 19 along the outer peripheral wall 20 between the cylindrical portion 34 of the resistance adjusting body 31 and the outer peripheral wall 20. The outer peripheral surface 44 of the inner peripheral wall 43 is a smooth circular surface centered on the rotation center line 7 a of the rotation resistor 17. An inner peripheral passage 45 extending in the rotational direction X is formed between the inner peripheral surface 42 of the outer peripheral wall 20 and the outer peripheral surface 44 of the inner peripheral wall 43 so as to communicate with the end surface passage 30. Even if the outer peripheral surface 22 of the outer peripheral wall 20 is a circular surface, due to the frictional resistance between the outer peripheral surface 22 and the oil, as in the first embodiment, a change in the flow of the oil occurs, and the rotational resistor 17 has a predetermined value. The rotation resistance is given. Further, in the inner peripheral passage 45, the frictional resistance with oil is increased by the inner peripheral surface 42 of the outer peripheral wall 20 and the outer peripheral surface 44 of the inner peripheral wall 43, so that the load of the rotation resistor 17 can be increased.

Next, a resistance device for a bicycle exercise apparatus according to a third embodiment of the present invention will be described with reference to FIGS. 7B and 9 with a focus on differences from the first embodiment.
In this 3rd Embodiment, the form of the rotation resistor 17 is changed compared with 1st Embodiment. The outer peripheral wall 20 is formed in a circular shape along the outer peripheral edge 19 a of the end face wall 19. On the outer peripheral surface 22 of the outer peripheral wall 20, a plurality (three) of convex portions 46 and a plurality of (two) concave portions 47 extending in the rotation direction X are alternately arranged in the direction of the rotation center line 7 a of the rotation resistor 17. Are installed side by side. The outer peripheral surface 22 of each convex portion 46 and the outer peripheral surface 22 of each concave portion 47 are smooth circular surfaces centered on the rotation center line 7 a of the rotation resistor 17. The maximum radius circular locus surface 25 is a circular surface on the outer peripheral surface 22 of each convex portion 46. Due to the frictional resistance between the outer peripheral surface 22 of the outer peripheral wall 20 and the oil, not only does the flow change in the oil and a predetermined rotational resistance is given to the rotational resistor 17 as in the first embodiment, Since the outer peripheral surface 22 of the wall 20 has the convex part 46 and the recessed part 47, the frictional resistance with oil increases and the load of the rotation resistor 17 can be increased.

You may comprise as follows other than the said 1st-3rd embodiment.
* In the second embodiment, the inner peripheral wall 43 is omitted.
* In the second embodiment, the outer peripheral surface 22 and the inner peripheral surface 42 of the outer peripheral wall 20 and the outer peripheral surface 44 of the inner peripheral wall 43 are provided with uneven rotation resistance surfaces.

  * Although not shown, as the rotational resistance surface on the outer peripheral surface 22 of the rotational resistor 17, a large number of concave portions and a large number of convex portions are alternately arranged in parallel in the rotational direction X and the rotational center line 7 a of the rotational resistor 17. To do.

  * Although not shown, in the rotational resistor 17 having the circular outer peripheral surface 22, the rotation center line 7 a is eccentric with respect to the center of the circular outer peripheral surface 22. Due to the eccentricity, a convex surface having a large radius and a concave surface having a small radius with respect to the rotation center line 7 a of the rotational resistor 17 are arranged side by side in the rotational direction X.

Next, technical ideas other than the claims will be described.
In the following sixth to tenth inventions, the load of the rotating resistor 17 can be increased.
* In the sixth invention premised on the invention of any one of claims 1 to 5, the outer peripheral surface 22 of the rotational resistor 17 is an uneven rotational resistance surface, that is, a recess 22b, 47 and a rotational resistance surface in which the convex portions 22a and 46 are arranged.

  * In a seventh invention based on the sixth invention (corresponding to the first embodiment), the rotational resistance surface includes a plurality of convex surfaces 22a having a large radius R22 with respect to the rotation center line 7a of the rotational resistor 17 and a plurality of small convex surfaces 22a. The concave surfaces 22b are alternately arranged in the rotation direction X.

  * In an eighth invention based on the sixth invention (corresponding to the third embodiment), the rotational resistance surface has a convex portion 46 and a concave portion 47 extending in the rotational direction X, the rotational center line of the rotational resistor 17. 7a is alternately arranged in the direction of 7a.

  * In the ninth invention (corresponding to the second embodiment) based on the invention of claim 2, the rotational resistor 17 is provided on the outer peripheral wall 20 having the outer peripheral surface 22 and on the inner side of the outer peripheral wall 20. An inner peripheral wall 43 and an inner peripheral passage 45 extending in the rotation direction X between the outer peripheral wall 20 and the inner peripheral wall 43 are provided.

  * In the tenth invention (corresponding to the second embodiment) based on the invention of claim 3, the recess 21 has an inner peripheral wall 43 provided inside the outer peripheral wall 20, and the outer peripheral wall 20 and the inner peripheral wall. An inner peripheral passage 45 that extends in the rotational direction X and communicates with the end surface passage 30 is provided.

