JP2007313079A - Balance training apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make it possible to change the pattern and stroke of swing in a balance training apparatus which imparts exercise loads simulating horse riding to a subject by swinging a seat where the subject sits. <P>SOLUTION: A swing mechanism 3 comprises a motor 13, a box body 3f housing it, a first drive shaft 14 rotationally driven by the motor 13, elevating and lowering levers 17 and 18 having shaft holes 17a and 18a to which the eccentric shafts 14c and 14d are freely rotatably fitted, a pedestal 19 which is supported by the elevating and lowering levers 17 and 18 and to which the seat is loaded, and a regulation shaft 16 which supports the elevating and lowering levers 17 and 18 to the box body 3f at a position separated from the first drive shaft 14 and prevents falling around the eccentric shafts 14c and 14d of the elevating and lowering levers 17 and 18. Thus, vertical swing and back and forth swing are generated, and a circular or elliptic orbit in the side view is drawn. Also, by lifting the pedestal 19 by a freely extendible and contractible lift 20, the pattern of the swing is changed and the stroke is increased. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a balance training apparatus that trains a balance ability by imparting an exercise load imitating riding to the subject by swinging a seat on which the subject is seated.

As described above, the balance training device for training the balance ability by giving the subject an exercise load imitating riding by swinging the seat on which the subject is seated is a simple exercise that can be used from children to the elderly. As an instrument, it has been spread from the original medical facilities for rehabilitation to general households. As a typical prior art of such a balance training apparatus, for example, there is Patent Document 1 previously proposed by the present applicant.
JP 2006-61672 A

  The above-described prior art shows a swing mechanism having a compact structure housed under the seat. However, although the cost of the apparatus can be reduced by that amount, the movement pattern and the stroke width are slightly small, and when the subject becomes skilled, there may be a slight lack of feeling. Further, even when a specific part of a subject is selectively exercised and strengthened, a further improvement in effect is desired.

  The objective of this invention is providing the balance training apparatus which can enlarge the width | variety of a motion pattern and a stroke.

  In the balance training apparatus of the present invention, the swing mechanism swings the seat on which the subject is seated, and in the balance training apparatus that applies the exercise load to the subject, by changing the distance between the seat and the swing mechanism, It further includes expansion / contraction means for changing the swing stroke in the seat.

  According to the above configuration, in the balance training apparatus that exercises the subject's balance ability by applying the exercise load imitating riding to the subject by swinging the seat on which the subject is seated. An expansion / contraction means is interposed between the moving mechanism and the seat, and the distance from the swing center of the swing mechanism to the seat is changed by the expansion / contraction of the expansion / contraction means.

  Therefore, in the past, elderly people and subjects without physical strength used the swinging speed at a low speed. In the present invention, however, the swinging stroke can be changed and used with peace of mind. be able to. Also, the stroke can be increased. In this way, it is possible to give exercises suitable for the subject's physique, physical condition, age, sex, physical fitness, and the like.

  Further, in the balance training apparatus of the present invention, the expansion and contraction means has a substantially “shi” shape in which a free end side portion extending obliquely outward is connected above a substantially “L” shape portion on the base end side. An elevating member that is pivotally connected to the oscillating mechanism to transmit a oscillating motion from the oscillating mechanism, and a portion on the free end side of the elevating member And a first pedestal lift having one end attached to the base end portion of the lifting member and the other end attached to the other end. The distance between the seat and the swing mechanism is increased as the first telescopic lift extends.

  According to said structure, the center of a base moves away from a rocking | fluctuation mechanism, and the stroke (circle or ellipse of the locus | trajectory in a side view) can be enlarged, so that the 1st expansion-contraction lift is extended.

  Furthermore, in the balance training apparatus according to the present invention, one end of the swing mechanism is swing-supported at the upper end of the leg portion installed on the floor, and the other end is interposed between the base end of the leg portion. The seat is supported by the second telescopic lift, and the inclination of the seat due to the expansion and contraction of the first telescopic lift is compensated by the expansion and contraction of the second telescopic lift.

  According to the above configuration, as described above, the inclination of the seat due to the change of the swing stroke caused by the extension / contraction of the first extension / contraction lift is compensated by the extension / contraction of the second extension / contraction lift, and the inclination of the seat is changed. It can be kept constant regardless of the stroke.

  In the balance training apparatus according to the present invention, the swing mechanism is driven by a drive source, a box that houses the drive source, and the drive source, and is rotated about a horizontal axis by a side wall of the box. A first drive shaft having an eccentric shaft that is rotatably supported and in which a recess formed in the lift member is rotatably fitted, and the lift member at a position separated from the first drive shaft And a restricting member that prevents the elevating member from falling about the eccentric shaft.

  According to the above configuration, the swing mechanism is driven around the horizontal axis by the drive source such as a motor, the box that houses the drive source, and the drive source, and is rotated by the side wall of the box. A first drive shaft having an eccentric shaft that is rotatably supported and in which, for example, recesses formed in the elevating member at both ends are rotatably fitted, and at a position spaced from the first drive shaft. The elevating member is supported by the box, and is constituted by a regulating member that prevents the elevating member from falling about the eccentric shaft.

  Therefore, by driving the elevating member that supports the pedestal on which the seat is mounted by the single first drive shaft, the vertical swing (reciprocating motion) can be performed in a compact configuration with the vertical swing (reciprocating motion). (Reciprocating motion), it is possible to draw an elliptical orbit from a circle in a side view, and the movement pattern can be expanded. Moreover, by adding up and down swinging (reciprocating motion), it is possible to activate the subject's autonomic nerve and increase the strength of the legs. Furthermore, by drawing an orbit from a circle to an ellipse in a side view, the load on the human body due to rocking can be changed smoothly and continuously, increasing the exercise effect while reducing damage to the human body. Can do.

  As described above, the balance training apparatus according to the present invention provides a balance for training a subject's balance ability by applying an exercise load imitating horse riding to the subject by swinging a seat on which the subject is seated. In the training apparatus, an extension / contraction means is interposed between the swing mechanism and the seat, and the distance from the swing center of the swing mechanism to the seat is changed by the extension / contraction of the extension / contraction means.

  Therefore, in the past, elderly people and subjects without physical strength used the swinging speed at a reduced speed, but in the present invention, it can be handled by changing the swinging stroke and can be used with confidence. can do. Also, the stroke can be increased. In this way, it is possible to give exercises suitable for the subject's physique, physical condition, age, sex, physical fitness, and the like.

