JP2009160180A - Passive exercise equipment - Google Patents

Abstract

Disclosed is a passive exercise device capable of determining whether or not a bending angle of a user's knee is maintained within a specified range and prompting the user to exercise correctly.
A drive device 50 is used by a user M swinging the seat portion 21 with movement in the front-rear direction in a state where the heel portion is placed on the seat portion 21 and the foot is placed on the footrest 40. The weight of the person M acting on the leg is changed. After the movement of the seat unit 21 to the front end position by the driving device 50 is detected by the seat position detection unit 50a, the determination unit detects that the user M has stepped on the footrest 40 by the stepped state detection unit 40c. If the time required until the time is equal to or shorter than the predetermined reaction time, it is determined that the bending angle θ of the knee of the user M is maintained within the specified range. It is determined that the bending angle θ is not maintained within the specified range.
[Selection] Figure 1

Description

  The present invention mainly supports the user's buttocks by the seat part and moves the seat part with the user's feet placed on the footrest to change the weight acting on the user's leg part. The present invention relates to a passive exercise device that expands and contracts thigh muscle groups.

  Conventionally, as a passive exercise device to be used while the user is seated, a seat part that supports the user's buttocks, and a user's left and right feet that are placed on the seat while the user places the buttocks on the seat part, respectively. There has been proposed an exercise assisting device that includes a footrest and adopts a configuration in which the seat portion is swung with movement in the front-rear direction by a driving force generated by a driving device including an electric motor or the like (see, for example, Patent Document 1). ).

  In the exercise assisting device described in Patent Document 1, when the seat seated by the user is swung by the driving force of the electric motor, the position of the user's buttocks can be changed. The self-weight which acts on a user's leg part can be changed. That is, the weight of the user is supported at three points, that is, the seat portion and the left and right footrests, but the weight of the user is supported between the seat portion and the footrests by displacing the position of the seat portion. The ratio can be changed.

With this type of exercise assist device, the user can hardly bend and stretch the knee, and the tension of the thigh muscle group can be mainly tensioned / relaxed by the change of the weight acting on the leg of the user. As a result, even for a user who has knee pain such as a diabetic patient, the thigh muscle group can be strengthened without placing a burden on the knee. In addition, the exercise using the exercise assisting device can reduce the load on the user's leg compared to the exercise in which the user's total weight acts on the user's leg, and further, the driving device can reduce the seat portion. By displacing the user, it can be performed passively without demonstrating muscular strength, so the burden on the user can be kept small, and even a user with low exercise ability can continue. It becomes easy. Moreover, since the volume of the thigh muscle group is large, the sugar metabolism accompanying the thigh muscle contraction can also be expected to contribute to the improvement of lifestyle-related diseases.
JP 2007-89650 A (Pages 5-8)

  By the way, in order to allow the user to exercise effectively using the passive exercise apparatus having the above-described configuration, it is important to change the weight of the user's leg acting so as to expand and contract the thigh muscle group. For this purpose, it is ideal for the user to keep the knee bending angle within a predetermined range with little knee bending and stretching.

  That is, if the user's knees are bent and extended, the change in the ratio of supporting the user's weight between the seat part and the footrest is reduced due to the displacement of the seat part, and acts on the leg part of the user. Since the change in the weight of the thigh becomes small, the stimulation to the thigh muscle group becomes small and the user cannot exercise effectively. In addition, it is not preferable for a user having knee pain to place a burden on the knee by bending and stretching the knee.

  For these reasons, in order to obtain a favorable exercise effect using a passive exercise device, the user can grasp whether or not the knee bending angle is maintained within the specified range. It is desirable to seek improvement for users who have not been able to maintain the knees, and to encourage correct movement with the knee bending angle maintained within a specified range.

  However, it is difficult for the user to determine whether or not the knee bending angle is maintained within the specified range by himself / herself. It is difficult in practice to take measures such as having other people look at the situation and assess the knee bending angle.

  The present invention has been made in view of the above circumstances, and determines whether or not the bending angle of the knee of the user is maintained within a specified range, and determines the bending angle of the knee with respect to the user within the specified range. It is an object of the present invention to provide a passive exercise device that can promote correct exercise maintained inside.

