Training device and training system

Abstract

The present invention provides a training device capable of effectively performing training along the actual motion of a physical exercise. A training device (1) is provided with: a cable (4) which is released in accordance with the movement of a user; a spool (5) around which the cable (4) is wound; a rotary encoder (8) that detects the rotation state of the spool (5); a magnetorheological fluid device (9) that applies a braking force to the spool (5); and a control means (10) that calculates the stroke amount of the cable (4) on the basis of the output value of the rotary encoder (8), and that can change the magnitude of the load during the operation by controlling the braking force on the basis of the stroke amount.

Description

Technical Field

[0001] The invention relates to a training device and a training system. Background Art

[0002] When performing muscle strengthening or rehabilitation training, training equipment that utilizes the weight of a weight is often used. Such training equipment for weight training is usually configured to use a specific muscle or body part as a target for muscle training, perform a prescribed action that applies a load to the target intensively, and is designed to be able to adjust the size of the load by the weight of the weight.

[0003] On the other hand, there is also known a training device that can adjust the size of the load without using weights. For example, the muscle training device disclosed in Patent Documents 1 and 2 is configured so that the trainee rotates a handle-shaped operating portion to apply electromagnetic rotational resistance in a manner that resists the operation. More specifically, in these prior arts, a rotating body that rotates in conjunction with the rotation operation of the handle performed by the trainee is arranged in an electrorheological fluid or a magnetorheological fluid, and the viscous resistance to rotation is controlled by controlling the size of the electricity or magnetism applied to the rheological fluid, thereby adjusting the load on the user.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2002-126122

[0007] Patent Document 2: Japanese Patent No. 4956808 Summary of the invention

[0008] Technical problem to be solved by the invention

[0009] However, in the above-mentioned training equipment, since the load is applied to the simple movement of the muscles or body parts of the training object, it is not necessarily a load application method suitable for the actual movement of sports, and it may not be possible to perform effective training. In addition, in the previous training equipment, due to the structure of the equipment, the movement form is limited, so it is impossible to perform training that makes the muscles of the whole body move together, especially not suitable for professional athletes to improve their performance.

[0010] The present invention has been made in view of such circumstances, and an object of the present invention is to provide a training device and a training system that can effectively perform training along actual movements of sports.

[0011] Technical solutions adopted to solve technical problems

[0012] <First aspect of the present invention>

[0013] A first embodiment of the present invention is a training device comprising: a cable that is released as the user moves; a measuring unit that measures the stroke of the cable; a magnetorheological fluid device that applies a braking force to the cable; and a control unit that calculates the stroke of the cable based on an output value of the measuring unit, the control unit controls the braking force based on the stroke, thereby being able to change the size of the load during the action.

[0014] The training device according to the first embodiment of the present invention calculates the amount of cable travel accompanying the training action, and changes the braking force for releasing the cable according to the amount of travel, thereby being able to change the magnitude of the load during the training action. At this time, the user's actions in three-dimensional space are not limited by the structure of the device, and the user is subjected to the training load in actual actions such as linking the muscles of the whole body, so that training along the actual actions of the sport can be effectively performed.

[0015] <Second Aspect of the Invention>

[0016] A second aspect of the present invention is a training device. In the first aspect of the present invention, the measuring unit includes a drum around which the cable is wound and a rotary encoder for detecting a rotation state of the drum, and the drum, the rotary encoder and the magnetorheological fluid device have a common rotation axis.

[0017] According to the training device involved in the second mode of the present invention, since the main rotating mechanism can be arranged close to each other on a straight line, in addition to making the entire device compact, it can also reduce the loss of torque transmission between structural components and improve the accuracy of stroke detection and braking force of the magnetorheological fluid device.

[0018] <Third Aspect of the Invention>

[0019] A third aspect of the present invention is a training device, in the first or second aspect of the present invention, comprising a cable angle detection unit for detecting a cable angle at which the cable is released, wherein the control unit controls the braking force based on the stroke amount and the cable angle.