It is a use condition figure showing roughly the bicycle exercise equipment which installed the resistance device concerning a 1st embodiment. It is a front view which shows only the said resistance apparatus concerning 1st Embodiment. It is sectional drawing which shows only the said resistance apparatus concerning 1st Embodiment. (A) is the fragmentary sectional view on the AA line of FIG. 3 which shows the state which has a rotation resistor in the obstruction | occlusion position in the said resistance apparatus concerning 1st Embodiment, (b) is a rotation resistor in an open position similarly. It is a fragmentary sectional view showing a state. (A) is a perspective view which shows only the rotation resistance body of the said resistance apparatus concerning 1st Embodiment, (b) is a perspective view which shows only the resistance adjustment body of the said resistance apparatus concerning 1st Embodiment. FIG. 5 is a partial cross-sectional view taken along line B-B showing only an operation mechanism for the resistance adjuster with the cap removed in FIG. 3. (A) is a perspective view which shows only the rotation resistance body of the resistance device concerning 2nd Embodiment, (b) is a perspective view which shows only the rotation resistance body of the resistance device concerning 3rd Embodiment. (A) is a fragmentary sectional view which shows the state which has a rotation resistor in the obstruction | occlusion position in the resistance apparatus concerning 2nd Embodiment, (b) is a fragmentary sectional view which similarly shows the state in which a rotation resistor exists in an open position. is there. (A) is a fragmentary sectional view which shows the state which has a rotation resistor in the obstruction | occlusion position in the resistance apparatus concerning 3rd Embodiment, (b) is a fragmentary sectional view which similarly shows the state in which a rotation resistor exists in an open position. is there.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Resistance apparatus, 7a ... Rotation center line, 11 ... Main body case (outer wall), 16 ... Resistance chamber of main body case, 17 ... Rotation resistor, 19 ... End wall of rotation resistor, 20 ... Outer peripheral wall of rotation resistor 21 ... a recess in the rotational resistor, 22 ... an outer peripheral surface of the outer peripheral wall of the rotational resistor, 22a ... a convex surface, 22b ... a concave surface, 23 ... an inner peripheral surface of the main body case, 24 ... a recess in the inner peripheral surface of the main body case, 25 ... Maximum radius circular locus surface of the rotating resistor, 26 ... Inner circular arc surface of the inner peripheral surface of the main body case, 27 ... Outer peripheral passage, 28 ... Inner peripheral concave surface, 28a, 28b ... End portion, 29 ... Indented Spreading passage, 30 ... end face passage, 31 ... resistance adjusting body, P ... resistance adjusting body closed position, Q ... resistance adjusting body open position, R ... resistance adjusting body intermediate position, X ... rotation direction, XF ... rotation direction , XB ... counter-rotation direction, R22, R24 ... radius, S26, S28 ... distance.

Claims (5)

An outer wall having a resistance chamber enclosing a resistance fluid and a rotation resistor supported by the resistance chamber in the outer wall, and with the rotation of the rotation resistor that can be rotated by human power, the outer peripheral surface of the rotation resistor is A resistance device for exercise equipment, characterized in that when moving toward the inner peripheral surface of the outer wall, the inner peripheral surface of the outer wall is provided with a recess for increasing the radius with respect to the rotation center line of the rotating resistor. An inner peripheral circular arc surface along a maximum radius circular locus drawn by the outer peripheral surface of the rotating resistor is provided on the inner peripheral surface of the outer wall with an outer peripheral passage formed with respect to the outer peripheral surface of the rotating resistor. An inner circumferential concave surface that extends a distance from the outer circumferential surface of the rotating resistor is provided with a passage extending larger than a distance from the inner circular arc surface to the radial circular locus surface. The exercise apparatus resistance device according to claim 1, wherein the exercise device is in communication with each other. The rotation resistor is surrounded by an outer peripheral wall having an outer peripheral surface, an end surface wall provided on the outer peripheral wall on one side of both sides of the rotation resistor in the rotation center line direction, and the outer peripheral wall and the end surface wall. The recess is open on the other side of the rotation resistor in the direction of the rotation center line and communicated with the outer peripheral passage and the spreading passage via the end face passage. The resistance device for exercise equipment according to claim 2, characterized in that: Resistance adjustment interposed between the outer peripheral surface of the rotating resistor and the inner peripheral concave surface of the recess in a range between the rotation direction end and the counter rotation direction end of the rotation direction in the recess. 4. The resistance device for exercise equipment according to claim 2, wherein the body is movably provided so that the position of the body can be adjusted in the rotation direction. The resistance adjuster is an open position in which the outer peripheral surface of the rotary resistor and the inner peripheral concave surface of the recess are opposed to each other in the entire range between the end portion on the rotation direction side and the end portion on the anti-rotation direction side in the recess. And a blocking position interposed between the outer peripheral surface of the rotating resistor and the inner peripheral concave surface of the recess in the entire range between the end portion on the rotation direction side and the end portion on the counter rotation direction side in the recess, Rotation resistance in part of the entire range between the end portion on the rotation direction side and the end portion on the anti-rotation direction side to the end portion on the anti-rotation direction side from the rotation direction side end portion The resistance device for exercise equipment according to claim 4, wherein an intermediate position where the outer peripheral surface of the body and the inner peripheral concave surface of the dent are opposed to each other can be taken.

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