  Further, in the balance training apparatus of the present invention, as described above, the expansion / contraction means has a substantially “L” -shaped portion on the base end side and a portion on the free end side extending obliquely outward. An elevating member that is formed in the shape of a sushi, the base end portion of the elevating member is slidably coupled to the oscillating mechanism, and the oscillating motion from the oscillating mechanism is transmitted; A first telescopic lift having one end connected to the free end side, a pedestal on which the seat is mounted, and one end attached to the base end side portion of the elevating member, and the other end of the pedestal attached to the other end The distance between the seat and the swinging mechanism increases as the first telescopic lift extends.

  Therefore, as the first telescopic lift extends, the center of the pedestal moves away from the swing mechanism, and the stroke (circle or ellipse of the locus in side view) can be increased.

  Furthermore, in the balance training apparatus of the present invention, as described above, one end of the swing mechanism is swing-supported at the upper end of the leg portion installed on the floor, and the other end is the base end of the leg portion. The seat is supported by a second telescopic lift interposed therebetween, and the inclination of the seat due to the expansion and contraction of the first telescopic lift is compensated by the expansion and contraction of the second telescopic lift.

  Therefore, as described above, the tilt of the seat due to the change of the swing stroke due to the expansion and contraction of the first telescopic lift is compensated by the expansion and contraction of the second telescopic lift, and the tilt of the seat is related to the swing stroke. However, it can be kept constant.

  In the balance training apparatus according to the present invention, as described above, the swing mechanism is rotated by the drive source such as a motor, the box housing the drive source, the drive source, and the box. A first drive shaft having an eccentric shaft that is rotatably supported around a horizontal axis by a side wall of the body, and in which, for example, recesses formed in the elevating member are rotatably fitted at both ends; The elevating member is supported by the box at a position spaced from the drive shaft, and the elevating member is configured by a regulating member that prevents the elevating member from falling about the eccentric shaft.

  Therefore, by driving the elevating member that supports the pedestal on which the seat is mounted by a single first drive shaft, it is possible to swing up and down or back and forth or back and forth (reciprocating) in a compact configuration. (Reciprocating motion) can be added, and the trajectory of an ellipse can be drawn from a circle in a side view, and the pattern of movement can be expanded. Moreover, by adding up and down swinging (reciprocating motion), it is possible to activate the subject's autonomic nerve and increase the strength of the legs. Furthermore, by drawing an orbit from a circle to an ellipse in a side view, the load on the human body due to rocking can be changed smoothly and continuously, increasing the exercise effect while reducing damage to the human body. Can do.

[Embodiment 1]
FIG. 1 is a side view showing the overall configuration of a balance training apparatus 1 according to a first embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a perspective side view thereof, and FIG. FIG. 5 is a cross-sectional view taken along the section line AA of FIG. 3, and FIG. 5 is an exploded perspective view thereof. This balance training apparatus 1 is a seat 2 on which a subject sits in a shape generally imitating a horse's back or heel, a swing mechanism 3 provided in the seat 2 and swinging the seat 2, and supports them. The leg part 4 is comprised. The seat 2 is formed by stacking a cushion base 2 b on a seat 2 a attached to the swing mechanism 3.

  On both front sides of the seat 2, a collar 7 is suspended and attached (not shown in FIGS. 2 to 5 for simplification of the drawings). The heel 7 includes a footrest portion 7a on which a subject puts his / her foot, an attachment piece 7b fixed to the seat 2a by screws, and a connection piece 7c for connecting them, and is provided at the lower end of the attachment piece 7b. When the hole 7e formed at the upper end of the connecting piece 7c is fitted into the upright pin 7d, the connecting piece 7c becomes swingable, and the pin 7f provided upright at the lower end of the connecting piece 7c By fitting any of the plurality of holes 7g formed at the upper end of 7a, the length of the heel 7 (height of the footrest 7a) can be adjusted.

  A tread 8 is provided in front of the seat 2. The tread 8 has both ends 8b and 8c of the semi-arc-shaped handle 8a folded inwardly (diameter line direction), and both ends 8b and 8c are pivotally supported at the front portion of the seat 2, The handle 8a can be used by being raised from the seat 2 on the side far from the subject, and can be stored by being tilted.

  Further, a recessed support base is formed in the front side of the seat 2 at the inner peripheral side in the tucked-up state 8 and is covered with an operating device case. After the operation device circuit board 9a is mounted, the operation unit is provided by being covered with the front panel 9b.

  The leg part 4 includes a leg 4a installed on the floor 5, a leg 4b standing from the leg 4a, covers 4c and 4d covering the front and rear of the leg 4a, and the leg 4b. And a cover 4e that covers the surface. The leg base 4a is generally configured by connecting the left and right frames 4f, 4g on the front end side by a connecting frame 4h and connecting the center part by a connecting rod 4i. Screw-type bases 4j that allow height adjustment in accordance with the floor surface 5 are attached to the ends of the frames 4f and 4g, respectively, and at the rear ends of the frames 4f and 4g, respectively. The casters 4k are respectively attached at predetermined heights.

  Accordingly, by lowering the protruding height of the base 4j on the rear end side and lifting the connecting frame 4h on the front end side, the balance training device 1 can be moved while sliding on the floor surface 5, and the base By projecting 4j beyond the caster 4k, the balance training apparatus 1 is held horizontally without being displaced with respect to the floor surface 5, and the swing mechanism 3 can also be moved from the swing mechanism 3 by swinging with the subject placed thereon. 2 can be stably supported.

  The leg column 4b is composed of a pair of left and right support columns 4m, 4n formed in a substantially triangular shape in a side view in order to support the load from the seat 2 and the subject from the swing mechanism 3, and its bottom is the left and right sides. The frames 4f and 4g are fixed at substantially the center, and a bearing 4p is fitted on the top. Further, in at least one of the support pillars 4m and 4n, a recess 4q is formed in the center of the triangle, and a main body that performs drive control from the power supply of the balance training device 1 in the recess 4q. The side circuit board 4r is accommodated. The structure of this pedestal 4b portion is covered with the cover 4e, and the cover 6e is covered with an extendable cover 6 between the upper end of the cover 4e and the bottom surface of the seat 2a.

  FIG. 6 is a perspective view showing a state in which the seat 2 and the covers 4c, 4d, and 4e are removed in the balance training apparatus 1 configured as described above. 6 is a view of the balance training apparatus 1 as viewed from the left rear, and FIG. 5 described above is a view as viewed from the right rear. 7 is an exploded perspective view of the swing mechanism 3, and FIG. 8 is a right side view thereof. With reference to FIGS. 5 to 8, the configuration in the vicinity of the swing mechanism 3 will be described in detail.