[0020] The training device involved in the third mode of the present invention can not only detect the stroke of the cable, but also the cable angle of the cable extension. Therefore, it can more accurately identify the user's action state at each moment, and can change the size of the training load not only for the stroke but also for the cable angle.

[0021] <Fourth aspect of the present invention>

[0022] A fourth aspect of the present invention is a training system including a plurality of training devices according to the first or second aspect of the present invention separately arranged from one another, wherein the plurality of training devices cooperate to control the direction of the load.

[0023] According to the training system involved in the fourth mode of the present invention, since the training load can be generated by the composite vector of the loads applied to the cables of multiple training devices at each moment, not only the size of the training load can be changed during the training action, but also the direction of the training load can be changed, thereby enabling training that is more suitable for actual actions.

[0024] <Fifth Aspect of the Invention>

[0025] The fifth aspect of the present invention is a training system comprising: a training device according to the first or second aspect of the present invention; and a displacement device for displacing the position of the training device, wherein the control unit adjusts the position of the training device according to the physique of the user and the type of the action.

[0026] According to the training system of the fifth aspect of the present invention, by inputting the physique information of the user of the training device and information on the type of movement, the training device can be automatically moved and positioned according to the information before training, for example.

[0027] <Sixth Aspect of the Invention>

[0028] A sixth aspect of the present invention is a training system, which, in the fifth aspect of the present invention, comprises an imaging device for imaging the user, wherein the control unit measures the physique of the user based on information from the imaging device.

[0029] According to the training system according to the sixth aspect of the present invention, since the physical information of the user can be read by the imaging device, the training device can be automatically moved to an appropriate position based on the physical information.

[0030] <Seventh Aspect of the Invention>

[0031] A seventh aspect of the present invention is a training system, which, in the fifth aspect of the present invention, comprises a camera for photographing the user, wherein the control unit changes the position of the training device during the action based on information from the camera.

[0032] According to the training system involved in the seventh mode of the present invention, since it is possible to move the training device in accordance with the user's ever-changing movement pattern while reading the process of training movements with a camera device, it is possible to change the direction of the load in accordance with the trajectory of the movement, and to generate a training load that is more suitable for the actual movement.

[0033] Effects of the Invention

[0034] According to the present invention, it is possible to provide a training device and a training system that can effectively perform training along the actual movements of sports. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram showing a usage example of the training device according to the first embodiment.

[0036] Figure 2 is a schematic diagram showing the internal structure of the training device.

[0037] Figure 3 It is a waveform diagram showing a load curve corresponding to a series of actions.

[0038] Figure 4 It is a perspective view of the appearance of the training device according to the second embodiment.

[0039] Figure 5 It is a schematic diagram showing a usage example of the training system involved in the third embodiment.

[0040] Figure 6 It is a structural diagram of a training system involved in the fourth embodiment.

[0041] Figure 7 : is a schematic diagram showing another usage example of the training device.

[0042] Description of Reference Numerals

[0043] 1…training device; 2…housing; 3…opening; 4…cable; 5…reel; 6…rotating shaft; 7…coil spring; 8…rotary encoder; 9…magnetorheological fluid device; 10…control unit; B…bat; P…support. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. In addition, the present invention is not limited to the contents described below, and can be arbitrarily changed in the scope of the main purpose. In addition, the drawings used in the description of the embodiments are all drawings schematically showing structural components, and some parts are emphasized, enlarged, reduced or omitted in order to deepen the understanding, and sometimes the scale, shape, etc. of the structural components are not accurately shown.

[0045] <First Embodiment>

[0046] Figure 11 is a schematic diagram showing a use example of the training device 1 involved in the first embodiment. The training device 1 is a device that can generate a real load that matches the movements of various sports to perform training. In this embodiment, the training device 1 is described by using an example of use during baseball batting practice.