  According to the first aspect of the present invention, a seat portion that can be swung with movement in the front-rear direction and supports the user's buttocks, and the user puts the foot in a state where the buttocks are placed on the seat portion. In response to a stepping on by the user's foot, it moves downward and when the stepping is released, the footing base returns to the upper side, and the seat part is used on the footing base by moving it to the front end position of the moving range. Drive device that moves the seat part to change its own weight that acts on the leg part of the user so that the person's foot is depressed, and seat position detection that detects that the seat part has moved to the front end position of the movement range And the stepping state detection unit that detects whether or not the foot of the user has stepped on the footrest, and the stepping state detection unit detects the stepping after the movement of the seat unit to the front end position is detected by the seat position detection unit. Until If the required time is less than or equal to the predetermined reaction time, it is determined that the knee bending angle of the user is maintained within a specified range, and if the required time exceeds the reaction time, the bending angle of the user's knee Is provided with a determination unit that determines that is not maintained within the specified range.

  According to this configuration, in the determination unit, a required time from when the movement of the seat unit to the front end position is detected by the seat position detection unit until the depression is detected by the depression state detection unit is equal to or shorter than a predetermined reaction time. If the bending angle of the user's knee is maintained within the specified range, and if the required time exceeds the reaction time, the bending angle of the user's knee is not maintained within the specified range. Therefore, it is possible to determine whether or not the bending angle of the user's knee is maintained within the specified range. That is, when the user is performing a correct exercise while maintaining the knee bending angle within a specified range, the weight of the seat acting on the user's leg increases as the seat moves to the front end position. It is said that the stepping by the user's foot is detected in the footrest within the reaction time from the time when the seat portion moves to the front end position, and the bending angle of the user's knee is maintained within the specified range in the determination portion. Judgment is made. On the other hand, for example, if the height of the seat part does not match the user's physique, or if the foot of the footrest is not fully depressed by the user's foot, the user can keep the knee bending angle within the specified range. If the maintained correct movement cannot be performed, the stepping of the footrest by the user's foot is delayed, so that the footing of the user's foot on the footrest is within the reaction time from the time when the seat portion moves to the front end position. It is not detected, and the determination unit determines that the bending angle of the user's knee is not maintained within the specified range. As a result, the user can be encouraged to perform correct exercise while maintaining the knee bending angle within a specified range, and a preferable exercise effect can be generated using the passive exercise device.

  When the number of times that the bending angle of the knee of the user is determined not to be maintained within the specified range in the determination unit according to the invention of claim 1 is reached, the seat portion And a control unit that controls the driving device so as to stop the seat unit by decreasing the moving speed of the sheet with time.

  According to this configuration, when the user is not able to maintain the knee bending angle within the specified range, the control unit stops the seat portion, and thus an unreasonable burden is imposed on the user having knee pain, for example. Can be prevented. In addition, since the control unit stops the seat unit after reducing the moving speed of the seat unit over time, it is possible to prevent the user from falling off the seat unit when the seat unit is stopped. Further, since the seat portion does not stop until the number of times that the determination unit determines that the bending angle of the user's knee is not maintained within the specified range reaches the specified number of times, the user who is able to exercise correctly 1 The seat portion can be prevented from stopping when the timing of depressing is deviated by a certain degree, and a user who is exercising correctly can continue to exercise.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, informing means for informing the user of at least one of the display of the display unit and the sound output from the audio output unit. It is characterized by providing.

  According to this configuration, since it is possible to inform the user whether or not the bending angle of the user's knee is maintained within the specified range, the user can perform correct exercise while maintaining the bending angle of the knee within the specified range. By urging against, it is possible to produce a preferable exercise effect using a passive exercise device.

  According to the present invention, the bending angle of the knee of the user is within a specified range based on the time required from when the seat position detection unit detects the movement of the seat unit to the front end position until the depression state detection unit detects the depression. It is possible to determine whether or not the knee is maintained within the specified range, so that the user can be encouraged to exercise correctly while maintaining the knee bending angle within a specified range. There is an effect that can be generated.