  The swing mechanism 3 is supported by the leg portion 4 via a holding member 11. The holding member 11 includes a pair of left and right rotating plates 11a and 11b formed in a substantially U shape in a side view, an inclined shaft support plate 11c that connects the rear end sides of the rotating plates 11a and 11b, and a substantially center. And a lift support plate 11e for connecting the bottom portion, and the support plates 11c, 11d, 11e are fixed to the rotary plates 11a, 11b by welding. . A bush 11f in which a female screw is engraved is press-fitted and fixed to the front end side of the rotary plates 11a and 11b. A bearing 4p provided on the top of the left and right support columns 4m and 4n is fitted to the bush 11f. When the inserted bolt 4s is screwed, the holding member 11 is pivotally supported around the left and right axes by the bearing 4p. A bracket 11h is attached to a substantially central portion of the lift support plate 11e, and a telescopic lift 12 is inserted between the bracket 11h and the connecting rod 4i of the leg base 4a. The tilt angle of the holding member 11, and hence the swing mechanism 3 in the front-rear (x) direction, can be changed by the expansion and contraction of the lift 12. On the other hand, the inclined shaft support plates 11c and 11d are arranged to face each other at a predetermined interval, and bearings 11i and 11j are press-fitted and fixed at the center thereof, and will be described later by the bearings 11i and 11j. Thus, the swing mechanism 3 is supported so as to be swingable and displaceable.

  The telescopic lift 12 includes a cylindrical body 12a, an operating piece 12b that is telescopic from the cylindrical body 12a, a gear box 12c that is attached to the upper part of the cylindrical body 12a, a motor 12d that drives the gear box 12c, And a height detection unit 12e. The lower end of the cylindrical body 12a is pivotally supported on the leg base 4a by the connecting rod 4i so as to be swingable around the left and right axes. The operating piece 12b is composed of a ball screw or the like, and its upper end is pivotally supported by a bracket 11h and a pin 12k of the holding member 11 so as to be swingable around a left and right axis. The ball screw engages with an internal screw formed on the inner peripheral surface of a gear (not shown) in the gear box 12c, and the gear is driven by a worm gear fixed to the output shaft of the motor 12d, whereby the operating piece 12b. Is expanded / reduced from the inside of the cylindrical body 12a, and the inclination angle of the holding member 11, and thus the swing mechanism 3 in the front-rear (x) direction can be changed.

  As shown in FIG. 6, the height detection unit 12e reads the displacement of the slit plate 12g connected to the lower end portion 7d of the operating piece 12b by the connecting piece 12f by the sensor 12h, so that the lift supporting plate 11e The height and therefore the inclination angle of the holding member 11 is detected. The connecting piece 12f enters the slit 12i formed in the cylindrical body 12a, and is connected to the lower end portion 7d of the operating piece 12b by a screw 12j.

  The swing mechanism 3 has a compact structure that can be swung left and right in the state shown in FIG. 7 in a space defined by the rotating plates 11a and 11b and the support plates 11c, 11d, and 11e of the holding member 11. ing. 7 and 8, the swing mechanism 3 is formed by screwing and fixing side plates 3c and 3d to the front gear case 3a and the rear gear case 3b from both the left and right sides with screws 3e. A motor 13, a first drive gear 14, a second drive gear 15, and a restriction shaft 16 are accommodated in the box 3 f.

  The first drive gear 14, the second drive gear 15 and the restriction shaft 16 are formed in the left and right side plates 3c and 3d, respectively, and are fitted into recesses 3j, 3k and 3l having shaft holes 3g, 3h and 3i in the center. The bearings 3m, 3n, and 3o are pivotally supported around a rotation axis in the left-right (y) direction.

  A worm 13 b press-fitted into the output shaft 13 a of the motor 13 meshes with the large-diameter worm wheel 14 a of the first drive gear 14. A bracket 13c is fixed to the motor 13 by welding or the like, and an insertion hole 3p formed in the screw hole 13f formed in the left and right side plates 13d and 13e of the bracket 13c corresponding to the side plates 3c and 3d. The motor 13 is fixed to the swing mechanism 3 by screwing the screw 3e inserted through the screw 3e.

  At this time, on the side surface of the motor 13, a pin 13 g is erected at a position far from the center of gravity G, and the box 3 f moves the first drive gear 14, the second drive gear 15, the restriction shaft 16 and the motor 13. When housing and assembling, the pin 13g first fits into the pin hole 3q formed corresponding to the side plates 3c and 3d. After the box 3f is assembled with the screws 3e, the motor 13 can swing within the range between the first drive gear 14 and the regulating shaft 16 by the pin 13g and the pin hole 3q, as shown in FIG. When the assembled box 3f is positioned with a jig or the like so that the restriction shaft 16 is positioned below the first drive gear 14, and the operator releases the support of the motor 13, the box 3f corresponds to its own weight F1. The worm 13b meshes with the worm wheel 14a by the force F2 (in the swing mechanism 3, the worm 13b hits from under the worm wheel 14a). In this state, the operator screws the screw 3e and fixes the motor 13 to the side plates 3c and 3d, so that the backlash is automatically adjusted optimally.

  The positions of the pin 13g and the pin hole 3q are set to the own weight F1 of the motor 13 in accordance with the force F2 necessary for reducing backlash and the posture of the box 3f during assembly. For example, when the motor 13 is assembled in a horizontal state, the distance from the pin hole 3q to the center of gravity G is D1, and the distance from the output shaft 13a to the point corresponding to the position where the worm 13b meshes with the worm wheel 14a is D2. Then, F1 × D1 = F2 × D2.

  This eliminates the need for complicated backlash adjustments and eliminates the need for special parts such as adjustment screws for backlash adjustment and coil springs for pressurization, thereby reducing costs. it can. Furthermore, backlash is always reduced by the self-weight F1 of the motor 13 even if the screw 3e is loosened or vibration is generated during transportation, or even if the load to be driven increases and force is generated in the direction of opening the mesh. Since the force F2 is applied in the direction of the backlash, the occurrence of backlash noise can be suppressed.

  The pin 13g and the pin hole 3q may be provided interchangeably, that is, the pin 13g may be provided upright on the left and right side plates 13d and 13e, and the pin hole 3q may be formed in the motor 13. 3q may support the pin 13g so as to be rotatable around its axis. Further, although the pin 13g is provided on the output shaft 13a side with respect to the center of gravity G, if the worm 13b is engaged from above the worm wheel 14a, if the pin 13g is provided on the opposite side of the output shaft 13a from the center of gravity G, the same. This eliminates the need for backlash adjustment.

  The rotational force of the motor 13 transmitted to the first drive gear 14 by the worm 13b is lifted by levers 17 and 18 disposed on the outside of the box 3f from eccentric shafts 14c and 14d formed at both ends thereof. Is transmitted to shaft holes 17a and 18a formed in the vicinity of the central portion of each. As shown in FIG. 8, the elevating levers 17 and 18 have a free end side portions 17c and 18c extending obliquely outwardly above a substantially "L" -shaped portion 17b and 18b on the base end side. The eccentric shafts 14c and 14d support the base end portions 17b and 18b.