[0047] The training device 1 is configured in appearance to release a cable 4 from an opening 3 provided on the front of a housing 2, and the front end of the cable 4 is connected to a position near the core of a bat B. Furthermore, as described in detail later, the training device 1 applies resistance to the force of pulling the cable 4 according to the stroke of the cable 4 released in accordance with the hitting action of the user, thereby changing the training load during the swing of the bat B. In addition, the cable 4 may be connected to the wrist of the user.

[0048] Furthermore, the training device 1 is fixed to a predetermined position of the support P in this embodiment, but the fixing position may be changed in accordance with the action or the user, and may be fixed to a wall, ceiling or ground according to the usage.

[0049] Figure 2 2 is a schematic diagram showing the internal structure of the training device 1. The housing 2 mainly includes a reel 5, a rotating shaft 6, a spiral spring 7, a rotary encoder 8, a magnetorheological fluid device 9, and a control unit 10.

[0050] The drum 5 is a cylindrical member for winding the cable 4. The rotating shaft 6 is fixed to the axis of the drum 5. The coil spring 7 is composed of a strip of metal wound around the rotating shaft 6, with the inner end fixed to the rotating shaft 6 and the outer end fixed to the inner wall surface of the housing 2, for example, so as to apply force to make the drum 5 wind up the unwound cable 4.

[0051] The rotary encoder 8 is fixed to the housing 2 and detects the rotation state of the drum 5 via the rotating shaft 6. Here, the rotation state is, for example, time series information of the rotation angle, which is used to calculate the stroke amount or the release speed when the cable 4 is released. That is, in this embodiment, the drum 5 around which the cable 4 is wound and the rotary encoder 8 that detects the rotation state of the drum 5 constitute a "measuring unit" for measuring the stroke amount of the cable 4.

[0052] The magnetorheological fluid device 9 is a well-known MRF (Magneto-Rheological Fluid) device, which controls the magnitude of the applied magnetism to cause viscous resistance to act on the input rotational force. In this embodiment, the magnetorheological fluid device 9 applies a braking force to the rotation of the drum 5 via the rotating shaft 6, thereby applying a load to the release of the cable 4. The braking force is released when the force for releasing the cable 4 does not work, and the cable 4 is wound on the drum 5 by the applied force of the coil spring 7.

[0053] The control unit 10 is composed of, for example, a known microcomputer control circuit, and calculates the length of the cable 4 that has been unwound, that is, the stroke amount, based on the output value of the rotary encoder 8. In addition, the control unit 10 stores a load curve (see FIG. 1 ) showing the relationship between the stroke amount of the cable 4 and the braking force of the magnetorheological fluid device 9. Figure 3 ), the magnetorheological fluid device 9 generates a braking force that follows a load curve described later in response to the stroke amount that changes with the action.

[0054] Figure 3 is a waveform diagram showing a load curve corresponding to a series of actions. More specifically, Figure 3 The figure above shows the shape change of the hitting action illustrated in this embodiment, and shows how the stroke amount of the cable 4 changes corresponding to the shape change. Figure 3 The following figure is a load curve showing the change of the load W [kg] of the braking force generated by the magnetorheological fluid device 9 with respect to the stroke amount [mm] corresponding to each instantaneous state. In addition, here, as a reference, the target waveform and the measured waveform of the speed at which the cable 4 is released with respect to the stroke amount are also shown.

[0055] The load curve is set in advance in accordance with the action as a time change of the training load received by the user. In the case of a hitting action as in the present embodiment, the waveform is set so that the load is low at the beginning of the swing of the bat B and reaches the maximum load Wmax at the time of hitting as shown in (5) in the figure. More specifically, here, for example, a waveform is set so that the maximum load Wmax = 16 [kg] is reached at the time of the stroke amount = 150 [mm].

[0056] In addition, the load curve is measured and set in advance based on the theoretical value of each training action. According to parameters such as the assumed ball speed or ball type, the size or peak position of the maximum load Wmax at the hitting point can be adjusted as a waveform change of the load curve.