  As shown in FIG. 1, the passive exercise apparatus of the present embodiment includes a base 10 placed at a fixed position such as a floor, and a seat portion 21 that supports the buttocks of the user M on the base 10. It has the structure which comprises the sheet | seat support stand 20 comprised in the upper end part. This passive exercise device is used in a state where the user M is seated on the seat portion 21 (sitting position) so that the buttocks rest on the contact surface 21a which is the upper surface of the seat portion 21. Here, the base 10 may be embedded in the floor. In the following description, the upper and lower sides of the base 10 placed on the floor are the upper and lower sides, and the front and rear and left and right of the user M sitting on the seat portion 21 are front and rear and right and left (that is, the left side in FIG. In the following description, the upper part of FIG.

  In the base 10, a pair of footrests 40 on which the left and right feet of the user M are respectively placed is provided at a portion in front of the seat support 20. The footrest 40 has the upper surface formed in a size on which the foot of the user M (the entire sole) is placed as the footrest surface 40a, and the foot of the user M is brought into contact with the footrest surface 40a. The foot position of the user M is regulated by placing it. Here, a material or shape having a large friction coefficient is used for the footrest surface 40a of the footrest 40, thereby preventing the user M's foot placed on the footrest 40 from slipping.

  The seat support 20 includes a driving device 50 that causes the seat portion 21 to swing with movement in the front-rear direction, and a lifting device 60 that raises and lowers the seat portion 21 and the driving device 50 relative to the base 10 (see FIG. 2). It is equipped with. The lifting device 60 will be described later.

  The driving device 50 moves the seat portion 21 in a state where the user M places the heel portion on the contact surface 21a of the seat portion 21 and puts the foot on the foot placement surface 40a of the footrest base 40, thereby Change the weight of the legs. In short, the weight of the user M is supported at three points, that is, the seat part 21 and the left and right footrests 40. However, if the position of the seat part 21 is displaced to displace the buttocks of the user M, the seat The ratio of supporting the weight of the user M changes between the portion 21 and the footrest 40, and as a result, the own weight acting on the leg of the user M increases or decreases.

  Here, when the user M maintains the knee bending angle θ within a predetermined range, the weight of the user M acting on the seat portion 21 is reduced by the seat portion 21 moving to the front end position side. Then, similarly to the state in which the knee is bent in the squat exercise, the load acting on the thigh of the user M is increased, and the muscle group of the thigh can be contracted. Therefore, when the driving device 50 moves the seat portion 21 between the front end position and the rear end position of the movement range, the thigh muscle group of the user M repeats tension and relaxation, and mainly the thigh portion. The muscle group can be exercised.

  By the way, the user M generally places the buttocks on the seat portion 21 and the feet on the footrest 40, and the distance between both feet on the toe side is on the heel side as shown in FIG. Since it is natural to take a posture that is larger than the distance between the two feet, the pair of footrests 40 is not disposed in parallel, but the distance between the center lines connecting the front end and the rear end of the footrest surface 40a. Is arranged so as to be larger at the front end side. That is, if the user M puts his / her feet along the center line of the footrest surface 40a, the user M can take the natural posture described above, and the user M's legs at this time Is substantially the same as the opening angle between the center lines of the footrest surface 40a.

  Further, in this embodiment, the driving device 50 is placed on the center line of the footrest surface 40a so that the shear stress does not act on the knee joint of the user M when the seat portion 21 is moved by the driving device 50. The sheet portion 21 is moved along the direction. That is, when moving the seat part 21 forward from the rear end position, a period of moving diagonally right forward and a period of moving diagonally left forward are provided, and when moving the diagonally right front, The weight is applied to the thigh, and when moving diagonally left forward, the weight is applied to the thigh of the left leg.

  In addition, when the seat part 21 is moved, the contact surface 21a is formed so as to be inclined downward in the forward direction in the moving direction of the seat part 21 so that the own weight acting on the leg part of the user M is easily changed. It is desirable. That is, at the front end portion of the contact surface 21a, a portion that contacts the right side of the buttocks of the user M is given a downward slope diagonally forward right, and a portion that contacts the left side of the buttocks of the user M has a downward slope forward left. It is desirable to give. Thereby, when the seat part 21 moves forward, the weight which acts on the leg part of the user M becomes easy to increase, and the exercise effect can be enhanced.

  The structure of the seat support 20 will be described in detail. As shown in FIG. 2, a cylindrical column 22 is erected on the base 10, and the above-described lifting device 60 is accommodated in the column 22. The The lifting device 60 has a lifting base 61 that moves up and down relatively with respect to the support column 22, and is configured to mount the above-described driving device 50 on the upper end portion of the lifting base 61.