  The proximal-side portions 17b and 18b of the elevating levers 17 and 18 are also rotated (tumbled) around the eccentric shafts 14c and 14d by a restriction shaft 16 positioned below the first drive gear 14, as will be described later. This prevents the elevating levers 17 and 18 from making an elliptical movement in the side view by the first drive gear 14. At both ends of the first drive gear 14 inserted through the shaft holes 17a and 18a of the elevating levers 17 and 18 from the bearing 3m, nuts 3r are screwed onto external screws 14e formed therein to prevent the first drive gear 14 from coming off. Is called.

  On the other hand, the restricting shaft 16 is formed to have an outer diameter corresponding to the bearing 3o, and can be angularly displaced within the bearing 3o, that is, around an axis in the left-right (y) direction. Connection protrusions 16a and 16b extending in the one-diameter line direction are formed at both ends of the restriction shaft 16. The connecting protrusions 16a and 16b are formed so as to extend in the vertical direction below the shaft holes 17a and 18a in the substantially "L" -shaped portions 17b and 18b on the base end side of the lifting levers 17 and 18, respectively. The slide bearings 17e and 18e are fitted into the holes 17d and 18d, and are prevented from coming off. Therefore, the horizontal movement of the elevating levers 17 and 18 by the eccentric shafts 14c and 14d is restricted, the vertical movement is allowed, and the horizontal stroke (oscillation width) is made larger than the vertical stroke. It is possible to make the seat 2 perform an elliptical movement in the side view as described above.

  As the restricting means, any structure may be used as long as the elevating levers 17 and 18 are reciprocated like the restricting shaft 16, and a reciprocating link structure or the like may be used. The shape and direction of formation of the long holes 17d and 18d may be changed depending on the swing trajectory required for the seat 2. That is, the long holes 17d and 18d are not limited to a straight line shape, but may be an arc shape, an arc shape in which a plurality of radii (curvatures) are combined, or may be formed in a horizontal direction or an inclined direction. Good.

  Furthermore, as shown in FIG. 25 described later, when the distance between the seat 2 and the first drive gear 14 with respect to the restriction shaft 16 is H1 and H2, respectively, and the eccentric amount (stroke) of the eccentric shafts 14c and 14d is H3. The eccentric amount H3 is expanded to H1 / H2 times, and when the arrangement line H4 is tilted, as will be described later, the distribution of the horizontal stroke and the vertical stroke changes, and the stroke is expanded or Can be reduced.

  Bushings 17f and 18f with internal threads are press-fitted into the free ends of the "shi" -shaped lifting levers 17 and 18, and the seat 2 is mounted on the bushings 17f and 18f. Bolts 19e and 19f inserted through bearings 19c and 19d press-fitted into brackets 19a and 19b formed to hang from the rear end of the pedestal 19 are screwed, and thus the rear end of the pedestal 19 is left and right (y). It is pivoted around the direction axis. On the other hand, a bracket 19g is attached to the front end portion of the pedestal 19, and the bracket 19g and the front ends of the U-shaped lift levers 17 and 18 are connected by a telescopic lift 20. Yes.

  The telescopic lift 20 is configured in the same manner as the telescopic lift 12 described above, and includes a cylinder 20a, an operation piece 20b that can be expanded and contracted from the cylinder 20a, and a gear box 20c that is attached to the upper part of the cylinder 20a. A motor 20d for driving the gear box 20c and a height detection unit 20e are provided. A bush 20f having internal threads engraved on both the left and right sides is press-fitted into the lower end of the cylindrical body 20a. The bush 20f is press-fitted into the front ends of the "shi" -shaped lifting levers 17 and 18. The bolts 17h and 18h inserted through the bearings 17g and 18g are screwed, whereby the lower end portion of the telescopic lift 20 is pivotally supported about the left and right (y) direction axis.

  The operating piece 20b is composed of a ball screw or the like, and a bracket 20g is fixed to the upper end thereof. The bracket 20g is pivotally supported by the pin 19h on the bracket 19g of the pedestal 19 so as to be swingable around the left and right axes. The ball screw engages with an internal screw formed on the inner peripheral surface of a gear (not shown) in the gear box 20c, and the gear is driven by a worm gear fixed to the output shaft of the motor 20d, whereby the operating piece 20b. Is expanded / reduced from the inside of the cylindrical body 20a, and the inclination angle of the pedestal 19, and thus the seat 2 in the front-rear (x) direction can be changed. The height detection unit 20e detects the height of the front end of the pedestal 19 and thus the inclination angle of the pedestal 19 by reading the displacement of the slit plate 20i connected to the bracket 20g with the sensor 20j.

  In the swing mechanism 3, the rotational force of the motor 13 transmitted to the first drive gear 14 by the worm 13b is also transmitted from the small diameter gear 14b to the gear 15a of the second drive gear 15. An eccentric shaft 15b is formed on one end side of the second drive gear 15. The eccentric shaft 15b is inserted into a bearing 3n provided on the side plate 3c, and is then a free bearing provided on one end of the eccentric rod 21. The nut 21b is screwed onto the external screw 15c formed at the tip of the nut 21a, thereby preventing the nut from coming off. The other end of the second drive gear 15 is prevented from coming off by inserting a bearing 3n provided on the side plate 3d and then screwing a nut 3s onto an external screw 15d formed at the tip of the bearing 3n.

  The universal bearing 21 a has a spherical bearing surface, and a similar universal bearing 21 c is provided at the other end of the eccentric rod 21. An eccentric shaft 22a formed on one end side of the shaft 22 is inserted into the universal bearing 21c, and is prevented from coming off by an E ring 22b. A central portion 22c of the shaft 22 is rotatably supported by a bearing 11n press-fitted into a hole 11m formed on the rear end side of one rotary plate 11a constituting the holding member 11, and a gear 22d on the other end side. Is engraved.

  The gear 22d meshes with an internal tooth 23a engraved on the inner peripheral surface of the gear 23 arranged outside the rotating plate 11a, and further prevents the external screw 22e engraved at the tip of the gear 22d from coming off. When the nut 22f is screwed, the shaft 22 is integrated with the gear 23 and rotates in conjunction therewith. A worm 24 b press-fitted into the output shaft 24 a of the motor 24 meshes with the external teeth 23 b carved on the outer peripheral surface of the gear 23. The motor 24 is attached to an accommodation recess formed from the outside of the rotating plate 11a by an attachment member 25. The rotation angle of the gear 23 integrated with the shaft 22 is detected by the encoder 26. As shown in FIG. 6, the encoder 26 detects the reference pits 23c formed on the end face of the gear 23, and counts the pits 23d formed at equal intervals as the gear 23 rotates, thereby The rotation angle, and hence the position of the swing base point of the eccentric rod 21, which will be described later, can be detected.