[0057] Here, the load curve can be stored in the control unit 10 as a plurality of waveforms with different characteristics, or can be appropriately received from the outside as load curve data. Then, the user can select and adjust the load curve so that the size of the training load changes with the course of his own movements, and can perform effective training that meets the purpose of, for example, increasing the swing speed immediately before hitting.

[0058] As described above, the training device 1 of this embodiment can change the magnitude of the training load during the movement by controlling the braking force of the magnetorheological fluid device 9 based on the stroke of the cable 4. Therefore, the training device 1 can effectively perform training along the actual movement of the sport.

[0059] In addition, the training device 1 arranges the reel 5, the rotary encoder 8 and the magnetorheological fluid device 9 in a straight line in a manner that they have a common rotation axis 6 inside the housing 2. Therefore, the training device 1 can not only make the device as a whole compact, but also reduce the loss of torque transmission between structural components, and improve the accuracy of stroke detection and the braking force of the magnetorheological fluid device 9.

[0060] <Second Embodiment>

[0061] Next, a second embodiment of the present invention will be described. The training device 11 involved in the second embodiment is different from the first embodiment in the release portion of the cable 4 in the training device 1 of the first embodiment. Below, the parts different from the first embodiment will be described, and the same reference numerals are given to the common structural elements with the first embodiment, and detailed descriptions are omitted.

[0062] Figure 4 The housing 2 and its internal structure of the training device 11 are substantially the same as those of the training device 1 of the first embodiment, and the housing 2 is provided with a cable angle detector 20 for detecting the cable angle θ at which the cable 4 is unwound.

[0063] More specifically, the cable angle detection unit 20 in the present embodiment is a mechanism for detecting the angle at which the cable 4 extends in the vertical direction, and includes a pair of support portions 21 , a rotating portion 22 , a protruding portion 23 , and an angle sensor 24 .

[0064] One end of a pair of support parts 21 is fixed to the front of the housing 2, and the other end extends in a manner that becomes a rotation axis in the horizontal direction relative to the rotating part 22. The rotating part 22 is formed with a through hole for inserting the cable 4 extending from the opening part 3 of the housing 2, and is rotatably connected to the pair of support parts 21. The protrusion 23 is not a necessary structure of the cable angle detection part 20, but is a component for making the rotation displacement of the rotating part 22 easily follow the extension direction of the cable 4. The angle sensor 24 can detect the rotation angle of the support part 21 and the rotating part 22, for example, using the same sensor as the above-mentioned rotary encoder 8.

[0065] Thus, when the extension direction of the cable 4 released from the opening 3 changes with the user's movement, the cable angle detection unit 20 can detect the cable angle θ (-90°<θ<90°) by detecting the rotation angle of the rotating unit 22 rotating in accordance with the extension direction through the angle sensor 24. The cable angle θ is always sent from the angle sensor 24 to the control unit 10 during the operation of the training device 11.

[0066] Thus, the control unit 10 can detect the cable angle θ in the vertical direction in addition to the stroke amount of the cable 4. Therefore, the control unit 10 can more accurately identify the state of the user's action at each moment, and can control the braking force of the magnetorheological fluid device 9 according to the stroke amount and the cable angle θ to change the magnitude of the training load.

[0067] In addition, the structure of the cable angle detection unit 20 is only an example, and other structures having the same function may be adopted. In addition, in the present embodiment, the cable angle θ in the vertical direction is detected by the cable angle detection unit 20, but the cable angle φ in the horizontal direction may also be detected by combining the same structure. In this case, the training device 11 obtains the cable angle θ and the cable angle φ in addition to the stroke amount, thereby determining the position of the front end of the cable 4 in the three-dimensional space, and thus being able to perform more detailed training load control in accordance with the trajectory of the action.