  The elevating base 61 includes a pedestal 61a on which the driving device 50 is mounted, a pair of guide plates 61b protruding downward from the lower surface of the pedestal 61a, and a roller 61c provided on the outer surface of the guide plate. The roller 61c is moved up and down along the central axis of the column 22 by rolling the roller 61c in the rail 22a provided inside the column 22 while the plate 61b is inserted into the column 22. The lift base 61 is driven up and down by a lift drive unit 62 including a drive motor 63. The elevating drive unit 62 includes a fixed member 64 fixed to the base 10 and a movable member 65 that moves up and down along the central axis of the support column 22 with respect to the fixed member 64 by the driving force of the drive motor 63. A lifting base 61 is attached to the upper end portion of 65. The pedestal 61a is attached with a cylindrical elevating cover 66 that overlaps the outer surface of the support column 22 within the range in which the elevating drive unit 62 expands and contracts, so that the drive device 60 is not exposed to the outside. A gap between the pedestal 61a and the seat portion 21 is covered with a cloth mechanism portion cover 67.

  Thus, the contact surface 21a of the seat portion 21 can be raised and lowered to a height that matches the physique of the user M by the operation of the lifting device 60. Here, the lifting device 60 is automatically set by inputting parameters such as the height of the user M using the operation unit 33 described later so that the bending angle θ of the knee of the user M is within the specified range. Assume that the height of the seat portion 21 is set. In addition, the center line of the support | pillar part 22 which determines the raising / lowering direction of the seat part 21 inclines back with respect to the up-down direction, and, thereby, the seat part 21 will be located back, so that it is located upwards.

  Next, the structure of the driving device 50 will be described with reference to FIGS. The drive device 50 constitutes a mechanism for swinging the seat portion 21 together with the pedestal 61a of the elevating device 60, and is inserted into a pair of front and rear shaft support plates 51a and 51b erected on the upper surface of the pedestal 61a. The shaft portions 52a and 52b are supported so as to be swingable in the left-right direction indicated by an arrow N in FIG.

  Further, the driving device 50 includes a pair of front and rear frame plates 53a and 53b, and a pair of left and right frame side plates 54a and 54b that connect both the frame plates 53a and 53b to form a rectangular frame as a whole. Yes. Here, with respect to both the frame side plates 54a and 54b, lower end portions of the front link 55 and the rear link 56 that can be rotated around the axis in the left-right direction are pivotally attached by the shaft portions 55a and 56a, respectively.

  The upper end portion of the front link 55 is pivotally attached to the base plate 57 by the shaft portion 55b, and the upper end portion of the rear link 56 is pivotally attached to the bearing plate 57a fixed to the base plate 57 by the shaft portion 56b. As a result, the movement range of the base plate 57 is regulated so that the front end portion moves in an arc shape centered on the shaft portion 55a and the rear end portion moves in an arc shape centered on the shaft portion 56a. . The seat portion 21 is attached to the base plate 57. Further, the rear link 56 is formed to be longer than the front link 55 so that the rotation radii are different between the front end portion and the rear end portion of the base plate 57, and as a result, the base plate 57 is moved forward and backward. The inclination angle of the upper surface changes. That is, when the base plate 57 moves forward in the front-rear direction of the seat portion 21 (the direction indicated by the arrow X in FIG. 2), the front end portion of the base plate 57 descends relative to the rear end portion and the upper surface is inclined. The angle increases. Therefore, the seat portion 21 can swing with movement in the front-rear direction.

  A motor 71 serving as a drive source for swinging the base plate 57 with respect to the base 61a is held by both frame side plates 54a and 54b in a vertically placed state in which the output shaft protrudes upward. A worm 72 is coupled to the output shaft of the motor 71. A first shaft 73 and a second shaft 74 are supported on the frame side plates 54a and 54b. A worm wheel 75 that meshes with the worm 72 and a gear that meshes with a gear 77 provided on the second shaft 74. 76 is provided. Eccentric cranks 78 that rotate together with the first shaft 73 are respectively attached to both ends of the first shaft 73, and one end of an arm link 79 is pivotally attached to each eccentric crank 78. The other end portion of each arm link 79 is pivotally attached to a shaft pin 55 c protruding from the left and right of the front link 55.