  On the other hand, in the swing mechanism 3, the lower end sides of the front gear case 3a and the rear gear case 3b are formed in parallel with each other, and bushes 3x and 3y in which an internal screw is engraved are press-fitted in the center. The bushes 3x and 3y are screwed with bolts 11x and 11y inserted through bearings 11j and 11i attached to the inclined shaft support plates 11d and 11c. As a result, the swing mechanism 3 can rotate with the line 11z connecting the bearings 11j and 11i as the rotation axis. Therefore, when the second drive gear 15 rotates, the swing mechanism 3 swings around the rotation axis 11z by the action of the eccentric rod 21 from the eccentric shaft 15b. At this time, the eccentric rod 21 is displaced toward and away from the side plate 3c. However, the driving force can be transmitted without being detached from the second driving gear 15 and the shaft 22 by the universal bearings 21a and 21c. It has become.

  Further, when the motor 24 rotationally drives the gear 23, the eccentric shaft 22a to which the other end of the eccentric rod 21 is connected, and thus the swing base point of the eccentric rod 21, can be displaced up and down. As a result, as will be described in detail later, it is possible to give an offset to a position around the rotation axis 11z of the swing mechanism 3 with respect to the holding member 11, and a position inclined by a predetermined angle around the rotation axis 11z is used as a reference. As described above, the swing mechanism 3, and thus the seat 2, can be swung around the rotation axis 11z. Further, by driving the eccentric shaft 22a by the worm 24b and the gear 23, it is possible to prevent the inclination angle from being changed by the load.

  In the balance training apparatus 1 configured as described above, when the motor 13 rotates, the seat 2 is moved back and forth (x) by the eccentric shafts 14c and 14 of the first drive gear 14, the lifting levers 17 and 18 and the restriction shaft 16. Reciprocating in the direction and up and down (z) direction, and as shown in a side view, an elliptical locus R1 is drawn as shown in FIG. Thus, by driving the elevating levers 17 and 18 that support the pedestal 19 on which the seat 2 is mounted by the single first driving gear 14, swinging in the front-rear (x) direction can be achieved with a compact configuration ( The elliptical trajectory R1 can be drawn by adding a swing (reciprocating motion) in the vertical (z) direction to the reciprocating motion, and the motion pattern can be expanded. Further, by adding a swing (reciprocating motion) in the vertical (z) direction to the conventional swing in the front-rear (x) direction, the subject's autonomic nerve is activated and the muscle strength around the legs is increased. be able to. Furthermore, by drawing an orbit from a circle to an ellipse in a side view, the load on the human body due to rocking can be changed smoothly and continuously, increasing the exercise effect while reducing damage to the human body. Can do.

  Here, if the ratio of the period between the gear 14b of the first drive gear 14 and the gear 15a of the second drive gear 15, and hence the gear ratio is set to 1: 1, for example, the rotation speed ratio is also 1: 1. Become. When the timing of the origin coincides at 0 °, the seat 2 draws a straight locus L11 from obliquely forward to backward in plan view as shown in FIG. FIG. 11 shows a change in meshing between the first drive gear 14 (x-axis direction) and the second drive gear 15 (y-axis direction) at this time, that is, a change in the position of the seat 2 in each axis direction. Show. When the phase of the second drive gear 15 is delayed by 180 ° with respect to the first drive gear 14, only the swing direction changes and a similar linear locus is obtained.

  On the other hand, when the meshing timing of the first drive gear 14 (x-axis direction) and the second drive gear 15 (y-axis direction) is shifted by a quarter period, that is, 90 °, By swinging by the eccentric rod 21, the seat 2 draws a circular locus L12 in a plan view as shown in FIG. FIG. 13 shows a change in meshing between the first drive gear 14 and the second drive gear 15 at this time. 12 and 13 show an example in which the phase of the second drive gear 15 is delayed by 90 ° with respect to the first drive gear 14. A 90 degree advance, that is, a delay of 270 degrees results in a similar circular locus, and only the starting point is different. In the case of other phase shifts, a locus is obtained by combining the above displacements at the ratio of the shifts.

  On the other hand, when the gear ratio of the gear 14b of the first drive gear 14 and the gear 15a of the second drive gear 15 is set to 1: 2, the rotation speed ratio is 2: 1 and the origin timing is 0 °. , The seat 2 draws a trajectory L <b> 21 of eight horizontal characters (drawn from the inner periphery) in a plan view, as shown in FIG. 14, by swinging by the eccentric rod 21. FIG. 15 shows a change in meshing between the first drive gear 14 and the second drive gear 15 at this time.

  If the timing of the origin is shifted by 180 °, the seat 2 draws a trajectory L22 of 8 characters (drawn from the outer periphery) as shown in FIG. FIG. 17 shows a change in meshing between the first drive gear 14 and the second drive gear 15 at this time.

  Furthermore, when the phase of the second drive gear 15 is delayed by 90 ° with respect to the first drive gear 14, the seat 2 has an inverted V-shaped locus L23 in plan view as shown in FIG. I will draw. The change in meshing between the first drive gear 14 and the second drive gear 15 at this time is shown in FIG. Further, when the phase of the second drive gear 15 is advanced by 90 ° with respect to the first drive gear 14 (a delay of 270 °), the seat 2 is V-shaped in a plan view as shown in FIG. The locus L24 is drawn. FIG. 21 shows a change in meshing between the first drive gear 14 and the second drive gear 15 at this time.

  Further, when the gear ratio of the gear 14b of the first drive gear 14 and the gear 15a of the second drive gear 15 is set to 2: 1, the rotation speed ratio becomes 1: 2, and the origin timing is 0 °. , The seat 2 draws a vertical L-shaped locus L3 in plan view, as shown in FIG. 22, by the swinging by the eccentric rod 21.

  However, it is assumed that the eccentric shaft 22a, which is the swing base point of the eccentric rod 21, is in a position where the offset about the rotation axis 11z is not generated in the swing mechanism 3. When the offset occurs, the trajectories L1, L21, L22, L23, and L3 appear to be shifted in the offset direction, as will be described later. The rotation axis 11z is assumed to be horizontal. The trajectory when the rotation axis 11z is inclined will also be described later.