[0068] <Third Embodiment>

[0069] Next, the third embodiment of the present invention is described. The training system 12 involved in the third embodiment is different from the first embodiment in that a plurality of the training devices 1 of the first embodiment are used in conjunction with each other. Below, the parts different from the first embodiment are described, and the same reference numerals are given to the structural elements common to the first embodiment, and detailed descriptions are omitted.

[0070] Figure 5 1 is a schematic diagram showing a use example of the training system 12 according to the third embodiment. The training system 12 includes a first training device 2a and a second training device 12b, both of which are formed by the training device 1 of the first embodiment and are arranged separately from each other. In addition, the tip of the cable 4 of each of the first training device 12a and the second training device 12b is connected to a position near the core of the bat B in this embodiment.

[0071] However, the force required for the hitting action changes moment by moment as shown by the dotted arrow on the swing trajectory of the bat B. Therefore, the training load more suitable for the actual action also changes direction along the swing trajectory.

[0072] Therefore, in the training system 12 of this embodiment, the load curves of the first training device 12a and the second training device 12b are set to different waveforms as shown in Wa and Wb, respectively, and the two cooperate to change the direction of the training load. More specifically, Wa and Wb are set in such a way that the composite vector of the load applied to the cables 4 of the first training device 12a and the second training device 12b at each moment becomes the training load. In addition, the trajectory of the action is calculated based on the difference in the stroke amount of the first training device 12a and the second training device 12b.

[0073] Thus, according to the training system 12 involved in the third embodiment, the magnitude of the load relative to the stroke of the cable 4 is linked between the first training device 12a and the second training device 12b by matching the trajectory of the action, thereby generating a training load more suitable for the actual action.

[0074] In addition, in the first training device 12a and the second training device 12b, the training action or the configuration of the track is appropriately set. In addition, the first training device 12a and the second training device 12b can also connect the front end of the cable 4 to different positions of the bat B to generate a complex training load.

[0075] <Fourth Embodiment>

[0076] Next, the fourth embodiment of the present invention is described. The training system 13 involved in the fourth embodiment is different from the first embodiment in that the training device 1 of the first embodiment is provided with a moving mechanism, etc. Below, the parts different from the first embodiment are described, and the same reference numerals are marked on the structural elements common to the first embodiment and the detailed description is omitted.

[0077] Figure 6 1 is a structural diagram of a training system 13 according to a fourth embodiment. The training system 13 includes a displacement device 30 capable of moving the training device 1 according to the first embodiment in the horizontal direction and the vertical direction. More specifically, the displacement device 30 includes a pair of vertical rods 31, a horizontal rod 32, a pair of vertical moving parts 33, and a horizontal moving part 34.

[0078] The pair of vertical rods 31 are, for example, fixed to the ground and are two rod-shaped members that are separated from each other in the horizontal direction. The horizontal rod 32 is a rod-shaped member that extends in the horizontal direction and is mounted on the pair of vertical rods 31. A pair of vertical moving parts 33 are respectively fixed to both ends of the horizontal rod 32, and a so-called rack-and-pinion mechanism is formed between the pair of vertical rods 31 and the pair of vertical rods 31 by a built-in motor (not shown), so that the horizontal rod 32 is raised and lowered along the pair of vertical rods 31. The horizontal moving part 34 is fixed to the housing 2 of the training device 1, and a so-called rack-and-pinion mechanism is formed between the pair of vertical rods 31 and the horizontal rod 32 by a built-in motor (not shown), so that the training device 1 is moved in the horizontal direction.

[0079] Here, the built-in motors respectively built into the pair of vertical moving parts 33 and the horizontal moving part 34 are controlled by the control unit 10 of the training device 1. Therefore, the control unit 10 can freely move the training device 1 in the horizontal direction and the vertical direction.

[0080] Furthermore, the control unit 10 can adjust the position of the training device 1 according to, for example, the physique of the user and the type of action by controlling the displacement device 30 as described above. More specifically, the control unit 10 can move and position the training device 1 in accordance with the information before training by inputting the user's physique information such as height or weight and information related to the type of action such as batting or pitching through a wired or wireless communication unit (not shown) or an input device provided separately.