  As a result, when the motor 71 is rotated, the first shaft 73 is rotated via the worm 72 and the worm wheel 75, and the eccentric crank 78 is rotated accordingly, and the front link 55 is moved around the shaft portion 55a by the arm link 79. It reciprocates in the front-rear direction, and the front end portion of the base plate 57 swings in the front-rear direction (the direction of the arrow X in FIG. 2) around the shaft portion 55a. At this time, since the rear link 56 rotates around the shaft portion 56a, the inclination angle of the upper surface of the base plate 57 changes.

  On the other hand, an eccentric pin 74a is erected on one end portion of the second shaft 74, and the upper end portion of the eccentric rod 80 is axially attached to the eccentric pin 74a. The lower end portion of the eccentric rod 80 is rotatably connected to a connection fitting 81 fixed to the pedestal 61a. Accordingly, when the motor 71 is rotated, the height of the eccentric pin 74a with respect to the pedestal 61a is displaced by the rotation of the second shaft 74 via the first shaft 73. Therefore, the base plate 57 is connected to the shaft portion 52a, It swings left and right (in the direction of arrow N in FIG. 2) around 52b. Since the motor 71 is housed together with the gears 75 to 77 in a space surrounded by the frame plates 53a and 53b, the frame side plates 54a and 54b, the pedestal 61a, and the base plate 57, the driving device 50 becomes relatively compact. ing.

  The drive unit 50 having the above configuration basically moves the seat portion 21 to the lower right front and lower front left. Here, by appropriately setting the gear ratio of the gears 76 and 77 and the phase difference between the eccentric crank 78 and the eccentric pin 74a, the movement locus of the seat portion 21 is V-shaped (back and forth during one reciprocating movement left and right). 2 reciprocating movements).

  Further, as shown in FIG. 5, the passive exercise device includes an operation unit 33 that can operate the motor 71 for operation / stop and rotation speed, and a control unit 32 that controls the motor 71 according to an operation input of the operation unit 33. An exercise time, exercise intensity, and the like can be specified by operating the operation unit 33.

  By the way, as shown in FIG. 5, the passive exercise apparatus of the present embodiment includes a seat position detection unit 50 a that detects that the seat unit 21 has moved to the front end position of the movement range, and a foot of the user M in the footrest 40. The depression state detection unit 40c for detecting the presence or absence of depression by the step S4 and the movement of the seat portion 21 to the front end position detected by the seat position detection unit 50a until the depression is detected by the depression state detection unit 40c. A calculation unit 30 that calculates the required time, and a determination unit 31 that determines whether or not the bending angle θ of the knee of the user M is maintained within a specified range based on the required time calculated by the calculation unit 30. ing.

  The sheet position detection unit 50a includes at least a position sensor that can detect that the sheet unit 21 has moved to the foremost front end position in the movement range, and when detecting that the sheet unit 21 has moved to the front end position, FIG. A position detection signal is output as shown in FIG. Here, as shown in FIG. 1, one housed in the driving device 50 is employed, but the position of the sheet portion 21 instead of the driving device 50 may be directly detected. Further, the sheet position detection unit 50a may detect movement of the sheet unit 21 to the front end position using not only the position sensor but also a micro switch or the like. 3 and 4, the sheet position detection unit 50a is not shown.

  As shown in FIG. 1, the stepped-on state detection unit 40 c includes a load sensor that is disposed below the footrest 40 together with the elastic spring 40 b. The footrest 40 is elastically supported on the base 10 by a pair of elastic springs 40b provided on the toe side and the heel side, and resists the spring force of the elastic spring 40b when it is stepped on by the foot of the user M. Then, when the stepping is released, the height position of the footrest surface 40a from the floor surface is made variable by returning upward by the spring force of the elastic spring 40b. The stepped-on state detection unit 40c is disposed at a portion between the pair of elastic springs 40b that hold the footrests 40, and the footrests 40a resist the spring force of the elastic springs 40b. When the height position is lowered by a threshold value or more, a depression detection signal is output as shown in FIG. Note that the depression state detection unit 40c is not limited to a load sensor and may detect depression by using a micro switch or the like.