  The above state is a locus in a state in which the long diameter direction of the long holes 17b and 18b is the vertical direction. Therefore, when the telescopic lift 12 is expanded and contracted as described above without expanding and contracting the telescopic lift 20, for example, when the telescopic lift 12 is extended, the seat 2 tilts forward from the holding member 11. The locus of the seat 2 drawn by the eccentric shafts 14c and 14d, the lifting levers 17 and 18 and the restriction shaft 16 of the first drive gear 14 is an elliptical locus R2 tilted forward as shown in FIG. It becomes. In this case, the component in the front-rear (x) direction and the component in the vertical (z) direction are interchanged, and when tilted by a certain angle or more, as shown in FIG. 24, the locus R1 shown in FIG. In comparison, the horizontal stroke W1 of the ellipse decreases to W1 ′, but the vertical stroke W2 increases as indicated by W2 ′. In this way, the size of the trajectories R1 and R2 can be changed.

  Further, by extending and retracting the telescopic lift 20, the inclination of the seat 2 changes as shown in FIG. In this case, the distance H1 from the swing mechanism 3 (the center of the regulation shaft 16 serving as the swing base point) to the seat 2 (the swing center of the pedestal 19) changes to H1 ′, as shown in FIG. When the major axis direction of the long holes 17d and 18d is in the vertical direction, the vertical stroke W2 does not change, and the horizontal stroke W1 changes to W1 ". The distance from the rotation axis 11z to the seat 2 (the swing center of the pedestal 19) also changes, and the stroke changes.

  Thus, the swing stroke can be changed by extending and retracting the telescopic lifts 12 and 20. Further, as the telescopic lift 20 is extended, the front side of the seat 2 is moved away from the rotation axis 11z, and the stroke of the swing (roll to yaw described later) around the rotation axis 11z is increased. be able to. As a result, in the past, elderly people and subjects without physical strength used the swinging speed at a reduced speed. In the present embodiment, however, the swinging stroke can be changed, and this can be handled safely. You can use it with heart. Also, the stroke can be increased. In this way, it is possible to provide exercise suitable for the physique, physical condition, age, sex, physical strength, etc. of the subject, and to realize a balance training apparatus with excellent exercise effects.

  In addition, by extending and retracting the telescopic lifts 12 and 20 in conjunction with each other, the seat 2 can be moved up and down while changing the movement locus and stroke of the seat 2 as described above. Can increase the number of exercise menus.

  On the other hand, by extending and retracting the telescopic lifts 12 and 20 in conjunction with each other, as shown in FIG. 26, the inclination angle of the rotation axis 11z can be changed back and forth without changing the angle of the seat 2 (pedestal 19). It can change in the plane from the (x) direction to the vertical (z) direction. That is, in FIG. 26, when the tilt angle θ of the rotation axis 11z with respect to the floor surface 5 is 45 °, and the telescopic lift 12 is reduced from that state, the rotation axis 11z approaches the horizontal state and is telescopic. When the lift 12 is extended, the rotation axis 11z is displaced so as to approach (stand up) the vertical state. In FIG. 26, the holding member 11, the swing mechanism 3, the elevating levers 17, 18 and the pedestal 19 in the reference state are indicated by solid lines, the state in which the rotation axis 11z is inclined to the vertical state is indicated by phantom lines, and reference numerals of respective parts It is shown with a '.

  The second drive gear 15 and the eccentric rod are displaced so that the rotational axis 11z is displaced from the front-rear (x) direction to the vertical (z) direction (ie, the inclination angle θ increases). The swing around the rotation axis 11z due to 21 or the like is changed from the swing (roll) in the left-right (y) direction to the swing around the substantially vertical (z) axis (twist (the swing center of the seat 2 is the rotation axis 11z). The position of the reciprocating motion in the front-rear (x) direction by the swing mechanism 3 can be switched to the reciprocating motion component in the vertical (z) direction. As a result, the movement pattern can be changed, and the width of each stroke can be changed with the change of the movement pattern, and the movement pattern can be obtained according to the part to be trained by the subject. And, it is possible to realize a balance training apparatus with various continuous exercise patterns and excellent continuous usability.

  Table 1 shows an example of the change in the swing angle accompanying the change in the tilt angle θ. The swing angle varies depending on the amount of eccentricity of the eccentric shaft 15b in the second drive gear 15, the length of the eccentric rod 21, the distance from the rotation axis 11 to the shaft 22, and the like.

  Further, as the rotation axis 11z rises from the horizontal state (θ = 0 °), as described above, the swing from the left-right (y) direction (roll) changes to the swing around the vertical (z) axis. When the gear ratio between the gear 14b of the first drive gear 14 and the gear 15a of the second drive gear 15 is, for example, 1: 2, the seat 2 is shown in FIG. In FIG. 27, such a horizontal L-shaped locus L21 becomes smaller as indicated by reference symbol L21 ′, and instead, twists as indicated by reference symbols V1 and V2 are added. This twist differs depending on the meshing timing of the first drive gear 14 and the second drive gear 15, and the timing is matched in the state of the reference position P0 (displacement 0) (the position of the second drive gear 15 at 0 ° is When the first drive gear 14 is adjusted to the 0 ° position), the seat 2 is twisted in the rolling direction as indicated by reference numeral V1 as it rolls to the left and right, and the reference position P0. As the position returns to, the twist of the seat 2 is resolved as indicated by reference numeral V2. Thereby, the exercise effect can be further enhanced.

  On the other hand, when the position of 0 ° of the second drive gear 15 is aligned with the position of 180 ° of the first drive gear 14 at the gear ratio of 1: 2, the same figure in the horizontal 8 is used. In this case, as shown by reference numeral V2, the seat 2 is twisted in the opposite (counter) direction as it rolls to the left and right as opposed to the above-described case. Thus, as the position returns to the reference position, the twist of the seat 2 is eliminated as indicated by reference numeral V1. In this case, a soft exercise can be performed.

  In the case of the V-shape shown in FIG. 20, the seat 2 is twisted in the rolling direction as indicated by reference numeral V1, as it rolls left and right.

  Furthermore, the height of the seats 2 from the floor surface 5 can be changed by tilting the telescopic lifts 12 and 20 in conjunction with each other so as to cancel the tilt due to the mutual expansion and contraction. Even if it is not provided separately, it is possible to match the height of the subject or to easily get on and off the subject.

  In the case where the local exercise effect is enhanced by keeping the seat 2 tilted, the change of the tilt of the seat 2 due to the expansion / contraction of the telescopic lift 12 is not canceled by the telescopic lift 20. Well, it may remain tilted by a desired angle. When the seat 2 is attached to the pedestal 19 by being rotated by 90 °, the swinging mechanism 3 swings in the left-right (y) direction (reciprocating), and in the vertical (z) direction. And the locus of the seat 2 viewed from the front and rear becomes the ellipse. And the rocking | fluctuation by the said 2nd drive gearwheel 15, the eccentric rod 21, etc. turns into rocking | fluctuation (pitch) of the front-back (x) around the left-right (y) axis. In addition, the seat 2 may be rotated 180 ° with respect to the pedestal 19, that is, attached in the reverse direction. As described above, the mounting direction of the seat 2 with respect to the swing mechanism 3 may be appropriately determined according to the application required for the balance training apparatus 1.