[0081] In addition, in the training system 13 of the present embodiment, as a camera for photographing the user, the camera C may be installed on, for example, the plumb rod 31. Thus, the control unit 10 may read the user's physical information photographed by the camera C and automatically move the training device 1 to a position that matches the user's physical condition.

[0082] Furthermore, in the training system 13 of this embodiment, the control unit 10 can also move the training device 1 in accordance with the user's changing posture while reading the training action process with the camera C. Figure 5 ) by changing the direction of the load in accordance with the trajectory of the movement, it is possible to generate a training load that is more suitable for the actual movement.

[0083] In addition, the displacement device 30 is not limited to the structure of this embodiment, and various changes can be made, for example, the horizontal rod 32 can also be formed into a curved shape instead of a straight shape. In addition, the displacement device 30 can also be configured to be able to displace only in one direction of the horizontal direction and the vertical direction according to the specifications.

[0084] The above is the end of the description of the embodiments, but the present invention is not limited to the above embodiments. For example, in the above embodiments, the method used in the batting action of baseball is illustrated, but by appropriately setting the installation position and load curve of the training device, it is also possible to perform the training on the pitching of baseball, the swing of tennis or golf, the paddling operation of rowing, Figure 7 The invention can be used for different events or actions such as hitting a volleyball as shown. For example, in the case of rowing paddle operation, a cable 4 is connected from the part of the paddle that the user holds to the front end of the fulcrum to impart resistance to the operation of rowing. In addition, it can also be applied to a training device for rehabilitation training.

[0085] In addition, in each of the above-mentioned embodiments, as a measuring unit for measuring the stroke amount of the cable 4, a method using the reel 5 and the rotary encoder 8 is exemplified, but other methods may be used as long as the stroke amount of the cable 4 following the user's action can be calculated. For example, a wireless communication mother unit may be provided on the housing 2 of the training device 1, and a wireless communication child unit may be provided on the front end side of the cable 4, so as to calculate the stroke amount of the cable 4 by using the change in the radio wave intensity or signal propagation time between the mother unit and the child unit.

[0086] In addition, in the housing 2 of the training device 1, a camera may be used instead of the rotary encoder 8 to detect the rotation state of the reel 5. In this case, for example, a disk with circular marks at equal intervals is provided on the rotating shaft 6 of the reel 5, and the stroke of the cable 4 can be detected by the interval of the reading time of the marks captured by the camera and the rotation speed.

Claims

1. A training device comprising: Cables, which are released in response to the user's movements; a measuring unit for measuring a stroke amount of the cable; a magnetorheological fluid device that imparts a braking force to the cable; as well as a control unit that calculates a stroke amount of the cable based on an output value of the measuring unit, The control unit controls the braking force based on the stroke amount, thereby being able to change the magnitude of the load during the operation.

2. The training device according to claim 1, wherein: The measuring unit includes: a drum that winds the cable; and a rotary encoder that detects a rotation state of the drum. The drum, the rotary encoder and the magnetorheological fluid device have a common rotation axis.

3. The training device according to claim 1 or 2, wherein: The training device includes a cable angle detection unit, the cable angle detection unit detecting a cable angle at which the cable is released. The control unit controls the braking force according to the stroke amount and the cable angle.

4. A training system, A plurality of training devices according to claim 1 or 2 are configured separately from each other, A plurality of the training devices cooperate to control the direction of the load.

5. A training system comprising: The training device according to claim 1 or 2; and a displacement device that displaces the position of the training device, The control unit adjusts the position of the training device according to the physique of the user and the type of the movement.

6. The training system according to claim 5, wherein: The training system includes a camera for photographing the user. The control unit measures the physique of the user based on information from the imaging device.

7. The training system according to claim 5, wherein: The training system includes a camera for photographing the user. The control unit changes the position of the training device during the exercise based on the information from the imaging device.

Images