  Here, when the seat portion 21 is moved by the driving device 50 and the seat portion 21 is moved to the front end position, the weight of the user M acting on the leg portion of the user M is increased, whereby the foot of the user M with respect to the footrest 40 is increased. Stepping on occurs. Here, the length of time required from when the seat portion 21 moves to the front end position until the stepping occurs is determined by the bending angle θ of the knee of the user M and the seat with respect to the footrest 40 adjusted by the lifting device 60. It is determined by the height position of the contact surface 21 a of the part 21 and the moving range of the sheet part 21 by the driving device 50. In the present embodiment, when the bending angle θ of the knee of the user M is maintained within a specified range, the contact surface 21a of the seat portion 21 is configured such that the required time is a length within a predetermined reaction time. The height position and the movement range of the seat portion 21 are set.

  Accordingly, in the determination unit 31, as shown in FIG. 6 (c), after the movement of the seat unit 21 to the front end position is detected by the seat position detection unit 50a and the position detection signal is output, the depression state detection unit 40c. If the time required until the depression is detected and the depression detection signal is output is equal to or shorter than the reaction time Tth, it is determined that the knee bending angle θ of the user M is maintained within the specified range. If the required time exceeds the reaction time Tth, it can be determined that the bending angle θ of the knee of the user M is not maintained within the specified range. Here, when it is determined that the bending angle θ of the knee of the user M is not maintained within the specified range, the determination unit 31 of the present embodiment outputs a warning signal as illustrated in FIG. Adopt the configuration.

  In short, when the user M is performing a correct motion while maintaining the knee bending angle θ within a specified range, the weight of the weight acting on the leg of the user M is reduced by the seat portion 21 moving to the front end position. Therefore, stepping on by the foot of the user M is detected in the footrest 40 within the reaction time Tth from the time when the seat portion 21 moves to the front end position, and thereby the determination unit 31 bends the knee of the user M. It is determined that the angle θ is maintained within the specified range. On the other hand, for example, the height position of the seat portion 21 does not conform to the physique of the user M, or the leg strength of the user M who steps on the footrest 40 is insufficient. If the user cannot perform correct exercise while maintaining the value within the specified range, the foot of the footrest 40 is delayed by the foot of the user M, so that the foot within the reaction time Tth from the time when the seat portion 21 moves to the front end position. The step 40 by the foot of the user M is not detected in the table 40. Therefore, the determination unit 31 determines that the knee bending angle θ of the user M is not maintained within the specified range.

  Here, the judgment unit 31 determines that the knee bending angle θ of the user M is within a specified range only when the time required from the output of the position detection signal to the output of the depression detection signal exceeds the reaction time Tth. In addition to the case where the required time exceeds the reaction time Tth, the case where the depression detection signal is not output even when the reaction time Tth is exceeded is also determined. It may be determined that the bending angle θ is not maintained within the specified range. In the former configuration, a warning signal is output when the depression detection signal is output after the reaction time Tth has elapsed, and in the latter configuration, the warning signal is output when the reaction time Tth has elapsed without outputting the depression detection signal. The determination unit 31 is caused to function so as to output.

  The determination unit 31 outputs the above-described warning signal to the control unit 32. When the number of times of receiving the warning signal from the determination unit 31 reaches the specified number, the control unit 32 gradually decreases the moving speed of the seat unit 21 by decreasing the rotation speed of the motor 71 with time. The operation of the seat portion 21 is stopped by performing so-called slow stop control for controlling the driving device 50 so that the motor 71 and the seat portion 21 are finally stopped. Here, the control unit 32 resets the number of times the warning signal is received, for example, every minute, so that the seat unit 21 is stopped when the warning signal is received exceeding the specified number of times per minute. The number of times the warning signal is received is reset every time the operation of the sheet unit 21 is stopped, so that the sheet unit 21 is moved when the cumulative number of times the warning signal is received after the sheet unit 21 starts moving exceeds a specified number. You may make it stop.

  According to the configuration described above, the determination unit 31 can determine whether or not the bending angle θ of the knee of the user M is maintained within the specified range, and the bending angle θ of the knee of the user M is When the number of times determined not to be maintained within the specified range reaches the specified number of times, the seat portion 21 slows down, and thus continues for the user M who can maintain the knee bending angle θ within the specified range. On the other hand, for the user M who has not been able to maintain the knee bending angle θ within the specified range, the user M is encouraged to perform a correct exercise with the knee bending angle θ maintained within the specified range. It is possible to produce a desirable exercise effect using a passive exercise device.