  On the other hand, the gear 23 is rotated by the motor 24. When the eccentric shaft 22a integral with the gear 23, and therefore, the swing base point of the eccentric rod 21 is most attracted to the eccentric shaft 22a, that is, the eccentric rod 21 is dead. When at the point and when pushed up most by the eccentric shaft 22a, that is, when the eccentric rod 21 is at the top dead center, the swing mechanism 3 produces the maximum offset around the rotation axis 11z. As a result, when θ≈0 ° and the twist (yaw) component, as shown in FIGS. 28 and 29, the swing reference position changes from P0 to P0 ′. FIG. 28 shows a case where the swing base point of the eccentric rod 21 is attracted to the eccentric shaft 22a, and the swing mechanism 3 is offset to the left side. On the other hand, FIG. 29 shows a case where the swing base point of the eccentric rod 21 is pushed up by the eccentric shaft 22a, and the swing mechanism 3 is offset to the right side. When θ = 0 ° and there is no twist (yaw) component, the axis of back-and-forth swing is shifted to the left and right as indicated by reference numerals V11 to V11 ′ in FIG.

  As a result, the locus of the seat 2 can be tilted around the rotation axis 11z, and the left and right roll angles, the left and right twist angles, and the left and right straight movement amounts can be differentiated between the left side and the right side. As a result, for example, the side muscles and adductor muscles can be partially strengthened, and it is possible to efficiently build physical strength and to develop the sense of balance of the subject. Further, when the motor 24 is continuously rotated, the inclination of the swing mechanism 3 around the rotation axis 11z can be continuously changed, and the exercise pattern is diversified so that the subject does not get bored. An excellent balance training apparatus can be realized.

  Furthermore, the meshing timing of the first drive gear 14 and the second drive gear 15 is set such that the 0 ° position of the first drive gear 14 is set at the 0 ° position of the second drive gear 15 as described above. In addition, the eccentric shafts 14c and 14d are set at the bottom dead center at the 0 ° position of the first drive gear 14. The inclination angle of the tooth profile of the worm 13b is set to an angle that can be reversed with respect to the input of the load from the pedestal 19 side as a load when the motor 13 is not energized.

  With this configuration, even when the power energization of the motor 13 is stopped in a state where the first drive gear 14 is at an arbitrary angle other than 0 °, the front and rear (x) and the vertical (z) directions The first drive gear 14 that generates the swing is reversed by the load of the seat 2 or the subject, and the motor 13 and the second drive gear 15 that generates the swing in the left-right (y) direction are reversed. As described above, when the eccentric shafts 14c and 14d are at the bottom dead center, and therefore when the seat 2 reaches the lowest position, the second axis is also at the middle point in the front-rear (x) and left-right (y) directions. When the timing of meshing between the first drive gear 14 and the second drive gear 15 is set, the seat 2 naturally sinks only by turning off the power, stops at the lowest position, and moves back and forth (x) and left and right. Also in the (y) direction, the center point is restored.

  This makes it possible to stop at the midpoint without using sensors or complicated controls, making it easier for the subject to get on and off, and for the subject to ride in the correct posture, giving a balanced exercise. can do.

  Furthermore, the tooth profile of the worm 13b can be engraved in either the clockwise direction or the counterclockwise direction corresponding to the rotational direction of the motor 13 and the drive gears 14 and 15. When the seat 2 sinks with the load as described above (reversely driven), a force is applied from the worm wheel 14a to the worm 13b in the direction in which the output shaft 13a is press-fitted (the direction of the motor 13). It is engraved. As a result, when the seat 2 is sinking due to the weight of the subject, the worm 13b is dropped from the output shaft 13a, and the seat 2 is not suddenly lowered.

  FIG. 30 is a block diagram showing an electrical configuration of the balance training apparatus 1. In response to an operation from the operation circuit board 9a, the main body side circuit board 4r includes a swinging motor 13 made of a DC brushless motor, a seat tilting motor 20d made of a DC motor, a DC motor, and the like. The mechanical mechanism left / right tilting motor 24 including a mechanical mechanism front / rear tilting (up / down) motor 12d and a DC motor is driven. The amount of inclination of the pedestal 19 (seat 2) with respect to the swing mechanism 3 by the seat inclination motor 20d is detected by a height detection unit 20e, and the pedestal 4b by the mechanical mechanism forward / backward inclination (lifting) motor 12d. The amount of inclination of the holding member 11 (swinging mechanism 3) with respect to the angle, that is, the inclination angle θ of the rotation axis 11z is detected by the height detection unit 12e. The amount of inclination of the moving mechanism 3 is detected by the encoder 26, and the detection results are input to the main circuit board 4r.

  FIG. 31 is a block diagram showing an electrical configuration of the main body side circuit board 4r. First, the commercial alternating current input from the power plug 51 is converted into, for example, 140V, 100V, 15V, 12V, and 5V direct current in the power supply circuit 52 and supplied to each circuit in the main body side circuit board 4r. In the main body side circuit board 4r, the operation is controlled by the control circuit 53 including the microcomputer 53a, and the operation device circuit board 9a performs display output via the operation device driving circuit 54, and the operation device circuit. Accepts input from the substrate 9a. The input, the rotational angle position and rotational speed of the swinging motor 13 input via the sensor signal processing circuit 55, the height detection units 20e, 12e input via the sensor drive circuits 56, 57, 58, and In response to the detection result of the encoder 26, the control circuit 53 drives the swinging motor 13 via the drive circuit 59 and drives the tilting motors 20 d, 12 d, 24 via the drive circuit 60.

  It should be noted on the driving surface that, as shown in FIG. 32, the control circuit 53 switches the rotation direction of the swinging motor 13 when the inclination angle θ of the rotation axis 11z is changed by the motor 12d. It should also be noted that, as shown in FIG. 32, the control circuit 53 has a rotational speed when the seat 2 moves upward from the rotational angle of the swinging motor 13 input via the sensor signal processing circuit 55. Control is performed so as to be relatively slow, and control is performed so that the rotational speed is relatively fast when going down.

  Therefore, by first switching the rotation direction of the motor 13 in response to the change in the inclination angle θ of the rotation axis 11z, the subject can experience the swing in the reverse orbit without changing the front-rear direction, You can train muscles that you don't normally use and have little to train.

  Further, the maximum torque required for the motor 13 is suppressed by slowing the rotational speed of the swinging motor 13 when the seat 2 moves upward and increasing it when the seat 2 moves downward. The moving mechanism 3 can be reduced in size. Further, in terms of exercise effect, even with the same vertical stroke, the weight load on the leg placed on the heel 7 can be increased, and the leg strength of the subject can be improved.