  In addition, when the user M is not able to maintain the knee bending angle θ within the specified range, the control unit 32 stops the seat portion 21, thereby placing an unreasonable burden on the user M having knee pain, for example. It can be prevented from continuing. Furthermore, since the control part 32 performs slow stop control of the seat part 21, it can avoid that the user M falls out of the seat part 21 when the seat part 21 stops. Further, since the seat portion 21 does not stop until the number of times when it is determined that the knee bending angle θ of the user M is not maintained within the specified range reaches the specified number, the knee bending angle θ is within the specified range. For example, when the user M who has been able to exercise properly while maintaining the position has been depressed once, the user M can continue to exercise without stopping the seat portion 21.

  Here, when performing exercise using the passive exercise apparatus of the present embodiment, the knee bending angle (actually measured is the angle formed by the thigh and crus on the front side of the knee) θ should be 140 degrees. For example, an experimental result has been obtained that the exercise effect is high and knee pain is unlikely to occur, and the above-mentioned specified range is set to a range centering around 140 degrees, for example. The reaction time Tth is set to 0.1 seconds, for example, and the specified number of times is set to 10 times, for example.

  By the way, in the said embodiment, when the judgment part 31 judges that the judgment result of the judgment part 31 is output to the control part 32, and the bending angle (theta) of the knee of the user M is not maintained in a regulation range, it is a sheet | seat. Although the example of slow-stopping the operation of the unit 21 has been shown, the present invention is not limited to this example, and the determination result of the determination unit 31 as to whether or not the bending angle of the knee of the user M is maintained within the specified range, For example, a configuration may be provided in which means (notification means) for notifying the user M by displaying on a display unit or notifying with sound (or sound) from a speaker (sound output unit) is provided.

  It should be noted that a handle post provided with an upper end portion of a handle that the user M grips with his / her hand as needed may be erected on the base 10 and the operation portion 33 may be attached to the handle post. . However, in this case, even when the user M is gripping the handle, if the bending angle θ of the knee of the user M is maintained within the specified range, from the time when the seat portion 21 moves to the front end position. It is necessary to limit the weight of the user M on the handle by the position of the handle or the like so that the foot of the user M is stepped on the footrest 40 within a predetermined reaction time.

1 shows an embodiment of the present invention, in which (a) is a schematic side view and (b) is a schematic plan view. It is an exploded perspective view same as the above. It is a disassembled perspective view of a drive device same as the above. It is a side view of a drive device same as the above. It is a block diagram which shows schematic structure same as the above. It is explanatory drawing of operation | movement same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 21 Seat part 31 Judgment part 32 Control part 40 Footing stand 40c Depression state detection part 50 Drive apparatus 50a Seat position detection part M User Tth Reaction time (theta) Bending angle

Claims (3)

  A seat part that can be swung with movement in the front-rear direction and supports the user's buttocks, and the user puts the foot in a state where the buttocks rest on the seat part. A footrest that moves downward upon receiving the stepping foot and returns to the upper side when the stepping is released, and a step of the foot of the user with respect to the footresting base occurs by moving the seat part to the front end position of the moving range. As described above, the drive unit that moves the seat part to change its own weight acting on the leg part of the user, the seat position detection part that detects that the seat part has moved to the front end position of the moving range, and the footrest A depressing state detection unit that detects the presence or absence of depression by a person's foot, and a predetermined time from when the seat position detection unit detects the movement of the seat to the front end position until the depressing state detection unit detects depression The opposite of If the time is less than the time, it is determined that the bending angle of the user's knee is maintained within the specified range, and if the required time exceeds the reaction time, the bending angle of the user's knee is within the specified range. A passive exercise apparatus comprising: a determination unit that determines that it is not maintained.   When the number of times that the bending angle of the user's knee is determined not to be maintained within the specified range in the determining unit reaches the specified number of times, the moving speed of the seat unit is decreased with the passage of time, and the sheet unit The passive exercise apparatus according to claim 1, further comprising a control unit that controls the drive device to stop the movement.   The other of Claim 1 or Claim 2 provided with the alerting | reporting means to alert | report a determination result of the said determination part to a user at least one of the display of a display part, and the sound output from an audio | voice output part. Dynamic exercise equipment.

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