It is a side view which shows the whole structure of the balance training apparatus which concerns on the 1st Embodiment of this invention. It is a top view of the balance training apparatus shown in FIG. It is a see-through | perspective side view of FIG. It is sectional drawing seen from the cut surface line AA of FIG. It is the disassembled perspective view seen from the right rear of FIG. FIG. 6 is a perspective view of the balance training apparatus shown in FIG. 5 as seen from the left rear side with the seat and cover removed. It is a disassembled perspective view of a rocking | fluctuation mechanism. It is a right side surface of FIG. It is a side view which shows the rocking locus | trajectory of the seat containing the vertical motion by this invention. It is a top view which shows the rocking locus | trajectory of a seat in case the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 1, and the timing of an origin is in agreement with 0 degree. It is a graph which shows the change of meshing of the 1st drive gear and the 2nd drive gear in the case of Drawing 10. It is a top view which shows the rocking locus | trajectory of a seat when the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 1, and the timing of an origin has shifted | deviated 90 degrees. It is a graph which shows the change of meshing of the 1st drive gear and the 2nd drive gear in the case of Drawing 12. It is a top view which shows the rocking locus | trajectory of a seat in case the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 2, and the timing of an origin is in agreement with 0 degree. It is a graph which shows the change of meshing of the 1st drive gear and the 2nd drive gear in the case of Drawing 14. It is a top view which shows the rocking locus | trajectory of a seat in case the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 2, and the timing of an origin has shifted | deviated 180 degrees. FIG. 17 is a graph showing a change in meshing between the first drive gear and the second drive gear in the case of FIG. 16. It is a top view which shows the rocking locus | trajectory of a seat in case the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 2, and the timing of an origin has shifted | deviated 90 degrees. It is a graph which shows the change of meshing of the 1st drive gear and the 2nd drive gear in the case of Drawing 18. It is a top view which shows the rocking locus | trajectory of a seat when the gear ratio of a 1st drive gear and a 2nd drive gear is 1: 2, and the timing of an origin has shifted | deviated 270 degrees. It is a graph which shows the change of meshing of the 1st drive gear and the 2nd drive gear in the case of Drawing 20. It is a top view which shows the rocking locus of a seat when the gear ratio of the 1st drive gear and the 2nd drive gear is 2: 1, and the timing of an origin is in agreement with 0 degree. It is a side view which shows the rocking locus of a seat at the time of extending the telescopic lift which makes a rocking mechanism incline. FIG. 24 is a side view for comparing seat swing trajectories in the case of FIG. 9 and the case of FIG. 23. It is a side view which shows the rocking locus | trajectory of a seat at the time of extending the telescopic lift which makes a seat incline. It is a side view which shows the displacement of each part at the time of inclining the said rocking | fluctuation mechanism, without inclining a seat. It is a top view which shows the change of the rocking | fluctuation pattern of a seat accompanying the inclination of the said rocking | fluctuation mechanism. It is a top view which shows the change of the rocking | fluctuation pattern of a seat by the offset of horizontal rocking | fluctuation. It is a top view which shows the change of the rocking | fluctuation pattern of a seat by the offset of horizontal rocking | fluctuation. It is a block diagram which shows the electric constitution of a balance training apparatus. It is a block diagram which shows the electrical constitution of a main body side circuit board. It is a side view for demonstrating control operation | movement of the motor for rocking | fluctuation by a control circuit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Balance training apparatus 2 Seat 2a Seat 2b Cushion base 3 Oscillating mechanism 3a, 3b Gear case 3c, 3d Side plate (side wall)
3f Box 3q Pin hole 4 Leg part 4a Leg base 4b Leg column 4r Main body side circuit board 5 Floor surface 7 ８ 8 Tanzana 9a Operating device circuit board 11 Holding members 11a, 11b Rotating plates 11c, 11d Inclined shaft support plate 11e Lift support plate 11z Rotating axis 12 Telescopic lift (second telescopic lift)
12d, 20d Motor 12e, 20e Height detection unit 13 Motor (drive source)
13a, 24a Output shafts 13b, 24b Worm 13g Pin 14 First drive gear (first drive shaft)
14a Worm wheels 14c, 14d, 15b, 22a Eccentric shaft 15 Second drive gear (second drive shaft)
16 Restriction shaft (regulation member)
16a, 16b Connecting projections 17, 18 Elevating lever (elevating member)
17a, 18a Shaft hole (recess)
17d, 18d Long holes 17e, 18e Slide bearing 19 Pedestal 12 Telescopic lift (Expandable means, first telescopic lift)
21 Eccentric rods 21a, 21c Universal bearing 22 Shaft 23 Gear 24 Motor 25 Mounting member 26 Encoder 51 Power plug 52 Power supply circuit 53 Control circuit 53a Microcomputer 54 Actuator drive circuit 55 Sensor signal processing circuits 56, 57, 58 Sensor drive circuit 60 Driving circuit

Claims (4)

In a balance training apparatus that imparts an exercise load to the subject by swinging a swing mechanism on a seat on which the subject is seated,
A balance training apparatus comprising: expansion and contraction means for changing a swing stroke of the seat by changing a distance between the seat and the swing mechanism. The expansion / contraction means is
A free end side portion extending obliquely outward is formed in a substantially “S” shape above a substantially “L” shape portion on the base end side, and the base end portion is the swing mechanism. An elevating member that is oscillatingly coupled to the oscillating mechanism to transmit the oscillating motion from the oscillating mechanism;
One end is connected to the free end side portion of the elevating member, and a pedestal on which the seat is mounted,
One end is attached to the base end side portion of the elevating member, and the other end of the pedestal is attached to the other end.
The balance training apparatus according to claim 1, wherein the distance between the seat and the swinging mechanism increases as the first telescopic lift extends. The swing mechanism is supported by a second telescopic lift, one end of which is swing-supported at the upper end of the leg portion installed on the floor, and the other end interposed between the base end of the leg portion,
The balance training apparatus according to claim 2, wherein the inclination of the seat due to expansion and contraction of the first telescopic lift is compensated by expansion and contraction of the second telescopic lift. The swing mechanism is
A driving source;
A box housing the drive source;
A first rotation shaft is rotatably driven by the drive source, and is supported by a side wall of the box so as to be rotatable about a horizontal axis, and has an eccentric shaft in which a recess formed in the elevating member is rotatably fitted. 1 drive shaft,
The elevating member is supported by the box at a position separated from the first drive shaft, and includes a restricting member that prevents the elevating member from falling about the eccentric shaft. Item 4. The balance training device according to any one of items 1 to 3.

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